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Idle Hot Container Freeze/Preempt Support (#733)

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* fn: freeze/unfreeze and eject idle under resource contention
This commit is contained in:
Tolga Ceylan
2018-02-07 17:21:53 -08:00
committed by GitHub
parent 105947d031
commit f27d47f2dd
8 changed files with 184 additions and 22 deletions
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27
api/agent/drivers/docker/docker_client.go
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@@ -19,6 +19,7 @@ import (
const (
retryTimeout = 10 * time.Minute
pauseTimeout = 5 * time.Second
)
// wrap docker client calls so we can retry 500s, kind of sucks but fsouza doesn't
@@ -34,6 +35,8 @@ type dockerClient interface {
StartContainerWithContext(id string, hostConfig *docker.HostConfig, ctx context.Context) error
CreateContainer(opts docker.CreateContainerOptions) (*docker.Container, error)
RemoveContainer(opts docker.RemoveContainerOptions) error
PauseContainer(id string, ctx context.Context) error
UnpauseContainer(id string, ctx context.Context) error
PullImage(opts docker.PullImageOptions, auth docker.AuthConfiguration) error
InspectImage(ctx context.Context, name string) (*docker.Image, error)
InspectContainerWithContext(container string, ctx context.Context) (*docker.Container, error)
@@ -260,6 +263,30 @@ func (d *dockerWrap) RemoveContainer(opts docker.RemoveContainerOptions) (err er
return filterNoSuchContainer(ctx, err)
}
func (d *dockerWrap) PauseContainer(id string, ctx context.Context) (err error) {
span, _ := opentracing.StartSpanFromContext(ctx, "docker_pause_container")
defer span.Finish()
ctx, cancel := context.WithTimeout(ctx, pauseTimeout)
defer cancel()
err = d.retry(ctx, func() error {
err = d.docker.PauseContainer(id)
return err
})
return filterNoSuchContainer(ctx, err)
}
func (d *dockerWrap) UnpauseContainer(id string, ctx context.Context) (err error) {
span, _ := opentracing.StartSpanFromContext(ctx, "docker_unpause_container")
defer span.Finish()
ctx, cancel := context.WithTimeout(ctx, pauseTimeout)
defer cancel()
err = d.retry(ctx, func() error {
err = d.docker.UnpauseContainer(id)
return err
})
return filterNoSuchContainer(ctx, err)
}
func (d *dockerWrap) InspectImage(ctx context.Context, name string) (i *docker.Image, err error) {
span, ctx := opentracing.StartSpanFromContext(ctx, "docker_inspect_image")
defer span.Finish()