Merge pull request #4437 from matrix-org/erikj/event_format_version_v2

Add support for persisting event format versions
pull/4476/head
Erik Johnston 2019-01-24 18:32:30 +00:00 committed by GitHub
commit 664b7a2920
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6 changed files with 49 additions and 4 deletions

1
changelog.d/4437.misc Normal file
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@ -0,0 +1 @@
Add infrastructure to support different event formats

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@ -120,6 +120,19 @@ KNOWN_ROOM_VERSIONS = {
RoomVersions.STATE_V2_TEST,
}
class EventFormatVersions(object):
"""This is an internal enum for tracking the version of the event format,
independently from the room version.
"""
V1 = 1
KNOWN_EVENT_FORMAT_VERSIONS = {
EventFormatVersions.V1,
}
ServerNoticeMsgType = "m.server_notice"
ServerNoticeLimitReached = "m.server_notice.usage_limit_reached"

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@ -18,6 +18,7 @@ from distutils.util import strtobool
import six
from synapse.api.constants import EventFormatVersions
from synapse.util.caches import intern_dict
from synapse.util.frozenutils import freeze
@ -179,6 +180,8 @@ class EventBase(object):
class FrozenEvent(EventBase):
format_version = EventFormatVersions.V1 # All events of this type are V1
def __init__(self, event_dict, internal_metadata_dict={}, rejected_reason=None):
event_dict = dict(event_dict)

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@ -1268,6 +1268,7 @@ class EventsStore(StateGroupWorkerStore, EventFederationStore, EventsWorkerStore
event.internal_metadata.get_dict()
),
"json": encode_json(event_dict(event)),
"format_version": event.format_version,
}
for event, _ in events_and_contexts
],

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@ -21,10 +21,10 @@ from canonicaljson import json
from twisted.internet import defer
from synapse.api.constants import EventFormatVersions
from synapse.api.errors import NotFoundError
# these are only included to make the type annotations work
from synapse.events import EventBase # noqa: F401
from synapse.events import FrozenEvent
# these are only included to make the type annotations work
from synapse.events.snapshot import EventContext # noqa: F401
from synapse.events.utils import prune_event
from synapse.metrics.background_process_metrics import run_as_background_process
@ -353,6 +353,7 @@ class EventsWorkerStore(SQLBaseStore):
self._get_event_from_row,
row["internal_metadata"], row["json"], row["redacts"],
rejected_reason=row["rejects"],
format_version=row["format_version"],
)
for row in rows
],
@ -377,6 +378,7 @@ class EventsWorkerStore(SQLBaseStore):
" e.event_id as event_id, "
" e.internal_metadata,"
" e.json,"
" e.format_version, "
" r.redacts as redacts,"
" rej.event_id as rejects "
" FROM event_json as e"
@ -392,7 +394,7 @@ class EventsWorkerStore(SQLBaseStore):
@defer.inlineCallbacks
def _get_event_from_row(self, internal_metadata, js, redacted,
rejected_reason=None):
format_version, rejected_reason=None):
with Measure(self._clock, "_get_event_from_row"):
d = json.loads(js)
internal_metadata = json.loads(internal_metadata)
@ -405,8 +407,17 @@ class EventsWorkerStore(SQLBaseStore):
desc="_get_event_from_row_rejected_reason",
)
if format_version is None:
# This means that we stored the event before we had the concept
# of a event format version, so it must be a V1 event.
format_version = EventFormatVersions.V1
# TODO: When we implement new event formats we'll need to use a
# different event python type
assert format_version == EventFormatVersions.V1
original_ev = FrozenEvent(
d,
event_dict=d,
internal_metadata_dict=internal_metadata,
rejected_reason=rejected_reason,
)

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@ -0,0 +1,16 @@
/* Copyright 2019 New Vector Ltd
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
ALTER TABLE event_json ADD COLUMN format_version INTEGER;