+func (s *HandlerSuite) TestMetrics(c *check.C) {
+ reg := prometheus.NewRegistry()
+ c.Assert(s.handler.setup(context.Background(), s.cluster, "", reg, testServiceURL), check.IsNil)
+ instrumented := httpserver.Instrument(reg, ctxlog.TestLogger(c), s.handler.Handler)
+ s.handler.Handler = instrumented.ServeAPI(s.cluster.ManagementToken, instrumented)
+
+ s.call("PUT", "/"+TestHash, "", TestBlock)
+ s.call("PUT", "/"+TestHash2, "", TestBlock2)
+ resp := s.call("GET", "/metrics.json", "", nil)
+ c.Check(resp.Code, check.Equals, http.StatusUnauthorized)
+ resp = s.call("GET", "/metrics.json", "foobar", nil)
+ c.Check(resp.Code, check.Equals, http.StatusForbidden)
+ resp = s.call("GET", "/metrics.json", arvadostest.ManagementToken, nil)
+ c.Check(resp.Code, check.Equals, http.StatusOK)
+ var j []struct {
+ Name string
+ Help string
+ Type string
+ Metric []struct {
+ Label []struct {
+ Name string
+ Value string
+ }
+ Summary struct {
+ SampleCount string
+ SampleSum float64
+ }
+ }
+ }
+ json.NewDecoder(resp.Body).Decode(&j)
+ found := make(map[string]bool)
+ names := map[string]bool{}
+ for _, g := range j {
+ names[g.Name] = true
+ for _, m := range g.Metric {
+ if len(m.Label) == 2 && m.Label[0].Name == "code" && m.Label[0].Value == "200" && m.Label[1].Name == "method" && m.Label[1].Value == "put" {
+ c.Check(m.Summary.SampleCount, check.Equals, "2")
+ found[g.Name] = true
+ }
+ }
+ }
+
+ metricsNames := []string{
+ "arvados_keepstore_bufferpool_inuse_buffers",
+ "arvados_keepstore_bufferpool_max_buffers",
+ "arvados_keepstore_bufferpool_allocated_bytes",
+ "arvados_keepstore_pull_queue_inprogress_entries",
+ "arvados_keepstore_pull_queue_pending_entries",
+ "arvados_keepstore_trash_queue_inprogress_entries",
+ "arvados_keepstore_trash_queue_pending_entries",
+ "request_duration_seconds",
+ }
+ for _, m := range metricsNames {
+ _, ok := names[m]
+ c.Check(ok, check.Equals, true, check.Commentf("checking metric %q", m))
+ }
+}
+
+func (s *HandlerSuite) call(method, path, tok string, body []byte) *httptest.ResponseRecorder {