Comment on what's going on in clobber_with_worker_config

This commit is contained in:
Mark Haines 2016-06-16 11:29:45 +01:00
parent f1f70bf4b5
commit 80a1bc7db5

View file

@ -35,8 +35,19 @@ Worker = collections.namedtuple("Worker", [
def clobber_with_worker_config(config, worker_config):
"""Overrides some of the keys of the main config with worker-specific
values."""
values. We only need to override the keys that are accessed deep
withing synapse code. Most of the keys that we want to override in
the workers are accessed in setup code that is rewritten specifically
for the workers. In that new code we can access the worker config directly,
so we don't need to override the values in the main config."""
# TODO: The event_cache_size is accessed in the db setup. It should be
# possible to rejigg that code so that the cache size is pulled from the
# worker config directly.
config.event_cache_size = worker_config.event_cache_size
# TODO: The replication_url should only be accessed within worker specific
# code so it really shouldn't need to be clobbered in the main config.
config.replication_url = worker_config.replication_url