From 4cff617df1ba6f241fee6957cc44859f57edcc0e Mon Sep 17 00:00:00 2001 From: Erik Johnston Date: Wed, 25 Mar 2020 14:54:01 +0000 Subject: Move catchup of replication streams to worker. (#7024) This changes the replication protocol so that the server does not send down `RDATA` for rows that happened before the client connected. Instead, the server will send a `POSITION` and clients then query the database (or master out of band) to get up to date. --- synapse/server.py | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'synapse/server.py') diff --git a/synapse/server.py b/synapse/server.py index 1b980371de..9426eb1672 100644 --- a/synapse/server.py +++ b/synapse/server.py @@ -85,6 +85,7 @@ from synapse.http.matrixfederationclient import MatrixFederationHttpClient from synapse.notifier import Notifier from synapse.push.action_generator import ActionGenerator from synapse.push.pusherpool import PusherPool +from synapse.replication.tcp.resource import ReplicationStreamer from synapse.rest.media.v1.media_repository import ( MediaRepository, MediaRepositoryResource, @@ -199,6 +200,7 @@ class HomeServer(object): "saml_handler", "event_client_serializer", "storage", + "replication_streamer", ] REQUIRED_ON_MASTER_STARTUP = ["user_directory_handler", "stats_handler"] @@ -536,6 +538,9 @@ class HomeServer(object): def build_storage(self) -> Storage: return Storage(self, self.datastores) + def build_replication_streamer(self) -> ReplicationStreamer: + return ReplicationStreamer(self) + def remove_pusher(self, app_id, push_key, user_id): return self.get_pusherpool().remove_pusher(app_id, push_key, user_id) -- cgit 1.5.1 From e8e2ddb60ae11db488f159901d918cb159695912 Mon Sep 17 00:00:00 2001 From: Dirk Klimpel <5740567+dklimpel@users.noreply.github.com> Date: Thu, 26 Mar 2020 17:51:13 +0100 Subject: Allow server admins to define and enforce a password policy (MSC2000). (#7118) --- changelog.d/7118.feature | 1 + docs/sample_config.yaml | 35 ++++ synapse/api/errors.py | 21 +++ synapse/config/password.py | 39 +++++ synapse/handlers/password_policy.py | 93 +++++++++++ synapse/handlers/set_password.py | 2 + synapse/rest/__init__.py | 2 + synapse/rest/client/v2_alpha/password_policy.py | 58 +++++++ synapse/rest/client/v2_alpha/register.py | 2 + synapse/server.py | 5 + tests/rest/client/v2_alpha/test_password_policy.py | 179 +++++++++++++++++++++ 11 files changed, 437 insertions(+) create mode 100644 changelog.d/7118.feature create mode 100644 synapse/handlers/password_policy.py create mode 100644 synapse/rest/client/v2_alpha/password_policy.py create mode 100644 tests/rest/client/v2_alpha/test_password_policy.py (limited to 'synapse/server.py') diff --git a/changelog.d/7118.feature b/changelog.d/7118.feature new file mode 100644 index 0000000000..5cbfd98160 --- /dev/null +++ b/changelog.d/7118.feature @@ -0,0 +1 @@ +Allow server admins to define and enforce a password policy (MSC2000). \ No newline at end of file diff --git a/docs/sample_config.yaml b/docs/sample_config.yaml index 2ef83646b3..1a1d061759 100644 --- a/docs/sample_config.yaml +++ b/docs/sample_config.yaml @@ -1482,6 +1482,41 @@ password_config: # #pepper: "EVEN_MORE_SECRET" + # Define and enforce a password policy. Each parameter is optional. + # This is an implementation of MSC2000. + # + policy: + # Whether to enforce the password policy. + # Defaults to 'false'. + # + #enabled: true + + # Minimum accepted length for a password. + # Defaults to 0. + # + #minimum_length: 15 + + # Whether a password must contain at least one digit. + # Defaults to 'false'. + # + #require_digit: true + + # Whether a password must contain at least one symbol. + # A symbol is any character that's not a number or a letter. + # Defaults to 'false'. + # + #require_symbol: true + + # Whether a password must contain at least one lowercase letter. + # Defaults to 'false'. + # + #require_lowercase: true + + # Whether a password must contain at least one lowercase letter. + # Defaults to 'false'. + # + #require_uppercase: true + # Configuration for sending emails from Synapse. # diff --git a/synapse/api/errors.py b/synapse/api/errors.py index 616942b057..11da016ac5 100644 --- a/synapse/api/errors.py +++ b/synapse/api/errors.py @@ -64,6 +64,13 @@ class Codes(object): INCOMPATIBLE_ROOM_VERSION = "M_INCOMPATIBLE_ROOM_VERSION" WRONG_ROOM_KEYS_VERSION = "M_WRONG_ROOM_KEYS_VERSION" EXPIRED_ACCOUNT = "ORG_MATRIX_EXPIRED_ACCOUNT" + PASSWORD_TOO_SHORT = "M_PASSWORD_TOO_SHORT" + PASSWORD_NO_DIGIT = "M_PASSWORD_NO_DIGIT" + PASSWORD_NO_UPPERCASE = "M_PASSWORD_NO_UPPERCASE" + PASSWORD_NO_LOWERCASE = "M_PASSWORD_NO_LOWERCASE" + PASSWORD_NO_SYMBOL = "M_PASSWORD_NO_SYMBOL" + PASSWORD_IN_DICTIONARY = "M_PASSWORD_IN_DICTIONARY" + WEAK_PASSWORD = "M_WEAK_PASSWORD" INVALID_SIGNATURE = "M_INVALID_SIGNATURE" USER_DEACTIVATED = "M_USER_DEACTIVATED" BAD_ALIAS = "M_BAD_ALIAS" @@ -439,6 +446,20 @@ class IncompatibleRoomVersionError(SynapseError): return cs_error(self.msg, self.errcode, room_version=self._room_version) +class PasswordRefusedError(SynapseError): + """A password has been refused, either during password reset/change or registration. + """ + + def __init__( + self, + msg="This password doesn't comply with the server's policy", + errcode=Codes.WEAK_PASSWORD, + ): + super(PasswordRefusedError, self).__init__( + code=400, msg=msg, errcode=errcode, + ) + + class RequestSendFailed(RuntimeError): """Sending a HTTP request over federation failed due to not being able to talk to the remote server for some reason. diff --git a/synapse/config/password.py b/synapse/config/password.py index 2a634ac751..9c0ea8c30a 100644 --- a/synapse/config/password.py +++ b/synapse/config/password.py @@ -31,6 +31,10 @@ class PasswordConfig(Config): self.password_localdb_enabled = password_config.get("localdb_enabled", True) self.password_pepper = password_config.get("pepper", "") + # Password policy + self.password_policy = password_config.get("policy") or {} + self.password_policy_enabled = self.password_policy.get("enabled", False) + def generate_config_section(self, config_dir_path, server_name, **kwargs): return """\ password_config: @@ -48,4 +52,39 @@ class PasswordConfig(Config): # DO NOT CHANGE THIS AFTER INITIAL SETUP! # #pepper: "EVEN_MORE_SECRET" + + # Define and enforce a password policy. Each parameter is optional. + # This is an implementation of MSC2000. + # + policy: + # Whether to enforce the password policy. + # Defaults to 'false'. + # + #enabled: true + + # Minimum accepted length for a password. + # Defaults to 0. + # + #minimum_length: 15 + + # Whether a password must contain at least one digit. + # Defaults to 'false'. + # + #require_digit: true + + # Whether a password must contain at least one symbol. + # A symbol is any character that's not a number or a letter. + # Defaults to 'false'. + # + #require_symbol: true + + # Whether a password must contain at least one lowercase letter. + # Defaults to 'false'. + # + #require_lowercase: true + + # Whether a password must contain at least one lowercase letter. + # Defaults to 'false'. + # + #require_uppercase: true """ diff --git a/synapse/handlers/password_policy.py b/synapse/handlers/password_policy.py new file mode 100644 index 0000000000..d06b110269 --- /dev/null +++ b/synapse/handlers/password_policy.py @@ -0,0 +1,93 @@ +# -*- coding: utf-8 -*- +# Copyright 2019 New Vector Ltd +# Copyright 2019 The Matrix.org Foundation C.I.C. +# +# 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 +import re + +from synapse.api.errors import Codes, PasswordRefusedError + +logger = logging.getLogger(__name__) + + +class PasswordPolicyHandler(object): + def __init__(self, hs): + self.policy = hs.config.password_policy + self.enabled = hs.config.password_policy_enabled + + # Regexps for the spec'd policy parameters. + self.regexp_digit = re.compile("[0-9]") + self.regexp_symbol = re.compile("[^a-zA-Z0-9]") + self.regexp_uppercase = re.compile("[A-Z]") + self.regexp_lowercase = re.compile("[a-z]") + + def validate_password(self, password): + """Checks whether a given password complies with the server's policy. + + Args: + password (str): The password to check against the server's policy. + + Raises: + PasswordRefusedError: The password doesn't comply with the server's policy. + """ + + if not self.enabled: + return + + minimum_accepted_length = self.policy.get("minimum_length", 0) + if len(password) < minimum_accepted_length: + raise PasswordRefusedError( + msg=( + "The password must be at least %d characters long" + % minimum_accepted_length + ), + errcode=Codes.PASSWORD_TOO_SHORT, + ) + + if ( + self.policy.get("require_digit", False) + and self.regexp_digit.search(password) is None + ): + raise PasswordRefusedError( + msg="The password must include at least one digit", + errcode=Codes.PASSWORD_NO_DIGIT, + ) + + if ( + self.policy.get("require_symbol", False) + and self.regexp_symbol.search(password) is None + ): + raise PasswordRefusedError( + msg="The password must include at least one symbol", + errcode=Codes.PASSWORD_NO_SYMBOL, + ) + + if ( + self.policy.get("require_uppercase", False) + and self.regexp_uppercase.search(password) is None + ): + raise PasswordRefusedError( + msg="The password must include at least one uppercase letter", + errcode=Codes.PASSWORD_NO_UPPERCASE, + ) + + if ( + self.policy.get("require_lowercase", False) + and self.regexp_lowercase.search(password) is None + ): + raise PasswordRefusedError( + msg="The password must include at least one lowercase letter", + errcode=Codes.PASSWORD_NO_LOWERCASE, + ) diff --git a/synapse/handlers/set_password.py b/synapse/handlers/set_password.py index 12657ca698..7d1263caf2 100644 --- a/synapse/handlers/set_password.py +++ b/synapse/handlers/set_password.py @@ -32,6 +32,7 @@ class SetPasswordHandler(BaseHandler): super(SetPasswordHandler, self).__init__(hs) self._auth_handler = hs.get_auth_handler() self._device_handler = hs.get_device_handler() + self._password_policy_handler = hs.get_password_policy_handler() @defer.inlineCallbacks def set_password( @@ -44,6 +45,7 @@ class SetPasswordHandler(BaseHandler): if not self.hs.config.password_localdb_enabled: raise SynapseError(403, "Password change disabled", errcode=Codes.FORBIDDEN) + self._password_policy_handler.validate_password(new_password) password_hash = yield self._auth_handler.hash(new_password) try: diff --git a/synapse/rest/__init__.py b/synapse/rest/__init__.py index 4a1fc2ec2b..46e458e95b 100644 --- a/synapse/rest/__init__.py +++ b/synapse/rest/__init__.py @@ -41,6 +41,7 @@ from synapse.rest.client.v2_alpha import ( keys, notifications, openid, + password_policy, read_marker, receipts, register, @@ -118,6 +119,7 @@ class ClientRestResource(JsonResource): capabilities.register_servlets(hs, client_resource) account_validity.register_servlets(hs, client_resource) relations.register_servlets(hs, client_resource) + password_policy.register_servlets(hs, client_resource) # moving to /_synapse/admin synapse.rest.admin.register_servlets_for_client_rest_resource( diff --git a/synapse/rest/client/v2_alpha/password_policy.py b/synapse/rest/client/v2_alpha/password_policy.py new file mode 100644 index 0000000000..968403cca4 --- /dev/null +++ b/synapse/rest/client/v2_alpha/password_policy.py @@ -0,0 +1,58 @@ +# -*- coding: utf-8 -*- +# Copyright 2019 The Matrix.org Foundation C.I.C. +# +# 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 synapse.http.servlet import RestServlet + +from ._base import client_patterns + +logger = logging.getLogger(__name__) + + +class PasswordPolicyServlet(RestServlet): + PATTERNS = client_patterns("/password_policy$") + + def __init__(self, hs): + """ + Args: + hs (synapse.server.HomeServer): server + """ + super(PasswordPolicyServlet, self).__init__() + + self.policy = hs.config.password_policy + self.enabled = hs.config.password_policy_enabled + + def on_GET(self, request): + if not self.enabled or not self.policy: + return (200, {}) + + policy = {} + + for param in [ + "minimum_length", + "require_digit", + "require_symbol", + "require_lowercase", + "require_uppercase", + ]: + if param in self.policy: + policy["m.