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moby--moby/integration-cli/docker_cli_pause_test.go
Brian Goff c3feb046b9 Allow stopping of paused container
When a container is paused, signals are sent once the container has been
unpaused.
Instead of forcing the user to unpause a container before they can ever
send a signal, allow the user to send the signals, and in the case of a
stop signal, automatically unpause the container afterwards.

This is much safer than unpausing the container first then sending a
signal (what a user is currently forced to do), as the container may be
paused for very good reasons and should not be unpaused except for
stopping.
Note that not even SIGKILL is possible while a process is paused,
but it is killed the instant it is unpaused.

Signed-off-by: Brian Goff <cpuguy83@gmail.com>
2017-07-12 10:35:48 -04:00

78 lines
2.4 KiB
Go

package main
import (
"strings"
"time"
"github.com/docker/docker/integration-cli/checker"
"github.com/docker/docker/integration-cli/cli"
"github.com/go-check/check"
)
func (s *DockerSuite) TestPause(c *check.C) {
testRequires(c, IsPausable)
name := "testeventpause"
runSleepingContainer(c, "-d", "--name", name)
cli.DockerCmd(c, "pause", name)
pausedContainers := strings.Fields(
cli.DockerCmd(c, "ps", "-f", "status=paused", "-q", "-a").Combined(),
)
c.Assert(len(pausedContainers), checker.Equals, 1)
cli.DockerCmd(c, "unpause", name)
out := cli.DockerCmd(c, "events", "--since=0", "--until", daemonUnixTime(c)).Combined()
events := strings.Split(strings.TrimSpace(out), "\n")
actions := eventActionsByIDAndType(c, events, name, "container")
c.Assert(actions[len(actions)-2], checker.Equals, "pause")
c.Assert(actions[len(actions)-1], checker.Equals, "unpause")
}
func (s *DockerSuite) TestPauseMultipleContainers(c *check.C) {
testRequires(c, IsPausable)
containers := []string{
"testpausewithmorecontainers1",
"testpausewithmorecontainers2",
}
for _, name := range containers {
runSleepingContainer(c, "-d", "--name", name)
}
cli.DockerCmd(c, append([]string{"pause"}, containers...)...)
pausedContainers := strings.Fields(
cli.DockerCmd(c, "ps", "-f", "status=paused", "-q", "-a").Combined(),
)
c.Assert(len(pausedContainers), checker.Equals, len(containers))
cli.DockerCmd(c, append([]string{"unpause"}, containers...)...)
out := cli.DockerCmd(c, "events", "--since=0", "--until", daemonUnixTime(c)).Combined()
events := strings.Split(strings.TrimSpace(out), "\n")
for _, name := range containers {
actions := eventActionsByIDAndType(c, events, name, "container")
c.Assert(actions[len(actions)-2], checker.Equals, "pause")
c.Assert(actions[len(actions)-1], checker.Equals, "unpause")
}
}
func (s *DockerSuite) TestPauseFailsOnWindowsServerContainers(c *check.C) {
testRequires(c, DaemonIsWindows, NotPausable)
runSleepingContainer(c, "-d", "--name=test")
out, _, _ := dockerCmdWithError("pause", "test")
c.Assert(out, checker.Contains, "cannot pause Windows Server Containers")
}
func (s *DockerSuite) TestStopPausedContainer(c *check.C) {
testRequires(c, DaemonIsLinux)
id := runSleepingContainer(c)
cli.WaitRun(c, id)
cli.DockerCmd(c, "pause", id)
cli.DockerCmd(c, "stop", id)
cli.WaitForInspectResult(c, id, "{{.State.Running}}", "false", 30*time.Second)
}