// Code generated by smithy-go-codegen DO NOT EDIT.

package ecs

import (
	"context"
	awsmiddleware "github.com/aws/aws-sdk-go-v2/aws/middleware"
	"github.com/aws/aws-sdk-go-v2/aws/signer/v4"
	"github.com/aws/aws-sdk-go-v2/service/ecs/types"
	"github.com/aws/smithy-go/middleware"
	smithyhttp "github.com/aws/smithy-go/transport/http"
)

// Modifies the status of an Amazon ECS container instance. Once a container
// instance has reached an ACTIVE state, you can change the status of a container
// instance to DRAINING to manually remove an instance from a cluster, for example
// to perform system updates, update the Docker daemon, or scale down the cluster
// size. A container instance can't be changed to DRAINING until it has reached an
// ACTIVE status. If the instance is in any other status, an error will be
// received. When you set a container instance to DRAINING, Amazon ECS prevents new
// tasks from being scheduled for placement on the container instance and
// replacement service tasks are started on other container instances in the
// cluster if the resources are available. Service tasks on the container instance
// that are in the PENDING state are stopped immediately. Service tasks on the
// container instance that are in the RUNNING state are stopped and replaced
// according to the service's deployment configuration parameters,
// minimumHealthyPercent and maximumPercent. You can change the deployment
// configuration of your service using UpdateService.
//
// * If minimumHealthyPercent
// is below 100%, the scheduler can ignore desiredCount temporarily during task
// replacement. For example, desiredCount is four tasks, a minimum of 50% allows
// the scheduler to stop two existing tasks before starting two new tasks. If the
// minimum is 100%, the service scheduler can't remove existing tasks until the
// replacement tasks are considered healthy. Tasks for services that do not use a
// load balancer are considered healthy if they're in the RUNNING state. Tasks for
// services that use a load balancer are considered healthy if they're in the
// RUNNING state and are reported as healthy by the load balancer.
//
// * The
// maximumPercent parameter represents an upper limit on the number of running
// tasks during task replacement. You can use this to define the replacement batch
// size. For example, if desiredCount is four tasks, a maximum of 200% starts four
// new tasks before stopping the four tasks to be drained, provided that the
// cluster resources required to do this are available. If the maximum is 100%,
// then replacement tasks can't start until the draining tasks have stopped.
//
// Any
// PENDING or RUNNING tasks that do not belong to a service aren't affected. You
// must wait for them to finish or stop them manually. A container instance has
// completed draining when it has no more RUNNING tasks. You can verify this using
// ListTasks. When a container instance has been drained, you can set a container
// instance to ACTIVE status and once it has reached that status the Amazon ECS
// scheduler can begin scheduling tasks on the instance again.
func (c *Client) UpdateContainerInstancesState(ctx context.Context, params *UpdateContainerInstancesStateInput, optFns ...func(*Options)) (*UpdateContainerInstancesStateOutput, error) {
	if params == nil {
		params = &UpdateContainerInstancesStateInput{}
	}

	result, metadata, err := c.invokeOperation(ctx, "UpdateContainerInstancesState", params, optFns, c.addOperationUpdateContainerInstancesStateMiddlewares)
	if err != nil {
		return nil, err
	}

	out := result.(*UpdateContainerInstancesStateOutput)
	out.ResultMetadata = metadata
	return out, nil
}

type UpdateContainerInstancesStateInput struct {

	// A list of up to 10 container instance IDs or full ARN entries.
	//
	// This member is required.
	ContainerInstances []string

	// The container instance state to update the container instance with. The only
	// valid values for this action are ACTIVE and DRAINING. A container instance can
	// only be updated to DRAINING status once it has reached an ACTIVE state. If a
	// container instance is in REGISTERING, DEREGISTERING, or REGISTRATION_FAILED
	// state you can describe the container instance but can't update the container
	// instance state.
	//
	// This member is required.
	Status types.ContainerInstanceStatus

	// The short name or full Amazon Resource Name (ARN) of the cluster that hosts the
	// container instance to update. If you do not specify a cluster, the default
	// cluster is assumed.
	Cluster *string

	noSmithyDocumentSerde
}

type UpdateContainerInstancesStateOutput struct {

	// The list of container instances.
	ContainerInstances []types.ContainerInstance

	// Any failures associated with the call.
	Failures []types.Failure

	// Metadata pertaining to the operation's result.
	ResultMetadata middleware.Metadata

	noSmithyDocumentSerde
}

func (c *Client) addOperationUpdateContainerInstancesStateMiddlewares(stack *middleware.Stack, options Options) (err error) {
	err = stack.Serialize.Add(&awsAwsjson11_serializeOpUpdateContainerInstancesState{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsAwsjson11_deserializeOpUpdateContainerInstancesState{}, middleware.After)
	if err != nil {
		return err
	}
	if err = addSetLoggerMiddleware(stack, options); err != nil {
		return err
	}
	if err = awsmiddleware.AddClientRequestIDMiddleware(stack); err != nil {
		return err
	}
	if err = smithyhttp.AddComputeContentLengthMiddleware(stack); err != nil {
		return err
	}
	if err = addResolveEndpointMiddleware(stack, options); err != nil {
		return err
	}
	if err = v4.AddComputePayloadSHA256Middleware(stack); err != nil {
		return err
	}
	if err = addRetryMiddlewares(stack, options); err != nil {
		return err
	}
	if err = addHTTPSignerV4Middleware(stack, options); err != nil {
		return err
	}
	if err = awsmiddleware.AddRawResponseToMetadata(stack); err != nil {
		return err
	}
	if err = awsmiddleware.AddRecordResponseTiming(stack); err != nil {
		return err
	}
	if err = addClientUserAgent(stack); err != nil {
		return err
	}
	if err = smithyhttp.AddErrorCloseResponseBodyMiddleware(stack); err != nil {
		return err
	}
	if err = smithyhttp.AddCloseResponseBodyMiddleware(stack); err != nil {
		return err
	}
	if err = addOpUpdateContainerInstancesStateValidationMiddleware(stack); err != nil {
		return err
	}
	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opUpdateContainerInstancesState(options.Region), middleware.Before); err != nil {
		return err
	}
	if err = addRequestIDRetrieverMiddleware(stack); err != nil {
		return err
	}
	if err = addResponseErrorMiddleware(stack); err != nil {
		return err
	}
	if err = addRequestResponseLogging(stack, options); err != nil {
		return err
	}
	return nil
}

func newServiceMetadataMiddleware_opUpdateContainerInstancesState(region string) *awsmiddleware.RegisterServiceMetadata {
	return &awsmiddleware.RegisterServiceMetadata{
		Region:        region,
		ServiceID:     ServiceID,
		SigningName:   "ecs",
		OperationName: "UpdateContainerInstancesState",
	}
}
