func cleanUp()

in sources/host-ctr/cmd/host-ctr/main.go [503:552]
45 lines of code
10 McCabe index (conditional complexity)

func cleanUp(containerdSocket string, namespace string, containerID string) error {
	ctx, cancel := context.WithCancel(context.Background())
	defer cancel()
	ctx = namespaces.WithNamespace(ctx, namespace)

	client, err := newContainerdClient(ctx, containerdSocket, namespace)
	if err != nil {
		return err
	}
	defer client.Close()

	container, err := client.LoadContainer(ctx, containerID)
	if err != nil {
		if errdefs.IsNotFound(err) {
			log.G(ctx).WithField("container-id", containerID).Info("container does not exist, no clean up necessary")
			return nil
		}
		log.G(ctx).WithField("container-id", containerID).WithError(err).Error("failed to retrieve list of containers")
		return err
	}
	if container != nil {
		log.G(ctx).WithField("container-id", containerID).Info("container exists, deleting")
		// Kill task associated with existing container if it exists
		task, err := container.Task(ctx, nil)
		if err != nil {
			// No associated task found, proceed to delete existing container
			if errdefs.IsNotFound(err) {
				log.G(ctx).WithField("container-id", containerID).Info("no task associated with existing container")
			} else {
				log.G(ctx).WithField("container-id", containerID).WithError(err).Error("failed to retrieve task associated with existing container")
				return err
			}
		}
		if task != nil {
			_, err := task.Delete(ctx, containerd.WithProcessKill)
			if err != nil {
				log.G(ctx).WithField("container-id", containerID).WithError(err).Error("failed to delete existing container task")
				return err
			}
			log.G(ctx).WithField("container-id", containerID).Info("killed existing container task")
		}
		if err := container.Delete(ctx, containerd.WithSnapshotCleanup); err != nil {
			log.G(ctx).WithField("container-id", containerID).WithError(err).Error("failed to delete existing container")
			return err
		}
		log.G(ctx).WithField("container-id", containerID).Info("deleted existing container")
	}

	return nil
}