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

package kms

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"
)

// Gets a key policy attached to the specified KMS key. Cross-account use: No. You
// cannot perform this operation on a KMS key in a different Amazon Web Services
// account. Required permissions: kms:GetKeyPolicy (https://docs.aws.amazon.com/kms/latest/developerguide/kms-api-permissions-reference.html)
// (key policy) Related operations: PutKeyPolicy
func (c *Client) GetKeyPolicy(ctx context.Context, params *GetKeyPolicyInput, optFns ...func(*Options)) (*GetKeyPolicyOutput, error) {
	if params == nil {
		params = &GetKeyPolicyInput{}
	}

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

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

type GetKeyPolicyInput struct {

	// Gets the key policy for the specified KMS key. Specify the key ID or key ARN of
	// the KMS key. For example:
	//   - Key ID: 1234abcd-12ab-34cd-56ef-1234567890ab
	//   - Key ARN:
	//   arn:aws:kms:us-east-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab
	// To get the key ID and key ARN for a KMS key, use ListKeys or DescribeKey .
	//
	// This member is required.
	KeyId *string

	// Specifies the name of the key policy. The only valid name is default . To get
	// the names of key policies, use ListKeyPolicies .
	//
	// This member is required.
	PolicyName *string

	noSmithyDocumentSerde
}

type GetKeyPolicyOutput struct {

	// A key policy document in JSON format.
	Policy *string

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

	noSmithyDocumentSerde
}

func (c *Client) addOperationGetKeyPolicyMiddlewares(stack *middleware.Stack, options Options) (err error) {
	err = stack.Serialize.Add(&awsAwsjson11_serializeOpGetKeyPolicy{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsAwsjson11_deserializeOpGetKeyPolicy{}, 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 = addOpGetKeyPolicyValidationMiddleware(stack); err != nil {
		return err
	}
	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opGetKeyPolicy(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_opGetKeyPolicy(region string) *awsmiddleware.RegisterServiceMetadata {
	return &awsmiddleware.RegisterServiceMetadata{
		Region:        region,
		ServiceID:     ServiceID,
		SigningName:   "kms",
		OperationName: "GetKeyPolicy",
	}
}