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Add a module API to send an HTTP push notification (#15387)

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Co-authored-by: Patrick Cloke <clokep@users.noreply.github.com>
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Mathieu Velten 2023-04-26 21:10:51 +02:00 committed by GitHub
parent e2e9b545ff
commit 247e6a8a78
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3 changed files with 157 additions and 74 deletions
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1
changelog.d/15387.feature Normal file
View file

@ -0,0 +1 @@
Add a module API to send an HTTP push notification.

46
synapse/module_api/__init__.py
View file

@ -105,6 +105,7 @@ from synapse.module_api.callbacks.spamchecker_callbacks import (
USER_MAY_SEND_3PID_INVITE_CALLBACK,
SpamCheckerModuleApiCallbacks,
)
from synapse.push.httppusher import HttpPusher
from synapse.rest.client.login import LoginResponse
from synapse.storage import DataStore
from synapse.storage.background_updates import (
@ -248,6 +249,7 @@ class ModuleApi:
self._registration_handler = hs.get_registration_handler()
self._send_email_handler = hs.get_send_email_handler()
self._push_rules_handler = hs.get_push_rules_handler()
self._pusherpool = hs.get_pusherpool()
self._device_handler = hs.get_device_handler()
self.custom_template_dir = hs.config.server.custom_template_directory
self._callbacks = hs.get_module_api_callbacks()
@ -1225,6 +1227,50 @@ class ModuleApi:
await self._clock.sleep(seconds)
async def send_http_push_notification(
self,
user_id: str,
device_id: Optional[str],
content: JsonDict,
tweaks: Optional[JsonMapping] = None,
default_payload: Optional[JsonMapping] = None,
) -> Dict[str, bool]:
"""Send an HTTP push notification that is forwarded to the registered push gateway
for the specified user/device.
Added in Synapse v1.82.0.
Args:
user_id: The user ID to send the push notification to.
device_id: The device ID of the device where to send the push notification. If `None`,
the notification will be sent to all registered HTTP pushers of the user.
content: A dict of values that will be put in the `notification` field of the push
(cf Push Gateway spec). `devices` field will be overrided if included.
tweaks: A dict of `tweaks` that will be inserted in the `devices` section, cf spec.
default_payload: default payload to add in `devices[0].data.default_payload`.
This will be merged (and override if some matching values already exist there)
with existing `default_payload`.
Returns:
a dict reprensenting the status of the push per device ID
"""
status = {}
if user_id in self._pusherpool.pushers:
for p in self._pusherpool.pushers[user_id].values():
if isinstance(p, HttpPusher) and (
not device_id or p.device_id == device_id
):
res = await p.dispatch_push(content, tweaks, default_payload)
# Check if the push was successful and no pushers were rejected.
sent = res is not False and not res
# This is mainly to accomodate mypy
# device_id should never be empty after the `set_device_id_for_pushers`
# background job has been properly run.
if p.device_id:
status[p.device_id] = sent
return status
async def send_mail(
self,
recipient: str,

