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https://github.com/element-hq/synapse
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Merge pull request #3577 from matrix-org/erikj/cleanup_context
Refcator EventContext to accept state during init
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commit
f0a1b8e4cd
3 changed files with 82 additions and 63 deletions
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changelog.d/3577.misc
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changelog.d/3577.misc
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@ -60,22 +60,22 @@ class EventContext(object):
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"app_service",
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]
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def __init__(self):
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def __init__(self, state_group, current_state_ids, prev_state_ids,
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prev_group=None, delta_ids=None):
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# The current state including the current event
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self.current_state_ids = None
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self.current_state_ids = current_state_ids
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# The current state excluding the current event
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self.prev_state_ids = None
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self.state_group = None
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self.rejected = False
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self.prev_state_ids = prev_state_ids
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self.state_group = state_group
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# A previously persisted state group and a delta between that
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# and this state.
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self.prev_group = None
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self.delta_ids = None
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self.prev_group = prev_group
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self.delta_ids = delta_ids
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self.prev_state_events = None
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self.prev_state_events = []
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self.rejected = False
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self.app_service = None
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def serialize(self, event):
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@ -123,27 +123,33 @@ class EventContext(object):
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Returns:
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EventContext
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"""
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context = EventContext()
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context.state_group = input["state_group"]
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context.rejected = input["rejected"]
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context.prev_group = input["prev_group"]
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context.delta_ids = _decode_state_dict(input["delta_ids"])
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context.prev_state_events = input["prev_state_events"]
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# We use the state_group and prev_state_id stuff to pull the
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# current_state_ids out of the DB and construct prev_state_ids.
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prev_state_id = input["prev_state_id"]
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event_type = input["event_type"]
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event_state_key = input["event_state_key"]
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context.current_state_ids = yield store.get_state_ids_for_group(
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context.state_group,
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state_group = input["state_group"]
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current_state_ids = yield store.get_state_ids_for_group(
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state_group,
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)
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if prev_state_id and event_state_key:
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context.prev_state_ids = dict(context.current_state_ids)
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context.prev_state_ids[(event_type, event_state_key)] = prev_state_id
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prev_state_ids = dict(current_state_ids)
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prev_state_ids[(event_type, event_state_key)] = prev_state_id
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else:
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context.prev_state_ids = context.current_state_ids
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prev_state_ids = current_state_ids
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context = EventContext(
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state_group=state_group,
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current_state_ids=current_state_ids,
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prev_state_ids=prev_state_ids,
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prev_group=input["prev_group"],
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delta_ids=_decode_state_dict(input["delta_ids"]),
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)
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context.rejected = input["rejected"]
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context.prev_state_events = input["prev_state_events"]
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app_service_id = input["app_service_id"]
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if app_service_id:
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@ -203,25 +203,27 @@ class StateHandler(object):
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# If this is an outlier, then we know it shouldn't have any current
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# state. Certainly store.get_current_state won't return any, and
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# persisting the event won't store the state group.
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context = EventContext()
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if old_state:
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context.prev_state_ids = {
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prev_state_ids = {
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(s.type, s.state_key): s.event_id for s in old_state
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}
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if event.is_state():
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context.current_state_ids = dict(context.prev_state_ids)
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current_state_ids = dict(prev_state_ids)
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key = (event.type, event.state_key)
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context.current_state_ids[key] = event.event_id
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current_state_ids[key] = event.event_id
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else:
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context.current_state_ids = context.prev_state_ids
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current_state_ids = prev_state_ids
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else:
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context.current_state_ids = {}
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context.prev_state_ids = {}
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context.prev_state_events = []
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current_state_ids = {}
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prev_state_ids = {}
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# We don't store state for outliers, so we don't generate a state
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# froup for it.
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context.state_group = None
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# group for it.
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context = EventContext(
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state_group=None,
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current_state_ids=current_state_ids,
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prev_state_ids=prev_state_ids,
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)
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defer.returnValue(context)
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@ -230,31 +232,35 @@ class StateHandler(object):
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# Let's just correctly fill out the context and create a
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# new state group for it.
