mirror of
https://gerrit.googlesource.com/git-repo
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Format codebase with black and check formatting in CQ
Apply rules set by https://gerrit-review.googlesource.com/c/git-repo/+/362954/ across the codebase and fix any lingering errors caught by flake8. Also check black formatting in run_tests (and CQ). Bug: b/267675342 Change-Id: I972d77649dac351150dcfeb1cd1ad0ea2efc1956 Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/363474 Reviewed-by: Mike Frysinger <vapier@google.com> Tested-by: Gavin Mak <gavinmak@google.com> Commit-Queue: Gavin Mak <gavinmak@google.com>
This commit is contained in:
Gavin Mak
LUCI
@ -41,291 +41,330 @@ from git_command import GitCommand, RepoSourceVersion
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class EventLog(object):
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"""Event log that records events that occurred during a repo invocation.
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"""Event log that records events that occurred during a repo invocation.
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Events are written to the log as a consecutive JSON entries, one per line.
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Entries follow the git trace2 EVENT format.
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Events are written to the log as a consecutive JSON entries, one per line.
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Entries follow the git trace2 EVENT format.
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Each entry contains the following common keys:
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- event: The event name
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- sid: session-id - Unique string to allow process instance to be identified.
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- thread: The thread name.
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- time: is the UTC time of the event.
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Each entry contains the following common keys:
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- event: The event name
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- sid: session-id - Unique string to allow process instance to be
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identified.
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- thread: The thread name.
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- time: is the UTC time of the event.
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Valid 'event' names and event specific fields are documented here:
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https://git-scm.com/docs/api-trace2#_event_format
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"""
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def __init__(self, env=None):
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"""Initializes the event log."""
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self._log = []
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# Try to get session-id (sid) from environment (setup in repo launcher).
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KEY = 'GIT_TRACE2_PARENT_SID'
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if env is None:
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env = os.environ
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now = datetime.datetime.utcnow()
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# Save both our sid component and the complete sid.
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# We use our sid component (self._sid) as the unique filename prefix and
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# the full sid (self._full_sid) in the log itself.
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self._sid = 'repo-%s-P%08x' % (now.strftime('%Y%m%dT%H%M%SZ'), os.getpid())
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parent_sid = env.get(KEY)
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# Append our sid component to the parent sid (if it exists).
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if parent_sid is not None:
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self._full_sid = parent_sid + '/' + self._sid
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else:
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self._full_sid = self._sid
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# Set/update the environment variable.
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# Environment handling across systems is messy.
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try:
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env[KEY] = self._full_sid
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except UnicodeEncodeError:
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env[KEY] = self._full_sid.encode()
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# Add a version event to front of the log.
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self._AddVersionEvent()
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@property
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def full_sid(self):
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return self._full_sid
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def _AddVersionEvent(self):
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"""Adds a 'version' event at the beginning of current log."""
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version_event = self._CreateEventDict('version')
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version_event['evt'] = "2"
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version_event['exe'] = RepoSourceVersion()
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self._log.insert(0, version_event)
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def _CreateEventDict(self, event_name):
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"""Returns a dictionary with the common keys/values for git trace2 events.
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Args:
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event_name: The event name.
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Returns:
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Dictionary with the common event fields populated.
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"""
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return {
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'event': event_name,
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'sid': self._full_sid,
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'thread': threading.current_thread().name,
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'time': datetime.datetime.utcnow().isoformat() + 'Z',
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}
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def StartEvent(self):
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"""Append a 'start' event to the current log."""
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start_event = self._CreateEventDict('start')
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start_event['argv'] = sys.argv
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self._log.append(start_event)
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def ExitEvent(self, result):
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"""Append an 'exit' event to the current log.
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Args:
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result: Exit code of the event
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"""
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exit_event = self._CreateEventDict('exit')
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# Consider 'None' success (consistent with event_log result handling).
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if result is None:
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result = 0
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exit_event['code'] = result
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self._log.append(exit_event)
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def CommandEvent(self, name, subcommands):
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"""Append a 'command' event to the current log.
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Args:
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name: Name of the primary command (ex: repo, git)
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subcommands: List of the sub-commands (ex: version, init, sync)
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"""
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command_event = self._CreateEventDict('command')
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command_event['name'] = name
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command_event['subcommands'] = subcommands
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self._log.append(command_event)
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def LogConfigEvents(self, config, event_dict_name):
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"""Append a |event_dict_name| event for each config key in |config|.
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Args:
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config: Configuration dictionary.
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event_dict_name: Name of the event dictionary for items to be logged under.
