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Include outlier status in str(event) for V2/V3 events (#10879)

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I meant to do this before, in #10591, but because I'm stupid I forgot to do it
for V2 and V3 events.

I've factored the common code out to `EventBase` to save us having two copies
of it.

This means that for `FrozenEvent` we replace `self.get("event_id", None)` with
`self.event_id`, which I think is safe. `get()` is an alias for
`self._dict.get()`, whereas `event_id()` is an `@property` method which looks
up `self._event_id`, which is populated during construction from the same
dict. We don't seem to rely on the fallback, because if the `event_id` key is
absent from the dict then construction of the `EventBase` object will
fail.

Long story short, the only way this could change behaviour is if
`event_dict["event_id"]` is changed *after* the `EventBase` object is
constructed without updating the `_event_id` field, or vice versa - either of
which would be very problematic anyway and the behavior of `str(event)` is the
least of our worries.
This commit is contained in:
Richard van der Hoff 2021-09-22 12:30:59 +01:00 committed by GitHub
parent a2d7195e01
commit 4ecf51812e
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2 changed files with 13 additions and 22 deletions
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changelog.d/10879.misc Normal file
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@ -0,0 +1 @@
Include outlier status when we log V2 or V3 events.

34
synapse/events/__init__.py
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@ -344,6 +344,18 @@ class EventBase(metaclass=abc.ABCMeta):
# this will be a no-op if the event dict is already frozen.
self._dict = freeze(self._dict)
def __str__(self):
return self.__repr__()
def __repr__(self):
return "<%s event_id=%r, type=%r, state_key=%r, outlier=%s>" % (
self.__class__.__name__,
self.event_id,
self.get("type", None),
self.get("state_key", None),
self.internal_metadata.is_outlier(),
)
class FrozenEvent(EventBase):
format_version = EventFormatVersions.V1 # All events of this type are V1
@ -392,17 +404,6 @@ class FrozenEvent(EventBase):
def event_id(self) -> str:
return self._event_id
def __str__(self):
return self.__repr__()
def __repr__(self):
return "<FrozenEvent event_id=%r, type=%r, state_key=%r, outlier=%s>" % (
self.get("event_id", None),
self.get("type", None),
self.get("state_key", None),
self.internal_metadata.is_outlier(),
)
class FrozenEventV2(EventBase):
format_version = EventFormatVersions.V2 # All events of this type are V2
@ -478,17 +479,6 @@ class FrozenEventV2(EventBase):
"""
return self.auth_events
def __str__(self):
return self.__repr__()
def __repr__(self):
return "<%s event_id=%r, type=%r, state_key=%r>" % (
self.__class__.__name__,
self.event_id,
self.get("type", None),
self.get("state_key", None),
)
class FrozenEventV3(FrozenEventV2):
"""FrozenEventV3, which differs from FrozenEventV2 only in the event_id format"""