package main import ( "encoding/json" "fmt" "os/exec" "runtime" "strconv" "strings" "time" "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) } } func (s *DockerSuite) TestStoppedContainerStatsGoroutines(c *check.C) { out, _ := dockerCmd(c, "run", "-d", "busybox", "/bin/sh", "-c", "echo 1") id := strings.TrimSpace(out) getGoRoutines := func() int { _, body, err := sockRequestRaw("GET", fmt.Sprintf("/info"), nil, "") c.Assert(err, check.IsNil) info := types.Info{} err = json.NewDecoder(body).Decode(&info) c.Assert(err, check.IsNil) body.Close() return info.NGoroutines } // When the HTTP connection is closed, the number of goroutines should not increase. routines := getGoRoutines() _, body, err := sockRequestRaw("GET", fmt.Sprintf("/containers/%s/stats", id), nil, "") c.Assert(err, check.IsNil) body.Close() t := time.After(30 * time.Second) for { select { case <-t: c.Assert(getGoRoutines() <= routines, check.Equals, true) return default: if n := getGoRoutines(); n <= routines { return } time.Sleep(200 * time.Millisecond) } } } func (s *DockerSuite) TestApiNetworkStats(c *check.C) { testRequires(c, SameHostDaemon) // Run container for 30 secs out, _ := dockerCmd(c, "run", "-d", "busybox", "top") id := strings.TrimSpace(out) err := waitRun(id) c.Assert(err, check.IsNil) // Retrieve the container address contIP := findContainerIP(c, id) numPings := 10 // Get the container networking stats before and after pinging the container nwStatsPre := getNetworkStats(c, id) countParam := "-c" if runtime.GOOS == "windows" { countParam = "-n" // Ping count parameter is -n on Windows } pingout, err := exec.Command("ping", contIP, countParam, strconv.Itoa(numPings)).Output() pingouts := string(pingout[:]) c.Assert(err, check.IsNil) nwStatsPost := getNetworkStats(c, id) // Verify the stats contain at least the expected number of packets (account for ARP) expRxPkts := 1 + nwStatsPre.RxPackets + uint64(numPings) expTxPkts := 1 + nwStatsPre.TxPackets + uint64(numPings) c.Assert(nwStatsPost.TxPackets >= expTxPkts, check.Equals, true, check.Commentf("Reported less TxPackets than expected. Expected >= %d. Found %d. %s", expTxPkts, nwStatsPost.TxPackets, pingouts)) c.Assert(nwStatsPost.RxPackets >= expRxPkts, check.Equals, true, check.Commentf("Reported less Txbytes than expected. Expected >= %d. Found %d. %s", expRxPkts, nwStatsPost.RxPackets, pingouts)) } func getNetworkStats(c *check.C, id string) types.Network { var st *types.Stats _, body, err := sockRequestRaw("GET", fmt.Sprintf("/containers/%s/stats?stream=false", id), nil, "") c.Assert(err, check.IsNil) err = json.NewDecoder(body).Decode(&st) c.Assert(err, check.IsNil) return st.Network }