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# -*- coding: utf-8 -*-
# Copyright 2015 OpenMarket 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.
from twisted.internet import defer
from ._base import BaseHandler
from synapse.api.constants import Membership
from synapse.api.filtering import Filter
from synapse.api.errors import SynapseError
from synapse.events.utils import serialize_event
import logging
logger = logging.getLogger(__name__)
class SearchHandler(BaseHandler):
def __init__(self, hs):
super(SearchHandler, self).__init__(hs)
@defer.inlineCallbacks
def search(self, user, content):
"""Performs a full text search for a user.
Args:
user (UserID)
content (dict): Search parameters
Returns:
dict to be returned to the client with results of search
"""
try:
search_term = content["search_categories"]["room_events"]["search_term"]
keys = content["search_categories"]["room_events"].get("keys", [
"content.body", "content.name", "content.topic",
])
filter_dict = content["search_categories"]["room_events"].get("filter", {})
event_context = content["search_categories"]["room_events"].get(
"event_context", None
)
if event_context is not None:
before_limit = int(event_context.get(
"before_limit", 5
))
after_limit = int(event_context.get(
"after_limit", 5
))
except KeyError:
raise SynapseError(400, "Invalid search query")
search_filter = Filter(filter_dict)
# TODO: Search through left rooms too
rooms = yield self.store.get_rooms_for_user_where_membership_is(
user.to_string(),
membership_list=[Membership.JOIN],
# membership_list=[Membership.JOIN, Membership.LEAVE, Membership.Ban],
)
room_ids = set(r.room_id for r in rooms)
room_ids = search_filter.filter_rooms(room_ids)
rank_map, event_map, _ = yield self.store.search_msgs(
room_ids, search_term, keys
)
filtered_events = search_filter.filter(event_map.values())
allowed_events = yield self._filter_events_for_client(
user.to_string(), filtered_events
)
allowed_events.sort(key=lambda e: -rank_map[e.event_id])
allowed_events = allowed_events[:search_filter.limit()]
if event_context is not None:
now_token = yield self.hs.get_event_sources().get_current_token()
contexts = {}
for event in allowed_events:
res = yield self.store.get_events_around(
event.room_id, event.event_id, before_limit, after_limit
)
res["events_before"] = yield self._filter_events_for_client(
user.to_string(), res["events_before"]
)
res["events_after"] = yield self._filter_events_for_client(
user.to_string(), res["events_after"]
)
res["start"] = now_token.copy_and_replace(
"room_key", res["start"]
).to_string()
res["end"] = now_token.copy_and_replace(
"room_key", res["end"]
).to_string()
contexts[event.event_id] = res
else:
contexts = {}
# TODO: Add a limit
time_now = self.clock.time_msec()
for context in contexts.values():
context["events_before"] = [
serialize_event(e, time_now)
for e in context["events_before"]
]
context["events_after"] = [
serialize_event(e, time_now)
for e in context["events_after"]
]
results = {
e.event_id: {
"rank": rank_map[e.event_id],
"result": serialize_event(e, time_now),
"context": contexts.get(e.event_id, {}),
}
for e in allowed_events
}
logger.info("Found %d results", len(results))
defer.returnValue({
"search_categories": {
"room_events": {
"results": results,
"count": len(results)
}
}
})
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