Always add render engine to Blender args

* Use pubsub messages instead of a background thread to process changes to the RenderQueue

* Misc logging improvements

.github/workflows/pylint.yml

@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.8", "3.9", "3.10"]
+        python-version: ["3.10", "3.11", "3.12"]
     steps:
     - uses: actions/checkout@v3
     - name: Set up Python ${{ matrix.python-version }}

.gitignore

@@ -1,8 +1,8 @@
-/job_history.json
 *.icloud
 *.fcpxml
 /uploads
 *.pyc
-/server_state.json
-/.scheduler_prefs
 *.db
+/dist/
+/build/
+/.github/

.pylintrc

@@ -0,0 +1,4 @@
+[MASTER]
+max-line-length = 120
+[MESSAGES CONTROL]
+disable = missing-docstring, invalid-name, import-error, logging-fstring-interpolation

LICENSE.txt

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2024 Brett Williams
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

@@ -1,19 +1,10 @@
-# 🎬 Zordon - Render Management Tools 🎬
+# 🎬 Zordon - Render Management Tools
 
-Welcome to Zordon! This is a hobby project written with fellow filmmakers in mind. It's a local network render farm manager, aiming to streamline and simplify the rendering process across multiple home computers.
+Welcome to Zordon! It's a local network render farm manager, aiming to streamline and simplify the rendering process across multiple home computers.
 
 ## 📦 Installation
 
-Make sure to install the necessary dependencies: `pip3 install -r requirements.txt`
-
-## 🚀 How to Use
-
-Zordon has two main files: `start_server.py` and `start_client.py`.
-
-- **start_server.py**: Run this on any computer you want to render jobs. It manages the incoming job queue and kicks off the appropriate render jobs when ready.
-- **start_client.py**: Run this to administer your render servers. It lets you manage and submit jobs.
-
-When the server is running, the job queue can be accessed via a web browser on the server's hostname (default port is 8080). You can also access it via the GUI client or a simple view-only dashboard.
+Install the necessary dependencies: `pip3 install -r requirements.txt`
 
 ## 🎨 Supported Renderers
 

config/config.yaml

@@ -3,7 +3,7 @@ update_engines_on_launch: true
 max_content_path: 100000000
 server_log_level: info
 log_buffer_length: 250
-subjob_connection_timeout: 120
+worker_process_timeout: 120
 flask_log_level: error
 flask_debug_enable: false
 queue_eval_seconds: 1

main.py

@@ -1,4 +1,5 @@
 #!/usr/bin/env python3
+
 from src import init
 
 if __name__ == '__main__':

requirements.txt

@@ -1,15 +1,37 @@
-requests==2.31.0
-psutil==5.9.6
-PyYAML==6.0.1
-Flask==3.0.0
-rich==13.6.0
-Werkzeug~=3.0.1
-json2html~=1.3.0
-SQLAlchemy~=2.0.15
-Pillow==10.1.0
-zeroconf==0.119.0
-Pypubsub~=4.0.3
-tqdm==4.66.1
-plyer==2.1.0
-PyQt6~=6.6.0
-PySide6~=6.6.0
+PyQt6>=6.6.1
+psutil>=5.9.8
+requests>=2.31.0
+Pillow>=10.2.0
+PyYAML>=6.0.1
+flask>=3.0.2
+tqdm>=4.66.2
+werkzeug>=3.0.1
+Pypubsub>=4.0.3
+zeroconf>=0.131.0
+SQLAlchemy>=2.0.25
+plyer>=2.1.0
+pytz>=2023.3.post1
+future>=0.18.3
+rich>=13.7.0
+pytest>=8.0.0
+numpy>=1.26.3
+setuptools>=69.0.3
+pandas>=2.2.0
+matplotlib>=3.8.2
+MarkupSafe>=2.1.4
+dmglib>=0.9.5; sys_platform == 'darwin'
+python-dateutil>=2.8.2
+certifi>=2023.11.17
+shiboken6>=6.6.1
+Pygments>=2.17.2
+cycler>=0.12.1
+contourpy>=1.2.0
+packaging>=23.2
+fonttools>=4.47.2
+Jinja2>=3.1.3
+pyparsing>=3.1.1
+kiwisolver>=1.4.5
+attrs>=23.2.0
+lxml>=5.1.0
+click>=8.1.7
+requests_toolbelt>=1.0.0

server.py

@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-from src.api.api_server import start_server
+from init import run
 
 if __name__ == '__main__':
-    start_server()
+    run(server_only=True)

setup.py

@@ -0,0 +1,22 @@
+"""
+This is a setup.py script generated by py2applet
+
+Usage:
+    python setup.py py2app
+"""
+import glob
+
+from setuptools import setup
+
+APP = ['main.py']
+DATA_FILES = [('config', glob.glob('config/*.*')),
+              ('resources', glob.glob('resources/*.*'))]
+OPTIONS = {}
+
+setup(
+    app=APP,
+    data_files=DATA_FILES,
+    options={'py2app': OPTIONS},
+    setup_requires=['py2app'],
+    name='Zordon'
+)

src/api/add_job_helpers.py

@@ -10,14 +10,28 @@ import requests
 from tqdm import tqdm
 from werkzeug.utils import secure_filename
 
-from src.distributed_job_manager import DistributedJobManager
-from src.engines.engine_manager import EngineManager
-from src.render_queue import RenderQueue
-
 logger = logging.getLogger()
 
 
 def handle_uploaded_project_files(request, jobs_list, upload_directory):
+    """
+    Handles the uploaded project files.
+
+    This method takes a request with a file, a list of jobs, and an upload directory. It checks if the file was uploaded
+    directly, if it needs to be downloaded from a URL, or if it's already present on the local file system. It then
+    moves the file to the appropriate directory and returns the local path to the file and its name.
+
+    Args:
+        request (Request): The request object containing the file.
+        jobs_list (list): A list of jobs. The first job in the list is used to get the file's URL and local path.
+        upload_directory (str): The directory where the file should be uploaded.
+
+    Raises:
+        ValueError: If no valid project paths are found.
+
+    Returns:
+        tuple: A tuple containing the local path to the loaded project file and its name.
+    """
     # Initialize default values
     loaded_project_local_path = None
 
@@ -35,12 +49,11 @@ def handle_uploaded_project_files(request, jobs_list, upload_directory):
             raise ValueError(f"Error downloading file from URL: {project_url}")
     elif local_path and os.path.exists(local_path):
         referred_name = os.path.basename(local_path)
-
     else:
         raise ValueError("Cannot find any valid project paths")
 
     # Prepare the local filepath
-    cleaned_path_name = os.path.splitext(referred_name)[0].replace(' ', '_')
+    cleaned_path_name = jobs_list[0].get('name', os.path.splitext(referred_name)[0]).replace(' ', '-')
     job_dir = os.path.join(upload_directory, '-'.join(
         [datetime.now().strftime("%Y.%m.%d_%H.%M.%S"), renderer, cleaned_path_name]))
     os.makedirs(job_dir, exist_ok=True)
@@ -68,7 +81,6 @@ def download_project_from_url(project_url):
     # This nested function is to handle downloading from a URL
     logger.info(f"Downloading project from url: {project_url}")
     referred_name = os.path.basename(project_url)
-    downloaded_file_url = None
 
     try:
         response = requests.get(project_url, stream=True)
@@ -95,7 +107,21 @@ def download_project_from_url(project_url):
 
 
 def process_zipped_project(zip_path):
-    # Given a zip path, extract its content, and return the main project file path
+    """
+    Processes a zipped project.
+
+    This method takes a path to a zip file, extracts its contents, and returns the path to the extracted project file.
+    If the zip file contains more than one project file or none, an error is raised.
+
+    Args:
+        zip_path (str): The path to the zip file.
+
+    Raises:
+        ValueError: If there's more than 1 project file or none in the zip file.
+
+    Returns:
+        str: The path to the main project file.
+    """
     work_path = os.path.dirname(zip_path)
 
     try:
@@ -122,58 +148,3 @@ def process_zipped_project(zip_path):
         logger.error(f"Error processing zip file: {e}")
         raise ValueError(f"Error processing zip file: {e}")
     return extracted_project_path
-
-
-def create_render_jobs(jobs_list, loaded_project_local_path, job_dir):
-    results = []
-
-    for job_data in jobs_list:
-        try:
-            # get new output path in output_dir
-            output_path = job_data.get('output_path')
-            if not output_path:
-                loaded_project_filename = os.path.basename(loaded_project_local_path)
-                output_filename = os.path.splitext(loaded_project_filename)[0]
-            else:
-                output_filename = os.path.basename(output_path)
-
-            # Prepare output path
-            output_dir = os.path.join(os.path.dirname(os.path.dirname(loaded_project_local_path)), 'output')
-            output_path = os.path.join(output_dir, output_filename)
-            os.makedirs(output_dir, exist_ok=True)
-            logger.debug(f"New job output path: {output_path}")
-
-            # create & configure jobs
-            worker = EngineManager.create_worker(renderer=job_data['renderer'],
-                                                 input_path=loaded_project_local_path,
-                                                 output_path=output_path,
-                                                 engine_version=job_data.get('engine_version'),
-                                                 args=job_data.get('args', {}))
-            worker.status = job_data.get("initial_status", worker.status)
-            worker.parent = job_data.get("parent", worker.parent)
-            worker.name = job_data.get("name", worker.name)
-            worker.priority = int(job_data.get('priority', worker.priority))
-            worker.start_frame = int(job_data.get("start_frame", worker.start_frame))
-            worker.end_frame = int(job_data.get("end_frame", worker.end_frame))
-
-            # determine if we can / should split the job
-            if job_data.get("enable_split_jobs", False) and (worker.total_frames > 1) and not worker.parent:
-                DistributedJobManager.split_into_subjobs(worker, job_data, loaded_project_local_path)
-            else:
-                logger.debug("Not splitting into subjobs")
-
-            RenderQueue.add_to_render_queue(worker, force_start=job_data.get('force_start', False))
-            if not worker.parent:
-                from src.api.api_server import make_job_ready
-                make_job_ready(worker.id)
-            results.append(worker.json())
-        except FileNotFoundError as e:
-            err_msg = f"Cannot create job: {e}"
-            logger.error(err_msg)
-            results.append({'error': err_msg})
-        except Exception as e:
-            err_msg = f"Exception creating render job: {e}"
-            logger.exception(err_msg)
-            results.append({'error': err_msg})
-
-    return results

src/api/api_server.py

@@ -1,43 +1,65 @@
 #!/usr/bin/env python3
+import concurrent.futures
 import json
 import logging
-import multiprocessing
 import os
 import pathlib
 import shutil
 import socket
 import ssl
 import tempfile
-import threading
 import time
 from datetime import datetime
 from zipfile import ZipFile
 
-import json2html
 import psutil
 import yaml
-from flask import Flask, request, render_template, send_file, after_this_request, Response, redirect, url_for, abort
+from flask import Flask, request, send_file, after_this_request, Response, redirect, url_for, abort
+from sqlalchemy.orm.exc import DetachedInstanceError
 
-from src.api.add_job_helpers import handle_uploaded_project_files, process_zipped_project, create_render_jobs
-from src.api.serverproxy_manager import ServerProxyManager
+from src.api.add_job_helpers import handle_uploaded_project_files, process_zipped_project
+from src.api.preview_manager import PreviewManager
 from src.distributed_job_manager import DistributedJobManager
 from src.engines.core.base_worker import string_to_status, RenderStatus
 from src.engines.engine_manager import EngineManager
 from src.render_queue import RenderQueue, JobNotFoundError
+from src.utilities.benchmark import cpu_benchmark, disk_io_benchmark
 from src.utilities.config import Config
 from src.utilities.misc_helper import system_safe_path, current_system_os, current_system_cpu, \
-    current_system_os_version, config_dir
-from src.utilities.server_helper import generate_thumbnail_for_job
+    current_system_os_version, num_to_alphanumeric
 from src.utilities.zeroconf_server import ZeroconfServer
 
 logger = logging.getLogger()
-server = Flask(__name__, template_folder='web/templates', static_folder='web/static')
+server = Flask(__name__)
 ssl._create_default_https_context = ssl._create_unverified_context  # disable SSL for downloads
 
 categories = [RenderStatus.RUNNING, RenderStatus.ERROR, RenderStatus.NOT_STARTED, RenderStatus.SCHEDULED,
               RenderStatus.COMPLETED, RenderStatus.CANCELLED]
 
 
+# -- Error Handlers --
+
+@server.errorhandler(JobNotFoundError)
+def handle_job_not_found(job_error):
+    return str(job_error), 400
+
+
+@server.errorhandler(DetachedInstanceError)
+def handle_detached_instance(error):
+    # logger.debug(f"detached instance: {error}")
+    return "Unavailable", 503
+
+
+@server.errorhandler(Exception)
+def handle_general_error(general_error):
+    err_msg = f"Server error: {general_error}"
+    logger.error(err_msg)
+    return err_msg, 500
+
+
+# -- Jobs --
+
+
 def sorted_jobs(all_jobs, sort_by_date=True):
     if not sort_by_date:
         sorted_job_list = []
@@ -52,95 +74,67 @@ def sorted_jobs(all_jobs, sort_by_date=True):
     return sorted_job_list
 
 
-@server.route('/')
-@server.route('/index')
-def index():
-    with open(system_safe_path(os.path.join(config_dir(), 'presets.yaml'))) as f:
-        render_presets = yaml.load(f, Loader=yaml.FullLoader)
-
-    return render_template('index.html', all_jobs=sorted_jobs(RenderQueue.all_jobs()),
-                           hostname=server.config['HOSTNAME'], renderer_info=renderer_info(),
-                           render_clients=[server.config['HOSTNAME']], preset_list=render_presets)
-
-
 @server.get('/api/jobs')
 def jobs_json():
     try:
-        hash_token = request.args.get('token', None)
         all_jobs = [x.json() for x in RenderQueue.all_jobs()]
-        job_cache_token = str(json.dumps(all_jobs).__hash__())
-
-        if hash_token and hash_token == job_cache_token:
-            return [], 204  # no need to update
-        else:
-            return {'jobs': all_jobs, 'token': job_cache_token}
+        job_cache_int = int(json.dumps(all_jobs).__hash__())
+        job_cache_token = num_to_alphanumeric(job_cache_int)
+        return {'jobs': all_jobs, 'token': job_cache_token}
+    except DetachedInstanceError as e:
+        raise e
     except Exception as e:
-        logger.exception(f"Exception fetching all_jobs_cached: {e}")
-    return [], 500
+        logger.error(f"Error fetching jobs_json: {e}")
+        raise e
 
 
-@server.route('/ui/job/<job_id>/full_details')
-def job_detail(job_id):
-    found_job = RenderQueue.job_with_id(job_id)
-    table_html = json2html.json2html.convert(json=found_job.json(),
-                                             table_attributes='class="table is-narrow is-striped is-fullwidth"')
-    media_url = None
-    if found_job.file_list() and found_job.status == RenderStatus.COMPLETED:
-        media_basename = os.path.basename(found_job.file_list()[0])
-        media_url = f"/api/job/{job_id}/file/{media_basename}"
-    return render_template('details.html', detail_table=table_html, media_url=media_url,
-                           hostname=server.config['HOSTNAME'], job_status=found_job.status.value.title(),
-                           job=found_job, renderer_info=renderer_info())
+@server.get('/api/jobs_long_poll')
+def long_polling_jobs():
+    try:
+        hash_token = request.args.get('token', None)
+        start_time = time.time()
+        while True:
+            all_jobs = jobs_json()
+            if all_jobs['token'] != hash_token:
+                return all_jobs
+            # Break after 30 seconds to avoid gateway timeout
+            if time.time() - start_time > 30:
+                return {}, 204
+            time.sleep(1)
+    except DetachedInstanceError as e:
+        raise e
+    except Exception as e:
+        logger.error(f"Error fetching long_polling_jobs: {e}")
+        raise e
 
 
 @server.route('/api/job/<job_id>/thumbnail')
 def job_thumbnail(job_id):
-    big_thumb = request.args.get('size', False) == "big"
-    video_ok = request.args.get('video_ok', False)
-    found_job = RenderQueue.job_with_id(job_id, none_ok=True)
-    if found_job:
 
-        os.makedirs(server.config['THUMBS_FOLDER'], exist_ok=True)
-        thumb_video_path = os.path.join(server.config['THUMBS_FOLDER'], found_job.id + '.mp4')
-        thumb_image_path = os.path.join(server.config['THUMBS_FOLDER'], found_job.id + '.jpg')
-        big_video_path = os.path.join(server.config['THUMBS_FOLDER'], found_job.id + '_big.mp4')
-        big_image_path = os.path.join(server.config['THUMBS_FOLDER'], found_job.id + '_big.jpg')
+    try:
+        big_thumb = request.args.get('size', False) == "big"
+        video_ok = request.args.get('video_ok', False)
+        found_job = RenderQueue.job_with_id(job_id, none_ok=False)
 
-        # generate regular thumb if it doesn't exist
-        if not os.path.exists(thumb_video_path) and not os.path.exists(thumb_video_path + '_IN-PROGRESS') and \
-                found_job.status not in [RenderStatus.CANCELLED, RenderStatus.ERROR]:
-            generate_thumbnail_for_job(found_job, thumb_video_path, thumb_image_path, max_width=240)
+        # trigger a thumbnail update - just in case
+        PreviewManager.update_previews_for_job(found_job, wait_until_completion=True, timeout=60)
+        previews = PreviewManager.get_previews_for_job(found_job)
+        all_previews_list = previews.get('output', previews.get('input', []))
 
-        # generate big thumb if it doesn't exist
-        if not os.path.exists(big_video_path) and not os.path.exists(big_image_path + '_IN-PROGRESS') and \
-                found_job.status not in [RenderStatus.CANCELLED, RenderStatus.ERROR]:
-            generate_thumbnail_for_job(found_job, big_video_path, big_image_path, max_width=800)
+        video_previews = [x for x in all_previews_list if x['kind'] == 'video']
+        image_previews = [x for x in all_previews_list if x['kind'] == 'image']
+        filtered_list = video_previews if video_previews and video_ok else image_previews
 
-        # generated videos
-        if video_ok:
-            if big_thumb and os.path.exists(big_video_path) and not os.path.exists(
-                    big_video_path + '_IN-PROGRESS'):
-                return send_file(big_video_path, mimetype="video/mp4")
-            elif os.path.exists(thumb_video_path) and not os.path.exists(thumb_video_path + '_IN-PROGRESS'):
-                return send_file(thumb_video_path, mimetype="video/mp4")
-
-        # Generated thumbs
-        if big_thumb and os.path.exists(big_image_path):
-            return send_file(big_image_path, mimetype='image/jpeg')
-        elif os.path.exists(thumb_image_path):
-            return send_file(thumb_image_path, mimetype='image/jpeg')
-
-        # Misc status icons
-        if found_job.status == RenderStatus.RUNNING:
-            return send_file('../web/static/images/gears.png', mimetype="image/png")
-        elif found_job.status == RenderStatus.CANCELLED:
-            return send_file('../web/static/images/cancelled.png', mimetype="image/png")
-        elif found_job.status == RenderStatus.SCHEDULED:
-            return send_file('../web/static/images/scheduled.png', mimetype="image/png")
-        elif found_job.status == RenderStatus.NOT_STARTED:
-            return send_file('../web/static/images/not_started.png', mimetype="image/png")
-    # errors
-    return send_file('../web/static/images/error.png', mimetype="image/png")
+        # todo - sort by size or other metrics here
+        if filtered_list:
+            preview_to_send = filtered_list[0]
+            mime_types = {'image': 'image/jpeg', 'video': 'video/mp4'}
+            file_mime_type = mime_types.get(preview_to_send['kind'], 'unknown')
+            return send_file(preview_to_send['filename'], mimetype=file_mime_type)
+    except Exception as e:
+        logger.error(f'Error getting thumbnail: {e}')
+        return f'Error getting thumbnail: {e}', 500
+    return "No thumbnail available", 404
 
 
 # Get job file routing
@@ -165,22 +159,17 @@ def filtered_jobs_json(status_val):
         return f'Cannot find jobs with status {status_val}', 400
 
 
-@server.post('/api/job/<job_id>/notify_parent_of_status_change')
-def subjob_status_change(job_id):
+@server.post('/api/job/<job_id>/send_subjob_update_notification')
+def subjob_update_notification(job_id):
     try:
         subjob_details = request.json
         logger.info(f"Subjob to job id: {job_id} is now {subjob_details['status']}")
-        DistributedJobManager.handle_subjob_status_change(RenderQueue.job_with_id(job_id), subjob_data=subjob_details)
+        DistributedJobManager.handle_subjob_update_notification(RenderQueue.job_with_id(job_id), subjob_data=subjob_details)
         return Response(status=200)
     except JobNotFoundError:
         return "Job not found", 404
 
 
-@server.errorhandler(JobNotFoundError)
-def handle_job_not_found(job_error):
-    return f'Cannot find job with ID {job_error.job_id}', 400
-
-
 @server.get('/api/job/<job_id>')
 def get_job_status(job_id):
     return RenderQueue.job_with_id(job_id).json()
@@ -199,25 +188,22 @@ def get_job_logs(job_id):
 
 @server.get('/api/job/<job_id>/file_list')
 def get_file_list(job_id):
-    return RenderQueue.job_with_id(job_id).file_list()
+    return [os.path.basename(x) for x in RenderQueue.job_with_id(job_id).file_list()]
 
 
-@server.get('/api/job/<job_id>/make_ready')
-def make_job_ready(job_id):
-    try:
-        found_job = RenderQueue.job_with_id(job_id)
-        if found_job.status in [RenderStatus.CONFIGURING, RenderStatus.NOT_STARTED]:
-            if found_job.children:
-                for child_key in found_job.children.keys():
-                    child_id = child_key.split('@')[0]
-                    hostname = child_key.split('@')[-1]
-                    ServerProxyManager.get_proxy_for_hostname(hostname).request_data(f'job/{child_id}/make_ready')
-            found_job.status = RenderStatus.NOT_STARTED
-            RenderQueue.save_state()
-            return found_job.json(), 200
-    except Exception as e:
-        return "Error making job ready: {e}", 500
-    return "Not valid command", 405
+@server.route('/api/job/<job_id>/download')
+def download_file(job_id):
+
+    requested_filename = request.args.get('filename')
+    if not requested_filename:
+        return 'Filename required', 400
+
+    found_job = RenderQueue.job_with_id(job_id)
+    for job_filename in found_job.file_list():
+        if os.path.basename(job_filename).lower() == requested_filename.lower():
+            return send_file(job_filename, as_attachment=True, )
+
+    return f"File '{requested_filename}' not found", 404
 
 
 @server.route('/api/job/<job_id>/download_all')
@@ -227,7 +213,10 @@ def download_all(job_id):
     @after_this_request
     def clear_zip(response):
         if zip_filename and os.path.exists(zip_filename):
-            os.remove(zip_filename)
+            try:
+                os.remove(zip_filename)
+            except Exception as e:
+                logger.warning(f"Error removing zip file '{zip_filename}': {e}")
         return response
 
     found_job = RenderQueue.job_with_id(job_id)
@@ -248,8 +237,8 @@ def download_all(job_id):
 def presets():
     presets_path = system_safe_path('config/presets.yaml')
     with open(presets_path) as f:
-        presets = yaml.load(f, Loader=yaml.FullLoader)
-    return presets
+        loaded_presets = yaml.load(f, Loader=yaml.FullLoader)
+    return loaded_presets
 
