continue

BREAKING_CHANGES.md

@@ -1,10 +1,8 @@
 # Changelog
 
-## Release 5.3
+## Release 6.0
 
 - The stats will not anymore be published on StatsD, use Prometheus client instead.
-  stats is no more initialized by default, you need to call `c2cwsgiutils.stats.init_backends(settings)` and
-  `c2cwsgiutils.config.include(metrics.includeme)` to initialize it.
 
 ## Release 5.2
 

README.md

@@ -3,8 +3,7 @@
 This is a Python 3 library (>=3.5) providing common tools for Camptocamp WSGI
 applications:
 
-- Provide a small framework for gathering performance statistics about
-  a web application (statsd protocol)
+- Provide prometheus metrics
 - Allow to use a master/slave PostgresQL configuration
 - Logging handler for CEE/UDP logs
   - An optional view to change runtime the log levels
@@ -504,8 +503,6 @@ def on_starting(server):
 
 ### Database metrics
 
-Other functions exists to generate metrics. Look at the `c2cwsgiutils.stats` module.
-
 Look at the `c2cwsgiutils-stats-db` utility if you want to generate statistics (gauges) about the
 row counts.
 

acceptance_tests/app/c2cwsgiutils_app/services.py

@@ -1,5 +1,6 @@
 import logging
 
+import prometheus_client
 import requests
 from pyramid.httpexceptions import (
     HTTPBadRequest,
@@ -10,10 +11,14 @@
 )
 
 from c2cwsgiutils import sentry, services
-from c2cwsgiutils.stats import increment_counter, set_gauge, timer_context
 
 from c2cwsgiutils_app import models
 
+_PROMETHEUS_TEST_COUNTER = prometheus_client.Counter("test_counter", "Test counter")
+_PROMETHEUS_TEST_GAUGE = prometheus_client.Gauge("test_gauge", "Test gauge", ["value", "toto"])
+_PROMETHEUS_TEST_SUMMARY = prometheus_client.Summary("test_summary", "Test summary")
+
+
 ping_service = services.create("ping", "/ping")
 hello_service = services.create("hello", "/hello", cors_credentials=True)
 error_service = services.create("error", "/error")
@@ -39,10 +44,10 @@ def hello_get(request):
     """
     Will use the slave.
     """
-    with timer_context(["sql", "read_hello"]):
+    with _PROMETHEUS_TEST_SUMMARY.time():
         hello = request.dbsession.query(models.Hello).first()
-    increment_counter(["test", "counter"])
-    set_gauge(["test", "gauge/s"], 42, tags={"value": 24, "toto": "tutu"})
+    _PROMETHEUS_TEST_COUNTER.inc()
+    _PROMETHEUS_TEST_GAUGE.labels(value=24, toto="tutu").set(42)
     return {"value": hello.value}