package main import ( "encoding/json" "fmt" "io" "os/exec" "regexp" "strconv" "strings" "time" "github.com/docker/docker/pkg/integration/checker" "github.com/docker/docker/pkg/timeutils" "github.com/go-check/check" ) // This used to work, it test a log of PageSize-1 (gh#4851) func (s *DockerSuite) TestLogsContainerSmallerThanPage(c *check.C) { testRequires(c, DaemonIsLinux) testLen := 32767 out, _ := dockerCmd(c, "run", "-d", "busybox", "sh", "-c", fmt.Sprintf("for i in $(seq 1 %d); do echo -n =; done; echo", testLen)) id := strings.TrimSpace(out) dockerCmd(c, "wait", id) out, _ = dockerCmd(c, "logs", id) c.Assert(out, checker.HasLen, testLen+1) } // Regression test: When going over the PageSize, it used to panic (gh#4851) func (s *DockerSuite) TestLogsContainerBiggerThanPage(c *check.C) { testRequires(c, DaemonIsLinux) testLen := 32768 out, _ := dockerCmd(c, "run", "-d", "busybox", "sh", "-c", fmt.Sprintf("for i in $(seq 1 %d); do echo -n =; done; echo", testLen)) id := strings.TrimSpace(out) dockerCmd(c, "wait", id) out, _ = dockerCmd(c, "logs", id) c.Assert(out, checker.HasLen, testLen+1) } // Regression test: When going much over the PageSize, it used to block (gh#4851) func (s *DockerSuite) TestLogsContainerMuchBiggerThanPage(c *check.C) { testRequires(c, DaemonIsLinux) testLen := 33000 out, _ := dockerCmd(c, "run", "-d", "busybox", "sh", "-c", fmt.Sprintf("for i in $(seq 1 %d); do echo -n =; done; echo", testLen)) id := strings.TrimSpace(out) dockerCmd(c, "wait", id) out, _ = dockerCmd(c, "logs", id) c.Assert(out, checker.HasLen, testLen+1) } func (s *DockerSuite) TestLogsTimestamps(c *check.C) { testRequires(c, DaemonIsLinux) testLen := 100 out, _ := dockerCmd(c, "run", "-d", "busybox", "sh", "-c", fmt.Sprintf("for i in $(seq 1 %d); do echo =; done;", testLen)) id := strings.TrimSpace(out) dockerCmd(c, "wait", id) out, _ = dockerCmd(c, "logs", "-t", id) lines := strings.Split(out, "\n") c.Assert(lines, checker.HasLen, testLen+1) ts := regexp.MustCompile(`^.* `) for _, l := range lines { if l != "" { _, err := time.Parse(timeutils.RFC3339NanoFixed+" ", ts.FindString(l)) c.Assert(err, checker.IsNil, check.Commentf("Failed to parse timestamp from %v", l)) // ensure we have padded 0's c.Assert(l[29], checker.Equals, uint8('Z')) } } } func (s *DockerSuite) TestLogsSeparateStderr(c *check.C) { testRequires(c, DaemonIsLinux) msg := "stderr_log" out, _ := dockerCmd(c, "run", "-d", "busybox", "sh", "-c", fmt.Sprintf("echo %s 1>&2", msg)) id := strings.TrimSpace(out) dockerCmd(c, "wait", id) stdout, stderr, _ := dockerCmdWithStdoutStderr(c, "logs", id) c.Assert(stdout, checker.Equals, "") stderr = strings.TrimSpace(stderr) c.Assert(stderr, checker.Equals, msg) } func (s *DockerSuite) TestLogsStderrInStdout(c *check.C) { testRequires(c, DaemonIsLinux) msg := "stderr_log" out, _ := dockerCmd(c, "run", "-d", "-t", "busybox", "sh", "-c", fmt.Sprintf("echo %s 1>&2", msg)) id := strings.TrimSpace(out) dockerCmd(c, "wait", id) stdout, stderr, _ := dockerCmdWithStdoutStderr(c, "logs", id) c.Assert(stderr, checker.Equals, "") stdout = strings.TrimSpace(stdout) c.Assert(stdout, checker.Equals, msg) } func (s *DockerSuite) TestLogsTail(c *check.C) { testRequires(c, DaemonIsLinux) testLen := 100 out, _ := dockerCmd(c, "run", "-d", "busybox", "sh", "-c", fmt.Sprintf("for