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


package ecs

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

// 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.
//
// [UpdateService]: https://docs.aws.amazon.com/AmazonECS/latest/APIReference/API_UpdateService.html
// [ListTasks]: https://docs.aws.amazon.com/AmazonECS/latest/APIReference/API_ListTasks.html
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) {
	if err := stack.Serialize.Add(&setOperationInputMiddleware{}, middleware.After); err != nil {
	    return err
	}
	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 := addProtocolFinalizerMiddlewares(stack, options, "UpdateContainerInstancesState"); err != nil {
	    return fmt.Errorf("add protocol finalizers: %v", err)
	}
	
	if err = addlegacyEndpointContextSetter(stack, options); err != nil {
	return err
	}
	if err = addSetLoggerMiddleware(stack, options); err != nil {
	return err
	}
	if err = addClientRequestID(stack); err != nil {
	return err
	}
	if err = addComputeContentLength(stack); err != nil {
	return err
	}
	if err = addResolveEndpointMiddleware(stack, options); err != nil {
	return err
	}
	if err = addComputePayloadSHA256(stack); err != nil {
	return err
	}
	if err = addRetry(stack, options); err != nil {
	return err
	}
	if err = addRawResponseToMetadata(stack); err != nil {
	return err
	}
	if err = addRecordResponseTiming(stack); err != nil {
	return err
	}
	if err = addSpanRetryLoop(stack, options); err != nil {
	return err
	}
	if err = addClientUserAgent(stack, options); err != nil {
	return err
	}
	if err = smithyhttp.AddErrorCloseResponseBodyMiddleware(stack); err != nil {
	return err
	}
	if err = smithyhttp.AddCloseResponseBodyMiddleware(stack); err != nil {
	return err
	}
	if err = addSetLegacyContextSigningOptionsMiddleware(stack); err != nil {
	return err
	}
	if err = addTimeOffsetBuild(stack, c); err != nil {
	return err
	}
	if err = addUserAgentRetryMode(stack, options); 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 = addRecursionDetection(stack); 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
	}
	if err = addDisableHTTPSMiddleware(stack, options); err != nil {
	return err
	}
	if err = addSpanInitializeStart(stack); err != nil {
	return err
	}
	if err = addSpanInitializeEnd(stack); err != nil {
	return err
	}
	if err = addSpanBuildRequestStart(stack); err != nil {
	return err
	}
	if err = addSpanBuildRequestEnd(stack); err != nil {
	return err
	}
	return nil
}

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