Update infra_libs to 1.1.15 / 0b44aba87c1c6538439df6d24a409870810747ab

client/third_party/infra_libs/ts_mon/common/http_metrics.py

 # Copyright 2015 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+from infra_libs.ts_mon.common import distribution
 from infra_libs.ts_mon.common import metrics
 
 
 # Extending HTTP status codes to client-side errors and timeouts.
 STATUS_OK = 200
 STATUS_ERROR = 901
 STATUS_TIMEOUT = 902
 STATUS_EXCEPTION = 909
 
+
+# 90% of durations are in the range 11-1873ms.  Growth factor 10^0.06 puts that
+# range into 37 buckets.  Max finite bucket value is 12 minutes.
+_duration_bucketer = distribution.GeometricBucketer(10**0.06)
+
+# 90% of sizes are in the range 0.17-217014 bytes.  Growth factor 10^0.1 puts
+# that range into 54 buckets.  Max finite bucket value is 6.3GB.
+_size_bucketer = distribution.GeometricBucketer(10**0.1)
+
+
 request_bytes = metrics.CumulativeDistributionMetric('http/request_bytes',
     'Bytes sent per http request (body only).', [
         metrics.StringField('name'),
         metrics.StringField('client'),
-    ])
+    ],
+    bucketer=_size_bucketer)
 response_bytes = metrics.CumulativeDistributionMetric('http/response_bytes',
     'Bytes received per http request (content only).', [
         metrics.StringField('name'),
         metrics.StringField('client'),
-    ])
+    ],
+    bucketer=_size_bucketer)
 durations = metrics.CumulativeDistributionMetric('http/durations',
     'Time elapsed between sending a request and getting a'
     ' response (including parsing) in milliseconds.', [
         metrics.StringField('name'),
         metrics.StringField('client'),
-    ])
+    ],
+    bucketer=_duration_bucketer)
 response_status = metrics.CounterMetric('http/response_status',
     'Number of responses received by HTTP status code.', [
         metrics.IntegerField('status'),
         metrics.StringField('name'),
         metrics.StringField('client'),
     ])
 
 
 server_request_bytes = metrics.CumulativeDistributionMetric(
     'http/server_request_bytes',
     'Bytes received per http request (body only).', [
         metrics.IntegerField('status'),
         metrics.StringField('name'),
         metrics.BooleanField('is_robot'),
-    ])
+    ],
+    bucketer=_size_bucketer)
 server_response_bytes = metrics.CumulativeDistributionMetric(
     'http/server_response_bytes',
     'Bytes sent per http request (content only).', [
         metrics.IntegerField('status'),
         metrics.StringField('name'),
         metrics.BooleanField('is_robot'),
-    ])
+    ],
+    bucketer=_size_bucketer)
 server_durations = metrics.CumulativeDistributionMetric('http/server_durations',
     'Time elapsed between receiving a request and sending a'
     ' response (including parsing) in milliseconds.', [
         metrics.IntegerField('status'),
         metrics.StringField('name'),
         metrics.BooleanField('is_robot'),
-    ])
+    ],
+    bucketer=_duration_bucketer)
 server_response_status = metrics.CounterMetric('http/server_response_status',
     'Number of responses sent by HTTP status code.', [
         metrics.IntegerField('status'),
         metrics.StringField('name'),
         metrics.BooleanField('is_robot'),
     ])
 
 
 def update_http_server_metrics(endpoint_name, response_status_code, elapsed_ms,
                                request_size=None, response_size=None,
                                user_agent=None):
   fields = {'status': response_status_code, 'name': endpoint_name,
             'is_robot': False}
   if user_agent is not None:
     # We must not log user agents, but we can store whether or not the
     # user agent string indicates that the requester was a Google bot.
     fields['is_robot'] = (
         'GoogleBot' in user_agent or
         'GoogleSecurityScanner' in user_agent or
         user_agent == 'B3M/prober')
 
   server_durations.add(elapsed_ms, fields=fields)
   server_response_status.increment(fields=fields)
   if request_size is not None:
     server_request_bytes.add(request_size, fields=fields)
   if response_size is not None:
     server_response_bytes.add(response_size, fields=fields)