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

package s3

import (
	"context"
	"fmt"
	awsmiddleware "github.com/aws/aws-sdk-go-v2/aws/middleware"
	"github.com/aws/aws-sdk-go-v2/aws/signer/v4"
	internalChecksum "github.com/aws/aws-sdk-go-v2/service/internal/checksum"
	s3cust "github.com/aws/aws-sdk-go-v2/service/s3/internal/customizations"
	"github.com/aws/aws-sdk-go-v2/service/s3/types"
	"github.com/aws/smithy-go/middleware"
	smithyhttp "github.com/aws/smithy-go/transport/http"
	"io"
	"time"
)

// Retrieves an object from Amazon S3. In the GetObject request, specify the full
// key name for the object. General purpose buckets - Both the virtual-hosted-style
// requests and the path-style requests are supported. For a virtual hosted-style
// request example, if you have the object photos/2006/February/sample.jpg ,
// specify the object key name as /photos/2006/February/sample.jpg . For a
// path-style request example, if you have the object
// photos/2006/February/sample.jpg in the bucket named examplebucket , specify the
// object key name as /examplebucket/photos/2006/February/sample.jpg . For more
// information about request types, see HTTP Host Header Bucket Specification (https://docs.aws.amazon.com/AmazonS3/latest/dev/VirtualHosting.html#VirtualHostingSpecifyBucket)
// in the Amazon S3 User Guide. Directory buckets - Only virtual-hosted-style
// requests are supported. For a virtual hosted-style request example, if you have
// the object photos/2006/February/sample.jpg in the bucket named
// examplebucket--use1-az5--x-s3 , specify the object key name as
// /photos/2006/February/sample.jpg . Also, when you make requests to this API
// operation, your requests are sent to the Zonal endpoint. These endpoints support
// virtual-hosted-style requests in the format
// https://bucket_name.s3express-az_id.region.amazonaws.com/key-name . Path-style
// requests are not supported. For more information, see Regional and Zonal
// endpoints (https://docs.aws.amazon.com/AmazonS3/latest/userguide/s3-express-Regions-and-Zones.html)
// in the Amazon S3 User Guide. Permissions
//   - General purpose bucket permissions - You must have the required permissions
//     in a policy. To use GetObject , you must have the READ access to the object
//     (or version). If you grant READ access to the anonymous user, the GetObject
//     operation returns the object without using an authorization header. For more
//     information, see Specifying permissions in a policy (https://docs.aws.amazon.com/AmazonS3/latest/dev/using-with-s3-actions.html)
//     in the Amazon S3 User Guide. If you include a versionId in your request
//     header, you must have the s3:GetObjectVersion permission to access a specific
//     version of an object. The s3:GetObject permission is not required in this
//     scenario. If you request the current version of an object without a specific
//     versionId in the request header, only the s3:GetObject permission is required.
//     The s3:GetObjectVersion permission is not required in this scenario. If the
//     object that you request doesn’t exist, the error that Amazon S3 returns depends
//     on whether you also have the s3:ListBucket permission.
//   - If you have the s3:ListBucket permission on the bucket, Amazon S3 returns an
//     HTTP status code 404 Not Found error.
//   - If you don’t have the s3:ListBucket permission, Amazon S3 returns an HTTP
//     status code 403 Access Denied error.
//   - Directory bucket permissions - To grant access to this API operation on a
//     directory bucket, we recommend that you use the CreateSession (https://docs.aws.amazon.com/AmazonS3/latest/API/API_CreateSession.html)
//     API operation for session-based authorization. Specifically, you grant the
//     s3express:CreateSession permission to the directory bucket in a bucket policy
//     or an IAM identity-based policy. Then, you make the CreateSession API call on
