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moby--moby/integration-cli/docker_api_exec_test.go

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// +build !test_no_exec
package main
import (
"bytes"
"encoding/json"
"fmt"
"io/ioutil"
"net/http"
"os"
"strings"
"time"
"github.com/docker/docker/api/types"
"github.com/docker/docker/client"
"github.com/docker/docker/integration-cli/checker"
"github.com/docker/docker/integration-cli/request"
"github.com/go-check/check"
"golang.org/x/net/context"
)
// Regression test for #9414
func (s *DockerSuite) TestExecAPICreateNoCmd(c *check.C) {
name := "exec_test"
dockerCmd(c, "run", "-d", "-t", "--name", name, "busybox", "/bin/sh")
res, body, err := request.Post(fmt.Sprintf("/containers/%s/exec", name), request.JSONBody(map[string]interface{}{"Cmd": nil}))
c.Assert(err, checker.IsNil)
c.Assert(res.StatusCode, checker.Equals, http.StatusBadRequest)
b, err := request.ReadBody(body)
c.Assert(err, checker.IsNil)
comment := check.Commentf("Expected message when creating exec command with no Cmd specified")
c.Assert(getErrorMessage(c, b), checker.Contains, "No exec command specified", comment)
}
func (s *DockerSuite) TestExecAPICreateNoValidContentType(c *check.C) {
name := "exec_test"
dockerCmd(c, "run", "-d", "-t", "--name", name, "busybox", "/bin/sh")
jsonData := bytes.NewBuffer(nil)
if err := json.NewEncoder(jsonData).Encode(map[string]interface{}{"Cmd": nil}); err != nil {
c.Fatalf("Can not encode data to json %s", err)
}
res, body, err := request.Post(fmt.Sprintf("/containers/%s/exec", name), request.RawContent(ioutil.NopCloser(jsonData)), request.ContentType("test/plain"))
c.Assert(err, checker.IsNil)
c.Assert(res.StatusCode, checker.Equals, http.StatusBadRequest)
b, err := request.ReadBody(body)
c.Assert(err, checker.IsNil)
comment := check.Commentf("Expected message when creating exec command with invalid Content-Type specified")
c.Assert(getErrorMessage(c, b), checker.Contains, "Content-Type specified", comment)
}
func (s *DockerSuite) TestExecAPICreateContainerPaused(c *check.C) {
// Not relevant on Windows as Windows containers cannot be paused
testRequires(c, DaemonIsLinux)
name := "exec_create_test"
dockerCmd(c, "run", "-d", "-t", "--name", name, "busybox", "/bin/sh")
dockerCmd(c, "pause", name)
cli, err := client.NewEnvClient()
c.Assert(err, checker.IsNil)
defer cli.Close()
config := types.ExecConfig{
Cmd: []string{"true"},
}
_, err = cli.ContainerExecCreate(context.Background(), name, config)
comment := check.Commentf("Expected message when creating exec command with Container %s is paused", name)
c.Assert(err.Error(), checker.Contains, "Container "+name+" is paused, unpause the container before exec", comment)
}
func (s *DockerSuite) TestExecAPIStart(c *check.C) {
testRequires(c, DaemonIsLinux) // Uses pause/unpause but bits may be salvageable to Windows to Windows CI
dockerCmd(c, "run", "-d", "--name", "test", "busybox", "top")
id := createExec(c, "test")
startExec(c, id, http.StatusOK)
var execJSON struct{ PID int }
inspectExec(c, id, &execJSON)
c.Assert(execJSON.PID, checker.GreaterThan, 1)
id = createExec(c, "test")
dockerCmd(c, "stop", "test")
startExec(c, id, http.StatusNotFound)
dockerCmd(c, "start", "test")
startExec(c, id, http.StatusNotFound)
// make sure exec is created before pausing
id = createExec(c, "test")
dockerCmd(c, "pause", "test")
startExec(c, id, http.StatusConflict)
dockerCmd(c, "unpause", "test")
startExec(c, id, http.StatusOK)
}
func (s *DockerSuite) TestExecAPIStartEnsureHeaders(c *check.C) {
testRequires(c, DaemonIsLinux)
dockerCmd(c, "run", "-d", "--name", "test", "busybox", "top")
id := createExec(c, "test")
resp, _, err := request.Post(fmt.Sprintf("/exec/%s/start", id), request.RawString(`{"Detach": true}`), request.JSON)
c.Assert(err, checker.IsNil)
c.Assert(resp.Header.Get("Server"), checker.Not(checker.Equals), "")
}
func (s *DockerSuite) TestExecAPIStartBackwardsCompatible(c *check.C) {
testRequires(c, DaemonIsLinux) // Windows only supports 1.25 or later
runSleepingContainer(c, "-d", "--name", "test")
id := createExec(c, "test")
resp, body, err := request.Post(fmt.Sprintf("/v1.20/exec/%s/start", id), request.RawString(`{"Detach": true}`), request.ContentType("text/plain"))
c.Assert(err, checker.IsNil)
b, err := request.ReadBody(body)
comment := check.Commentf("response body: %s", b)
c.Assert(err, checker.IsNil, comment)
c.Assert(resp.StatusCode, checker.Equals, http.StatusOK, comment)
}
// #19362
func (s *DockerSuite) TestExecAPIStartMultipleTimesError(c *check.C) {
runSleepingContainer(c, "-d", "--name", "test")
execID := createExec(c, "test")
