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Allow background tasks to be run on a separate worker. (#8369)

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Patrick Cloke 2020-10-02 08:23:15 -04:00 • committed by GitHub
parent 462e681c79
commit 62894673e6
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19 changed files with 537 additions and 449 deletions
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synapse/config/workers.py
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@ -132,6 +132,19 @@ class WorkerConfig(Config):
self.events_shard_config = ShardedWorkerHandlingConfig(self.writers.events)
# Whether this worker should run background tasks or not.
#
# As a note for developers, the background tasks guarded by this should
# be able to run on only a single instance (meaning that they don't
# depend on any in-memory state of a particular worker).
#
# No effort is made to ensure only a single instance of these tasks is
# running.
background_tasks_instance = config.get("run_background_tasks_on") or "master"
self.run_background_tasks = (
self.worker_name is None and background_tasks_instance == "master"
) or self.worker_name == background_tasks_instance
def generate_config_section(self, config_dir_path, server_name, **kwargs):
return """\
## Workers ##
@ -167,6 +180,11 @@ class WorkerConfig(Config):
#stream_writers:
# events: worker1
# typing: worker1
# The worker that is used to run background tasks (e.g. cleaning up expired
# data). If not provided this defaults to the main process.
#
#run_background_tasks_on: worker1
"""
def read_arguments(self, args):