 
 @server.get('/api/full_status')
@@ -291,18 +280,7 @@ def add_job_handler():
         elif request.form.get('json', None):
             jobs_list = json.loads(request.form['json'])
         else:
-            # Cleanup flat form data into nested structure
-            form_dict = {k: v for k, v in dict(request.form).items() if v}
-            args = {}
-            arg_keys = [k for k in form_dict.keys() if '-arg_' in k]
-            for server_hostname in arg_keys:
-                if form_dict['renderer'] in server_hostname or 'AnyRenderer' in server_hostname:
-                    cleaned_key = server_hostname.split('-arg_')[-1]
-                    args[cleaned_key] = form_dict[server_hostname]
-                form_dict.pop(server_hostname)
-            args['raw'] = form_dict.get('raw_args', None)
-            form_dict['args'] = args
-            jobs_list = [form_dict]
+            return "Invalid data", 400
     except Exception as e:
         err_msg = f"Error processing job data: {e}"
         logger.error(err_msg)
@@ -314,16 +292,13 @@ def add_job_handler():
         if loaded_project_local_path.lower().endswith('.zip'):
             loaded_project_local_path = process_zipped_project(loaded_project_local_path)
 
-        results = create_render_jobs(jobs_list, loaded_project_local_path, referred_name)
-        for response in results:
-            if response.get('error', None):
-                return results, 400
-        if request.args.get('redirect', False):
-            return redirect(url_for('index'))
-        else:
-            return results, 200
+        results = []
+        for new_job_data in jobs_list:
+            new_job = DistributedJobManager.create_render_job(new_job_data, loaded_project_local_path)
+            results.append(new_job.json())
+        return results, 200
     except Exception as e:
-        logger.exception(f"Unknown error adding job: {e}")
+        logger.exception(f"Error adding job: {e}")
     return 'unknown error', 500
 
 
@@ -353,14 +328,10 @@ def delete_job(job_id):
         if server.config['UPLOAD_FOLDER'] in output_dir and os.path.exists(output_dir):
             shutil.rmtree(output_dir)
 
-        # Remove any thumbnails
-        for filename in os.listdir(server.config['THUMBS_FOLDER']):
-            if job_id in filename:
-                os.remove(os.path.join(server.config['THUMBS_FOLDER'], filename))
-
-        thumb_path = os.path.join(server.config['THUMBS_FOLDER'], found_job.id + '.mp4')
-        if os.path.exists(thumb_path):
-            os.remove(thumb_path)
+        try:
+            PreviewManager.delete_previews_for_job(found_job)
+        except Exception as e:
+            logger.error(f"Error deleting previews for {found_job}: {e}")
 
         # See if we own the project_dir (i.e. was it uploaded)
         project_dir = os.path.dirname(os.path.dirname(found_job.input_path))
@@ -390,13 +361,6 @@ def clear_history():
 
 @server.route('/api/status')
 def status():
-    renderer_data = {}
-    for render_class in EngineManager.supported_engines():
-        if EngineManager.all_versions_for_engine(render_class.name):  # only return renderers installed on host
-            renderer_data[render_class.engine.name()] = \
-                {'versions': EngineManager.all_versions_for_engine(render_class.engine.name()),
-                 'is_available': RenderQueue.is_available_for_job(render_class.engine.name())
-                 }
 
     # Get system info
     return {"timestamp": datetime.now().isoformat(),
@@ -410,7 +374,6 @@ def status():
             "memory_available": psutil.virtual_memory().available,
             "memory_percent": psutil.virtual_memory().percent,
             "job_counts": RenderQueue.job_counts(),
-            "renderers": renderer_data,
             "hostname": server.config['HOSTNAME'],
             "port": server.config['PORT']
             }
@@ -418,18 +381,53 @@ def status():
 
 @server.get('/api/renderer_info')
 def renderer_info():
+
+    response_type = request.args.get('response_type', 'standard')
+
+    def process_engine(engine):
+        try:
+            # Get all installed versions of the engine
+            installed_versions = EngineManager.all_versions_for_engine(engine.name())
+            if installed_versions:
+                # Use system-installed versions to avoid permission issues
+                system_installed_versions = [x for x in installed_versions if x['type'] == 'system']
+                install_path = system_installed_versions[0]['path'] if system_installed_versions else \
+                installed_versions[0]['path']
+
+                en = engine(install_path)
+
+                if response_type == 'full':  # Full dataset - Can be slow
+                    return {
+                        en.name(): {
+                            'is_available': RenderQueue.is_available_for_job(en.name()),
+                            'versions': installed_versions,
+                            'supported_extensions': engine.supported_extensions(),
+                            'supported_export_formats': en.get_output_formats(),
+                            'system_info': en.system_info()
+                        }
+                    }
+                elif response_type == 'standard':  # Simpler dataset to reduce response times
+                    return {
+                        en.name(): {
+                            'is_available': RenderQueue.is_available_for_job(en.name()),
+                            'versions': installed_versions,
+                        }
+                    }
+                else:
+                    raise AttributeError(f"Invalid response_type: {response_type}")
+        except Exception as e:
+            logger.error(f'Error fetching details for {engine.name()} renderer: {e}')
+            return {}
+
     renderer_data = {}
-    for engine in EngineManager.supported_engines():
-        # Get all installed versions of engine
-        installed_versions = EngineManager.all_versions_for_engine(engine.name())
-        if installed_versions:
-            # fixme: using system versions only because downloaded versions may have permissions issues
-            system_installed_versions = [x for x in installed_versions if x['type'] == 'system']
-            install_path = system_installed_versions[0]['path'] if system_installed_versions else installed_versions[0]['path']
-            renderer_data[engine.name()] = {'is_available': RenderQueue.is_available_for_job(engine.name()),
-                                            'versions': installed_versions,
-                                            'supported_extensions': engine.supported_extensions(),
-                                            'supported_export_formats': engine(install_path).get_output_formats()}
+    with concurrent.futures.ThreadPoolExecutor() as executor:
+        futures = {executor.submit(process_engine, engine): engine.name() for engine in EngineManager.supported_engines()}
+
+        for future in concurrent.futures.as_completed(futures):
+            result = future.result()
+            if result:
+                renderer_data.update(result)
+
     return renderer_data
 
 
@@ -499,65 +497,35 @@ def get_renderer_help(renderer):
         return f"Cannot find renderer '{renderer}'", 400
 
 
-@server.route('/upload')
-def upload_file_page():
-    return render_template('upload.html', supported_renderers=EngineManager.supported_engines())
+@server.get('/api/cpu_benchmark')
+def get_cpu_benchmark_score():
+    return str(cpu_benchmark(10))
 
 
-def start_server():
-    def eval_loop(delay_sec=1):
-        while True:
-            RenderQueue.evaluate_queue()
-            time.sleep(delay_sec)
+@server.get('/api/disk_benchmark')
+def get_disk_benchmark():
+    results = disk_io_benchmark()
+    return {'write_speed': results[0], 'read_speed': results[-1]}
+
+
+def start_server(hostname=None):
 
     # get hostname
-    local_hostname = socket.gethostname()
-    local_hostname = local_hostname + (".local" if not local_hostname.endswith(".local") else "")
+    if not hostname:
+        local_hostname = socket.gethostname()
+        hostname = local_hostname + (".local" if not local_hostname.endswith(".local") else "")
 
     # load flask settings
-    server.config['HOSTNAME'] = local_hostname
+    server.config['HOSTNAME'] = hostname
     server.config['PORT'] = int(Config.port_number)
     server.config['UPLOAD_FOLDER'] = system_safe_path(os.path.expanduser(Config.upload_folder))
-    server.config['THUMBS_FOLDER'] = system_safe_path(os.path.join(os.path.expanduser(Config.upload_folder), 'thumbs'))
     server.config['MAX_CONTENT_PATH'] = Config.max_content_path
     server.config['enable_split_jobs'] = Config.enable_split_jobs
 
-    # Setup directory for saving engines to
-    EngineManager.engines_path = system_safe_path(os.path.join(os.path.join(os.path.expanduser(Config.upload_folder),
-                                                                            'engines')))
-    os.makedirs(EngineManager.engines_path, exist_ok=True)
-
-    # Debug info
-    logger.debug(f"Upload directory: {server.config['UPLOAD_FOLDER']}")
-    logger.debug(f"Thumbs directory: {server.config['THUMBS_FOLDER']}")
-    logger.debug(f"Engines directory: {EngineManager.engines_path}")
-
     # disable most Flask logging
     flask_log = logging.getLogger('werkzeug')
     flask_log.setLevel(Config.flask_log_level.upper())
 
-    # check for updates for render engines if config'd or on first launch
-    if Config.update_engines_on_launch or not EngineManager.all_engines():
-        EngineManager.update_all_engines()
-
-    # Set up the RenderQueue object
-    RenderQueue.load_state(database_directory=server.config['UPLOAD_FOLDER'])
-    ServerProxyManager.subscribe_to_listener()
-    DistributedJobManager.subscribe_to_listener()
-
-    thread = threading.Thread(target=eval_loop, kwargs={'delay_sec': Config.queue_eval_seconds}, daemon=True)
-    thread.start()
-
-    logger.info(f"Starting Zordon Render Server - Hostname: '{server.config['HOSTNAME']}:'")
-    ZeroconfServer.configure("_zordon._tcp.local.", server.config['HOSTNAME'], server.config['PORT'])
-    ZeroconfServer.properties = {'system_cpu': current_system_cpu(), 'system_cpu_cores': multiprocessing.cpu_count(),
-                                 'system_os': current_system_os(),
-                                 'system_os_version': current_system_os_version()}
-    ZeroconfServer.start()
-
-    try:
-        server.run(host='0.0.0.0', port=server.config['PORT'], debug=Config.flask_debug_enable,
-                   use_reloader=False, threaded=True)
-    finally:
-        RenderQueue.save_state()
-        ZeroconfServer.stop()
+    logger.debug('Starting API server')
+    server.run(host='0.0.0.0', port=server.config['PORT'], debug=Config.flask_debug_enable, use_reloader=False,
+               threaded=True)

src/api/preview_manager.py

@@ -0,0 +1,113 @@
+import logging
+import os
+import subprocess
+import threading
+from pathlib import Path
+
+from src.utilities.ffmpeg_helper import generate_thumbnail, save_first_frame
+
+logger = logging.getLogger()
+supported_video_formats = ['.mp4', '.mov', '.avi', '.mpg', '.mpeg', '.mxf', '.m4v', 'mkv']
+supported_image_formats = ['.jpg', '.png', '.exr', '.tif']
+
+
+class PreviewManager:
+
+    storage_path = None
+    _running_jobs = {}
+
+    @classmethod
+    def __generate_job_preview_worker(cls, job, replace_existing=False, max_width=320):
+
+        # Determine best source file to use for thumbs
+        job_file_list = job.file_list()
+        source_files = job_file_list if job_file_list else [job.input_path]
+        preview_label = "output" if job_file_list else "input"
+
+        # filter by type
+        found_image_files = [f for f in source_files if os.path.splitext(f)[-1].lower() in supported_image_formats]
+        found_video_files = [f for f in source_files if os.path.splitext(f)[-1].lower() in supported_video_formats]
+
+        # check if we even have any valid files to work from
+        if source_files and not found_video_files and not found_image_files:
+            logger.warning(f"No valid image or video files found in files from job: {job}")
+            return
+
+        os.makedirs(cls.storage_path, exist_ok=True)
+        base_path = os.path.join(cls.storage_path, f"{job.id}-{preview_label}-{max_width}")
+        preview_video_path = base_path + '.mp4'
+        preview_image_path = base_path + '.jpg'
+
+        if replace_existing:
+            for x in [preview_image_path, preview_video_path]:
+                try:
+                    os.remove(x)
+                except OSError:
+                    pass
+
+        # Generate image previews
+        if (found_video_files or found_image_files) and not os.path.exists(preview_image_path):
+            try:
+                path_of_source = found_image_files[-1] if found_image_files else found_video_files[-1]
+                logger.debug(f"Generating image preview for {path_of_source}")
+                save_first_frame(source_path=path_of_source, dest_path=preview_image_path, max_width=max_width)
+                logger.debug(f"Successfully created image preview for {path_of_source}")
+            except Exception as e:
+                logger.error(f"Error generating image preview for {job}: {e}")
+
+        # Generate video previews
+        if found_video_files and not os.path.exists(preview_video_path):
+            try:
+                path_of_source = found_video_files[0]
+                logger.debug(f"Generating video preview for {path_of_source}")
+                generate_thumbnail(source_path=path_of_source, dest_path=preview_video_path, max_width=max_width)
+                logger.debug(f"Successfully created video preview for {path_of_source}")
+            except subprocess.CalledProcessError as e:
+                logger.error(f"Error generating video preview for {job}: {e}")
+
+    @classmethod
+    def update_previews_for_job(cls, job, replace_existing=False, wait_until_completion=False, timeout=None):
+        job_thread = cls._running_jobs.get(job.id)
+        if job_thread and job_thread.is_alive():
+            logger.debug(f'Preview generation job already running for {job}')
+        else:
+            job_thread = threading.Thread(target=cls.__generate_job_preview_worker, args=(job, replace_existing,))
+            job_thread.start()
+            cls._running_jobs[job.id] = job_thread
+
+        if wait_until_completion:
+            job_thread.join(timeout=timeout)
+
+    @classmethod
+    def get_previews_for_job(cls, job):
+
+        results = {}
+        try:
+            directory_path = Path(cls.storage_path)
+            preview_files_for_job = [f for f in directory_path.iterdir() if f.is_file() and f.name.startswith(job.id)]
+
+            for preview_filename in preview_files_for_job:
+                try:
+                    pixel_width = str(preview_filename).split('-')[-1]
+                    preview_label = str(os.path.basename(preview_filename)).split('-')[1]
+                    extension = os.path.splitext(preview_filename)[-1].lower()
+                    kind = 'video' if extension in supported_video_formats else \
+                        'image' if extension in supported_image_formats else 'unknown'
+                    results[preview_label] = results.get(preview_label, [])
+                    results[preview_label].append({'filename': str(preview_filename), 'width': pixel_width, 'kind': kind})
+                except IndexError:  # ignore invalid filenames
+                    pass
+        except FileNotFoundError:
+            pass
+        return results
+
+    @classmethod
+    def delete_previews_for_job(cls, job):
+        all_previews = cls.get_previews_for_job(job)
+        flattened_list = [item for sublist in all_previews.values() for item in sublist]
+        for preview in flattened_list:
+            try:
+                logger.debug(f"Removing preview: {preview['filename']}")
+                os.remove(preview['filename'])
+            except OSError as e:
+                logger.error(f"Error removing preview '{preview.get('filename')}': {e}")

src/api/server_proxy.py

@@ -1,30 +1,42 @@
 import json
 import logging
 import os
-import socket
 import threading
 import time
 
 import requests
 from requests_toolbelt.multipart import MultipartEncoder, MultipartEncoderMonitor
+from urllib.parse import urljoin
 
 from src.utilities.misc_helper import is_localhost
 from src.utilities.status_utils import RenderStatus
+from src.utilities.zeroconf_server import ZeroconfServer
 
 status_colors = {RenderStatus.ERROR: "red", RenderStatus.CANCELLED: 'orange1', RenderStatus.COMPLETED: 'green',
                  RenderStatus.NOT_STARTED: "yellow", RenderStatus.SCHEDULED: 'purple',
                  RenderStatus.RUNNING: 'cyan', RenderStatus.WAITING_FOR_SUBJOBS: 'blue'}
 
 categories = [RenderStatus.RUNNING, RenderStatus.WAITING_FOR_SUBJOBS, RenderStatus.ERROR, RenderStatus.NOT_STARTED,
-              RenderStatus.SCHEDULED, RenderStatus.COMPLETED, RenderStatus.CANCELLED, RenderStatus.UNDEFINED]
+              RenderStatus.SCHEDULED, RenderStatus.COMPLETED, RenderStatus.CANCELLED, RenderStatus.UNDEFINED,
+              RenderStatus.CONFIGURING]
 
 logger = logging.getLogger()
-OFFLINE_MAX = 2
+OFFLINE_MAX = 4
 LOOPBACK = '127.0.0.1'
 
 
 class RenderServerProxy:
+    """
+    The ServerProxy class is responsible for interacting with a remote server.
+    It provides methods to request data from the server and store the status of the server.
 
+    Attributes:
+        system_cpu (str): The CPU type of the system.
+        system_cpu_count (int): The number of CPUs in the system.
+        system_os (str): The operating system of the system.
+        system_os_version (str): The version of the operating system.
+    """
+    
     def __init__(self, hostname, server_port="8080"):
         self.hostname = hostname
         self.port = server_port
@@ -35,7 +47,7 @@ class RenderServerProxy:
         self.__background_thread = None
         self.__offline_flags = 0
         self.update_cadence = 5
-        self.is_localhost = is_localhost(hostname)
+        self.is_localhost = bool(is_localhost(hostname))
 
         # Cache some basic server info
         self.system_cpu = None
@@ -43,6 +55,9 @@ class RenderServerProxy:
         self.system_os = None
         self.system_os_version = None
 
+    def __repr__(self):
+        return f"<RenderServerProxy - {self.hostname}>"
+
     def connect(self):
         return self.status()
 
@@ -50,7 +65,7 @@ class RenderServerProxy:
         if self.__update_in_background:
             return self.__offline_flags < OFFLINE_MAX
         else:
-            return self.connect() is not None
+            return self.get_status() is not None
 
     def status(self):
         if not self.is_online():
@@ -61,8 +76,9 @@ class RenderServerProxy:
     def request_data(self, payload, timeout=5):
         try:
             req = self.request(payload, timeout)
-            if req.ok and req.status_code == 200:
+            if req.ok:
                 self.__offline_flags = 0
+            if req.status_code == 200:
                 return req.json()
         except json.JSONDecodeError as e:
             logger.debug(f"JSON decode error: {e}")
@@ -74,10 +90,18 @@ class RenderServerProxy:
             self.__offline_flags = self.__offline_flags + 1
         except Exception as e:
             logger.exception(f"Uncaught exception: {e}")
+
+        # If server unexpectedly drops off the network, stop background updates
+        if self.__offline_flags > OFFLINE_MAX:
+            try:
+                self.stop_background_update()
+            except KeyError:
+                pass
         return None
 
     def request(self, payload, timeout=5):
-        return requests.get(f'http://{self.optimized_hostname()}:{self.port}/api/{payload}', timeout=timeout)
+        hostname = LOOPBACK if self.is_localhost else self.hostname
+        return requests.get(f'http://{hostname}:{self.port}/api/{payload}', timeout=timeout)
 
     def start_background_update(self):
         if self.__update_in_background:
@@ -85,9 +109,11 @@ class RenderServerProxy:
         self.__update_in_background = True
 
         def thread_worker():
+            logger.debug(f'Starting background updates for {self.hostname}')
             while self.__update_in_background:
                 self.__update_job_cache()
                 time.sleep(self.update_cadence)
+            logger.debug(f'Stopping background updates for {self.hostname}')
 
         self.__background_thread = threading.Thread(target=thread_worker)
         self.__background_thread.daemon = True
@@ -104,8 +130,13 @@ class RenderServerProxy:
             self.__update_job_cache(timeout, ignore_token)
         return self.__jobs_cache.copy() if self.__jobs_cache else None
 
-    def __update_job_cache(self, timeout=5, ignore_token=False):
-        url = f'jobs?token={self.__jobs_cache_token}' if self.__jobs_cache_token and not ignore_token else 'jobs'
+    def __update_job_cache(self, timeout=40, ignore_token=False):
+
+        if self.__offline_flags:  # if we're offline, don't bother with the long poll
+            ignore_token = True
+
+        url = f'jobs_long_poll?token={self.__jobs_cache_token}' if (self.__jobs_cache_token and
+                                                                    not ignore_token) else 'jobs'
         status_result = self.request_data(url, timeout=timeout)
         if status_result is not None:
             sorted_jobs = []
@@ -117,8 +148,7 @@ class RenderServerProxy:
             self.__jobs_cache_token = status_result['token']
 
     def get_data(self, timeout=5):
-        all_data = self.request_data('full_status', timeout=timeout)
-        return all_data
+        return self.request_data('full_status', timeout=timeout)
 
     def cancel_job(self, job_id, confirm=False):
         return self.request_data(f'job/{job_id}/cancel?confirm={confirm}')
@@ -128,7 +158,7 @@ class RenderServerProxy:
 
     def get_status(self):
         status = self.request_data('status')
-        if not self.system_cpu:
+        if status and not self.system_cpu:
             self.system_cpu = status['system_cpu']
             self.system_cpu_count = status['cpu_count']
             self.system_os = status['system_os']
@@ -141,56 +171,117 @@ class RenderServerProxy:
     def get_all_engines(self):
         return self.request_data('all_engines')
 
-    def notify_parent_of_status_change(self, parent_id, subjob):
-        return requests.post(f'http://{self.optimized_hostname()}:{self.port}/api/job/{parent_id}/notify_parent_of_status_change',
+    def send_subjob_update_notification(self, parent_id, subjob):
+        """
+        Notifies the parent job of an update in a subjob.
+
+        Args:
+            parent_id (str): The ID of the parent job.
+            subjob (Job): The subjob that has updated.
+
+        Returns:
+            Response: The response from the server.
+        """
+        hostname = LOOPBACK if self.is_localhost else self.hostname
+        return requests.post(f'http://{hostname}:{self.port}/api/job/{parent_id}/send_subjob_update_notification',
                              json=subjob.json())
 
     def post_job_to_server(self, file_path, job_list, callback=None):
+        """
+        Posts a job to the server.
 
-        # bypass uploading file if posting to localhost
-        if self.is_localhost:
-            jobs_with_path = [{**item, "local_path": file_path} for item in job_list]
-            return requests.post(f'http://{LOOPBACK}:{self.port}/api/add_job', data=json.dumps(jobs_with_path),
-                                     headers={'Content-Type': 'application/json'})
+        Args:
+            file_path (str): The path to the file to upload.
+            job_list (list): A list of jobs to post.
+            callback (function, optional): A callback function to call during the upload. Defaults to None.
 
