package main import ( "fmt" "io" "os/exec" "regexp" "strings" "time" "github.com/docker/docker/integration-cli/checker" "github.com/docker/docker/pkg/jsonlog" "github.com/docker/docker/pkg/testutil" icmd "github.com/docker/docker/pkg/testutil/cmd" "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) { testLogsContainerPagination(c, 32767) } // Regression test: When going over the PageSize, it used to panic (gh#4851) func (s *DockerSuite) TestLogsContainerBiggerThanPage(c *check.C) { testLogsContainerPagination(c, 32768) } // Regression test: When going much over the PageSize, it used to block (gh#4851) func (s *DockerSuite) TestLogsContainerMuchBiggerThanPage(c *check.C) { testLogsContainerPagination(c, 33000) } func testLogsContainerPagination(c *check.C, testLen int) { out, _ := dockerCmd(c, "run", "-d", "busybox", "sh", "-c", fmt.Sprintf("for i in $(seq 1 %d); do echo -n = >> a.a; done; echo >> a.a; cat a.a", 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) { testLen := 100 out, _ := dockerCmd(c, "run", "-d", "busybox", "sh", "-c", fmt.Sprintf("for i in $(seq 1 %d); do echo = >> a.a; done; cat a.a", 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(jsonlog.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) { 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) { // TODO Windows: Needs investigation why this fails. Obtained string includes // a bunch of ANSI escape sequences before the "stderr_log" message. 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) { 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", "0", id) lines := strings.Split(out, "\n") c.Assert(lines, checker.HasLen, 1) out, _ = dockerCmd(c, "logs", "--tail", "5", id) lines = strings.Split(out, "\n") c.Assert(lines, checker.HasLen, 6) out, _ = dockerCmd(c, "logs", "--tail", "99", id) lines = strings.Split(out, "\n") c.Assert(lines, checker.HasLen, 100) out, _ = dockerCmd(c, "logs", "--tail", "all", id) lines = strings.Split(out, "\n") c.Assert(lines, checker.HasLen, testLen+1) out, _ = dockerCmd(c, "logs", "--tail", "-1", 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) { dockerCmd(c, "run", "--name=test", "busybox", "echo", "hello") id := getIDByName(c, "test") 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(30 * time.Second): c.Fatal("Following logs is hanged") } } func (s *DockerSuite) TestLogsSince(c *check.C) { name := "testlogssince" dockerCmd(c, "run", "--name="+name, "busybox", "/bin/sh", "-c", "for i in $(seq 1 3); do sleep 2; echo log$i; done") out, _ := dockerCmd(c, "logs", "-t", name) log2Line := strings.Split(strings.Split(out, "\n")[1], " ") t, err := time.Parse(time.RFC3339Nano, log2Line[0]) // the timestamp log2 is written c.Assert(err, checker.IsNil) since := t.Unix() + 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 to make sure a bad since format is caught by the client out, _, _ = dockerCmdWithError("logs", "-t", "--since=2006-01-02T15:04:0Z", name) c.Assert(out, checker.Contains, "cannot parse \"0Z\" as \"05\"", check.Commentf("bad since format passed to server")) // Test with default value specified and parameter omitted expected := []string{"log1", "log2", "log3"} for _, cmd := range [][]string{ {"logs", "-t", name}, {"logs", "-t", "--since=0", name}, } { result := icmd.RunCommand(dockerBinary, cmd...) result.Assert(c, icmd.Success) for _, v := range expected { c.Assert(result.Combined(), checker.Contains, v) } } } func (s *DockerSuite) TestLogsSinceFutureFollow(c *check.C) { // TODO Windows TP5 - Figure out why this test is so flakey. Disabled for now. testRequires(c, DaemonIsLinux) name := "testlogssincefuturefollow" out, _ := dockerCmd(c, "run", "-d", "--name", name, "busybox", "/bin/sh", "-c", `for i in $(seq 1 5); do echo log$i; sleep 1; done`) // Extract one timestamp from the log file to give us a starting point for // our `--since` argument. Because the log producer runs in the background, // we need to check repeatedly for some output to be produced. var timestamp string for i := 0; i != 100 && timestamp == ""; i++ { if out, _ = dockerCmd(c, "logs", "-t", name); out == "" { time.Sleep(time.Millisecond * 100) // Retry } else { timestamp = strings.Split(strings.Split(out, "\n")[0], " ")[0] } } c.Assert(timestamp, checker.Not(checker.Equals), "") t, err := time.Parse(time.RFC3339Nano, timestamp) c.Assert(err, check.IsNil) since := t.Unix() + 2 out, _ = dockerCmd(c, "logs", "-t", "-f", fmt.Sprintf("--since=%v", since), name) c.Assert(out, checker.Not(checker.HasLen), 0, check.Commentf("cannot read from empty log")) lines := strings.Split(strings.TrimSpace(out), "\n") for _, v := range lines { ts, err := time.Parse(time.RFC3339Nano, strings.Split(v, " ")[0]) c.Assert(err, checker.IsNil, check.Commentf("cannot parse timestamp output from log: '%v'", v)) c.Assert(ts.Unix() >= 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) { // TODO Windows: Fix this test for TP5. testRequires(c, DaemonIsLinux) out, _ := dockerCmd(c, "run", "-d", "busybox", "/bin/sh", "-c", `usleep 600000;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 := testutil.ConsumeWithSpeed(stdout, 10, 50*time.Millisecond, stopSlowRead) c.Assert(err, checker.IsNil) // After the container has finished we can continue reading fast bytes2, err := testutil.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) { 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) nroutines, err := getGoroutineNumber() c.Assert(err, checker.IsNil) 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) r.Close() // NGoroutines is not updated right away, so we need to wait before failing c.Assert(waitForGoroutines(nroutines), checker.IsNil) } func (s *DockerSuite) TestLogsFollowGoroutinesNoOutput(c *check.C) { 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) nroutines, err := getGoroutineNumber() c.Assert(err, checker.IsNil) 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 c.Assert(waitForGoroutines(nroutines), checker.IsNil) } func (s *DockerSuite) TestLogsCLIContainerNotFound(c *check.C) { name := "testlogsnocontainer" out, _, _ := dockerCmdWithError("logs", name) message := fmt.Sprintf("No such container: %s\n", name) c.Assert(out, checker.Contains, message) } func (s *DockerSuite) TestLogsWithDetails(c *check.C) { dockerCmd(c, "run", "--name=test", "--label", "foo=bar", "-e", "baz=qux", "--log-opt", "labels=foo", "--log-opt", "env=baz", "busybox", "echo", "hello") out, _ := dockerCmd(c, "logs", "--details", "--timestamps", "test") logFields := strings.Fields(strings.TrimSpace(out)) c.Assert(len(logFields), checker.Equals, 3, check.Commentf(out)) details := strings.Split(logFields[1], ",") c.Assert(details, checker.HasLen, 2) c.Assert(details[0], checker.Equals, "baz=qux") c.Assert(details[1], checker.Equals, "foo=bar") }