//     the bucket to obtain a session token. With the session token in your request
//     header, you can make API requests to this operation. After the session token
//     expires, you make another CreateSession API call to generate a new session
//     token for use. Amazon Web Services CLI or SDKs create session and refresh the
//     session token automatically to avoid service interruptions when a session
//     expires. For more information about authorization, see CreateSession (https://docs.aws.amazon.com/AmazonS3/latest/API/API_CreateSession.html)
//     .
//
// Storage classes If the object you are retrieving is stored in the S3 Glacier
// Flexible Retrieval storage class, the S3 Glacier Deep Archive storage class, the
// S3 Intelligent-Tiering Archive Access tier, or the S3 Intelligent-Tiering Deep
// Archive Access tier, before you can retrieve the object you must first restore a
// copy using RestoreObject (https://docs.aws.amazon.com/AmazonS3/latest/API/API_RestoreObject.html)
// . Otherwise, this operation returns an InvalidObjectState error. For
// information about restoring archived objects, see Restoring Archived Objects (https://docs.aws.amazon.com/AmazonS3/latest/dev/restoring-objects.html)
// in the Amazon S3 User Guide. Directory buckets - For directory buckets, only the
// S3 Express One Zone storage class is supported to store newly created objects.
// Unsupported storage class values won't write a destination object and will
// respond with the HTTP status code 400 Bad Request . Encryption Encryption
// request headers, like x-amz-server-side-encryption , should not be sent for the
// GetObject requests, if your object uses server-side encryption with Amazon S3
// managed encryption keys (SSE-S3), server-side encryption with Key Management
// Service (KMS) keys (SSE-KMS), or dual-layer server-side encryption with Amazon
// Web Services KMS keys (DSSE-KMS). If you include the header in your GetObject
// requests for the object that uses these types of keys, you’ll get an HTTP 400
// Bad Request error. Overriding response header values through the request There
// are times when you want to override certain response header values of a
// GetObject response. For example, you might override the Content-Disposition
// response header value through your GetObject request. You can override values
// for a set of response headers. These modified response header values are
// included only in a successful response, that is, when the HTTP status code 200
// OK is returned. The headers you can override using the following query
// parameters in the request are a subset of the headers that Amazon S3 accepts
// when you create an object. The response headers that you can override for the
// GetObject response are Cache-Control , Content-Disposition , Content-Encoding ,
// Content-Language , Content-Type , and Expires . To override values for a set of
// response headers in the GetObject response, you can use the following query
// parameters in the request.
//   - response-cache-control
//   - response-content-disposition
//   - response-content-encoding
//   - response-content-language
//   - response-content-type
//   - response-expires
//
// When you use these parameters, you must sign the request by using either an
// Authorization header or a presigned URL. These parameters cannot be used with an
// unsigned (anonymous) request. HTTP Host header syntax Directory buckets - The
// HTTP Host header syntax is Bucket_name.s3express-az_id.region.amazonaws.com .
// The following operations are related to GetObject :
//   - ListBuckets (https://docs.aws.amazon.com/AmazonS3/latest/API/API_ListBuckets.html)
//   - GetObjectAcl (https://docs.aws.amazon.com/AmazonS3/latest/API/API_GetObjectAcl.html)
func (c *Client) GetObject(ctx context.Context, params *GetObjectInput, optFns ...func(*Options)) (*GetObjectOutput, error) {
	if params == nil {
		params = &GetObjectInput{}
	}

