Merge branch 'develop' of github.com:matrix-org/synapse into erikj/separate_event_creation

CHANGES.rst

@@ -1,3 +1,10 @@
+Unreleased
+==========
+
+synctl no longer starts the main synapse when using ``-a`` option with workers.
+A new worker file should be added with ``worker_app: synapse.app.homeserver``
+
+
 Changes in synapse v0.26.0 (2018-01-05)
 =======================================
 

synapse/app/synctl.py

@@ -184,6 +184,9 @@ def main():
         worker_configfiles.append(worker_configfile)
 
     if options.all_processes:
+        # To start the main synapse with -a you need to add a worker file
+        # with worker_app == "synapse.app.homeserver"
+        start_stop_synapse = False
         worker_configdir = options.all_processes
         if not os.path.isdir(worker_configdir):
             write(
@@ -200,11 +203,29 @@ def main():
         with open(worker_configfile) as stream:
             worker_config = yaml.load(stream)
         worker_app = worker_config["worker_app"]
-        worker_pidfile = worker_config["worker_pid_file"]
-        worker_daemonize = worker_config["worker_daemonize"]
-        assert worker_daemonize, "In config %r: expected '%s' to be True" % (
-            worker_configfile, "worker_daemonize")
-        worker_cache_factor = worker_config.get("synctl_cache_factor")
+        if worker_app == "synapse.app.homeserver":
+            # We need to special case all of this to pick up options that may
+            # be set in the main config file or in this worker config file.
+            worker_pidfile = (
+                worker_config.get("pid_file")
+                or pidfile
+            )
+            worker_cache_factor = worker_config.get("synctl_cache_factor") or cache_factor
+            daemonize = worker_config.get("daemonize") or config.get("daemonize")
+            assert daemonize, "Main process must have daemonize set to true"
+
+            # The master process doesn't support using worker_* config.
+            for key in worker_config:
+                if key == "worker_app":  # But we allow worker_app
+                    continue
+                assert not key.startswith("worker_"), \
+                    "Main process cannot use worker_* config"
+        else:
+            worker_pidfile = worker_config["worker_pid_file"]
+            worker_daemonize = worker_config["worker_daemonize"]
+            assert worker_daemonize, "In config %r: expected '%s' to be True" % (
+                worker_configfile, "worker_daemonize")
+            worker_cache_factor = worker_config.get("synctl_cache_factor")
         workers.append(Worker(
             worker_app, worker_configfile, worker_pidfile, worker_cache_factor,
         ))

synapse/config/workers.py

@@ -23,6 +23,11 @@ class WorkerConfig(Config):
 
     def read_config(self, config):
         self.worker_app = config.get("worker_app")
+
+        # Canonicalise worker_app so that master always has None
+        if self.worker_app == "synapse.app.homeserver":
+            self.worker_app = None
+
         self.worker_listeners = config.get("worker_listeners")
         self.worker_daemonize = config.get("worker_daemonize")
         self.worker_pid_file = config.get("worker_pid_file")

synapse/metrics/metric.py

@@ -50,7 +50,14 @@ class BaseMetric(object):
 
 class CounterMetric(BaseMetric):
     """The simplest kind of metric; one that stores a monotonically-increasing
-    integer that counts events."""
+    value that counts events or running totals.
+
+    Example use cases for Counters:
+    - Number of requests processed
+    - Number of items that were inserted into a queue
+    - Total amount of data that a system has processed
+    Counters can only go up (and be reset when the process restarts).
+    """
 
     def __init__(self, *args, **kwargs):
         super(CounterMetric, self).__init__(*args, **kwargs)
@@ -59,7 +66,7 @@ class CounterMetric(BaseMetric):
 
         # Scalar metrics are never empty
         if self.is_scalar():
-            self.counts[()] = 0
+            self.counts[()] = 0.
 
     def inc_by(self, incr, *values):
         if len(values) != self.dimension():
@@ -78,7 +85,7 @@ class CounterMetric(BaseMetric):
         self.inc_by(1, *values)
 
     def render_item(self, k):
-        return ["%s%s %d" % (self.name, self._render_key(k), self.counts[k])]
+        return ["%s%s %.12g" % (self.name, self._render_key(k), self.counts[k])]
 
     def render(self):
         return map_concat(self.render_item, sorted(self.counts.keys()))

synapse/rest/media/v1/thumbnail_resource.py

@@ -198,6 +198,11 @@ class ThumbnailResource(Resource):
     @defer.inlineCallbacks
     def _respond_remote_thumbnail(self, request, server_name, media_id, width,
                                   height, method, m_type):
+        # TODO: Don't download the whole remote file
+        # We should proxy the thumbnail from the remote server instead of
+        # downloading the remote file and generating our own thumbnails.
+        yield self.media_repo.get_remote_media(server_name, media_id)
+
         thumbnail_infos = yield self.store.get_remote_media_thumbnails(
             server_name, media_id,
         )