118 lines
3.8 KiB
Go
118 lines
3.8 KiB
Go
package main
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import (
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"encoding/json"
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"fmt"
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"os/exec"
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"runtime"
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"strconv"
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"strings"
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"time"
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"github.com/docker/docker/api/types"
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"github.com/go-check/check"
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)
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func (s *DockerSuite) TestCliStatsNoStreamGetCpu(c *check.C) {
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out, _ := dockerCmd(c, "run", "-d", "busybox", "/bin/sh", "-c", "while true;do echo 'Hello'; usleep 100000; done")
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id := strings.TrimSpace(out)
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err := waitRun(id)
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c.Assert(err, check.IsNil)
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resp, body, err := sockRequestRaw("GET", fmt.Sprintf("/containers/%s/stats?stream=false", id), nil, "")
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c.Assert(err, check.IsNil)
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c.Assert(resp.ContentLength > 0, check.Equals, true, check.Commentf("should not use chunked encoding"))
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c.Assert(resp.Header.Get("Content-Type"), check.Equals, "application/json")
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var v *types.Stats
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err = json.NewDecoder(body).Decode(&v)
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c.Assert(err, check.IsNil)
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var cpuPercent = 0.0
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cpuDelta := float64(v.CpuStats.CpuUsage.TotalUsage - v.PreCpuStats.CpuUsage.TotalUsage)
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systemDelta := float64(v.CpuStats.SystemUsage - v.PreCpuStats.SystemUsage)
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cpuPercent = (cpuDelta / systemDelta) * float64(len(v.CpuStats.CpuUsage.PercpuUsage)) * 100.0
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if cpuPercent == 0 {
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c.Fatalf("docker stats with no-stream get cpu usage failed: was %v", cpuPercent)
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}
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}
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func (s *DockerSuite) TestStoppedContainerStatsGoroutines(c *check.C) {
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out, _ := dockerCmd(c, "run", "-d", "busybox", "/bin/sh", "-c", "echo 1")
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id := strings.TrimSpace(out)
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getGoRoutines := func() int {
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_, body, err := sockRequestRaw("GET", fmt.Sprintf("/info"), nil, "")
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c.Assert(err, check.IsNil)
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info := types.Info{}
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err = json.NewDecoder(body).Decode(&info)
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c.Assert(err, check.IsNil)
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body.Close()
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return info.NGoroutines
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}
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// When the HTTP connection is closed, the number of goroutines should not increase.
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routines := getGoRoutines()
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_, body, err := sockRequestRaw("GET", fmt.Sprintf("/containers/%s/stats", id), nil, "")
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c.Assert(err, check.IsNil)
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body.Close()
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t := time.After(30 * time.Second)
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for {
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select {
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case <-t:
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c.Assert(getGoRoutines() <= routines, check.Equals, true)
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return
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default:
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if n := getGoRoutines(); n <= routines {
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return
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}
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time.Sleep(200 * time.Millisecond)
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}
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}
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}
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func (s *DockerSuite) TestApiNetworkStats(c *check.C) {
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testRequires(c, SameHostDaemon)
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// Run container for 30 secs
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out, _ := dockerCmd(c, "run", "-d", "busybox", "top")
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id := strings.TrimSpace(out)
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err := waitRun(id)
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c.Assert(err, check.IsNil)
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// Retrieve the container address
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contIP := findContainerIP(c, id)
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numPings := 10
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// Get the container networking stats before and after pinging the container
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nwStatsPre := getNetworkStats(c, id)
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countParam := "-c"
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if runtime.GOOS == "windows" {
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countParam = "-n" // Ping count parameter is -n on Windows
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}
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pingout, err := exec.Command("ping", contIP, countParam, strconv.Itoa(numPings)).Output()
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pingouts := string(pingout[:])
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c.Assert(err, check.IsNil)
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nwStatsPost := getNetworkStats(c, id)
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// Verify the stats contain at least the expected number of packets (account for ARP)
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expRxPkts := 1 + nwStatsPre.RxPackets + uint64(numPings)
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expTxPkts := 1 + nwStatsPre.TxPackets + uint64(numPings)
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c.Assert(nwStatsPost.TxPackets >= expTxPkts, check.Equals, true,
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check.Commentf("Reported less TxPackets than expected. Expected >= %d. Found %d. %s", expTxPkts, nwStatsPost.TxPackets, pingouts))
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c.Assert(nwStatsPost.RxPackets >= expRxPkts, check.Equals, true,
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check.Commentf("Reported less Txbytes than expected. Expected >= %d. Found %d. %s", expRxPkts, nwStatsPost.RxPackets, pingouts))
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}
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func getNetworkStats(c *check.C, id string) types.Network {
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var st *types.Stats
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_, body, err := sockRequestRaw("GET", fmt.Sprintf("/containers/%s/stats?stream=false", id), nil, "")
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c.Assert(err, check.IsNil)
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err = json.NewDecoder(body).Decode(&st)
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c.Assert(err, check.IsNil)
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return st.Network
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}
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