diff options
Diffstat (limited to 'synapse/storage/appservice.py')
| -rw-r--r-- | synapse/storage/appservice.py | 457 |
1 files changed, 294 insertions, 163 deletions
diff --git a/synapse/storage/appservice.py b/synapse/storage/appservice.py index 850676ce6c..f8cbb3f323 100644 --- a/synapse/storage/appservice.py +++ b/synapse/storage/appservice.py @@ -13,154 +13,35 @@ # See the License for the specific language governing permissions and # limitations under the License. import logging -import simplejson +import urllib +import yaml from simplejson import JSONDecodeError +import simplejson as json from twisted.internet import defer from synapse.api.constants import Membership -from synapse.api.errors import StoreError -from synapse.appservice import ApplicationService +from synapse.appservice import ApplicationService, AppServiceTransaction from synapse.storage.roommember import RoomsForUser +from synapse.types import UserID from ._base import SQLBaseStore logger = logging.getLogger(__name__) -def log_failure(failure): - logger.error("Failed to detect application services: %s", failure.value) - logger.error(failure.getTraceback()) - - class ApplicationServiceStore(SQLBaseStore): def __init__(self, hs): super(ApplicationServiceStore, self).__init__(hs) + self.hostname = hs.hostname self.services_cache = [] - self.cache_defer = self._populate_cache() - self.cache_defer.addErrback(log_failure) - - @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,) + self._populate_appservice_cache( + hs.config.app_service_config_files ) - 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_obj in service.namespaces[ns_str]: - txn.execute( - "INSERT INTO application_services_regex(" - "as_id, namespace, regex) values(?,?,?)", - (as_id, ns_int, simplejson.dumps(regex_obj)) - ) - 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) + return defer.succeed(self.services_cache) - @defer.inlineCallbacks def get_app_service_by_user_id(self, user_id): """Retrieve an application service from their user ID. @@ -174,37 +55,23 @@ class ApplicationServiceStore(SQLBaseStore): Returns: synapse.appservice.ApplicationService or None. """ - - 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) + return defer.succeed(service) + return defer.succeed(None) - @defer.inlineCallbacks - def get_app_service_by_token(self, token, from_cache=True): + def get_app_service_by_token(self, token): """Get the application service with the given appservice 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. + Returns: + synapse.appservice.ApplicationService or None. """ - 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. + for service in self.services_cache: + if service.token == token: + return defer.succeed(service) + return defer.succeed(None) def get_app_service_rooms(self, service): """Get a list of RoomsForUser for this application service. @@ -277,12 +144,7 @@ class ApplicationServiceStore(SQLBaseStore): return rooms_for_user_matching_user_id - @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") + def _parse_services_dict(self, results): # SQL results in the form: # [ # { @@ -296,12 +158,14 @@ class ApplicationServiceStore(SQLBaseStore): # } # ] services = {} - results = yield self._execute_and_decode("_populate_cache", sql) for res in results: as_token = res["token"] + if as_token is None: + continue if as_token not in services: # add the service services[as_token] = { + "id": res["id"], "url": res["url"], "token": as_token, "hs_token": res["hs_token"], @@ -319,20 +183,287 @@ class ApplicationServiceStore(SQLBaseStore): try: services[as_token]["namespaces"][ ApplicationService.NS_LIST[ns_int]].append( - simplejson.loads(res["regex"]) + json.loads(res["regex"]) ) except IndexError: logger.error("Bad namespace enum '%s'. %s", ns_int, res) except JSONDecodeError: logger.error("Bad regex object '%s'", res["regex"]) - # TODO get last successful txn id f.e. service + service_list = [] for service in services.values(): - logger.info("Found application service: %s", service) - self.services_cache.append(ApplicationService( + service_list.append(ApplicationService( token=service["token"], url=service["url"], namespaces=service["namespaces"], hs_token=service["hs_token"], - sender=service["sender"] + sender=service["sender"], + id=service["id"] )) + return service_list + + def _load_appservice(self, as_info): + required_string_fields = [ + "url", "as_token", "hs_token", "sender_localpart" + ] + for field in required_string_fields: + if not isinstance(as_info.get(field), basestring): + raise KeyError("Required string field: '%s'", field) + + localpart = as_info["sender_localpart"] + if urllib.quote(localpart) != localpart: + raise ValueError( + "sender_localpart needs characters which are not URL encoded." + ) + user = UserID(localpart, self.hostname) + user_id = user.to_string() + + # namespace checks + if not isinstance(as_info.get("namespaces"), dict): + raise KeyError("Requires 'namespaces' object.") + for ns in ApplicationService.NS_LIST: + # specific namespaces are optional + if ns in as_info["namespaces"]: + # expect a list of dicts with exclusive and regex keys + for regex_obj in as_info["namespaces"][ns]: + if not isinstance(regex_obj, dict): + raise ValueError( + "Expected namespace entry in %s to be an object," + " but got %s", ns, regex_obj + ) + if not isinstance(regex_obj.get("regex"), basestring): + raise ValueError( + "Missing/bad type 'regex' key in %s", regex_obj + ) + if not isinstance(regex_obj.get("exclusive"), bool): + raise ValueError( + "Missing/bad type 'exclusive' key in %s", regex_obj + ) + return ApplicationService( + token=as_info["as_token"], + url=as_info["url"], + namespaces=as_info["namespaces"], + hs_token=as_info["hs_token"], + sender=user_id, + id=as_info["as_token"] # the token is the only unique thing here + ) + + def _populate_appservice_cache(self, config_files): + """Populates a cache of Application Services from the config files.""" + if not isinstance(config_files, list): + logger.warning( + "Expected %s to be a list of AS config files.", config_files + ) + return + + for config_file in config_files: + try: + with open(config_file, 'r') as f: + appservice = self._load_appservice(yaml.load(f)) + logger.info("Loaded application service: %s", appservice) + self.services_cache.append(appservice) + except Exception as e: + logger.error("Failed to load appservice from '%s'", config_file) + logger.exception(e) + + +class ApplicationServiceTransactionStore(SQLBaseStore): + + def __init__(self, hs): + super(ApplicationServiceTransactionStore, self).__init__(hs) + + @defer.inlineCallbacks + def get_appservices_by_state(self, state): + """Get a list of application services based on their state. + + Args: + state(ApplicationServiceState): The state to filter on. + Returns: + A Deferred which resolves to a list of ApplicationServices, which + may be empty. + """ + results = yield self._simple_select_list( + "application_services_state", + dict(state=state), + ["as_id"] + ) + # NB: This assumes this class is linked with ApplicationServiceStore + as_list = yield self.get_app_services() + services = [] + + for res in results: + for service in as_list: + if service.id == res["as_id"]: + services.append(service) + defer.returnValue(services) + + @defer.inlineCallbacks + def get_appservice_state(self, service): + """Get the application service state. + + Args: + service(ApplicationService): The service whose state to set. + Returns: + A Deferred which resolves to ApplicationServiceState. + """ + result = yield self._simple_select_one( + "application_services_state", + dict(as_id=service.id), + ["state"], + allow_none=True + ) + if result: + defer.returnValue(result.get("state")) + return + defer.returnValue(None) + + def set_appservice_state(self, service, state): + """Set the application service state. + + Args: + service(ApplicationService): The service whose state to set. + state(ApplicationServiceState): The connectivity state to apply. + Returns: + A Deferred which resolves when the state was set successfully. + """ + return self._simple_upsert( + "application_services_state", + dict(as_id=service.id), + dict(state=state) + ) + + def create_appservice_txn(self, service, events): + """Atomically creates a new transaction for this application