-        # Prepare the form data
-        encoder = MultipartEncoder({
-            'file': (os.path.basename(file_path), open(file_path, 'rb'), 'application/octet-stream'),
-            'json': (None, json.dumps(job_list), 'application/json'),
-        })
+        Returns:
+            Response: The response from the server.
+        """
+        try:
+            # Check if file exists
+            if not os.path.exists(file_path):
+                raise FileNotFoundError(f"File not found: {file_path}")
 
-        # Create a monitor that will track the upload progress
-        if callback:
-            monitor = MultipartEncoderMonitor(encoder, callback(encoder))
-        else:
-            monitor = MultipartEncoderMonitor(encoder)
+            # Bypass uploading file if posting to localhost
+            if self.is_localhost:
+                jobs_with_path = [{'local_path': file_path, **item} for item in job_list]
+                job_data = json.dumps(jobs_with_path)
+                url = urljoin(f'http://{LOOPBACK}:{self.port}', '/api/add_job')
+                headers = {'Content-Type': 'application/json'}
+                return requests.post(url, data=job_data, headers=headers)
 
-        # Send the request
-        headers = {'Content-Type': monitor.content_type}
-        return requests.post(f'http://{self.hostname}:{self.port}/api/add_job', data=monitor, headers=headers)
+            # Prepare the form data for remote host
+            with open(file_path, 'rb') as file:
+                encoder = MultipartEncoder({
+                    'file': (os.path.basename(file_path), file, 'application/octet-stream'),
+                    'json': (None, json.dumps(job_list), 'application/json'),
+                })
 
-    def get_job_files(self, job_id, save_path):
-        url = f"http://{self.optimized_hostname()}:{self.port}/api/job/{job_id}/download_all"
-        return self.download_file(url, filename=save_path)
+                # Create a monitor that will track the upload progress
+                monitor = MultipartEncoderMonitor(encoder, callback) if callback else MultipartEncoderMonitor(encoder)
+                headers = {'Content-Type': monitor.content_type}
+                url = urljoin(f'http://{self.hostname}:{self.port}', '/api/add_job')
+
+                # Send the request with proper resource management
+                with requests.post(url, data=monitor, headers=headers) as response:
+                    return response
+
+        except requests.ConnectionError as e:
+            logger.error(f"Connection error: {e}")
+        except Exception as e:
+            logger.error(f"An error occurred: {e}")
+
+    def get_job_files_list(self, job_id):
+        return self.request_data(f"job/{job_id}/file_list")
+
+    def download_all_job_files(self, job_id, save_path):
+        hostname = LOOPBACK if self.is_localhost else self.hostname
+        url = f"http://{hostname}:{self.port}/api/job/{job_id}/download_all"
+        return self.__download_file_from_url(url, output_filepath=save_path)
+
+    def download_job_file(self, job_id, job_filename, save_path):
+        hostname = LOOPBACK if self.is_localhost else self.hostname
+        url = f"http://{hostname}:{self.port}/api/job/{job_id}/download?filename={job_filename}"
+        return self.__download_file_from_url(url, output_filepath=save_path)
 
     @staticmethod
-    def download_file(url, filename):
+    def __download_file_from_url(url, output_filepath):
         with requests.get(url, stream=True) as r:
             r.raise_for_status()
-            with open(filename, 'wb') as f:
+            with open(output_filepath, 'wb') as f:
                 for chunk in r.iter_content(chunk_size=8192):
                     f.write(chunk)
-        return filename
+        return output_filepath
 
     # --- Renderer --- #
 
-    def get_renderer_info(self, timeout=5):
-        all_data = self.request_data(f'renderer_info', timeout=timeout)
+    def get_renderer_info(self, response_type='standard', timeout=5):
+        """
+        Fetches renderer information from the server.
+
+        Args:
+            response_type (str, optional): Returns standard or full version of renderer info
+            timeout (int, optional): The number of seconds to wait for a response from the server. Defaults to 5.
+
+        Returns:
+            dict: A dictionary containing the renderer information.
+        """
+        all_data = self.request_data(f"renderer_info?response_type={response_type}", timeout=timeout)
         return all_data
 
     def delete_engine(self, engine, version, system_cpu=None):
-        form_data = {'engine': engine, 'version': version, 'system_cpu': system_cpu}
-        return requests.post(f'http://{self.optimized_hostname()}:{self.port}/api/delete_engine', json=form_data)
+        """
+        Sends a request to the server to delete a specific engine.
 
-    def optimized_hostname(self):
-        return LOOPBACK if self.is_localhost else self.hostname
+        Args:
+            engine (str): The name of the engine to delete.
+            version (str): The version of the engine to delete.
+            system_cpu (str, optional): The system CPU type. Defaults to None.
+
+        Returns:
+            Response: The response from the server.
+        """
+        form_data = {'engine': engine, 'version': version, 'system_cpu': system_cpu}
+        hostname = LOOPBACK if self.is_localhost else self.hostname
+        return requests.post(f'http://{hostname}:{self.port}/api/delete_engine', json=form_data)

src/api/serverproxy_manager.py

@@ -17,19 +17,19 @@ class ServerProxyManager:
         pub.subscribe(cls.__zeroconf_state_change, 'zeroconf_state_change')
 
     @classmethod
-    def __zeroconf_state_change(cls, hostname, state_change, info):
+    def __zeroconf_state_change(cls, hostname, state_change):
         if state_change == ServiceStateChange.Added or state_change == ServiceStateChange.Updated:
             cls.get_proxy_for_hostname(hostname)
         else:
+            cls.get_proxy_for_hostname(hostname).stop_background_update()
             cls.server_proxys.pop(hostname)
 
     @classmethod
     def get_proxy_for_hostname(cls, hostname):
         found_proxy = cls.server_proxys.get(hostname)
-        if not found_proxy:
+        if hostname and not found_proxy:
             new_proxy = RenderServerProxy(hostname)
             new_proxy.start_background_update()
             cls.server_proxys[hostname] = new_proxy
             found_proxy = new_proxy
         return found_proxy
-

src/distributed_job_manager.py

@@ -1,14 +1,20 @@
 import logging
 import os
 import socket
+import threading
 import time
 import zipfile
+from concurrent.futures import ThreadPoolExecutor
 
+import requests
 from plyer import notification
 from pubsub import pub
 
+from src.api.preview_manager import PreviewManager
 from src.api.server_proxy import RenderServerProxy
+from src.engines.engine_manager import EngineManager
 from src.render_queue import RenderQueue
+from src.utilities.config import Config
 from src.utilities.misc_helper import get_file_size_human
 from src.utilities.status_utils import RenderStatus, string_to_status
 from src.utilities.zeroconf_server import ZeroconfServer
@@ -28,6 +34,43 @@ class DistributedJobManager:
           This should be called once, typically during the initialization phase.
         """
         pub.subscribe(cls.__local_job_status_changed, 'status_change')
+        pub.subscribe(cls.__local_job_frame_complete, 'frame_complete')
+
+    @classmethod
+    def __local_job_frame_complete(cls, job_id, frame_number, update_interval=5):
+
+        """
+        Responds to the 'frame_complete' pubsub message for local jobs.
+
+        Parameters:
+        job_id (str): The ID of the job that has changed status.
+        old_status (str): The previous status of the job.
+        new_status (str): The new (current) status of the job.
+
+        Note: Do not call directly. Instead, call via the 'frame_complete' pubsub message.
+        """
+
+        render_job = RenderQueue.job_with_id(job_id, none_ok=True)
+        if not render_job:  # ignore jobs not in the queue
+            return
+
+        logger.debug(f"Job {job_id} has completed frame #{frame_number}")
+        replace_existing_previews = (frame_number % update_interval) == 0
+        cls.__job_update_shared(render_job, replace_existing_previews)
+
+    @classmethod
+    def __job_update_shared(cls, render_job, replace_existing_previews=False):
+        # update previews
+        PreviewManager.update_previews_for_job(job=render_job, replace_existing=replace_existing_previews)
+
+        # notify parent to allow individual frames to be copied instead of waiting until the end
+        if render_job.parent:
+            parent_id, parent_hostname = render_job.parent.split('@')[0], render_job.parent.split('@')[-1]
+            try:
+                logger.debug(f'Job {render_job.id} updating parent {parent_id}@{parent_hostname}')
+                RenderServerProxy(parent_hostname).send_subjob_update_notification(parent_id, render_job)
+            except Exception as e:
+                logger.error(f"Error notifying parent {parent_hostname} about update in subjob {render_job.id}: {e}")
 
     @classmethod
     def __local_job_status_changed(cls, job_id, old_status, new_status):
@@ -48,34 +91,34 @@ class DistributedJobManager:
             return
 
         logger.debug(f"Job {job_id} status change: {old_status} -> {new_status}")
-        if render_job.parent:  # If local job is a subjob from a remote server
-            parent_id, hostname = render_job.parent.split('@')[0], render_job.parent.split('@')[-1]
-            RenderServerProxy(hostname).notify_parent_of_status_change(parent_id=parent_id, subjob=render_job)
 
-        # handle cancelling all the children
-        elif render_job.children and new_status in [RenderStatus.CANCELLED, RenderStatus.ERROR]:
-            for child in render_job.children:
-                child_id, hostname = child.split('@')
-                RenderServerProxy(hostname).cancel_job(child_id, confirm=True)
+        cls.__job_update_shared(render_job, replace_existing_previews=(render_job.status == RenderStatus.COMPLETED))
+
+        # Handle children
+        if render_job.children:
+            if new_status in [RenderStatus.CANCELLED, RenderStatus.ERROR]:  # Cancel children if necessary
+                for child in render_job.children:
+                    child_id, child_hostname = child.split('@')
+                    RenderServerProxy(child_hostname).cancel_job(child_id, confirm=True)
 
         # UI Notifications
         try:
             if new_status == RenderStatus.COMPLETED:
-                logger.debug("show render complete notification")
+                logger.debug("Show render complete notification")
                 notification.notify(
                     title='Render Job Complete',
                     message=f'{render_job.name} completed succesfully',
                     timeout=10  # Display time in seconds
                 )
             elif new_status == RenderStatus.ERROR:
-                logger.debug("show render complete notification")
+                logger.debug("Show render error notification")
                 notification.notify(
                     title='Render Job Failed',
                     message=f'{render_job.name} failed rendering',
                     timeout=10  # Display time in seconds
                 )
             elif new_status == RenderStatus.RUNNING:
-                logger.debug("show render complete notification")
+                logger.debug("Show render started notification")
                 notification.notify(
                     title='Render Job Started',
                     message=f'{render_job.name} started rendering',
@@ -84,42 +127,115 @@ class DistributedJobManager:
         except Exception as e:
             logger.debug(f"Unable to show UI notification: {e}")
 
-    @classmethod
-    def handle_subjob_status_change(cls, local_job, subjob_data):
-        """
-        Responds to a status change from a remote subjob and triggers the creation or modification of subjobs as needed.
+    # --------------------------------------------
+    # Create Job
+    # --------------------------------------------
 
-        Parameters:
-        local_job (BaseRenderWorker): The local parent job worker.
-        subjob_data (dict): subjob data sent from remote server.
+    @classmethod
+    def create_render_job(cls, job_data, loaded_project_local_path):
+        """
+        Creates render jobs.
+
+        This method  job data and a local path to a loaded project. It creates and returns new a render job.
+
+        Args:
+            job_data (dict): Job data.
+            loaded_project_local_path (str): The local path to the loaded project.
 
         Returns:
-        None
+            worker: Created job worker
+        """
+
+        # get new output path in output_dir
+        output_path = job_data.get('output_path')
+        if not output_path:
+            loaded_project_filename = os.path.basename(loaded_project_local_path)
+            output_filename = os.path.splitext(loaded_project_filename)[0]
+        else:
+            output_filename = os.path.basename(output_path)
+
+        # Prepare output path
+        output_dir = os.path.join(os.path.dirname(os.path.dirname(loaded_project_local_path)), 'output')
+        output_path = os.path.join(output_dir, output_filename)
+        os.makedirs(output_dir, exist_ok=True)
+        logger.debug(f"New job output path: {output_path}")
+
+        # create & configure jobs
+        worker = EngineManager.create_worker(renderer=job_data['renderer'],
+                                             input_path=loaded_project_local_path,
+                                             output_path=output_path,
+                                             engine_version=job_data.get('engine_version'),
+                                             args=job_data.get('args', {}),
+                                             parent=job_data.get('parent'),
+                                             name=job_data.get('name'))
+        worker.status = job_data.get("initial_status", worker.status)  # todo: is this necessary?
+        worker.priority = int(job_data.get('priority', worker.priority))
+        worker.start_frame = int(job_data.get("start_frame", worker.start_frame))
+        worker.end_frame = int(job_data.get("end_frame", worker.end_frame))
+        worker.watchdog_timeout = Config.worker_process_timeout
+        worker.hostname = socket.gethostname()
+
+        # determine if we can / should split the job
+        if job_data.get("enable_split_jobs", False) and (worker.total_frames > 1) and not worker.parent:
+            cls.split_into_subjobs_async(worker, job_data, loaded_project_local_path)
+        else:
+            logger.debug("Not splitting into subjobs")
+
+        RenderQueue.add_to_render_queue(worker, force_start=job_data.get('force_start', False))
+        PreviewManager.update_previews_for_job(worker)
+
+        return worker
+
+    # --------------------------------------------
+    # Handling Subjobs
+    # --------------------------------------------
+
+    @classmethod
+    def handle_subjob_update_notification(cls, local_job, subjob_data):
+        """
+        Responds to a notification from a remote subjob and the host requests any subsequent updates from the subjob.
+
+        Args:
+            local_job (BaseRenderWorker): The local parent job worker.
+            subjob_data (dict): Subjob data sent from the remote server.
         """
 
         subjob_status = string_to_status(subjob_data['status'])
         subjob_id = subjob_data['id']
-        subjob_hostname = next((hostname.split('@')[1] for hostname in local_job.children if
-                                hostname.split('@')[0] == subjob_id), None)
-        local_job.children[f'{subjob_id}@{subjob_hostname}'] = subjob_data
+        subjob_hostname = subjob_data['hostname']
+        subjob_key = f'{subjob_id}@{subjob_hostname}'
+        old_status = local_job.children.get(subjob_key, {}).get('status')
+        local_job.children[subjob_key] = subjob_data
 
-        logname = f"{local_job.id}:{subjob_id}@{subjob_hostname}"
-        logger.debug(f"Subjob status changed: {logname} -> {subjob_status.value}")
+        logname = f"<Parent: {local_job.id} | Child: {subjob_key}>"
+        if old_status != subjob_status.value:
+            logger.debug(f"Subjob status changed: {logname} -> {subjob_status.value}")
 
-        # Download complete or partial render jobs
-        if subjob_status in [RenderStatus.COMPLETED, RenderStatus.CANCELLED, RenderStatus.ERROR] and \
-                subjob_data['file_count']:
-            download_result = cls.download_from_subjob(local_job, subjob_id, subjob_hostname)
-            if not download_result:
-                # todo: handle error
-                logger.error(f"Unable to download subjob files from {logname} with status {subjob_status.value}")
-
-        if subjob_status == RenderStatus.CANCELLED or subjob_status == RenderStatus.ERROR:
-            # todo: determine missing frames and schedule new job
-            pass
+        cls.download_missing_frames_from_subjob(local_job, subjob_id, subjob_hostname)
 
     @staticmethod
-    def download_from_subjob(local_job, subjob_id, subjob_hostname):
+    def download_missing_frames_from_subjob(local_job, subjob_id, subjob_hostname):
+
+        try:
+            local_files = [os.path.basename(x) for x in local_job.file_list()]
+            subjob_proxy = RenderServerProxy(subjob_hostname)
+            subjob_files = subjob_proxy.get_job_files_list(job_id=subjob_id) or []
+
+            for subjob_filename in subjob_files:
+                if subjob_filename not in local_files:
+                    try:
+                        logger.debug(f"Downloading new file '{subjob_filename}' from {subjob_hostname}")
+                        local_save_path = os.path.join(os.path.dirname(local_job.output_path), subjob_filename)
+                        subjob_proxy.download_job_file(job_id=subjob_id, job_filename=subjob_filename,
+                                                       save_path=local_save_path)
+                        logger.debug(f'Downloaded successfully - {local_save_path}')
+                    except Exception as e:
+                        logger.error(f"Error downloading file '{subjob_filename}' from {subjob_hostname}: {e}")
+        except Exception as e:
+            logger.exception(f'Uncaught exception while trying to download from subjob: {e}')
+
+    @staticmethod
+    def download_all_from_subjob(local_job, subjob_id, subjob_hostname):
         """
         Downloads and extracts files from a completed subjob on a remote server.
 
@@ -140,10 +256,10 @@ class DistributedJobManager:
         try:
             local_job.children[child_key]['download_status'] = 'working'
             logger.info(f"Downloading completed subjob files from {subjob_hostname} to localhost")
-            RenderServerProxy(subjob_hostname).get_job_files(subjob_id, zip_file_path)
+            RenderServerProxy(subjob_hostname).download_all_job_files(subjob_id, zip_file_path)
             logger.info(f"File transfer complete for {logname} - Transferred {get_file_size_human(zip_file_path)}")
         except Exception as e:
-            logger.exception(f"Exception downloading files from remote server: {e}")
+            logger.error(f"Error downloading files from remote server: {e}")
             local_job.children[child_key]['download_status'] = 'failed'
             return False
 
@@ -164,6 +280,7 @@ class DistributedJobManager:
 
     @classmethod
     def wait_for_subjobs(cls, local_job):
+        # todo: rewrite this method
         logger.debug(f"Waiting for subjobs for job {local_job}")
         local_job.status = RenderStatus.WAITING_FOR_SUBJOBS
         statuses_to_download = [RenderStatus.CANCELLED, RenderStatus.ERROR, RenderStatus.COMPLETED]
@@ -203,10 +320,10 @@ class DistributedJobManager:
 
                 # Check if job is finished, but has not had files copied yet over yet
                 if download_status is None and subjob_data['file_count'] and status in statuses_to_download:
-                    download_result = cls.download_from_subjob(local_job, subjob_id, subjob_hostname)
-                    if not download_result:
-                        logger.error("Failed to download from subjob")
-                        # todo: error handling here
+                    try:
+                        cls.download_missing_frames_from_subjob(local_job, subjob_id, subjob_hostname)
+                    except Exception as e:
+                        logger.error(f"Error downloading missing frames from subjob: {e}")
 
                 # Any finished jobs not successfully downloaded at this point are skipped
                 if local_job.children[child_key].get('download_status', None) is None and \
@@ -219,87 +336,112 @@ class DistributedJobManager:
                              f"{', '.join(list(subjobs_not_downloaded().keys()))}")
                 time.sleep(5)
 
+    # --------------------------------------------
+    # Creating Subjobs
+    # --------------------------------------------
+
     @classmethod
-    def split_into_subjobs(cls, worker, job_data, project_path, system_os=None):
+    def split_into_subjobs_async(cls, parent_worker, job_data, project_path, system_os=None):
+        # todo: I don't love this
+        parent_worker.status = RenderStatus.CONFIGURING
+        cls.background_worker = threading.Thread(target=cls.split_into_subjobs, args=(parent_worker, job_data,
+                                                                                      project_path, system_os))
+        cls.background_worker.start()
+
+    @classmethod
+    def split_into_subjobs(cls, parent_worker, job_data, project_path, system_os=None, specific_servers=None):
+        """
+        Splits a job into subjobs and distributes them among available servers.
+
+        This method checks the availability of servers, distributes the work among them, and creates subjobs on each
+        server. If a server is the local host, it adjusts the frame range of the parent job instead of creating a
+        subjob.
+
+        Args:
+            parent_worker (Worker): The worker that is handling the job.
+            job_data (dict): The data for the job to be split.
+            project_path (str): The path to the project associated with the job.
+            system_os (str, optional): The operating system of the servers. Default is any OS.
+            specific_servers (list, optional): List of specific servers to split work between. Defaults to all found.
+        """
 
         # Check availability
-        available_servers = cls.find_available_servers(worker.renderer, system_os)
+        parent_worker.status = RenderStatus.CONFIGURING
+        available_servers = specific_servers if specific_servers else cls.find_available_servers(parent_worker.renderer, system_os)
         logger.debug(f"Splitting into subjobs - Available servers: {available_servers}")
-        subjob_servers = cls.distribute_server_work(worker.start_frame, worker.end_frame, available_servers)
-        local_hostname = socket.gethostname()
+        all_subjob_server_data = cls.distribute_server_work(parent_worker.start_frame, parent_worker.end_frame, available_servers)
 
         # Prep and submit these sub-jobs
-        logger.info(f"Job {worker.id} split plan: {subjob_servers}")
+        logger.info(f"Job {parent_worker.id} split plan: {all_subjob_server_data}")
         try:
-            for server_data in subjob_servers:
-                server_hostname = server_data['hostname']
-                if server_hostname != local_hostname:
-                    post_results = cls.__create_subjob(job_data, local_hostname, project_path, server_data,
-                                                       server_hostname, worker)
-                    if post_results.ok:
-                        server_data['submission_results'] = post_results.json()[0]
-                    else:
-                        logger.error(f"Failed to create subjob on {server_hostname}")
-                        break
+            for subjob_data in all_subjob_server_data:
+                subjob_hostname = subjob_data['hostname']
+                if subjob_hostname != parent_worker.hostname:
+                    post_results = cls.__create_subjob(job_data, project_path, subjob_data, subjob_hostname,
+                                                       parent_worker)
+                    if not post_results.ok:
+                        ValueError(f"Failed to create subjob on {subjob_hostname}")
+
+                    # save child info
+                    submission_results = post_results.json()[0]
+                    child_key = f"{submission_results['id']}@{subjob_hostname}"
+                    parent_worker.children[child_key] = submission_results
                 else:
                     # truncate parent render_job
-                    worker.start_frame = max(server_data['frame_range'][0], worker.start_frame)
-                    worker.end_frame = min(server_data['frame_range'][-1], worker.end_frame)
-                    logger.info(f"Local job now rendering from {worker.start_frame} to {worker.end_frame}")
-                    server_data['submission_results'] = worker.json()
-
-            # check that job posts were all successful.
-            if not all(d.get('submission_results') is not None for d in subjob_servers):
-                raise ValueError("Failed to create all subjobs")  # look into recalculating job #s and use exising jobs
+                    parent_worker.start_frame = max(subjob_data['frame_range'][0], parent_worker.start_frame)
+                    parent_worker.end_frame = min(subjob_data['frame_range'][-1], parent_worker.end_frame)
+                    logger.info(f"Local job now rendering from {parent_worker.start_frame} to {parent_worker.end_frame}")
 
             # start subjobs
-            logger.debug(f"Starting {len(subjob_servers) - 1} attempted subjobs")
-            for server_data in subjob_servers:
-                if server_data['hostname'] != local_hostname:
-                    child_key = f"{server_data['submission_results']['id']}@{server_data['hostname']}"
-                    worker.children[child_key] = server_data['submission_results']
-            worker.name = f"{worker.name}[{worker.start_frame}-{worker.end_frame}]"
-
+            logger.debug(f"Created {len(all_subjob_server_data) - 1} subjobs successfully")
+            parent_worker.name = f"{parent_worker.name}[{parent_worker.start_frame}-{parent_worker.end_frame}]"
+            parent_worker.status = RenderStatus.NOT_STARTED  # todo: this won't work with scheduled starts
         except Exception as e:
             # cancel all the subjobs
             logger.error(f"Failed to split job into subjobs: {e}")
-            logger.debug(f"Cancelling {len(subjob_servers) - 1} attempted subjobs")
-            # [RenderServerProxy(hostname).cancel_job(results['id'], confirm=True) for hostname, results in
-            # submission_results.items()]   # todo: fix this
+            logger.debug(f"Cancelling {len(all_subjob_server_data) - 1} attempted subjobs")
+            RenderServerProxy(parent_worker.hostname).cancel_job(parent_worker.id, confirm=True)
 
     @staticmethod
-    def __create_subjob(job_data, local_hostname, project_path, server_data, server_hostname, worker):
+    def __create_subjob(job_data, project_path, server_data, server_hostname, parent_worker):
         subjob = job_data.copy()
-        subjob['name'] = f"{worker.name}[{server_data['frame_range'][0]}-{server_data['frame_range'][-1]}]"
-        subjob['parent'] = f"{worker.id}@{local_hostname}"
+        subjob['name'] = f"{parent_worker.name}[{server_data['frame_range'][0]}-{server_data['frame_range'][-1]}]"
+        subjob['parent'] = f"{parent_worker.id}@{parent_worker.hostname}"
         subjob['start_frame'] = server_data['frame_range'][0]
         subjob['end_frame'] = server_data['frame_range'][-1]
+        subjob['engine_version'] = parent_worker.renderer_version
         logger.debug(f"Posting subjob with frames {subjob['start_frame']}-"
                      f"{subjob['end_frame']} to {server_hostname}")
         post_results = RenderServerProxy(server_hostname).post_job_to_server(
             file_path=project_path, job_list=[subjob])
         return post_results
 
+    # --------------------------------------------
+    # Server Handling
+    # --------------------------------------------
+
     @staticmethod
-    def distribute_server_work(start_frame, end_frame, available_servers, method='cpu_count'):
+    def distribute_server_work(start_frame, end_frame, available_servers, method='cpu_benchmark'):
         """
         Splits the frame range among available servers proportionally based on their performance (CPU count).
 
