mirror of
https://github.com/moby/moby.git
synced 2022-11-09 12:21:53 -05:00
363 lines
10 KiB
Go
363 lines
10 KiB
Go
package main
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import (
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"encoding/json"
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"fmt"
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"io"
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"os/exec"
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"regexp"
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"strconv"
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"strings"
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"time"
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"github.com/docker/docker/pkg/timeutils"
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"github.com/go-check/check"
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)
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// This used to work, it test a log of PageSize-1 (gh#4851)
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func (s *DockerSuite) TestLogsContainerSmallerThanPage(c *check.C) {
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testLen := 32767
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out, _ := dockerCmd(c, "run", "-d", "busybox", "sh", "-c", fmt.Sprintf("for i in $(seq 1 %d); do echo -n =; done; echo", testLen))
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cleanedContainerID := strings.TrimSpace(out)
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dockerCmd(c, "wait", cleanedContainerID)
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out, _ = dockerCmd(c, "logs", cleanedContainerID)
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if len(out) != testLen+1 {
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c.Fatalf("Expected log length of %d, received %d\n", testLen+1, len(out))
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}
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}
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// Regression test: When going over the PageSize, it used to panic (gh#4851)
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func (s *DockerSuite) TestLogsContainerBiggerThanPage(c *check.C) {
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testLen := 32768
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out, _ := dockerCmd(c, "run", "-d", "busybox", "sh", "-c", fmt.Sprintf("for i in $(seq 1 %d); do echo -n =; done; echo", testLen))
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cleanedContainerID := strings.TrimSpace(out)
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dockerCmd(c, "wait", cleanedContainerID)
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out, _ = dockerCmd(c, "logs", cleanedContainerID)
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if len(out) != testLen+1 {
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c.Fatalf("Expected log length of %d, received %d\n", testLen+1, len(out))
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}
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}
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// Regression test: When going much over the PageSize, it used to block (gh#4851)
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func (s *DockerSuite) TestLogsContainerMuchBiggerThanPage(c *check.C) {
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testLen := 33000
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out, _ := dockerCmd(c, "run", "-d", "busybox", "sh", "-c", fmt.Sprintf("for i in $(seq 1 %d); do echo -n =; done; echo", testLen))
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cleanedContainerID := strings.TrimSpace(out)
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dockerCmd(c, "wait", cleanedContainerID)
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out, _ = dockerCmd(c, "logs", cleanedContainerID)
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if len(out) != testLen+1 {
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c.Fatalf("Expected log length of %d, received %d\n", testLen+1, len(out))
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}
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}
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func (s *DockerSuite) TestLogsTimestamps(c *check.C) {
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testLen := 100
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out, _ := dockerCmd(c, "run", "-d", "busybox", "sh", "-c", fmt.Sprintf("for i in $(seq 1 %d); do echo =; done;", testLen))
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cleanedContainerID := strings.TrimSpace(out)
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dockerCmd(c, "wait", cleanedContainerID)
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out, _ = dockerCmd(c, "logs", "-t", cleanedContainerID)
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lines := strings.Split(out, "\n")
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if len(lines) != testLen+1 {
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c.Fatalf("Expected log %d lines, received %d\n", testLen+1, len(lines))
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}
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ts := regexp.MustCompile(`^.* `)
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for _, l := range lines {
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if l != "" {
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_, err := time.Parse(timeutils.RFC3339NanoFixed+" ", ts.FindString(l))
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if err != nil {
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c.Fatalf("Failed to parse timestamp from %v: %v", l, err)
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}
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if l[29] != 'Z' { // ensure we have padded 0's
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c.Fatalf("Timestamp isn't padded properly: %s", l)
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}
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}
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}
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}
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func (s *DockerSuite) TestLogsSeparateStderr(c *check.C) {
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msg := "stderr_log"
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out, _ := dockerCmd(c, "run", "-d", "busybox", "sh", "-c", fmt.Sprintf("echo %s 1>&2", msg))
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cleanedContainerID := strings.TrimSpace(out)
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dockerCmd(c, "wait", cleanedContainerID)
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stdout, stderr, _ := dockerCmdWithStdoutStderr(c, "logs", cleanedContainerID)
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if stdout != "" {
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c.Fatalf("Expected empty stdout stream, got %v", stdout)
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}
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stderr = strings.TrimSpace(stderr)
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if stderr != msg {
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c.Fatalf("Expected %v in stderr stream, got %v", msg, stderr)
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}
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}
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func (s *DockerSuite) TestLogsStderrInStdout(c *check.C) {
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msg := "stderr_log"
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out, _ := dockerCmd(c, "run", "-d", "-t", "busybox", "sh", "-c", fmt.Sprintf("echo %s 1>&2", msg))
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cleanedContainerID := strings.TrimSpace(out)
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dockerCmd(c, "wait", cleanedContainerID)
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stdout, stderr, _ := dockerCmdWithStdoutStderr(c, "logs", cleanedContainerID)
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if stderr != "" {
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c.Fatalf("Expected empty stderr stream, got %v", stderr)
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}
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stdout = strings.TrimSpace(stdout)
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if stdout != msg {
