Split out MessageHandler

1 files changed, 301 insertions, 0 deletions

diff --git a/synapse/handlers/message.py b/synapse/handlers/message.py
new file mode 100644
index 0000000000..32548e66fb
--- /dev/null
+++ b/synapse/handlers/message.py
@@ -0,0 +1,301 @@
+# -*- coding: utf-8 -*-
+# Copyright 2014 matrix.org
+#
+# 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 synapse.api.constants import Membership
+from synapse.api.events.room import RoomTopicEvent
+from synapse.api.errors import RoomError
+from synapse.streams.config import PaginationConfig
+from ._base import BaseRoomHandler
+
+import logging
+
+logger = logging.getLogger(__name__)
+
+
+
+class MessageHandler(BaseRoomHandler):
+
+    def __init__(self, hs):
+        super(MessageHandler, self).__init__(hs)
+        self.hs = hs
+        self.clock = hs.get_clock()
+        self.event_factory = hs.get_event_factory()
+
+    @defer.inlineCallbacks
+    def get_message(self, msg_id=None, room_id=None, sender_id=None,
+                    user_id=None):
+        """ Retrieve a message.
+
+        Args:
+            msg_id (str): The message ID to obtain.
+            room_id (str): The room where the message resides.
+            sender_id (str): The user ID of the user who sent the message.
+            user_id (str): The user ID of the user making this request.
+        Returns:
+            The message, or None if no message exists.
+        Raises:
+            SynapseError if something went wrong.
+        """
+        yield self.auth.check_joined_room(room_id, user_id)
+
+        # Pull out the message from the db
+#        msg = yield self.store.get_message(
+#            room_id=room_id,
+#            msg_id=msg_id,
+#            user_id=sender_id
+#        )
+
+        # TODO (erikj): Once we work out the correct c-s api we need to think on how to do this.
+
+        defer.returnValue(None)
+
+    @defer.inlineCallbacks
+    def send_message(self, event=None, suppress_auth=False, stamp_event=True):
+        """ Send a message.
+
+        Args:
+            event : The message event to store.
+            suppress_auth (bool) : True to suppress auth for this message. This
+            is primarily so the home server can inject messages into rooms at
+            will.
+            stamp_event (bool) : True to stamp event content with server keys.
+        Raises:
+            SynapseError if something went wrong.
+        """
+        if stamp_event:
+            event.content["hsob_ts"] = int(self.clock.time_msec())
+
+        snapshot = yield self.store.snapshot_room(event.room_id, event.user_id)
+
+        if not suppress_auth:
+            yield self.auth.check(event, snapshot, raises=True)
+
+        yield self._on_new_room_event(event, snapshot)
+
+    @defer.inlineCallbacks
+    def get_messages(self, user_id=None, room_id=None, pagin_config=None,
+                     feedback=False):
+        """Get messages in a room.
+
+        Args:
+            user_id (str): The user requesting messages.
+            room_id (str): The room they want messages from.
+            pagin_config (synapse.api.streams.PaginationConfig): The pagination
+            config rules to apply, if any.
+            feedback (bool): True to get compressed feedback with the messages
+        Returns:
+            dict: Pagination API results
+        """
+        yield self.auth.check_joined_room(room_id, user_id)
+
+        data_source = self.hs.get_event_sources().sources["room"]
+
+        if not pagin_config.from_token:
+            pagin_config.from_token = yield self.hs.get_event_sources().get_current_token()
+
+        user = self.hs.parse_userid(user_id)
+
+        events, next_token = yield data_source.get_pagination_rows(
+            user, pagin_config, room_id
+        )
+
+        chunk = {
+            "chunk": [e.get_dict() for e in events],
+            "start": pagin_config.from_token.to_string(),
+            "end": next_token.to_string(),
+        }
+
+        defer.returnValue(chunk)
+
+    @defer.inlineCallbacks
+    def store_room_data(self, event=None, stamp_event=True):
+        """ Stores data for a room.
+
+        Args:
+            event : The room path event
+            stamp_event (bool) : True to stamp event content with server keys.
+        Raises:
+            SynapseError if something went wrong.
+        """
+
+        snapshot = yield self.store.snapshot_room(event.room_id, event.user_id)
+
+        yield self.auth.check(event, snapshot, raises=True)
+
+        if stamp_event:
+            event.content["hsob_ts"] = int(self.clock.time_msec())
+
+        yield self.state_handler.handle_new_event(event, snapshot)
+
+        yield self._on_new_room_event(event, snapshot)
+
+    @defer.inlineCallbacks
+    def get_room_data(self, user_id=None, room_id=None,
+                      event_type=None, state_key="",
+                      public_room_rules=[],
+                      private_room_rules=["join"]):
+        """ Get data from a room.
