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moby--moby/integration-cli/docker_cli_logs_test.go

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package main
import (
"fmt"
"os/exec"
"regexp"
"strings"
"testing"
"time"
"github.com/docker/docker/pkg/timeutils"
)
// This used to work, it test a log of PageSize-1 (gh#4851)
func TestLogsContainerSmallerThanPage(t *testing.T) {
testLen := 32767
runCmd := exec.Command(dockerBinary, "run", "-d", "busybox", "sh", "-c", fmt.Sprintf("for i in $(seq 1 %d); do echo -n =; done; echo", testLen))
out, _, _, err := runCommandWithStdoutStderr(runCmd)
if err != nil {
t.Fatalf("run failed with errors: %s, %v", out, err)
}
cleanedContainerID := stripTrailingCharacters(out)
exec.Command(dockerBinary, "wait", cleanedContainerID).Run()
logsCmd := exec.Command(dockerBinary, "logs", cleanedContainerID)
out, _, _, err = runCommandWithStdoutStderr(logsCmd)
if err != nil {
t.Fatalf("failed to log container: %s, %v", out, err)
}
if len(out) != testLen+1 {
t.Fatalf("Expected log length of %d, received %d\n", testLen+1, len(out))
}
deleteContainer(cleanedContainerID)
logDone("logs - logs container running echo smaller than page size")
}
// Regression test: When going over the PageSize, it used to panic (gh#4851)
func TestLogsContainerBiggerThanPage(t *testing.T) {
testLen := 32768
runCmd := exec.Command(dockerBinary, "run", "-d", "busybox", "sh", "-c", fmt.Sprintf("for i in $(seq 1 %d); do echo -n =; done; echo", testLen))
out, _, _, err := runCommandWithStdoutStderr(runCmd)
if err != nil {
t.Fatalf("run failed with errors: %s, %v", out, err)
}
cleanedContainerID := stripTrailingCharacters(out)
exec.Command(dockerBinary, "wait", cleanedContainerID).Run()
logsCmd := exec.Command(dockerBinary, "logs", cleanedContainerID)
out, _, _, err = runCommandWithStdoutStderr(logsCmd)
if err != nil {
t.Fatalf("failed to log container: %s, %v", out, err)
}
if len(out) != testLen+1 {
t.Fatalf("Expected log length of %d, received %d\n", testLen+1, len(out))
}
deleteContainer(cleanedContainerID)
logDone("logs - logs container running echo bigger than page size")
}
// Regression test: When going much over the PageSize, it used to block (gh#4851)
func TestLogsContainerMuchBiggerThanPage(t *testing.T) {
testLen := 33000
runCmd := exec.Command(dockerBinary, "run", "-d", "busybox", "sh", "-c", fmt.Sprintf("for i in $(seq 1 %d); do echo -n =; done; echo", testLen))
out, _, _, err := runCommandWithStdoutStderr(runCmd)
if err != nil {
t.Fatalf("run failed with errors: %s, %v", out, err)
}
cleanedContainerID := stripTrailingCharacters(out)
exec.Command(dockerBinary, "wait", cleanedContainerID).Run()
logsCmd := exec.Command(dockerBinary, "logs", cleanedContainerID)
out, _, _, err = runCommandWithStdoutStderr(logsCmd)
if err != nil {
t.Fatalf("failed to log container: %s, %v", out, err)
}
if len(out) != testLen+1 {
t.Fatalf("Expected log length of %d, received %d\n", testLen+1, len(out))
}
deleteContainer(cleanedContainerID)
logDone("logs - logs container running echo much bigger than page size")
}
func TestLogsTimestamps(t *testing.T) {
testLen := 100
runCmd := exec.Command(dockerBinary, "run", "-d", "busybox", "sh", "-c", fmt.Sprintf("for i in $(seq 1 %d); do echo =; done;", testLen))
out, _, _, err := runCommandWithStdoutStderr(runCmd)
if err != nil {
t.Fatalf("run failed with errors: %s, %v", out, err)
}
cleanedContainerID := stripTrailingCharacters(out)
exec.Command(dockerBinary, "wait", cleanedContainerID).Run()
logsCmd := exec.Command(dockerBinary, "logs", "-t", cleanedContainerID)
out, _, _, err = runCommandWithStdoutStderr(logsCmd)
if err != nil {
t.Fatalf("failed to log container: %s, %v", out, err)
}
lines := strings.Split(out, "\n")
if len(lines) != testLen+1 {
t.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 {
t.Fatalf("Failed to parse timestamp from %v: %v", l, err)
}
if l[29] != 'Z' { // ensure we have padded 0's
t.Fatalf("Timestamp isn't padded properly: %s", l)
}
}
}
deleteContainer(cleanedContainerID)
logDone("logs - logs with timestamps")
}
func TestLogsSeparateStderr(t *testing.T) {
msg := "stderr_log"
runCmd := exec.Command(dockerBinary, "run", "-d", "busybox", "sh", "-c", fmt.Sprintf("echo %s 1>&2", msg))
out, _, _, err := runCommandWithStdoutStderr(runCmd)
if err != nil {
t.Fatalf("run failed with errors: %s, %v", out, err)
}
cleanedContainerID := stripTrailingCharacters(out)
exec.Command(dockerBinary, "wait", cleanedContainerID).Run()
logsCmd := exec.Command(dockerBinary, "logs", cleanedContainerID)
stdout, stderr, _, err := runCommandWithStdoutStderr(logsCmd)
