Joshua M. Boniface
a2e5df9f6d
Modifies pvcapid to run under Gunicorn when in non-debug mode, instead of the Flask development server. This is proper practice for one, and also helps increase performance slightly in some workloads (file uploads mainly).
152 lines
5.0 KiB
Python
Executable File
152 lines
5.0 KiB
Python
Executable File
#!/usr/bin/env python3
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# Daemon.py - PVC HTTP API daemon
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# Part of the Parallel Virtual Cluster (PVC) system
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#
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# Copyright (C) 2018-2024 Joshua M. Boniface <joshua@boniface.me>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, version 3.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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#
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###############################################################################
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import sys
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import os
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import subprocess
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from ssl import SSLContext, TLSVersion
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from distutils.util import strtobool as dustrtobool
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import daemon_lib.config as cfg
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# Daemon version
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version = "0.9.100~git-73c0834f"
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# API version
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API_VERSION = 1.0
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##########################################################
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# Helper Functions
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##########################################################
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def strtobool(stringv):
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if stringv is None:
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return False
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if isinstance(stringv, bool):
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return bool(stringv)
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try:
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return bool(dustrtobool(stringv))
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except Exception:
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return False
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##########################################################
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# Configuration Parsing
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##########################################################
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# Get our configuration
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config = cfg.get_configuration()
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config["daemon_name"] = "pvcapid"
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config["daemon_version"] = version
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##########################################################
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# Flask App Creation for Gunicorn
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##########################################################
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def create_app():
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"""
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Create and return the Flask app and SSL context if necessary.
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"""
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# Import the Flask app from pvcapid.flaskapi after adjusting the path
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import pvcapid.flaskapi as pvc_api
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# Print our startup messages
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print("")
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print("|--------------------------------------------------------------|")
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print("| |")
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print("| ███████████ ▜█▙ ▟█▛ █████ █ █ █ |")
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print("| ██ ▜█▙ ▟█▛ ██ |")
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print("| ███████████ ▜█▙ ▟█▛ ██ |")
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print("| ██ ▜█▙▟█▛ ███████████ |")
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print("| |")
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print("|--------------------------------------------------------------|")
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print("| Parallel Virtual Cluster API daemon v{0: <23} |".format(version))
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print("| Debug: {0: <53} |".format(str(config["debug"])))
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print("| API version: v{0: <46} |".format(API_VERSION))
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print(
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"| Listen: {0: <52} |".format(
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"{}:{}".format(config["api_listen_address"], config["api_listen_port"])
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)
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)
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print("| SSL: {0: <55} |".format(str(config["api_ssl_enabled"])))
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print("| Authentication: {0: <44} |".format(str(config["api_auth_enabled"])))
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print("|--------------------------------------------------------------|")
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print("")
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pvc_api.celery_startup()
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return pvc_api.app
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##########################################################
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# Entrypoint
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##########################################################
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def entrypoint():
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if config['debug']:
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app = create_app()
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if config["api_ssl_enabled"]:
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ssl_context = SSLContext()
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ssl_context.minimum_version = TLSVersion.TLSv1
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ssl_context.get_ca_certs()
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ssl_context.load_cert_chain(
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config["api_ssl_cert_file"], keyfile=config["api_ssl_key_file"]
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)
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else:
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ssl_context = None
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app.run(
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config["api_listen_address"],
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config["api_listen_port"],
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threaded=True,
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ssl_context=ssl_context,
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)
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else:
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# Build the command to run Gunicorn
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gunicorn_cmd = [
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'gunicorn',
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'--workers', '1',
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'--threads', '8',
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'--timeout', '86400',
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'--bind', '{}:{}'.format(config["api_listen_address"], config["api_listen_port"]),
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'pvcapid.Daemon:create_app()',
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'--log-level', 'info',
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'--access-logfile', '-',
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'--error-logfile', '-',
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]
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if config["api_ssl_enabled"]:
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gunicorn_cmd += [
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'--certfile', config["api_ssl_cert_file"],
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'--keyfile', config["api_ssl_key_file"]
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]
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# Run Gunicorn
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try:
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subprocess.run(gunicorn_cmd)
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except KeyboardInterrupt:
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exit(0)
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except Exception as e:
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print(e)
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exit(1)
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