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Fix issues with plugin and --live-restore

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Fixes an issue when starting the daemon with live-restore
where previously it was not set, plugins are not running.

Fixes an issue when starting the daemon with live-restore, the plugin
client (for interacting with the plugins HTTP interface) is not set,
causing a panic when the plugin is called.

Signed-off-by: Brian Goff <cpuguy83@gmail.com>
(cherry picked from commit cb6633175c)
Signed-off-by: Victor Vieux <vieux@docker.com>
This commit is contained in:
Brian Goff 2016-12-09 12:53:10 -05:00 • committed by Victor Vieux
parent 47b838db40
commit 4e08d8ef03
2 changed files with 30 additions and 3 deletions
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7
integration-cli/docker_cli_daemon_plugins_test.go
View file

@ -145,7 +145,7 @@ func (s *DockerDaemonSuite) TestDaemonShutdownLiveRestoreWithPlugins(c *check.C)
// TestDaemonShutdownWithPlugins shuts down running plugins.
func (s *DockerDaemonSuite) TestDaemonShutdownWithPlugins(c *check.C) {
testRequires(c, IsAmd64, Network)
testRequires(c, IsAmd64, Network, SameHostDaemon)
if err := s.d.Start(); err != nil {
c.Fatalf("Could not start daemon: %v", err)
@ -180,6 +180,11 @@ func (s *DockerDaemonSuite) TestDaemonShutdownWithPlugins(c *check.C) {
if out, ec, err := runCommandWithOutput(cmd); ec != 1 {
c.Fatalf("Expected exit code '1', got %d err: %v output: %s ", ec, err, out)
}
s.d.Start("--live-restore")
cmd = exec.Command("pgrep", "-f", pluginProcessName)
out, _, err := runCommandWithOutput(cmd)
c.Assert(err, checker.IsNil, check.Commentf(out))
}
// TestVolumePlugin tests volume creation using a plugin.

26
plugin/manager_linux.go
View file

@ -49,6 +49,10 @@ func (pm *Manager) enable(p *v2.Plugin, c *controller, force bool) error {
return err
}
return pm.pluginPostStart(p, c)
}
func (pm *Manager) pluginPostStart(p *v2.Plugin, c *controller) error {
client, err := plugins.NewClientWithTimeout("unix://"+filepath.Join(p.GetRuntimeSourcePath(), p.GetSocket()), nil, c.timeoutInSecs)
if err != nil {
c.restart = false
@ -59,12 +63,30 @@ func (pm *Manager) enable(p *v2.Plugin, c *controller, force bool) error {
p.SetPClient(client)
pm.pluginStore.SetState(p, true)
pm.pluginStore.CallHandler(p)
return nil
}
func (pm *Manager) restore(p *v2.Plugin) error {
return pm.containerdClient.Restore(p.GetID(), attachToLog(p.GetID()))
if err := pm.containerdClient.Restore(p.GetID(), attachToLog(p.GetID())); err != nil {
return err
}
if pm.liveRestore {
c := &controller{}
if pids, _ := pm.containerdClient.GetPidsForContainer(p.GetID()); len(pids) == 0 {
// plugin is not running, so follow normal startup procedure
return pm.enable(p, c, true)
}
c.exitChan = make(chan bool)
c.restart = true
pm.mu.Lock()
pm.cMap[p] = c
pm.mu.Unlock()
return pm.pluginPostStart(p, c)
}
return nil
}
func shutdownPlugin(p *v2.Plugin, c *controller, containerdClient libcontainerd.Client) {