if err != nil {
t.Fatalf("failed to log container: %s, %v", out, err)
}
if stdout != "" {
t.Fatalf("Expected empty stdout stream, got %v", stdout)
}
stderr = strings.TrimSpace(stderr)
if stderr != msg {
t.Fatalf("Expected %v in stderr stream, got %v", msg, stderr)
}
deleteContainer(cleanedContainerID)
logDone("logs - separate stderr (without pseudo-tty)")
}
func TestLogsStderrInStdout(t *testing.T) {
msg := "stderr_log"
runCmd := exec.Command(dockerBinary, "run", "-d", "-t", "busybox", "sh", "-c", fmt.Sprintf("echo %s 1>&2", msg))
out, _, _, err := runCommandWithStdoutStderr(runCmd)
if err != nil {
t.Fatalf("run failed with errors: %s, %v", out, err)
}
cleanedContainerID := stripTrailingCharacters(out)
exec.Command(dockerBinary, "wait", cleanedContainerID).Run()
logsCmd := exec.Command(dockerBinary, "logs", cleanedContainerID)
stdout, stderr, _, err := runCommandWithStdoutStderr(logsCmd)
if err != nil {
t.Fatalf("failed to log container: %s, %v", out, err)
}
if stderr != "" {
t.Fatalf("Expected empty stderr stream, got %v", stdout)
}
stdout = strings.TrimSpace(stdout)
if stdout != msg {
t.Fatalf("Expected %v in stdout stream, got %v", msg, stdout)
}
deleteContainer(cleanedContainerID)
logDone("logs - stderr in stdout (with pseudo-tty)")
}
func TestLogsTail(t *testing.T) {
testLen := 100
runCmd := exec.Command(dockerBinary, "run", "-d", "busybox", "sh", "-c", fmt.Sprintf("for i in $(seq 1 %d); do echo =; done;", testLen))
out, _, _, err := runCommandWithStdoutStderr(runCmd)
if err != nil {
t.Fatalf("run failed with errors: %s, %v", out, err)
}
cleanedContainerID := stripTrailingCharacters(out)
exec.Command(dockerBinary, "wait", cleanedContainerID).Run()
logsCmd := exec.Command(dockerBinary, "logs", "--tail", "5", cleanedContainerID)
out, _, _, err = runCommandWithStdoutStderr(logsCmd)
if err != nil {
t.Fatalf("failed to log container: %s, %v", out, err)
}
lines := strings.Split(out, "\n")
if len(lines) != 6 {
t.Fatalf("Expected log %d lines, received %d\n", 6, len(lines))
}
logsCmd = exec.Command(dockerBinary, "logs", "--tail", "all", cleanedContainerID)
out, _, _, err = runCommandWithStdoutStderr(logsCmd)
if err != nil {
t.Fatalf("failed to log container: %s, %v", out, err)
}
lines = strings.Split(out, "\n")
if len(lines) != testLen+1 {
t.Fatalf("Expected log %d lines, received %d\n", testLen+1, len(lines))
}
logsCmd = exec.Command(dockerBinary, "logs", "--tail", "random", cleanedContainerID)
out, _, _, err = runCommandWithStdoutStderr(logsCmd)
if err != nil {
t.Fatalf("failed to log container: %s, %v", out, err)
}
lines = strings.Split(out, "\n")
if len(lines) != testLen+1 {
t.Fatalf("Expected log %d lines, received %d\n", testLen+1, len(lines))
}
deleteContainer(cleanedContainerID)
logDone("logs - logs tail")
}
func TestLogsFollowStopped(t *testing.T) {
runCmd := exec.Command(dockerBinary, "run", "-d", "busybox", "echo", "hello")
out, _, _, err := runCommandWithStdoutStderr(runCmd)
if err != nil {
t.Fatalf("run failed with errors: %s, %v", out, err)
}
cleanedContainerID := stripTrailingCharacters(out)
exec.Command(dockerBinary, "wait", cleanedContainerID).Run()
logsCmd := exec.Command(dockerBinary, "logs", "-f", cleanedContainerID)
if err := logsCmd.Start(); err != nil {
t.Fatal(err)
}
c := make(chan struct{})
go func() {
if err := logsCmd.Wait(); err != nil {
t.Fatal(err)
}
close(c)
}()
select {
case <-c:
case <-time.After(1 * time.Second):
t.Fatal("Following logs is hanged")
}
deleteContainer(cleanedContainerID)
logDone("logs - logs follow stopped container")
}
// Regression test for #8832
func TestLogsFollowSlowStdoutConsumer(t *testing.T) {
runCmd := exec.Command(dockerBinary, "run", "-d", "busybox", "/bin/sh", "-c", `usleep 200000;yes X | head -c 200000`)
out, _, _, err := runCommandWithStdoutStderr(runCmd)
if err != nil {
t.Fatalf("run failed with errors: %s, %v", out, err)
}
cleanedContainerID := stripTrailingCharacters(out)
defer deleteContainer(cleanedContainerID)
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()
if err != nil {
t.Fatal(err)
}
if err := logCmd.Start(); err != nil {
t.Fatal(err)
}
// First read slowly
bytes1, err := consumeWithSpeed(stdout, 10, 50*time.Millisecond, stopSlowRead)
if err != nil {
t.Fatal(err)
}
// After the container has finished we can continue reading fast
bytes2, err := consumeWithSpeed(stdout, 32*1024, 0, nil)
if err != nil {
t.Fatal(err)
}
actual := bytes1 + bytes2
expected := 200000
if actual != expected {
t.Fatalf("Invalid bytes read: %d, expected %d", actual, expected)
}
logDone("logs - follow slow consumer")
}