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"""
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for param, value in config.items():
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event = self._CreateEventDict(event_dict_name)
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event['param'] = param
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event['value'] = value
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self._log.append(event)
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def DefParamRepoEvents(self, config):
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"""Append a 'def_param' event for each repo.* config key to the current log.
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Args:
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config: Repo configuration dictionary
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"""
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# Only output the repo.* config parameters.
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repo_config = {k: v for k, v in config.items() if k.startswith('repo.')}
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self.LogConfigEvents(repo_config, 'def_param')
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def GetDataEventName(self, value):
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"""Returns 'data-json' if the value is an array else returns 'data'."""
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return 'data-json' if value[0] == '[' and value[-1] == ']' else 'data'
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def LogDataConfigEvents(self, config, prefix):
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"""Append a 'data' event for each config key/value in |config| to the current log.
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For each keyX and valueX of the config, "key" field of the event is '|prefix|/keyX'
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and the "value" of the "key" field is valueX.
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Args:
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config: Configuration dictionary.
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prefix: Prefix for each key that is logged.
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"""
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for key, value in config.items():
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event = self._CreateEventDict(self.GetDataEventName(value))
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event['key'] = f'{prefix}/{key}'
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event['value'] = value
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self._log.append(event)
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def ErrorEvent(self, msg, fmt):
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"""Append a 'error' event to the current log."""
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error_event = self._CreateEventDict('error')
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error_event['msg'] = msg
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error_event['fmt'] = fmt
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self._log.append(error_event)
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def _GetEventTargetPath(self):
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"""Get the 'trace2.eventtarget' path from git configuration.
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Returns:
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path: git config's 'trace2.eventtarget' path if it exists, or None
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"""
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path = None
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cmd = ['config', '--get', 'trace2.eventtarget']
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# TODO(https://crbug.com/gerrit/13706): Use GitConfig when it supports
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# system git config variables.
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p = GitCommand(None, cmd, capture_stdout=True, capture_stderr=True,
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bare=True)
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retval = p.Wait()
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if retval == 0:
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# Strip trailing carriage-return in path.
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path = p.stdout.rstrip('\n')
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elif retval != 1:
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# `git config --get` is documented to produce an exit status of `1` if
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# the requested variable is not present in the configuration. Report any
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# other return value as an error.
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print("repo: error: 'git config --get' call failed with return code: %r, stderr: %r" % (
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retval, p.stderr), file=sys.stderr)
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return path
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def _WriteLog(self, write_fn):
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"""Writes the log out using a provided writer function.
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Generate compact JSON output for each item in the log, and write it using
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write_fn.
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Args:
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write_fn: A function that accepts byts and writes them to a destination.
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Valid 'event' names and event specific fields are documented here:
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https://git-scm.com/docs/api-trace2#_event_format
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"""
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for e in self._log:
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# Dump in compact encoding mode.
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# See 'Compact encoding' in Python docs:
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# https://docs.python.org/3/library/json.html#module-json
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write_fn(json.dumps(e, indent=None, separators=(',', ':')).encode('utf-8') + b'\n')
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def __init__(self, env=None):
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"""Initializes the event log."""
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self._log = []
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# Try to get session-id (sid) from environment (setup in repo launcher).
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KEY = "GIT_TRACE2_PARENT_SID"
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if env is None:
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env = os.environ
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def Write(self, path=None):
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"""Writes the log out to a file or socket.
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now = datetime.datetime.utcnow()
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Log is only written if 'path' or 'git config --get trace2.eventtarget'
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provide a valid path (or socket) to write logs to.
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# Save both our sid component and the complete sid.
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# We use our sid component (self._sid) as the unique filename prefix and
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# the full sid (self._full_sid) in the log itself.
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self._sid = "repo-%s-P%08x" % (
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now.strftime("%Y%m%dT%H%M%SZ"),
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os.getpid(),
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)
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parent_sid = env.get(KEY)
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# Append our sid component to the parent sid (if it exists).
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if parent_sid is not None:
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self._full_sid = parent_sid + "/" + self._sid
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else:
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self._full_sid = self._sid
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Logging filename format follows the git trace2 style of being a unique
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(exclusive writable) file.
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Args:
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path: Path to where logs should be written. The path may have a prefix of
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the form "af_unix:[{stream|dgram}:]", in which case the path is
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treated as a Unix domain socket. See
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https://git-scm.com/docs/api-trace2#_enabling_a_target for details.
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Returns:
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log_path: Path to the log file or socket if log is written, otherwise None
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"""
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log_path = None
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# If no logging path is specified, get the path from 'trace2.eventtarget'.
