| package main |
| |
| import ( |
| "encoding/json" |
| "fmt" |
| "io" |
| "os/exec" |
| "regexp" |
| "strconv" |
| "strings" |
| "time" |
| |
| "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) { |
| testLen := 32767 |
| out, _ := dockerCmd(c, "run", "-d", "busybox", "sh", "-c", fmt.Sprintf("for i in $(seq 1 %d); do echo -n =; done; echo", testLen)) |
| cleanedContainerID := strings.TrimSpace(out) |
| |
| dockerCmd(c, "wait", cleanedContainerID) |
| out, _ = dockerCmd(c, "logs", cleanedContainerID) |
| if len(out) != testLen+1 { |
| c.Fatalf("Expected log length of %d, received %d\n", testLen+1, len(out)) |
| } |
| } |
| |
| // Regression test: When going over the PageSize, it used to panic (gh#4851) |
| func (s *DockerSuite) TestLogsContainerBiggerThanPage(c *check.C) { |
| testLen := 32768 |
| out, _ := dockerCmd(c, "run", "-d", "busybox", "sh", "-c", fmt.Sprintf("for i in $(seq 1 %d); do echo -n =; done; echo", testLen)) |
| |
| cleanedContainerID := strings.TrimSpace(out) |
| dockerCmd(c, "wait", cleanedContainerID) |
| |
| out, _ = dockerCmd(c, "logs", cleanedContainerID) |
| |
| if len(out) != testLen+1 { |
| c.Fatalf("Expected log length of %d, received %d\n", testLen+1, len(out)) |
| } |
| } |
| |
| // Regression test: When going much over the PageSize, it used to block (gh#4851) |
| func (s *DockerSuite) TestLogsContainerMuchBiggerThanPage(c *check.C) { |
| testLen := 33000 |
| out, _ := dockerCmd(c, "run", "-d", "busybox", "sh", "-c", fmt.Sprintf("for i in $(seq 1 %d); do echo -n =; done; echo", testLen)) |
| |
| cleanedContainerID := strings.TrimSpace(out) |
| dockerCmd(c, "wait", cleanedContainerID) |
| |
| out, _ = dockerCmd(c, "logs", cleanedContainerID) |
| |
| if len(out) != testLen+1 { |
| c.Fatalf("Expected log length of %d, received %d\n", testLen+1, len(out)) |
| } |
| } |
| |
| 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 =; done;", testLen)) |
| |
| cleanedContainerID := strings.TrimSpace(out) |
| dockerCmd(c, "wait", cleanedContainerID) |
| |
| out, _ = dockerCmd(c, "logs", "-t", cleanedContainerID) |
| |
| lines := strings.Split(out, "\n") |
| |
| if len(lines) != testLen+1 { |
| c.Fatalf("Expected log %d lines, received %d\n", testLen+1, len(lines)) |
| } |
| |
| ts := regexp.MustCompile(`^.* `) |
| |
| for _, l := range lines { |
| if l != "" { |
| _, err := time.Parse(timeutils.RFC3339NanoFixed+" ", ts.FindString(l)) |
| if err != nil { |
| c.Fatalf("Failed to parse timestamp from %v: %v", l, err) |
| } |
| if l[29] != 'Z' { // ensure we have padded 0's |
| c.Fatalf("Timestamp isn't padded properly: %s", l) |
| } |
| } |
| } |
| } |
| |
| 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)) |
| |
| cleanedContainerID := strings.TrimSpace(out) |
| dockerCmd(c, "wait", cleanedContainerID) |
| |
| stdout, stderr, _ := dockerCmdWithStdoutStderr(c, "logs", cleanedContainerID) |
| |
| if stdout != "" { |
| c.Fatalf("Expected empty stdout stream, got %v", stdout) |
| } |
| |
| stderr = strings.TrimSpace(stderr) |
| if stderr != msg { |
| c.Fatalf("Expected %v in stderr stream, got %v", msg, stderr) |
| } |
| } |
| |
| func (s *DockerSuite) TestLogsStderrInStdout(c *check.C) { |
| msg := "stderr_log" |