-        :param start_frame: int, The start frame number of the animation to be rendered.
-        :param end_frame: int, The end frame number of the animation to be rendered.
-        :param available_servers: list, A list of available server dictionaries. Each server dictionary should include
-        'hostname' and 'cpu_count' keys (see find_available_servers)
-        :param method: str, Optional. Specifies the distribution method. Possible values are 'cpu_count' and 'equally'
+        Args:
+            start_frame (int): The start frame number of the animation to be rendered.
+            end_frame (int): The end frame number of the animation to be rendered.
+            available_servers (list): A list of available server dictionaries. Each server dictionary should include
+            'hostname' and 'cpu_count' keys (see find_available_servers).
+            method (str, optional): Specifies the distribution method. Possible values are 'cpu_benchmark', 'cpu_count'
+            and 'evenly'.
+            Defaults to 'cpu_benchmark'.
 
-
-        :return: A list of server dictionaries where each dictionary includes the frame range and total number of frames
-        to be rendered by the server.
+        Returns:
+            list: A list of server dictionaries where each dictionary includes the frame range and total number of
+            frames to be rendered by the server.
         """
-
         # Calculate respective frames for each server
         def divide_frames_by_cpu_count(frame_start, frame_end, servers):
             total_frames = frame_end - frame_start + 1
-            total_performance = sum(server['cpu_count'] for server in servers)
+            total_cpus = sum(server['cpu_count'] for server in servers)
 
             frame_ranges = {}
             current_frame = frame_start
@@ -310,7 +452,47 @@ class DistributedJobManager:
                     # Give all remaining frames to the last server
                     num_frames = total_frames - allocated_frames
                 else:
-                    num_frames = round((server['cpu_count'] / total_performance) * total_frames)
+                    num_frames = round((server['cpu_count'] / total_cpus) * total_frames)
+                    allocated_frames += num_frames
+
+                frame_end_for_server = current_frame + num_frames - 1
+
+                if current_frame <= frame_end_for_server:
+                    frame_ranges[server['hostname']] = (current_frame, frame_end_for_server)
+                current_frame = frame_end_for_server + 1
+
+            return frame_ranges
+
+        def divide_frames_by_benchmark(frame_start, frame_end, servers):
+
+            def fetch_benchmark(server):
+                try:
+                    benchmark = requests.get(f'http://{server["hostname"]}:{ZeroconfServer.server_port}'
+                                             f'/api/cpu_benchmark').text
+                    server['cpu_benchmark'] = benchmark
+                    logger.debug(f'Benchmark for {server["hostname"]}: {benchmark}')
+                except requests.exceptions.RequestException as e:
+                    logger.error(f'Error fetching benchmark for {server["hostname"]}: {e}')
+
+            # Number of threads to use (can adjust based on your needs or number of servers)
+            threads = len(servers)
+
+            with ThreadPoolExecutor(max_workers=threads) as executor:
+                executor.map(fetch_benchmark, servers)
+
+            total_frames = frame_end - frame_start + 1
+            total_performance = sum(int(server['cpu_benchmark']) for server in servers)
+
+            frame_ranges = {}
+            current_frame = frame_start
+            allocated_frames = 0
+
+            for i, server in enumerate(servers):
+                if i == len(servers) - 1:  # if it's the last server
+                    # Give all remaining frames to the last server
+                    num_frames = total_frames - allocated_frames
+                else:
+                    num_frames = round((int(server['cpu_benchmark']) / total_performance) * total_frames)
                     allocated_frames += num_frames
 
                 frame_end_for_server = current_frame + num_frames - 1
@@ -339,12 +521,18 @@ class DistributedJobManager:
 
             return frame_ranges
 
-        if method == 'equally':
-            breakdown = divide_frames_equally(start_frame, end_frame, available_servers)
-        # elif method == 'benchmark_score':  # todo: implement benchmark score
-        #     pass
+        if len(available_servers) == 1:
+            breakdown = {available_servers[0]['hostname']: (start_frame, end_frame)}
         else:
-            breakdown = divide_frames_by_cpu_count(start_frame, end_frame, available_servers)
+            logger.debug(f'Splitting between {len(available_servers)} servers by {method} method')
+            if method == 'evenly':
+                breakdown = divide_frames_equally(start_frame, end_frame, available_servers)
+            elif method == 'cpu_benchmark':
+                breakdown = divide_frames_by_benchmark(start_frame, end_frame, available_servers)
+            elif method == 'cpu_count':
+                breakdown = divide_frames_by_cpu_count(start_frame, end_frame, available_servers)
+            else:
+                raise ValueError(f"Invalid distribution method: {method}")
 
         server_breakdown = [server for server in available_servers if breakdown.get(server['hostname']) is not None]
         for server in server_breakdown:
@@ -370,3 +558,17 @@ class DistributedJobManager:
                     available_servers.append(response)
 
         return available_servers
+
+
+if __name__ == '__main__':
+    logging.basicConfig(level=logging.INFO, format='%(asctime)s - %(levelname)s - %(message)s')
+
+    ZeroconfServer.configure("_zordon._tcp.local.", 'testing', 8080)
+    ZeroconfServer.start(listen_only=True)
+    print("Starting Zeroconf...")
+    time.sleep(2)
+    available_servers = DistributedJobManager.find_available_servers('blender')
+    print(f"AVAILABLE SERVERS ({len(available_servers)}): {available_servers}")
+    # results = DistributedJobManager.distribute_server_work(1, 100, available_servers)
+    # print(f"RESULTS: {results}")
+    ZeroconfServer.stop()

src/engines/blender/blender_downloader.py

@@ -1,5 +1,6 @@
 import logging
 import re
+import threading
 
 import requests
 
@@ -43,11 +44,13 @@ class BlenderDownloader(EngineDownloader):
             response = requests.get(base_url, timeout=5)
             response.raise_for_status()
 
-            versions_pattern = r'<a href="(?P<file>[^"]+)">blender-(?P<version>[\d\.]+)-(?P<system_os>\w+)-(?P<cpu>\w+).*</a>'
+            versions_pattern = \
+                r'<a href="(?P<file>[^"]+)">blender-(?P<version>[\d\.]+)-(?P<system_os>\w+)-(?P<cpu>\w+).*</a>'
             versions_data = [match.groupdict() for match in re.finditer(versions_pattern, response.text)]
 
             # Filter to just the supported formats
-            versions_data = [item for item in versions_data if any(item["file"].endswith(ext) for ext in supported_formats)]
+            versions_data = [item for item in versions_data if any(item["file"].endswith(ext) for ext in
+                                                                   supported_formats)]
 
             # Filter down OS and CPU
             system_os = system_os or current_system_os()
@@ -78,6 +81,31 @@ class BlenderDownloader(EngineDownloader):
 
         return lts_versions
 
+    @classmethod
+    def all_versions(cls, system_os=None, cpu=None):
+        majors = cls.__get_major_versions()
+        all_versions = []
+        threads = []
+        results = [[] for _ in majors]
+
+        def thread_function(major_version, index, system_os, cpu):
+            results[index] = cls.__get_minor_versions(major_version, system_os, cpu)
+
+        for i, m in enumerate(majors):
+            thread = threading.Thread(target=thread_function, args=(m, i, system_os, cpu))
+            threads.append(thread)
+            thread.start()
+
+        # Wait for all threads to complete
+        for thread in threads:
+            thread.join()
+
+        # Extend all_versions with the results from each thread
+        for result in results:
+            all_versions.extend(result)
+
+        return all_versions
+
     @classmethod
     def find_most_recent_version(cls, system_os=None, cpu=None, lts_only=False):
         try:
@@ -105,11 +133,10 @@ class BlenderDownloader(EngineDownloader):
         try:
             logger.info(f"Requesting download of blender-{version}-{system_os}-{cpu}")
             major_version = '.'.join(version.split('.')[:2])
-            minor_versions = [x for x in cls.__get_minor_versions(major_version, system_os, cpu) if x['version'] == version]
-            # we get the URL instead of calculating it ourselves. May change this
-
+            minor_versions = [x for x in cls.__get_minor_versions(major_version, system_os, cpu) if
+                              x['version'] == version]
             cls.download_and_extract_app(remote_url=minor_versions[0]['url'], download_location=download_location,
-                                           timeout=timeout)
+                                         timeout=timeout)
         except IndexError:
             logger.error("Cannot find requested engine")
 
@@ -117,5 +144,4 @@ class BlenderDownloader(EngineDownloader):
 if __name__ == '__main__':
     logging.basicConfig(level=logging.INFO, format='%(asctime)s - %(name)s - %(levelname)s - %(message)s')
 
-    print(BlenderDownloader.__get_major_versions())
-
+    print(BlenderDownloader.find_most_recent_version())

src/engines/blender/blender_engine.py

@@ -1,5 +1,6 @@
 import json
 import re
+from concurrent.futures import ThreadPoolExecutor
 
 from src.engines.core.base_engine import *
 from src.utilities.misc_helper import system_safe_path
@@ -56,25 +57,27 @@ class Blender(BaseRenderEngine):
         else:
             raise FileNotFoundError(f'Project file not found: {project_path}')
 
-    def run_python_script(self, project_path, script_path, timeout=None):
-        if os.path.exists(project_path) and os.path.exists(script_path):
-            try:
-                return subprocess.run([self.renderer_path(), '-b', project_path, '--python', script_path],
-                                      capture_output=True, timeout=timeout)
-            except Exception as e:
-                logger.warning(f"Error running python script in blender: {e}")
-                pass
-        elif not os.path.exists(project_path):
+    def run_python_script(self, script_path, project_path=None, timeout=None):
+
+        if project_path and not os.path.exists(project_path):
             raise FileNotFoundError(f'Project file not found: {project_path}')
         elif not os.path.exists(script_path):
             raise FileNotFoundError(f'Python script not found: {script_path}')
-        raise Exception("Uncaught exception")
+
+        try:
+            command = [self.renderer_path(), '-b', '--python', script_path]
+            if project_path:
+                command.insert(2, project_path)
+            return subprocess.run(command, capture_output=True, timeout=timeout)
+        except Exception as e:
+            logger.exception(f"Error running python script in blender: {e}")
 
     def get_project_info(self, project_path, timeout=10):
         scene_info = {}
         try:
             script_path = os.path.join(os.path.dirname(os.path.realpath(__file__)), 'scripts', 'get_file_info.py')
-            results = self.run_python_script(project_path, system_safe_path(script_path), timeout=timeout)
+            results = self.run_python_script(project_path=project_path, script_path=system_safe_path(script_path),
+                                             timeout=timeout)
             result_text = results.stdout.decode()
             for line in result_text.splitlines():
                 if line.startswith('SCENE_DATA:'):
@@ -92,7 +95,8 @@ class Blender(BaseRenderEngine):
         try:
             logger.info(f"Starting to pack Blender file: {project_path}")
             script_path = os.path.join(os.path.dirname(os.path.realpath(__file__)), 'scripts', 'pack_project.py')
-            results = self.run_python_script(project_path, system_safe_path(script_path), timeout=timeout)
+            results = self.run_python_script(project_path=project_path, script_path=system_safe_path(script_path),
+                                             timeout=timeout)
 
             result_text = results.stdout.decode()
             dir_name = os.path.dirname(project_path)
@@ -144,12 +148,26 @@ class Blender(BaseRenderEngine):
 
         return options
 
-    def get_detected_gpus(self):
-        # no longer works on 4.0
-        engine_output = subprocess.run([self.renderer_path(), '-E', 'help'], timeout=SUBPROCESS_TIMEOUT,
-                                       capture_output=True).stdout.decode('utf-8')
-        gpu_names = re.findall(r"DETECTED GPU: (.+)", engine_output)
-        return gpu_names
+    def system_info(self):
+        with ThreadPoolExecutor() as executor:
+            future_render_devices = executor.submit(self.get_render_devices)
+            future_engines = executor.submit(self.supported_render_engines)
+            render_devices = future_render_devices.result()
+            engines = future_engines.result()
+
+        return {'render_devices': render_devices, 'engines': engines}
+
+    def get_render_devices(self):
+        script_path = os.path.join(os.path.dirname(os.path.realpath(__file__)), 'scripts', 'get_system_info.py')
+        results = self.run_python_script(script_path=script_path)
+        output = results.stdout.decode()
+        match = re.search(r"GPU DATA:(\[[\s\S]*\])", output)
+        if match:
+            gpu_data_json = match.group(1)
+            gpus_info = json.loads(gpu_data_json)
+            return gpus_info
+        else:
+            logger.error("GPU data not found in the output.")
 
     def supported_render_engines(self):
         engine_output = subprocess.run([self.renderer_path(), '-E', 'help'], timeout=SUBPROCESS_TIMEOUT,
@@ -163,5 +181,5 @@ class Blender(BaseRenderEngine):
 
 
 if __name__ == "__main__":
-    x = Blender.get_detected_gpus()
+    x = Blender().get_render_devices()
     print(x)

src/engines/blender/blender_ui.py

@@ -4,5 +4,6 @@ class BlenderUI:
     def get_options(instance):
         options = [
             {'name': 'engine', 'options': instance.supported_render_engines()},
+            {'name': 'render_device', 'options': ['Any', 'GPU', 'CPU']},
         ]
         return options

src/engines/blender/blender_worker.py

@@ -12,13 +12,7 @@ class BlenderRenderWorker(BaseRenderWorker):
     engine = Blender
 
     def __init__(self, input_path, output_path, engine_path, args=None, parent=None, name=None):
-        super(BlenderRenderWorker, self).__init__(input_path=input_path, output_path=output_path,
-                                                  engine_path=engine_path, args=args, parent=parent, name=name)
-
-        # Args
-        self.blender_engine = self.args.get('engine', 'BLENDER_EEVEE').upper()
-        self.export_format = self.args.get('export_format', None) or 'JPEG'
-        self.camera = self.args.get('camera', None)
+        super(BlenderRenderWorker, self).__init__(input_path=input_path, output_path=output_path, engine_path=engine_path, args=args, parent=parent, name=name)
 
         # Stats
         self.__frame_percent_complete = 0.0
@@ -37,16 +31,44 @@ class BlenderRenderWorker(BaseRenderWorker):
             cmd.append('-b')
         cmd.append(self.input_path)
 
-        # Python expressions
+        # Start Python expressions - # todo: investigate splitting into separate 'setup' script
         cmd.append('--python-expr')
         python_exp = 'import bpy; bpy.context.scene.render.use_overwrite = False;'
-        if self.camera:
-            python_exp = python_exp + f"bpy.context.scene.camera = bpy.data.objects['{self.camera}'];"
-        # insert any other python exp checks here
+
+        # Setup Custom Camera
+        custom_camera = self.args.get('camera', None)
+        if custom_camera:
+            python_exp = python_exp + f"bpy.context.scene.camera = bpy.data.objects['{custom_camera}'];"
+
+        # Setup Render Engines
+        self.args['engine'] = self.args.get('engine', 'CYCLES').upper()  # set default render engine
+        # Configure Cycles
+        if self.args['engine'] == 'CYCLES':
+            # Set Render Device (gpu/cpu/any)
+            render_device = self.args.get('render_device', 'any').lower()
+            if render_device not in ['any', 'gpu', 'cpu']:
+                raise AttributeError(f"Invalid Cycles render device: {render_device}")
+
+            use_gpu = render_device in {'any', 'gpu'}
+            use_cpu = render_device in {'any', 'cpu'}
+
+            python_exp = python_exp + ("exec(\"for device in bpy.context.preferences.addons["
+                                       f"'cycles'].preferences.devices: device.use = {use_cpu} if device.type == 'CPU'"
+                                       f" else {use_gpu}\")")
+
+        # -- insert any other python exp checks / generators here --
+
+        # End Python expressions here
         cmd.append(python_exp)
 
-        path_without_ext = os.path.splitext(self.output_path)[0] + "_"
-        cmd.extend(['-E', self.blender_engine, '-o', path_without_ext, '-F', self.export_format])
+        # Export format
+        export_format = self.args.get('export_format', None) or 'JPEG'
+
+        main_part, ext = os.path.splitext(self.output_path)
+        # Remove the extension only if it is not composed entirely of digits
+        path_without_ext = main_part if not ext[1:].isdigit() else self.output_path
+        path_without_ext += "_"
+        cmd.extend(['-E', blender_engine, '-o', path_without_ext, '-F', export_format])
 
         # set frame range
         cmd.extend(['-s', self.start_frame, '-e', self.end_frame, '-a'])
@@ -84,22 +106,30 @@ class BlenderRenderWorker(BaseRenderWorker):
         elif line.lower().startswith('error'):
             self.log_error(line)
         elif 'Saved' in line or 'Saving' in line or 'quit' in line:
-            match = re.match(r'Time: (.*) \(Saving', line)
-            if match:
-                time_completed = match.groups()[0]
+            render_stats_match = re.match(r'Time: (.*) \(Saving', line)
+            output_filename_match = re.match(r"Saved: .*_(\d+)\.\w+", line)  # try to get frame # from filename
+            if output_filename_match:
+                output_file_number = output_filename_match.groups()[0]
+                try:
+                    self.current_frame = int(output_file_number)
+                    self._send_frame_complete_notification()
+                except ValueError:
+                    pass
+            elif render_stats_match:
+                time_completed = render_stats_match.groups()[0]
                 frame_count = self.current_frame - self.end_frame + self.total_frames
                 logger.info(f'Frame #{self.current_frame} - '
                             f'{frame_count} of {self.total_frames} completed in {time_completed} | '
                             f'Total Elapsed Time: {datetime.now() - self.start_time}')
-            else:
-                logger.debug(line)
         else:
             pass
             # if len(line.strip()):
             #     logger.debug(line.strip())
 
     def percent_complete(self):
-        if self.total_frames <= 1:
+        if self.status == RenderStatus.COMPLETED:
+            return 1
+        elif self.total_frames <= 1:
             return self.__frame_percent_complete
         else:
             whole_frame_percent = (self.current_frame - self.start_frame) / self.total_frames

src/engines/blender/scripts/get_system_info.py

@@ -0,0 +1,17 @@
+import bpy
+import json
+
+# Ensure Cycles is available
+bpy.context.preferences.addons['cycles'].preferences.get_devices()
+
+# Collect the devices information
+devices_info = []
+for device in bpy.context.preferences.addons['cycles'].preferences.devices:
+    devices_info.append({
+        "name": device.name,
+        "type": device.type,
+        "use": device.use
+    })
+
+# Print the devices information in JSON format
+print("GPU DATA:" + json.dumps(devices_info))

src/engines/core/base_downloader.py

@@ -98,7 +98,7 @@ class EngineDownloader:
                         zip_ref.extractall(download_location)
                     logger.info(
                         f'Successfully extracted {os.path.basename(temp_downloaded_file_path)} to {download_location}')
-                except zipfile.BadZipFile as e:
+                except zipfile.BadZipFile:
                     logger.error(f'Error: {temp_downloaded_file_path} is not a valid ZIP file.')
                 except FileNotFoundError:
                     logger.error(f'File not found: {temp_downloaded_file_path}')
@@ -110,7 +110,8 @@ class EngineDownloader:
                 for mount_point in dmg.attach():
                     try:
                         copy_directory_contents(mount_point, os.path.join(download_location, output_dir_name))
-                        logger.info(f'Successfully copied {os.path.basename(temp_downloaded_file_path)} to {download_location}')
+                        logger.info(f'Successfully copied {os.path.basename(temp_downloaded_file_path)} '
+                                    f'to {download_location}')
                     except FileNotFoundError:
                         logger.error(f'Error: The source .app bundle does not exist.')
                     except PermissionError:

src/engines/core/base_engine.py

@@ -13,9 +13,13 @@ class BaseRenderEngine(object):
 
     def __init__(self, custom_path=None):
         self.custom_renderer_path = custom_path
-        if not self.renderer_path():
+        if not self.renderer_path() or not os.path.exists(self.renderer_path()):
             raise FileNotFoundError(f"Cannot find path to renderer for {self.name()} instance")
 
+        if not os.access(self.renderer_path(), os.X_OK):
+            logger.warning(f"Path is not executable. Setting permissions to 755 for {self.renderer_path()}")
+            os.chmod(self.renderer_path(), 0o755)
+
     def renderer_path(self):
         return self.custom_renderer_path or self.default_renderer_path()
 
@@ -65,10 +69,11 @@ class BaseRenderEngine(object):
     def get_output_formats(cls):
         raise NotImplementedError(f"get_output_formats not implemented for {cls.__name__}")
 
-    @classmethod
-    def get_arguments(cls):
+    def get_arguments(self):
+        pass
+
+    def system_info(self):
         pass
 
     def perform_presubmission_tasks(self, project_path):
         return project_path
-

src/engines/core/base_worker.py

@@ -5,12 +5,14 @@ import logging
 import os
 import subprocess
 import threading
+import time
 from datetime import datetime
 
 import psutil
 from pubsub import pub
 from sqlalchemy import Column, Integer, String, DateTime, JSON
 from sqlalchemy.ext.declarative import declarative_base
+from sqlalchemy.ext.mutable import MutableDict
 
 from src.utilities.misc_helper import get_time_elapsed
 from src.utilities.status_utils import RenderStatus, string_to_status
@@ -23,6 +25,7 @@ class BaseRenderWorker(Base):
     __tablename__ = 'render_workers'
 
     id = Column(String, primary_key=True)
+    hostname = Column(String, nullable=True)
     input_path = Column(String)
     output_path = Column(String)
     date_created = Column(DateTime)
@@ -36,7 +39,8 @@ class BaseRenderWorker(Base):
     start_frame = Column(Integer)
     end_frame = Column(Integer, nullable=True)
     parent = Column(String, nullable=True)
-    children = Column(JSON)
+    children = Column(MutableDict.as_mutable(JSON))
+    args = Column(MutableDict.as_mutable(JSON))
     name = Column(String)
     file_hash = Column(String)
     _status = Column(String)
@@ -60,6 +64,7 @@ class BaseRenderWorker(Base):
 
         # Essential Info
         self.id = generate_id()
+        self.hostname = None
         self.input_path = input_path
         self.output_path = output_path
         self.args = args or {}
@@ -72,11 +77,12 @@ class BaseRenderWorker(Base):
         self.parent = parent
         self.children = {}
         self.name = name or os.path.basename(input_path)
+        self.maximum_attempts = 3
 
         # Frame Ranges
-        self.project_length = -1
-        self.current_frame = 0  # should this be a 1 ?
-        self.start_frame = 0  # should this be a 1 ?
+        self.project_length = 0  # is this necessary?
+        self.current_frame = 0
+        self.start_frame = 0
         self.end_frame = None
 
         # Logging
@@ -84,15 +90,20 @@ class BaseRenderWorker(Base):
         self.end_time = None
 
         # History
-        self.status = RenderStatus.CONFIGURING
+        self.status = RenderStatus.NOT_STARTED
         self.warnings = []
         self.errors = []
 
         # Threads and processes
-        self.__thread = threading.Thread(target=self.run, args=())
+        self.__thread = threading.Thread(target=self.__run, args=())
         self.__thread.daemon = True
         self.__process = None
         self.last_output = None
+        self.__last_output_time = None
+        self.watchdog_timeout = 120
+
+    def __repr__(self):
+        return f"<Job id:{self.id} p{self.priority} {self.renderer}-{self.renderer_version} '{self.name}' status:{self.status.value}>"
 
     @property
     def total_frames(self):
@@ -116,19 +127,16 @@ class BaseRenderWorker(Base):
                 self._status = RenderStatus.CANCELLED.value
         return string_to_status(self._status)
 
-    def validate(self):
-        if not os.path.exists(self.input_path):
-            raise FileNotFoundError(f"Cannot find input path: {self.input_path}")
-        self.generate_subprocess()
+    def _send_frame_complete_notification(self):
+        pub.sendMessage('frame_complete', job_id=self.id, frame_number=self.current_frame)
 
     def generate_subprocess(self):
         # Convert raw args from string if available and catch conflicts
         generated_args = [str(x) for x in self.generate_worker_subprocess()]
         generated_args_flags = [x for x in generated_args if x.startswith('-')]
         if len(generated_args_flags) != len(set(generated_args_flags)):
-            msg = "Cannot generate subprocess - Multiple arg conflicts detected"
+            msg = f"Cannot generate subprocess - Multiple arg conflicts detected: {generated_args}"
             logger.error(msg)
-            logger.debug(f"Generated args for subprocess: {generated_args}")
             raise ValueError(msg)
         return generated_args
 
