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Diffstat (limited to 'pygerrit/stream.py')
-rw-r--r-- | pygerrit/stream.py | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/pygerrit/stream.py b/pygerrit/stream.py new file mode 100644 index 0000000..1504dde --- /dev/null +++ b/pygerrit/stream.py @@ -0,0 +1,77 @@ +# The MIT License +# +# Copyright 2012 Sony Mobile Communications. All rights reserved. +# +# Permission is hereby granted, free of charge, to any person obtaining a copy +# of this software and associated documentation files (the "Software"), to deal +# in the Software without restriction, including without limitation the rights +# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +# copies of the Software, and to permit persons to whom the Software is +# furnished to do so, subject to the following conditions: +# +# The above copyright notice and this permission notice shall be included in +# all copies or substantial portions of the Software. +# +# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +# THE SOFTWARE. + +""" Gerrit event stream interface. + +Class to listen to the Gerrit event stream and dispatch events. + +""" + +from threading import Thread, Event + +from .events import ErrorEvent + + +class GerritStream(Thread): + + """ Gerrit events stream handler. """ + + def __init__(self, gerrit, ssh_client): + Thread.__init__(self) + self.daemon = True + self._gerrit = gerrit + self._ssh_client = ssh_client + self._stop = Event() + self._channel = None + + def stop(self): + """ Stop the thread. """ + self._stop.set() + if self._channel is not None: + self._channel.close() + + def _error_event(self, error): + """ Dispatch `error` to the Gerrit client. """ + self._gerrit.put_event(ErrorEvent.error_json(error)) + + def run(self): + """ Listen to the stream and send events to the client. """ + channel = self._ssh_client.get_transport().open_session() + self._channel = channel + channel.exec_command("gerrit stream-events") + stdout = channel.makefile() + stderr = channel.makefile_stderr() + while not self._stop.is_set(): + try: + if channel.exit_status_ready(): + if channel.recv_stderr_ready(): + error = stderr.readline().strip() + else: + error = "Remote server connection closed" + self._error_event(error) + self._stop.set() + else: + data = stdout.readline() + self._gerrit.put_event(data) + except Exception as e: # pylint: disable=W0703 + self._error_event(repr(e)) + self._stop.set() |