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

package kms

import (
	"context"
	"fmt"
	awsmiddleware "github.com/aws/aws-sdk-go-v2/aws/middleware"
	"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] (key policy)
//
// Related operations: [PutKeyPolicy]
//
// Eventual consistency: The KMS API follows an eventual consistency model. For
// more information, see [KMS eventual consistency].
//
// [kms:GetKeyPolicy]: https://docs.aws.amazon.com/kms/latest/developerguide/kms-api-permissions-reference.html
// [PutKeyPolicy]: https://docs.aws.amazon.com/kms/latest/APIReference/API_PutKeyPolicy.html
// [KMS eventual consistency]: https://docs.aws.amazon.com/kms/latest/developerguide/accessing-kms.html#programming-eventual-consistency
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. If no policy name is specified, the
	// default value is default . The only valid name is default . To get the names of
	// key policies, use ListKeyPolicies.
	PolicyName *string

	noSmithyDocumentSerde
}

type GetKeyPolicyOutput struct {

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

	// The name of the key policy. The only valid value is default .
	PolicyName *string

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

	noSmithyDocumentSerde
}

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