@@ -156,32 +164,33 @@ class BaseRenderWorker(Base):
 
         if not os.path.exists(self.input_path):
             self.status = RenderStatus.ERROR
-            msg = 'Cannot find input path: {}'.format(self.input_path)
+            msg = f'Cannot find input path: {self.input_path}'
             logger.error(msg)
             self.errors.append(msg)
             return
 
         if not os.path.exists(self.renderer_path):
             self.status = RenderStatus.ERROR
-            msg = 'Cannot find render engine path for {}'.format(self.engine.name())
+            msg = f'Cannot find render engine path for {self.engine.name()}'
             logger.error(msg)
             self.errors.append(msg)
             return
 
         self.status = RenderStatus.RUNNING
         self.start_time = datetime.now()
-        logger.info(f'Starting {self.engine.name()} {self.renderer_version} Render for {self.input_path} | '
-                    f'Frame Count: {self.total_frames}')
         self.__thread.start()
 
-    def run(self):
+    def __run(self):
+        logger.info(f'Starting {self.engine.name()} {self.renderer_version} Render for {self.input_path} | '
+                    f'Frame Count: {self.total_frames}')
+
         # Setup logging
         log_dir = os.path.dirname(self.log_path())
         os.makedirs(log_dir, exist_ok=True)
 
         subprocess_cmds = self.generate_subprocess()
         initial_file_count = len(self.file_list())
-        attempt_number = 0
+        failed_attempts = 0
 
         with open(self.log_path(), "a") as f:
 
@@ -192,47 +201,55 @@ class BaseRenderWorker(Base):
 
             while True:
                 # Log attempt #
-                if attempt_number:
-                    f.write(f'\n{"=" * 80} Attempt #{attempt_number} {"=" * 30}\n\n')
-                    logger.warning(f"Restarting render - Attempt #{attempt_number}")
-                attempt_number += 1
+                if failed_attempts:
+                    if failed_attempts >= self.maximum_attempts:
+                        err_msg = f"Maximum attempts exceeded ({self.maximum_attempts})"
+                        logger.error(err_msg)
+                        self.status = RenderStatus.ERROR
+                        self.errors.append(err_msg)
+                        return
+                    else:
+                        f.write(f'\n{"=" * 20} Attempt #{failed_attempts + 1} {"=" * 20}\n\n')
+                        logger.warning(f"Restarting render - Attempt #{failed_attempts + 1}")
+                        self.status = RenderStatus.RUNNING
 
-                # Start process and get updates
-                self.__process = subprocess.Popen(subprocess_cmds, stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
-                                                  universal_newlines=False)
-
-                for c in io.TextIOWrapper(self.__process.stdout, encoding="utf-8"):  # or another encoding
-                    f.write(c)
-                    self.last_output = c.strip()
-                    self._parse_stdout(c.strip())
-
-                f.write('\n')
-
-                # Check return codes and process
-                return_code = self.__process.wait()
+                return_code = self.__setup_and_run_process(f, subprocess_cmds)
                 self.end_time = datetime.now()
 
-                if self.status in [RenderStatus.CANCELLED, RenderStatus.ERROR]:  # user cancelled
+                message = f"{'=' * 50}\n\n{self.engine.name()} render ended with code {return_code} " \
+                          f"after {self.time_elapsed()}\n\n"
+                f.write(message)
+
+                # Teardown
+                if self.status in [RenderStatus.CANCELLED, RenderStatus.ERROR]:
                     message = f"{self.engine.name()} render ended with status '{self.status}' " \
                               f"after {self.time_elapsed()}"
                     f.write(message)
                     return
 
-                if not return_code:
-                    message = f"{'=' * 50}\n\n{self.engine.name()} render completed successfully in {self.time_elapsed()}"
+                # if file output hasn't increased, return as error, otherwise restart process.
+                file_count_has_increased = len(self.file_list()) > initial_file_count
+                if (self.status == RenderStatus.RUNNING) and file_count_has_increased and not return_code:
+                    message = (f"{'=' * 50}\n\n{self.engine.name()} render completed successfully in "
+                               f"{self.time_elapsed()}\n")
                     f.write(message)
                     break
 
-                # Handle non-zero return codes
-                message = f"{'=' * 50}\n\n{self.engine.name()} render failed with code {return_code} " \
-                          f"after {self.time_elapsed()}"
-                f.write(message)
-                self.errors.append(message)
+                if return_code:
+                    err_msg = f"{self.engine.name()} render failed with code {return_code}"
+                    logger.error(err_msg)
+                    self.errors.append(err_msg)
 
-                # if file output hasn't increased, return as error, otherwise restart process.
-                if len(self.file_list()) <= initial_file_count:
-                    self.status = RenderStatus.ERROR
-                    return
+                # handle instances where renderer exits ok but doesnt generate files
+                if not return_code and not file_count_has_increased:
+                    err_msg = (f"{self.engine.name()} render exited ok, but file count has not increased. "
+                               f"Count is still {len(self.file_list())}")
+                    f.write(f'Error: {err_msg}\n\n')
+                    self.errors.append(err_msg)
+
+                # only count the attempt as failed if renderer creates no output - ignore error codes for now
+                if not file_count_has_increased:
+                    failed_attempts += 1
 
         if self.children:
             from src.distributed_job_manager import DistributedJobManager
@@ -244,6 +261,65 @@ class BaseRenderWorker(Base):
         self.status = RenderStatus.COMPLETED
         logger.info(f"Render {self.id}-{self.name} completed successfully after {self.time_elapsed()}")
 
+    def __setup_and_run_process(self, f, subprocess_cmds):
+
+        def watchdog():
+            logger.debug(f'Starting process watchdog for {self} with {self.watchdog_timeout}s timeout')
+            while self.__process.poll() is None:
+                time_since_last_update = time.time() - self.__last_output_time
+                if time_since_last_update > self.watchdog_timeout:
+                    logger.error(f"Process for {self} terminated due to exceeding timeout ({self.watchdog_timeout}s)")
+                    self.__process.kill()
+                    break
+                # logger.debug(f'Watchdog for {self} - Time since last update: {time_since_last_update}')
+                time.sleep(1)
+
+            logger.debug(f'Stopping process watchdog for {self}')
+
+        return_code = -1
+        watchdog_thread = threading.Thread(target=watchdog)
+        watchdog_thread.daemon = True
+
+        try:
+            # Start process and get updates
+            self.__process = subprocess.Popen(subprocess_cmds, stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
+                                              universal_newlines=False)
+
+            # Start watchdog
+            self.__last_output_time = time.time()
+            watchdog_thread.start()
+
+            for c in io.TextIOWrapper(self.__process.stdout, encoding="utf-8"):  # or another encoding
+                self.last_output = c.strip()
+                self.__last_output_time = time.time()
+                try:
+                    f.write(c)
+                    f.flush()
+                    os.fsync(f.fileno())
+                except Exception as e:
+                    logger.error(f"Error saving log to disk: {e}")
+
+                try:
+                    self._parse_stdout(c.strip())
+                except Exception as e:
+                    logger.error(f'Error parsing stdout: {e}')
+
+            f.write('\n')
+
+            # Check return codes and process
+            return_code = self.__process.wait()
+        except Exception as e:
+            message = f'Uncaught error running render process: {e}'
+            f.write(message)
+            logger.exception(message)
+            self.__process.kill()
+
+        # let watchdog end before continuing - prevents multiple watchdogs running when process restarts
+        if watchdog_thread.is_alive():
+            watchdog_thread.join()
+
+        return return_code
+
     def post_processing(self):
         pass
 
@@ -276,6 +352,8 @@ class BaseRenderWorker(Base):
                 self.status = RenderStatus.CANCELLED
 
     def percent_complete(self):
+        if self.status == RenderStatus.COMPLETED:
+            return 1.0
         return 0
 
     def _parse_stdout(self, line):
@@ -297,6 +375,7 @@ class BaseRenderWorker(Base):
         job_dict = {
             'id': self.id,
             'name': self.name,
+            'hostname': self.hostname,
             'input_path': self.input_path,
             'output_path': self.output_path,
             'priority': self.priority,
@@ -316,7 +395,8 @@ class BaseRenderWorker(Base):
             'end_frame': self.end_frame,
             'total_frames': self.total_frames,
             'last_output': getattr(self, 'last_output', None),
-            'log_path': self.log_path()
+            'log_path': self.log_path(),
+            'args': self.args
         }
 
         # convert to json and back to auto-convert dates to iso format

src/engines/engine_manager.py

@@ -2,6 +2,7 @@ import logging
 import os
 import shutil
 import threading
+import concurrent.futures
 
 from src.engines.blender.blender_engine import Blender
 from src.engines.ffmpeg.ffmpeg_engine import FFMPEG
@@ -26,57 +27,75 @@ class EngineManager:
                 return obj
 
     @classmethod
-    def all_engines(cls):
+    def get_engines(cls, filter_name=None):
 
         if not cls.engines_path:
-            raise FileNotFoundError("Engines path must be set before requesting downloads")
+            raise FileNotFoundError("Engine path is not set")
 
         # Parse downloaded engine directory
         results = []
         try:
             all_items = os.listdir(cls.engines_path)
             all_directories = [item for item in all_items if os.path.isdir(os.path.join(cls.engines_path, item))]
+            keys = ["engine", "version", "system_os", "cpu"]  # Define keys for result dictionary
 
             for directory in all_directories:
-                # Split the input string by dashes to get segments
+                # Split directory name into segments
                 segments = directory.split('-')
-
-                # Create a dictionary with named keys
-                keys = ["engine", "version", "system_os", "cpu"]
+                # Create a dictionary mapping keys to corresponding segments
                 result_dict = {keys[i]: segments[i] for i in range(min(len(keys), len(segments)))}
                 result_dict['type'] = 'managed'
 
-                # Figure out the binary name for the path
+                # Initialize binary_name with engine name
                 binary_name = result_dict['engine'].lower()
+                # Determine the correct binary name based on the engine and system_os
                 for eng in cls.supported_engines():
                     if eng.name().lower() == result_dict['engine']:
                         binary_name = eng.binary_names.get(result_dict['system_os'], binary_name)
-
-                # Find path to binary
-                path = None
-                for root, _, files in os.walk(system_safe_path(os.path.join(cls.engines_path, directory))):
-                    if binary_name in files:
-                        path = os.path.join(root, binary_name)
                         break
 
+                # Find the path to the binary file
+                path = next(
+                    (os.path.join(root, binary_name) for root, _, files in
+                     os.walk(system_safe_path(os.path.join(cls.engines_path, directory))) if binary_name in files),
+                    None
+                )
+
                 result_dict['path'] = path
-                results.append(result_dict)
+                # Add the result dictionary to results if it matches the filter_name or if no filter is applied
+                if not filter_name or filter_name == result_dict['engine']:
+                    results.append(result_dict)
         except FileNotFoundError as e:
             logger.warning(f"Cannot find local engines download directory: {e}")
 
-        # add system installs to this list
-        for eng in cls.supported_engines():
-            if eng.default_renderer_path():
-                results.append({'engine': eng.name(), 'version': eng().version(),
-                                'system_os': current_system_os(),
-                                'cpu': current_system_cpu(),
-                                'path': eng.default_renderer_path(), 'type': 'system'})
+        # add system installs to this list - use bg thread because it can be slow
+        def fetch_engine_details(eng):
+            return {
+                'engine': eng.name(),
+                'version': eng().version(),
+                'system_os': current_system_os(),
+                'cpu': current_system_cpu(),
+                'path': eng.default_renderer_path(),
+                'type': 'system'
+            }
+
+        with concurrent.futures.ThreadPoolExecutor() as executor:
+            futures = {
+                executor.submit(fetch_engine_details, eng): eng.name()
+                for eng in cls.supported_engines()
+                if eng.default_renderer_path() and (not filter_name or filter_name == eng.name())
+            }
+
+            for future in concurrent.futures.as_completed(futures):
+                result = future.result()
+                if result:
+                    results.append(result)
 
         return results
 
     @classmethod
-    def all_versions_for_engine(cls, engine):
-        versions = [x for x in cls.all_engines() if x['engine'] == engine]
+    def all_versions_for_engine(cls, engine_name):
+        versions = cls.get_engines(filter_name=engine_name)
         sorted_versions = sorted(versions, key=lambda x: x['version'], reverse=True)
         return sorted_versions
 
@@ -86,19 +105,20 @@ class EngineManager:
         cpu = cpu or current_system_cpu()
 
         try:
-            filtered = [x for x in cls.all_versions_for_engine(engine) if x['system_os'] == system_os and x['cpu'] == cpu]
+            filtered = [x for x in cls.all_versions_for_engine(engine) if x['system_os'] == system_os and
+                        x['cpu'] == cpu]
             return filtered[0]
         except IndexError:
             logger.error(f"Cannot find newest engine version for {engine}-{system_os}-{cpu}")
-            return None
+        return None
 
     @classmethod
     def is_version_downloaded(cls, engine, version, system_os=None, cpu=None):
         system_os = system_os or current_system_os()
         cpu = cpu or current_system_cpu()
 
-        filtered = [x for x in cls.all_engines() if
-                    x['engine'] == engine and x['system_os'] == system_os and x['cpu'] == cpu and x['version'] == version]
+        filtered = [x for x in cls.get_engines(filter_name=engine) if x['system_os'] == system_os and
+                    x['cpu'] == cpu and x['version'] == version]
         return filtered[0] if filtered else False
 
     @classmethod
@@ -107,6 +127,7 @@ class EngineManager:
             downloader = cls.engine_with_name(engine).downloader()
             return downloader.version_is_available_to_download(version=version, system_os=system_os, cpu=cpu)
         except Exception as e:
+            logger.debug(f"Exception in version_is_available_to_download: {e}")
             return None
 
     @classmethod
@@ -115,10 +136,11 @@ class EngineManager:
             downloader = cls.engine_with_name(engine).downloader()
             return downloader.find_most_recent_version(system_os=system_os, cpu=cpu)
         except Exception as e:
+            logger.debug(f"Exception in find_most_recent_version: {e}")
             return None
 
     @classmethod
-    def is_already_downloading(cls, engine, version, system_os=None, cpu=None):
+    def get_existing_download_task(cls, engine, version, system_os=None, cpu=None):
         for task in cls.download_tasks:
             task_parts = task.name.split('-')
             task_engine, task_version, task_system_os, task_cpu = task_parts[:4]
@@ -126,17 +148,17 @@ class EngineManager:
             if engine == task_engine and version == task_version:
                 if system_os in (task_system_os, None) and cpu in (task_cpu, None):
                     return task
-        return False
+        return None
 
     @classmethod
     def download_engine(cls, engine, version, system_os=None, cpu=None, background=False):
 
         engine_to_download = cls.engine_with_name(engine)
-        existing_task = cls.is_already_downloading(engine, version, system_os, cpu)
+        existing_task = cls.get_existing_download_task(engine, version, system_os, cpu)
         if existing_task:
             logger.debug(f"Already downloading {engine} {version}")
             if not background:
-                existing_task.join()  # If download task exists, wait until its done downloading
+                existing_task.join()  # If download task exists, wait until it's done downloading
             return
         elif not engine_to_download.downloader():
             logger.warning("No valid downloader for this engine. Please update this software manually.")
@@ -150,13 +172,12 @@ class EngineManager:
 
         if background:
             return thread
-        else:
-            thread.join()
-            found_engine = cls.is_version_downloaded(engine, version, system_os, cpu)  # Check that engine downloaded
-            if not found_engine:
-                logger.error(f"Error downloading {engine}")
-            return found_engine
 
+        thread.join()
+        found_engine = cls.is_version_downloaded(engine, version, system_os, cpu)  # Check that engine downloaded
+        if not found_engine:
+            logger.error(f"Error downloading {engine}")
+        return found_engine
 
     @classmethod
     def delete_engine_download(cls, engine, version, system_os=None, cpu=None):
@@ -180,16 +201,22 @@ class EngineManager:
 
     @classmethod
     def update_all_engines(cls):
-        def engine_update_task(engine):
-            logger.debug(f"Checking for updates to {engine.name()}")
-            latest_version = engine.downloader().find_most_recent_version()
-            if latest_version:
-                logger.debug(f"Latest version of {engine.name()} available: {latest_version.get('version')}")
-                if not cls.is_version_downloaded(engine.name(), latest_version.get('version')):
-                    logger.info(f"Downloading latest version of {engine.name()}...")
-                    cls.download_engine(engine=engine.name(), version=latest_version['version'], background=True)
-            else:
-                logger.warning(f"Unable to get check for updates for {engine.name()}")
+        def engine_update_task(engine_class):
+            logger.debug(f"Checking for updates to {engine_class.name()}")
+            latest_version = engine_class.downloader().find_most_recent_version()
+
+            if not latest_version:
+                logger.warning(f"Could not find most recent version of {engine.name()} to download")
+                return
+
+            version_num = latest_version.get('version')
+            if cls.is_version_downloaded(engine_class.name(), version_num):
+                logger.debug(f"Latest version of {engine_class.name()} ({version_num}) already downloaded")
+                return
+
+            # download the engine
+            logger.info(f"Downloading latest version of {engine_class.name()} ({version_num})...")
+            cls.download_engine(engine=engine_class.name(), version=version_num, background=True)
 
         logger.info(f"Checking for updates for render engines...")
         threads = []
@@ -199,20 +226,19 @@ class EngineManager:
                 threads.append(thread)
                 thread.start()
 
-
     @classmethod
     def create_worker(cls, renderer, input_path, output_path, engine_version=None, args=None, parent=None, name=None):
 
         worker_class = cls.engine_with_name(renderer).worker_class()
 
         # check to make sure we have versions installed
-        all_versions = EngineManager.all_versions_for_engine(renderer)
+        all_versions = cls.all_versions_for_engine(renderer)
         if not all_versions:
             raise FileNotFoundError(f"Cannot find any installed {renderer} engines")
 
         # Find the path to the requested engine version or use default
-        engine_path = None if engine_version else all_versions[0]['path']
-        if engine_version:
+        engine_path = None
+        if engine_version and engine_version != 'latest':
             for ver in all_versions:
                 if ver['version'] == engine_version:
                     engine_path = ver['path']
@@ -220,11 +246,14 @@ class EngineManager:
 
             # Download the required engine if not found locally
             if not engine_path:
-                download_result = EngineManager.download_engine(renderer, engine_version)
+                download_result = cls.download_engine(renderer, engine_version)
                 if not download_result:
                     raise FileNotFoundError(f"Cannot download requested version: {renderer} {engine_version}")
                 engine_path = download_result['path']
                 logger.info("Engine downloaded. Creating worker.")
+        else:
+            logger.debug(f"Using latest engine version ({all_versions[0]['version']})")
+            engine_path = all_versions[0]['path']
 
         if not engine_path:
             raise FileNotFoundError(f"Cannot find requested engine version {engine_version}")
@@ -234,7 +263,7 @@ class EngineManager:
 
     @classmethod
     def engine_for_project_path(cls, path):
-        name, extension = os.path.splitext(path)
+        _, extension = os.path.splitext(path)
         extension = extension.lower().strip('.')
         for engine in cls.supported_engines():
             if extension in engine.supported_extensions():
@@ -273,4 +302,4 @@ if __name__ == '__main__':
     # EngineManager.delete_engine_download('blender', '3.2.1', 'macos', 'a')
     EngineManager.engines_path = "/Users/brettwilliams/zordon-uploads/engines"
     # print(EngineManager.is_version_downloaded("ffmpeg", "6.0"))
-    print(EngineManager.all_engines())
+    print(EngineManager.get_engines())

src/engines/ffmpeg/ffmpeg_downloader.py

@@ -90,7 +90,7 @@ class FFMPEGDownloader(EngineDownloader):
         return releases
 
     @classmethod
-    def __all_versions(cls, system_os=None, cpu=None):
+    def all_versions(cls, system_os=None, cpu=None):
         system_os = system_os or current_system_os()
         cpu = cpu or current_system_cpu()
         versions_per_os = {'linux': cls.__get_linux_versions, 'macos': cls.__get_macos_versions,
@@ -131,14 +131,14 @@ class FFMPEGDownloader(EngineDownloader):
         try:
             system_os = system_os or current_system_os()
             cpu = cpu or current_system_cpu()
-            return cls.__all_versions(system_os, cpu)[0]
-        except (IndexError, requests.exceptions.RequestException):
-            logger.error(f"Cannot get most recent version of ffmpeg")
+            return cls.all_versions(system_os, cpu)[0]
+        except (IndexError, requests.exceptions.RequestException) as e:
+            logger.error(f"Cannot get most recent version of ffmpeg: {e}")
         return {}
 
     @classmethod
     def version_is_available_to_download(cls, version, system_os=None, cpu=None):
-        for ver in cls.__all_versions(system_os, cpu):
+        for ver in cls.all_versions(system_os, cpu):
             if ver['version'] == version:
                 return ver
         return None
@@ -149,7 +149,7 @@ class FFMPEGDownloader(EngineDownloader):
         cpu = cpu or current_system_cpu()
 
         # Verify requested version is available
-        found_version = [item for item in cls.__all_versions(system_os, cpu) if item['version'] == version]
+        found_version = [item for item in cls.all_versions(system_os, cpu) if item['version'] == version]
         if not found_version:
             logger.error(f"Cannot find FFMPEG version {version} for {system_os} and {cpu}")
             return
@@ -182,4 +182,5 @@ if __name__ == "__main__":
     logging.basicConfig(level=logging.INFO, format='%(asctime)s - %(name)s - %(levelname)s - %(message)s')
     # print(FFMPEGDownloader.download_engine('6.0', '/Users/brett/zordon-uploads/engines/'))
     # print(FFMPEGDownloader.find_most_recent_version(system_os='linux'))
-    print(FFMPEGDownloader.download_engine(version='6.0', download_location='/Users/brett/zordon-uploads/engines/', system_os='linux', cpu='x64'))
+    print(FFMPEGDownloader.download_engine(version='6.0', download_location='/Users/brett/zordon-uploads/engines/',
+                                           system_os='linux', cpu='x64'))

src/engines/ffmpeg/ffmpeg_engine.py

@@ -5,7 +5,6 @@ from src.engines.core.base_engine import *
 
 
 class FFMPEG(BaseRenderEngine):
-
     binary_names = {'linux': 'ffmpeg', 'windows': 'ffmpeg.exe', 'macos': 'ffmpeg'}
 
     @staticmethod
@@ -26,7 +25,7 @@ class FFMPEG(BaseRenderEngine):
     def supported_extensions(cls):
         help_text = (subprocess.check_output([cls().renderer_path(), '-h', 'full'], stderr=subprocess.STDOUT)
                      .decode('utf-8'))
-        found = re.findall('extensions that .* is allowed to access \(default "(.*)"', help_text)
+        found = re.findall(r'extensions that .* is allowed to access \(default "(.*)"', help_text)
         found_extensions = set()
         for match in found:
             found_extensions.update(match.split(','))
@@ -37,7 +36,7 @@ class FFMPEG(BaseRenderEngine):
         try:
             ver_out = subprocess.check_output([self.renderer_path(), '-version'],
                                               timeout=SUBPROCESS_TIMEOUT).decode('utf-8')
-            match = re.match(".*version\s*(\S+)\s*Copyright", ver_out)
+            match = re.match(r".*version\s*([\w.*]+)\W*", ver_out)
             if match:
                 version = match.groups()[0]
         except Exception as e:
@@ -51,8 +50,8 @@ class FFMPEG(BaseRenderEngine):
                 'ffprobe', '-v', 'quiet', '-print_format', 'json',
                 '-show_streams', '-select_streams', 'v', project_path
             ]
-            result = subprocess.run(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE, text=True)
-            video_info = json.loads(result.stdout)
+            output = subprocess.check_output(cmd, stderr=subprocess.STDOUT, text=True)
+            video_info = json.loads(output)
 