%s" % param] = self.policy[param] + + return (200, policy) + + +def register_servlets(hs, http_server): + PasswordPolicyServlet(hs).register(http_server) diff --git a/synapse/rest/client/v2_alpha/register.py b/synapse/rest/client/v2_alpha/register.py index 6963d79310..66fc8ec179 100644 --- a/synapse/rest/client/v2_alpha/register.py +++ b/synapse/rest/client/v2_alpha/register.py @@ -373,6 +373,7 @@ class RegisterRestServlet(RestServlet): self.room_member_handler = hs.get_room_member_handler() self.macaroon_gen = hs.get_macaroon_generator() self.ratelimiter = hs.get_registration_ratelimiter() + self.password_policy_handler = hs.get_password_policy_handler() self.clock = hs.get_clock() self._registration_flows = _calculate_registration_flows( @@ -420,6 +421,7 @@ class RegisterRestServlet(RestServlet): or len(body["password"]) > 512 ): raise SynapseError(400, "Invalid password") + self.password_policy_handler.validate_password(body["password"]) desired_username = None if "username" in body: diff --git a/synapse/server.py b/synapse/server.py index 9426eb1672..d0d80e8ac5 100644 --- a/synapse/server.py +++ b/synapse/server.py @@ -66,6 +66,7 @@ from synapse.handlers.groups_local import GroupsLocalHandler, GroupsLocalWorkerH from synapse.handlers.initial_sync import InitialSyncHandler from synapse.handlers.message import EventCreationHandler, MessageHandler from synapse.handlers.pagination import PaginationHandler +from synapse.handlers.password_policy import PasswordPolicyHandler from synapse.handlers.presence import PresenceHandler from synapse.handlers.profile import BaseProfileHandler, MasterProfileHandler from synapse.handlers.read_marker import ReadMarkerHandler @@ -199,6 +200,7 @@ class HomeServer(object): "account_validity_handler", "saml_handler", "event_client_serializer", + "password_policy_handler", "storage", "replication_streamer", ] @@ -535,6 +537,9 @@ class HomeServer(object): def build_event_client_serializer(self): return EventClientSerializer(self) + def build_password_policy_handler(self): + return PasswordPolicyHandler(self) + def build_storage(self) -> Storage: return Storage(self, self.datastores) diff --git a/tests/rest/client/v2_alpha/test_password_policy.py b/tests/rest/client/v2_alpha/test_password_policy.py new file mode 100644 index 0000000000..c57072f50c --- /dev/null +++ b/tests/rest/client/v2_alpha/test_password_policy.py @@ -0,0 +1,179 @@ +# -*- coding: utf-8 -*- +# Copyright 2019 The Matrix.org Foundation C.I.C. +# +# 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 json + +from synapse.api.constants import LoginType +from synapse.api.errors import Codes +from synapse.rest import admin +from synapse.rest.client.v1 import login +from synapse.rest.client.v2_alpha import account, password_policy, register + +from tests import unittest + + +class PasswordPolicyTestCase(unittest.HomeserverTestCase): + """Tests the password policy feature and its compliance with MSC2000. + + When validating a password, Synapse does the necessary checks in this order: + + 1. Password is long enough + 2. Password contains digit(s) + 3. Password contains symbol(s) + 4. Password contains uppercase letter(s) + 5. Password contains lowercase letter(s) + + For each test below that checks whether a password triggers the right error code, + that test provides a password good enough to pass the previous tests, but not the + one it is currently testing (nor any test that comes afterward). + """ + + servlets = [ + admin.register_servlets_for_client_rest_resource, + login.register_servlets, + register.register_servlets, + password_policy.register_servlets, + account.register_servlets, + ] + + def make_homeserver(self, reactor, clock): + self.register_url = "/_matrix/client/r0/register" + self.policy = { + "enabled": True, + "minimum_length": 10, + "require_digit": True, + "require_symbol": True, + "require_lowercase": True, + "require_uppercase": True, + } + + config = self.default_config() + config["password_config"] = { + "policy": self.policy, + } + + hs = self.setup_test_homeserver(config=config) + return hs + + def test_get_policy(self): + """Tests if the /password_policy endpoint returns the configured policy.""" + + request, channel = self.make_request( + "GET", "/_matrix/client/r0/password_policy" + ) + self.render(request) + + self.assertEqual(channel.code, 200, channel.result) + self.assertEqual( + channel.json_body, + { + "m.minimum_length": 10, + "m.require_digit": True, + "m.require_symbol": True, + "m.require_lowercase": True, + "m.require_uppercase": True, + }, + channel.result, + ) + + def test_password_too_short(self): + request_data = json.dumps({"username": "kermit", "password": "shorty"}) + request, channel = self.make_request("POST", self.register_url, request_data) + self.render(request) + + self.assertEqual(channel.code, 400, channel.result) + self.assertEqual( + channel.json_body["errcode"], Codes.PASSWORD_TOO_SHORT, channel.result, + ) + + def test_password_no_digit(self): + request_data = json.dumps({"username": "kermit", "password": "longerpassword"}) + request, channel = self.make_request("POST", self.register_url, request_data) + self.render(request) + + self.assertEqual(channel.code, 400, channel.result) + self.assertEqual( + channel.json_body["errcode"], Codes.PASSWORD_NO_DIGIT, channel.result, + ) + + def test_password_no_symbol(self): + request_data = json.dumps({"username": "kermit", "password": "l0ngerpassword"}) + request, channel = self.make_request("POST", self.register_url, request_data) + self.render(request) + + self.assertEqual(channel.code, 400, channel.result) + self.assertEqual( + channel.json_body["errcode"], Codes.PASSWORD_NO_SYMBOL, channel.result, + ) + + def test_password_no_uppercase(self): + request_data = json.dumps({"username": "kermit", "password": "l0ngerpassword!"}) + request, channel = self.make_request("POST", self.register_url, request_data) + self.render(request) + + self.assertEqual(channel.code, 400, channel.result) + self.assertEqual( + channel.json_body["errcode"], Codes.PASSWORD_NO_UPPERCASE, channel.result, + ) + + def test_password_no_lowercase(self): + request_data = json.dumps({"username": "kermit", "password": "L0NGERPASSWORD!"}) + request, channel = self.make_request("POST", self.register_url, request_data) + self.render(request) + + self.assertEqual(channel.code, 400, channel.result) + self.assertEqual( + channel.json_body["errcode"], Codes.PASSWORD_NO_LOWERCASE, channel.result, + ) + + def test_password_compliant(self): + request_data = json.dumps({"username": "kermit", "password": "L0ngerpassword!"}) + request, channel = self.make_request("POST", self.register_url, request_data) + self.render(request) + + # Getting a 401 here means the password has passed validation and the server has + # responded with a list of registration flows. + self.assertEqual(channel.code, 401, channel.result) + + def test_password_change(self): + """This doesn't test every possible use case, only that hitting /account/password + triggers the password validation code. + """ + compliant_password = "C0mpl!antpassword" + not_compliant_password = "notcompliantpassword" + + user_id = self.register_user("kermit", compliant_password) + tok = self.login("kermit", compliant_password) + + request_data = json.dumps( + { + "new_password": not_compliant_password, + "auth": { + "password": compliant_password, + "type": LoginType.PASSWORD, + "user": user_id, + }, + } + ) + request, channel = self.make_request( + "POST", + "/_matrix/client/r0/account/password", + request_data, + access_token=tok, + ) + self.render(request) + + self.assertEqual(channel.code, 400, channel.result) + self.assertEqual(channel.json_body["errcode"], Codes.PASSWORD_NO_DIGIT) -- cgit 1.5.1 From fa4f12102d52b75d252d9209b45251d2b1591fdf Mon Sep 17 00:00:00 2001 From: Patrick Cloke Date: Thu, 26 Mar 2020 15:05:26 -0400 Subject: Refactor the CAS code (move the logic out of the REST layer to a handler) (#7136) --- changelog.d/7136.misc | 1 + synapse/handlers/cas_handler.py | 204 ++++++++++++++++++++++++++++++++++++++++ synapse/rest/client/v1/login.py | 171 ++++----------------------------- synapse/server.py | 5 + tox.ini | 1 + 5 files changed, 227 insertions(+), 155 deletions(-) create mode 100644 changelog.d/7136.misc create mode 100644 synapse/handlers/cas_handler.py (limited to 'synapse/server.py') diff --git a/changelog.d/7136.misc b/changelog.d/7136.misc new file mode 100644 index 0000000000..3f666d25fd --- /dev/null +++ b/changelog.d/7136.misc @@ -0,0 +1 @@ +Refactored the CAS authentication logic to a separate class. diff --git a/synapse/handlers/cas_handler.py b/synapse/handlers/cas_handler.py new file mode 100644 index 0000000000..f8dc274b78 --- /dev/null +++ b/synapse/handlers/cas_handler.py @@ -0,0 +1,204 @@ +# -*- coding: utf-8 -*- +# Copyright 2020 The Matrix.org Foundation C.I.C. +# +# 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 +import xml.etree.ElementTree as ET +from typing import AnyStr, Dict, Optional, Tuple + +from six.moves import urllib + +from twisted.web.client import PartialDownloadError + +from synapse.api.errors import Codes, LoginError +from synapse.http.site import SynapseRequest +from synapse.types import UserID, map_username_to_mxid_localpart + +logger = logging.getLogger(__name__) + + +class CasHandler: + """ + Utility class for to handle the response from a CAS SSO service. + + Args: + hs (synapse.server.HomeServer) + """ + + def __init__(self, hs): + self._hostname = hs.hostname + self._auth_handler = hs.get_auth_handler() + self._registration_handler = hs.get_registration_handler() + + self._cas_server_url = hs.config.cas_server_url + self._cas_service_url = hs.config.cas_service_url + self._cas_displayname_attribute = hs.config.cas_displayname_attribute + self._cas_required_attributes = hs.config.cas_required_attributes + + self._http_client = hs.get_proxied_http_client() + + def _build_service_param(self, client_redirect_url: AnyStr) -> str: + return "%s%s?%s" % ( + self._cas_service_url, + "/_matrix/client/r0/login/cas/ticket", + urllib.parse.urlencode({"redirectUrl": client_redirect_url}), + ) + + async def _handle_cas_response( + self, request: SynapseRequest, cas_response_body: str, client_redirect_url: str + ) -> None: + """ + Retrieves the user and display name from the CAS response and continues with the authentication. + + Args: + request: The original client request. + cas_response_body: The response from the CAS server. + client_redirect_url: The URl to redirect the client to when + everything is done. + """ + user, attributes = self._parse_cas_response(cas_response_body) + displayname = attributes.pop(self._cas_displayname_attribute, None) + + for required_attribute, required_value in self._cas_required_attributes.items(): + # If required attribute was not in CAS Response - Forbidden + if required_attribute not in attributes: + raise LoginError(401, "Unauthorized", errcode=Codes.UNAUTHORIZED) + + # Also need to check value + if required_value is not None: + actual_value = attributes[required_attribute] + # If required attribute value does not match expected - Forbidden + if required_value != actual_value: + raise LoginError(401, "Unauthorized", errcode=Codes.UNAUTHORIZED) + + await self._on_successful_auth(user, request, client_redirect_url, displayname) + + def _parse_cas_response( + self, cas_response_body: str + ) -> Tuple[str, Dict[str, Optional[str]]]: + """ + Retrieve the user and other parameters from the CAS response. + + Args: + cas_response_body: The response from the CAS query. + + Returns: + A tuple of the user and a mapping of other attributes. + """ + user = None + attributes = {} + try: + root = ET.fromstring(cas_response_body) + if not root.tag.endswith("serviceResponse"): + raise Exception("root of CAS response is not serviceResponse") + success = root[0].tag.endswith("authenticationSuccess") + for child in root[0]: + if child.tag.endswith("user"): + user = child.text + if child.tag.endswith("attributes"): + for attribute in child: + # ElementTree library expands the namespace in + # attribute tags to the full URL of the namespace. + # We don't care about namespace here and it will always + # be encased in curly braces, so we remove them. + tag = attribute.tag + if "}" in tag: + tag = tag.split("}")[1] + attributes[tag] = attribute.text + if user is None: + raise Exception("CAS response does not contain user") + except Exception: + logger.exception("Error parsing CAS response") + raise LoginError(401, "Invalid CAS response", errcode=Codes.UNAUTHORIZED) + if not success: + raise LoginError( + 401, "Unsuccessful CAS response", errcode=Codes.UNAUTHORIZED + ) + return user, attributes + + async def _on_successful_auth( + self, + username: str, + request: SynapseRequest, + client_redirect_url: str, + user_display_name: Optional[str] = None, + ) -> None: + """Called once the user has successfully authenticated with the SSO. + + Registers the user if necessary, and then returns a redirect (with + a login token) to the client. + + Args: + username: the remote user id. We'll map this onto + something sane for a MXID localpath. + + request: the incoming request from the browser. We'll + respond to it with a redirect. + + client_redirect_url: the redirect_url the client gave us when + it first started the process. + + user_display_name: if set, and we have to register a new user, + we will set their displayname to this. + """ + localpart = map_username_to_mxid_localpart(username) + user_id = UserID(localpart, self._hostname).to_string() + registered_user_id = await self._auth_handler.check_user_exists(user_id) + if not registered_user_id: + registered_user_id = await self._registration_handler.register_user( + localpart=localpart, default_display_name=user_display_name + ) + + self._auth_handler.complete_sso_login( + registered_user_id, request, client_redirect_url + ) + + def handle_redirect_request(self, client_redirect_url: bytes) -> bytes: + """ + Generates a URL to the CAS server where the client should be redirected. + + Args: + client_redirect_url: The final URL the client should go to after the + user has negotiated SSO. + + Returns: + The URL to redirect to. + """ + args = urllib.parse.urlencode( + {"service": self._build_service_param(client_redirect_url)} + ) + + return ("%s/login?