+
+        Args:
+            event : The room path event
+            public_room_rules : A list of membership states the user can be in,
+            in order to read this data IN A PUBLIC ROOM. An empty list means
+            'any state'.
+            private_room_rules : A list of membership states the user can be
+            in, in order to read this data IN A PRIVATE ROOM. An empty list
+            means 'any state'.
+        Returns:
+            The path data content.
+        Raises:
+            SynapseError if something went wrong.
+        """
+        if event_type == RoomTopicEvent.TYPE:
+            # anyone invited/joined can read the topic
+            private_room_rules = ["invite", "join"]
+
+        # does this room exist
+        room = yield self.store.get_room(room_id)
+        if not room:
+            raise RoomError(403, "Room does not exist.")
+
+        # does this user exist in this room
+        member = yield self.store.get_room_member(
+            room_id=room_id,
+            user_id="" if not user_id else user_id)
+
+        member_state = member.membership if member else None
+
+        if room.is_public and public_room_rules:
+            # make sure the user meets public room rules
+            if member_state not in public_room_rules:
+                raise RoomError(403, "Member does not meet public room rules.")
+        elif not room.is_public and private_room_rules:
+            # make sure the user meets private room rules
+            if member_state not in private_room_rules:
+                raise RoomError(
+                    403, "Member does not meet private room rules.")
+
+        data = yield self.store.get_current_state(
+            room_id, event_type, state_key
+        )
+        defer.returnValue(data)
+
+    @defer.inlineCallbacks
+    def get_feedback(self, event_id):
+        # yield self.auth.check_joined_room(room_id, user_id)
+
+        # Pull out the feedback from the db
+        fb = yield self.store.get_feedback(event_id)
+
+        if fb:
+            defer.returnValue(fb)
+        defer.returnValue(None)
+
+    @defer.inlineCallbacks
+    def send_feedback(self, event, stamp_event=True):
+        if stamp_event:
+            event.content["hsob_ts"] = int(self.clock.time_msec())
+
+        snapshot = yield self.store.snapshot_room(event.room_id, event.user_id)
+
+        yield self.auth.check(event, snapshot, raises=True)
+
+        # store message in db
+        yield self._on_new_room_event(event, snapshot)
+
+    @defer.inlineCallbacks
+    def snapshot_all_rooms(self, user_id=None, pagin_config=None,
+                           feedback=False):
+        """Retrieve a snapshot of all rooms the user is invited or has joined.
+
+        This snapshot may include messages for all rooms where the user is
+        joined, depending on the pagination config.
+
+        Args:
+            user_id (str): The ID of the user making the request.
+            pagin_config (synapse.api.streams.PaginationConfig): The pagination
+            config used to determine how many messages *PER ROOM* to return.
+            feedback (bool): True to get feedback along with these messages.
+        Returns:
+            A list of dicts with "room_id" and "membership" keys for all rooms
+            the user is currently invited or joined in on. Rooms where the user
+            is joined on, may return a "messages" key with messages, depending
+            on the specified PaginationConfig.
+        """
+        room_list = yield self.store.get_rooms_for_user_where_membership_is(
+            user_id=user_id,
+            membership_list=[Membership.INVITE, Membership.JOIN]
+        )
+
+        user = self.hs.parse_userid(user_id)
+
+        rooms_ret = []
+
+        now_token = yield self.hs.get_event_sources().get_current_token()
+
+        presence_stream = self.hs.get_event_sources().sources["presence"]
+        pagination_config = PaginationConfig(from_token=now_token)
+        presence, _ = yield presence_stream.get_pagination_rows(
+            user, pagination_config, None
+        )
+
+        limit = pagin_config.limit
+        if not limit:
+            limit = 10
+
+        for event in room_list:
+            d = {
+                "room_id": event.room_id,
+                "membership": event.membership,
+            }
+
+            if event.membership == Membership.INVITE:
+                d["inviter"] = event.user_id
+
+            rooms_ret.append(d)
+
+            if event.membership != Membership.JOIN:
+                continue
+            try:
+                messages, token = yield self.store.get_recent_events_for_room(
+                    event.room_id,
+                    limit=limit,
+                    end_token=now_token.events_key,
+                )
+
+                d["messages"] = {
+                    "chunk": [m.get_dict() for m in messages],
+                    "start": token[0],
+                    "end": token[1],
+                }
+
+                current_state = yield self.store.get_current_state(
+                    event.room_id
+                )
+                d["state"] = [c.get_dict() for c in current_state]
+            except:
+                logger.exception("Failed to get snapshot")
+
+        ret = {
+            "rooms": rooms_ret,
+            "presence": presence,
+            "end": now_token.to_string()
+        }
+
+        defer.returnValue(ret)
+
+