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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.
import logging
from twisted.internet import defer
from synapse.api.errors import StoreError
from synapse.appservice import ApplicationService
from synapse.storage.roommember import RoomsForUser
from ._base import SQLBaseStore
logger = logging.getLogger(__name__)
class ApplicationServiceStore(SQLBaseStore):
def __init__(self, hs):
super(ApplicationServiceStore, self).__init__(hs)
self.services_cache = []
self.cache_defer = self._populate_cache()
@defer.inlineCallbacks
def unregister_app_service(self, token):
"""Unregisters this service.
This removes all AS specific regex and the base URL. The token is the
only thing preserved for future registration attempts.
"""
yield self.cache_defer # make sure the cache is ready
yield self.runInteraction(
"unregister_app_service",
self._unregister_app_service_txn,
token,
)
# update cache TODO: Should this be in the txn?
for service in self.services_cache:
if service.token == token:
service.url = None
service.namespaces = None
service.hs_token = None
def _unregister_app_service_txn(self, txn, token):
# kill the url to prevent pushes
txn.execute(
"UPDATE application_services SET url=NULL WHERE token=?",
(token,)
)
# cleanup regex
as_id = self._get_as_id_txn(txn, token)
if not as_id:
logger.warning(
"unregister_app_service_txn: Failed to find as_id for token=",
token
)
return False
txn.execute(
"DELETE FROM application_services_regex WHERE as_id=?",
(as_id,)
)
return True
@defer.inlineCallbacks
def update_app_service(self, service):
"""Update an application service, clobbering what was previously there.
Args:
service(ApplicationService): The updated service.
"""
yield self.cache_defer # make sure the cache is ready
# NB: There is no "insert" since we provide no public-facing API to
# allocate new ASes. It relies on the server admin inserting the AS
# token into the database manually.
if not service.token or not service.url:
raise StoreError(400, "Token and url must be specified.")
if not service.hs_token:
raise StoreError(500, "No HS token")
yield self.runInteraction(
"update_app_service",
self._update_app_service_txn,
service
)
# update cache TODO: Should this be in the txn?
for (index, cache_service) in enumerate(self.services_cache):
if service.token == cache_service.token:
self.services_cache[index] = service
logger.info("Updated: %s", service)
return
# new entry
self.services_cache.append(service)
logger.info("Updated(new): %s", service)
def _update_app_service_txn(self, txn, service):
as_id = self._get_as_id_txn(txn, service.token)
if not as_id:
logger.warning(
"update_app_service_txn: Failed to find as_id for token=",
service.token
)
return False
txn.execute(
"UPDATE application_services SET url=?, hs_token=?, sender=? "
"WHERE id=?",
(service.url, service.hs_token, service.sender, as_id,)
)
# cleanup regex
txn.execute(
"DELETE FROM application_services_regex WHERE as_id=?",
(as_id,)
)
for (ns_int, ns_str) in enumerate(ApplicationService.NS_LIST):
if ns_str in service.namespaces:
for regex in service.namespaces[ns_str]:
txn.execute(
"INSERT INTO application_services_regex("
"as_id, namespace, regex) values(?,?,?)",
(as_id, ns_int, regex)
)
return True
def _get_as_id_txn(self, txn, token):
cursor = txn.execute(
"SELECT id FROM application_services WHERE token=?",
(token,)
)
res = cursor.fetchone()
if res:
return res[0]
@defer.inlineCallbacks
def get_app_services(self):
yield self.cache_defer # make sure the cache is ready
defer.returnValue(self.services_cache)
@defer.inlineCallbacks
def get_app_service_by_user_id(self, user_id):
yield self.cache_defer # make sure the cache is ready
for service in self.services_cache:
if service.sender == user_id:
defer.returnValue(service)
return
defer.returnValue(None)
@defer.inlineCallbacks
def get_app_service_by_token(self, token, from_cache=True):
"""Get the application service with the given token.
Args:
token (str): The application service token.
from_cache (bool): True to get this service from the cache, False to
check the database.
Raises:
StoreError if there was a problem retrieving this service.
"""
yield self.cache_defer # make sure the cache is ready
if from_cache:
for service in self.services_cache:
if service.token == token:
defer.returnValue(service)
return
defer.returnValue(None)
# TODO: The from_cache=False impl
# TODO: This should be JOINed with the application_services_regex table.
@defer.inlineCallbacks
def get_app_service_rooms(self, service):
logger.info("get_app_service_rooms -> %s", service)
# TODO stub
yield self.cache_defer
defer.returnValue([RoomsForUser("!foo:bar", service.sender, "join")])
@defer.inlineCallbacks
def _populate_cache(self):
"""Populates the ApplicationServiceCache from the database."""
sql = ("SELECT * FROM application_services LEFT JOIN "
"application_services_regex ON application_services.id = "
"application_services_regex.as_id")
# SQL results in the form:
# [
# {
# 'regex': "something",
# 'url': "something",
# 'namespace': enum,
# 'as_id': 0,
# 'token': "something",
# 'hs_token': "otherthing",
# 'id': 0
# }
# ]
services = {}
results = yield self._execute_and_decode(sql)
for res in results:
as_token = res["token"]
if as_token not in services:
# add the service
services[as_token] = {
"url": res["url"],
"token": as_token,
"hs_token": res["hs_token"],
"sender": res["sender"],
"namespaces": {
ApplicationService.NS_USERS: [],
ApplicationService.NS_ALIASES: [],
ApplicationService.NS_ROOMS: []
}
}
# add the namespace regex if one exists
ns_int = res["namespace"]
if ns_int is None:
continue
try:
services[as_token]["namespaces"][
ApplicationService.NS_LIST[ns_int]].append(
res["regex"]
)
except IndexError:
logger.error("Bad namespace enum '%s'. %s", ns_int, res)
# TODO get last successful txn id f.e. service
for service in services.values():
logger.info("Found application service: %s", service)
self.services_cache.append(ApplicationService(
token=service["token"],
url=service["url"],
namespaces=service["namespaces"],
hs_token=service["hs_token"],
sender=service["sender"]
))
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