%s" % (self._cas_server_url, args)).encode("ascii") + + async def handle_ticket_request( + self, request: SynapseRequest, client_redirect_url: str, ticket: str + ) -> None: + """ + Validates a CAS ticket sent by the client for login/registration. + + On a successful request, writes a redirect to the request. + """ + uri = self._cas_server_url + "/proxyValidate" + args = { + "ticket": ticket, + "service": self._build_service_param(client_redirect_url), + } + try: + body = await self._http_client.get_raw(uri, args) + except PartialDownloadError as pde: + # Twisted raises this error if the connection is closed, + # even if that's being used old-http style to signal end-of-data + body = pde.response + + await self._handle_cas_response(request, body, client_redirect_url) diff --git a/synapse/rest/client/v1/login.py b/synapse/rest/client/v1/login.py index 56d713462a..59593cbf6e 100644 --- a/synapse/rest/client/v1/login.py +++ b/synapse/rest/client/v1/login.py @@ -14,11 +14,6 @@ # limitations under the License. import logging -import xml.etree.ElementTree as ET - -from six.moves import urllib - -from twisted.web.client import PartialDownloadError from synapse.api.errors import Codes, LoginError, SynapseError from synapse.api.ratelimiting import Ratelimiter @@ -28,9 +23,10 @@ from synapse.http.servlet import ( parse_json_object_from_request, parse_string, ) +from synapse.http.site import SynapseRequest from synapse.rest.client.v2_alpha._base import client_patterns from synapse.rest.well_known import WellKnownBuilder -from synapse.types import UserID, map_username_to_mxid_localpart +from synapse.types import UserID from synapse.util.msisdn import phone_number_to_msisdn logger = logging.getLogger(__name__) @@ -72,14 +68,6 @@ def login_id_thirdparty_from_phone(identifier): return {"type": "m.id.thirdparty", "medium": "msisdn", "address": msisdn} -def build_service_param(cas_service_url, client_redirect_url): - return "%s%s?redirectUrl=%s" % ( - cas_service_url, - "/_matrix/client/r0/login/cas/ticket", - urllib.parse.quote(client_redirect_url, safe=""), - ) - - class LoginRestServlet(RestServlet): PATTERNS = client_patterns("/login$", v1=True) CAS_TYPE = "m.login.cas" @@ -409,7 +397,7 @@ class BaseSSORedirectServlet(RestServlet): PATTERNS = client_patterns("/login/(cas|sso)/redirect", v1=True) - def on_GET(self, request): + def on_GET(self, request: SynapseRequest): args = request.args if b"redirectUrl" not in args: return 400, "Redirect URL not specified for SSO auth" @@ -418,15 +406,15 @@ class BaseSSORedirectServlet(RestServlet): request.redirect(sso_url) finish_request(request) - def get_sso_url(self, client_redirect_url): + def get_sso_url(self, client_redirect_url: bytes) -> bytes: """Get the URL to redirect to, to perform SSO auth Args: - client_redirect_url (bytes): the URL that we should redirect the + client_redirect_url: the URL that we should redirect the client to when everything is done Returns: - bytes: URL to redirect to + URL to redirect to """ # to be implemented by subclasses raise NotImplementedError() @@ -434,16 +422,10 @@ class BaseSSORedirectServlet(RestServlet): class CasRedirectServlet(BaseSSORedirectServlet): def __init__(self, hs): - super(CasRedirectServlet, self).__init__() - self.cas_server_url = hs.config.cas_server_url - self.cas_service_url = hs.config.cas_service_url + self._cas_handler = hs.get_cas_handler() - def get_sso_url(self, client_redirect_url): - args = urllib.parse.urlencode( - {"service": build_service_param(self.cas_service_url, client_redirect_url)} - ) - - return "%s/login?%s" % (self.cas_server_url, args) + def get_sso_url(self, client_redirect_url: bytes) -> bytes: + return self._cas_handler.handle_redirect_request(client_redirect_url) class CasTicketServlet(RestServlet): @@ -451,81 +433,15 @@ class CasTicketServlet(RestServlet): def __init__(self, hs): super(CasTicketServlet, self).__init__() - self.cas_server_url = hs.config.cas_server_url - self.cas_service_url = hs.config.cas_service_url - self.cas_displayname_attribute = hs.config.cas_displayname_attribute - self.cas_required_attributes = hs.config.cas_required_attributes - self._sso_auth_handler = SSOAuthHandler(hs) - self._http_client = hs.get_proxied_http_client() - - async def on_GET(self, request): - client_redirect_url = parse_string(request, "redirectUrl", required=True) - uri = self.cas_server_url + "/proxyValidate" - args = { - "ticket": parse_string(request, "ticket", required=True), - "service": build_service_param(self.cas_service_url, client_redirect_url), - } - try: - body = await self._http_client.get_raw(uri, args) - except PartialDownloadError as pde: - # Twisted raises this error if the connection is closed, - # even if that's being used old-http style to signal end-of-data - body = pde.response - result = await self.handle_cas_response(request, body, client_redirect_url) - return result + self._cas_handler = hs.get_cas_handler() - def handle_cas_response(self, request, cas_response_body, client_redirect_url): - user, attributes = self.parse_cas_response(cas_response_body) - displayname = attributes.pop(self.cas_displayname_attribute, None) - - for required_attribute, required_value in self.cas_required_attributes.items(): - # If required attribute was not in CAS Response - Forbidden - if required_attribute not in attributes: - raise LoginError(401, "Unauthorized", errcode=Codes.UNAUTHORIZED) - - # Also need to check value - if required_value is not None: - actual_value = attributes[required_attribute] - # If required attribute value does not match expected - Forbidden - if required_value != actual_value: - raise LoginError(401, "Unauthorized", errcode=Codes.UNAUTHORIZED) - - return self._sso_auth_handler.on_successful_auth( - user, request, client_redirect_url, displayname + async def on_GET(self, request: SynapseRequest) -> None: + client_redirect_url = parse_string(request, "redirectUrl", required=True) + ticket = parse_string(request, "ticket", required=True) + await self._cas_handler.handle_ticket_request( + request, client_redirect_url, ticket ) - def parse_cas_response(self, cas_response_body): - user = None - attributes = {} - try: - root = ET.fromstring(cas_response_body) - if not root.tag.endswith("serviceResponse"): - raise Exception("root of CAS response is not serviceResponse") - success = root[0].tag.endswith("authenticationSuccess") - for child in root[0]: - if child.tag.endswith("user"): - user = child.text - if child.tag.endswith("attributes"): - for attribute in child: - # ElementTree library expands the namespace in - # attribute tags to the full URL of the namespace. - # We don't care about namespace here and it will always - # be encased in curly braces, so we remove them. - tag = attribute.tag - if "}" in tag: - tag = tag.split("}")[1] - attributes[tag] = attribute.text - if user is None: - raise Exception("CAS response does not contain user") - except Exception: - logger.exception("Error parsing CAS response") - raise LoginError(401, "Invalid CAS response", errcode=Codes.UNAUTHORIZED) - if not success: - raise LoginError( - 401, "Unsuccessful CAS response", errcode=Codes.UNAUTHORIZED - ) - return user, attributes - class SAMLRedirectServlet(BaseSSORedirectServlet): PATTERNS = client_patterns("/login/sso/redirect", v1=True) @@ -533,65 +449,10 @@ class SAMLRedirectServlet(BaseSSORedirectServlet): def __init__(self, hs): self._saml_handler = hs.get_saml_handler() - def get_sso_url(self, client_redirect_url): + def get_sso_url(self, client_redirect_url: bytes) -> bytes: return self._saml_handler.handle_redirect_request(client_redirect_url) -class SSOAuthHandler(object): - """ - Utility class for Resources and Servlets which handle the response from a SSO - service - - Args: - hs (synapse.server.HomeServer) - """ - - def __init__(self, hs): - self._hostname = hs.hostname - self._auth_handler = hs.get_auth_handler() - self._registration_handler = hs.get_registration_handler() - self._macaroon_gen = hs.get_macaroon_generator() - - # cast to tuple for use with str.startswith - self._whitelisted_sso_clients = tuple(hs.config.sso_client_whitelist) - - async def on_successful_auth( - self, username, request, client_redirect_url, user_display_name=None - ): - """Called once the user has successfully authenticated with the SSO. - - Registers the user if necessary, and then returns a redirect (with - a login token) to the client. - - Args: - username (unicode|bytes): the remote user id. We'll map this onto - something sane for a MXID localpath. - - request (SynapseRequest): the incoming request from the browser. We'll - respond to it with a redirect. - - client_redirect_url (unicode): the redirect_url the client gave us when - it first started the process. - - user_display_name (unicode|None): if set, and we have to register a new user, - we will set their displayname to this. - - Returns: - Deferred[none]: Completes once we have handled the request. - """ - localpart = map_username_to_mxid_localpart(username) - user_id = UserID(localpart, self._hostname).to_string() - registered_user_id = await self._auth_handler.check_user_exists(user_id) - if not registered_user_id: - registered_user_id = await self._registration_handler.register_user( - localpart=localpart, default_display_name=user_display_name - ) - - self._auth_handler.complete_sso_login( - registered_user_id, request, client_redirect_url - ) - - def register_servlets(hs, http_server): LoginRestServlet(hs).register(http_server) if hs.config.cas_enabled: diff --git a/synapse/server.py b/synapse/server.py index d0d80e8ac5..c7ca2bda0d 100644 --- a/synapse/server.py +++ b/synapse/server.py @@ -56,6 +56,7 @@ from synapse.handlers.account_validity import AccountValidityHandler from synapse.handlers.acme import AcmeHandler from synapse.handlers.appservice import ApplicationServicesHandler from synapse.handlers.auth import AuthHandler, MacaroonGenerator +from synapse.handlers.cas_handler import CasHandler from synapse.handlers.deactivate_account import DeactivateAccountHandler from synapse.handlers.device import DeviceHandler, DeviceWorkerHandler from synapse.handlers.devicemessage import DeviceMessageHandler @@ -198,6 +199,7 @@ class HomeServer(object): "sendmail", "registration_handler", "account_validity_handler", + "cas_handler", "saml_handler", "event_client_serializer", "password_policy_handler", @@ -529,6 +531,9 @@ class HomeServer(object): def build_account_validity_handler(self): return AccountValidityHandler(self) + def build_cas_handler(self): + return CasHandler(self) + def build_saml_handler(self): from synapse.handlers.saml_handler import SamlHandler diff --git a/tox.ini b/tox.ini index 8e3f09e638..a79fc93b57 100644 --- a/tox.ini +++ b/tox.ini @@ -186,6 +186,7 @@ commands = mypy \ synapse/federation/sender \ synapse/federation/transport \ synapse/handlers/auth.py \ + synapse/handlers/cas_handler.py \ synapse/handlers/directory.py \ synapse/handlers/presence.py \ synapse/handlers/sync.py \ -- cgit 1.5.1 From 4f21c33be301b8ea6369039c3ad8baa51878e4d5 Mon Sep 17 00:00:00 2001 From: Erik Johnston Date: Mon, 30 Mar 2020 16:37:24 +0100 Subject: Remove usage of "conn_id" for presence. (#7128) * Remove `conn_id` usage for UserSyncCommand. Each tcp replication connection is assigned a "conn_id", which is used to give an ID to a remotely connected worker. In a redis world, there will no longer be a one to one mapping between connection and instance, so instead we need to replace such usages with an ID generated by the remote instances and included in the replicaiton commands. This really only effects UserSyncCommand. * Add CLEAR_USER_SYNCS command that is sent on shutdown. This should help with the case where a synchrotron gets restarted gracefully, rather than rely on 5 minute timeout. --- changelog.d/7128.misc | 1 + docs/tcp_replication.md | 6 ++++++ synapse/app/generic_worker.py | 20 ++++++++++++++++---- synapse/replication/tcp/client.py | 6 ++++-- synapse/replication/tcp/commands.py | 36 ++++++++++++++++++++++++++++++++---- synapse/replication/tcp/protocol.py | 9 +++++++-- synapse/replication/tcp/resource.py | 17 +++++++---------- synapse/server.py | 11 +++++++++++ synapse/server.pyi | 2 ++ 9 files changed, 86 insertions(+), 22 deletions(-) create mode 100644 changelog.d/7128.misc (limited to 'synapse/server.py') diff --git a/changelog.d/7128.misc b/changelog.d/7128.misc new file mode 100644 index 0000000000..5703f6d2ec --- /dev/null +++ b/changelog.d/7128.misc @@ -0,0 +1 @@ +Add explicit `instance_id` for USER_SYNC commands and remove implicit `conn_id` usage. diff --git a/docs/tcp_replication.md b/docs/tcp_replication.md index d4f7d9ec18..3be8e50c4c 100644 --- a/docs/tcp_replication.md +++ b/docs/tcp_replication.md @@ -198,6 +198,12 @@ Asks the server for the current position of all streams. A user has started or stopped syncing +#### CLEAR_USER_SYNC (C) + + The server should clear all associated user sync data from the worker. + + This is used when a worker is shutting down. + #### FEDERATION_ACK (C) Acknowledge receipt of some federation data diff --git a/synapse/app/generic_worker.py b/synapse/app/generic_worker.py index fba7ad9551..1ee266f7c5 100644 --- a/synapse/app/generic_worker.py +++ b/synapse/app/generic_worker.py @@ -65,6 +65,7 @@ from synapse.replication.slave.storage.registration import SlavedRegistrationSto from synapse.replication.slave.storage.room import RoomStore from synapse.replication.slave.storage.transactions import SlavedTransactionStore from synapse.replication.tcp.client import ReplicationClientHandler +from synapse.replication.tcp.commands import ClearUserSyncsCommand from synapse.replication.tcp.streams import ( AccountDataStream, DeviceListsStream, @@ -124,7 +125,6 @@ from synapse.types import ReadReceipt from synapse.util.async_helpers import Linearizer from synapse.util.httpresourcetree import create_resource_tree from synapse.util.manhole import manhole -from synapse.util.stringutils import random_string from synapse.util.versionstring import get_version_string logger = logging.getLogger("synapse.app.generic_worker") @@ -233,6 +233,7 @@ class GenericWorkerPresence(object): self.user_to_num_current_syncs = {} self.clock = hs.get_clock() self.notifier = hs.get_notifier() + self.instance_id = hs.get_instance_id() active_presence = self.store.take_presence_startup_info() self.user_to_current_state = {state.user_id: state for state in active_presence} @@ -245,13 +246,24 @@ class GenericWorkerPresence(object): self.send_stop_syncing, UPDATE_SYNCING_USERS_MS ) - self.process_id = random_string(16) - logger.info("Presence process_id is %r", self.process_id) + hs.get_reactor().addSystemEventTrigger( + "before", + "shutdown", + run_as_background_process, + "generic_presence.on_shutdown", + self._on_shutdown, + ) + + def _on_shutdown(self): + if self.hs.config.use_presence: + self.hs.get_tcp_replication().send_command( + ClearUserSyncsCommand(self.instance_id) + ) def send_user_sync(self, user_id, is_syncing, last_sync_ms): if self.hs.config.use_presence: self.hs.get_tcp_replication().send_user_sync( - user_id, is_syncing, last_sync_ms + self.instance_id, user_id, is_syncing, last_sync_ms ) def mark_as_coming_online(self, user_id): diff --git a/synapse/replication/tcp/client.py b/synapse/replication/tcp/client.py index 7e7ad0f798..e86d9805f1 100644 --- a/synapse/replication/tcp/client.py +++ b/synapse/replication/tcp/client.py @@ -189,10 +189,12 @@ class ReplicationClientHandler(AbstractReplicationClientHandler): """ self.send_command(FederationAckCommand(token)) - def send_user_sync(self, user_id, is_syncing, last_sync_ms): + def send_user_sync(self, instance_id, user_id, is_syncing, last_sync_ms): """Poke the master that a user has started/stopped syncing. """ - self.send_command(UserSyncCommand(user_id, is_syncing, last_sync_ms)) + self.send_command( + UserSyncCommand(instance_id, user_id, is_syncing, last_sync_ms) + ) def send_remove_pusher(self, app_id, push_key, user_id): """Poke the master to remove a pusher for a user diff --git a/synapse/replication/tcp/commands.py b/synapse/replication/tcp/commands.py index 5a6b734094..e4eec643f7 100644 --- a/synapse/replication/tcp/commands.py +++ b/synapse/replication/tcp/commands.py @@ -207,30 +207,32 @@ class UserSyncCommand(Command): Format:: - USER_SYNC + USER_SYNC Where is either "start" or "stop" """ NAME = "USER_SYNC" - def __init__(self, user_id, is_syncing, last_sync_ms): + def __init__(self, instance_id, user_id, is_syncing, last_sync_ms): + self.instance_id = instance_id self.user_id = user_id self.is_syncing = is_syncing self.last_sync_ms = last_sync_ms @classmethod def from_line(cls, line): - user_id, state, last_sync_ms = line.split(" ", 2) + instance_id, user_id, state, last_sync_ms = line.split(" ", 3) if state not in ("start", "end"): raise Exception("Invalid USER_SYNC state %r" % (state,)) - return cls(user_id, state == "start", int(last_sync_ms)) + return cls(instance_id, user_id, state == "start", int(last_sync_ms)) def to_line(self): return " ".join( ( + self.instance_id, self.user_id, "start" if self.is_syncing else "end", str(self.last_sync_ms), @@ -238,6 +240,30 @@ class UserSyncCommand(Command): ) +class ClearUserSyncsCommand(Command): + """Sent by the client to inform the server that it should drop all + information about syncing users sent by the client. + + Mainly used when client is about to shut down. + + Format:: + + CLEAR_USER_SYNC + """ + + NAME = "CLEAR_USER_SYNC" + + def __init__(self, instance_id): + self.instance_id = instance_id + + @classmethod + def from_line(cls, line): + return cls(line) + + def to_line(self): + return self.instance_id + + class FederationAckCommand(Command): """Sent by the client when it has processed up to a given point in the federation stream. This allows the master to drop in-memory caches of the @@ -398,6 +424,7 @@ _COMMANDS = ( InvalidateCacheCommand, UserIpCommand, RemoteServerUpCommand, + ClearUserSyncsCommand, ) # type: Tuple[Type[Command], ...] # Map of command name to command type. @@ -420,6 +447,7 @@ VALID_CLIENT_COMMANDS = ( ReplicateCommand.NAME, PingCommand.NAME, UserSyncCommand.NAME, + ClearUserSyncsCommand.NAME, FederationAckCommand.NAME, RemovePusherCommand.NAME, InvalidateCacheCommand.NAME, diff --git a/synapse/replication/tcp/protocol.py b/synapse/replication/tcp/protocol.py index f81d2e2442..dae246825f 100644 --- a/synapse/replication/tcp/protocol.py +++ b/synapse/replication/tcp/protocol.py @@ -423,9 +423,12 @@ class ServerReplicationStreamProtocol(BaseReplicationStreamProtocol): async def on_USER_SYNC(self, cmd): await self.streamer.on_user_sync( - self.conn_id, cmd.user_id, cmd.is_syncing, cmd.last_sync_ms + cmd.instance_id, cmd.user_id, cmd.is_syncing, cmd.last_sync_ms ) + async def on_CLEAR_USER_SYNC(self, cmd): + await self.streamer.on_clear_user_syncs(cmd.instance_id) + async def on_REPLICATE(self, cmd): # Subscribe to all streams we're publishing to. for stream_name in self.streamer.streams_by_name: @@ -551,6 +554,8 @@ class ClientReplicationStreamProtocol(BaseReplicationStreamProtocol): ): BaseReplicationStreamProtocol.__init__(self, clock) + self.instance_id = hs.get_instance_id() + self.client_name = client_name self.server_name = server_name self.handler = handler @@ -580,7 +585,7 @@ class ClientReplicationStreamProtocol(BaseReplicationStreamProtocol): currently_syncing = self.handler.get_currently_syncing_users() now = self.clock.time_msec() for user_id in currently_syncing: - self.send_command(UserSyncCommand(user_id, True, now)) + self.send_command(UserSyncCommand(self.instance_id, user_id, True, now)) # We've now finished connecting to so inform the client handler self.handler.update_connection(self) diff --git a/synapse/replication/tcp/resource.py b/synapse/replication/tcp/resource.py index 4374e99e32..8b6067e20d 100644 --- a/synapse/replication/tcp/resource.py +++ b/synapse/replication/tcp/resource.py @@ -251,14 +251,19 @@ class ReplicationStreamer(object): self.federation_sender.federation_ack(token) @measure_func("repl.on_user_sync") - async def on_user_sync(self, conn_id, user_id, is_syncing, last_sync_ms): + async def on_user_sync(self, instance_id, user_id, is_syncing, last_sync_ms): """A client has started/stopped syncing on a worker. """ user_sync_counter.inc() await self.presence_handler.update_external_syncs_row( - conn_id, user_id, is_syncing, last_sync_ms + instance_id, user_id, is_syncing, last_sync_ms ) + async def on_clear_user_syncs(self, instance_id): + """A replication client wants us to drop all their UserSync data. + """ + await self.presence_handler.update_external_syncs_clear(instance_id) + @measure_func("repl.on_remove_pusher") async def on_remove_pusher(self, app_id, push_key, user_id): """A client has asked us to remove a pusher @@ -321,14 +326,6 @@ class ReplicationStreamer(object): except ValueError: pass - # We need to tell the presence handler that the connection has been - # lost so that it can handle any ongoing syncs on that connection. - run_as_background_process( - "update_external_syncs_clear", - self.presence_handler.update_external_syncs_clear, - connection.conn_id, - ) - def _batch_updates(updates): """Takes a list of updates of form [(token, row)] and sets the token to diff --git a/synapse/server.py b/synapse/server.py index c7ca2bda0d..cd86475d6b 100644 --- a/synapse/server.py +++ b/synapse/server.py @@ -103,6 +103,7 @@ from synapse.storage import DataStores, Storage from synapse.streams.events import EventSources from synapse.util import Clock from synapse.util.distributor import Distributor +from synapse.util.stringutils import random_string logger = logging.getLogger(__name__) @@ -230,6 +231,8 @@ class HomeServer(object): self._listening_services = [] self.start_time = None + self.instance_id = random_string(5) + self.clock = Clock(reactor) self.distributor = Distributor() self.ratelimiter = Ratelimiter() @@ -242,6 +245,14 @@ class HomeServer(object): for depname in kwargs: setattr(self, depname, kwargs[depname]) + def get_instance_id(self): + """A unique ID for this synapse process instance. + + This is used to distinguish running instances in worker-based + deployments. + """ + return self.instance_id + def setup(self): logger.info("Setting up.") self.start_time = int(self.get_clock().time()) diff --git a/synapse/server.pyi b/synapse/server.pyi index 3844f0e12f..9d1dfa71e7 100644 --- a/synapse/server.pyi +++ b/synapse/server.pyi @@ -114,3 +114,5 @@ class HomeServer(object): pass def is_mine_id(self, domain_id: str) -> bool: pass + def get_instance_id(self) -> str: + pass -- cgit 1.5.1 From 62a7289133840b4f4a55844b4f24ec664c3d917b Mon Sep 17 00:00:00 2001 From: Richard van der Hoff <1389908+richvdh@users.noreply.github.com> Date: Tue, 31 Mar 2020 13:09:16 +0100 Subject: Fix a bug which could cause incorrect 'cyclic dependency' error. (#7178) If there was an exception setting up one of the attributes of the Homeserver god object, then future attempts to fetch that attribute would raise a confusing "Cyclic dependency" error. Let's make sure that we clear the `building` flag so that we just get the original exception. Ref: #7169 --- changelog.d/7178.bugfix | 1 + synapse/server.py | 22 ++++++++++------------ 2 files changed, 11 insertions(+), 12 deletions(-) create mode 100644 changelog.d/7178.bugfix (limited to 'synapse/server.py') diff --git a/changelog.d/7178.bugfix b/changelog.d/7178.bugfix new file mode 100644 index 0000000000..35ea645d75 --- /dev/null +++ b/changelog.d/7178.bugfix @@ -0,0 +1 @@ +Fix a bug which could cause incorrect 'cyclic dependency' error. diff --git a/synapse/server.py b/synapse/server.py index cd86475d6b..9228e1c892 100644 --- a/synapse/server.py +++ b/synapse/server.py @@ -583,24 +583,22 @@ def _make_dependency_method(depname): try: builder = getattr(hs, "build_%s" % (depname)) except AttributeError: - builder = None + raise NotImplementedError( + "%s has no %s nor a builder for it" % (type(hs).__name__, depname) + ) - if builder: - # Prevent cyclic dependencies from deadlocking - if depname in hs._building: - raise ValueError("Cyclic dependency while building %s" % (depname,)) - hs._building[depname] = 1 + # Prevent cyclic dependencies from deadlocking + if depname in hs._building: + raise ValueError("Cyclic dependency while building %s" % (depname,)) + hs._building[depname] = 1 + try: dep = builder() setattr(hs, depname, dep) - + finally: del hs._building[depname] - return dep - - raise NotImplementedError( - "%s has no %s nor a builder for it" % (type(hs).