| package main |
| |
| import ( |
| "encoding/json" |
| "fmt" |
| "strings" |
| |
| "github.com/docker/docker/api/types" |
| "github.com/go-check/check" |
| ) |
| |
| func (s *DockerSuite) TestCliStatsNoStreamGetCpu(c *check.C) { |
| out, _ := dockerCmd(c, "run", "-d", "busybox", "/bin/sh", "-c", "while true;do echo 'Hello'; usleep 100000; done") |
| |
| id := strings.TrimSpace(out) |
| err := waitRun(id) |
| c.Assert(err, check.IsNil) |
| |
| resp, body, err := sockRequestRaw("GET", fmt.Sprintf("/containers/%s/stats?stream=false", id), nil, "") |
| c.Assert(err, check.IsNil) |
| c.Assert(resp.ContentLength > 0, check.Equals, true, check.Commentf("should not use chunked encoding")) |
| c.Assert(resp.Header.Get("Content-Type"), check.Equals, "application/json") |
| |
| var v *types.Stats |
| err = json.NewDecoder(body).Decode(&v) |
| c.Assert(err, check.IsNil) |
| |
| var cpuPercent = 0.0 |
| cpuDelta := float64(v.CpuStats.CpuUsage.TotalUsage - v.PreCpuStats.CpuUsage.TotalUsage) |
| systemDelta := float64(v.CpuStats.SystemUsage - v.PreCpuStats.SystemUsage) |
| cpuPercent = (cpuDelta / systemDelta) * float64(len(v.CpuStats.CpuUsage.PercpuUsage)) * 100.0 |
| if cpuPercent == 0 { |
| c.Fatalf("docker stats with no-stream get cpu usage failed: was %v", cpuPercent) |
| } |
| } |