Add state pattern for container state transition

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

Add state status() method

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

Allow multiple checkpoint on restore

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

Handle leave-running state

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

Fix state transitions for inprocess

Because the tests use libcontainer in process between the various states
we need to ensure that that usecase works as well as the out of process
one.

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

Remove isDestroyed method

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

Handling Pausing from freezer state

Signed-off-by: Rajasekaran <rajasec79@gmail.com>

freezer status

Signed-off-by: Rajasekaran <rajasec79@gmail.com>

Fixing review comments

Signed-off-by: Rajasekaran <rajasec79@gmail.com>

Added comment when freezer not available

Signed-off-by: Rajasekaran <rajasec79@gmail.com>
Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

Conflicts:
	libcontainer/container_linux.go

Change checkFreezer logic to isPaused()

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

Remove state base and factor out destroy func

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

Add unit test for state transitions

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
This commit is contained in:
Michael Crosby
2015-10-02 11:16:50 -07:00
parent 9d6ce7168a
commit 4415446c32
10 changed files with 435 additions and 131 deletions
+6 -29
View File
@@ -5,7 +5,6 @@ package main
import (
"fmt"
"os"
"path/filepath"
"github.com/Sirupsen/logrus"
"github.com/codegangsta/cli"
@@ -109,24 +108,12 @@ func restoreContainer(context *cli.Context, spec *specs.LinuxSpec, config *confi
// ensure that the container is always removed if we were the process
// that created it.
defer func() {
if err != nil {
return
}
status, err := container.Status()
if err != nil {
logrus.Error(err)
}
if status != libcontainer.Checkpointed {
if err := container.Destroy(); err != nil {
logrus.Error(err)
}
if err := os.RemoveAll(options.ImagesDirectory); err != nil {
logrus.Error(err)
}
}
}()
process := &libcontainer.Process{}
defer destroy(container)
process := &libcontainer.Process{
Stdin: os.Stdin,
Stdout: os.Stdout,
Stderr: os.Stderr,
}
tty, err := newTty(spec.Process.Terminal, process, rootuid)
if err != nil {
return -1, err
@@ -134,16 +121,6 @@ func restoreContainer(context *cli.Context, spec *specs.LinuxSpec, config *confi
handler := newSignalHandler(tty)
defer handler.Close()
if err := container.Restore(process, options); err != nil {
cstatus, cerr := container.Status()
if cerr != nil {
logrus.Error(cerr)
}
if cstatus == libcontainer.Destroyed {
dest := filepath.Join(context.GlobalString("root"), context.GlobalString("id"))
if errVal := os.RemoveAll(dest); errVal != nil {
logrus.Error(errVal)
}
}
return -1, err
}
return handler.forward(process)