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if path is None:
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path = self._GetEventTargetPath()
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# If no logging path is specified, exit.
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if path is None:
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return None
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path_is_socket = False
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socket_type = None
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if isinstance(path, str):
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parts = path.split(':', 1)
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if parts[0] == 'af_unix' and len(parts) == 2:
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path_is_socket = True
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path = parts[1]
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parts = path.split(':', 1)
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if parts[0] == 'stream' and len(parts) == 2:
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socket_type = socket.SOCK_STREAM
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path = parts[1]
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elif parts[0] == 'dgram' and len(parts) == 2:
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socket_type = socket.SOCK_DGRAM
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path = parts[1]
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else:
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# Get absolute path.
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path = os.path.abspath(os.path.expanduser(path))
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else:
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raise TypeError('path: str required but got %s.' % type(path))
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# Git trace2 requires a directory to write log to.
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# TODO(https://crbug.com/gerrit/13706): Support file (append) mode also.
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if not (path_is_socket or os.path.isdir(path)):
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return None
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if path_is_socket:
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if socket_type == socket.SOCK_STREAM or socket_type is None:
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# Set/update the environment variable.
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# Environment handling across systems is messy.
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try:
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with socket.socket(socket.AF_UNIX, socket.SOCK_STREAM) as sock:
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sock.connect(path)
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self._WriteLog(sock.sendall)
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return f'af_unix:stream:{path}'
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except OSError as err:
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# If we tried to connect to a DGRAM socket using STREAM, ignore the
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# attempt and continue to DGRAM below. Otherwise, issue a warning.
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if err.errno != errno.EPROTOTYPE:
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print(f'repo: warning: git trace2 logging failed: {err}', file=sys.stderr)
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env[KEY] = self._full_sid
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except UnicodeEncodeError:
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env[KEY] = self._full_sid.encode()
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# Add a version event to front of the log.
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self._AddVersionEvent()
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@property
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def full_sid(self):
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return self._full_sid
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def _AddVersionEvent(self):
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"""Adds a 'version' event at the beginning of current log."""
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version_event = self._CreateEventDict("version")
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version_event["evt"] = "2"
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version_event["exe"] = RepoSourceVersion()
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self._log.insert(0, version_event)
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def _CreateEventDict(self, event_name):
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"""Returns a dictionary with common keys/values for git trace2 events.
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Args:
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event_name: The event name.
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Returns:
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Dictionary with the common event fields populated.
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"""
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return {
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"event": event_name,
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"sid": self._full_sid,
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"thread": threading.current_thread().name,
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"time": datetime.datetime.utcnow().isoformat() + "Z",
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}
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def StartEvent(self):
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"""Append a 'start' event to the current log."""
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start_event = self._CreateEventDict("start")
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start_event["argv"] = sys.argv
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self._log.append(start_event)
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def ExitEvent(self, result):
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"""Append an 'exit' event to the current log.
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Args:
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result: Exit code of the event
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"""
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exit_event = self._CreateEventDict("exit")
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# Consider 'None' success (consistent with event_log result handling).
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if result is None:
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result = 0
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exit_event["code"] = result
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self._log.append(exit_event)
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def CommandEvent(self, name, subcommands):
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"""Append a 'command' event to the current log.
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Args:
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name: Name of the primary command (ex: repo, git)
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subcommands: List of the sub-commands (ex: version, init, sync)
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"""
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command_event = self._CreateEventDict("command")
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command_event["name"] = name
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command_event["subcommands"] = subcommands
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self._log.append(command_event)
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def LogConfigEvents(self, config, event_dict_name):
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"""Append a |event_dict_name| event for each config key in |config|.
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Args:
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config: Configuration dictionary.
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event_dict_name: Name of the event dictionary for items to be logged
|
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under.
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"""
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for param, value in config.items():
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event = self._CreateEventDict(event_dict_name)
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event["param"] = param
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event["value"] = value
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self._log.append(event)
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def DefParamRepoEvents(self, config):
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"""Append 'def_param' events for repo config keys to the current log.
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This appends one event for each repo.* config key.
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|
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Args:
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config: Repo configuration dictionary
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"""
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# Only output the repo.* config parameters.
