Example #1
0
func updateService(flags *pflag.FlagSet, spec *swarm.ServiceSpec) error {
	updateString := func(flag string, field *string) {
		if flags.Changed(flag) {
			*field, _ = flags.GetString(flag)
		}
	}

	updateInt64Value := func(flag string, field *int64) {
		if flags.Changed(flag) {
			*field = flags.Lookup(flag).Value.(int64Value).Value()
		}
	}

	updateFloat32 := func(flag string, field *float32) {
		if flags.Changed(flag) {
			*field, _ = flags.GetFloat32(flag)
		}
	}

	updateDuration := func(flag string, field *time.Duration) {
		if flags.Changed(flag) {
			*field, _ = flags.GetDuration(flag)
		}
	}

	updateDurationOpt := func(flag string, field **time.Duration) {
		if flags.Changed(flag) {
			val := *flags.Lookup(flag).Value.(*DurationOpt).Value()
			*field = &val
		}
	}

	updateUint64 := func(flag string, field *uint64) {
		if flags.Changed(flag) {
			*field, _ = flags.GetUint64(flag)
		}
	}

	updateUint64Opt := func(flag string, field **uint64) {
		if flags.Changed(flag) {
			val := *flags.Lookup(flag).Value.(*Uint64Opt).Value()
			*field = &val
		}
	}

	cspec := &spec.TaskTemplate.ContainerSpec
	task := &spec.TaskTemplate

	taskResources := func() *swarm.ResourceRequirements {
		if task.Resources == nil {
			task.Resources = &swarm.ResourceRequirements{}
		}
		return task.Resources
	}

	updateLabels(flags, &spec.Labels)
	updateContainerLabels(flags, &cspec.Labels)
	updateString("image", &cspec.Image)
	updateStringToSlice(flags, "args", &cspec.Args)
	updateEnvironment(flags, &cspec.Env)
	updateString(flagWorkdir, &cspec.Dir)
	updateString(flagUser, &cspec.User)
	updateMounts(flags, &cspec.Mounts)

	if flags.Changed(flagLimitCPU) || flags.Changed(flagLimitMemory) {
		taskResources().Limits = &swarm.Resources{}
		updateInt64Value(flagLimitCPU, &task.Resources.Limits.NanoCPUs)
		updateInt64Value(flagLimitMemory, &task.Resources.Limits.MemoryBytes)
	}
	if flags.Changed(flagReserveCPU) || flags.Changed(flagReserveMemory) {
		taskResources().Reservations = &swarm.Resources{}
		updateInt64Value(flagReserveCPU, &task.Resources.Reservations.NanoCPUs)
		updateInt64Value(flagReserveMemory, &task.Resources.Reservations.MemoryBytes)
	}

	updateDurationOpt(flagStopGracePeriod, &cspec.StopGracePeriod)

	if anyChanged(flags, flagRestartCondition, flagRestartDelay, flagRestartMaxAttempts, flagRestartWindow) {
		if task.RestartPolicy == nil {
			task.RestartPolicy = &swarm.RestartPolicy{}
		}

		if flags.Changed(flagRestartCondition) {
			value, _ := flags.GetString(flagRestartCondition)
			task.RestartPolicy.Condition = swarm.RestartPolicyCondition(value)
		}
		updateDurationOpt(flagRestartDelay, &task.RestartPolicy.Delay)
		updateUint64Opt(flagRestartMaxAttempts, &task.RestartPolicy.MaxAttempts)
		updateDurationOpt(flagRestartWindow, &task.RestartPolicy.Window)
	}

	if anyChanged(flags, flagConstraintAdd, flagConstraintRemove) {
		if task.Placement == nil {
			task.Placement = &swarm.Placement{}
		}
		updatePlacement(flags, task.Placement)
	}

	if err := updateReplicas(flags, &spec.Mode); err != nil {
		return err
	}

	if anyChanged(flags, flagUpdateParallelism, flagUpdateDelay, flagUpdateMonitor, flagUpdateFailureAction, flagUpdateMaxFailureRatio) {
		if spec.UpdateConfig == nil {
			spec.UpdateConfig = &swarm.UpdateConfig{}
		}
		updateUint64(flagUpdateParallelism, &spec.UpdateConfig.Parallelism)
		updateDuration(flagUpdateDelay, &spec.UpdateConfig.Delay)
		updateDuration(flagUpdateMonitor, &spec.UpdateConfig.Monitor)
		updateString(flagUpdateFailureAction, &spec.UpdateConfig.FailureAction)
		updateFloat32(flagUpdateMaxFailureRatio, &spec.UpdateConfig.MaxFailureRatio)
	}

	if flags.Changed(flagEndpointMode) {
		value, _ := flags.GetString(flagEndpointMode)
		if spec.EndpointSpec == nil {
			spec.EndpointSpec = &swarm.EndpointSpec{}
		}
		spec.EndpointSpec.Mode = swarm.ResolutionMode(value)
	}

	if anyChanged(flags, flagGroupAdd, flagGroupRemove) {
		if err := updateGroups(flags, &cspec.Groups); err != nil {
			return err
		}
	}

	if anyChanged(flags, flagPublishAdd, flagPublishRemove) {
		if spec.EndpointSpec == nil {
			spec.EndpointSpec = &swarm.EndpointSpec{}
		}
		if err := updatePorts(flags, &spec.EndpointSpec.Ports); err != nil {
			return err
		}
	}

	if err := updateLogDriver(flags, &spec.TaskTemplate); err != nil {
		return err
	}

	force, err := flags.GetBool("force")
	if err != nil {
		return err
	}

	if force {
		spec.TaskTemplate.ForceUpdate++
	}

	if err := updateHealthcheck(flags, cspec); err != nil {
		return err
	}

	return nil
}