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context = EventContext()
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context.prev_state_ids = {
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prev_state_ids = {
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(s.type, s.state_key): s.event_id for s in old_state
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}
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if event.is_state():
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key = (event.type, event.state_key)
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if key in context.prev_state_ids:
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replaces = context.prev_state_ids[key]
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if key in prev_state_ids:
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replaces = prev_state_ids[key]
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if replaces != event.event_id: # Paranoia check
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event.unsigned["replaces_state"] = replaces
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context.current_state_ids = dict(context.prev_state_ids)
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context.current_state_ids[key] = event.event_id
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current_state_ids = dict(prev_state_ids)
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current_state_ids[key] = event.event_id
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else:
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context.current_state_ids = context.prev_state_ids
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current_state_ids = prev_state_ids
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context.state_group = yield self.store.store_state_group(
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state_group = yield self.store.store_state_group(
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event.event_id,
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event.room_id,
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prev_group=None,
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delta_ids=None,
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current_state_ids=context.current_state_ids,
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current_state_ids=current_state_ids,
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)
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context = EventContext(
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state_group=state_group,
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current_state_ids=current_state_ids,
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prev_state_ids=prev_state_ids,
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)
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context.prev_state_events = []
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defer.returnValue(context)
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logger.debug("calling resolve_state_groups from compute_event_context")
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@ -262,47 +268,47 @@ class StateHandler(object):
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event.room_id, [e for e, _ in event.prev_events],
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)
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curr_state = entry.state
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prev_state_ids = entry.state
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prev_group = None
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delta_ids = None
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context = EventContext()
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context.prev_state_ids = curr_state
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if event.is_state():
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# If this is a state event then we need to create a new state
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# group for the state after this event.
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key = (event.type, event.state_key)
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if key in context.prev_state_ids:
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replaces = context.prev_state_ids[key]
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if key in prev_state_ids:
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replaces = prev_state_ids[key]
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event.unsigned["replaces_state"] = replaces
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context.current_state_ids = dict(context.prev_state_ids)
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context.current_state_ids[key] = event.event_id
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current_state_ids = dict(prev_state_ids)
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current_state_ids[key] = event.event_id
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if entry.state_group:
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# If the state at the event has a state group assigned then
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# we can use that as the prev group
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context.prev_group = entry.state_group
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context.delta_ids = {
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prev_group = entry.state_group
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delta_ids = {
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key: event.event_id
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}
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elif entry.prev_group:
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# If the state at the event only has a prev group, then we can
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# use that as a prev group too.
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context.prev_group = entry.prev_group
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context.delta_ids = dict(entry.delta_ids)
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context.delta_ids[key] = event.event_id
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prev_group = entry.prev_group
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delta_ids = dict(entry.delta_ids)
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delta_ids[key] = event.event_id
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context.state_group = yield self.store.store_state_group(
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state_group = yield self.store.store_state_group(
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event.event_id,
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event.room_id,
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prev_group=context.prev_group,
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delta_ids=context.delta_ids,
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current_state_ids=context.current_state_ids,
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prev_group=prev_group,
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delta_ids=delta_ids,
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current_state_ids=current_state_ids,
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)
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else:
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context.current_state_ids = context.prev_state_ids
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context.prev_group = entry.prev_group
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context.delta_ids = entry.delta_ids
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current_state_ids = prev_state_ids
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prev_group = entry.prev_group
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delta_ids = entry.delta_ids
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if entry.state_group is None:
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entry.state_group = yield self.store.store_state_group(
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@ -310,13 +316,20 @@ class StateHandler(object):
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event.room_id,
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prev_group=entry.prev_group,
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delta_ids=entry.delta_ids,
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current_state_ids=context.current_state_ids,
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current_state_ids=current_state_ids,
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)
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entry.state_id = entry.state_group
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context.state_group = entry.state_group
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state_group = entry.state_group
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context = EventContext(
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state_group=state_group,
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current_state_ids=current_state_ids,
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prev_state_ids=prev_state_ids,
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prev_group=prev_group,
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delta_ids=delta_ids,
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)
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context.prev_state_events = []
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defer.returnValue(context)
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@defer.inlineCallbacks
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