github.com/quite/nomad@v0.8.6/command/agent/metrics_endpoint_test.go (about) 1 package agent 2 3 import ( 4 "net/http" 5 "net/http/httptest" 6 "testing" 7 8 metrics "github.com/armon/go-metrics" 9 "github.com/hashicorp/nomad/testutil" 10 "github.com/stretchr/testify/assert" 11 ) 12 13 func TestHTTP_MetricsWithIllegalMethod(t *testing.T) { 14 assert := assert.New(t) 15 16 t.Parallel() 17 httpTest(t, nil, func(s *TestAgent) { 18 req, err := http.NewRequest("DELETE", "/v1/metrics", nil) 19 assert.Nil(err) 20 respW := httptest.NewRecorder() 21 22 _, err = s.Server.MetricsRequest(respW, req) 23 assert.NotNil(err, "HTTP DELETE should not be accepted for this endpoint") 24 }) 25 } 26 27 func TestHTTP_Metrics(t *testing.T) { 28 assert := assert.New(t) 29 30 t.Parallel() 31 httpTest(t, nil, func(s *TestAgent) { 32 // make a separate HTTP request first, to ensure Nomad has written metrics 33 // and prevent a race condition 34 req, err := http.NewRequest("GET", "/v1/agent/self", nil) 35 assert.Nil(err) 36 respW := httptest.NewRecorder() 37 s.Server.AgentSelfRequest(respW, req) 38 39 // now make a metrics endpoint request, which should be already initialized 40 // and written to 41 req, err = http.NewRequest("GET", "/v1/metrics", nil) 42 assert.Nil(err) 43 respW = httptest.NewRecorder() 44 45 testutil.WaitForResult(func() (bool, error) { 46 resp, err := s.Server.MetricsRequest(respW, req) 47 if err != nil { 48 return false, err 49 } 50 respW.Flush() 51 52 res := resp.(metrics.MetricsSummary) 53 return len(res.Gauges) != 0, nil 54 }, func(err error) { 55 t.Fatalf("should have metrics: %v", err) 56 }) 57 }) 58 }