i in $(seq 1 %d); do echo =; done;", testLen)) id := strings.TrimSpace(out) dockerCmd(c, "wait", id) out, _ = dockerCmd(c, "logs", "--tail", "5", id) lines := strings.Split(out, "\n") c.Assert(lines, checker.HasLen, 6) out, _ = dockerCmd(c, "logs", "--tail", "all", id) lines = strings.Split(out, "\n") c.Assert(lines, checker.HasLen, testLen+1) out, _, _ = dockerCmdWithStdoutStderr(c, "logs", "--tail", "random", id) lines = strings.Split(out, "\n") c.Assert(lines, checker.HasLen, testLen+1) } func (s *DockerSuite) TestLogsFollowStopped(c *check.C) { testRequires(c, DaemonIsLinux) out, _ := dockerCmd(c, "run", "-d", "busybox", "echo", "hello") id := strings.TrimSpace(out) dockerCmd(c, "wait", id) logsCmd := exec.Command(dockerBinary, "logs", "-f", id) c.Assert(logsCmd.Start(), checker.IsNil) errChan := make(chan error) go func() { errChan <- logsCmd.Wait() close(errChan) }() select { case err := <-errChan: c.Assert(err, checker.IsNil) case <-time.After(1 * time.Second): c.Fatal("Following logs is hanged") } } func (s *DockerSuite) TestLogsSince(c *check.C) { testRequires(c, DaemonIsLinux) name := "testlogssince" out, _ := dockerCmd(c, "run", "--name="+name, "busybox", "/bin/sh", "-c", "for i in $(seq 1 3); do sleep 2; echo `date +%s` log$i; done") log2Line := strings.Split(strings.Split(out, "\n")[1], " ") t, err := strconv.ParseInt(log2Line[0], 10, 64) // the timestamp log2 is written c.Assert(err, checker.IsNil) since := t + 1 // add 1s so log1 & log2 doesn't show up out, _ = dockerCmd(c, "logs", "-t", fmt.Sprintf("--since=%v", since), name) // Skip 2 seconds unexpected := []string{"log1", "log2"} for _, v := range unexpected { c.Assert(out, checker.Not(checker.Contains), v, check.Commentf("unexpected log message returned, since=%v", since)) } // Test with default value specified and parameter omitted expected := []string{"log1", "log2", "log3"} for _, cmd := range []*exec.Cmd{ exec.Command(dockerBinary, "logs", "-t", name), exec.Command(dockerBinary, "logs", "-t", "--since=0", name), } { out, _, err = runCommandWithOutput(cmd) c.Assert(err, checker.IsNil, check.Commentf("failed to log container: %s", out)) for _, v := range expected { c.Assert(out, checker.Contains, v) } } } func (s *DockerSuite) TestLogsSinceFutureFollow(c *check.C) { testRequires(c, DaemonIsLinux) out, _ := dockerCmd(c, "run", "-d", "busybox", "/bin/sh", "-c", `for i in $(seq 1 5); do date +%s; sleep 1; done`) id := strings.TrimSpace(out) now := daemonTime(c).Unix() since := now + 2 out, _ = dockerCmd(c, "logs", "-f", fmt.Sprintf("--since=%v", since), id) lines := strings.Split(strings.TrimSpace(out), "\n") c.Assert(lines, checker.Not(checker.HasLen), 0) for _, v := range lines { ts, err := strconv.ParseInt(v, 10, 64) c.Assert(err, checker.IsNil, check.Commentf("cannot parse timestamp output from log: '%v'\nout=%s", v, out)) c.Assert(ts >= since, checker.Equals, true, check.Commentf("earlier log found. since=%v logdate=%v", since, ts)) } } // Regression test for #8832 func (s *DockerSuite) TestLogsFollowSlowStdoutConsumer(c *check.C) { testRequires(c, DaemonIsLinux) out, _ := dockerCmd(c, "run", "-d", "busybox", "/bin/sh", "-c", `usleep 200000;yes X | head -c 200000`) id := strings.TrimSpace(out) stopSlowRead := make(chan