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Configurable maximum number of events requested by /sync and /messages (#2220)

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Set the limit on the returned events in the timeline in the get and sync
operations. The default value is -1, means no upper limit.

For example, using `filter_timeline_limit: 5000`:

POST /_matrix/client/r0/user/user:id/filter
{
room: {
    timeline: {
      limit: 1000000000000000000
    }
}
}

GET /_matrix/client/r0/user/user:id/filter/filter:id

{
room: {
    timeline: {
      limit: 5000
    }
}
}

The server cuts down the room.timeline.limit.
This commit is contained in:
Pablo Saavedra 2017-05-13 18:17:54 +02:00
parent 29ded770b1
commit 9da4316ca5
4 changed files with 21 additions and 0 deletions
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8
synapse/rest/client/v2_alpha/_base.py
View file

@ -47,3 +47,11 @@ def client_v2_patterns(path_regex, releases=(0,),
new_prefix = CLIENT_V2_ALPHA_PREFIX.replace("/v2_alpha", "/r%d" % release)
patterns.append(re.compile("^" + new_prefix + path_regex))
return patterns
def set_timeline_upper_limit(filter_json, filter_timeline_limit):
if filter_timeline_limit < 0:
return # no upper limits
if 'room' in filter_json and 'limit' in filter_json['room']:
filter_json['room']["limit"] = min(filter_json['room']["limit"],
filter_timeline_limit)

4
synapse/rest/client/v2_alpha/filter.py
View file

@ -20,6 +20,7 @@ from synapse.http.servlet import RestServlet, parse_json_object_from_request
from synapse.types import UserID
from ._base import client_v2_patterns
from ._base import set_timeline_upper_limit
import logging
@ -85,6 +86,9 @@ class CreateFilterRestServlet(RestServlet):
raise AuthError(403, "Can only create filters for local users")
content = parse_json_object_from_request(request)
set_timeline_upper_limit(content,
self.hs.config.filter_timeline_limit)
filter_id = yield self.filtering.add_user_filter(
user_localpart=target_user.localpart,
user_filter=content,

3
synapse/rest/client/v2_alpha/sync.py
View file

@ -28,6 +28,7 @@ from synapse.api.filtering import FilterCollection, DEFAULT_FILTER_COLLECTION
from synapse.api.errors import SynapseError
from synapse.api.constants import PresenceState
from ._base import client_v2_patterns
from ._base import set_timeline_upper_limit
import itertools
import logging
@ -121,6 +122,8 @@ class SyncRestServlet(RestServlet):
if filter_id.startswith('{'):
try:
filter_object = json.loads(filter_id)
set_timeline_upper_limit(filter_object,
self.hs.config.filter_timeline_limit)
except:
raise SynapseError(400, "Invalid filter JSON")
self.filtering.check_valid_filter(filter_object)