mirror of
https://github.com/moby/moby.git
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387 lines
14 KiB
Go
387 lines
14 KiB
Go
// +build !windows
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package main
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import (
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"bufio"
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"fmt"
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"io"
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"os/exec"
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"strings"
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"time"
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"github.com/docker/docker/integration-cli/checker"
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"github.com/docker/docker/integration-cli/daemon"
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"github.com/go-check/check"
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"github.com/gotestyourself/gotestyourself/icmd"
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)
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type logMessage struct {
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err error
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data []byte
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}
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func (s *DockerSwarmSuite) TestServiceLogs(c *check.C) {
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d := s.AddDaemon(c, true, true)
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// we have multiple services here for detecting the goroutine issue #28915
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services := map[string]string{
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"TestServiceLogs1": "hello1",
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"TestServiceLogs2": "hello2",
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}
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for name, message := range services {
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out, err := d.Cmd("service", "create", "--no-resolve-image", "--name", name, "busybox",
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"sh", "-c", fmt.Sprintf("echo %s; tail -f /dev/null", message))
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c.Assert(err, checker.IsNil)
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c.Assert(strings.TrimSpace(out), checker.Not(checker.Equals), "")
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}
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// make sure task has been deployed.
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waitAndAssert(c, defaultReconciliationTimeout,
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d.CheckRunningTaskImages, checker.DeepEquals,
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map[string]int{"busybox:latest": len(services)})
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for name, message := range services {
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out, err := d.Cmd("service", "logs", name)
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c.Assert(err, checker.IsNil)
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c.Logf("log for %q: %q", name, out)
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c.Assert(out, checker.Contains, message)
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}
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}
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// countLogLines returns a closure that can be used with waitAndAssert to
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// verify that a minimum number of expected container log messages have been
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// output.
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func countLogLines(d *daemon.Swarm, name string) func(*check.C) (interface{}, check.CommentInterface) {
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return func(c *check.C) (interface{}, check.CommentInterface) {
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result := icmd.RunCmd(d.Command("service", "logs", "-t", "--raw", name))
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result.Assert(c, icmd.Expected{})
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// if this returns an emptystring, trying to split it later will return
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// an array containing emptystring. a valid log line will NEVER be
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// emptystring because we ask for the timestamp.
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if result.Stdout() == "" {
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return 0, check.Commentf("Empty stdout")
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}
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lines := strings.Split(strings.TrimSpace(result.Stdout()), "\n")
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return len(lines), check.Commentf("output, %q", string(result.Stdout()))
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}
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}
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func (s *DockerSwarmSuite) TestServiceLogsCompleteness(c *check.C) {
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d := s.AddDaemon(c, true, true)
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name := "TestServiceLogsCompleteness"
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// make a service that prints 6 lines
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out, err := d.Cmd("service", "create", "--no-resolve-image", "--name", name, "busybox", "sh", "-c", "for line in $(seq 0 5); do echo log test $line; done; sleep 100000")
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c.Assert(err, checker.IsNil)
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c.Assert(strings.TrimSpace(out), checker.Not(checker.Equals), "")
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// make sure task has been deployed.
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waitAndAssert(c, defaultReconciliationTimeout, d.CheckActiveContainerCount, checker.Equals, 1)
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// and make sure we have all the log lines
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waitAndAssert(c, defaultReconciliationTimeout, countLogLines(d, name), checker.Equals, 6)
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out, err = d.Cmd("service", "logs", name)
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c.Assert(err, checker.IsNil)
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lines := strings.Split(strings.TrimSpace(out), "\n")
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// i have heard anecdotal reports that logs may come back from the engine
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// mis-ordered. if this tests fails, consider the possibility that that
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// might be occurring
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for i, line := range lines {
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c.Assert(line, checker.Contains, fmt.Sprintf("log test %v", i))
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}
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}
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func (s *DockerSwarmSuite) TestServiceLogsTail(c *check.C) {
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d := s.AddDaemon(c, true, true)
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name := "TestServiceLogsTail"
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// make a service that prints 6 lines
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out, err := d.Cmd("service", "create", "--no-resolve-image", "--name", name, "busybox", "sh", "-c", "for line in $(seq 1 6); do echo log test $line; done; sleep 100000")
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c.Assert(err, checker.IsNil)
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c.Assert(strings.TrimSpace(out), checker.Not(checker.Equals), "")
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// make sure task has been deployed.
