63 lines
2.2 KiB
Go
63 lines
2.2 KiB
Go
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package libcontainerd // import "github.com/docker/docker/libcontainerd"
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import (
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"context"
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"github.com/containerd/containerd"
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"github.com/opencontainers/runtime-spec/specs-go"
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"github.com/pkg/errors"
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"github.com/sirupsen/logrus"
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"github.com/docker/docker/errdefs"
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"github.com/docker/docker/libcontainerd/types"
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)
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// ReplaceContainer creates a new container, replacing any existing container
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// with the same id if necessary.
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func ReplaceContainer(ctx context.Context, client types.Client, id string, spec *specs.Spec, shim string, runtimeOptions interface{}, opts ...containerd.NewContainerOpts) (types.Container, error) {
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newContainer := func() (types.Container, error) {
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return client.NewContainer(ctx, id, spec, shim, runtimeOptions, opts...)
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}
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ctr, err := newContainer()
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if err == nil || !errdefs.IsConflict(err) {
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return ctr, err
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}
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log := logrus.WithContext(ctx).WithField("container", id)
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log.Debug("A container already exists with the same ID. Attempting to clean up the old container.")
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ctr, err = client.LoadContainer(ctx, id)
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if err != nil {
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if errdefs.IsNotFound(err) {
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// Task failed successfully: the container no longer exists,
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// despite us not doing anything. May as well try to create
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// the container again. It might succeed.
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return newContainer()
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}
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return nil, errors.Wrap(err, "could not load stale containerd container object")
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}
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tsk, err := ctr.Task(ctx)
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if err != nil {
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if errdefs.IsNotFound(err) {
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goto deleteContainer
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}
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// There is no point in trying to delete the container if we
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// cannot determine whether or not it has a task. The containerd
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// client would just try to load the task itself, get the same
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// error, and give up.
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return nil, errors.Wrap(err, "could not load stale containerd task object")
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}
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if err := tsk.ForceDelete(ctx); err != nil {
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if !errdefs.IsNotFound(err) {
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return nil, errors.Wrap(err, "could not delete stale containerd task object")
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}
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// The task might have exited on its own. Proceed with
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// attempting to delete the container.
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}
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deleteContainer:
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if err := ctr.Delete(ctx); err != nil && !errdefs.IsNotFound(err) {
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return nil, errors.Wrap(err, "could not delete stale containerd container object")
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}
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return newContainer()
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}
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