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

package lambda

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/smithy-go/middleware"
	smithyhttp "github.com/aws/smithy-go/transport/http"
)

// Sets the maximum number of simultaneous executions for a function, and reserves
// capacity for that concurrency level. Concurrency settings apply to the function
// as a whole, including all published versions and the unpublished version.
// Reserving concurrency both ensures that your function has capacity to process
// the specified number of events simultaneously, and prevents it from scaling
// beyond that level. Use GetFunction to see the current setting for a function.
// Use GetAccountSettings to see your Regional concurrency limit. You can reserve
// concurrency for as many functions as you like, as long as you leave at least 100
// simultaneous executions unreserved for functions that aren't configured with a
// per-function limit. For more information, see Lambda function scaling (https://docs.aws.amazon.com/lambda/latest/dg/invocation-scaling.html)
// .
func (c *Client) PutFunctionConcurrency(ctx context.Context, params *PutFunctionConcurrencyInput, optFns ...func(*Options)) (*PutFunctionConcurrencyOutput, error) {
	if params == nil {
		params = &PutFunctionConcurrencyInput{}
	}

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

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

type PutFunctionConcurrencyInput struct {

	// The name of the Lambda function. Name formats
	//   - Function name – my-function .
	//   - Function ARN – arn:aws:lambda:us-west-2:123456789012:function:my-function .
	//   - Partial ARN – 123456789012:function:my-function .
	// The length constraint applies only to the full ARN. If you specify only the
	// function name, it is limited to 64 characters in length.
	//
	// This member is required.
	FunctionName *string

	// The number of simultaneous executions to reserve for the function.
	//
	// This member is required.
	ReservedConcurrentExecutions *int32

	noSmithyDocumentSerde
}

type PutFunctionConcurrencyOutput struct {

	// The number of concurrent executions that are reserved for this function. For
	// more information, see Managing Lambda reserved concurrency (https://docs.aws.amazon.com/lambda/latest/dg/configuration-concurrency.html)
	// .
	ReservedConcurrentExecutions *int32

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

	noSmithyDocumentSerde
}

func (c *Client) addOperationPutFunctionConcurrencyMiddlewares(stack *middleware.Stack, options Options) (err error) {
	err = stack.Serialize.Add(&awsRestjson1_serializeOpPutFunctionConcurrency{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsRestjson1_deserializeOpPutFunctionConcurrency{}, 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, 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 = addOpPutFunctionConcurrencyValidationMiddleware(stack); err != nil {
		return err
	}
	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opPutFunctionConcurrency(options.Region), middleware.Before); err != nil {
		return err
	}
	if err = awsmiddleware.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
	}
	return nil
}

func newServiceMetadataMiddleware_opPutFunctionConcurrency(region string) *awsmiddleware.RegisterServiceMetadata {
	return &awsmiddleware.RegisterServiceMetadata{
		Region:        region,
		ServiceID:     ServiceID,
		SigningName:   "lambda",
		OperationName: "PutFunctionConcurrency",
	}
}