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waitAndAssert(c, defaultReconciliationTimeout, d.CheckActiveContainerCount, checker.Equals, 1)
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waitAndAssert(c, defaultReconciliationTimeout, countLogLines(d, name), checker.Equals, 6)
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out, err = d.Cmd("service", "logs", "--tail=2", name)
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c.Assert(err, checker.IsNil)
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lines := strings.Split(strings.TrimSpace(out), "\n")
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for i, line := range lines {
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// doing i+5 is hacky but not too fragile, it's good enough. if it flakes something else is wrong
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c.Assert(line, checker.Contains, fmt.Sprintf("log test %v", i+5))
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}
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}
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func (s *DockerSwarmSuite) TestServiceLogsSince(c *check.C) {
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// See DockerSuite.TestLogsSince, which is where this comes from
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d := s.AddDaemon(c, true, true)
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name := "TestServiceLogsSince"
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out, err := d.Cmd("service", "create", "--no-resolve-image", "--name", name, "busybox", "sh", "-c", "for i in $(seq 1 3); do sleep .1; echo log$i; done; sleep 10000000")
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c.Assert(err, checker.IsNil)
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c.Assert(strings.TrimSpace(out), checker.Not(checker.Equals), "")
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waitAndAssert(c, defaultReconciliationTimeout, d.CheckActiveContainerCount, checker.Equals, 1)
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// wait a sec for the logs to come in
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waitAndAssert(c, defaultReconciliationTimeout, countLogLines(d, name), checker.Equals, 3)
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out, err = d.Cmd("service", "logs", "-t", name)
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c.Assert(err, checker.IsNil)
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log2Line := strings.Split(strings.Split(out, "\n")[1], " ")
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t, err := time.Parse(time.RFC3339Nano, log2Line[0]) // timestamp log2 is written
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c.Assert(err, checker.IsNil)
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u := t.Add(50 * time.Millisecond) // add .05s so log1 & log2 don't show up
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since := u.Format(time.RFC3339Nano)
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out, err = d.Cmd("service", "logs", "-t", fmt.Sprintf("--since=%v", since), name)
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c.Assert(err, checker.IsNil)
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unexpected := []string{"log1", "log2"}
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expected := []string{"log3"}
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for _, v := range unexpected {
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c.Assert(out, checker.Not(checker.Contains), v, check.Commentf("unexpected log message returned, since=%v", u))
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}
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for _, v := range expected {
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c.Assert(out, checker.Contains, v, check.Commentf("expected log message %v, was not present, since=%v", u))
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}
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}
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func (s *DockerSwarmSuite) TestServiceLogsFollow(c *check.C) {
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d := s.AddDaemon(c, true, true)
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name := "TestServiceLogsFollow"
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out, err := d.Cmd("service", "create", "--no-resolve-image", "--name", name, "busybox", "sh", "-c", "while true; do echo log test; sleep 0.1; done")
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c.Assert(err, checker.IsNil)
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c.Assert(strings.TrimSpace(out), checker.Not(checker.Equals), "")
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// make sure task has been deployed.
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waitAndAssert(c, defaultReconciliationTimeout, d.CheckActiveContainerCount, checker.Equals, 1)
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args := []string{"service", "logs", "-f", name}
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cmd := exec.Command(dockerBinary, d.PrependHostArg(args)...)
