Integrate statsd metrics into ansible playbook execution.

* Add dependencies for pystatsd and django-statsd-mozilla
* Default turned off except for development environment
* Modify docker-compose to install statsd/graphite host

awx/lib/metrics.py

@@ -0,0 +1,45 @@
+# -*- coding: utf-8 -*-
+from __future__ import absolute_import
+
+import logging
+
+logger = logging.getLogger(__name__)
+
+from functools import wraps
+
+from django_statsd.clients import statsd
+
+
+def task_timer(fn):
+    @wraps(fn)
+    def __wrapped__(self, *args, **kwargs):
+        statsd.incr('tasks.{}.{}.count'.format(
+                self.name.rsplit('.', 1)[-1],
+                fn.__name__
+        ))
+        with statsd.timer('tasks.{}.{}.timer'.format(
+                self.name.rsplit('.', 1)[-1],
+                fn.__name__
+        )):
+            return fn(self, *args, **kwargs)
+    return __wrapped__
+
+class BaseTimer(object):
+    def __init__(self, name, prefix=None):
+        self.name = name.rsplit('.', 1)[-1]
+        if prefix:
+            self.name = '{}.{}'.format(prefix, self.name)
+
+    def __call__(self, fn):
+        @wraps(fn)
+        def __wrapped__(obj, *args, **kwargs):
+            statsd.incr('{}.{}.count'.format(
+                    self.name,
+                    fn.__name__
+            ))
+            with statsd.timer('{}.{}.timer'.format(
+                    self.name,
+                    fn.__name__
+            )):
+                return fn(obj, *args, **kwargs)
+        return __wrapped__