service + with the given list of events. + + Args: + service(ApplicationService): The service who the transaction is for. + events(list<Event>): A list of events to put in the transaction. + Returns: + AppServiceTransaction: A new transaction. + """ + return self.runInteraction( + "create_appservice_txn", + self._create_appservice_txn, + service, events + ) + + def _create_appservice_txn(self, txn, service, events): + # work out new txn id (highest txn id for this service += 1) + # The highest id may be the last one sent (in which case it is last_txn) + # or it may be the highest in the txns list (which are waiting to be/are + # being sent) + last_txn_id = self._get_last_txn(txn, service.id) + + result = txn.execute( + "SELECT MAX(txn_id) FROM application_services_txns WHERE as_id=?", + (service.id,) + ) + highest_txn_id = result.fetchone()[0] + if highest_txn_id is None: + highest_txn_id = 0 + + new_txn_id = max(highest_txn_id, last_txn_id) + 1 + + # Insert new txn into txn table + event_ids = [e.event_id for e in events] + txn.execute( + "INSERT INTO application_services_txns(as_id, txn_id, event_ids) " + "VALUES(?,?,?)", + (service.id, new_txn_id, json.dumps(event_ids)) + ) + return AppServiceTransaction( + service=service, id=new_txn_id, events=events + ) + + def complete_appservice_txn(self, txn_id, service): + """Completes an application service transaction. + + Args: + txn_id(str): The transaction ID being completed. + service(ApplicationService): The application service which was sent + this transaction. + Returns: + A Deferred which resolves if this transaction was stored + successfully. + """ + return self.runInteraction( + "complete_appservice_txn", + self._complete_appservice_txn, + txn_id, service + ) + + def _complete_appservice_txn(self, txn, txn_id, service): + txn_id = int(txn_id) + + # Debugging query: Make sure the txn being completed is EXACTLY +1 from + # what was there before. If it isn't, we've got problems (e.g. the AS + # has probably missed some events), so whine loudly but still continue, + # since it shouldn't fail completion of the transaction. + last_txn_id = self._get_last_txn(txn, service.id) + if (last_txn_id + 1) != txn_id: + logger.error( + "appservice: Completing a transaction which has an ID > 1 from " + "the last ID sent to this AS. We've either dropped events or " + "sent it to the AS out of order. FIX ME. last_txn=%s " + "completing_txn=%s service_id=%s", last_txn_id, txn_id, + service.id + ) + + # Set current txn_id for AS to 'txn_id' + self._simple_upsert_txn( + txn, "application_services_state", dict(as_id=service.id), + dict(last_txn=txn_id) + ) + + # Delete txn + self._simple_delete_txn( + txn, "application_services_txns", + dict(txn_id=txn_id, as_id=service.id) + ) + + def get_oldest_unsent_txn(self, service): + """Get the oldest transaction which has not been sent for this + service. + + Args: + service(ApplicationService): The app service to get the oldest txn. + Returns: + A Deferred which resolves to an AppServiceTransaction or + None. + """ + return self.runInteraction( + "get_oldest_unsent_appservice_txn", + self._get_oldest_unsent_txn, + service + ) + + def _get_oldest_unsent_txn(self, txn, service): + # Monotonically increasing txn ids, so just select the smallest + # one in the txns table (we delete them when they are sent) + result = txn.execute( + "SELECT MIN(txn_id), * FROM application_services_txns WHERE as_id=?", + (service.id,) + ) + entry = self.cursor_to_dict(result)[0] + if not entry or entry["txn_id"] is None: + # the min(txn_id) part will force a row, so entry may not be None + return None + + event_ids = json.loads(entry["event_ids"]) + events = self._get_events_txn(txn, event_ids) + + return AppServiceTransaction( + service=service, id=entry["txn_id"], events=events + ) + + def _get_last_txn(self, txn, service_id): + result = txn.execute( + "SELECT last_txn FROM application_services_state WHERE as_id=?", + (service_id,) + ) + last_txn_id = result.fetchone() + if last_txn_id is None or last_txn_id[0] is None: # no row exists + return 0 + else: + return int(last_txn_id[0]) # select 'last_txn' col |