Function updateContainer

cmd/nerdctl/container/container_update.go:245–380

(ctx context.Context, client *containerd.Client, id string, opts updateResourceOptions, cmd *cobra.Command)

}

func updateContainer(ctx context.Context, client *containerd.Client, id string, opts updateResourceOptions, cmd *cobra.Command) (retErr error) {
	container, err := client.LoadContainer(ctx, id)
	if err != nil {
		return err
	}
	cStatus := formatter.ContainerStatus(ctx, container)
	if cStatus == "pausing" {
		return fmt.Errorf("container %q is in pausing state", id)
	}
	spec, err := container.Spec(ctx)
	if err != nil {
		return err
	}

	oldSpec, err := copySpec(spec)
	if err != nil {
		return err
	}
	if runtime.GOOS == "linux" {
		if spec.Linux == nil {
			spec.Linux = &runtimespec.Linux{}
		}
		if spec.Linux.Resources == nil {
			spec.Linux.Resources = &runtimespec.LinuxResources{}
		}
		if cmd.Flags().Changed("blkio-weight") {
			if spec.Linux.Resources.BlockIO == nil {
				spec.Linux.Resources.BlockIO = &runtimespec.LinuxBlockIO{}
			}
			if spec.Linux.Resources.BlockIO.Weight != &opts.BlkioWeight {
				spec.Linux.Resources.BlockIO.Weight = &opts.BlkioWeight
			}
		}
		if cmd.Flags().Changed("cpu-shares") || cmd.Flags().Changed("cpu-quota") || cmd.Flags().Changed("cpu-period") || cmd.Flags().Changed("cpus") || cmd.Flags().Changed("cpuset-mems") || cmd.Flags().Changed("cpuset-cpus") {
			if spec.Linux.Resources.CPU == nil {
				spec.Linux.Resources.CPU = &runtimespec.LinuxCPU{}
			}
		}
		if cmd.Flags().Changed("cpu-shares") {
			if spec.Linux.Resources.CPU.Shares != &opts.CPUShares {
				spec.Linux.Resources.CPU.Shares = &opts.CPUShares
			}
		}
		if cmd.Flags().Changed("cpu-quota") {
			if spec.Linux.Resources.CPU.Quota != &opts.CPUQuota {
				spec.Linux.Resources.CPU.Quota = &opts.CPUQuota
			}
		}
		if cmd.Flags().Changed("cpu-period") {
			if spec.Linux.Resources.CPU.Period != &opts.CPUPeriod {
				spec.Linux.Resources.CPU.Period = &opts.CPUPeriod
			}
		}
		if cmd.Flags().Changed("cpus") {
			if spec.Linux.Resources.CPU.Cpus != opts.CpusetCpus {
				spec.Linux.Resources.CPU.Cpus = opts.CpusetCpus
			}
		}