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-rw-r--r--synapse/__init__.py2
-rw-r--r--synapse/federation/transport/server.py4
-rw-r--r--synapse/http/server.py41
-rw-r--r--synapse/http/servlet.py4
-rw-r--r--synapse/replication/http/_base.py2
-rw-r--r--synapse/rest/admin/server_notice_servlet.py9
-rw-r--r--synapse/rest/client/v1/room.py37
-rw-r--r--synapse/rest/client/v2_alpha/relations.py2
8 files changed, 75 insertions, 26 deletions
diff --git a/synapse/__init__.py b/synapse/__init__.py
index f26e49da36..ca14545e4d 100644
--- a/synapse/__init__.py
+++ b/synapse/__init__.py
@@ -35,4 +35,4 @@ try:
 except ImportError:
     pass
 
-__version__ = "1.2.0rc1"
+__version__ = "1.2.0rc2"
diff --git a/synapse/federation/transport/server.py b/synapse/federation/transport/server.py
index 663264dec4..ea4e1b6d0f 100644
--- a/synapse/federation/transport/server.py
+++ b/synapse/federation/transport/server.py
@@ -325,7 +325,9 @@ class BaseFederationServlet(object):
             if code is None:
                 continue
 
-            server.register_paths(method, (pattern,), self._wrap(code))
+            server.register_paths(
+                method, (pattern,), self._wrap(code), self.__class__.__name__
+            )
 
 
 class FederationSendServlet(BaseFederationServlet):
diff --git a/synapse/http/server.py b/synapse/http/server.py
index 72a3d67eb6..e6f351ba3b 100644
--- a/synapse/http/server.py
+++ b/synapse/http/server.py
@@ -245,7 +245,9 @@ class JsonResource(HttpServer, resource.Resource):
 
     isLeaf = True
 
-    _PathEntry = collections.namedtuple("_PathEntry", ["pattern", "callback"])
+    _PathEntry = collections.namedtuple(
+        "_PathEntry", ["pattern", "callback", "servlet_classname"]
+    )
 
     def __init__(self, hs, canonical_json=True):
         resource.Resource.__init__(self)
@@ -255,12 +257,28 @@ class JsonResource(HttpServer, resource.Resource):
         self.path_regexs = {}
         self.hs = hs
 
-    def register_paths(self, method, path_patterns, callback):
+    def register_paths(self, method, path_patterns, callback, servlet_classname):
+        """
+        Registers a request handler against a regular expression. Later request URLs are
+        checked against these regular expressions in order to identify an appropriate
+        handler for that request.
+
+        Args:
+            method (str): GET, POST etc
+
+            path_patterns (Iterable[str]): A list of regular expressions to which
+                the request URLs are compared.
+
+            callback (function): The handler for the request. Usually a Servlet
+
+            servlet_classname (str): The name of the handler to be used in prometheus
+                and opentracing logs.
+        """
         method = method.encode("utf-8")  # method is bytes on py3
         for path_pattern in path_patterns:
             logger.debug("Registering for %s %s", method, path_pattern.pattern)
             self.path_regexs.setdefault(method, []).append(
-                self._PathEntry(path_pattern, callback)
+                self._PathEntry(path_pattern, callback, servlet_classname)
             )
 
     def render(self, request):
@@ -275,13 +293,9 @@ class JsonResource(HttpServer, resource.Resource):
             This checks if anyone has registered a callback for that method and
             path.
         """
-        callback, group_dict = self._get_handler_for_request(request)
+        callback, servlet_classname, group_dict = self._get_handler_for_request(request)
 
-        servlet_instance = getattr(callback, "__self__", None)
-        if servlet_instance is not None:
-            servlet_classname = servlet_instance.__class__.__name__
-        else:
-            servlet_classname = "%r" % callback
+        # Make sure we have a name for this handler in prometheus.
         request.request_metrics.name = servlet_classname
 
         # Now trigger the callback. If it returns a response, we send it
@@ -311,7 +325,8 @@ class JsonResource(HttpServer, resource.Resource):
             request (twisted.web.http.Request):
 
         Returns:
-            Tuple[Callable, dict[unicode, unicode]]: callback method, and the
+            Tuple[Callable, str, dict[unicode, unicode]]: callback method, the
+                label to use for that method in prometheus metrics, and the
                 dict mapping keys to path components as specified in the
                 handler's path match regexp.
 