__name__, depname) - ) + return dep setattr(HomeServer, "get_%s" % (depname), _get) -- cgit 1.5.1 From 5016b162fcf0372fe35404c64f80aeaf21461f31 Mon Sep 17 00:00:00 2001 From: Erik Johnston Date: Mon, 6 Apr 2020 09:58:42 +0100 Subject: Move client command handling out of TCP protocol (#7185) The aim here is to move the command handling out of the TCP protocol classes and to also merge the client and server command handling (so that we can reuse them for redis protocol). This PR simply moves the client paths to the new `ReplicationCommandHandler`, a future PR will move the server paths too. --- changelog.d/7185.misc | 1 + synapse/app/admin_cmd.py | 12 -- synapse/app/generic_worker.py | 9 +- synapse/replication/tcp/__init__.py | 30 ++- synapse/replication/tcp/client.py | 179 +++--------------- synapse/replication/tcp/handler.py | 252 +++++++++++++++++++++++++ synapse/replication/tcp/protocol.py | 197 +++---------------- synapse/server.py | 8 +- synapse/server.pyi | 7 +- tests/replication/slave/storage/_base.py | 15 +- tests/replication/tcp/streams/_base.py | 38 ++-- tests/replication/tcp/streams/test_receipts.py | 1 - 12 files changed, 378 insertions(+), 371 deletions(-) create mode 100644 changelog.d/7185.misc create mode 100644 synapse/replication/tcp/handler.py (limited to 'synapse/server.py') diff --git a/changelog.d/7185.misc b/changelog.d/7185.misc new file mode 100644 index 0000000000..deb9ca7021 --- /dev/null +++ b/changelog.d/7185.misc @@ -0,0 +1 @@ +Move client command handling out of TCP protocol. diff --git a/synapse/app/admin_cmd.py b/synapse/app/admin_cmd.py index 1c7c6ec0c8..a37818fe9a 100644 --- a/synapse/app/admin_cmd.py +++ b/synapse/app/admin_cmd.py @@ -43,7 +43,6 @@ from synapse.replication.slave.storage.push_rule import SlavedPushRuleStore from synapse.replication.slave.storage.receipts import SlavedReceiptsStore from synapse.replication.slave.storage.registration import SlavedRegistrationStore from synapse.replication.slave.storage.room import RoomStore -from synapse.replication.tcp.client import ReplicationClientHandler from synapse.server import HomeServer from synapse.util.logcontext import LoggingContext from synapse.util.versionstring import get_version_string @@ -79,17 +78,6 @@ class AdminCmdServer(HomeServer): def start_listening(self, listeners): pass - def build_tcp_replication(self): - return AdminCmdReplicationHandler(self) - - -class AdminCmdReplicationHandler(ReplicationClientHandler): - async def on_rdata(self, stream_name, token, rows): - pass - - def get_streams_to_replicate(self): - return {} - @defer.inlineCallbacks def export_data_command(hs, args): diff --git a/synapse/app/generic_worker.py b/synapse/app/generic_worker.py index 174bef360f..dcd0709a02 100644 --- a/synapse/app/generic_worker.py +++ b/synapse/app/generic_worker.py @@ -64,7 +64,7 @@ from synapse.replication.slave.storage.receipts import SlavedReceiptsStore from synapse.replication.slave.storage.registration import SlavedRegistrationStore from synapse.replication.slave.storage.room import RoomStore from synapse.replication.slave.storage.transactions import SlavedTransactionStore -from synapse.replication.tcp.client import ReplicationClientHandler +from synapse.replication.tcp.client import ReplicationDataHandler from synapse.replication.tcp.commands import ClearUserSyncsCommand from synapse.replication.tcp.streams import ( AccountDataStream, @@ -603,7 +603,7 @@ class GenericWorkerServer(HomeServer): def remove_pusher(self, app_id, push_key, user_id): self.get_tcp_replication().send_remove_pusher(app_id, push_key, user_id) - def build_tcp_replication(self): + def build_replication_data_handler(self): return GenericWorkerReplicationHandler(self) def build_presence_handler(self): @@ -613,7 +613,7 @@ class GenericWorkerServer(HomeServer): return GenericWorkerTyping(self) -class GenericWorkerReplicationHandler(ReplicationClientHandler): +class GenericWorkerReplicationHandler(ReplicationDataHandler): def __init__(self, hs): super(GenericWorkerReplicationHandler, self).__init__(hs.get_datastore()) @@ -644,9 +644,6 @@ class GenericWorkerReplicationHandler(ReplicationClientHandler): args.update(self.send_handler.stream_positions()) return args - def get_currently_syncing_users(self): - return self.presence_handler.get_currently_syncing_users() - async def process_and_notify(self, stream_name, token, rows): try: if self.send_handler: diff --git a/synapse/replication/tcp/__init__.py b/synapse/replication/tcp/__init__.py index 81c2ea7ee9..523a1358d4 100644 --- a/synapse/replication/tcp/__init__.py +++ b/synapse/replication/tcp/__init__.py @@ -20,11 +20,31 @@ Further details can be found in docs/tcp_replication.rst Structure of the module: - * client.py - the client classes used for workers to connect to master + * handler.py - the classes used to handle sending/receiving commands to + replication * command.py - the definitions of all the valid commands - * protocol.py - contains bot the client and server protocol implementations, - these should not be used directly - * resource.py - the server classes that accepts and handle client connections - * streams.py - the definitons of all the valid streams + * protocol.py - the TCP protocol classes + * resource.py - handles streaming stream updates to replications + * streams/ - the definitons of all the valid streams + +The general interaction of the classes are: + + +---------------------+ + | ReplicationStreamer | + +---------------------+ + | + v + +---------------------------+ +----------------------+ + | ReplicationCommandHandler |---->|ReplicationDataHandler| + +---------------------------+ +----------------------+ + | ^ + v | + +-------------+ + | Protocols | + | (TCP/redis) | + +-------------+ + +Where the ReplicationDataHandler (or subclasses) handles incoming stream +updates. """ diff --git a/synapse/replication/tcp/client.py b/synapse/replication/tcp/client.py index e86d9805f1..700ae79158 100644 --- a/synapse/replication/tcp/client.py +++ b/synapse/replication/tcp/client.py @@ -16,26 +16,16 @@ """ import logging -from typing import Dict, List, Optional +from typing import TYPE_CHECKING, Dict -from twisted.internet import defer from twisted.internet.protocol import ReconnectingClientFactory from synapse.replication.slave.storage._base import BaseSlavedStore -from synapse.replication.tcp.protocol import ( - AbstractReplicationClientHandler, - ClientReplicationStreamProtocol, -) - -from .commands import ( - Command, - FederationAckCommand, - InvalidateCacheCommand, - RemoteServerUpCommand, - RemovePusherCommand, - UserIpCommand, - UserSyncCommand, -) +from synapse.replication.tcp.protocol import ClientReplicationStreamProtocol + +if TYPE_CHECKING: + from synapse.server import HomeServer + from synapse.replication.tcp.handler import ReplicationCommandHandler logger = logging.getLogger(__name__) @@ -44,16 +34,20 @@ class ReplicationClientFactory(ReconnectingClientFactory): """Factory for building connections to the master. Will reconnect if the connection is lost. - Accepts a handler that will be called when new data is available or data - is required. + Accepts a handler that is passed to `ClientReplicationStreamProtocol`. """ initialDelay = 0.1 maxDelay = 1 # Try at least once every N seconds - def __init__(self, hs, client_name, handler: AbstractReplicationClientHandler): + def __init__( + self, + hs: "HomeServer", + client_name: str, + command_handler: "ReplicationCommandHandler", + ): self.client_name = client_name - self.handler = handler + self.command_handler = command_handler self.server_name = hs.config.server_name self.hs = hs self._clock = hs.get_clock() # As self.clock is defined in super class @@ -66,7 +60,11 @@ class ReplicationClientFactory(ReconnectingClientFactory): def buildProtocol(self, addr): logger.info("Connected to replication: %r", addr) return ClientReplicationStreamProtocol( - self.hs, self.client_name, self.server_name, self._clock, self.handler, + self.hs, + self.client_name, + self.server_name, + self._clock, + self.command_handler, ) def clientConnectionLost(self, connector, reason): @@ -78,41 +76,17 @@ class ReplicationClientFactory(ReconnectingClientFactory): ReconnectingClientFactory.clientConnectionFailed(self, connector, reason) -class ReplicationClientHandler(AbstractReplicationClientHandler): - """A base handler that can be passed to the ReplicationClientFactory. +class ReplicationDataHandler: + """Handles incoming stream updates from replication. - By default proxies incoming replication data to the SlaveStore. + This instance notifies the slave data store about updates. Can be subclassed + to handle updates in additional ways. """ def __init__(self, store: BaseSlavedStore): self.store = store - # The current connection. None if we are currently (re)connecting - self.connection = None - - # Any pending commands to be sent once a new connection has been - # established - self.pending_commands = [] # type: List[Command] - - # Map from string -> deferred, to wake up when receiveing a SYNC with - # the given string. - # Used for tests. - self.awaiting_syncs = {} # type: Dict[str, defer.Deferred] - - # The factory used to create connections. - self.factory = None # type: Optional[ReplicationClientFactory] - - def start_replication(self, hs): - """Helper method to start a replication connection to the remote server - using TCP. - """ - client_name = hs.config.worker_name - self.factory = ReplicationClientFactory(hs, client_name, self) - host = hs.config.worker_replication_host - port = hs.config.worker_replication_port - hs.get_reactor().connectTCP(host, port, self.factory) - - async def on_rdata(self, stream_name, token, rows): + async def on_rdata(self, stream_name: str, token: int, rows: list): """Called to handle a batch of replication data with a given stream token. By default this just pokes the slave store. Can be overridden in subclasses to @@ -124,30 +98,8 @@ class ReplicationClientHandler(AbstractReplicationClientHandler): rows (list): a list of Stream.ROW_TYPE objects as returned by Stream.parse_row. """ - logger.debug("Received rdata %s -> %s", stream_name, token) self.store.process_replication_rows(stream_name, token, rows) - async def on_position(self, stream_name, token): - """Called when we get new position data. By default this just pokes - the slave store. - - Can be overriden in subclasses to handle more. - """ - self.store.process_replication_rows(stream_name, token, []) - - def on_sync(self, data): - """When we received a SYNC we wake up any deferreds that were waiting - for the sync with the given data. - - Used by tests. - """ - d = self.awaiting_syncs.pop(data, None) - if d: - d.callback(data) - - def on_remote_server_up(self, server: str): - """Called when get a new REMOTE_SERVER_UP command.""" - def get_streams_to_replicate(self) -> Dict[str, int]: """Called when a new connection has been established and we need to subscribe to streams. @@ -163,85 +115,10 @@ class ReplicationClientHandler(AbstractReplicationClientHandler): args["account_data"] = user_account_data elif room_account_data: args["account_data"] = room_account_data - return args - def get_currently_syncing_users(self): - """Get the list of currently syncing users (if any). This is called - when a connection has been established and we need to send the - currently syncing users. (Overriden by the synchrotron's only) - """ - return [] - - def send_command(self, cmd): - """Send a command to master (when we get establish a connection if we - don't have one already.) - """ - if self.connection: - self.connection.send_command(cmd) - else: - logger.warning("Queuing command as not connected: %r", cmd.NAME) - self.pending_commands.append(cmd) - - def send_federation_ack(self, token): - """Ack data for the federation stream. This allows the master to drop - data stored purely in memory. - """ - self.send_command(FederationAckCommand(token)) - - def send_user_sync(self, instance_id, user_id, is_syncing, last_sync_ms): - """Poke the master that a user has started/stopped syncing. - """ - self.send_command( - UserSyncCommand(instance_id, user_id, is_syncing, last_sync_ms) - ) - - def send_remove_pusher(self, app_id, push_key, user_id): - """Poke the master to remove a pusher for a user - """ - cmd = RemovePusherCommand(app_id, push_key, user_id) - self.send_command(cmd) - - def send_invalidate_cache(self, cache_func, keys): - """Poke the master to invalidate a cache. - """ - cmd = InvalidateCacheCommand(cache_func.__name__, keys) - self.send_command(cmd) - - def send_user_ip(self, user_id, access_token, ip, user_agent, device_id, last_seen): - """Tell the master that the user made a request. - """ - cmd = UserIpCommand(user_id, access_token, ip, user_agent, device_id, last_seen) - self.send_command(cmd) - - def send_remote_server_up(self, server: str): - self.send_command(RemoteServerUpCommand(server)) - - def await_sync(self, data): - """Returns a deferred that is resolved when we receive a SYNC command - with given data. - - [Not currently] used by tests. - """ - return self.awaiting_syncs.setdefault(data, defer.Deferred()) - - def update_connection(self, connection): - """Called when a connection has been established (or lost with None). - """ - self.connection = connection - if connection: - for cmd in self.pending_commands: - connection.send_command(cmd) - self.pending_commands = [] - - def finished_connecting(self): - """Called when we have successfully subscribed and caught up to all - streams we're interested in. - """ - logger.info("Finished connecting to server") + async def on_position(self, stream_name: str, token: int): + self.store.process_replication_rows(stream_name, token, []) - # We don't reset the delay any earlier as otherwise if there is a - # problem during start up we'll end up tight looping connecting to the - # server. - if self.factory: - self.factory.resetDelay() + def on_remote_server_up(self, server: str): + """Called when get a new REMOTE_SERVER_UP command.""" diff --git a/synapse/replication/tcp/handler.py b/synapse/replication/tcp/handler.py new file mode 100644 index 0000000000..12a1cfd6d1 --- /dev/null +++ b/synapse/replication/tcp/handler.py @@ -0,0 +1,252 @@ +# -*- coding: utf-8 -*- +# Copyright 2017 Vector Creations Ltd +# Copyright 2020 The Matrix.org Foundation C.I.C. +# +# 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 typing import Any, Callable, Dict, List, Optional, Set + +from prometheus_client import Counter + +from synapse.replication.tcp.client import ReplicationClientFactory +from