             # Extract the necessary information
             video_stream = video_info['streams'][0]
@@ -83,7 +82,7 @@ class FFMPEG(BaseRenderEngine):
     def get_encoders(self):
         raw_stdout = subprocess.check_output([self.renderer_path(), '-encoders'], stderr=subprocess.DEVNULL,
                                              timeout=SUBPROCESS_TIMEOUT).decode('utf-8')
-        pattern = '(?P<type>[VASFXBD.]{6})\s+(?P<name>\S{2,})\s+(?P<description>.*)'
+        pattern = r'(?P<type>[VASFXBD.]{6})\s+(?P<name>\S{2,})\s+(?P<description>.*)'
         encoders = [m.groupdict() for m in re.finditer(pattern, raw_stdout)]
         return encoders
 
@@ -94,8 +93,8 @@ class FFMPEG(BaseRenderEngine):
     def get_all_formats(self):
         try:
             formats_raw = subprocess.check_output([self.renderer_path(), '-formats'], stderr=subprocess.DEVNULL,
-                                                 timeout=SUBPROCESS_TIMEOUT).decode('utf-8')
-            pattern = '(?P<type>[DE]{1,2})\s+(?P<id>\S{2,})\s+(?P<name>.*)'
+                                                  timeout=SUBPROCESS_TIMEOUT).decode('utf-8')
+            pattern = r'(?P<type>[DE]{1,2})\s+(?P<id>\S{2,})\s+(?P<name>.*)'
             all_formats = [m.groupdict() for m in re.finditer(pattern, formats_raw)]
             return all_formats
         except Exception as e:
@@ -119,12 +118,13 @@ class FFMPEG(BaseRenderEngine):
 
     def get_frame_count(self, path_to_file):
         raw_stdout = subprocess.check_output([self.renderer_path(), '-i', path_to_file, '-map', '0:v:0', '-c', 'copy',
-                                               '-f', 'null', '-'], stderr=subprocess.STDOUT,
-                                              timeout=SUBPROCESS_TIMEOUT).decode('utf-8')
+                                              '-f', 'null', '-'], stderr=subprocess.STDOUT,
+                                             timeout=SUBPROCESS_TIMEOUT).decode('utf-8')
         match = re.findall(r'frame=\s*(\d+)', raw_stdout)
         if match:
             frame_number = int(match[-1])
             return frame_number
+        return -1
 
     def get_arguments(self):
         help_text = (subprocess.check_output([self.renderer_path(), '-h', 'long'], stderr=subprocess.STDOUT)
@@ -155,4 +155,4 @@ class FFMPEG(BaseRenderEngine):
 
 
 if __name__ == "__main__":
-    print(FFMPEG().get_all_formats())
+    print(FFMPEG().get_all_formats())

src/engines/ffmpeg/ffmpeg_ui.py

@@ -2,4 +2,4 @@ class FFMPEGUI:
     @staticmethod
     def get_options(instance):
         options = []
-        return options
+        return options

src/engines/ffmpeg/ffmpeg_worker.py

@@ -1,6 +1,5 @@
 #!/usr/bin/env python3
 import re
-import subprocess
 
 from src.engines.core.base_worker import BaseRenderWorker
 from src.engines.ffmpeg.ffmpeg_engine import FFMPEG
@@ -17,7 +16,7 @@ class FFMPEGRenderWorker(BaseRenderWorker):
 
     def generate_worker_subprocess(self):
 
-        cmd = [self.engine.default_renderer_path(), '-y', '-stats', '-i', self.input_path]
+        cmd = [self.renderer_path, '-y', '-stats', '-i', self.input_path]
 
         # Resize frame
         if self.args.get('x_resolution', None) and self.args.get('y_resolution', None):
@@ -29,7 +28,7 @@ class FFMPEGRenderWorker(BaseRenderWorker):
             cmd.extend(raw_args.split(' '))
 
         # Close with output path
-        cmd.append(self.output_path)
+        cmd.extend(['-max_muxing_queue_size', '1024', self.output_path])
         return cmd
 
     def percent_complete(self):

src/init.py

@@ -1,22 +1,27 @@
 ''' app/init.py '''
 import logging
+import multiprocessing
 import os
+import socket
 import sys
 import threading
+import time
 from collections import deque
 
-from PyQt6.QtCore import QObject, pyqtSignal
-from PyQt6.QtWidgets import QApplication
-
-from .render_queue import RenderQueue
-from .ui.main_window import MainWindow
-
 from src.api.api_server import start_server
+from src.api.preview_manager import PreviewManager
+from src.api.serverproxy_manager import ServerProxyManager
+from src.distributed_job_manager import DistributedJobManager
+from src.engines.engine_manager import EngineManager
+from src.render_queue import RenderQueue
 from src.utilities.config import Config
-from src.utilities.misc_helper import system_safe_path
+from src.utilities.misc_helper import system_safe_path, current_system_cpu, current_system_os, current_system_os_version
+from src.utilities.zeroconf_server import ZeroconfServer
+
+logger = logging.getLogger()
 
 
-def run() -> int:
+def run(server_only=False) -> int:
     """
     Initializes the application and runs it.
 
@@ -24,47 +29,130 @@ def run() -> int:
         int: The exit status code.
     """
 
-    # Load Config YAML
-    config_dir = os.path.join(os.path.dirname(os.path.dirname(os.path.abspath(__file__))), 'config')
-    Config.load_config(system_safe_path(os.path.join(config_dir, 'config.yaml')))
-
+    # setup logging
     logging.basicConfig(format='%(asctime)s: %(levelname)s: %(module)s: %(message)s', datefmt='%d-%b-%y %H:%M:%S',
                         level=Config.server_log_level.upper())
-
-    app: QApplication = QApplication(sys.argv)
-
-    # Start server in background
-    background_server = threading.Thread(target=start_server)
-    background_server.daemon = True
-    background_server.start()
+    logging.getLogger("requests").setLevel(logging.WARNING)  # suppress noisy requests/urllib3 logging
+    logging.getLogger("urllib3").setLevel(logging.WARNING)
 
     # Setup logging for console ui
+    buffer_handler = __setup_buffer_handler() if not server_only else None
+
+    logger.info(f"Starting Zordon Render Server")
+    return_code = 0
+    try:
+        # Load Config YAML
+        Config.setup_config_dir()
+        Config.load_config(system_safe_path(os.path.join(Config.config_dir(), 'config.yaml')))
+
+        # configure default paths
+        EngineManager.engines_path = system_safe_path(
+            os.path.join(os.path.join(os.path.expanduser(Config.upload_folder),
+                                      'engines')))
+        os.makedirs(EngineManager.engines_path, exist_ok=True)
+        PreviewManager.storage_path = system_safe_path(
+            os.path.join(os.path.expanduser(Config.upload_folder), 'previews'))
+
+        # Debug info
+        logger.debug(f"Upload directory: {os.path.expanduser(Config.upload_folder)}")
+        logger.debug(f"Thumbs directory: {PreviewManager.storage_path}")
+        logger.debug(f"Engines directory: {EngineManager.engines_path}")
+
+        # Set up the RenderQueue object
+        RenderQueue.load_state(database_directory=system_safe_path(os.path.expanduser(Config.upload_folder)))
+        ServerProxyManager.subscribe_to_listener()
+        DistributedJobManager.subscribe_to_listener()
+
+        # check for updates for render engines if configured or on first launch
+        if Config.update_engines_on_launch or not EngineManager.get_engines():
+            EngineManager.update_all_engines()
+
+        # get hostname
+        local_hostname = socket.gethostname()
+        local_hostname = local_hostname + (".local" if not local_hostname.endswith(".local") else "")
+
+        # configure and start API server
+        api_server = threading.Thread(target=start_server, args=(local_hostname,))
+        api_server.daemon = True
+        api_server.start()
+
+        # start zeroconf server
+        ZeroconfServer.configure("_zordon._tcp.local.", local_hostname, Config.port_number)
+        ZeroconfServer.properties = {'system_cpu': current_system_cpu(),
+                                     'system_cpu_cores': multiprocessing.cpu_count(),
+                                     'system_os': current_system_os(),
+                                     'system_os_version': current_system_os_version()}
+        ZeroconfServer.start()
+        logger.info(f"Zordon Render Server started - Hostname: {local_hostname}")
+
+        RenderQueue.evaluation_inverval = Config.queue_eval_seconds
+        RenderQueue.start()
+
+        # start in gui or server only (cli) mode
+        logger.debug(f"Launching in {'server only' if server_only else 'GUI'} mode")
+        if server_only:  # CLI only
+            api_server.join()
+        else:  # GUI
+            return_code = __show_gui(buffer_handler)
+
+    except KeyboardInterrupt:
+        pass
+    except Exception as e:
+        logging.error(f"Unhandled exception: {e}")
+        return_code = 1
+    finally:
+        # shut down gracefully
+        logger.info(f"Zordon Render Server is preparing to shut down")
+        try:
+            RenderQueue.prepare_for_shutdown()
+        except Exception as e:
+            logger.exception(f"Exception during prepare for shutdown: {e}")
+        ZeroconfServer.stop()
+        logger.info(f"Zordon Render Server has shut down")
+        return sys.exit(return_code)
+
+
+def __setup_buffer_handler():
+    # lazy load GUI frameworks
+    from PyQt6.QtCore import QObject, pyqtSignal
+
+    class BufferingHandler(logging.Handler, QObject):
+        new_record = pyqtSignal(str)
+
+        def __init__(self, capacity=100):
+            logging.Handler.__init__(self)
+            QObject.__init__(self)
+            self.buffer = deque(maxlen=capacity)  # Define a buffer with a fixed capacity
+
+        def emit(self, record):
+            try:
+                msg = self.format(record)
+                self.buffer.append(msg)  # Add message to the buffer
+                self.new_record.emit(msg)  # Emit signal
+            except RuntimeError:
+                pass
+
+        def get_buffer(self):
+            return list(self.buffer)  # Return a copy of the buffer
+
     buffer_handler = BufferingHandler()
     buffer_handler.setFormatter(logging.getLogger().handlers[0].formatter)
     logger = logging.getLogger()
     logger.addHandler(buffer_handler)
+    return buffer_handler
 
+
+def __show_gui(buffer_handler):
+    # lazy load GUI frameworks
+    from PyQt6.QtWidgets import QApplication
+
+    # load application
+    app: QApplication = QApplication(sys.argv)
+
+    # configure main window
+    from src.ui.main_window import MainWindow
     window: MainWindow = MainWindow()
     window.buffer_handler = buffer_handler
     window.show()
 
-    return_code = app.exec()
-    RenderQueue.prepare_for_shutdown()
-    return sys.exit(return_code)
-
-
-class BufferingHandler(logging.Handler, QObject):
-    new_record = pyqtSignal(str)
-
-    def __init__(self, capacity=100):
-        logging.Handler.__init__(self)
-        QObject.__init__(self)
-        self.buffer = deque(maxlen=capacity)  # Define a buffer with a fixed capacity
-
-    def emit(self, record):
-        msg = self.format(record)
-        self.buffer.append(msg)  # Add message to the buffer
-        self.new_record.emit(msg)  # Emit signal
-
-    def get_buffer(self):
-        return list(self.buffer)  # Return a copy of the buffer
+    return app.exec()

src/render_queue.py

@@ -2,12 +2,13 @@ import logging
 import os
 from datetime import datetime
 
+from pubsub import pub
 from sqlalchemy import create_engine
 from sqlalchemy.orm import sessionmaker
+from sqlalchemy.orm.exc import DetachedInstanceError
 
-from src.utilities.status_utils import RenderStatus
-from src.engines.engine_manager import EngineManager
 from src.engines.core.base_worker import Base
+from src.utilities.status_utils import RenderStatus
 
 logger = logging.getLogger()
 
@@ -17,6 +18,9 @@ class JobNotFoundError(Exception):
         super().__init__(args)
         self.job_id = job_id
 
+    def __str__(self):
+        return f"Cannot find job with ID: {self.job_id}"
+
 
 class RenderQueue:
     engine = None
@@ -24,18 +28,46 @@ class RenderQueue:
     job_queue = []
     maximum_renderer_instances = {'blender': 1, 'aerender': 1, 'ffmpeg': 4}
     last_saved_counts = {}
+    is_running = False
+    __eval_thread = None
+    evaluation_inverval = 1
 
-    def __init__(self):
-        pass
+    # --------------------------------------------
+    # Start / Stop Background Updates
+    # --------------------------------------------
+
+    @classmethod
+    def start(cls):
+        logger.debug("Starting render queue updates")
+        cls.is_running = True
+        cls.evaluate_queue()
+
+    @classmethod
+    def __local_job_status_changed(cls, job_id, old_status, new_status):
+        render_job = RenderQueue.job_with_id(job_id, none_ok=True)
+        if render_job and cls.is_running:  # ignore changes from render jobs not in the queue yet
+            logger.debug(f"RenderQueue detected job {job_id} has changed from {old_status} -> {new_status}")
+            RenderQueue.evaluate_queue()
+
+    @classmethod
+    def stop(cls):
+        logger.debug("Stopping render queue updates")
+        cls.is_running = False
+
+    # --------------------------------------------
+    # Queue Management
+    # --------------------------------------------
 
     @classmethod
     def add_to_render_queue(cls, render_job, force_start=False):
-        logger.debug('Adding priority {} job to render queue: {}'.format(render_job.priority, render_job))
+        logger.info(f"Adding job to render queue: {render_job}")
         cls.job_queue.append(render_job)
-        if force_start:
+        if cls.is_running and force_start and render_job.status in (RenderStatus.NOT_STARTED, RenderStatus.SCHEDULED):
             cls.start_job(render_job)
         cls.session.add(render_job)
         cls.save_state()
+        if cls.is_running:
+            cls.evaluate_queue()
 
     @classmethod
     def all_jobs(cls):
@@ -81,6 +113,7 @@ class RenderQueue:
             cls.session = sessionmaker(bind=cls.engine)()
         from src.engines.core.base_worker import BaseRenderWorker
         cls.job_queue = cls.session.query(BaseRenderWorker).all()
+        pub.subscribe(cls.__local_job_status_changed, 'status_change')
 
     @classmethod
     def save_state(cls):
@@ -89,6 +122,7 @@ class RenderQueue:
     @classmethod
     def prepare_for_shutdown(cls):
         logger.debug("Closing session")
+        cls.stop()
         running_jobs = cls.jobs_with_status(RenderStatus.RUNNING)  # cancel all running jobs
         [cls.cancel_job(job) for job in running_jobs]
         cls.save_state()
@@ -97,9 +131,6 @@ class RenderQueue:
     @classmethod
     def is_available_for_job(cls, renderer, priority=2):
 
-        if not EngineManager.all_versions_for_engine(renderer):
-            return False
-
         instances = cls.renderer_instances()
         higher_priority_jobs = [x for x in cls.running_jobs() if x.priority < priority]
         max_allowed_instances = cls.maximum_renderer_instances.get(renderer, 1)
@@ -108,35 +139,38 @@ class RenderQueue:
 
     @classmethod
     def evaluate_queue(cls):
-        not_started = cls.jobs_with_status(RenderStatus.NOT_STARTED, priority_sorted=True)
-        for job in not_started:
-            if cls.is_available_for_job(job.renderer, job.priority):
-                cls.start_job(job)
+        try:
+            not_started = cls.jobs_with_status(RenderStatus.NOT_STARTED, priority_sorted=True)
+            for job in not_started:
+                if cls.is_available_for_job(job.renderer, job.priority):
+                    cls.start_job(job)
 
-        scheduled = cls.jobs_with_status(RenderStatus.SCHEDULED, priority_sorted=True)
-        for job in scheduled:
-            if job.scheduled_start <= datetime.now():
-                logger.debug(f"Starting scheduled job: {job}")
-                cls.start_job(job)
+            scheduled = cls.jobs_with_status(RenderStatus.SCHEDULED, priority_sorted=True)
+            for job in scheduled:
+                if job.scheduled_start <= datetime.now():
+                    logger.debug(f"Starting scheduled job: {job}")
+                    cls.start_job(job)
 
-        if cls.last_saved_counts != cls.job_counts():
-            cls.save_state()
+            if cls.last_saved_counts != cls.job_counts():
+                cls.save_state()
+        except DetachedInstanceError:
+            pass
 
     @classmethod
     def start_job(cls, job):
-        logger.info(f'Starting render: {job.name} - Priority {job.priority}')
+        logger.info(f'Starting job: {job}')
         job.start()
         cls.save_state()
 
     @classmethod
     def cancel_job(cls, job):
-        logger.info(f'Cancelling job ID: {job.id}')
+        logger.info(f'Cancelling job: {job}')
         job.stop()
         return job.status == RenderStatus.CANCELLED
 
     @classmethod
     def delete_job(cls, job):
-        logger.info(f"Deleting job ID: {job.id}")
+        logger.info(f"Deleting job: {job}")
         job.stop()
         cls.job_queue.remove(job)
         cls.session.delete(job)

src/ui/add_job.py

@@ -21,6 +21,12 @@ from src.utilities.zeroconf_server import ZeroconfServer
 class NewRenderJobForm(QWidget):
     def __init__(self, project_path=None):
         super().__init__()
+        self.notes_group = None
+        self.frame_rate_input = None
+        self.resolution_x_input = None
+        self.renderer_group = None
+        self.output_settings_group = None
+        self.resolution_y_input = None
         self.project_path = project_path
 
         # UI
@@ -49,7 +55,7 @@ class NewRenderJobForm(QWidget):
         self.priority_input = None
         self.end_frame_input = None
         self.start_frame_input = None
-        self.output_path_input = None
+        self.render_name_input = None
         self.scene_file_input = None
         self.scene_file_browse_button = None
         self.job_name_input = None
@@ -130,11 +136,11 @@ class NewRenderJobForm(QWidget):
         self.output_settings_group = QGroupBox("Output Settings")
         output_settings_layout = QVBoxLayout(self.output_settings_group)
         # output path
-        output_path_layout = QHBoxLayout()
-        output_path_layout.addWidget(QLabel("Render name:"))
-        self.output_path_input = QLineEdit()
-        output_path_layout.addWidget(self.output_path_input)
-        output_settings_layout.addLayout(output_path_layout)
+        render_name_layout = QHBoxLayout()
+        render_name_layout.addWidget(QLabel("Render name:"))
+        self.render_name_input = QLineEdit()
+        render_name_layout.addWidget(self.render_name_input)
+        output_settings_layout.addLayout(render_name_layout)
         # file format
         file_format_layout = QHBoxLayout()
         file_format_layout.addWidget(QLabel("Format:"))
@@ -186,6 +192,7 @@ class NewRenderJobForm(QWidget):
         # Version
         renderer_layout.addWidget(QLabel("Version:"))
         self.renderer_version_combo = QComboBox()
+        self.renderer_version_combo.addItem('latest')
         renderer_layout.addWidget(self.renderer_version_combo)
         renderer_group_layout.addLayout(renderer_layout)
         # dynamic options
@@ -236,7 +243,7 @@ class NewRenderJobForm(QWidget):
 
     def update_renderer_info(self):
         # get the renderer info and add them all to the ui
-        self.renderer_info = self.server_proxy.get_renderer_info()
+        self.renderer_info = self.server_proxy.get_renderer_info(response_type='full')
         self.renderer_type.addItems(self.renderer_info.keys())
         # select the best renderer for the file type
         engine = EngineManager.engine_for_project_path(self.project_path)
@@ -248,6 +255,7 @@ class NewRenderJobForm(QWidget):
         # load the version numbers
         current_renderer = self.renderer_type.currentText().lower() or self.renderer_type.itemText(0)
         self.renderer_version_combo.clear()
+        self.renderer_version_combo.addItem('latest')
         self.file_format_combo.clear()
         if current_renderer:
             renderer_vers = [version_info['version'] for version_info in self.renderer_info[current_renderer]['versions']]
@@ -273,7 +281,7 @@ class NewRenderJobForm(QWidget):
 
         output_name, _ = os.path.splitext(os.path.basename(self.scene_file_input.text()))
         output_name = output_name.replace(' ', '_')
-        self.output_path_input.setText(output_name)
+        self.render_name_input.setText(output_name)
         file_name = self.scene_file_input.text()
 
         # setup bg worker
@@ -284,7 +292,7 @@ class NewRenderJobForm(QWidget):
     def browse_output_path(self):
         directory = QFileDialog.getExistingDirectory(self, "Select Output Directory")
         if directory:
-            self.output_path_input.setText(directory)
+            self.render_name_input.setText(directory)
 
     def args_help_button_clicked(self):
         url = (f'http://{self.server_proxy.hostname}:{self.server_proxy.port}/api/renderer/'
@@ -308,8 +316,6 @@ class NewRenderJobForm(QWidget):
                 self.renderer_type.setCurrentIndex(0)  #todo: find out why we don't have renderer info yet
                 # not ideal but if we don't have the renderer info we have to pick something
 
-            self.output_path_input.setText(os.path.basename(input_path))
-
             # cleanup progress UI
             self.load_file_group.setHidden(True)
             self.toggle_renderer_enablement(True)
@@ -345,7 +351,7 @@ class NewRenderJobForm(QWidget):
             self.current_engine_options = engine().ui_options()
             for option in self.current_engine_options:
                 h_layout = QHBoxLayout()
-                label = QLabel(option['name'].capitalize() + ':')
+                label = QLabel(option['name'].replace('_', ' ').capitalize() + ':')
                 h_layout.addWidget(label)
                 if option.get('options'):
                     combo_box = QComboBox()
@@ -356,7 +362,7 @@ class NewRenderJobForm(QWidget):
                     text_box = QLineEdit()
                     h_layout.addWidget(text_box)
                 self.renderer_options_layout.addLayout(h_layout)
-        except AttributeError as e:
+        except AttributeError:
             pass
 
     def toggle_renderer_enablement(self, enabled=False):
@@ -442,15 +448,17 @@ class SubmitWorker(QThread):
         hostname = self.window.server_input.currentText()
         job_json = {'owner': psutil.Process().username() + '@' + socket.gethostname(),
                     'renderer': self.window.renderer_type.currentText().lower(),
-                    'renderer_version': self.window.renderer_version_combo.currentText(),
-                    'args': {'raw': self.window.raw_args.text()},
-                    'output_path': self.window.output_path_input.text(),
+                    'engine_version': self.window.renderer_version_combo.currentText(),
+                    'args': {'raw': self.window.raw_args.text(),
+                             'export_format': self.window.file_format_combo.currentText()},
+                    'output_path': self.window.render_name_input.text(),
                     'start_frame': self.window.start_frame_input.value(),
                     'end_frame': self.window.end_frame_input.value(),
                     'priority': self.window.priority_input.currentIndex() + 1,
                     'notes': self.window.notes_input.toPlainText(),
                     'enable_split_jobs': self.window.enable_splitjobs.isChecked(),
-                    'split_jobs_same_os': self.window.splitjobs_same_os.isChecked()}
+                    'split_jobs_same_os': self.window.splitjobs_same_os.isChecked(),
+                    'name': self.window.render_name_input.text()}
 
