109 lines
2.5 KiB
Go
109 lines
2.5 KiB
Go
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package container
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import (
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"bytes"
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"context"
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"fmt"
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"strconv"
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"strings"
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"testing"
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"time"
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"github.com/docker/docker/api/types"
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"github.com/docker/docker/api/types/container"
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"github.com/docker/docker/integration/util/request"
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"github.com/docker/docker/pkg/stdcopy"
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)
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func TestUpdateCPUQUota(t *testing.T) {
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t.Parallel()
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client := request.NewAPIClient(t)
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ctx := context.Background()
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c, err := client.ContainerCreate(ctx, &container.Config{
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Image: "busybox",
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Cmd: []string{"top"},
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}, nil, nil, "")
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if err != nil {
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t.Fatal(err)
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}
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defer func() {
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if err := client.ContainerRemove(ctx, c.ID, types.ContainerRemoveOptions{Force: true}); err != nil {
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panic(fmt.Sprintf("failed to clean up after test: %v", err))
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}
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}()
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if err := client.ContainerStart(ctx, c.ID, types.ContainerStartOptions{}); err != nil {
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t.Fatal(err)
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}
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for _, test := range []struct {
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desc string
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update int64
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}{
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{desc: "some random value", update: 15000},
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{desc: "a higher value", update: 20000},
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{desc: "a lower value", update: 10000},
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{desc: "unset value", update: -1},
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} {
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if _, err := client.ContainerUpdate(ctx, c.ID, container.UpdateConfig{
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Resources: container.Resources{
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CPUQuota: test.update,
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},
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}); err != nil {
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t.Fatal(err)
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}
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inspect, err := client.ContainerInspect(ctx, c.ID)
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if err != nil {
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t.Fatal(err)
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}
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if inspect.HostConfig.CPUQuota != test.update {
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t.Fatalf("quota not updated in the API, expected %d, got: %d", test.update, inspect.HostConfig.CPUQuota)
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}
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execCreate, err := client.ContainerExecCreate(ctx, c.ID, types.ExecConfig{
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Cmd: []string{"/bin/cat", "/sys/fs/cgroup/cpu/cpu.cfs_quota_us"},
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AttachStdout: true,
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AttachStderr: true,
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})
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if err != nil {
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t.Fatal(err)
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}
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attach, err := client.ContainerExecAttach(ctx, execCreate.ID, types.ExecStartCheck{})
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if err != nil {
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t.Fatal(err)
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}
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if err := client.ContainerExecStart(ctx, execCreate.ID, types.ExecStartCheck{}); err != nil {
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t.Fatal(err)
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}
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buf := bytes.NewBuffer(nil)
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ready := make(chan error)
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go func() {
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_, err := stdcopy.StdCopy(buf, buf, attach.Reader)
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ready <- err
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}()
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select {
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case <-time.After(60 * time.Second):
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t.Fatal("timeout waiting for exec to complete")
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case err := <-ready:
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if err != nil {
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t.Fatal(err)
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}
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}
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actual := strings.TrimSpace(buf.String())
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if actual != strconv.Itoa(int(test.update)) {
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t.Fatalf("expected cgroup value %d, got: %s", test.update, actual)
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}
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}
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}
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