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c.Fatalf("Expected %v in stdout stream, got %v", msg, stdout)
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}
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}
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func (s *DockerSuite) TestLogsTail(c *check.C) {
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testLen := 100
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out, _ := dockerCmd(c, "run", "-d", "busybox", "sh", "-c", fmt.Sprintf("for i in $(seq 1 %d); do echo =; done;", testLen))
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cleanedContainerID := strings.TrimSpace(out)
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dockerCmd(c, "wait", cleanedContainerID)
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out, _ = dockerCmd(c, "logs", "--tail", "5", cleanedContainerID)
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lines := strings.Split(out, "\n")
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if len(lines) != 6 {
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c.Fatalf("Expected log %d lines, received %d\n", 6, len(lines))
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}
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out, _ = dockerCmd(c, "logs", "--tail", "all", cleanedContainerID)
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lines = strings.Split(out, "\n")
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if len(lines) != testLen+1 {
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c.Fatalf("Expected log %d lines, received %d\n", testLen+1, len(lines))
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}
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out, _, _ = dockerCmdWithStdoutStderr(c, "logs", "--tail", "random", cleanedContainerID)
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lines = strings.Split(out, "\n")
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if len(lines) != testLen+1 {
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c.Fatalf("Expected log %d lines, received %d\n", testLen+1, len(lines))
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}
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}
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func (s *DockerSuite) TestLogsFollowStopped(c *check.C) {
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out, _ := dockerCmd(c, "run", "-d", "busybox", "echo", "hello")
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cleanedContainerID := strings.TrimSpace(out)
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dockerCmd(c, "wait", cleanedContainerID)
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logsCmd := exec.Command(dockerBinary, "logs", "-f", cleanedContainerID)
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if err := logsCmd.Start(); err != nil {
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c.Fatal(err)
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}
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errChan := make(chan error)
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go func() {
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errChan <- logsCmd.Wait()
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close(errChan)
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}()
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select {
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case err := <-errChan:
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c.Assert(err, check.IsNil)
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case <-time.After(1 * time.Second):
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c.Fatal("Following logs is hanged")
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}
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}
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func (s *DockerSuite) TestLogsSince(c *check.C) {
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name := "testlogssince"
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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")
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log2Line := strings.Split(strings.Split(out, "\n")[1], " ")
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t, err := strconv.ParseInt(log2Line[0], 10, 64) // the timestamp log2 is written
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c.Assert(err, check.IsNil)
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since := t + 1 // add 1s so log1 & log2 doesn't show up
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out, _ = dockerCmd(c, "logs", "-t", fmt.Sprintf("--since=%v", since), name)
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// Skip 2 seconds
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unexpected := []string{"log1", "log2"}
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for _, v := range unexpected {
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if strings.Contains(out, v) {
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c.Fatalf("unexpected log message returned=%v, since=%v\nout=%v", v, since, out)
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}
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}
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// Test with default value specified and parameter omitted
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expected := []string{"log1", "log2", "log3"}
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for _, cmd := range []*exec.Cmd{
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exec.Command(dockerBinary, "logs", "-t", name),
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exec.Command(dockerBinary, "logs", "-t", "--since=0", name),
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} {
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out, _, err = runCommandWithOutput(cmd)
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if err != nil {
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c.Fatalf("failed to log container: %s, %v", out, err)
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}
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for _, v := range expected {
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if !strings.Contains(out, v) {
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c.Fatalf("'%v' does not contain=%v\nout=%s", cmd.Args, v, out)
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}
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}
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}
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}
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func (s *DockerSuite) TestLogsSinceFutureFollow(c *check.C) {
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out, _ := dockerCmd(c, "run", "-d", "busybox", "/bin/sh", "-c", `for i in $(seq 1 5); do date +%s; sleep 1; done`)
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cleanedContainerID := strings.TrimSpace(out)
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now := daemonTime(c).Unix()
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since := now + 2
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out, _ = dockerCmd(c, "logs", "-f", fmt.Sprintf("--since=%v", since), cleanedContainerID)
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lines := strings.Split(strings.TrimSpace(out), "\n")
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if len(lines) == 0 {
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c.Fatal("got no log lines")
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}
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for _, v := range lines {
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ts, err := strconv.ParseInt(v, 10, 64)
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if err != nil {
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c.Fatalf("cannot parse timestamp output from log: '%v'\nout=%s", v, out)
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}
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if ts < since {
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c.Fatalf("earlier log found. since=%v logdate=%v", since, ts)
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}
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}
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}
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// Regression test for #8832
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func (s *DockerSuite) TestLogsFollowSlowStdoutConsumer(c *check.C) {
