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Handle run --rm against older daemons on the cli

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For previous versions of Docker, `--rm` was handled client side, as such
there was no support in the daemon for it.
Now it is handled daemon side, but we still need to handle the case of a
newer client talking to an older daemon.

Falls back to client-side removal when the daemon does not support it.

Signed-off-by: Brian Goff <cpuguy83@gmail.com>
(cherry picked from commit f4bb8c51de)
Signed-off-by: Victor Vieux <victorvieux@gmail.com>
This commit is contained in:
Brian Goff 2016-11-15 12:10:02 -05:00 committed by Victor Vieux
parent 2d5f5287c3
commit b4c0b07d89
1 changed files with 33 additions and 22 deletions
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55
cli/command/container/utils.go
View file

@ -9,6 +9,7 @@ import (
"github.com/docker/docker/api/types"
"github.com/docker/docker/api/types/events"
"github.com/docker/docker/api/types/filters"
"github.com/docker/docker/api/types/versions"
"github.com/docker/docker/cli/command"
clientapi "github.com/docker/docker/client"
)
@ -19,11 +20,21 @@ func waitExitOrRemoved(dockerCli *command.DockerCli, ctx context.Context, contai
panic("Internal Error: waitExitOrRemoved needs a containerID as parameter")
}
var removeErr error
statusChan := make(chan int)
exitCode := 125
eventProcessor := func(e events.Message) bool {
// Get events via Events API
f := filters.NewArgs()
f.Add("type", "container")
f.Add("container", containerID)
options := types.EventsOptions{
Filters: f,
}
eventCtx, cancel := context.WithCancel(ctx)
eventq, errq := dockerCli.Client().Events(eventCtx, options)
eventProcessor := func(e events.Message) bool {
stopProcessing := false
switch e.Status {
case "die":
@ -37,6 +48,18 @@ func waitExitOrRemoved(dockerCli *command.DockerCli, ctx context.Context, contai
}
if !waitRemove {
stopProcessing = true
} else {
// If we are talking to an older daemon, `AutoRemove` is not supported.
// We need to fall back to the old behavior, which is client-side removal
if versions.LessThan(dockerCli.Client().ClientVersion(), "1.25") {
go func() {
removeErr = dockerCli.Client().ContainerRemove(ctx, containerID, types.ContainerRemoveOptions{RemoveVolumes: true})
if removeErr != nil {
logrus.Errorf("error removing container: %v", removeErr)
cancel() // cancel the event Q
}
}()
}
}
case "detach":
exitCode = 0
@ -44,39 +67,27 @@ func waitExitOrRemoved(dockerCli *command.DockerCli, ctx context.Context, contai
case "destroy":
stopProcessing = true
}
if stopProcessing {
statusChan <- exitCode
return true
}
return false
return stopProcessing
}
// Get events via Events API
f := filters.NewArgs()
f.Add("type", "container")
f.Add("container", containerID)
options := types.EventsOptions{
Filters: f,
}
eventCtx, cancel := context.WithCancel(ctx)
eventq, errq := dockerCli.Client().Events(eventCtx, options)
go func() {
defer cancel()
defer func() {
statusChan <- exitCode // must always send an exit code or the caller will block
cancel()
}()
for {
select {
case <-eventCtx.Done():
if removeErr != nil {
return
}
case evt := <-eventq:
if eventProcessor(evt) {
return
}
case err := <-errq:
logrus.Errorf("error getting events from daemon: %v", err)
statusChan <- exitCode
return
}
}