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repo_config = {k: v for k, v in config.items() if k.startswith("repo.")}
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self.LogConfigEvents(repo_config, "def_param")
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def GetDataEventName(self, value):
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"""Returns 'data-json' if the value is an array else returns 'data'."""
|
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return "data-json" if value[0] == "[" and value[-1] == "]" else "data"
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def LogDataConfigEvents(self, config, prefix):
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"""Append a 'data' event for each entry in |config| to the current log.
|
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|
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For each keyX and valueX of the config, "key" field of the event is
|
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'|prefix|/keyX' and the "value" of the "key" field is valueX.
|
||||
|
||||
Args:
|
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config: Configuration dictionary.
|
||||
prefix: Prefix for each key that is logged.
|
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"""
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for key, value in config.items():
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event = self._CreateEventDict(self.GetDataEventName(value))
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event["key"] = f"{prefix}/{key}"
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event["value"] = value
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self._log.append(event)
|
||||
|
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def ErrorEvent(self, msg, fmt):
|
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"""Append a 'error' event to the current log."""
|
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error_event = self._CreateEventDict("error")
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error_event["msg"] = msg
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error_event["fmt"] = fmt
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self._log.append(error_event)
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||||
|
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def _GetEventTargetPath(self):
|
||||
"""Get the 'trace2.eventtarget' path from git configuration.
|
||||
|
||||
Returns:
|
||||
path: git config's 'trace2.eventtarget' path if it exists, or None
|
||||
"""
|
||||
path = None
|
||||
cmd = ["config", "--get", "trace2.eventtarget"]
|
||||
# TODO(https://crbug.com/gerrit/13706): Use GitConfig when it supports
|
||||
# system git config variables.
|
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p = GitCommand(
|
||||
None, cmd, capture_stdout=True, capture_stderr=True, bare=True
|
||||
)
|
||||
retval = p.Wait()
|
||||
if retval == 0:
|
||||
# Strip trailing carriage-return in path.
|
||||
path = p.stdout.rstrip("\n")
|
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elif retval != 1:
|
||||
# `git config --get` is documented to produce an exit status of `1`
|
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# if the requested variable is not present in the configuration.
|
||||
# Report any other return value as an error.
|
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print(
|
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"repo: error: 'git config --get' call failed with return code: "
|
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"%r, stderr: %r" % (retval, p.stderr),
|
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file=sys.stderr,
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)
|
||||
return path
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||||
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||||
def _WriteLog(self, write_fn):
|
||||
"""Writes the log out using a provided writer function.
|
||||
|
||||
Generate compact JSON output for each item in the log, and write it
|
||||
using write_fn.
|
||||
|
||||
Args:
|
||||
write_fn: A function that accepts byts and writes them to a
|
||||
destination.
|
||||
"""
|
||||
|
||||
for e in self._log:
|
||||
# Dump in compact encoding mode.
|
||||
# See 'Compact encoding' in Python docs:
|
||||
# https://docs.python.org/3/library/json.html#module-json
|
||||
write_fn(
|
||||
json.dumps(e, indent=None, separators=(",", ":")).encode(
|
||||
"utf-8"
|
||||
)
|
||||
+ b"\n"
|
||||
)
|
||||
|
||||
def Write(self, path=None):
|
||||
"""Writes the log out to a file or socket.
|
||||
|
||||
Log is only written if 'path' or 'git config --get trace2.eventtarget'
|
||||
provide a valid path (or socket) to write logs to.
|
||||
|
||||
Logging filename format follows the git trace2 style of being a unique
|
||||
(exclusive writable) file.
|
||||
|
||||
Args:
|
||||
path: Path to where logs should be written. The path may have a
|
||||
prefix of the form "af_unix:[{stream|dgram}:]", in which case
|
||||
the path is treated as a Unix domain socket. See
|
||||
https://git-scm.com/docs/api-trace2#_enabling_a_target for
|
||||
details.
|
||||
|
||||
Returns:
|
||||
log_path: Path to the log file or socket if log is written,
|
||||
otherwise None
|
||||
"""
|
||||
log_path = None
|
||||
# If no logging path is specified, get the path from
|
||||
# 'trace2.eventtarget'.
|
||||
if path is None:
|
||||
path = self._GetEventTargetPath()
|
||||
|
||||
# If no logging path is specified, exit.
|
||||
if path is None:
|
||||
return None
|
||||
if socket_type == socket.SOCK_DGRAM or socket_type is None:
|
||||
try:
|
||||
with socket.socket(socket.AF_UNIX, socket.SOCK_DGRAM) as sock:
|
||||
self._WriteLog(lambda bs: sock.sendto(bs, path))
|
||||
return f'af_unix:dgram:{path}'
|
||||
except OSError as err:
|
||||
print(f'repo: warning: git trace2 logging failed: {err}', file=sys.stderr)
