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

package ec2

import (
	"context"
	"fmt"
	awsmiddleware "github.com/aws/aws-sdk-go-v2/aws/middleware"
	"github.com/aws/aws-sdk-go-v2/service/ec2/types"
	"github.com/aws/smithy-go/middleware"
	smithyhttp "github.com/aws/smithy-go/transport/http"
)

// Modifies the specified Spot Fleet request.
//
// You can only modify a Spot Fleet request of type maintain .
//
// While the Spot Fleet request is being modified, it is in the modifying state.
//
// To scale up your Spot Fleet, increase its target capacity. The Spot Fleet
// launches the additional Spot Instances according to the allocation strategy for
// the Spot Fleet request. If the allocation strategy is lowestPrice , the Spot
// Fleet launches instances using the Spot Instance pool with the lowest price. If
// the allocation strategy is diversified , the Spot Fleet distributes the
// instances across the Spot Instance pools. If the allocation strategy is
// capacityOptimized , Spot Fleet launches instances from Spot Instance pools with
// optimal capacity for the number of instances that are launching.
//
// To scale down your Spot Fleet, decrease its target capacity. First, the Spot
// Fleet cancels any open requests that exceed the new target capacity. You can
// request that the Spot Fleet terminate Spot Instances until the size of the fleet
// no longer exceeds the new target capacity. If the allocation strategy is
// lowestPrice , the Spot Fleet terminates the instances with the highest price per
// unit. If the allocation strategy is capacityOptimized , the Spot Fleet
// terminates the instances in the Spot Instance pools that have the least
// available Spot Instance capacity. If the allocation strategy is diversified ,
// the Spot Fleet terminates instances across the Spot Instance pools.
// Alternatively, you can request that the Spot Fleet keep the fleet at its current
// size, but not replace any Spot Instances that are interrupted or that you
// terminate manually.
//
// If you are finished with your Spot Fleet for now, but will use it again later,
// you can set the target capacity to 0.
func (c *Client) ModifySpotFleetRequest(ctx context.Context, params *ModifySpotFleetRequestInput, optFns ...func(*Options)) (*ModifySpotFleetRequestOutput, error) {
	if params == nil {
		params = &ModifySpotFleetRequestInput{}
	}

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

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

// Contains the parameters for ModifySpotFleetRequest.
type ModifySpotFleetRequestInput struct {

	// The ID of the Spot Fleet request.
	//
	// This member is required.
	SpotFleetRequestId *string

	// Reserved.
	Context *string

	// Indicates whether running instances should be terminated if the target capacity
	// of the Spot Fleet request is decreased below the current size of the Spot Fleet.
	//
	// Supported only for fleets of type maintain .
	ExcessCapacityTerminationPolicy types.ExcessCapacityTerminationPolicy

	// The launch template and overrides. You can only use this parameter if you
	// specified a launch template ( LaunchTemplateConfigs ) in your Spot Fleet
	// request. If you specified LaunchSpecifications in your Spot Fleet request, then
	// omit this parameter.
	LaunchTemplateConfigs []types.LaunchTemplateConfig

	// The number of On-Demand Instances in the fleet.
	OnDemandTargetCapacity *int32

	// The size of the fleet.
	TargetCapacity *int32

	noSmithyDocumentSerde
}

// Contains the output of ModifySpotFleetRequest.
type ModifySpotFleetRequestOutput struct {

	// If the request succeeds, the response returns true . If the request fails, no
	// response is returned, and instead an error message is returned.
	Return *bool

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

	noSmithyDocumentSerde
}

func (c *Client) addOperationModifySpotFleetRequestMiddlewares(stack *middleware.Stack, options Options) (err error) {
	if err := stack.Serialize.Add(&setOperationInputMiddleware{}, middleware.After); err != nil {
		return err
	}
	err = stack.Serialize.Add(&awsEc2query_serializeOpModifySpotFleetRequest{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsEc2query_deserializeOpModifySpotFleetRequest{}, middleware.After)
	if err != nil {
		return err
	}
	if err := addProtocolFinalizerMiddlewares(stack, options, "ModifySpotFleetRequest"); 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, c); 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 = addUserAgentRetryMode(stack, options); err != nil {
		return err
	}
	if err = addCredentialSource(stack, options); err != nil {
		return err
	}
	if err = addOpModifySpotFleetRequestValidationMiddleware(stack); err != nil {
		return err
	}
	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opModifySpotFleetRequest(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 = addInterceptBeforeRetryLoop(stack, options); err != nil {
		return err
	}
	if err = addInterceptAttempt(stack, options); err != nil {
		return err
	}
	if err = addInterceptors(stack, options); err != nil {
		return err
	}
	return nil
}

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