184
synapse/push/httppusher.py
View file

@ -14,7 +14,7 @@
# limitations under the License.
import logging
import urllib.parse
from typing import TYPE_CHECKING, Any, Dict, Iterable, List, Optional, Union
from typing import TYPE_CHECKING, Dict, List, Optional, Union
from prometheus_client import Counter
@ -27,6 +27,7 @@ from synapse.logging import opentracing
from synapse.metrics.background_process_metrics import run_as_background_process
from synapse.push import Pusher, PusherConfig, PusherConfigException
from synapse.storage.databases.main.event_push_actions import HttpPushAction
from synapse.types import JsonDict, JsonMapping
from . import push_tools
@ -56,7 +57,7 @@ http_badges_failed_counter = Counter(
)
def tweaks_for_actions(actions: List[Union[str, Dict]]) -> Dict[str, Any]:
def tweaks_for_actions(actions: List[Union[str, Dict]]) -> JsonMapping:
"""
Converts a list of actions into a `tweaks` dict (which can then be passed to
the push gateway).
@ -101,6 +102,7 @@ class HttpPusher(Pusher):
self._storage_controllers = self.hs.get_storage_controllers()
self.app_display_name = pusher_config.app_display_name
self.device_display_name = pusher_config.device_display_name
self.device_id = pusher_config.device_id
self.pushkey_ts = pusher_config.ts
self.data = pusher_config.data
self.backoff_delay = HttpPusher.INITIAL_BACKOFF_SEC
@ -324,7 +326,7 @@ class HttpPusher(Pusher):
event = await self.store.get_event(push_action.event_id, allow_none=True)
if event is None:
return True # It's been redacted
rejected = await self.dispatch_push(event, tweaks, badge)
rejected = await self.dispatch_push_event(event, tweaks, badge)
if rejected is False:
return False
@ -342,9 +344,83 @@ class HttpPusher(Pusher):
await self._pusherpool.remove_pusher(self.app_id, pk, self.user_id)
return True
async def _build_notification_dict(
self, event: EventBase, tweaks: Dict[str, bool], badge: int
) -> Dict[str, Any]:
async def dispatch_push(
self,
content: JsonDict,
tweaks: Optional[JsonMapping] = None,
default_payload: Optional[JsonMapping] = None,
) -> Union[bool, List[str]]:
"""Send a notification to the registered push gateway, with `content` being
the content of the `notification` top property specified in the spec.
Note that the `devices` property will be added with device-specific
information for this pusher.
Args:
content: the content
tweaks: tweaks to add into the `devices` section
default_payload: default payload to add in `devices[0].data.default_payload`.
This will be merged (and override if some matching values already exist there)
with existing `default_payload`.
Returns:
False if an error occured when calling the push gateway, or an array of
rejected push keys otherwise. If this array is empty, the push fully
succeeded.
"""
content = content.copy()
data = self.data_minus_url.copy()
if default_payload:
data.setdefault("default_payload", {}).update(default_payload)
device = {
"app_id": self.app_id,
"pushkey": self.pushkey,
"pushkey_ts": int(self.pushkey_ts / 1000),
"data": data,
}
if tweaks:
device["tweaks"] = tweaks
content["devices"] = [device]
try:
resp = await self.http_client.post_json_get_json(
self.url, {"notification": content}
)
except Exception as e:
logger.warning(
"Failed to push data to %s: %s %s",
self.name,
type(e),
e,
)
return False
rejected = []
if "rejected" in resp:
rejected = resp["rejected"]
return rejected
async def dispatch_push_event(
self,
event: EventBase,
tweaks: JsonMapping,
badge: int,
) -> Union[bool, List[str]]:
"""Send a notification to the registered push gateway by building it
from an event.
Args:
event: the event
tweaks: tweaks to add into the `devices` section, used to decide the
push priority
badge: unread count to send with the push notification
Returns:
False if an error occured when calling the push gateway, or an array of
rejected push keys otherwise. If this array is empty, the push fully
succeeded.
"""
priority = "low"
if (
event.type == EventTypes.Encrypted
@ -358,30 +434,20 @@ class HttpPusher(Pusher):
# This was checked in the __init__, but mypy doesn't seem to know that.
assert self.data is not None
if self.data.get("format") == "event_id_only":
d: Dict[str, Any] = {
"notification": {
"event_id": event.event_id,
"room_id": event.room_id,
"counts": {"unread": badge},
"prio": priority,
"devices": [
{
"app_id": self.app_id,
"pushkey": self.pushkey,
"pushkey_ts": int(self.pushkey_ts / 1000),
"data": self.data_minus_url,
}
],
}
content: JsonDict = {
"event_id": event.event_id,
"room_id": event.room_id,
"counts": {"unread": badge},
"prio": priority,
}
return d
# event_id_only doesn't include the tweaks, so override them.
tweaks = {}
else:
ctx = await push_tools.get_context_for_event(
self._storage_controllers, event, self.user_id
)
ctx = await push_tools.get_context_for_event(
self._storage_controllers, event, self.user_id
)
d = {
"notification": {
content = {
"id": event.event_id, # deprecated: remove soon
"event_id": event.event_id,
"room_id": event.room_id,
@ -392,57 +458,27 @@ class HttpPusher(Pusher):
"unread": badge,
# 'missed_calls': 2
},
"devices": [
{
"app_id": self.app_id,
"pushkey": self.pushkey,
"pushkey_ts": int(self.pushkey_ts / 1000),
"data": self.data_minus_url,
"tweaks": tweaks,
}
],
}
}
if event.type == "m.room.member" and event.is_state():
d["notification"]["membership"] = event.content["membership"]
d["notification"]["user_is_target"] = event.state_key == self.user_id
if self.hs.config.push.push_include_content and event.content:
d["notification"]["content"] = event.content
if event.type == "m.room.member" and event.is_state():
content["membership"] = event.content["membership"]
content["user_is_target"] = event.state_key == self.user_id
if self.hs.config.push.push_include_content and event.content:
content["content"] = event.content
# We no longer send aliases separately, instead, we send the human
# readable name of the room, which may be an alias.
if "sender_display_name" in ctx and len(ctx["sender_display_name"]) > 0:
d["notification"]["sender_display_name"] = ctx["sender_display_name"]
if "name" in ctx and len(ctx["name"]) > 0:
d["notification"]["room_name"] = ctx["name"]
# We no longer send aliases separately, instead, we send the human
# readable name of the room, which may be an alias.
if "sender_display_name" in ctx and len(ctx["sender_display_name"]) > 0:
content["sender_display_name"] = ctx["sender_display_name"]
if "name" in ctx and len(ctx["name"]) > 0:
content["room_name"] = ctx["name"]
return d
res = await self.dispatch_push(content, tweaks)
async def dispatch_push(
self, event: EventBase, tweaks: Dict[str, bool], badge: int
) -> Union[bool, Iterable[str]]:
notification_dict = await self._build_notification_dict(event, tweaks, badge)
if not notification_dict:
return []
try:
resp = await self.http_client.post_json_get_json(
self.url, notification_dict
)
except Exception as e:
logger.warning(
"Failed to push event %s to %s: %s %s",
event.event_id,
self.name,
type(e),
e,
)
return False
rejected = []
if "rejected" in resp:
rejected = resp["rejected"]
if not rejected:
# If the push is successful and none are rejected, update the badge count.
if res is not False and not res:
self.badge_count_last_call = badge
return rejected
return res
async def _send_badge(self, badge: int) -> None:
"""