138 lines
4 KiB
Go
138 lines
4 KiB
Go
package agent
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import (
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"net/http"
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"net/http/httptest"
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"strings"
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"testing"
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"time"
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"github.com/armon/go-metrics"
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"github.com/hashicorp/nomad/nomad/mock"
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"github.com/hashicorp/nomad/nomad/structs"
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"github.com/hashicorp/nomad/testutil"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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)
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func TestHTTP_MetricsWithIllegalMethod(t *testing.T) {
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assert := assert.New(t)
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t.Parallel()
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httpTest(t, nil, func(s *TestAgent) {
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req, err := http.NewRequest("DELETE", "/v1/metrics", nil)
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assert.Nil(err)
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respW := httptest.NewRecorder()
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_, err = s.Server.MetricsRequest(respW, req)
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assert.NotNil(err, "HTTP DELETE should not be accepted for this endpoint")
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})
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}
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func TestHTTP_Metrics(t *testing.T) {
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assert := assert.New(t)
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t.Parallel()
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httpTest(t, nil, func(s *TestAgent) {
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// make a separate HTTP request first, to ensure Nomad has written metrics
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// and prevent a race condition
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req, err := http.NewRequest("GET", "/v1/agent/self", nil)
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assert.Nil(err)
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respW := httptest.NewRecorder()
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s.Server.AgentSelfRequest(respW, req)
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// now make a metrics endpoint request, which should be already initialized
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// and written to
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req, err = http.NewRequest("GET", "/v1/metrics", nil)
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assert.Nil(err)
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respW = httptest.NewRecorder()
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testutil.WaitForResult(func() (bool, error) {
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resp, err := s.Server.MetricsRequest(respW, req)
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if err != nil {
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return false, err
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}
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respW.Flush()
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res := resp.(metrics.MetricsSummary)
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return len(res.Gauges) != 0, nil
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}, func(err error) {
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t.Fatalf("should have metrics: %v", err)
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})
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})
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}
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// When emitting metrics, the client should use the local copy of the allocs with
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// updated task states (not the copy submitted by the server).
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//
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// **Cannot** be run in parallel as metrics are global.
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func TestHTTP_FreshClientAllocMetrics(t *testing.T) {
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require := require.New(t)
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numTasks := 10
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httpTest(t, func(c *Config) {
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c.Telemetry.PublishAllocationMetrics = true
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c.Telemetry.PublishNodeMetrics = true
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c.Telemetry.BackwardsCompatibleMetrics = false
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c.Telemetry.DisableTaggedMetrics = false
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}, func(s *TestAgent) {
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// Create the job, wait for it to finish
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job := mock.BatchJob()
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job.TaskGroups[0].Count = numTasks
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testutil.RegisterJob(t, s.RPC, job)
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testutil.WaitForResult(func() (bool, error) {
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time.Sleep(200 * time.Millisecond)
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args := &structs.JobSpecificRequest{}
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args.JobID = job.ID
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args.QueryOptions.Region = "global"
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var resp structs.SingleJobResponse
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err := s.RPC("Job.GetJob", args, &resp)
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return err == nil && resp.Job.Status == "dead", err
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}, func(err error) {
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require.Fail("timed-out waiting for job to complete")
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})
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nodeID := s.client.NodeID()
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// wait for metrics to converge
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var pending, running, terminal float32 = -1.0, -1.0, -1.0
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testutil.WaitForResultRetries(100, func() (bool, error) {
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time.Sleep(100 * time.Millisecond)
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req, err := http.NewRequest("GET", "/v1/metrics", nil)
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require.NoError(err)
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respW := httptest.NewRecorder()
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obj, err := s.Server.MetricsRequest(respW, req)
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if err != nil {
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return false, err
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}
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metrics := obj.(metrics.MetricsSummary)
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for _, g := range metrics.Gauges {
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// ignore client metrics belonging to other test nodes
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// from other tests that contaminate go-metrics reporting
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if g.DisplayLabels["node_id"] != nodeID {
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continue
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}
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if strings.HasSuffix(g.Name, "client.allocations.pending") {
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pending = g.Value
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}
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if strings.HasSuffix(g.Name, "client.allocations.running") {
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running = g.Value
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}
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if strings.HasSuffix(g.Name, "client.allocations.terminal") {
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terminal = g.Value
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}
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}
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// client alloc metrics should reflect that there is numTasks terminal allocs and no other allocs
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return pending == float32(0) && running == float32(0) &&
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terminal == float32(numTasks), nil
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}, func(err error) {
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require.Fail("timed out waiting for metrics to converge",
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"expected: (pending: 0, running: 0, terminal: %v), got: (pending: %v, running: %v, terminal: %v)", numTasks, pending, running, terminal)
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})
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})
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}
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