         # get the dynamic args
         for i in range(self.window.renderer_options_layout.count()):
@@ -479,7 +487,8 @@ class SubmitWorker(QThread):
             for cam in selected_cameras:
                 job_copy = copy.deepcopy(job_json)
                 job_copy['args']['camera'] = cam
-                job_copy['name'] = pathlib.Path(input_path).stem.replace(' ', '_') + "-" + cam.replace(' ', '')
+                job_copy['name'] = job_copy['name'].replace(' ', '-') + "_" + cam.replace(' ', '')
+                job_copy['output_path'] = job_copy['name']
                 job_list.append(job_copy)
         else:
             job_list = [job_json]

src/ui/console.py

@@ -1,4 +1,3 @@
-import sys
 import logging
 
 from PyQt6.QtGui import QFont
@@ -16,7 +15,10 @@ class QSignalHandler(logging.Handler, QObject):
 
     def emit(self, record):
         msg = self.format(record)
-        self.new_record.emit(msg)  # Emit signal
+        try:
+            self.new_record.emit(msg)  # Emit signal
+        except RuntimeError:
+            pass
 
 
 class ConsoleWindow(QMainWindow):

src/ui/engine_browser.py

@@ -12,7 +12,7 @@ from PyQt6.QtWidgets import (
 
 from src.api.server_proxy import RenderServerProxy
 from src.engines.engine_manager import EngineManager
-from src.utilities.misc_helper import is_localhost
+from src.utilities.misc_helper import is_localhost, launch_url
 
 
 class EngineBrowserWindow(QMainWindow):
@@ -98,7 +98,7 @@ class EngineBrowserWindow(QMainWindow):
                 return
 
             table_data = []  # convert the data into a flat list
-            for engine_name, engine_data in raw_server_data.items():
+            for _, engine_data in raw_server_data.items():
                 table_data.extend(engine_data['versions'])
             self.engine_data = table_data
 
@@ -144,15 +144,7 @@ class EngineBrowserWindow(QMainWindow):
 
     def launch_button_click(self):
         engine_info = self.engine_data[self.table_widget.currentRow()]
-        path = engine_info['path']
-        if sys.platform.startswith('darwin'):
-            subprocess.run(['open', path])
-        elif sys.platform.startswith('win32'):
-            os.startfile(path)
-        elif sys.platform.startswith('linux'):
-            subprocess.run(['xdg-open', path])
-        else:
-            raise OSError("Unsupported operating system")
+        launch_url(engine_info['path'])
 
     def install_button_click(self):
         self.update_download_status()

src/ui/main_window.py

@@ -1,13 +1,14 @@
 ''' app/ui/main_window.py '''
 import datetime
+import io
 import logging
 import os
-import socket
 import subprocess
 import sys
 import threading
 import time
 
+import PIL
 from PIL import Image
 from PyQt6.QtCore import Qt, QByteArray, QBuffer, QIODevice, QThread
 from PyQt6.QtGui import QPixmap, QImage, QFont, QIcon
@@ -15,7 +16,6 @@ from PyQt6.QtWidgets import QMainWindow, QWidget, QHBoxLayout, QListWidget, QTab
     QTableWidgetItem, QLabel, QVBoxLayout, QHeaderView, QMessageBox, QGroupBox, QPushButton, QListWidgetItem, \
     QFileDialog
 
-from src.api.server_proxy import RenderServerProxy
 from src.render_queue import RenderQueue
 from src.utilities.misc_helper import get_time_elapsed, resources_dir, is_localhost
 from src.utilities.status_utils import RenderStatus
@@ -29,6 +29,7 @@ from .widgets.proportional_image_label import ProportionalImageLabel
 from .widgets.statusbar import StatusBar
 from .widgets.toolbar import ToolBar
 from src.api.serverproxy_manager import ServerProxyManager
+from src.utilities.misc_helper import launch_url
 
 logger = logging.getLogger()
 
@@ -48,6 +49,11 @@ class MainWindow(QMainWindow):
         super().__init__()
 
         # Load the queue
+        self.job_list_view = None
+        self.server_info_ram = None
+        self.server_info_cpu = None
+        self.server_info_os = None
+        self.server_info_hostname = None
         self.engine_browser_window = None
         self.server_info_group = None
         self.current_hostname = None
@@ -67,7 +73,7 @@ class MainWindow(QMainWindow):
         # Create a QLabel widget to display the image
         self.image_label = ProportionalImageLabel()
         self.image_label.setMaximumSize(700, 500)
-        self.image_label.setFixedHeight(500)
+        self.image_label.setFixedHeight(300)
         self.image_label.setAlignment(Qt.AlignmentFlag.AlignTop | Qt.AlignmentFlag.AlignHCenter)
         self.load_image_path(os.path.join(resources_dir(), 'Rectangle.png'))
 
@@ -177,8 +183,13 @@ class MainWindow(QMainWindow):
 
     def __background_update(self):
         while True:
-            self.update_servers()
-            self.fetch_jobs()
+            try:
+                self.update_servers()
+                self.fetch_jobs()
+            except RuntimeError:
+                pass
+            except Exception as e:
+                logger.error(f"Uncaught exception in background update: {e}")
             time.sleep(0.5)
 
     def closeEvent(self, event):
@@ -278,15 +289,25 @@ class MainWindow(QMainWindow):
 
         def fetch_preview(job_id):
             try:
+                default_image_path = "error.png"
                 before_fetch_hostname = self.current_server_proxy.hostname
+
                 response = self.current_server_proxy.request(f'job/{job_id}/thumbnail?size=big')
                 if response.ok:
-                    import io
-                    image_data = response.content
-                    image = Image.open(io.BytesIO(image_data))
-                    if self.current_server_proxy.hostname == before_fetch_hostname and job_id == \
-                            self.selected_job_ids()[0]:
-                        self.load_image_data(image)
+                    try:
+                        with io.BytesIO(response.content) as image_data_stream:
+                            image = Image.open(image_data_stream)
+                            if self.current_server_proxy.hostname == before_fetch_hostname and job_id == \
+                                    self.selected_job_ids()[0]:
+                                self.load_image_data(image)
+                                return
+                    except PIL.UnidentifiedImageError:
+                        default_image_path = response.text
+                else:
+                    default_image_path = default_image_path or response.text
+
+                self.load_image_path(os.path.join(resources_dir(), default_image_path))
+
             except ConnectionError as e:
                 logger.error(f"Connection error fetching image: {e}")
             except Exception as e:
@@ -329,12 +350,15 @@ class MainWindow(QMainWindow):
             self.topbar.actions_call['Open Files'].setVisible(False)
 
     def selected_job_ids(self):
-        selected_rows = self.job_list_view.selectionModel().selectedRows()
-        job_ids = []
-        for selected_row in selected_rows:
-            id_item = self.job_list_view.item(selected_row.row(), 0)
-            job_ids.append(id_item.text())
-        return job_ids
+        try:
+            selected_rows = self.job_list_view.selectionModel().selectedRows()
+            job_ids = []
+            for selected_row in selected_rows:
+                id_item = self.job_list_view.item(selected_row.row(), 0)
+                job_ids.append(id_item.text())
+            return job_ids
+        except AttributeError:
+            return []
 
     def refresh_job_headers(self):
         self.job_list_view.setHorizontalHeaderLabels(["ID", "Name", "Renderer", "Priority", "Status",
@@ -353,30 +377,36 @@ class MainWindow(QMainWindow):
 
     def load_image_path(self, image_path):
         # Load and set the image using QPixmap
-        pixmap = QPixmap(image_path)
-        if not pixmap:
-            logger.error("Error loading image")
-            return
-        self.image_label.setPixmap(pixmap)
+        try:
+            pixmap = QPixmap(image_path)
+            if not pixmap:
+                logger.error("Error loading image")
+                return
+            self.image_label.setPixmap(pixmap)
+        except Exception as e:
+            logger.error(f"Error loading image path: {e}")
 
     def load_image_data(self, pillow_image):
-        # Convert the Pillow Image to a QByteArray (byte buffer)
-        byte_array = QByteArray()
-        buffer = QBuffer(byte_array)
-        buffer.open(QIODevice.OpenModeFlag.WriteOnly)
-        pillow_image.save(buffer, "PNG")
-        buffer.close()
+        try:
+            # Convert the Pillow Image to a QByteArray (byte buffer)
+            byte_array = QByteArray()
+            buffer = QBuffer(byte_array)
+            buffer.open(QIODevice.OpenModeFlag.WriteOnly)
+            pillow_image.save(buffer, "PNG")
+            buffer.close()
 
-        # Create a QImage from the QByteArray
-        image = QImage.fromData(byte_array)
+            # Create a QImage from the QByteArray
+            image = QImage.fromData(byte_array)
 
-        # Create a QPixmap from the QImage
-        pixmap = QPixmap.fromImage(image)
+            # Create a QPixmap from the QImage
+            pixmap = QPixmap.fromImage(image)
 
-        if not pixmap:
-            logger.error("Error loading image")
-            return
-        self.image_label.setPixmap(pixmap)
+            if not pixmap:
+                logger.error("Error loading image")
+                return
+            self.image_label.setPixmap(pixmap)
+        except Exception as e:
+            logger.error(f"Error loading image data: {e}")
 
     def update_servers(self):
         found_servers = list(set(ZeroconfServer.found_hostnames() + self.added_hostnames))
@@ -401,7 +431,7 @@ class MainWindow(QMainWindow):
         for hostname in found_servers:
             if hostname not in current_server_list:
                 properties = ZeroconfServer.get_hostname_properties(hostname)
-                image_path = os.path.join(resources_dir(), 'icons', f"{properties.get('system_os', 'Monitor')}.png")
+                image_path = os.path.join(resources_dir(), f"{properties.get('system_os', 'Monitor')}.png")
                 list_widget = QListWidgetItem(QIcon(image_path), hostname)
                 self.server_list_view.addItem(list_widget)
 
@@ -438,23 +468,22 @@ class MainWindow(QMainWindow):
 
         # Top Toolbar Buttons
         self.topbar.add_button(
-            "New Job", f"{resources_directory}/icons/AddProduct.png", self.new_job)
+            "Console", f"{resources_directory}/Console.png", self.open_console_window)
         self.topbar.add_button(
-            "Engines", f"{resources_directory}/icons/SoftwareInstaller.png", self.engine_browser)
-        self.topbar.add_button(
-            "Console", f"{resources_directory}/icons/Console.png", self.open_console_window)
+            "Engines", f"{resources_directory}/SoftwareInstaller.png", self.engine_browser)
         self.topbar.add_separator()
         self.topbar.add_button(
-            "Stop Job", f"{resources_directory}/icons/StopSign.png", self.stop_job)
+            "Stop Job", f"{resources_directory}/StopSign.png", self.stop_job)
         self.topbar.add_button(
-            "Delete Job", f"{resources_directory}/icons/Trash.png", self.delete_job)
+            "Delete Job", f"{resources_directory}/Trash.png", self.delete_job)
         self.topbar.add_button(
-            "Render Log", f"{resources_directory}/icons/Document.png", self.job_logs)
+            "Render Log", f"{resources_directory}/Document.png", self.job_logs)
         self.topbar.add_button(
-            "Download", f"{resources_directory}/icons/Download.png", self.download_files)
+            "Download", f"{resources_directory}/Download.png", self.download_files)
         self.topbar.add_button(
-            "Open Files", f"{resources_directory}/icons/SearchFolder.png", self.open_files)
-
+            "Open Files", f"{resources_directory}/SearchFolder.png", self.open_files)
+        self.topbar.add_button(
+            "New Job", f"{resources_directory}/AddProduct.png", self.new_job)
         self.addToolBar(Qt.ToolBarArea.TopToolBarArea, self.topbar)
 
 # -- Toolbar Buttons -- #
@@ -477,7 +506,7 @@ class MainWindow(QMainWindow):
         """
         selected_job_ids = self.selected_job_ids()
         if selected_job_ids:
-            url = f'http://{self.current_server_proxy.optimized_hostname()}:{self.current_server_proxy.port}/api/job/{selected_job_ids[0]}/logs'
+            url = f'http://{self.current_server_proxy.hostname}:{self.current_server_proxy.port}/api/job/{selected_job_ids[0]}/logs'
             self.log_viewer_window = LogViewer(url)
             self.log_viewer_window.show()
 
@@ -546,15 +575,7 @@ class MainWindow(QMainWindow):
         for job_id in job_ids:
             job_info = self.current_server_proxy.get_job_info(job_id)
             path = os.path.dirname(job_info['output_path'])
-
-            if sys.platform.startswith('darwin'):
-                subprocess.run(['open', path])
-            elif sys.platform.startswith('win32'):
-                os.startfile(path)
-            elif sys.platform.startswith('linux'):
-                subprocess.run(['xdg-open', path])
-            else:
-                raise OSError("Unsupported operating system")
+            launch_url(path)
 
     def new_job(self) -> None:
 

src/ui/widgets/dialog.py

@@ -1 +0,0 @@
-''' app/ui/widgets/dialog.py '''

src/ui/widgets/statusbar.py

@@ -32,20 +32,23 @@ class StatusBar(QStatusBar):
 
             # Check for status change every 1s on background thread
             while True:
-                new_status = proxy.status()
-                new_image_name = image_names.get(new_status, 'Synchronize.png')
-                image_path = os.path.join(resources_dir(), 'icons', new_image_name)
-                self.label.setPixmap((QPixmap(image_path).scaled(16, 16, Qt.AspectRatioMode.KeepAspectRatio)))
+                try:
+                    # update status label - get download status
+                    new_status = proxy.status()
+                    if EngineManager.download_tasks:
+                        if len(EngineManager.download_tasks) == 1:
+                            task = EngineManager.download_tasks[0]
+                            new_status = f"{new_status} | Downloading {task.engine.capitalize()} {task.version}..."
+                        else:
+                            new_status = f"{new_status} | Downloading {len(EngineManager.download_tasks)} engines"
+                    self.messageLabel.setText(new_status)
 
-                # add download status
-                if EngineManager.download_tasks:
-                    if len(EngineManager.download_tasks) == 1:
-                        task = EngineManager.download_tasks[0]
-                        new_status = f"{new_status} | Downloading {task.engine.capitalize()} {task.version}..."
-                    else:
-                        new_status = f"{new_status} | Downloading {len(EngineManager.download_tasks)} engines"
-
-                self.messageLabel.setText(new_status)
+                    # update status image
+                    new_image_name = image_names.get(new_status, 'Synchronize.png')
+                    new_image_path = os.path.join(resources_dir(), new_image_name)
+                    self.label.setPixmap((QPixmap(new_image_path).scaled(16, 16, Qt.AspectRatioMode.KeepAspectRatio)))
+                except RuntimeError:  # ignore runtime errors during shutdown
+                    pass
                 time.sleep(1)
 
         background_thread = threading.Thread(target=background_update,)
@@ -54,7 +57,7 @@ class StatusBar(QStatusBar):
 
         # Create a label that holds an image
         self.label = QLabel()
-        image_path = os.path.join(os.path.dirname(os.path.dirname(os.path.dirname(__file__))), 'resources', 'icons',
+        image_path = os.path.join(os.path.dirname(os.path.dirname(os.path.dirname(__file__))), 'resources',
                                   'RedSquare.png')
         pixmap = (QPixmap(image_path).scaled(16, 16, Qt.AspectRatioMode.KeepAspectRatio))
         self.label.setPixmap(pixmap)

src/utilities/benchmark.py

@@ -0,0 +1,78 @@
+import concurrent.futures
+import os
+import time
+import logging
+
+logger = logging.getLogger()
+
+
+def cpu_workload(n):
+    # Simple arithmetic operation for workload
+    while n > 0:
+        n -= 1
+    return n
+
+
+def cpu_benchmark(duration_seconds=10):
+    # Determine the number of available CPU cores
+    num_cores = os.cpu_count()
+
+    # Calculate workload per core, assuming a large number for the workload
+    workload_per_core = 10000000
+
+    # Record start time
+    start_time = time.time()
+
+    # Use ProcessPoolExecutor to utilize all CPU cores
+    with concurrent.futures.ProcessPoolExecutor() as executor:
+        # Launching tasks for each core
+        futures = [executor.submit(cpu_workload, workload_per_core) for _ in range(num_cores)]
+
+        # Wait for all futures to complete, with a timeout to limit the benchmark duration
+        concurrent.futures.wait(futures, timeout=duration_seconds)
+
+    # Record end time
+    end_time = time.time()
+
+    # Calculate the total number of operations (workload) done by all cores
+    total_operations = workload_per_core * num_cores
+    # Calculate the total time taken
+    total_time = end_time - start_time
+    # Calculate operations per second as the score
+    score = total_operations / total_time
+    score = score * 0.0001
+
+    return int(score)
+
+
+def disk_io_benchmark(file_size_mb=100, filename='benchmark_test_file'):
+    write_speed = None
+    read_speed = None
+
+    # Measure write speed
+    start_time = time.time()
+    with open(filename, 'wb') as f:
+        f.write(os.urandom(file_size_mb * 1024 * 1024))  # Write random bytes to file
+    end_time = time.time()
+    write_time = end_time - start_time
+    write_speed = file_size_mb / write_time
+
+    # Measure read speed
+    start_time = time.time()
+    with open(filename, 'rb') as f:
+        content = f.read()
+    end_time = time.time()
+    read_time = end_time - start_time
+    read_speed = file_size_mb / read_time
+
+    # Cleanup
+    os.remove(filename)
+
+    logger.debug(f"Disk Write Speed: {write_speed:.2f} MB/s")
+    logger.debug(f"Disk Read Speed: {read_speed:.2f} MB/s")
+    return write_speed, read_speed
+
+
+if __name__ == '__main__':
+    print(cpu_benchmark())
+    print(disk_io_benchmark())

src/utilities/config.py

@@ -1,5 +1,6 @@
 import os
 import yaml
+from src.utilities.misc_helper import current_system_os, copy_directory_contents
 
 
 class Config:
@@ -9,7 +10,7 @@ class Config:
     max_content_path = 100000000
     server_log_level = 'debug'
     log_buffer_length = 250
-    subjob_connection_timeout = 120
+    worker_process_timeout = 120
     flask_log_level = 'error'
     flask_debug_enable = False
     queue_eval_seconds = 1
@@ -27,10 +28,47 @@ class Config:
         cls.max_content_path = cfg.get('max_content_path', cls.max_content_path)
         cls.server_log_level = cfg.get('server_log_level', cls.server_log_level)
         cls.log_buffer_length = cfg.get('log_buffer_length', cls.log_buffer_length)
-        cls.subjob_connection_timeout = cfg.get('subjob_connection_timeout', cls.subjob_connection_timeout)
+        cls.worker_process_timeout = cfg.get('worker_process_timeout', cls.worker_process_timeout)
         cls.flask_log_level = cfg.get('flask_log_level', cls.flask_log_level)
         cls.flask_debug_enable = cfg.get('flask_debug_enable', cls.flask_debug_enable)
         cls.queue_eval_seconds = cfg.get('queue_eval_seconds', cls.queue_eval_seconds)
         cls.port_number = cfg.get('port_number', cls.port_number)
         cls.enable_split_jobs = cfg.get('enable_split_jobs', cls.enable_split_jobs)
         cls.download_timeout_seconds = cfg.get('download_timeout_seconds', cls.download_timeout_seconds)
+
+    @classmethod
+    def config_dir(cls):
+        # Set up the config path
+        if current_system_os() == 'macos':
+            local_config_path = os.path.expanduser('~/Library/Application Support/Zordon')
+        elif current_system_os() == 'windows':
+            local_config_path = os.path.join(os.environ['APPDATA'], 'Zordon')
+        else:
+            local_config_path = os.path.expanduser('~/.config/Zordon')
+        return local_config_path
+
+    @classmethod
+    def setup_config_dir(cls):
+        # Set up the config path
+        local_config_dir = cls.config_dir()
+        if os.path.exists(local_config_dir):
+            return
+
+        try:
+            # Create the local configuration directory
+            os.makedirs(local_config_dir)
+
+            # Determine the template path
+            resource_environment_path = os.environ.get('RESOURCEPATH')
+            if resource_environment_path:
+                template_path = os.path.join(resource_environment_path, 'config')
+            else:
+                template_path = os.path.join(
+                    os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__)))), 'config')
+
+            # Copy contents from the template to the local configuration directory
+            copy_directory_contents(template_path, local_config_dir)
+
+        except Exception as e:
+            print(f"An error occurred while setting up the config directory: {e}")
+            raise

src/utilities/ffmpeg_helper.py

@@ -4,9 +4,10 @@ from src.engines.ffmpeg.ffmpeg_engine import FFMPEG
 
 def image_sequence_to_video(source_glob_pattern, output_path, framerate=24, encoder="prores_ks", profile=4,
                             start_frame=1):
-    subprocess.run([FFMPEG.default_renderer_path(), "-framerate", str(framerate), "-start_number", str(start_frame), "-i",
-                    f"{source_glob_pattern}", "-c:v", encoder, "-profile:v", str(profile), '-pix_fmt', 'yuva444p10le',
-                    output_path], stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL, check=True)
+    subprocess.run([FFMPEG.default_renderer_path(), "-framerate", str(framerate), "-start_number",
+                    str(start_frame), "-i", f"{source_glob_pattern}", "-c:v", encoder, "-profile:v", str(profile),
+                    '-pix_fmt', 'yuva444p10le', output_path], stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL,
+                   check=True)
 
 
 def save_first_frame(source_path, dest_path, max_width=1280):

src/utilities/misc_helper.py

@@ -1,7 +1,9 @@
 import logging
 import os
 import platform
+import shutil
 import socket
+import string
 import subprocess
 from datetime import datetime
 
@@ -9,14 +11,27 @@ logger = logging.getLogger()
 
 
 def launch_url(url):
-    if subprocess.run(['which', 'xdg-open'], capture_output=True).returncode == 0:
-        subprocess.run(['xdg-open', url])  # linux
-    elif subprocess.run(['which', 'open'], capture_output=True).returncode == 0:
-        subprocess.run(['open', url])  # macos
-    elif subprocess.run(['which', 'start'], capture_output=True).returncode == 0:
-        subprocess.run(['start', url])  # windows - need to validate this works
+    logger = logging.getLogger(__name__)
+
+    if shutil.which('xdg-open'):
+        opener = 'xdg-open'
+    elif shutil.which('open'):
+        opener = 'open'
+    elif shutil.which('cmd'):
+        opener = 'start'
     else:
-        logger.error(f"No valid launchers found to launch url: {url}")
+        error_message = f"No valid launchers found to launch URL: {url}"
+        logger.error(error_message)
+        raise OSError(error_message)
+
+    try:
+        if opener == 'start':
+            # For Windows, use 'cmd /c start'
+            subprocess.run(['cmd', '/c', 'start', url], shell=False)
+        else:
+            subprocess.run([opener, url])
+    except Exception as e:
+        logger.error(f"Failed to launch URL: {url}. Error: {e}")
 
 
 def file_exists_in_mounts(filepath):
@@ -34,9 +49,9 @@ def file_exists_in_mounts(filepath):
         path = os.path.normpath(path)
         components = []
         while True:
-            path, component = os.path.split(path)
-            if component:
-                components.append(component)
+            path, comp = os.path.split(path)
+            if comp:
+                components.append(comp)
             else:
                 if path:
                     components.append(path)
@@ -62,20 +77,17 @@ def file_exists_in_mounts(filepath):
 
 def get_time_elapsed(start_time=None, end_time=None):
 
-    from string import Template
-
-    class DeltaTemplate(Template):
-        delimiter = "%"
-
     def strfdelta(tdelta, fmt='%H:%M:%S'):
-        d = {"D": tdelta.days}
+        days = tdelta.days
         hours, rem = divmod(tdelta.seconds, 3600)
         minutes, seconds = divmod(rem, 60)
-        d["H"] = '{:02d}'.format(hours)
-        d["M"] = '{:02d}'.format(minutes)
-        d["S"] = '{:02d}'.format(seconds)
-        t = DeltaTemplate(fmt)
-        return t.substitute(**d)
+
+        # Using f-strings for formatting
+        formatted_str = fmt.replace('%D', f'{days}')
+        formatted_str = formatted_str.replace('%H', f'{hours:02d}')
+        formatted_str = formatted_str.replace('%M', f'{minutes:02d}')
+        formatted_str = formatted_str.replace('%S', f'{seconds:02d}')
+        return formatted_str
 