synapse.replication.tcp.commands import ( + Command, + FederationAckCommand, + InvalidateCacheCommand, + PositionCommand, + RdataCommand, + RemoteServerUpCommand, + RemovePusherCommand, + SyncCommand, + UserIpCommand, + UserSyncCommand, +) +from synapse.replication.tcp.streams import STREAMS_MAP, Stream +from synapse.util.async_helpers import Linearizer + +logger = logging.getLogger(__name__) + + +# number of updates received for each RDATA stream +inbound_rdata_count = Counter( + "synapse_replication_tcp_protocol_inbound_rdata_count", "", ["stream_name"] +) + + +class ReplicationCommandHandler: + """Handles incoming commands from replication as well as sending commands + back out to connections. + """ + + def __init__(self, hs): + self._replication_data_handler = hs.get_replication_data_handler() + self._presence_handler = hs.get_presence_handler() + + # Set of streams that we've caught up with. + self._streams_connected = set() # type: Set[str] + + self._streams = { + stream.NAME: stream(hs) for stream in STREAMS_MAP.values() + } # type: Dict[str, Stream] + + self._position_linearizer = Linearizer("replication_position") + + # Map of stream to batched updates. See RdataCommand for info on how + # batching works. + self._pending_batches = {} # type: Dict[str, List[Any]] + + # The factory used to create connections. + self._factory = None # type: Optional[ReplicationClientFactory] + + # The current connection. None if we are currently (re)connecting + self._connection = None + + def start_replication(self, hs): + """Helper method to start a replication connection to the remote server + using TCP. + """ + client_name = hs.config.worker_name + self._factory = ReplicationClientFactory(hs, client_name, self) + host = hs.config.worker_replication_host + port = hs.config.worker_replication_port + hs.get_reactor().connectTCP(host, port, self._factory) + + async def on_RDATA(self, cmd: RdataCommand): + stream_name = cmd.stream_name + inbound_rdata_count.labels(stream_name).inc() + + try: + row = STREAMS_MAP[stream_name].parse_row(cmd.row) + except Exception: + logger.exception("Failed to parse RDATA: %r %r", stream_name, cmd.row) + raise + + if cmd.token is None or stream_name not in self._streams_connected: + # I.e. either this is part of a batch of updates for this stream (in + # which case batch until we get an update for the stream with a non + # None token) or we're currently connecting so we queue up rows. + self._pending_batches.setdefault(stream_name, []).append(row) + else: + # Check if this is the last of a batch of updates + rows = self._pending_batches.pop(stream_name, []) + rows.append(row) + await self.on_rdata(stream_name, cmd.token, rows) + + async def on_rdata(self, stream_name: str, token: int, rows: list): + """Called to handle a batch of replication data with a given stream token. + + Args: + stream_name: name of the replication stream for this batch of rows + token: stream token for this batch of rows + rows: a list of Stream.ROW_TYPE objects as returned by + Stream.parse_row. + """ + logger.debug("Received rdata %s -> %s", stream_name, token) + await self._replication_data_handler.on_rdata(stream_name, token, rows) + + async def on_POSITION(self, cmd: PositionCommand): + stream = self._streams.get(cmd.stream_name) + if not stream: + logger.error("Got POSITION for unknown stream: %s", cmd.stream_name) + return + + # We protect catching up with a linearizer in case the replication + # connection reconnects under us. + with await self._position_linearizer.queue(cmd.stream_name): + # We're about to go and catch up with the stream, so mark as connecting + # to stop RDATA being handled at the same time by removing stream from + # list of connected streams. We also clear any batched up RDATA from + # before we got the POSITION. + self._streams_connected.discard(cmd.stream_name) + self._pending_batches.clear() + + # Find where we previously streamed up to. + current_token = self._replication_data_handler.get_streams_to_replicate().get( + cmd.stream_name + ) + if current_token is None: + logger.warning( + "Got POSITION for stream we're not subscribed to: %s", + cmd.stream_name, + ) + return + + # Fetch all updates between then and now. + limited = True + while limited: + updates, current_token, limited = await stream.get_updates_since( + current_token, cmd.token + ) + if updates: + await self.on_rdata( + cmd.stream_name, + current_token, + [stream.parse_row(update[1]) for update in updates], + ) + + # We've now caught up to position sent to us, notify handler. + await self._replication_data_handler.on_position(cmd.stream_name, cmd.token) + + # Handle any RDATA that came in while we were catching up. + rows = self._pending_batches.pop(cmd.stream_name, []) + if rows: + await self._replication_data_handler.on_rdata( + cmd.stream_name, rows[-1].token, rows + ) + + self._streams_connected.add(cmd.stream_name) + + async def on_SYNC(self, cmd: SyncCommand): + pass + + async def on_REMOTE_SERVER_UP(self, cmd: RemoteServerUpCommand): + """"Called when get a new REMOTE_SERVER_UP command.""" + self._replication_data_handler.on_remote_server_up(cmd.data) + + def get_currently_syncing_users(self): + """Get the list of currently syncing users (if any). This is called + when a connection has been established and we need to send the + currently syncing users. + """ + return self._presence_handler.get_currently_syncing_users() + + def update_connection(self, connection): + """Called when a connection has been established (or lost with None). + """ + self._connection = connection + + def finished_connecting(self): + """Called when we have successfully subscribed and caught up to all + streams we're interested in. + """ + logger.info("Finished connecting to server") + + # We don't reset the delay any earlier as otherwise if there is a + # problem during start up we'll end up tight looping connecting to the + # server. + if self._factory: + self._factory.resetDelay() + + def send_command(self, cmd: Command): + """Send a command to master (when we get establish a connection if we + don't have one already.) + """ + if self._connection: + self._connection.send_command(cmd) + else: + logger.warning("Dropping command as not connected: %r", cmd.NAME) + + def send_federation_ack(self, token: int): + """Ack data for the federation stream. This allows the master to drop + data stored purely in memory. + """ + self.send_command(FederationAckCommand(token)) + + def send_user_sync( + self, instance_id: str, user_id: str, is_syncing: bool, last_sync_ms: int + ): + """Poke the master that a user has started/stopped syncing. + """ + self.send_command( + UserSyncCommand(instance_id, user_id, is_syncing, last_sync_ms) + ) + + def send_remove_pusher(self, app_id: str, push_key: str, user_id: str): + """Poke the master to remove a pusher for a user + """ + cmd = RemovePusherCommand(app_id, push_key, user_id) + self.send_command(cmd) + + def send_invalidate_cache(self, cache_func: Callable, keys: tuple): + """Poke the master to invalidate a cache. + """ + cmd = InvalidateCacheCommand(cache_func.__name__, keys) + self.send_command(cmd) + + def send_user_ip( + self, + user_id: str, + access_token: str, + ip: str, + user_agent: str, + device_id: str, + last_seen: int, + ): + """Tell the master that the user made a request. + """ + cmd = UserIpCommand(user_id, access_token, ip, user_agent, device_id, last_seen) + self.send_command(cmd) + + def send_remote_server_up(self, server: str): + self.send_command(RemoteServerUpCommand(server)) diff --git a/synapse/replication/tcp/protocol.py b/synapse/replication/tcp/protocol.py index dae246825f..f2a37f568e 100644 --- a/synapse/replication/tcp/protocol.py +++ b/synapse/replication/tcp/protocol.py @@ -46,12 +46,11 @@ indicate which side is sending, these are *not* included on the wire:: > ERROR server stopping * connection closed by server * """ -import abc import fcntl import logging import struct from collections import defaultdict -from typing import Any, DefaultDict, Dict, List, Set +from typing import TYPE_CHECKING, DefaultDict, List from six import iteritems @@ -78,13 +77,12 @@ from synapse.replication.tcp.commands import ( SyncCommand, UserSyncCommand, ) -from synapse.replication.tcp.streams import STREAMS_MAP, Stream from synapse.types import Collection from synapse.util import Clock from synapse.util.stringutils import random_string -MYPY = False -if MYPY: +if TYPE_CHECKING: + from synapse.replication.tcp.handler import ReplicationCommandHandler from synapse.server import HomeServer @@ -475,71 +473,6 @@ class ServerReplicationStreamProtocol(BaseReplicationStreamProtocol): self.streamer.lost_connection(self) -class AbstractReplicationClientHandler(metaclass=abc.ABCMeta): - """ - The interface for the handler that should be passed to - ClientReplicationStreamProtocol - """ - - @abc.abstractmethod - async def on_rdata(self, stream_name, token, rows): - """Called to handle a batch of replication data with a given stream token. - - Args: - stream_name (str): name of the replication stream for this batch of rows - token (int): stream token for this batch of rows - rows (list): a list of Stream.ROW_TYPE objects as returned by - Stream.parse_row. - """ - raise NotImplementedError() - - @abc.abstractmethod - async def on_position(self, stream_name, token): - """Called when we get new position data.""" - raise NotImplementedError() - - @abc.abstractmethod - def on_sync(self, data): - """Called when get a new SYNC command.""" - raise NotImplementedError() - - @abc.abstractmethod - async def on_remote_server_up(self, server: str): - """Called when get a new REMOTE_SERVER_UP command.""" - raise NotImplementedError() - - @abc.abstractmethod - def get_streams_to_replicate(self): - """Called when a new connection has been established and we need to - subscribe to streams. - - Returns: - map from stream name to the most recent update we have for - that stream (ie, the point we want to start replicating from) - """ - raise NotImplementedError() - - @abc.abstractmethod - def get_currently_syncing_users(self): - """Get the list of currently syncing users (if any). This is called - when a connection has been established and we need to send the - currently syncing users.""" - raise NotImplementedError() - - @abc.abstractmethod - def update_connection(self, connection): - """Called when a connection has been established (or lost with None). - """ - raise NotImplementedError() - - @abc.abstractmethod - def finished_connecting(self): - """Called when we have successfully subscribed and caught up to all - streams we're interested in. - """ - raise NotImplementedError() - - class ClientReplicationStreamProtocol(BaseReplicationStreamProtocol): VALID_INBOUND_COMMANDS = VALID_SERVER_COMMANDS VALID_OUTBOUND_COMMANDS = VALID_CLIENT_COMMANDS @@ -550,7 +483,7 @@ class ClientReplicationStreamProtocol(BaseReplicationStreamProtocol): client_name: str, server_name: str, clock: Clock, - handler: AbstractReplicationClientHandler, + command_handler: "ReplicationCommandHandler", ): BaseReplicationStreamProtocol.__init__(self, clock) @@ -558,20 +491,7 @@ class ClientReplicationStreamProtocol(BaseReplicationStreamProtocol): self.client_name = client_name self.server_name = server_name - self.handler = handler - - self.streams = { - stream.NAME: stream(hs) for stream in STREAMS_MAP.values() - } # type: Dict[str, Stream] - - # Set of stream names that have been subscribe to, but haven't yet - # caught up with. This is used to track when the client has been fully - # connected to the remote. - self.streams_connecting = set(STREAMS_MAP) # type: Set[str] - - # Map of stream to batched updates. See RdataCommand for info on how - # batching works. - self.pending_batches = {} # type: Dict[str, List[Any]] + self.handler = command_handler def connectionMade(self): self.send_command(NameCommand(self.client_name)) @@ -589,89 +509,39 @@ class ClientReplicationStreamProtocol(BaseReplicationStreamProtocol): # We've now finished connecting to so inform the client handler self.handler.update_connection(self) + self.handler.finished_connecting() - async def on_SERVER(self, cmd): - if cmd.data != self.server_name: - logger.error("[%s] Connected to wrong remote: %r", self.id(), cmd.data) - self.send_error("Wrong remote") - - async def on_RDATA(self, cmd): - stream_name = cmd.stream_name - inbound_rdata_count.labels(stream_name).inc() - - try: - row = STREAMS_MAP[stream_name].parse_row(cmd.row) - except Exception: - logger.exception( - "[%s] Failed to parse RDATA: %r %r", self.id(), stream_name, cmd.row - ) - raise - - if cmd.token is None or stream_name in self.streams_connecting: - # I.e. this is part of a batch of updates for this stream. Batch - # until we get an update for the stream with a non None token - self.pending_batches.setdefault(stream_name, []).append(row) - else: - # Check if this is the last of a batch of updates - rows = self.pending_batches.pop(stream_name, []) - rows.append(row) - await self.handler.on_rdata(stream_name, cmd.token, rows) - - async def on_POSITION(self, cmd: PositionCommand): - stream = self.streams.get(cmd.stream_name) - if not stream: - logger.error("Got POSITION for unknown stream: %s", cmd.stream_name) - return - - # Find where we previously streamed up to. - current_token = self.handler.get_streams_to_replicate().get(cmd.stream_name) - if current_token is None: - logger.warning( - "Got POSITION for stream we're not subscribed to: %s", cmd.stream_name - ) - return - - # Fetch all updates between then and now. - limited = True - while limited: - updates, current_token, limited = await stream.get_updates_since( - current_token, cmd.token - ) - - # Check if the connection was closed underneath us, if so we bail - # rather than risk having concurrent catch ups going on. - if self.state == ConnectionStates.CLOSED: - return - - if updates: - await self.handler.on_rdata( - cmd.stream_name, - current_token, - [stream.parse_row(update[1]) for update in updates], - ) + async def handle_command(self, cmd: Command): + """Handle a command we have received over the replication stream. - # We've now caught up to position sent to us, notify handler. - await self.handler.on_position(cmd.stream_name, cmd.token) + Delegates to `command_handler.on_`, which must return an + awaitable. - self.streams_connecting.discard(cmd.stream_name) - if not self.streams_connecting: - self.handler.finished_connecting() + Args: + cmd: received command + """ + handled = False - # Check if the connection was closed underneath us, if so we bail - # rather than risk having concurrent catch ups going on. - if self.state == ConnectionStates.CLOSED: - return + # First call any command handlers on this instance. These are for TCP + # specific handling. + cmd_func = getattr(self, "on_%s" % (cmd.NAME,), None) + if cmd_func: + await cmd_func(cmd) + handled = True - # Handle any RDATA that came in while we were catching up. - rows = self.pending_batches.pop(cmd.stream_name, []) - if rows: - await self.handler.on_rdata(cmd.stream_name, rows[-1].token, rows) + # Then call out to the handler. + cmd_func = getattr(self.handler, "on_%s" % (cmd.NAME,), None) + if cmd_func: + await cmd_func(cmd) + handled = True - async def on_SYNC(self, cmd): - self.handler.on_sync(cmd.data) + if not handled: + logger.warning("Unhandled command: %r", cmd) - async def on_REMOTE_SERVER_UP(self, cmd: RemoteServerUpCommand): - self.handler.on_remote_server_up(cmd.data) + async def on_SERVER(self, cmd): + if cmd.data != self.server_name: + logger.error("[%s] Connected to wrong remote: %r", self.id(), cmd.data) + self.send_error("Wrong remote") def replicate(self): """Send the subscription request to the server @@ -768,8 +638,3 @@ tcp_outbound_commands = LaterGauge( for k, count in iteritems(p.outbound_commands_counter) }, ) - -# number of updates received for each RDATA stream -inbound_rdata_count = Counter( - "synapse_replication_tcp_protocol_inbound_rdata_count", "", ["stream_name"] -) diff --git a/synapse/server.py b/synapse/server.py index 9228e1c892..9d273c980c 100644 --- a/synapse/server.py +++ b/synapse/server.py @@ -87,6 +87,8 @@ from synapse.http.matrixfederationclient import MatrixFederationHttpClient from synapse.notifier import Notifier from synapse.push.action_generator import ActionGenerator from synapse.push.pusherpool import PusherPool +from synapse.replication.tcp.client import ReplicationDataHandler +from synapse.replication.tcp.handler import ReplicationCommandHandler from synapse.replication.tcp.resource import ReplicationStreamer from synapse.rest.media.v1.media_repository import ( MediaRepository, @@ -206,6 +208,7 @@ class HomeServer(object): "password_policy_handler", "storage", "replication_streamer", + "replication_data_handler", ] REQUIRED_ON_MASTER_STARTUP = ["user_directory_handler", "stats_handler"] @@ -468,7 +471,7 @@ class HomeServer(object): return ReadMarkerHandler(self) def build_tcp_replication(self): - raise NotImplementedError() + return ReplicationCommandHandler(self) def build_action_generator(self): return ActionGenerator(self) @@ -562,6 +565,9 @@ class HomeServer(object): def build_replication_streamer(self) -> ReplicationStreamer: return ReplicationStreamer(self) + def build_replication_data_handler(self): + return ReplicationDataHandler(self.get_datastore()) + def remove_pusher(self, app_id, push_key, user_id): return self.get_pusherpool().remove_pusher(app_id, push_key, user_id) diff --git a/synapse/server.pyi b/synapse/server.pyi index 9d1dfa71e7..9013e9bac9 100644 --- a/synapse/server.pyi +++ b/synapse/server.pyi @@ -19,6 +19,7 @@ import synapse.handlers.set_password import synapse.http.client import synapse.notifier import synapse.replication.tcp.client +import synapse.replication.tcp.handler import synapse.rest.media.v1.media_repository import synapse.server_notices.server_notices_manager import synapse.server_notices.server_notices_sender @@ -106,7 +107,11 @@ class HomeServer(object): pass def get_tcp_replication( self, - ) -> synapse.replication.tcp.client.ReplicationClientHandler: + ) -> synapse.replication.tcp.handler.ReplicationCommandHandler: + pass + def get_replication_data_handler( + self, + ) -> synapse.replication.tcp.client.ReplicationDataHandler: pass def get_federation_registry( self, diff --git a/tests/replication/slave/storage/_base.py b/tests/replication/slave/storage/_base.py index 2a1e7c7166..8902a5ab69 100644 --- a/tests/replication/slave/storage/_base.py +++ b/tests/replication/slave/storage/_base.py @@ -17,8 +17,9 @@ from mock import Mock, NonCallableMock from synapse.replication.tcp.client import ( ReplicationClientFactory, - ReplicationClientHandler, + ReplicationDataHandler, ) +from synapse.replication.tcp.handler import ReplicationCommandHandler from synapse.replication.tcp.resource import ReplicationStreamProtocolFactory from synapse.storage.database import make_conn @@ -51,15 +52,19 @@ class BaseSlavedStoreTestCase(unittest.HomeserverTestCase): self.event_id = 0 server_factory = ReplicationStreamProtocolFactory(self.hs) - self.streamer = server_factory.streamer + self.streamer = hs.get_replication_streamer() - handler_factory = Mock() - self.replication_handler = ReplicationClientHandler(self.slaved_store) - self.replication_handler.factory = handler_factory + # We now do some gut wrenching so that we have a client that is based + # off of the slave store rather than the main store. + self.replication_handler = ReplicationCommandHandler(self.hs) + self.replication_handler._replication_data_handler = ReplicationDataHandler( + self.slaved_store + ) client_factory = ReplicationClientFactory( self.hs, "client_name", self.replication_handler ) + client_factory.handler = self.replication_handler server = server_factory.buildProtocol(None) client = client_factory.buildProtocol(None) diff --git a/tests/replication/tcp/streams/_base.py b/tests/replication/tcp/streams/_base.py index a755fe2879..32238fe79a 100644 --- a/tests/replication/tcp/streams/_base.py +++ b/tests/replication/tcp/streams/_base.py @@ -15,7 +15,7 @@ from mock import Mock -from synapse.replication.tcp.commands import ReplicateCommand +from synapse.replication.tcp.handler import ReplicationCommandHandler from synapse.replication.tcp.protocol import ClientReplicationStreamProtocol from synapse.replication.tcp.resource import ReplicationStreamProtocolFactory @@ -26,15 +26,20 @@ from tests.server import FakeTransport class BaseStreamTestCase(unittest.HomeserverTestCase): """Base class for tests of the replication streams""" + def make_homeserver(self, reactor, clock): + self.test_handler = Mock(wraps=TestReplicationDataHandler()) + return self.setup_test_homeserver(replication_data_handler=self.test_handler) + def prepare(self, reactor, clock, hs): # build a replication server - server_factory = ReplicationStreamProtocolFactory(self.hs) - self.streamer = server_factory.streamer + server_factory = ReplicationStreamProtocolFactory(hs) + self.streamer = hs.get_replication_streamer() self.server = server_factory.buildProtocol(None) - self.test_handler = Mock(wraps=TestReplicationClientHandler()) + repl_handler = ReplicationCommandHandler(hs) + repl_handler.handler = self.test_handler self.client = ClientReplicationStreamProtocol( - hs, "client", "test", clock, self.test_handler, + hs, "client", "test", clock, repl_handler, ) self._client_transport = None @@ -69,13 +74,9 @@ class BaseStreamTestCase(unittest.HomeserverTestCase): self.streamer.on_notifier_poke() self.pump(0.1) - def replicate_stream(self): - """Make the client end a REPLICATE command to set up a subscription to a stream""" - self.client.send_command(ReplicateCommand()) - -class TestReplicationClientHandler(object): - """Drop-in for ReplicationClientHandler which just collects RDATA rows""" +class TestReplicationDataHandler: + """Drop-in for ReplicationDataHandler which just collects RDATA rows""" def __init__(self): self.streams = set() @@ -88,18 +89,9 @@ class TestReplicationClientHandler(object): positions[stream] = max(token, positions.get(stream, 0)) return positions - def get_currently_syncing_users(self): - return [] - - def update_connection(self, connection): - pass - - def finished_connecting(self): - pass - - async def on_position(self, stream_name, token): - """Called when we get new position data.""" - async def on_rdata(self, stream_name, token, rows): for r in rows: self._received_rdata_rows.append((stream_name, token, r)) + + async def on_position(self, stream_name, token): + pass diff --git a/tests/replication/tcp/streams/test_receipts.py b/tests/replication/tcp/streams/test_receipts.py index 0ec0825a0e..a0206f7363 100644 --- a/tests/replication/tcp/streams/test_receipts.py +++ b/tests/replication/tcp/streams/test_receipts.py @@ -24,7 +24,6 @@ class ReceiptsStreamTestCase(BaseStreamTestCase): self.reconnect() # make the client subscribe to the receipts stream - self.replicate_stream() self.test_handler.streams.add("receipts") # tell the master to send a new receipt -- cgit 1.5.1 From 37f6823f5b91f27b9dd8de8fc0e52d5ea889647c Mon Sep 17 00:00:00 2001 From: Erik Johnston Date: Wed, 29 Apr 2020 16:23:08 +0100 Subject: Add instance name to RDATA/POSITION commands (#7364) This is primarily for allowing us to send those commands from workers, but for now simply allows us to ignore echoed RDATA/POSITION commands that we sent (we get echoes of sent commands when using redis). Currently we log a WARNING on the master process every time we receive an echoed RDATA. --- changelog.d/7364.misc | 1 + docs/tcp_replication.md | 41 +++++++++++++++++++------------- synapse/app/_base.py | 4 ++-- synapse/logging/opentracing.py | 23 ++++++++---------- synapse/replication/tcp/commands.py | 37 +++++++++++++++++++--------- synapse/replication/tcp/handler.py | 17 ++++++++++--- synapse/server.py | 13 ++++++++-- synapse/server.pyi | 2 ++ tests/replication/slave/storage/_base.py | 1 + tests/replication/tcp/test_commands.py | 6 +++-- 10 files changed, 95 insertions(+), 50 deletions(-) create mode 100644 changelog.d/7364.misc (limited to 'synapse/server.py') diff --git a/changelog.d/7364.misc b/changelog.d/7364.misc new file mode 100644 index 0000000000..bb5d727cf4 --- /dev/null +++ b/changelog.d/7364.misc @@ -0,0 +1 @@ +Add an `instance_name` to `RDATA` and `POSITION` replication commands. diff --git a/docs/tcp_replication.md b/docs/tcp_replication.md index b922d9cf7e..ab2fffbfe4 100644 --- a/docs/tcp_replication.md +++ b/docs/tcp_replication.md @@ -15,15 +15,17 @@ example flow would be (where '>' indicates master to worker and > SERVER example.com < REPLICATE - > POSITION events 53 - > RDATA events 54 ["$foo1:bar.com", ...] - > RDATA events 55 ["$foo4:bar.com", ...] + > POSITION events master 53 + > RDATA events master 54 ["$foo1:bar.com", ...] + > RDATA events master 55 ["$foo4:bar.com", ...] The example shows the server accepting a new connection and sending its identity with the `SERVER` command, followed by the client server to respond with the position of all streams. The server then periodically sends `RDATA` commands -which have the format `RDATA `, where the format of -`` is defined by the individual streams. +which have the format `RDATA `, where +the format of `` is defined by the individual streams. The +`` is the name of the Synapse process that generated the data +(usually "master"). Error reporting happens by either the client or server sending an ERROR command, and usually the connection will be closed. @@ -52,7 +54,7 @@ The basic structure of the protocol is line based, where the initial word of each line specifies the command. The rest of the line is parsed based on the command. For example, the RDATA command is defined as: - RDATA + RDATA (Note that may contains spaces, but cannot contain newlines.) @@ -136,11 +138,11 @@ the wire: < NAME synapse.app.appservice < PING 1490197665618 < REPLICATE - > POSITION events 1 - > POSITION backfill 1 - > POSITION caches 1 - > RDATA caches 2 ["get_user_by_id",["@01register-user:localhost:8823"],1490197670513] - > RDATA events 14 ["$149019767112vOHxz:localhost:8823", + > POSITION events master 1 + > POSITION backfill master 1 + > POSITION caches master 1 + > RDATA caches master 