@@ -320,7 +335,7 @@ class JsonResource(HttpServer, resource.Resource):
                 None, or a tuple of (http code, response body).
         """
         if request.method == b"OPTIONS":
-            return _options_handler, {}
+            return _options_handler, "options_request_handler", {}
 
         # Loop through all the registered callbacks to check if the method
         # and path regex match
@@ -328,10 +343,10 @@ class JsonResource(HttpServer, resource.Resource):
             m = path_entry.pattern.match(request.path.decode("ascii"))
             if m:
                 # We found a match!
-                return path_entry.callback, m.groupdict()
+                return path_entry.callback, path_entry.servlet_classname, m.groupdict()
 
         # Huh. No one wanted to handle that? Fiiiiiine. Send 400.
-        return _unrecognised_request_handler, {}
+        return _unrecognised_request_handler, "unrecognised_request_handler", {}
 
     def _send_response(
         self, request, code, response_json_object, response_code_message=None
diff --git a/synapse/http/servlet.py b/synapse/http/servlet.py
index 889038ff25..f0ca7d9aba 100644
--- a/synapse/http/servlet.py
+++ b/synapse/http/servlet.py
@@ -290,11 +290,13 @@ class RestServlet(object):
 
             for method in ("GET", "PUT", "POST", "OPTIONS", "DELETE"):
                 if hasattr(self, "on_%s" % (method,)):
+                    servlet_classname = self.__class__.__name__
                     method_handler = getattr(self, "on_%s" % (method,))
                     http_server.register_paths(
                         method,
                         patterns,
-                        trace_servlet(self.__class__.__name__, method_handler),
+                        trace_servlet(servlet_classname, method_handler),
+                        servlet_classname,
                     )
 
         else:
diff --git a/synapse/replication/http/_base.py b/synapse/replication/http/_base.py
index f5074b101a..2e0594e581 100644
--- a/synapse/replication/http/_base.py
+++ b/synapse/replication/http/_base.py
@@ -205,7 +205,7 @@ class ReplicationEndpoint(object):
         args = "/".join("(?P<%s>[^/]+)" % (arg,) for arg in url_args)
         pattern = re.compile("^/_synapse/replication/%s/%s$" % (self.NAME, args))
 
-        http_server.register_paths(method, [pattern], handler)
+        http_server.register_paths(method, [pattern], handler, self.__class__.__name__)
 
     def _cached_handler(self, request, txn_id, **kwargs):
         """Called on new incoming requests when caching is enabled. Checks
diff --git a/synapse/rest/admin/server_notice_servlet.py b/synapse/rest/admin/server_notice_servlet.py
index 90c0ee15dc..656526fea5 100644
--- a/synapse/rest/admin/server_notice_servlet.py
+++ b/synapse/rest/admin/server_notice_servlet.py
@@ -59,9 +59,14 @@ class SendServerNoticeServlet(RestServlet):
 
     def register(self, json_resource):
         PATTERN = "^/_synapse/admin/v1/send_server_notice"
-        json_resource.register_paths("POST", (re.compile(PATTERN + "$"),), self.on_POST)
         json_resource.register_paths(
-            "PUT", (re.compile(PATTERN + "/(?P<txn_id>[^/]*)$"),), self.on_PUT
+            "POST", (re.compile(PATTERN + "$"),), self.on_POST, self.__class__.__name__
+        )
+        json_resource.register_paths(
+            "PUT",
+            (re.compile(PATTERN + "/(?P<txn_id>[^/]*)$"),),
+            self.on_PUT,
+            self.__class__.__name__,
         )
 
