diff options
| -rw-r--r-- | changelog.d/9978.feature | 1 | ||||
| -rw-r--r-- | docs/opentracing.md | 10 | ||||
| -rw-r--r-- | docs/sample_config.yaml | 20 | ||||
| -rw-r--r-- | synapse/api/auth.py | 5 | ||||
| -rw-r--r-- | synapse/config/tracer.py | 37 |
5 files changed, 56 insertions, 17 deletions
diff --git a/changelog.d/9978.feature b/changelog.d/9978.feature new file mode 100644 index 0000000000..851adb9f6e --- /dev/null +++ b/changelog.d/9978.feature @@ -0,0 +1 @@ +Add a configuration option which allows enabling opentracing by user id. diff --git a/docs/opentracing.md b/docs/opentracing.md index 4c7a56a5d7..f91362f112 100644 --- a/docs/opentracing.md +++ b/docs/opentracing.md @@ -42,17 +42,17 @@ To receive OpenTracing spans, start up a Jaeger server. This can be done using docker like so: ```sh -docker run -d --name jaeger +docker run -d --name jaeger \ -p 6831:6831/udp \ -p 6832:6832/udp \ -p 5778:5778 \ -p 16686:16686 \ -p 14268:14268 \ - jaegertracing/all-in-one:1.13 + jaegertracing/all-in-one:1 ``` Latest documentation is probably at -<https://www.jaegertracing.io/docs/1.13/getting-started/> +https://www.jaegertracing.io/docs/latest/getting-started. ## Enable OpenTracing in Synapse @@ -62,7 +62,7 @@ as shown in the [sample config](./sample_config.yaml). For example: ```yaml opentracing: - tracer_enabled: true + enabled: true homeserver_whitelist: - "mytrustedhomeserver.org" - "*.myotherhomeservers.com" @@ -90,4 +90,4 @@ to two problems, namely: ## Configuring Jaeger Sampling strategies can be set as in this document: -<https://www.jaegertracing.io/docs/1.13/sampling/> +<https://www.jaegertracing.io/docs/latest/sampling/>. diff --git a/docs/sample_config.yaml b/docs/sample_config.yaml index 67ad57b1aa..2952f2ba32 100644 --- a/docs/sample_config.yaml +++ b/docs/sample_config.yaml @@ -2845,7 +2845,8 @@ opentracing: #enabled: true # The list of homeservers we wish to send and receive span contexts and span baggage. - # See docs/opentracing.rst + # See docs/opentracing.rst. + # # This is a list of regexes which are matched against the server_name of the # homeserver. # @@ -2854,19 +2855,26 @@ opentracing: #homeserver_whitelist: # - ".*" + # A list of the matrix IDs of users whose requests will always be traced, + # even if the tracing system would otherwise drop the traces due to + # probabilistic sampling. + # + # By default, the list is empty. + # + #force_tracing_for_users: + # - "@user1:server_name" + # - "@user2:server_name" + # Jaeger can be configured to sample traces at different rates. # All configuration options provided by Jaeger can be set here. - # Jaeger's configuration mostly related to trace sampling which + # Jaeger's configuration is mostly related to trace sampling which # is documented here: - # https://www.jaegertracing.io/docs/1.13/sampling/. + # https://www.jaegertracing.io/docs/latest/sampling/. # #jaeger_config: # sampler: # type: const # param: 1 - - # Logging whether spans were started and reported - # # logging: # false diff --git a/synapse/api/auth.py b/synapse/api/auth.py index efc926d094..458306eba5 100644 --- a/synapse/api/auth.py +++ b/synapse/api/auth.py @@ -87,6 +87,7 @@ class Auth: ) self._track_appservice_user_ips = hs.config.track_appservice_user_ips self._macaroon_secret_key = hs.config.macaroon_secret_key + self._force_tracing_for_users = hs.config.tracing.force_tracing_for_users async def check_from_context( self, room_version: str, event, context, do_sig_check=True @@ -208,6 +209,8 @@ class Auth: opentracing.set_tag("authenticated_entity", user_id) opentracing.set_tag("user_id", user_id) opentracing.set_tag("appservice_id", app_service.id) + if user_id in self._force_tracing_for_users: + opentracing.set_tag(opentracing.tags.SAMPLING_PRIORITY, 1) return requester @@ -260,6 +263,8 @@ class Auth: opentracing.set_tag("user_id", user_info.user_id) if device_id: opentracing.set_tag("device_id", device_id) + if user_info.token_owner in self._force_tracing_for_users: + opentracing.set_tag(opentracing.tags.SAMPLING_PRIORITY, 1) return requester except KeyError: diff --git a/synapse/config/tracer.py b/synapse/config/tracer.py index db22b5b19f..d0ea17261f 100644 --- a/synapse/config/tracer.py +++ b/synapse/config/tracer.py @@ -12,6 +12,8 @@ # See the License for the specific language governing permissions and # limitations under the License. +from typing import Set + from synapse.python_dependencies import DependencyException, check_requirements from ._base import Config, ConfigError @@ -32,6 +34,8 @@ class TracerConfig(Config): {"sampler": {"type": "const", "param": 1}, "logging": False}, ) + self.force_tracing_for_users: Set[str] = set() + if not self.opentracer_enabled: return @@ -48,6 +52,19 @@ class TracerConfig(Config): if not isinstance(self.opentracer_whitelist, list): raise ConfigError("Tracer homeserver_whitelist config is malformed") + force_tracing_for_users = opentracing_config.get("force_tracing_for_users", []) + if not isinstance(force_tracing_for_users, list): + raise ConfigError( + "Expected a list", ("opentracing", "force_tracing_for_users") + ) + for i, u in enumerate(force_tracing_for_users): + if not isinstance(u, str): + raise ConfigError( + "Expected a string", + ("opentracing", "force_tracing_for_users", f"index {i}"), + ) + self.force_tracing_for_users.add(u) + def generate_config_section(cls, **kwargs): return """\ ## Opentracing ## @@ -64,7 +81,8 @@ class TracerConfig(Config): #enabled: true # The list of homeservers we wish to send and receive span contexts and span baggage. - # See docs/opentracing.rst + # See docs/opentracing.rst. + # # This is a list of regexes which are matched against the server_name of the # homeserver. # @@ -73,19 +91,26 @@ class TracerConfig(Config): #homeserver_whitelist: # - ".*" + # A list of the matrix IDs of users whose requests will always be traced, + # even if the tracing system would otherwise drop the traces due to + # probabilistic sampling. + # + # By default, the list is empty. + # + #force_tracing_for_users: + # - "@user1:server_name" + # - "@user2:server_name" + # Jaeger can be configured to sample traces at different rates. # All configuration options provided by Jaeger can be set here. - # Jaeger's configuration mostly related to trace sampling which + # Jaeger's configuration is mostly related to trace sampling which # is documented here: - # https://www.jaegertracing.io/docs/1.13/sampling/. + # https://www.jaegertracing.io/docs/latest/sampling/. # #jaeger_config: # sampler: # type: const # param: 1 - - # Logging whether spans were started and reported - # # logging: # false """ |