|
||||
return None
|
||||
# Tried to open a socket but couldn't connect (SOCK_STREAM) or write
|
||||
# (SOCK_DGRAM).
|
||||
print('repo: warning: git trace2 logging failed: could not write to socket', file=sys.stderr)
|
||||
return None
|
||||
|
||||
# Path is an absolute path
|
||||
# Use NamedTemporaryFile to generate a unique filename as required by git trace2.
|
||||
try:
|
||||
with tempfile.NamedTemporaryFile(mode='xb', prefix=self._sid, dir=path,
|
||||
delete=False) as f:
|
||||
# TODO(https://crbug.com/gerrit/13706): Support writing events as they
|
||||
# occur.
|
||||
self._WriteLog(f.write)
|
||||
log_path = f.name
|
||||
except FileExistsError as err:
|
||||
print('repo: warning: git trace2 logging failed: %r' % err,
|
||||
file=sys.stderr)
|
||||
return None
|
||||
return log_path
|
||||
path_is_socket = False
|
||||
socket_type = None
|
||||
if isinstance(path, str):
|
||||
parts = path.split(":", 1)
|
||||
if parts[0] == "af_unix" and len(parts) == 2:
|
||||
path_is_socket = True
|
||||
path = parts[1]
|
||||
parts = path.split(":", 1)
|
||||
if parts[0] == "stream" and len(parts) == 2:
|
||||
socket_type = socket.SOCK_STREAM
|
||||
path = parts[1]
|
||||
elif parts[0] == "dgram" and len(parts) == 2:
|
||||
socket_type = socket.SOCK_DGRAM
|
||||
path = parts[1]
|
||||
else:
|
||||
# Get absolute path.
|
||||
path = os.path.abspath(os.path.expanduser(path))
|
||||
else:
|
||||
raise TypeError("path: str required but got %s." % type(path))
|
||||
|
||||
# Git trace2 requires a directory to write log to.
|
||||
|
||||
# TODO(https://crbug.com/gerrit/13706): Support file (append) mode also.
|
||||
if not (path_is_socket or os.path.isdir(path)):
|
||||
return None
|
||||
|
||||
if path_is_socket:
|
||||
if socket_type == socket.SOCK_STREAM or socket_type is None:
|
||||
try:
|
||||
with socket.socket(
|
||||
socket.AF_UNIX, socket.SOCK_STREAM
|
||||
) as sock:
|
||||
sock.connect(path)
|
||||
self._WriteLog(sock.sendall)
|
||||
return f"af_unix:stream:{path}"
|
||||
except OSError as err:
|
||||
# If we tried to connect to a DGRAM socket using STREAM,
|
||||
# ignore the attempt and continue to DGRAM below. Otherwise,
|
||||
# issue a warning.
|
||||
if err.errno != errno.EPROTOTYPE:
|
||||
print(
|
||||
f"repo: warning: git trace2 logging failed: {err}",
|
||||
file=sys.stderr,
|
||||
)
|
||||
return None
|
||||
if socket_type == socket.SOCK_DGRAM or socket_type is None:
|
||||
try:
|
||||
with socket.socket(
|
||||
socket.AF_UNIX, socket.SOCK_DGRAM
|
||||
) as sock:
|
||||
self._WriteLog(lambda bs: sock.sendto(bs, path))
|
||||
return f"af_unix:dgram:{path}"
|
||||
except OSError as err:
|
||||
print(
|
||||
f"repo: warning: git trace2 logging failed: {err}",
|
||||
file=sys.stderr,
|
||||
)
|
||||
return None
|
||||
# Tried to open a socket but couldn't connect (SOCK_STREAM) or write
|
||||
# (SOCK_DGRAM).
|
||||
print(
|
||||
"repo: warning: git trace2 logging failed: could not write to "
|
||||
"socket",
|
||||
file=sys.stderr,
|
||||
)
|
||||
return None
|
||||
|
||||
# Path is an absolute path
|
||||
# Use NamedTemporaryFile to generate a unique filename as required by
|
||||
# git trace2.
|
||||
try:
|
||||
with tempfile.NamedTemporaryFile(
|
||||
mode="xb", prefix=self._sid, dir=path, delete=False
|
||||
) as f:
|
||||
# TODO(https://crbug.com/gerrit/13706): Support writing events
|
||||
# as they occur.
|
||||
self._WriteLog(f.write)
|
||||
log_path = f.name
|
||||
except FileExistsError as err:
|
||||
print(
|
||||
"repo: warning: git trace2 logging failed: %r" % err,
|
||||
file=sys.stderr,
|
||||
)
|
||||
return None
|
||||
return log_path
|
||||
|
||||
Reference in New Issue
Block a user