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

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

type GetObjectInput struct {

	// The bucket name containing the object. Directory buckets - When you use this
	// operation with a directory bucket, you must use virtual-hosted-style requests in
	// the format Bucket_name.s3express-az_id.region.amazonaws.com . Path-style
	// requests are not supported. Directory bucket names must be unique in the chosen
	// Availability Zone. Bucket names must follow the format
	// bucket_base_name--az-id--x-s3 (for example,  DOC-EXAMPLE-BUCKET--usw2-az2--x-s3
	// ). For information about bucket naming restrictions, see Directory bucket
	// naming rules (https://docs.aws.amazon.com/AmazonS3/latest/userguide/directory-bucket-naming-rules.html)
	// in the Amazon S3 User Guide. Access points - When you use this action with an
	// access point, you must provide the alias of the access point in place of the
	// bucket name or specify the access point ARN. When using the access point ARN,
	// you must direct requests to the access point hostname. The access point hostname
	// takes the form AccessPointName-AccountId.s3-accesspoint.Region.amazonaws.com.
	// When using this action with an access point through the Amazon Web Services
	// SDKs, you provide the access point ARN in place of the bucket name. For more
	// information about access point ARNs, see Using access points (https://docs.aws.amazon.com/AmazonS3/latest/userguide/using-access-points.html)
	// in the Amazon S3 User Guide. Object Lambda access points - When you use this
	// action with an Object Lambda access point, you must direct requests to the
	// Object Lambda access point hostname. The Object Lambda access point hostname
	// takes the form AccessPointName-AccountId.s3-object-lambda.Region.amazonaws.com.
	// Access points and Object Lambda access points are not supported by directory
	// buckets. S3 on Outposts - When you use this action with Amazon S3 on Outposts,
	// you must direct requests to the S3 on Outposts hostname. The S3 on Outposts
	// hostname takes the form
	// AccessPointName-AccountId.outpostID.s3-outposts.Region.amazonaws.com . When you
	// use this action with S3 on Outposts through the Amazon Web Services SDKs, you
	// provide the Outposts access point ARN in place of the bucket name. For more
	// information about S3 on Outposts ARNs, see What is S3 on Outposts? (https://docs.aws.amazon.com/AmazonS3/latest/userguide/S3onOutposts.html)
	// in the Amazon S3 User Guide.
	//
	// This member is required.
	Bucket *string

	// Key of the object to get.
	//
	// This member is required.
	Key *string

	// To retrieve the checksum, this mode must be enabled.
	ChecksumMode types.ChecksumMode

	// The account ID of the expected bucket owner. If the account ID that you provide
	// does not match the actual owner of the bucket, the request fails with the HTTP
	// status code 403 Forbidden (access denied).
	ExpectedBucketOwner *string

	// Return the object only if its entity tag (ETag) is the same as the one
	// specified in this header; otherwise, return a 412 Precondition Failed error. If
	// both of the If-Match and If-Unmodified-Since headers are present in the request
	// as follows: If-Match condition evaluates to true , and; If-Unmodified-Since
	// condition evaluates to false ; then, S3 returns 200 OK and the data requested.
	// For more information about conditional requests, see RFC 7232 (https://tools.ietf.org/html/rfc7232)
	// .
	IfMatch *string

	// Return the object only if it has been modified since the specified time;
	// otherwise, return a 304 Not Modified error. If both of the If-None-Match and
	// If-Modified-Since headers are present in the request as follows: If-None-Match
	// condition evaluates to false , and; If-Modified-Since condition evaluates to
	// true ; then, S3 returns 304 Not Modified status code. For more information
	// about conditional requests, see RFC 7232 (https://tools.ietf.org/html/rfc7232) .
	IfModifiedSince *time.Time

	// Return the object only if its entity tag (ETag) is different from the one
	// specified in this header; otherwise, return a 304 Not Modified error. If both
	// of the If-None-Match and If-Modified-Since headers are present in the request
	// as follows: If-None-Match condition evaluates to false , and; If-Modified-Since
	// condition evaluates to true ; then, S3 returns 304 Not Modified HTTP status
	// code. For more information about conditional requests, see RFC 7232 (https://tools.ietf.org/html/rfc7232)
	// .
	IfNoneMatch *string

	// Return the object only if it has not been modified since the specified time;
	// otherwise, return a 412 Precondition Failed error. If both of the If-Match and
	// If-Unmodified-Since headers are present in the request as follows: If-Match
	// condition evaluates to true , and; If-Unmodified-Since condition evaluates to
	// false ; then, S3 returns 200 OK and the data requested. For more information
	// about conditional requests, see RFC 7232 (https://tools.ietf.org/html/rfc7232) .
	IfUnmodifiedSince *time.Time

	// Part number of the object being read. This is a positive integer between 1 and
	// 10,000. Effectively performs a 'ranged' GET request for the part specified.
	// Useful for downloading just a part of an object.
	PartNumber *int32

	// Downloads the specified byte range of an object. For more information about the
	// HTTP Range header, see https://www.rfc-editor.org/rfc/rfc9110.html#name-range (https://www.rfc-editor.org/rfc/rfc9110.html#name-range)
	// . Amazon S3 doesn't support retrieving multiple ranges of data per GET request.
	Range *string