     @defer.inlineCallbacks
diff --git a/synapse/rest/client/v1/room.py b/synapse/rest/client/v1/room.py
index 012e7a44a6..6fe1eddcce 100644
--- a/synapse/rest/client/v1/room.py
+++ b/synapse/rest/client/v1/room.py
@@ -67,11 +67,17 @@ class RoomCreateRestServlet(TransactionRestServlet):
         register_txn_path(self, PATTERNS, http_server)
         # define CORS for all of /rooms in RoomCreateRestServlet for simplicity
         http_server.register_paths(
-            "OPTIONS", client_patterns("/rooms(?:/.*)?$", v1=True), self.on_OPTIONS
+            "OPTIONS",
+            client_patterns("/rooms(?:/.*)?$", v1=True),
+            self.on_OPTIONS,
+            self.__class__.__name__,
         )
         # define CORS for /createRoom[/txnid]
         http_server.register_paths(
-            "OPTIONS", client_patterns("/createRoom(?:/.*)?$", v1=True), self.on_OPTIONS
+            "OPTIONS",
+            client_patterns("/createRoom(?:/.*)?$", v1=True),
+            self.on_OPTIONS,
+            self.__class__.__name__,
         )
 
     def on_PUT(self, request, txn_id):
@@ -116,16 +122,28 @@ class RoomStateEventRestServlet(TransactionRestServlet):
         )
 
         http_server.register_paths(
-            "GET", client_patterns(state_key, v1=True), self.on_GET
+            "GET",
+            client_patterns(state_key, v1=True),
+            self.on_GET,
+            self.__class__.__name__,
         )
         http_server.register_paths(
-            "PUT", client_patterns(state_key, v1=True), self.on_PUT
+            "PUT",
+            client_patterns(state_key, v1=True),
+            self.on_PUT,
+            self.__class__.__name__,
         )
         http_server.register_paths(
-            "GET", client_patterns(no_state_key, v1=True), self.on_GET_no_state_key
+            "GET",
+            client_patterns(no_state_key, v1=True),
+            self.on_GET_no_state_key,
+            self.__class__.__name__,
         )
         http_server.register_paths(
-            "PUT", client_patterns(no_state_key, v1=True), self.on_PUT_no_state_key
+            "PUT",
+            client_patterns(no_state_key, v1=True),
+            self.on_PUT_no_state_key,
+            self.__class__.__name__,
         )
 
     def on_GET_no_state_key(self, request, room_id, event_type):
@@ -845,18 +863,23 @@ def register_txn_path(servlet, regex_string, http_server, with_get=False):
         with_get: True to also register respective GET paths for the PUTs.
     """
     http_server.register_paths(
-        "POST", client_patterns(regex_string + "$", v1=True), servlet.on_POST
+        "POST",
+        client_patterns(regex_string + "$", v1=True),
+        servlet.on_POST,
+        servlet.__class__.__name__,
     )
     http_server.register_paths(
         "PUT",
         client_patterns(regex_string + "/(?P<txn_id>[^/]*)$", v1=True),
         servlet.on_PUT,
+        servlet.__class__.__name__,
     )
     if with_get:
         http_server.register_paths(
             "GET",
             client_patterns(regex_string + "/(?P<txn_id>[^/]*)$", v1=True),
             servlet.on_GET,
+            servlet.__class__.__name__,
         )
 
 
diff --git a/synapse/rest/client/v2_alpha/relations.py b/synapse/rest/client/v2_alpha/relations.py
index 6fde3decdb..1538b247e5 100644
--- a/synapse/rest/client/v2_alpha/relations.py
+++ b/synapse/rest/client/v2_alpha/relations.py
@@ -72,11 +72,13 @@ class RelationSendServlet(RestServlet):
             "POST",
             client_patterns(self.PATTERN + "$", releases=()),
             self.on_PUT_or_POST,
+            self.__class__.__name__,
         )
         http_server.register_paths(
             "PUT",
             client_patterns(self.PATTERN + "/(?P<txn_id>[^/]*)$", releases=()),
             self.on_PUT,
+            self.__class__.__name__,
         )
 
     def on_PUT(self, request, *args, **kwargs):