2 ["get_user_by_id",["@01register-user:localhost:8823"],1490197670513] + > RDATA events master 14 ["$149019767112vOHxz:localhost:8823", "!AFDCvgApUmpdfVjIXm:localhost:8823","m.room.guest_access","",null] < PING 1490197675618 > ERROR server stopping @@ -151,10 +153,10 @@ position without needing to send data with the `RDATA` command. An example of a batched set of `RDATA` is: - > RDATA caches batch ["get_user_by_id",["@test:localhost:8823"],1490197670513] - > RDATA caches batch ["get_user_by_id",["@test2:localhost:8823"],1490197670513] - > RDATA caches batch ["get_user_by_id",["@test3:localhost:8823"],1490197670513] - > RDATA caches 54 ["get_user_by_id",["@test4:localhost:8823"],1490197670513] + > RDATA caches master batch ["get_user_by_id",["@test:localhost:8823"],1490197670513] + > RDATA caches master batch ["get_user_by_id",["@test2:localhost:8823"],1490197670513] + > RDATA caches master batch ["get_user_by_id",["@test3:localhost:8823"],1490197670513] + > RDATA caches master 54 ["get_user_by_id",["@test4:localhost:8823"],1490197670513] In this case the client shouldn't advance their caches token until it sees the the last `RDATA`. @@ -178,6 +180,11 @@ client (C): updates, and if so then fetch them out of band. Sent in response to a REPLICATE command (but can happen at any time). + The POSITION command includes the source of the stream. Currently all streams + are written by a single process (usually "master"). If fetching missing + updates via HTTP API, rather than via the DB, then processes should make the + request to the appropriate process. + #### ERROR (S, C) There was an error @@ -234,12 +241,12 @@ Each individual cache invalidation results in a row being sent down replication, which includes the cache name (the name of the function) and they key to invalidate. For example: - > RDATA caches 550953771 ["get_user_by_id", ["@bob:example.com"], 1550574873251] + > RDATA caches master 550953771 ["get_user_by_id", ["@bob:example.com"], 1550574873251] Alternatively, an entire cache can be invalidated by sending down a `null` instead of the key. For example: - > RDATA caches 550953772 ["get_user_by_id", null, 1550574873252] + > RDATA caches master 550953772 ["get_user_by_id", null, 1550574873252] However, there are times when a number of caches need to be invalidated at the same time with the same key. To reduce traffic we batch those diff --git a/synapse/app/_base.py b/synapse/app/_base.py index 4d84f4595a..628292b890 100644 --- a/synapse/app/_base.py +++ b/synapse/app/_base.py @@ -270,7 +270,7 @@ def start(hs, listeners=None): # Start the tracer synapse.logging.opentracing.init_tracer( # type: ignore[attr-defined] # noqa - hs.config + hs ) # It is now safe to start your Synapse. @@ -316,7 +316,7 @@ def setup_sentry(hs): scope.set_tag("matrix_server_name", hs.config.server_name) app = hs.config.worker_app if hs.config.worker_app else "synapse.app.homeserver" - name = hs.config.worker_name if hs.config.worker_name else "master" + name = hs.get_instance_name() scope.set_tag("worker_app", app) scope.set_tag("worker_name", name) diff --git a/synapse/logging/opentracing.py b/synapse/logging/opentracing.py index 0638cec429..5dddf57008 100644 --- a/synapse/logging/opentracing.py +++ b/synapse/logging/opentracing.py @@ -171,7 +171,7 @@ import logging import re import types from functools import wraps -from typing import Dict +from typing import TYPE_CHECKING, Dict from canonicaljson import json @@ -179,6 +179,9 @@ from twisted.internet import defer from synapse.config import ConfigError +if TYPE_CHECKING: + from synapse.server import HomeServer + # Helper class @@ -297,14 +300,11 @@ def _noop_context_manager(*args, **kwargs): # Setup -def init_tracer(config): +def init_tracer(hs: "HomeServer"): """Set the whitelists and initialise the JaegerClient tracer - - Args: - config (HomeserverConfig): The config used by the homeserver """ global opentracing - if not config.opentracer_enabled: + if not hs.config.opentracer_enabled: # We don't have a tracer opentracing = None return @@ -315,18 +315,15 @@ def init_tracer(config): "installed." ) - # Include the worker name - name = config.worker_name if config.worker_name else "master" - # Pull out the jaeger config if it was given. Otherwise set it to something sensible. # See https://github.com/jaegertracing/jaeger-client-python/blob/master/jaeger_client/config.py - set_homeserver_whitelist(config.opentracer_whitelist) + set_homeserver_whitelist(hs.config.opentracer_whitelist) JaegerConfig( - config=config.jaeger_config, - service_name="{} {}".format(config.server_name, name), - scope_manager=LogContextScopeManager(config), + config=hs.config.jaeger_config, + service_name="{} {}".format(hs.config.server_name, hs.get_instance_name()), + scope_manager=LogContextScopeManager(hs.config), ).initialize_tracer() diff --git a/synapse/replication/tcp/commands.py b/synapse/replication/tcp/commands.py index c7880d4b63..f58e384d17 100644 --- a/synapse/replication/tcp/commands.py +++ b/synapse/replication/tcp/commands.py @@ -95,7 +95,7 @@ class RdataCommand(Command): Format:: - RDATA + RDATA The `` may either be a numeric stream id OR "batch". The latter case is used to support sending multiple updates with the same stream ID. This @@ -105,33 +105,40 @@ class RdataCommand(Command): The client should batch all incoming RDATA with a token of "batch" (per stream_name) until it sees an RDATA with a numeric stream ID. + The `` is the source of the new data (usually "master"). + `` of "batch" maps to the instance variable `token` being None. An example of a batched series of RDATA:: - RDATA presence batch ["@foo:example.com", "online", ...] - RDATA presence batch ["@bar:example.com", "online", ...] - RDATA presence 59 ["@baz:example.com", "online", ...] + RDATA presence master batch ["@foo:example.com", "online", ...] + RDATA presence master batch ["@bar:example.com", "online", ...] + RDATA presence master 59 ["@baz:example.com", "online", ...] """ NAME = "RDATA" - def __init__(self, stream_name, token, row): + def __init__(self, stream_name, instance_name, token, row): self.stream_name = stream_name + self.instance_name = instance_name self.token = token self.row = row @classmethod def from_line(cls, line): - stream_name, token, row_json = line.split(" ", 2) + stream_name, instance_name, token, row_json = line.split(" ", 3) return cls( - stream_name, None if token == "batch" else int(token), json.loads(row_json) + stream_name, + instance_name, + None if token == "batch" else int(token), + json.loads(row_json), ) def to_line(self): return " ".join( ( self.stream_name, + self.instance_name, str(self.token) if self.token is not None else "batch", _json_encoder.encode(self.row), ) @@ -145,23 +152,31 @@ class PositionCommand(Command): """Sent by the server to tell the client the stream postition without needing to send an RDATA. + Format:: + + POSITION + On receipt of a POSITION command clients should check if they have missed any updates, and if so then fetch them out of band. + + The `` is the process that sent the command and is the source + of the stream. """ NAME = "POSITION" - def __init__(self, stream_name, token): + def __init__(self, stream_name, instance_name, token): self.stream_name = stream_name + self.instance_name = instance_name self.token = token @classmethod def from_line(cls, line): - stream_name, token = line.split(" ", 1) - return cls(stream_name, int(token)) + stream_name, instance_name, token = line.split(" ", 2) + return cls(stream_name, instance_name, int(token)) def to_line(self): - return " ".join((self.stream_name, str(self.token))) + return " ".join((self.stream_name, self.instance_name, str(self.token))) class ErrorCommand(_SimpleCommand): diff --git a/synapse/replication/tcp/handler.py b/synapse/replication/tcp/handler.py index b8f49a8d0f..6f7054d5af 100644 --- a/synapse/replication/tcp/handler.py +++ b/synapse/replication/tcp/handler.py @@ -79,6 +79,7 @@ class ReplicationCommandHandler: self._notifier = hs.get_notifier() self._clock = hs.get_clock() self._instance_id = hs.get_instance_id() + self._instance_name = hs.get_instance_name() # Set of streams that we've caught up with. self._streams_connected = set() # type: Set[str] @@ -156,7 +157,7 @@ class ReplicationCommandHandler: hs.config.redis.redis_host, hs.config.redis.redis_port, self._factory, ) else: - client_name = hs.config.worker_name + client_name = hs.get_instance_name() self._factory = DirectTcpReplicationClientFactory(hs, client_name, self) host = hs.config.worker_replication_host port = hs.config.worker_replication_port @@ -170,7 +171,9 @@ class ReplicationCommandHandler: for stream_name, stream in self._streams.items(): current_token = stream.current_token() - self.send_command(PositionCommand(stream_name, current_token)) + self.send_command( + PositionCommand(stream_name, self._instance_name, current_token) + ) async def on_USER_SYNC(self, conn: AbstractConnection, cmd: UserSyncCommand): user_sync_counter.inc() @@ -235,6 +238,10 @@ class ReplicationCommandHandler: await self._server_notices_sender.on_user_ip(cmd.user_id) async def on_RDATA(self, conn: AbstractConnection, cmd: RdataCommand): + if cmd.instance_name == self._instance_name: + # Ignore RDATA that are just our own echoes + return + stream_name = cmd.stream_name inbound_rdata_count.labels(stream_name).inc() @@ -286,6 +293,10 @@ class ReplicationCommandHandler: await self._replication_data_handler.on_rdata(stream_name, token, rows) async def on_POSITION(self, conn: AbstractConnection, cmd: PositionCommand): + if cmd.instance_name == self._instance_name: + # Ignore POSITION that are just our own echoes + return + stream = self._streams.get(cmd.stream_name) if not stream: logger.error("Got POSITION for unknown stream: %s", cmd.stream_name) @@ -485,7 +496,7 @@ class ReplicationCommandHandler: We need to check if the client is interested in the stream or not """ - self.send_command(RdataCommand(stream_name, token, data)) + self.send_command(RdataCommand(stream_name, self._instance_name, token, data)) UpdateToken = TypeVar("UpdateToken") diff --git a/synapse/server.py b/synapse/server.py index 9d273c980c..bf97a16c09 100644 --- a/synapse/server.py +++ b/synapse/server.py @@ -234,7 +234,8 @@ class HomeServer(object): self._listening_services = [] self.start_time = None - self.instance_id = random_string(5) + self._instance_id = random_string(5) + self._instance_name = config.worker_name or "master" self.clock = Clock(reactor) self.distributor = Distributor() @@ -254,7 +255,15 @@ class HomeServer(object): This is used to distinguish running instances in worker-based deployments. """ - return self.instance_id + return self._instance_id + + def get_instance_name(self) -> str: + """A unique name for this synapse process. + + Used to identify the process over replication and in config. Does not + change over restarts. + """ + return self._instance_name def setup(self): logger.info("Setting up.") diff --git a/synapse/server.pyi b/synapse/server.pyi index fc5886f762..18043a2593 100644 --- a/synapse/server.pyi +++ b/synapse/server.pyi @@ -122,6 +122,8 @@ class HomeServer(object): pass def get_instance_id(self) -> str: pass + def get_instance_name(self) -> str: + pass def get_event_builder_factory(self) -> EventBuilderFactory: pass def get_storage(self) -> synapse.storage.Storage: diff --git a/tests/replication/slave/storage/_base.py b/tests/replication/slave/storage/_base.py index 395c7d0306..1615dfab5e 100644 --- a/tests/replication/slave/storage/_base.py +++ b/tests/replication/slave/storage/_base.py @@ -57,6 +57,7 @@ class BaseSlavedStoreTestCase(unittest.HomeserverTestCase): # We now do some gut wrenching so that we have a client that is based # off of the slave store rather than the main store. self.replication_handler = ReplicationCommandHandler(self.hs) + self.replication_handler._instance_name = "worker" self.replication_handler._replication_data_handler = ReplicationDataHandler( self.slaved_store ) diff --git a/tests/replication/tcp/test_commands.py b/tests/replication/tcp/test_commands.py index 3cbcb513cc..7ddfd0a733 100644 --- a/tests/replication/tcp/test_commands.py +++ b/tests/replication/tcp/test_commands.py @@ -28,15 +28,17 @@ class ParseCommandTestCase(TestCase): self.assertIsInstance(cmd, ReplicateCommand) def test_parse_rdata(self): - line = 'RDATA events 6287863 ["ev", ["$eventid", "!roomid", "type", null, null, null]]' + line = 'RDATA events master 6287863 ["ev", ["$eventid", "!roomid", "type", null, null, null]]' cmd = parse_command_from_line(line) self.assertIsInstance(cmd, RdataCommand) self.assertEqual(cmd.stream_name, "events") + self.assertEqual(cmd.instance_name, "master") self.assertEqual(cmd.token, 6287863) def test_parse_rdata_batch(self): - line = 'RDATA presence batch ["@foo:example.com", "online"]' + line = 'RDATA presence master batch ["@foo:example.com", "online"]' cmd = parse_command_from_line(line) self.assertIsInstance(cmd, RdataCommand) self.assertEqual(cmd.stream_name, "presence") + self.assertEqual(cmd.instance_name, "master") self.assertIsNone(cmd.token) -- cgit 1.5.1