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moby--moby/integration-cli/docker_api_exec_resize_test.go

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package main
import (
"bytes"
"encoding/json"
"fmt"
"io"
"net/http"
"strings"
"sync"
"github.com/docker/docker/api/types/versions"
"github.com/docker/docker/integration-cli/checker"
"github.com/docker/docker/internal/test/request"
"github.com/go-check/check"
)
func (s *DockerSuite) TestExecResizeAPIHeightWidthNoInt(c *check.C) {
testRequires(c, DaemonIsLinux)
out, _ := dockerCmd(c, "run", "-d", "busybox", "top")
cleanedContainerID := strings.TrimSpace(out)
endpoint := "/exec/" + cleanedContainerID + "/resize?h=foo&w=bar"
res, _, err := request.Post(endpoint)
c.Assert(err, checker.IsNil)
if versions.LessThan(testEnv.DaemonAPIVersion(), "1.32") {
c.Assert(res.StatusCode, checker.Equals, http.StatusInternalServerError)
} else {
c.Assert(res.StatusCode, checker.Equals, http.StatusBadRequest)
}
}
// Part of #14845
func (s *DockerSuite) TestExecResizeImmediatelyAfterExecStart(c *check.C) {
name := "exec_resize_test"
dockerCmd(c, "run", "-d", "-i", "-t", "--name", name, "--restart", "always", "busybox", "/bin/sh")
testExecResize := func() error {
data := map[string]interface{}{
"AttachStdin": true,
"Cmd": []string{"/bin/sh"},
}
uri := fmt.Sprintf("/containers/%s/exec", name)
res, body, err := request.Post(uri, request.JSONBody(data))
if err != nil {
return err
}
if res.StatusCode != http.StatusCreated {
return fmt.Errorf("POST %s is expected to return %d, got %d", uri, http.StatusCreated, res.StatusCode)
}
buf, err := request.ReadBody(body)
c.Assert(err, checker.IsNil)
out := map[string]string{}
err = json.Unmarshal(buf, &out)
if err != nil {
return fmt.Errorf("ExecCreate returned invalid json. Error: %q", err.Error())
}
execID := out["Id"]
if len(execID) < 1 {
return fmt.Errorf("ExecCreate got invalid execID")
}
payload := bytes.NewBufferString(`{"Tty":true}`)
conn, _, err := sockRequestHijack("POST", fmt.Sprintf("/exec/%s/start", execID), payload, "application/json", daemonHost())
if err != nil {
return fmt.Errorf("Failed to start the exec: %q", err.Error())
}
defer conn.Close()
_, rc, err := request.Post(fmt.Sprintf("/exec/%s/resize?h=24&w=80", execID), request.ContentType("text/plain"))
if err != nil {
// It's probably a panic of the daemon if io.ErrUnexpectedEOF is returned.
if err == io.ErrUnexpectedEOF {
return fmt.Errorf("The daemon might have crashed.")
}
// Other error happened, should be reported.
return fmt.Errorf("Fail to exec resize immediately after start. Error: %q", err.Error())
}
rc.Close()
return nil
}
// The panic happens when daemon.ContainerExecStart is called but the
// container.Exec is not called.
// Because the panic is not 100% reproducible, we send the requests concurrently
// to increase the probability that the problem is triggered.
var (
n = 10
ch = make(chan error, n)
wg sync.WaitGroup
)
for i := 0; i < n; i++ {
wg.Add(1)
go func() {
defer wg.Done()
if err := testExecResize(); err != nil {
ch <- err
}
}()
}
wg.Wait()
select {
case err := <-ch:
c.Fatal(err.Error())
default:
}
}