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Implement regex checks for app services.

Expose handler.get_services_for_event which manages the checks for all
services.
This commit is contained in:
Kegan Dougal 2015-02-03 11:26:33 +00:00
parent 9ff349a3cb
commit 197f3ea4ba
2 changed files with 67 additions and 29 deletions

View file

@ -34,9 +34,11 @@ class ApplicationServicesHandler(BaseHandler):
logger.info("Register -> %s", app_service) logger.info("Register -> %s", app_service)
# check the token is recognised # check the token is recognised
try: try:
stored_service = yield self.store.get_app_service(app_service.token) stored_service = yield self.store.get_app_service_by_token(
app_service.token
)
if not stored_service: if not stored_service:
raise StoreError(404, "Application Service Not found") raise StoreError(404, "Application service not found")
except StoreError: except StoreError:
raise SynapseError( raise SynapseError(
403, "Unrecognised application services token. " 403, "Unrecognised application services token. "
@ -50,6 +52,25 @@ class ApplicationServicesHandler(BaseHandler):
logger.info("Unregister as_token=%s", token) logger.info("Unregister as_token=%s", token)
yield self.store.unregister_app_service(token) yield self.store.unregister_app_service(token)
def get_services_for_event(self, event):
"""Retrieve a list of application services interested in this event.
Args:
event(Event): The event to check.
Returns:
list<ApplicationService>: A list of services interested in this
event based on the service regex.
"""
# We need to know the aliases associated with this event.room_id, if any
alias_list = [] # TODO
interested_list = [
s for s in self.store.get_app_services() if (
s.is_interested(event, alias_list)
)
]
return interested_list
def notify_interested_services(self, event): def notify_interested_services(self, event):
"""Notifies (pushes) all application services interested in this event. """Notifies (pushes) all application services interested in this event.

View file

@ -13,8 +13,10 @@
# See the License for the specific language governing permissions and # See the License for the specific language governing permissions and
# limitations under the License. # limitations under the License.
import logging import logging
import re
from twisted.internet import defer from twisted.internet import defer
from synapse.api.constants import EventTypes
from synapse.api.errors import StoreError from synapse.api.errors import StoreError
from ._base import SQLBaseStore from ._base import SQLBaseStore
@ -27,6 +29,7 @@ namespace_enum = [
"rooms" # 2 "rooms" # 2
] ]
# XXX: This feels like it should belong in a "models" module, not storage. # XXX: This feels like it should belong in a "models" module, not storage.
class ApplicationService(object): class ApplicationService(object):
"""Defines an application service. """Defines an application service.
@ -37,9 +40,9 @@ class ApplicationService(object):
def __init__(self, token, url=None, namespaces=None): def __init__(self, token, url=None, namespaces=None):
self.token = token self.token = token
self.url = url self.url = url
self.namespaces = self._get_namespaces(namespaces) self.namespaces = self._check_namespaces(namespaces)
def _get_namespaces(self, namespaces): def _check_namespaces(self, namespaces):
# Sanity check that it is of the form: # Sanity check that it is of the form:
# { # {
# users: ["regex",...], # users: ["regex",...],
@ -57,22 +60,50 @@ class ApplicationService(object):
raise ValueError("Expected string regex for ns '%s'", ns) raise ValueError("Expected string regex for ns '%s'", ns)
return namespaces return namespaces
def is_interested(self, event): def _matches_regex(self, test_string, namespace_key):
for regex in self.namespaces[namespace_key]:
if re.match(regex, test_string):
return True
return False
def _matches_user(self, event):
if (hasattr(event, "user_id") and
self._matches_regex(event.user_id, "users")):
return True
# also check m.room.member state key
if (hasattr(event, "type") and event.type == EventTypes.Member
and hasattr(event, "state_key")
and self._matches_regex(event.state_key, "users")):
return True
return False
def _matches_room_id(self, event):
if hasattr(event, "room_id"):
return self._matches_regex(event.room_id, "rooms")
return False
def _matches_aliases(self, event, alias_list):
for alias in alias_list:
if self._matches_regex(alias, "aliases"):
return True
return False
def is_interested(self, event, aliases_for_event=None):
"""Check if this service is interested in this event. """Check if this service is interested in this event.
Args: Args:
event(Event): The event to check. event(Event): The event to check.
aliases_for_event(list): A list of all the known room aliases for
this event.
Returns: Returns:
bool: True if this service would like to know about this event. bool: True if this service would like to know about this event.
""" """
# NB: This does not check room alias regex matches because that requires if aliases_for_event is None:
# more context that an Event can provide. Room alias matches are checked aliases_for_event = []
# in the ApplicationServiceHandler.
# TODO check if event.room_id regex matches return (self._matches_user(event)
# TODO check if event.user_id regex matches (or m.room.member state_key) or self._matches_aliases(event, aliases_for_event)
or self._matches_room_id(event))
return True
def __str__(self): def __str__(self):
return "ApplicationService: %s" % (self.__dict__,) return "ApplicationService: %s" % (self.__dict__,)
@ -89,20 +120,6 @@ class ApplicationServiceCache(object):
def __init__(self): def __init__(self):
self.services = [] self.services = []
def get_services_for_event(self, event):
"""Retrieve a list of application services interested in this event.
Args:
event(Event): The event to check.
Returns:
list<ApplicationService>: A list of services interested in this
event based on the service regex.
"""
interested_list = [
s for s in self.services if s.is_event_claimed(event)
]
return interested_list
class ApplicationServiceStore(SQLBaseStore): class ApplicationServiceStore(SQLBaseStore):
@ -217,10 +234,10 @@ class ApplicationServiceStore(SQLBaseStore):
if res: if res:
return res[0] return res[0]
def get_services_for_event(self, event): def get_app_services(self):
return self.cache.get_services_for_event(event) return self.cache.services
def get_app_service(self, token, from_cache=True): def get_app_service_by_token(self, token, from_cache=True):
"""Get the application service with the given token. """Get the application service with the given token.
Args: Args: