def compute_event_context(self, event, old_state=None):
""" Fills out the context with the `current state` of the graph. The
`current state` here is defined to be the state of the event graph
just before the event - i.e. it never includes `event`
If `event` has `auth_events` then this will also fill out the
`auth_events` field on `context` from the `current_state`.
Args:
event (EventBase)
Returns:
an EventContext
"""
context = EventContext()
yield run_on_reactor()
if old_state:
context.current_state = {(s.type, s.state_key): s
for s in old_state}
context.state_group = None
if event.is_state():
key = (event.type, event.state_key)
if key in context.current_state:
replaces = context.current_state[key]
if replaces.event_id != event.event_id: # Paranoia check
event.unsigned["replaces_state"] = replaces.event_id
context.prev_state_events = []
defer.returnValue(context)
if event.is_state():
ret = yield self.resolve_state_groups(
[e for e, _ in event.prev_events],
event_type=event.type,
state_key=event.state_key,
)
else:
ret = yield self.resolve_state_groups(
[e for e, _ in event.prev_events], )
group, curr_state, prev_state = ret
context.current_state = curr_state
context.state_group = group if not event.is_state() else None
prev_state = yield self.store.add_event_hashes(prev_state)
if event.is_state():
key = (event.type, event.state_key)
if key in context.current_state:
replaces = context.current_state[key]
event.unsigned["replaces_state"] = replaces.event_id
context.prev_state_events = prev_state
defer.returnValue(context)
def compute_event_context(self, event, old_state=None):
""" Fills out the context with the `current state` of the graph. The
`current state` here is defined to be the state of the event graph
just before the event - i.e. it never includes `event`
If `event` has `auth_events` then this will also fill out the
`auth_events` field on `context` from the `current_state`.
Args:
event (EventBase)
Returns:
an EventContext
"""
context = EventContext()
yield run_on_reactor()
if old_state:
context.current_state = {
(s.type, s.state_key): s for s in old_state
}
context.state_group = None
if hasattr(event, "auth_events") and event.auth_events:
auth_ids = zip(*event.auth_events)[0]
context.auth_events = {
k: v
for k, v in context.current_state.items()
if v.event_id in auth_ids
}
else:
context.auth_events = {}
if event.is_state():
key = (event.type, event.state_key)
if key in context.current_state:
replaces = context.current_state[key]
if replaces.event_id != event.event_id: # Paranoia check
event.unsigned["replaces_state"] = replaces.event_id
context.prev_state_events = []
defer.returnValue(context)
if event.is_state():
ret = yield self.resolve_state_groups(
[e for e, _ in event.prev_events],
event_type=event.type,
state_key=event.state_key,
)
else:
ret = yield self.resolve_state_groups(
[e for e, _ in event.prev_events],
)
group, curr_state, prev_state = ret
context.current_state = curr_state
context.state_group = group if not event.is_state() else None
prev_state = yield self.store.add_event_hashes(
prev_state
)
if event.is_state():
key = (event.type, event.state_key)
if key in context.current_state:
replaces = context.current_state[key]
event.unsigned["replaces_state"] = replaces.event_id
if hasattr(event, "auth_events") and event.auth_events:
auth_ids = zip(*event.auth_events)[0]
context.auth_events = {
k: v
for k, v in context.current_state.items()
if v.event_id in auth_ids
}
else:
context.auth_events = {}
context.prev_state_events = prev_state
defer.returnValue(context)
def compute_event_context(self, event, old_state=None, outlier=False):
""" Fills out the context with the `current state` of the graph. The
`current state` here is defined to be the state of the event graph
just before the event - i.e. it never includes `event`
If `event` has `auth_events` then this will also fill out the
`auth_events` field on `context` from the `current_state`.
Args:
event (EventBase)
Returns:
an EventContext
"""
yield run_on_reactor()
context = EventContext()
if outlier:
# If this is an outlier, then we know it shouldn't have any current
# state. Certainly store.get_current_state won't return any, and
# persisting the event won't store the state group.
if old_state:
context.current_state = {(s.type, s.state_key): s
for s in old_state}
else:
context.current_state = {}
context.prev_state_events = []
context.state_group = None
defer.returnValue(context)
if old_state:
context.current_state = {(s.type, s.state_key): s
for s in old_state}
context.state_group = None
if event.is_state():
key = (event.type, event.state_key)
if key in context.current_state:
replaces = context.current_state[key]
if replaces.event_id != event.event_id: # Paranoia check
event.unsigned["replaces_state"] = replaces.event_id
context.prev_state_events = []
defer.returnValue(context)
if event.is_state():
ret = yield self.resolve_state_groups(
[e for e, _ in event.prev_events],
event_type=event.type,
state_key=event.state_key,
)
else:
ret = yield self.resolve_state_groups(
[e for e, _ in event.prev_events], )
group, curr_state, prev_state = ret
context.current_state = curr_state
context.state_group = group if not event.is_state() else None
if event.is_state():
key = (event.type, event.state_key)
if key in context.current_state:
replaces = context.current_state[key]
event.unsigned["replaces_state"] = replaces.event_id
context.prev_state_events = prev_state
defer.returnValue(context)
def compute_event_context(self, event, old_state=None, outlier=False):
""" Fills out the context with the `current state` of the graph. The
`current state` here is defined to be the state of the event graph
just before the event - i.e. it never includes `event`
If `event` has `auth_events` then this will also fill out the
`auth_events` field on `context` from the `current_state`.
Args:
event (EventBase)
Returns:
an EventContext
"""
yield run_on_reactor()
context = EventContext()
if outlier:
# If this is an outlier, then we know it shouldn't have any current
# state. Certainly store.get_current_state won't return any, and
# persisting the event won't store the state group.
if old_state:
context.current_state = {
(s.type, s.state_key): s for s in old_state
}
else:
context.current_state = {}
context.prev_state_events = []
context.state_group = None
defer.returnValue(context)
if old_state:
context.current_state = {
(s.type, s.state_key): s for s in old_state
}
context.state_group = None
if event.is_state():
key = (event.type, event.state_key)
if key in context.current_state:
replaces = context.current_state[key]
if replaces.event_id != event.event_id: # Paranoia check
event.unsigned["replaces_state"] = replaces.event_id
context.prev_state_events = []
defer.returnValue(context)
if event.is_state():
ret = yield self.resolve_state_groups(
event.room_id, [e for e, _ in event.prev_events],
event_type=event.type,
state_key=event.state_key,
)
else:
ret = yield self.resolve_state_groups(
event.room_id, [e for e, _ in event.prev_events],
)
group, curr_state, prev_state = ret
context.current_state = curr_state
context.state_group = group if not event.is_state() else None
if event.is_state():
key = (event.type, event.state_key)
if key in context.current_state:
replaces = context.current_state[key]
event.unsigned["replaces_state"] = replaces.event_id
context.prev_state_events = prev_state
defer.returnValue(context)