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out, _ := dockerCmd(c, "run", "-d", "busybox", "/bin/sh", "-c", `usleep 200000;yes X | head -c 200000`)
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cleanedContainerID := strings.TrimSpace(out)
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stopSlowRead := make(chan bool)
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go func() {
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exec.Command(dockerBinary, "wait", cleanedContainerID).Run()
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stopSlowRead <- true
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}()
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logCmd := exec.Command(dockerBinary, "logs", "-f", cleanedContainerID)
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stdout, err := logCmd.StdoutPipe()
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c.Assert(err, check.IsNil)
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c.Assert(logCmd.Start(), check.IsNil)
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// First read slowly
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bytes1, err := consumeWithSpeed(stdout, 10, 50*time.Millisecond, stopSlowRead)
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c.Assert(err, check.IsNil)
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// After the container has finished we can continue reading fast
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bytes2, err := consumeWithSpeed(stdout, 32*1024, 0, nil)
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c.Assert(err, check.IsNil)
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actual := bytes1 + bytes2
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expected := 200000
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if actual != expected {
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c.Fatalf("Invalid bytes read: %d, expected %d", actual, expected)
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}
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}
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func (s *DockerSuite) TestLogsFollowGoroutinesWithStdout(c *check.C) {
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out, _ := dockerCmd(c, "run", "-d", "busybox", "/bin/sh", "-c", "while true; do echo hello; sleep 2; done")
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id := strings.TrimSpace(out)
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c.Assert(waitRun(id), check.IsNil)
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type info struct {
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NGoroutines int
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}
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getNGoroutines := func() int {
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var i info
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status, b, err := sockRequest("GET", "/info", nil)
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c.Assert(err, check.IsNil)
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c.Assert(status, check.Equals, 200)
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c.Assert(json.Unmarshal(b, &i), check.IsNil)
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return i.NGoroutines
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}
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nroutines := getNGoroutines()
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cmd := exec.Command(dockerBinary, "logs", "-f", id)
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r, w := io.Pipe()
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cmd.Stdout = w
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c.Assert(cmd.Start(), check.IsNil)
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// Make sure pipe is written to
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chErr := make(chan error)
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go func() {
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b := make([]byte, 1)
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_, err := r.Read(b)
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chErr <- err
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}()
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c.Assert(<-chErr, check.IsNil)
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c.Assert(cmd.Process.Kill(), check.IsNil)
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// NGoroutines is not updated right away, so we need to wait before failing
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t := time.After(30 * time.Second)
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for {
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select {
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case <-t:
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if n := getNGoroutines(); n > nroutines {
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c.Fatalf("leaked goroutines: expected less than or equal to %d, got: %d", nroutines, n)
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}
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default:
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if n := getNGoroutines(); n <= nroutines {
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return
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}
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time.Sleep(200 * time.Millisecond)
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}
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}
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}
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func (s *DockerSuite) TestLogsFollowGoroutinesNoOutput(c *check.C) {
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out, _ := dockerCmd(c, "run", "-d", "busybox", "/bin/sh", "-c", "while true; do sleep 2; done")
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id := strings.TrimSpace(out)
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c.Assert(waitRun(id), check.IsNil)
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type info struct {
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NGoroutines int
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}
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getNGoroutines := func() int {
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var i info
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status, b, err := sockRequest("GET", "/info", nil)
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c.Assert(err, check.IsNil)
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c.Assert(status, check.Equals, 200)
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c.Assert(json.Unmarshal(b, &i), check.IsNil)
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return i.NGoroutines
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}
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nroutines := getNGoroutines()
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cmd := exec.Command(dockerBinary, "logs", "-f", id)
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c.Assert(cmd.Start(), check.IsNil)
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time.Sleep(200 * time.Millisecond)
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c.Assert(cmd.Process.Kill(), check.IsNil)
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// NGoroutines is not updated right away, so we need to wait before failing
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t := time.After(30 * time.Second)
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for {
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select {
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case <-t:
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if n := getNGoroutines(); n > nroutines {
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c.Fatalf("leaked goroutines: expected less than or equal to %d, got: %d", nroutines, n)
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}
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default:
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if n := getNGoroutines(); n <= nroutines {
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return
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}
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time.Sleep(200 * time.Millisecond)
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}
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}
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}
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