bool) go func() { exec.Command(dockerBinary, "wait", id).Run() stopSlowRead <- true }() logCmd := exec.Command(dockerBinary, "logs", "-f", id) stdout, err := logCmd.StdoutPipe() c.Assert(err, checker.IsNil) c.Assert(logCmd.Start(), checker.IsNil) // First read slowly bytes1, err := consumeWithSpeed(stdout, 10, 50*time.Millisecond, stopSlowRead) c.Assert(err, checker.IsNil) // After the container has finished we can continue reading fast bytes2, err := consumeWithSpeed(stdout, 32*1024, 0, nil) c.Assert(err, checker.IsNil) actual := bytes1 + bytes2 expected := 200000 c.Assert(actual, checker.Equals, expected) } func (s *DockerSuite) TestLogsFollowGoroutinesWithStdout(c *check.C) { testRequires(c, DaemonIsLinux) out, _ := dockerCmd(c, "run", "-d", "busybox", "/bin/sh", "-c", "while true; do echo hello; sleep 2; done") id := strings.TrimSpace(out) c.Assert(waitRun(id), checker.IsNil) type info struct { NGoroutines int } getNGoroutines := func() int { var i info status, b, err := sockRequest("GET", "/info", nil) c.Assert(err, checker.IsNil) c.Assert(status, checker.Equals, 200) c.Assert(json.Unmarshal(b, &i), checker.IsNil) return i.NGoroutines } nroutines := getNGoroutines() cmd := exec.Command(dockerBinary, "logs", "-f", id) r, w := io.Pipe() cmd.Stdout = w c.Assert(cmd.Start(), checker.IsNil) // Make sure pipe is written to chErr := make(chan error) go func() { b := make([]byte, 1) _, err := r.Read(b) chErr <- err }() c.Assert(<-chErr, checker.IsNil) c.Assert(cmd.Process.Kill(), checker.IsNil) // NGoroutines is not updated right away, so we need to wait before failing t := time.After(30 * time.Second) for { select { case <-t: n := getNGoroutines() c.Assert(n <= nroutines, checker.Equals, true, check.Commentf("leaked goroutines: expected less than or equal to %d, got: %d", nroutines, n)) default: if n := getNGoroutines(); n <= nroutines { return } time.Sleep(200 * time.Millisecond) } } } func (s *DockerSuite) TestLogsFollowGoroutinesNoOutput(c *check.C) { testRequires(c, DaemonIsLinux) out, _ := dockerCmd(c, "run", "-d", "busybox", "/bin/sh", "-c", "while true; do sleep 2; done") id := strings.TrimSpace(out) c.Assert(waitRun(id), checker.IsNil) type info struct { NGoroutines int } getNGoroutines := func() int { var i info status, b, err := sockRequest("GET", "/info", nil) c.Assert(err, checker.IsNil) c.Assert(status, checker.Equals, 200) c.Assert(json.Unmarshal(b, &i), checker.IsNil) return i.NGoroutines } nroutines := getNGoroutines() cmd := exec.Command(dockerBinary, "logs", "-f", id) c.Assert(cmd.Start(), checker.IsNil) time.Sleep(200 * time.Millisecond) c.Assert(cmd.Process.Kill(), checker.IsNil) // NGoroutines is not updated right away, so we need to wait before failing t := time.After(30 * time.Second) for { select { case <-t: n := getNGoroutines() c.Assert(n <= nroutines, checker.Equals, true, check.Commentf("leaked goroutines: expected less than or equal to %d, got: %d", nroutines, n)) default: if n := getNGoroutines(); n <= nroutines { return } time.Sleep(200 * time.Millisecond) } } } func (s *DockerSuite) TestLogsCLIContainerNotFound(c *check.C) { name := "testlogsnocontainer" out, _, _ := dockerCmdWithError("logs", name) message := fmt.Sprintf(".*no such id: %s.*\n", name) c.Assert(out, checker.Matches, message) }