moby/integration-cli/docker_cli_service_logs_experimental_test.go
Andrea Luzzardi c7995fdc77 cli: docker service logs support
Signed-off-by: Andrea Luzzardi <aluzzardi@gmail.com>
2016-11-10 13:46:02 -08:00

55 lines
1.2 KiB
Go

// +build !windows
package main
import (
"bufio"
"io"
"os/exec"
"strings"
"github.com/docker/docker/pkg/integration/checker"
"github.com/go-check/check"
)
type logMessage struct {
err error
data []byte
}
func (s *DockerSwarmSuite) TestServiceLogs(c *check.C) {
testRequires(c, ExperimentalDaemon)
d := s.AddDaemon(c, true, true)
name := "TestServiceLogs"
out, err := d.Cmd("service", "create", "--name", name, "busybox", "sh", "-c", "while true; do echo log test; sleep 1; done")
c.Assert(err, checker.IsNil)
c.Assert(strings.TrimSpace(out), checker.Not(checker.Equals), "")
// make sure task has been deployed.
waitAndAssert(c, defaultReconciliationTimeout, d.checkActiveContainerCount, checker.Equals, 1)
args := []string{"service", "logs", "-f", name}
cmd := exec.Command(dockerBinary, d.prependHostArg(args)...)
r, w := io.Pipe()
cmd.Stdout = w
cmd.Stderr = w
c.Assert(cmd.Start(), checker.IsNil)
// Make sure pipe is written to
ch := make(chan *logMessage)
go func() {
reader := bufio.NewReader(r)
msg := &logMessage{}
msg.data, _, msg.err = reader.ReadLine()
ch <- msg
}()
msg := <-ch
c.Assert(msg.err, checker.IsNil)
c.Assert(string(msg.data), checker.Contains, "log test")
c.Assert(cmd.Process.Kill(), checker.IsNil)
}