| out, _ := dockerCmd(c, "run", "-d", "-t", "busybox", "sh", "-c", fmt.Sprintf("echo %s 1>&2", msg)) |
| |
| cleanedContainerID := strings.TrimSpace(out) |
| dockerCmd(c, "wait", cleanedContainerID) |
| |
| stdout, stderr, _ := dockerCmdWithStdoutStderr(c, "logs", cleanedContainerID) |
| if stderr != "" { |
| c.Fatalf("Expected empty stderr stream, got %v", stderr) |
| } |
| |
| stdout = strings.TrimSpace(stdout) |
| if stdout != msg { |
| c.Fatalf("Expected %v in stdout stream, got %v", msg, stdout) |
| } |
| } |
| |
| 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)) |
| |
| cleanedContainerID := strings.TrimSpace(out) |
| dockerCmd(c, "wait", cleanedContainerID) |
| |
| out, _ = dockerCmd(c, "logs", "--tail", "5", cleanedContainerID) |
| |
| lines := strings.Split(out, "\n") |
| |
| if len(lines) != 6 { |
| c.Fatalf("Expected log %d lines, received %d\n", 6, len(lines)) |
| } |
| out, _ = dockerCmd(c, "logs", "--tail", "all", cleanedContainerID) |
| |
| lines = strings.Split(out, "\n") |
| |
| if len(lines) != testLen+1 { |
| c.Fatalf("Expected log %d lines, received %d\n", testLen+1, len(lines)) |
| } |
| out, _, _ = dockerCmdWithStdoutStderr(c, "logs", "--tail", "random", cleanedContainerID) |
| |
| lines = strings.Split(out, "\n") |
| |
| if len(lines) != testLen+1 { |
| c.Fatalf("Expected log %d lines, received %d\n", testLen+1, len(lines)) |
| } |
| } |
| |
| func (s *DockerSuite) TestLogsFollowStopped(c *check.C) { |
| out, _ := dockerCmd(c, "run", "-d", "busybox", "echo", "hello") |
| |
| cleanedContainerID := strings.TrimSpace(out) |
| dockerCmd(c, "wait", cleanedContainerID) |
| |
| logsCmd := exec.Command(dockerBinary, "logs", "-f", cleanedContainerID) |
| if err := logsCmd.Start(); err != nil { |
| c.Fatal(err) |
| } |
| |
| errChan := make(chan error) |
| go func() { |
| errChan <- logsCmd.Wait() |
| close(errChan) |
| }() |
| |
| select { |
| case err := <-errChan: |
| c.Assert(err, check.IsNil) |
| case <-time.After(1 * time.Second): |
| c.Fatal("Following logs is hanged") |
| } |
| } |
| |
| func (s *DockerSuite) TestLogsSince(c *check.C) { |
| 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 writen |
| c.Assert(err, check.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 { |
| if strings.Contains(out, v) { |
| c.Fatalf("unexpected log message returned=%v, since=%v\nout=%v", v, since, out) |
| } |
| } |
| // 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) |
| if err != nil { |
| c.Fatalf("failed to log container: %s, %v", out, err) |
| } |
| for _, v := range expected { |
| if !strings.Contains(out, v) { |
| c.Fatalf("'%v' does not contain=%v\nout=%s", cmd.Args, v, out) |
| } |
| } |
| } |
| } |
| |
| func (s *DockerSuite) TestLogsSinceFutureFollow(c *check.C) { |
| out, _ := dockerCmd(c, "run", "-d", "busybox", "/bin/sh", "-c", `for i in $(seq 1 5); do date +%s; sleep 1; done`) |
| cleanedContainerID := strings.TrimSpace(out) |
| |
| now := daemonTime(c).Unix() |
| since := now + 2 |
| out, _ = dockerCmd(c, "logs", "-f", fmt.Sprintf("--since=%v", since), cleanedContainerID) |
| lines := strings.Split(strings.TrimSpace(out), "\n") |
| if len(lines) == 0 { |
| c.Fatal("got no log lines") |
| } |
| for _, v := range lines { |
| ts, err := strconv.ParseInt(v, 10, 64) |
