108 lines
3.3 KiB
Python
108 lines
3.3 KiB
Python
#!/usr/bin/env python
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# Copyright 2016 OpenMarket Ltd
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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 logging
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import os
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import subprocess
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logger = logging.getLogger(__name__)
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def get_version_string(module):
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"""Given a module calculate a git-aware version string for it.
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If called on a module not in a git checkout will return `__verison__`.
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Args:
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module (module)
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Returns:
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str
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"""
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cached_version = getattr(module, "_synapse_version_string_cache", None)
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if cached_version:
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return cached_version
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version_string = module.__version__
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try:
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null = open(os.devnull, "w")
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cwd = os.path.dirname(os.path.abspath(module.__file__))
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try:
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git_branch = (
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subprocess.check_output(
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["git", "rev-parse", "--abbrev-ref", "HEAD"], stderr=null, cwd=cwd
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)
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.strip()
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.decode("ascii")
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)
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git_branch = "b=" + git_branch
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except (subprocess.CalledProcessError, FileNotFoundError):
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# FileNotFoundError can arise when git is not installed
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git_branch = ""
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try:
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git_tag = (
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subprocess.check_output(
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["git", "describe", "--exact-match"], stderr=null, cwd=cwd
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)
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.strip()
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.decode("ascii")
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)
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git_tag = "t=" + git_tag
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except (subprocess.CalledProcessError, FileNotFoundError):
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git_tag = ""
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try:
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git_commit = (
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subprocess.check_output(
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["git", "rev-parse", "--short", "HEAD"], stderr=null, cwd=cwd
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)
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.strip()
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.decode("ascii")
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)
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except (subprocess.CalledProcessError, FileNotFoundError):
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git_commit = ""
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try:
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dirty_string = "-this_is_a_dirty_checkout"
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is_dirty = (
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subprocess.check_output(
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["git", "describe", "--dirty=" + dirty_string], stderr=null, cwd=cwd
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)
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.strip()
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.decode("ascii")
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.endswith(dirty_string)
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)
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git_dirty = "dirty" if is_dirty else ""
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except (subprocess.CalledProcessError, FileNotFoundError):
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git_dirty = ""
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if git_branch or git_tag or git_commit or git_dirty:
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git_version = ",".join(
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s for s in (git_branch, git_tag, git_commit, git_dirty) if s
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)
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version_string = "%s (%s)" % (module.__version__, git_version)
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except Exception as e:
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logger.info("Failed to check for git repository: %s", e)
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module._synapse_version_string_cache = version_string
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return version_string
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