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moby--moby/integration-cli/docker_api_stats_test.go
Shijiang Wei 1cbf5a54da fix the goroutine leak in the stats API if the container is not running
Signed-off-by: Shijiang Wei <mountkin@gmail.com>
2015-06-23 19:38:15 +08:00

71 lines
2.1 KiB
Go

package main
import (
"encoding/json"
"fmt"
"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)
}
}
}