5de514f1f8
Introduces a new threading backend for oslo.service that provides a complete alternative to the eventlet-based backend. This backend includes: • A ThreadGroup and Thread implementation using the Python threading module. • A reimplementation of all looping call utilities ( FixedIntervalLoopingCall, DynamicLoopingCall, etc.) using threading.Event and futurist.ThreadPoolExecutor. • A service management layer based on cotyledon, including Service,ServiceWrapper, Launcher, and ProcessLauncher. • A new ThreadingBackend class that exposes all components needed for integration into oslo.service. This change provides a robust and eventlet-free alternative backend while maintaining API compatibility. Change-Id: Ia7518401ccdcc28afbffd4ffe5c3b772f3617001
34 lines
1.0 KiB
Python
34 lines
1.0 KiB
Python
# Copyright (C) 2025 Red Hat, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import errno
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import io
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import os
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import signal
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import sys
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def is_daemon():
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try:
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return os.getpgrp() != os.tcgetpgrp(sys.stdout.fileno())
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except io.UnsupportedOperation:
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return True
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except OSError as err:
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return err.errno == errno.ENOTTY or False
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def is_sighup_and_daemon(signo, signal_handler):
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return (signal_handler.is_signal_supported('SIGHUP') and
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signo == signal.SIGHUP and is_daemon())
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