	// Confirms that the requester knows that they will be charged for the request.
	// Bucket owners need not specify this parameter in their requests. If either the
	// source or destination S3 bucket has Requester Pays enabled, the requester will
	// pay for corresponding charges to copy the object. For information about
	// downloading objects from Requester Pays buckets, see Downloading Objects in
	// Requester Pays Buckets (https://docs.aws.amazon.com/AmazonS3/latest/dev/ObjectsinRequesterPaysBuckets.html)
	// in the Amazon S3 User Guide. This functionality is not supported for directory
	// buckets.
	RequestPayer types.RequestPayer

	// Sets the Cache-Control header of the response.
	ResponseCacheControl *string

	// Sets the Content-Disposition header of the response.
	ResponseContentDisposition *string

	// Sets the Content-Encoding header of the response.
	ResponseContentEncoding *string

	// Sets the Content-Language header of the response.
	ResponseContentLanguage *string

	// Sets the Content-Type header of the response.
	ResponseContentType *string

	// Sets the Expires header of the response.
	ResponseExpires *time.Time

	// Specifies the algorithm to use when decrypting the object (for example, AES256
	// ). If you encrypt an object by using server-side encryption with
	// customer-provided encryption keys (SSE-C) when you store the object in Amazon
	// S3, then when you GET the object, you must use the following headers:
	//   - x-amz-server-side-encryption-customer-algorithm
	//   - x-amz-server-side-encryption-customer-key
	//   - x-amz-server-side-encryption-customer-key-MD5
	// For more information about SSE-C, see Server-Side Encryption (Using
	// Customer-Provided Encryption Keys) (https://docs.aws.amazon.com/AmazonS3/latest/dev/ServerSideEncryptionCustomerKeys.html)
	// in the Amazon S3 User Guide. This functionality is not supported for directory
	// buckets.
	SSECustomerAlgorithm *string

	// Specifies the customer-provided encryption key that you originally provided for
	// Amazon S3 to encrypt the data before storing it. This value is used to decrypt
	// the object when recovering it and must match the one used when storing the data.
	// The key must be appropriate for use with the algorithm specified in the
	// x-amz-server-side-encryption-customer-algorithm header. If you encrypt an object
	// by using server-side encryption with customer-provided encryption keys (SSE-C)
	// when you store the object in Amazon S3, then when you GET the object, you must
	// use the following headers:
	//   - x-amz-server-side-encryption-customer-algorithm
	//   - x-amz-server-side-encryption-customer-key
	//   - x-amz-server-side-encryption-customer-key-MD5
	// For more information about SSE-C, see Server-Side Encryption (Using
	// Customer-Provided Encryption Keys) (https://docs.aws.amazon.com/AmazonS3/latest/dev/ServerSideEncryptionCustomerKeys.html)
	// in the Amazon S3 User Guide. This functionality is not supported for directory
	// buckets.
	SSECustomerKey *string

	// Specifies the 128-bit MD5 digest of the customer-provided encryption key
	// according to RFC 1321. Amazon S3 uses this header for a message integrity check
	// to ensure that the encryption key was transmitted without error. If you encrypt
	// an object by using server-side encryption with customer-provided encryption keys
	// (SSE-C) when you store the object in Amazon S3, then when you GET the object,
	// you must use the following headers:
	//   - x-amz-server-side-encryption-customer-algorithm
	//   - x-amz-server-side-encryption-customer-key
	//   - x-amz-server-side-encryption-customer-key-MD5
	// For more information about SSE-C, see Server-Side Encryption (Using
	// Customer-Provided Encryption Keys) (https://docs.aws.amazon.com/AmazonS3/latest/dev/ServerSideEncryptionCustomerKeys.html)
	// in the Amazon S3 User Guide. This functionality is not supported for directory
	// buckets.
	SSECustomerKeyMD5 *string

