Record more information into structured logs. (#9654)

Records additional request information into the structured logs,
e.g. the requester, IP address, etc.

tests/logging/test_terse_json.py

@@ -12,15 +12,20 @@
 # 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
 import logging
-from io import StringIO
+from io import BytesIO, StringIO
 
+from mock import Mock, patch
+
+from twisted.web.server import Request
+
+from synapse.http.site import SynapseRequest
 from synapse.logging._terse_json import JsonFormatter, TerseJsonFormatter
 from synapse.logging.context import LoggingContext, LoggingContextFilter
 
 from tests.logging import LoggerCleanupMixin
+from tests.server import FakeChannel
 from tests.unittest import TestCase
 
 
@@ -120,7 +125,7 @@ class TerseJsonTestCase(LoggerCleanupMixin, TestCase):
         handler.addFilter(LoggingContextFilter())
         logger = self.get_logger(handler)
 
-        with LoggingContext(request="test"):
+        with LoggingContext("name"):
             logger.info("Hello there, %s!", "wally")
 
         log = self.get_log_line()
@@ -134,4 +139,61 @@ class TerseJsonTestCase(LoggerCleanupMixin, TestCase):
         ]
         self.assertCountEqual(log.keys(), expected_log_keys)
         self.assertEqual(log["log"], "Hello there, wally!")
-        self.assertEqual(log["request"], "test")
+        self.assertTrue(log["request"].startswith("name@"))
+
+    def test_with_request_context(self):
+        """
+        Information from the logging context request should be added to the JSON response.
+        """
+        handler = logging.StreamHandler(self.output)
+        handler.setFormatter(JsonFormatter())
+        handler.addFilter(LoggingContextFilter())
+        logger = self.get_logger(handler)
+
+        # A full request isn't needed here.
+        site = Mock(spec=["site_tag", "server_version_string", "getResourceFor"])
+        site.site_tag = "test-site"
+        site.server_version_string = "Server v1"
+        request = SynapseRequest(FakeChannel(site, None))
+        # Call requestReceived to finish instantiating the object.
+        request.content = BytesIO()
+        # Partially skip some of the internal processing of SynapseRequest.
+        request._started_processing = Mock()
+        request.request_metrics = Mock(spec=["name"])
+        with patch.object(Request, "render"):
+            request.requestReceived(b"POST", b"/_matrix/client/versions", b"1.1")
+
+        # Also set the requester to ensure the processing works.
+        request.requester = "@foo:test"
+
+        with LoggingContext(parent_context=request.logcontext):
+            logger.info("Hello there, %s!", "wally")
+
+        log = self.get_log_line()
+
+        # The terse logger includes additional request information, if possible.
+        expected_log_keys = [
+            "log",
+            "level",
+            "namespace",
+            "request",
+            "ip_address",
+            "site_tag",
+            "requester",
+            "authenticated_entity",
+            "method",
+            "url",
+            "protocol",
+            "user_agent",
+        ]
+        self.assertCountEqual(log.keys(), expected_log_keys)
+        self.assertEqual(log["log"], "Hello there, wally!")
+        self.assertTrue(log["request"].startswith("POST-"))
+        self.assertEqual(log["ip_address"], "127.0.0.1")
+        self.assertEqual(log["site_tag"], "test-site")
+        self.assertEqual(log["requester"], "@foo:test")
+        self.assertEqual(log["authenticated_entity"], "@foo:test")
+        self.assertEqual(log["method"], "POST")
+        self.assertEqual(log["url"], "/_matrix/client/versions")
+        self.assertEqual(log["protocol"], "1.1")
+        self.assertEqual(log["user_agent"], "")