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libcontainerd: wait for restart after state change 

Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
This commit is contained in:
Tonis Tiigi 2016-08-03 13:45:46 -07:00
parent 6ebf816f80
commit 495448b290
2 changed files with 38 additions and 29 deletions
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35
libcontainerd/container_linux.go
View File

@ -144,6 +144,7 @@ func (ctr *container) handleEvent(e *containerd.Event) error {
defer ctr.client.unlock(ctr.containerID)
switch e.Type {
case StateExit, StatePause, StateResume, StateOOM:
var waitRestart chan error
st := StateInfo{
CommonStateInfo: CommonStateInfo{
State: e.Type,
@ -166,8 +167,26 @@ func (ctr *container) handleEvent(e *containerd.Event) error {
st.State = StateRestart
ctr.restarting = true
ctr.client.deleteContainer(e.Id)
waitRestart = wait
}
}
// Remove process from list if we have exited
// We need to do so here in case the Message Handler decides to restart it.
switch st.State {
case StateExit:
ctr.clean()
ctr.client.deleteContainer(e.Id)
case StateExitProcess:
ctr.cleanProcess(st.ProcessID)
}
ctr.client.q.append(e.Id, func() {
if err := ctr.client.backend.StateChanged(e.Id, st); err != nil {
logrus.Errorf("libcontainerd: backend.StateChanged(): %v", err)
}
if st.State == StateRestart {
go func() {
err := <-wait
err := <-waitRestart
ctr.client.lock(ctr.containerID)
defer ctr.client.unlock(ctr.containerID)
ctr.restarting = false
@ -187,21 +206,7 @@ func (ctr *container) handleEvent(e *containerd.Event) error {
}
}()
}
}
// Remove process from list if we have exited
// We need to do so here in case the Message Handler decides to restart it.
switch st.State {
case StateExit:
ctr.clean()
ctr.client.deleteContainer(e.Id)
case StateExitProcess:
ctr.cleanProcess(st.ProcessID)
}
ctr.client.q.append(e.Id, func() {
if err := ctr.client.backend.StateChanged(e.Id, st); err != nil {
logrus.Errorf("libcontainerd: backend.StateChanged(): %v", err)
}
if e.Type == StatePause || e.Type == StateResume {
ctr.pauseMonitor.handle(e.Type)
}

32
libcontainerd/container_windows.go
View File

@ -195,6 +195,7 @@ func (ctr *container) waitProcessExitCode(process *process) int {
// equivalent to (in the linux containerd world) where events come in for
// state change notifications from containerd.
func (ctr *container) waitExit(process *process, isFirstProcessToStart bool) error {
var waitRestart chan error
logrus.Debugln("libcontainerd: waitExit() on pid", process.systemPid)
exitCode := ctr.waitProcessExitCode(process)
@ -238,20 +239,7 @@ func (ctr *container) waitExit(process *process, isFirstProcessToStart bool) err
} else if restart {
si.State = StateRestart
ctr.restarting = true
go func() {
err := <-wait
ctr.restarting = false
ctr.client.deleteContainer(ctr.friendlyName)
if err != nil {
si.State = StateExit
if err := ctr.client.backend.StateChanged(ctr.containerID, si); err != nil {
logrus.Error(err)
}
logrus.Error(err)
} else {
ctr.client.Create(ctr.containerID, ctr.ociSpec, ctr.options...)
}
}()
waitRestart = wait
}
}
@ -267,6 +255,22 @@ func (ctr *container) waitExit(process *process, isFirstProcessToStart bool) err
if err := ctr.client.backend.StateChanged(ctr.containerID, si); err != nil {
logrus.Error(err)
}
if si.State == StateRestart {
go func() {
err := <-waitRestart
ctr.restarting = false
ctr.client.deleteContainer(ctr.friendlyName)
if err != nil {
si.State = StateExit
if err := ctr.client.backend.StateChanged(ctr.containerID, si); err != nil {
logrus.Error(err)
}
logrus.Error(err)
} else {
ctr.client.Create(ctr.containerID, ctr.ociSpec, ctr.options...)
}
}()
}
logrus.Debugf("libcontainerd: waitExit() completed OK, %+v", si)
return nil