	// Version ID used to reference a specific version of the object. By default, the
	// GetObject operation returns the current version of an object. To return a
	// different version, use the versionId subresource.
	//   - If you include a versionId in your request header, you must have the
	//   s3:GetObjectVersion permission to access a specific version of an object. The
	//   s3:GetObject permission is not required in this scenario.
	//   - If you request the current version of an object without a specific versionId
	//   in the request header, only the s3:GetObject permission is required. The
	//   s3:GetObjectVersion permission is not required in this scenario.
	//   - Directory buckets - S3 Versioning isn't enabled and supported for directory
	//   buckets. For this API operation, only the null value of the version ID is
	//   supported by directory buckets. You can only specify null to the versionId
	//   query parameter in the request.
	// For more information about versioning, see PutBucketVersioning (https://docs.aws.amazon.com/AmazonS3/latest/API/API_PutBucketVersioning.html)
	// .
	VersionId *string

	noSmithyDocumentSerde
}

func (in *GetObjectInput) bindEndpointParams(p *EndpointParameters) {
	p.Bucket = in.Bucket
	p.Key = in.Key

}

type GetObjectOutput struct {

	// Indicates that a range of bytes was specified in the request.
	AcceptRanges *string

	// Object data.
	Body io.ReadCloser

	// Indicates whether the object uses an S3 Bucket Key for server-side encryption
	// with Key Management Service (KMS) keys (SSE-KMS). This functionality is not
	// supported for directory buckets.
	BucketKeyEnabled *bool

	// Specifies caching behavior along the request/reply chain.
	CacheControl *string

	// The base64-encoded, 32-bit CRC32 checksum of the object. This will only be
	// present if it was uploaded with the object. For more information, see Checking
	// object integrity (https://docs.aws.amazon.com/AmazonS3/latest/userguide/checking-object-integrity.html)
	// in the Amazon S3 User Guide.
	ChecksumCRC32 *string

	// The base64-encoded, 32-bit CRC32C checksum of the object. This will only be
	// present if it was uploaded with the object. For more information, see Checking
	// object integrity (https://docs.aws.amazon.com/AmazonS3/latest/userguide/checking-object-integrity.html)
	// in the Amazon S3 User Guide.
	ChecksumCRC32C *string

	// The base64-encoded, 160-bit SHA-1 digest of the object. This will only be
	// present if it was uploaded with the object. For more information, see Checking
	// object integrity (https://docs.aws.amazon.com/AmazonS3/latest/userguide/checking-object-integrity.html)
	// in the Amazon S3 User Guide.
	ChecksumSHA1 *string

	// The base64-encoded, 256-bit SHA-256 digest of the object. This will only be
	// present if it was uploaded with the object. For more information, see Checking
	// object integrity (https://docs.aws.amazon.com/AmazonS3/latest/userguide/checking-object-integrity.html)
	// in the Amazon S3 User Guide.
	ChecksumSHA256 *string

	// Specifies presentational information for the object.
	ContentDisposition *string

	// Indicates what content encodings have been applied to the object and thus what
	// decoding mechanisms must be applied to obtain the media-type referenced by the
	// Content-Type header field.
	ContentEncoding *string

	// The language the content is in.
	ContentLanguage *string

	// Size of the body in bytes.
	ContentLength *int64

	// The portion of the object returned in the response.
	ContentRange *string

	// A standard MIME type describing the format of the object data.
	ContentType *string

	// Indicates whether the object retrieved was (true) or was not (false) a Delete
	// Marker. If false, this response header does not appear in the response.
	//   - If the current version of the object is a delete marker, Amazon S3 behaves
	//   as if the object was deleted and includes x-amz-delete-marker: true in the
	//   response.
	//   - If the specified version in the request is a delete marker, the response
	//   returns a 405 Method Not Allowed error and the Last-Modified: timestamp
	//   response header.
	DeleteMarker *bool

	// An entity tag (ETag) is an opaque identifier assigned by a web server to a
	// specific version of a resource found at a URL.
	ETag *string

	// If the object expiration is configured (see PutBucketLifecycleConfiguration (https://docs.aws.amazon.com/AmazonS3/latest/API/API_PutBucketLifecycleConfiguration.html)
	// ), the response includes this header. It includes the expiry-date and rule-id
	// key-value pairs providing object expiration information. The value of the
	// rule-id is URL-encoded. This functionality is not supported for directory
	// buckets.
	Expiration *string

	// The date and time at which the object is no longer cacheable.
	Expires *time.Time

