package main import ( "bufio" "bytes" "fmt" "net/http" "strings" "time" "github.com/go-check/check" ) func (s *DockerSuite) TestLogsApiWithStdout(c *check.C) { out, _ := dockerCmd(c, "run", "-d", "-t", "busybox", "/bin/sh", "-c", "while true; do echo hello; sleep 1; done") id := strings.TrimSpace(out) if err := waitRun(id); err != nil { c.Fatal(err) } type logOut struct { out string res *http.Response err error } chLog := make(chan logOut) go func() { res, body, err := sockRequestRaw("GET", fmt.Sprintf("/containers/%s/logs?follow=1&stdout=1×tamps=1", id), nil, "") if err != nil { chLog <- logOut{"", nil, err} return } defer body.Close() out, err := bufio.NewReader(body).ReadString('\n') if err != nil { chLog <- logOut{"", nil, err} return } chLog <- logOut{strings.TrimSpace(out), res, err} }() select { case l := <-chLog: c.Assert(l.err, check.IsNil) c.Assert(l.res.StatusCode, check.Equals, http.StatusOK) if !strings.HasSuffix(l.out, "hello") { c.Fatalf("expected log output to container 'hello', but it does not") } case <-time.After(2 * time.Second): c.Fatal("timeout waiting for logs to exit") } } func (s *DockerSuite) TestLogsApiNoStdoutNorStderr(c *check.C) { name := "logs_test" dockerCmd(c, "run", "-d", "-t", "--name", name, "busybox", "/bin/sh") status, body, err := sockRequest("GET", fmt.Sprintf("/containers/%s/logs", name), nil) c.Assert(status, check.Equals, http.StatusBadRequest) c.Assert(err, check.IsNil) expected := "Bad parameters: you must choose at least one stream" if !bytes.Contains(body, []byte(expected)) { c.Fatalf("Expected %s, got %s", expected, string(body[:])) } } // Regression test for #12704 func (s *DockerSuite) TestLogsApiFollowEmptyOutput(c *check.C) { name := "logs_test" t0 := time.Now() dockerCmd(c, "run", "-d", "-t", "--name", name, "busybox", "sleep", "10") _, body, err := sockRequestRaw("GET", fmt.Sprintf("/containers/%s/logs?follow=1&stdout=1&stderr=1&tail=all", name), bytes.NewBuffer(nil), "") t1 := time.Now() c.Assert(err, check.IsNil) body.Close() elapsed := t1.Sub(t0).Seconds() if elapsed > 5.0 { c.Fatalf("HTTP response was not immediate (elapsed %.1fs)", elapsed) } }