| if err != nil { |
| c.Fatalf("cannot parse timestamp output from log: '%v'\nout=%s", v, out) |
| } |
| if ts < since { |
| c.Fatalf("earlier log found. since=%v logdate=%v", since, ts) |
| } |
| } |
| } |
| |
| // Regression test for #8832 |
| func (s *DockerSuite) TestLogsFollowSlowStdoutConsumer(c *check.C) { |
| out, _ := dockerCmd(c, "run", "-d", "busybox", "/bin/sh", "-c", `usleep 200000;yes X | head -c 200000`) |
| |
| cleanedContainerID := strings.TrimSpace(out) |
| |
| stopSlowRead := make(chan bool) |
| |
| go func() { |
| exec.Command(dockerBinary, "wait", cleanedContainerID).Run() |
| stopSlowRead <- true |
| }() |
| |
| logCmd := exec.Command(dockerBinary, "logs", "-f", cleanedContainerID) |
| stdout, err := logCmd.StdoutPipe() |
| c.Assert(err, check.IsNil) |
| c.Assert(logCmd.Start(), check.IsNil) |
| |
| // First read slowly |
| bytes1, err := consumeWithSpeed(stdout, 10, 50*time.Millisecond, stopSlowRead) |
| c.Assert(err, check.IsNil) |
| |
| // After the container has finished we can continue reading fast |
| bytes2, err := consumeWithSpeed(stdout, 32*1024, 0, nil) |
| c.Assert(err, check.IsNil) |
| |
| actual := bytes1 + bytes2 |
| expected := 200000 |
| if actual != expected { |
| c.Fatalf("Invalid bytes read: %d, expected %d", actual, 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), check.IsNil) |
| |
| type info struct { |
| NGoroutines int |
| } |
| getNGoroutines := func() int { |
| var i info |
| status, b, err := sockRequest("GET", "/info", nil) |
| c.Assert(err, check.IsNil) |
| c.Assert(status, check.Equals, 200) |
| c.Assert(json.Unmarshal(b, &i), check.IsNil) |
| return i.NGoroutines |
| } |
| |
| nroutines := getNGoroutines() |
| |
| cmd := exec.Command(dockerBinary, "logs", "-f", id) |
| r, w := io.Pipe() |
| cmd.Stdout = w |
| c.Assert(cmd.Start(), check.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, check.IsNil) |
| c.Assert(cmd.Process.Kill(), check.IsNil) |
| |
| // NGoroutines is not updated right away, so we need to wait before failing |
| t := time.After(30 * time.Second) |
| for { |
| select { |
| case <-t: |
| if n := getNGoroutines(); n > nroutines { |
| c.Fatalf("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) { |
| out, _ := dockerCmd(c, "run", "-d", "busybox", "/bin/sh", "-c", "while true; do sleep 2; done") |
| id := strings.TrimSpace(out) |
| c.Assert(waitRun(id), check.IsNil) |
| |
| type info struct { |
| NGoroutines int |
| } |
| getNGoroutines := func() int { |
| var i info |
| status, b, err := sockRequest("GET", "/info", nil) |
| c.Assert(err, check.IsNil) |
| c.Assert(status, check.Equals, 200) |
| c.Assert(json.Unmarshal(b, &i), check.IsNil) |
| return i.NGoroutines |
| } |
| |
| nroutines := getNGoroutines() |
| |
| cmd := exec.Command(dockerBinary, "logs", "-f", id) |
| c.Assert(cmd.Start(), check.IsNil) |
| time.Sleep(200 * time.Millisecond) |
| c.Assert(cmd.Process.Kill(), check.IsNil) |
| |
| // NGoroutines is not updated right away, so we need to wait before failing |
| t := time.After(30 * time.Second) |
| for { |
| select { |
| case <-t: |
| if n := getNGoroutines(); n > nroutines { |
| c.Fatalf("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) |
| } |
| } |
| } |
