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Add ability to pause/unpause containers via cgroups freeze

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This patch adds pause/unpause to the command line, api, and drivers
for use on containers.  This is implemented using the cgroups/freeze
utility in libcontainer and lxc freeze/unfreeze.

Co-Authored-By: Eric Windisch <ewindisch@docker.com>
Co-Authored-By: Chris Alfonso <calfonso@redhat.com>
Docker-DCO-1.1-Signed-off-by: Ian Main <imain@redhat.com> (github: imain)
This commit is contained in:
Ian Main
2014-05-21 15:06:18 -06:00
committed by Chris Alfonso
parent 1f5b323208
commit b054569cde
10 changed files with 248 additions and 0 deletions
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32
api/server/server.go
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@ -165,6 +165,36 @@ func postContainersKill(eng *engine.Engine, version version.Version, w http.Resp
return nil
}
func postContainersPause(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if vars == nil {
return fmt.Errorf("Missing parameter")
}
if err := parseForm(r); err != nil {
return err
}
job := eng.Job("pause", vars["name"])
if err := job.Run(); err != nil {
return err
}
w.WriteHeader(http.StatusNoContent)
return nil
}
func postContainersUnpause(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if vars == nil {
return fmt.Errorf("Missing parameter")
}
if err := parseForm(r); err != nil {
return err
}
job := eng.Job("unpause", vars["name"])
if err := job.Run(); err != nil {
return err
}
w.WriteHeader(http.StatusNoContent)
return nil
}
func getContainersExport(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if vars == nil {
return fmt.Errorf("Missing parameter")
@ -1087,6 +1117,8 @@ func createRouter(eng *engine.Engine, logging, enableCors bool, dockerVersion st
"/images/{name:.*}/tag": postImagesTag,
"/containers/create": postContainersCreate,
"/containers/{name:.*}/kill": postContainersKill,
"/containers/{name:.*}/pause": postContainersPause,
"/containers/{name:.*}/unpause": postContainersUnpause,
"/containers/{name:.*}/restart": postContainersRestart,
"/containers/{name:.*}/start": postContainersStart,
"/containers/{name:.*}/stop": postContainersStop,