220 lines
7.2 KiB
Python
220 lines
7.2 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2016 OpenMarket Ltd
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import logging
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from twisted.internet import defer, reactor
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from ._base import Cache
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from . import background_updates
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from synapse.util.caches import CACHE_SIZE_FACTOR
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logger = logging.getLogger(__name__)
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# Number of msec of granularity to store the user IP 'last seen' time. Smaller
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# times give more inserts into the database even for readonly API hits
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# 120 seconds == 2 minutes
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LAST_SEEN_GRANULARITY = 120 * 1000
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class ClientIpStore(background_updates.BackgroundUpdateStore):
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def __init__(self, hs):
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self.client_ip_last_seen = Cache(
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name="client_ip_last_seen",
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keylen=4,
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max_entries=50000 * CACHE_SIZE_FACTOR,
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)
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super(ClientIpStore, self).__init__(hs)
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self.register_background_index_update(
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"user_ips_device_index",
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index_name="user_ips_device_id",
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table="user_ips",
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columns=["user_id", "device_id", "last_seen"],
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)
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# (user_id, access_token, ip) -> (user_agent, device_id, last_seen)
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self._batch_row_update = {}
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self._client_ip_looper = self._clock.looping_call(
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self._update_client_ips_batch, 5 * 1000
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)
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reactor.addSystemEventTrigger("before", "shutdown", self._update_client_ips_batch)
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def insert_client_ip(self, user, access_token, ip, user_agent, device_id):
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now = int(self._clock.time_msec())
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key = (user.to_string(), access_token, ip)
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try:
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last_seen = self.client_ip_last_seen.get(key)
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except KeyError:
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last_seen = None
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# Rate-limited inserts
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if last_seen is not None and (now - last_seen) < LAST_SEEN_GRANULARITY:
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return
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self.client_ip_last_seen.prefill(key, now)
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self._batch_row_update[key] = (user_agent, device_id, now)
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def _update_client_ips_batch(self):
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to_update = self._batch_row_update
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self._batch_row_update = {}
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return self.runInteraction(
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"_update_client_ips_batch", self._update_client_ips_batch_txn, to_update
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)
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def _update_client_ips_batch_txn(self, txn, to_update):
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self.database_engine.lock_table(txn, "user_ips")
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for entry in to_update.iteritems():
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(user_id, access_token, ip), (user_agent, device_id, last_seen) = entry
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self._simple_upsert_txn(
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txn,
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table="user_ips",
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keyvalues={
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"user_id": user_id,
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"access_token": access_token,
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"ip": ip,
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"user_agent": user_agent,
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"device_id": device_id,
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},
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values={
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"last_seen": last_seen,
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},
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lock=False,
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)
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@defer.inlineCallbacks
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def get_last_client_ip_by_device(self, user_id, device_id):
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"""For each device_id listed, give the user_ip it was last seen on
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Args:
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user_id (str)
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device_id (str): If None fetches all devices for the user
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Returns:
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defer.Deferred: resolves to a dict, where the keys
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are (user_id, device_id) tuples. The values are also dicts, with
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keys giving the column names
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"""
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res = yield self.runInteraction(
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"get_last_client_ip_by_device",
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self._get_last_client_ip_by_device_txn,
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user_id, device_id,
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retcols=(
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"user_id",
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"access_token",
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"ip",
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"user_agent",
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"device_id",
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"last_seen",
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),
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)
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ret = {(d["user_id"], d["device_id"]): d for d in res}
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for key in self._batch_row_update:
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uid, access_token, ip = key
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if uid == user_id:
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user_agent, did, last_seen = self._batch_row_update[key]
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if not device_id or did == device_id:
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ret[(user_id, device_id)] = {
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"user_id": user_id,
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"access_token": access_token,
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"ip": ip,
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"user_agent": user_agent,
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"device_id": did,
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"last_seen": last_seen,
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}
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defer.returnValue(ret)
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@classmethod
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def _get_last_client_ip_by_device_txn(cls, txn, user_id, device_id, retcols):
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where_clauses = []
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bindings = []
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if device_id is None:
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where_clauses.append("user_id = ?")
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bindings.extend((user_id, ))
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else:
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where_clauses.append("(user_id = ? AND device_id = ?)")
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bindings.extend((user_id, device_id))
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if not where_clauses:
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return []
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inner_select = (
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"SELECT MAX(last_seen) mls, user_id, device_id FROM user_ips "
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"WHERE %(where)s "
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"GROUP BY user_id, device_id"
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) % {
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"where": " OR ".join(where_clauses),
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}
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sql = (
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"SELECT %(retcols)s FROM user_ips "
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"JOIN (%(inner_select)s) ips ON"
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" user_ips.last_seen = ips.mls AND"
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" user_ips.user_id = ips.user_id AND"
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" (user_ips.device_id = ips.device_id OR"
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" (user_ips.device_id IS NULL AND ips.device_id IS NULL)"
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" )"
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) % {
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"retcols": ",".join("user_ips." + c for c in retcols),
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"inner_select": inner_select,
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}
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txn.execute(sql, bindings)
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return cls.cursor_to_dict(txn)
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@defer.inlineCallbacks
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def get_user_ip_and_agents(self, user):
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user_id = user.to_string()
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results = {}
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for key in self._batch_row_update:
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uid, access_token, ip = key
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if uid == user_id:
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user_agent, _, last_seen = self._batch_row_update[key]
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results[(access_token, ip)] = (user_agent, last_seen)
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rows = yield self._simple_select_list(
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table="user_ips",
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keyvalues={"user_id": user_id},
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retcols=[
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"access_token", "ip", "user_agent", "last_seen"
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],
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desc="get_user_ip_and_agents",
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)
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results.update(
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((row["access_token"], row["ip"]), (row["user_agent"], row["last_seen"]))
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for row in rows
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)
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defer.returnValue(list(
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{
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"access_token": access_token,
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"ip": ip,
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"user_agent": user_agent,
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"last_seen": last_seen,
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}
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for (access_token, ip), (user_agent, last_seen) in results.iteritems()
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))
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