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r, w := io.Pipe()
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cmd.Stdout = w
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cmd.Stderr = w
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c.Assert(cmd.Start(), checker.IsNil)
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// Make sure pipe is written to
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ch := make(chan *logMessage)
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done := make(chan struct{})
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go func() {
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reader := bufio.NewReader(r)
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for {
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msg := &logMessage{}
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msg.data, _, msg.err = reader.ReadLine()
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select {
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case ch <- msg:
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case <-done:
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return
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}
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}
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}()
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for i := 0; i < 3; i++ {
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msg := <-ch
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c.Assert(msg.err, checker.IsNil)
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c.Assert(string(msg.data), checker.Contains, "log test")
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}
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close(done)
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c.Assert(cmd.Process.Kill(), checker.IsNil)
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}
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func (s *DockerSwarmSuite) TestServiceLogsTaskLogs(c *check.C) {
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d := s.AddDaemon(c, true, true)
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name := "TestServicelogsTaskLogs"
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replicas := 2
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result := icmd.RunCmd(d.Command(
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// create a service with the name
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"service", "create", "--no-resolve-image", "--name", name,
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// which has some number of replicas
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fmt.Sprintf("--replicas=%v", replicas),
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// which has this the task id as an environment variable templated in
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"--env", "TASK={{.Task.ID}}",
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// and runs this command to print exactly 6 logs lines
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"busybox", "sh", "-c", "for line in $(seq 0 5); do echo $TASK log test $line; done; sleep 100000",
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))
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result.Assert(c, icmd.Expected{})
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// ^^ verify that we get no error
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// then verify that we have an id in stdout
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id := strings.TrimSpace(result.Stdout())
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c.Assert(id, checker.Not(checker.Equals), "")
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// so, right here, we're basically inspecting by id and returning only
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// the ID. if they don't match, the service doesn't exist.
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result = icmd.RunCmd(d.Command("service", "inspect", "--format=\"{{.ID}}\"", id))
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result.Assert(c, icmd.Expected{Out: id})
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// make sure task has been deployed.
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waitAndAssert(c, defaultReconciliationTimeout, d.CheckActiveContainerCount, checker.Equals, replicas)
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waitAndAssert(c, defaultReconciliationTimeout, countLogLines(d, name), checker.Equals, 6*replicas)
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// get the task ids
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result = icmd.RunCmd(d.Command("service", "ps", "-q", name))
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result.Assert(c, icmd.Expected{})
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// make sure we have two tasks
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taskIDs := strings.Split(strings.TrimSpace(result.Stdout()), "\n")
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c.Assert(taskIDs, checker.HasLen, replicas)
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for _, taskID := range taskIDs {
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c.Logf("checking task %v", taskID)
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result := icmd.RunCmd(d.Command("service", "logs", taskID))
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result.Assert(c, icmd.Expected{})
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lines := strings.Split(strings.TrimSpace(result.Stdout()), "\n")
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c.Logf("checking messages for %v", taskID)
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for i, line := range lines {
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// make sure the message is in order
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c.Assert(line, checker.Contains, fmt.Sprintf("log test %v", i))
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// make sure it contains the task id
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c.Assert(line, checker.Contains, taskID)
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}
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}
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}
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func (s *DockerSwarmSuite) TestServiceLogsTTY(c *check.C) {
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d := s.AddDaemon(c, true, true)
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name := "TestServiceLogsTTY"
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result := icmd.RunCmd(d.Command(
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// create a service
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"service", "create", "--no-resolve-image",
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// name it $name
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"--name", name,
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// use a TTY
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"-t",
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// busybox image, shell string
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"busybox", "sh", "-c",
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// echo to stdout and stderr
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"echo out; (echo err 1>&2); sleep 10000",
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))
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result.Assert(c, icmd.Expected{})
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id := strings.TrimSpace(result.Stdout())
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c.Assert(id, checker.Not(checker.Equals), "")
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// so, right here, we're basically inspecting by id and returning only
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// the ID. if they don't match, the service doesn't exist.
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result = icmd.RunCmd(d.Command("service", "inspect", "--format=\"{{.ID}}\"", id))
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result.Assert(c, icmd.Expected{Out: id})
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// make sure task has been deployed.
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waitAndAssert(c, defaultReconciliationTimeout, d.CheckActiveContainerCount, checker.Equals, 1)
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// and make sure we have all the log lines
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waitAndAssert(c, defaultReconciliationTimeout, countLogLines(d, name), checker.Equals, 2)
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cmd := d.Command("service", "logs", "--raw", name)
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result = icmd.RunCmd(cmd)
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// for some reason there is carriage return in the output. i think this is
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// just expected.