startExec(c, execID, http.StatusOK)
waitForExec(c, execID)
startExec(c, execID, http.StatusConflict)
}
// #20638
func (s *DockerSuite) TestExecAPIStartWithDetach(c *check.C) {
name := "foo"
runSleepingContainer(c, "-d", "-t", "--name", name)
config := types.ExecConfig{
Cmd: []string{"true"},
AttachStderr: true,
}
cli, err := client.NewEnvClient()
c.Assert(err, checker.IsNil)
defer cli.Close()
createResp, err := cli.ContainerExecCreate(context.Background(), name, config)
c.Assert(err, checker.IsNil)
_, body, err := request.Post(fmt.Sprintf("/exec/%s/start", createResp.ID), request.RawString(`{"Detach": true}`), request.JSON)
c.Assert(err, checker.IsNil)
b, err := request.ReadBody(body)
comment := check.Commentf("response body: %s", b)
c.Assert(err, checker.IsNil, comment)
resp, _, err := request.Get("/_ping")
c.Assert(err, checker.IsNil)
if resp.StatusCode != http.StatusOK {
c.Fatal("daemon is down, it should alive")
}
}
// #30311
func (s *DockerSuite) TestExecAPIStartValidCommand(c *check.C) {
name := "exec_test"
dockerCmd(c, "run", "-d", "-t", "--name", name, "busybox", "/bin/sh")
id := createExecCmd(c, name, "true")
startExec(c, id, http.StatusOK)
waitForExec(c, id)
var inspectJSON struct{ ExecIDs []string }
inspectContainer(c, name, &inspectJSON)
c.Assert(inspectJSON.ExecIDs, checker.IsNil)
}
// #30311
func (s *DockerSuite) TestExecAPIStartInvalidCommand(c *check.C) {
name := "exec_test"
dockerCmd(c, "run", "-d", "-t", "--name", name, "busybox", "/bin/sh")
id := createExecCmd(c, name, "invalid")
startExec(c, id, http.StatusBadRequest)
waitForExec(c, id)
var inspectJSON struct{ ExecIDs []string }
inspectContainer(c, name, &inspectJSON)
c.Assert(inspectJSON.ExecIDs, checker.IsNil)
}
func (s *DockerSuite) TestExecStateCleanup(c *check.C) {
testRequires(c, DaemonIsLinux, SameHostDaemon)
// This test checks accidental regressions. Not part of stable API.
name := "exec_cleanup"
cid, _ := dockerCmd(c, "run", "-d", "-t", "--name", name, "busybox", "/bin/sh")
cid = strings.TrimSpace(cid)
stateDir := "/var/run/docker/containerd/" + cid
checkReadDir := func(c *check.C) (interface{}, check.CommentInterface) {
fi, err := ioutil.ReadDir(stateDir)
c.Assert(err, checker.IsNil)
return len(fi), nil
}
fi, err := ioutil.ReadDir(stateDir)
c.Assert(err, checker.IsNil)
c.Assert(len(fi), checker.GreaterThan, 1)
id := createExecCmd(c, name, "ls")
startExec(c, id, http.StatusOK)
waitForExec(c, id)
waitAndAssert(c, 5*time.Second, checkReadDir, checker.Equals, len(fi))
id = createExecCmd(c, name, "invalid")
startExec(c, id, http.StatusBadRequest)
waitForExec(c, id)
waitAndAssert(c, 5*time.Second, checkReadDir, checker.Equals, len(fi))
dockerCmd(c, "stop", name)
_, err = os.Stat(stateDir)
c.Assert(err, checker.NotNil)
c.Assert(os.IsNotExist(err), checker.True)
}
func createExec(c *check.C, name string) string {
return createExecCmd(c, name, "true")
}
func createExecCmd(c *check.C, name string, cmd string) string {
_, reader, err := request.Post(fmt.Sprintf("/containers/%s/exec", name), request.JSONBody(map[string]interface{}{"Cmd": []string{cmd}}))
c.Assert(err, checker.IsNil)
b, err := ioutil.ReadAll(reader)
c.Assert(err, checker.IsNil)
defer reader.Close()
createResp := struct {
ID string `json:"Id"`
}{}
c.Assert(json.Unmarshal(b, &createResp), checker.IsNil, check.Commentf(string(b)))
return createResp.ID
}
func startExec(c *check.C, id string, code int) {
resp, body, err := request.Post(fmt.Sprintf("/exec/%s/start", id), request.RawString(`{"Detach": true}`), request.JSON)
c.Assert(err, checker.IsNil)
b, err := request.ReadBody(body)
comment := check.Commentf("response body: %s", b)
c.Assert(err, checker.IsNil, comment)
c.Assert(resp.StatusCode, checker.Equals, code, comment)
}
func inspectExec(c *check.C, id string, out interface{}) {
resp, body, err := request.Get(fmt.Sprintf("/exec/%s/json", id))
c.Assert(err, checker.IsNil)
defer body.Close()
c.Assert(resp.StatusCode, checker.Equals, http.StatusOK)
err = json.NewDecoder(body).Decode(out)
c.Assert(err, checker.IsNil)
}
func waitForExec(c *check.C, id string) {
timeout := time.After(60 * time.Second)
var execJSON struct{ Running bool }
for {
select {
case <-timeout:
c.Fatal("timeout waiting for exec to start")
default:
}
inspectExec(c, id, &execJSON)
if !execJSON.Running {
break
}
}
}
func inspectContainer(c *check.C, id string, out interface{}) {
resp, body, err := request.Get(fmt.Sprintf("/containers/%s/json", id))
c.Assert(err, checker.IsNil)
defer body.Close()
c.Assert(resp.StatusCode, checker.Equals, http.StatusOK)
err = json.NewDecoder(body).Decode(out)
c.Assert(err, checker.IsNil)
}