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moby--moby/integration-cli/docker_cli_logs_test.go
Alexander Morozov 0c7c9df804 integration-cli: move goroutines info helpers to separate funcs
Signed-off-by: Alexander Morozov <lk4d4@docker.com>
2016-03-14 15:52:56 -07:00

309 lines
9.9 KiB
Go

package main
import (
"fmt"
"io"
"os/exec"
"regexp"
"strings"
"time"
"github.com/docker/docker/pkg/integration/checker"
"github.com/docker/docker/pkg/jsonlog"
"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 = >> 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)
}
// 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 = >> 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)
}
// 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 = >> 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", "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) {
dockerCmd(c, "run", "--name=test", "busybox", "echo", "hello")
id, err := getIDByName("test")
c.Assert(err, check.IsNil)
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 []*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) {
// TODO Windows: Flakey on TP4. Enable for next technical preview.
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: Consider enabling post-TP4. Too expensive to run on TP4
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 := 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) {
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)
// 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("Error: No such container: %s\n", name)
c.Assert(out, checker.Equals, message)
}