     # calculate elapsed time
     elapsed_time = None
@@ -93,7 +105,7 @@ def get_time_elapsed(start_time=None, end_time=None):
 def get_file_size_human(file_path):
     size_in_bytes = os.path.getsize(file_path)
 
-    # Convert size to a human readable format
+    # Convert size to a human-readable format
     if size_in_bytes < 1024:
         return f"{size_in_bytes} B"
     elif size_in_bytes < 1024 ** 2:
@@ -127,15 +139,24 @@ def current_system_cpu():
 
 
 def resources_dir():
-    resources_directory = os.path.join(os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__)))),
-                                       'resources')
-    return resources_directory
+    resource_environment_path = os.environ.get('RESOURCEPATH', None)
+    if resource_environment_path:  # running inside resource bundle
+        return os.path.join(resource_environment_path, 'resources')
+    else:
+        return os.path.join(os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__)))), 'resources')
 
 
-def config_dir():
-    config_directory = os.path.join(os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__)))),
-                                       'config')
-    return config_directory
+def copy_directory_contents(src_dir, dst_dir):
+    """
+    Copy the contents of the source directory (src_dir) to the destination directory (dst_dir).
+    """
+    for item in os.listdir(src_dir):
+        src_path = os.path.join(src_dir, item)
+        dst_path = os.path.join(dst_dir, item)
+        if os.path.isdir(src_path):
+            shutil.copytree(src_path, dst_path, dirs_exist_ok=True)
+        else:
+            shutil.copy2(src_path, dst_path)
 
 
 def is_localhost(comparison_hostname):
@@ -146,3 +167,19 @@ def is_localhost(comparison_hostname):
         return comparison_hostname == local_hostname
     except AttributeError:
         return False
+
+
+def num_to_alphanumeric(num):
+    # List of possible alphanumeric characters
+    characters = string.ascii_letters + string.digits
+
+    # Make sure number is positive
+    num = abs(num)
+
+    # Convert number to alphanumeric
+    result = ""
+    while num > 0:
+        num, remainder = divmod(num, len(characters))
+        result += characters[remainder]
+
+    return result[::-1]  # Reverse the result to get the correct alphanumeric string

src/utilities/zeroconf_server.py

@@ -2,7 +2,8 @@ import logging
 import socket
 
 from pubsub import pub
-from zeroconf import Zeroconf, ServiceInfo, ServiceBrowser, ServiceStateChange, NonUniqueNameException
+from zeroconf import Zeroconf, ServiceInfo, ServiceBrowser, ServiceStateChange, NonUniqueNameException, \
+    NotRunningException
 
 logger = logging.getLogger()
 
@@ -22,17 +23,23 @@ class ZeroconfServer:
         cls.service_type = service_type
         cls.server_name = server_name
         cls.server_port = server_port
+        try:  # Stop any previously running instances
+            socket.gethostbyname(socket.gethostname())
+        except socket.gaierror:
+            cls.stop()
 
     @classmethod
     def start(cls, listen_only=False):
         if not cls.service_type:
             raise RuntimeError("The 'configure' method must be run before starting the zeroconf server")
+        logger.debug("Starting zeroconf service")
         if not listen_only:
             cls._register_service()
         cls._browse_services()
 
     @classmethod
     def stop(cls):
+        logger.debug("Stopping zeroconf service")
         cls._unregister_service()
         cls.zeroconf.close()
 
@@ -52,7 +59,7 @@ class ZeroconfServer:
             cls.service_info = info
             cls.zeroconf.register_service(info)
             logger.info(f"Registered zeroconf service: {cls.service_info.name}")
-        except NonUniqueNameException as e:
+        except (NonUniqueNameException, socket.gaierror) as e:
             logger.error(f"Error establishing zeroconf: {e}")
 
     @classmethod
@@ -69,40 +76,49 @@ class ZeroconfServer:
 
     @classmethod
     def _on_service_discovered(cls, zeroconf, service_type, name, state_change):
-        info = zeroconf.get_service_info(service_type, name)
-        logger.debug(f"Zeroconf: {name} {state_change}")
-        if service_type == cls.service_type:
-            if state_change == ServiceStateChange.Added or state_change == ServiceStateChange.Updated:
-                cls.client_cache[name] = info
-            else:
-                cls.client_cache.pop(name)
-            pub.sendMessage('zeroconf_state_change', hostname=name, state_change=state_change, info=info)
+        try:
+            info = zeroconf.get_service_info(service_type, name)
+            hostname = name.split(f'.{cls.service_type}')[0]
+            logger.debug(f"Zeroconf: {hostname} {state_change}")
+            if service_type == cls.service_type:
+                if state_change == ServiceStateChange.Added or state_change == ServiceStateChange.Updated:
+                    cls.client_cache[hostname] = info
+                else:
+                    cls.client_cache.pop(hostname)
+                pub.sendMessage('zeroconf_state_change', hostname=hostname, state_change=state_change)
+        except NotRunningException:
+            pass
 
     @classmethod
     def found_hostnames(cls):
-        fetched_hostnames = [x.split(f'.{cls.service_type}')[0] for x in cls.client_cache.keys()]
         local_hostname = socket.gethostname()
-        # Define a sort key function
+
         def sort_key(hostname):
             # Return 0 if it's the local hostname so it comes first, else return 1
             return False if hostname == local_hostname else True
 
         # Sort the list with the local hostname first
-        sorted_hostnames = sorted(fetched_hostnames, key=sort_key)
+        sorted_hostnames = sorted(cls.client_cache.keys(), key=sort_key)
         return sorted_hostnames
 
     @classmethod
     def get_hostname_properties(cls, hostname):
-        new_key = hostname + '.' + cls.service_type
-        server_info = cls.client_cache.get(new_key).properties
+        server_info = cls.client_cache.get(hostname).properties
         decoded_server_info = {key.decode('utf-8'): value.decode('utf-8') for key, value in server_info.items()}
         return decoded_server_info
 
+
 # Example usage:
 if __name__ == "__main__":
+    import time
+
+    logging.basicConfig(level=logging.DEBUG)
     ZeroconfServer.configure("_zordon._tcp.local.", "foobar.local", 8080)
     try:
         ZeroconfServer.start()
-        input("Server running - Press enter to end")
+        while True:
+            time.sleep(0.1)
+    except KeyboardInterrupt:
+        pass
     finally:
         ZeroconfServer.stop()

src/web/static/js/job_table.js

@@ -1,64 +0,0 @@
-const grid = new gridjs.Grid({
-columns: [
-  { data: (row) => row.id,
-  name: 'Thumbnail',
-  formatter: (cell) => gridjs.html(`<img src="/api/job/${cell}/thumbnail?video_ok" style='width: 200px; min-width: 120px;'>`),
-  sort: {enabled: false}
-  },
-  { id: 'name',
-  name: 'Name',
-  data: (row) => row.name,
-  formatter: (name, row) => gridjs.html(`<a href="/ui/job/${row.cells[0].data}/full_details">${name}</a>`)
-   },
-  { id: 'renderer', data: (row) => `${row.renderer}-${row.renderer_version}`, name: 'Renderer' },
-  { id: 'priority', name: 'Priority' },
-  { id: 'status',
-    name: 'Status',
-    data: (row) => row,
-    formatter: (cell, row) => gridjs.html(`
-        <span class="tag ${(cell.status == 'running') ? 'is-hidden' : ''} ${(cell.status == 'cancelled') ?
-        'is-warning' : (cell.status == 'error') ? 'is-danger' : (cell.status == 'not_started') ?
-        'is-light' : 'is-primary'}">${cell.status}</span>
-        <progress class="progress is-primary ${(cell.status != 'running') ? 'is-hidden': ''}"
-        value="${(parseFloat(cell.percent_complete) * 100.0)}" max="100">${cell.status}</progress>
-    `)},
-  { id: 'time_elapsed', name: 'Time Elapsed' },
-  { data: (row) => row.total_frames ?? 'N/A', name: 'Frame Count' },
-  { id: 'client', name: 'Client'},
-  { data: (row) => row.last_output ?? 'N/A',
-    name: 'Last Output',
-    formatter: (output, row) => gridjs.html(`<a href="/api/job/${row.cells[0].data}/logs">${output}</a>`)
-  },
-  { data: (row) => row,
-    name: 'Commands',
-    formatter: (cell, row) => gridjs.html(`
-        <div class="field has-addons" style='white-space: nowrap; display: inline-block;'>
-            <button class="button is-info" onclick="window.location.href='/ui/job/${row.cells[0].data}/full_details';">
-            <span class="icon"><i class="fa-solid fa-info"></i></span>
-            </button>
-            <button class="button is-link" onclick="window.location.href='/api/job/${row.cells[0].data}/logs';">
-            <span class="icon"><i class="fa-regular fa-file-lines"></i></span>
-            </button>
-            <button class="button is-warning is-active ${(cell.status != 'running') ? 'is-hidden': ''}" onclick="window.location.href='/api/job/${row.cells[0].data}/cancel?confirm=True&redirect=True';">
-            <span class="icon"><i class="fa-solid fa-x"></i></span>
-            </button>
-            <button class="button is-success ${(cell.status != 'completed') ? 'is-hidden': ''}" onclick="window.location.href='/api/job/${row.cells[0].data}/download_all';">
-            <span class="icon"><i class="fa-solid fa-download"></i></span>
-            <span>${cell.file_count}</span>
-            </button>
-            <button class="button is-danger" onclick="window.location.href='/api/job/${row.cells[0].data}/delete?confirm=True&redirect=True'">
-            <span class="icon"><i class="fa-regular fa-trash-can"></i></span>
-            </button>
-        </div>
-        `),
-    sort: false
-  },
-  { id: 'owner', name: 'Owner' }
-],
-autoWidth: true,
-server: {
-  url: '/api/jobs',
-  then: results => results['jobs'],
-},
-sort: true,
-}).render(document.getElementById('table'));

src/web/static/js/modals.js

@@ -1,44 +0,0 @@
-document.addEventListener('DOMContentLoaded', () => {
-  // Functions to open and close a modal
-  function openModal($el) {
-    $el.classList.add('is-active');
-  }
-
-  function closeModal($el) {
-    $el.classList.remove('is-active');
-  }
-
-  function closeAllModals() {
-    (document.querySelectorAll('.modal') || []).forEach(($modal) => {
-      closeModal($modal);
-    });
-  }
-
-  // Add a click event on buttons to open a specific modal
-  (document.querySelectorAll('.js-modal-trigger') || []).forEach(($trigger) => {
-    const modal = $trigger.dataset.target;
-    const $target = document.getElementById(modal);
-
-    $trigger.addEventListener('click', () => {
-      openModal($target);
-    });
-  });
-
-  // Add a click event on various child elements to close the parent modal
-  (document.querySelectorAll('.modal-background, .modal-close, .modal-card-head .delete, .modal-card-foot .button') || []).forEach(($close) => {
-    const $target = $close.closest('.modal');
-
-    $close.addEventListener('click', () => {
-      closeModal($target);
-    });
-  });
-
-  // Add a keyboard event to close all modals
-  document.addEventListener('keydown', (event) => {
-    const e = event || window.event;
-
-    if (e.keyCode === 27) { // Escape key
-      closeAllModals();
-    }
-  });
-});

src/web/templates/details.html

@@ -1,48 +0,0 @@
-{% extends 'layout.html' %}
-
-{% block body %}
-<div class="container" style="text-align:center; width: 100%">
-<br>
-  {% if media_url: %}
-    <video width="1280" height="720" controls>
-    <source src="{{media_url}}" type="video/mp4">
-    Your browser does not support the video tag.
-    </video>
-  {% elif job_status == 'Running': %}
-    <div style="width: 100%; height: 720px; position: relative; background: black; text-align: center; color: white;">
-      <img src="/static/images/gears.png" style="vertical-align: middle; width: auto; height: auto; position:absolute; margin: auto; top: 0; bottom: 0; left: 0; right: 0;">
-        <span style="height: auto; position:absolute; margin: auto; top: 58%; left: 0; right: 0; color: white; width: 60%">
-          <progress class="progress is-primary" value="{{job.worker_data()['percent_complete'] * 100}}" max="100" style="margin-top: 6px;" id="progress-bar">Rendering</progress>
-          Rendering in Progress - <span id="percent-complete">{{(job.worker_data()['percent_complete'] * 100) | int}}%</span>
-          <br>Time Elapsed: <span id="time-elapsed">{{job.worker_data()['time_elapsed']}}</span>
-        </span>
-      <script>
-      var startingStatus = '{{job.status.value}}';
-      function update_job() {
-        $.getJSON('/api/job/{{job.id}}', function(data) {
-          document.getElementById('progress-bar').value = (data.percent_complete * 100);
-          document.getElementById('percent-complete').innerHTML = (data.percent_complete * 100).toFixed(0) + '%';
-          document.getElementById('time-elapsed').innerHTML = data.time_elapsed;
-          if (data.status != startingStatus){
-            clearInterval(renderingTimer);
-            window.location.reload(true);
-          };
-        });
-      }
-      if (startingStatus == 'running'){
-        var renderingTimer = setInterval(update_job, 1000);
-      };
-    </script>
-    </div>
-  {% else %}
-    <div style="width: 100%; height: 720px; position: relative; background: black;">
-      <img src="/static/images/{{job_status}}.png" style="vertical-align: middle; width: auto; height: auto; position:absolute; margin: auto; top: 0; bottom: 0; left: 0; right: 0;">
-      <span style="height: auto; position:absolute; margin: auto; top: 58%; left: 0; right: 0; color: white;">
-        {{job_status}}
-      </span>
-    </div>
-  {% endif %}
-  <br>
-  {{detail_table|safe}}
-</div>
-{% endblock %}

src/web/templates/index.html

@@ -1,8 +0,0 @@
-{% extends 'layout.html' %}
-
-{% block body %}
-<div class="container is-fluid" style="padding-top: 20px;">
-  <div id="table" class="table"></div>
-</div>
-<script src="/static/js/job_table.js"></script>
-{% endblock %}

src/web/templates/layout.html

@@ -1,236 +0,0 @@
-<!DOCTYPE html>
-<html>
-<head>
-  <meta charset="utf-8">
-  <meta name="viewport" content="width=device-width, initial-scale=1">
-  <title>Zordon Dashboard</title>
-  <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bulma@0.9.4/css/bulma.min.css">
-  <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
-  <script src="https://cdn.jsdelivr.net/npm/jquery/dist/jquery.min.js"></script>
-  <script src="https://cdn.jsdelivr.net/npm/gridjs/dist/gridjs.umd.js"></script>
-  <link href="https://unpkg.com/gridjs/dist/theme/mermaid.min.css" rel="stylesheet" />
-  <script src="https://kit.fontawesome.com/698705d14d.js" crossorigin="anonymous"></script>
-  <script type="text/javascript" src="/static/js/modals.js"></script>
-</head>
-<body onload="rendererChanged(document.getElementById('renderer'))">
-
-<nav class="navbar is-dark" role="navigation" aria-label="main navigation">
-  <div class="navbar-brand">
-    <a class="navbar-item" href="/">
-      <img src="/static/images/logo.png">
-    </a>
-  </div>
-
-  <div id="navbarBasicExample" class="navbar-menu">
-    <div class="navbar-start">
-      <a class="navbar-item" href="/">
-        Home
-      </a>
-    </div>
-
-    <div class="navbar-end">
-      <div class="navbar-item">
-        <button class="button is-primary js-modal-trigger" data-target="add-job-modal">
-          <span class="icon">
-            <i class="fa-solid fa-upload"></i>
-          </span>
-        <span>Submit Job</span>
-        </button>
-      </div>
-    </div>
-  </div>
-</nav>
-
-{% block body %}
-{% endblock %}
-
-<div id="add-job-modal" class="modal">
-  <!--   Start Add Form   -->
-  <form id="submit_job" action="/api/add_job?redirect=True" method="POST" enctype="multipart/form-data">
-    <div class="modal-background"></div>
-    <div class="modal-card">
-      <header class="modal-card-head">
-        <p class="modal-card-title">Submit New Job</p>
-        <button class="delete" aria-label="close" type="button"></button>
-      </header>
-      <section class="modal-card-body">
-        <!--   File Uploader   -->
-
-        <label class="label">Upload File</label>
-        <div id="file-uploader" class="file has-name is-fullwidth">
-          <label class="file-label">
-            <input class="file-input is-small" type="file" name="file">
-            <span class="file-cta">
-            <span class="file-icon">
-              <i class="fas fa-upload"></i>
-            </span>
-            <span class="file-label">
-              Choose a file…
-            </span>
-          </span>
-            <span class="file-name">
-            No File Uploaded
-          </span>
-          </label>
-        </div>
-        <br>
-        <script>
-    const fileInput = document.querySelector('#file-uploader input[type=file]');
-    fileInput.onchange = () => {
-      if (fileInput.files.length > 0) {
-        const fileName = document.querySelector('#file-uploader .file-name');
-        fileName.textContent = fileInput.files[0].name;
-      }
-    }
-
-    const presets = {
-      {% for preset in preset_list: %}
-        {{preset}}: {
-        name: '{{preset_list[preset]['name']}}',
-        renderer: '{{preset_list[preset]['renderer']}}',
-        args: '{{preset_list[preset]['args']}}',
-        },
-      {% endfor %}
-    };
-
-    function rendererChanged(ddl1) {
-
-        var renderers = {
-        {% for renderer in renderer_info: %}
-          {% if renderer_info[renderer]['supported_export_formats']: %}
-          {{renderer}}: [
-            {% for format in renderer_info[renderer]['supported_export_formats']: %}
-            '{{format}}',
-            {% endfor %}
-            ],
-            {% endif %}
-        {% endfor %}
-        };
-
-        var selectedRenderer = ddl1.value;
-
-        var ddl3 = document.getElementById('preset_list');
-        ddl3.options.length = 0;
-        createOption(ddl3, '-Presets-', '');
-        for (var preset_name in presets) {
-          if (presets[preset_name]['renderer'] == selectedRenderer) {
-            createOption(ddl3, presets[preset_name]['name'], preset_name);
-           };
-        };
-        document.getElementById('raw_args').value = "";
-
-        var ddl2 = document.getElementById('export_format');
-        ddl2.options.length = 0;
-        var options = renderers[selectedRenderer];
-        for (i = 0; i < options.length; i++) {
-          createOption(ddl2, options[i], options[i]);
-        };
-      }
-
-      function createOption(ddl, text, value) {
-        var opt = document.createElement('option');
-        opt.value = value;
-        opt.text = text;
-        ddl.options.add(opt);
-      }
-
-      function addPresetTextToInput(presetfield, textfield) {
-        var p = presets[presetfield.value];
-        textfield.value = p['args'];
-      }
-
-      </script>
-
-        <!--   Renderer & Priority   -->
-        <div class="field is-grouped">
-          <p class="control">
-            <label class="label">Renderer</label>
-            <span class="select">
-              <select id="renderer" name="renderer" onchange="rendererChanged(this)">
-                {% for renderer in renderer_info: %}
-                <option name="renderer" value="{{renderer}}">{{renderer}}</option>
-                {% endfor %}
-              </select>
-            </span>
-          </p>
-          <p class="control">
-            <label class="label">Client</label>
-            <span class="select">
-              <select name="client">
-                <option name="client" value="">First Available</option>
-                  {% for client in render_clients: %}
-                <option name="client" value="{{client}}">{{client}}</option>
-                  {% endfor %}
-              </select>
-            </span>
-          </p>
-          <p class="control">
-            <label class="label">Priority</label>
-            <span class="select">
-              <select name="priority">
-              <option name="priority" value="1">1</option>
-              <option name="priority" value="2" selected="selected">2</option>
-              <option name="priority" value="3">3</option>
-              </select>
-            </span>
-          </p>
-        </div>
-
-        <!--   Output Path   -->
-        <label class="label">Output</label>
-        <div class="field has-addons">
-          <div class="control is-expanded">
-            <input class="input is-small" type="text" placeholder="Output Name" name="output_path" value="output.mp4">
-          </div>
-          <p class="control">
-        <span class="select is-small">
-          <select id="export_format" name="export_format">
-            <option value="ar">option</option>
-          </select>
-        </span>
-          </p>
-        </div>
-
-        <!--   Resolution     -->
-<!--        <label class="label">Resolution</label>-->
-<!--        <div class="field is-grouped">-->
-<!--          <p class="control">-->
-<!--            <input class="input" type="text" placeholder="auto" maxlength="5" size="8" name="AnyRenderer-arg_x_resolution">-->
-<!--          </p>-->
-<!--          <label class="label"> x </label>-->
-<!--          <p class="control">-->
-<!--            <input class="input" type="text" placeholder="auto" maxlength="5" size="8" name="AnyRenderer-arg_y_resolution">-->
-<!--          </p>-->
-<!--          <label class="label"> @ </label>-->
-<!--          <p class="control">-->
-<!--            <input class="input" type="text" placeholder="auto" maxlength="3" size="5" name="AnyRenderer-arg_frame_rate">-->
-<!--          </p>-->
-<!--          <label class="label"> fps </label>-->
-<!--        </div>-->
-
-        <label class="label">Command Line Arguments</label>
-        <div class="field has-addons">
-          <p class="control">
-            <span class="select is-small">
-              <select id="preset_list" onchange="addPresetTextToInput(this, document.getElementById('raw_args'))">
-                <option value="preset-placeholder">presets</option>
-              </select>
-            </span>
-          </p>
-          <p class="control is-expanded">
-            <input class="input is-small" type="text" placeholder="Args" id="raw_args" name="raw_args">
-          </p>
-        </div>
-
-        <!--   End Add Form   -->
-      </section>
-      <footer class="modal-card-foot">
-        <input class="button is-link" type="submit"/>
-        <button class="button" type="button">Cancel</button>
-      </footer>
-    </div>
-  </form>
-</div>
-
-</body>
-</html>

src/web/templates/upload.html

@@ -1,62 +0,0 @@
-<html>
-<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
-<script>
-    $(function() {
-  $('#renderer').change(function() {
-    $('.render_settings').hide();
-    $('#' + $(this).val()).show();
-  });
-});
-
-
-</script>
-<body>
-<h3>Upload a file</h3>
-
-<div>
-    <form action="/add_job" method="POST"
-          enctype="multipart/form-data">
-        <div>
-            <input type="file" name="file"/><br>
-        </div>
-
-        <input type="hidden" id="origin" name="origin" value="html">
-
-        <div id="client">
-            Render Client:
-            <select name="client">
-                {% for client in render_clients %}
-                <option value="{{client}}">{{client}}</option>
-                {% endfor %}
-            </select>
-        </div>
-        <div id="priority">
-            Priority:
-            <select name="priority">
-                <option value="1">1</option>
-                <option value="2" selected>2</option>
-                <option value="3">3</option>
-            </select>
-        </div>
-        <div>
-            <label for="renderer">Renderer:</label>
-            <select id="renderer" name="renderer">
-                {% for renderer in supported_renderers %}
-                <option value="{{renderer}}">{{renderer}}</option>
-                {% endfor %}
-            </select>
-        </div>
-        <div id="blender" class="render_settings" style="display:none">
-            Engine:
-            <select name="blender+engine">
-                <option value="CYCLES">Cycles</option>
-                <option value="BLENDER_EEVEE">Eevee</option>
-            </select>
-        </div>
-        <br>
-
-        <input type="submit"/>
-    </form>
-</div>
-</body>
-</html>