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2639215aa3
Add support for SIGTTIN and SIGTTOU signals to the dirty arbiter, allowing dynamic scaling of dirty workers at runtime without restarting gunicorn. Changes: - Add TTIN/TTOU to DirtyArbiter.SIGNALS - Add num_workers instance variable for dynamic count - Add _get_minimum_workers() to enforce app worker constraints - Add signal handlers for TTIN (increase) and TTOU (decrease) - Update manage_workers() to use dynamic count - Add documentation for dynamic scaling - Add unit tests for signal handling - Add Docker integration tests The minimum worker constraint ensures TTOU cannot reduce workers below what apps require (e.g., if an app has workers=3, minimum is 3). Closes #3489
72 lines
2.0 KiB
Python
72 lines
2.0 KiB
Python
#
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# This file is part of gunicorn released under the MIT license.
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# See the NOTICE for more information.
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"""Test app with multiple dirty tasks for TTIN/TTOU testing."""
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import json
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import time
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from gunicorn.dirty import DirtyApp, get_dirty_client
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# Unlimited workers - runs on all dirty workers
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class UnlimitedTask(DirtyApp):
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"""Task that runs on all dirty workers."""
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def setup(self):
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pass
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def process(self, data):
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return {"task": "unlimited", "data": data}
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# Limited to 2 workers
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class LimitedTask(DirtyApp):
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"""Task limited to 2 workers."""
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workers = 2
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def setup(self):
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pass
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def process(self, data):
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delay = data.get("delay", 0)
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if delay:
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time.sleep(delay)
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return {"task": "limited", "data": data}
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def app(environ, start_response):
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"""Simple WSGI app for testing."""
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path = environ.get('PATH_INFO', '/')
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if path == '/health':
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start_response('200 OK', [('Content-Type', 'text/plain')])
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return [b'OK']
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if path == '/unlimited':
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try:
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client = get_dirty_client()
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result = client.execute('app:UnlimitedTask', {'test': 'data'})
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start_response('200 OK', [('Content-Type', 'application/json')])
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return [json.dumps(result).encode()]
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except Exception as e:
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start_response('500 Internal Server Error',
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[('Content-Type', 'text/plain')])
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return [str(e).encode()]
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if path == '/limited':
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try:
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client = get_dirty_client()
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result = client.execute('app:LimitedTask', {'test': 'data'})
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start_response('200 OK', [('Content-Type', 'application/json')])
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return [json.dumps(result).encode()]
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except Exception as e:
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start_response('500 Internal Server Error',
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[('Content-Type', 'text/plain')])
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return [str(e).encode()]
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start_response('404 Not Found', [('Content-Type', 'text/plain')])
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return [b'Not Found']
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