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result.Assert(c, icmd.Expected{Out: "out\r\nerr\r\n"})
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}
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func (s *DockerSwarmSuite) TestServiceLogsNoHangDeletedContainer(c *check.C) {
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d := s.AddDaemon(c, true, true)
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name := "TestServiceLogsNoHangDeletedContainer"
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result := icmd.RunCmd(d.Command(
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// create a service
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"service", "create", "--no-resolve-image",
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// name it $name
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"--name", name,
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// busybox image, shell string
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"busybox", "sh", "-c",
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// echo to stdout and stderr
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"while true; do echo line; sleep 2; done",
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))
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// confirm that the command succeeded
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result.Assert(c, icmd.Expected{})
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// get the service id
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id := strings.TrimSpace(result.Stdout())
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c.Assert(id, checker.Not(checker.Equals), "")
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// make sure task has been deployed.
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waitAndAssert(c, defaultReconciliationTimeout, d.CheckActiveContainerCount, checker.Equals, 1)
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// and make sure we have all the log lines
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waitAndAssert(c, defaultReconciliationTimeout, countLogLines(d, name), checker.Equals, 2)
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// now find and nuke the container
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result = icmd.RunCmd(d.Command("ps", "-q"))
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containerID := strings.TrimSpace(result.Stdout())
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c.Assert(containerID, checker.Not(checker.Equals), "")
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result = icmd.RunCmd(d.Command("stop", containerID))
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result.Assert(c, icmd.Expected{Out: containerID})
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result = icmd.RunCmd(d.Command("rm", containerID))
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result.Assert(c, icmd.Expected{Out: containerID})
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// run logs. use tail 2 to make sure we don't try to get a bunch of logs
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// somehow and slow down execution time
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cmd := d.Command("service", "logs", "--tail", "2", id)
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// start the command and then wait for it to finish with a 3 second timeout
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result = icmd.StartCmd(cmd)
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result = icmd.WaitOnCmd(3*time.Second, result)
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// then, assert that the result matches expected. if the command timed out,
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// if the command is timed out, result.Timeout will be true, but the
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// Expected defaults to false
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result.Assert(c, icmd.Expected{})
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}
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func (s *DockerSwarmSuite) TestServiceLogsDetails(c *check.C) {
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d := s.AddDaemon(c, true, true)
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name := "TestServiceLogsDetails"
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result := icmd.RunCmd(d.Command(
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// create a service
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"service", "create", "--no-resolve-image",
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// name it $name
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"--name", name,
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// add an environment variable
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"--env", "asdf=test1",
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// add a log driver (without explicitly setting a driver, log-opt doesn't work)
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"--log-driver", "json-file",
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// add a log option to print the environment variable
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"--log-opt", "env=asdf",
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// busybox image, shell string
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"busybox", "sh", "-c",
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// make a log line
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"echo LogLine; while true; do sleep 1; done;",
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))
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result.Assert(c, icmd.Expected{})
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id := strings.TrimSpace(result.Stdout())
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c.Assert(id, checker.Not(checker.Equals), "")
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// make sure task has been deployed
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waitAndAssert(c, defaultReconciliationTimeout, d.CheckActiveContainerCount, checker.Equals, 1)
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// and make sure we have all the log lines
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waitAndAssert(c, defaultReconciliationTimeout, countLogLines(d, name), checker.Equals, 1)
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// First, test without pretty printing
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// call service logs with details. set raw to skip pretty printing
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result = icmd.RunCmd(d.Command("service", "logs", "--raw", "--details", name))
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// in this case, we should get details and we should get log message, but
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// there will also be context as details (which will fall after the detail
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// we inserted in alphabetical order
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result.Assert(c, icmd.Expected{Out: "asdf=test1"})
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result.Assert(c, icmd.Expected{Out: "LogLine"})
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// call service logs with details. this time, don't pass raw
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result = icmd.RunCmd(d.Command("service", "logs", "--details", id))
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// in this case, we should get details space logmessage as well. the context
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// is part of the pretty part of the logline
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result.Assert(c, icmd.Expected{Out: "asdf=test1 LogLine"})
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}
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