	// Date and time when the object was last modified. General purpose buckets - When
	// you specify a versionId of the object in your request, if the specified version
	// in the request is a delete marker, the response returns a 405 Method Not Allowed
	// error and the Last-Modified: timestamp response header.
	LastModified *time.Time

	// A map of metadata to store with the object in S3.
	//
	// Map keys will be normalized to lower-case.
	Metadata map[string]string

	// This is set to the number of metadata entries not returned in the headers that
	// are prefixed with x-amz-meta- . This can happen if you create metadata using an
	// API like SOAP that supports more flexible metadata than the REST API. For
	// example, using SOAP, you can create metadata whose values are not legal HTTP
	// headers. This functionality is not supported for directory buckets.
	MissingMeta *int32

	// Indicates whether this object has an active legal hold. This field is only
	// returned if you have permission to view an object's legal hold status. This
	// functionality is not supported for directory buckets.
	ObjectLockLegalHoldStatus types.ObjectLockLegalHoldStatus

	// The Object Lock mode that's currently in place for this object. This
	// functionality is not supported for directory buckets.
	ObjectLockMode types.ObjectLockMode

	// The date and time when this object's Object Lock will expire. This
	// functionality is not supported for directory buckets.
	ObjectLockRetainUntilDate *time.Time

	// The count of parts this object has. This value is only returned if you specify
	// partNumber in your request and the object was uploaded as a multipart upload.
	PartsCount *int32

	// Amazon S3 can return this if your request involves a bucket that is either a
	// source or destination in a replication rule. This functionality is not supported
	// for directory buckets.
	ReplicationStatus types.ReplicationStatus

	// If present, indicates that the requester was successfully charged for the
	// request. This functionality is not supported for directory buckets.
	RequestCharged types.RequestCharged

	// Provides information about object restoration action and expiration time of the
	// restored object copy. This functionality is not supported for directory buckets.
	// Only the S3 Express One Zone storage class is supported by directory buckets to
	// store objects.
	Restore *string

	// If server-side encryption with a customer-provided encryption key was
	// requested, the response will include this header to confirm the encryption
	// algorithm that's used. This functionality is not supported for directory
	// buckets.
	SSECustomerAlgorithm *string

	// If server-side encryption with a customer-provided encryption key was
	// requested, the response will include this header to provide the round-trip
	// message integrity verification of the customer-provided encryption key. This
	// functionality is not supported for directory buckets.
	SSECustomerKeyMD5 *string

	// If present, indicates the ID of the Key Management Service (KMS) symmetric
	// encryption customer managed key that was used for the object. This functionality
	// is not supported for directory buckets.
	SSEKMSKeyId *string

	// The server-side encryption algorithm used when you store this object in Amazon
	// S3 (for example, AES256 , aws:kms , aws:kms:dsse ). For directory buckets, only
	// server-side encryption with Amazon S3 managed keys (SSE-S3) ( AES256 ) is
	// supported.
	ServerSideEncryption types.ServerSideEncryption

	// Provides storage class information of the object. Amazon S3 returns this header
	// for all objects except for S3 Standard storage class objects. Directory buckets
	// - Only the S3 Express One Zone storage class is supported by directory buckets
	// to store objects.
	StorageClass types.StorageClass

	// The number of tags, if any, on the object, when you have the relevant
	// permission to read object tags. You can use GetObjectTagging (https://docs.aws.amazon.com/AmazonS3/latest/API/API_GetObjectTagging.html)
	// to retrieve the tag set associated with an object. This functionality is not
	// supported for directory buckets.
	TagCount *int32

	// Version ID of the object. This functionality is not supported for directory
	// buckets.
	VersionId *string

	// If the bucket is configured as a website, redirects requests for this object to
	// another object in the same bucket or to an external URL. Amazon S3 stores the
	// value of this header in the object metadata. This functionality is not supported
	// for directory buckets.
	WebsiteRedirectLocation *string

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

	noSmithyDocumentSerde
}

func (c *Client) addOperationGetObjectMiddlewares(stack *middleware.Stack, options Options) (err error) {
	if err := stack.Serialize.Add(&setOperationInputMiddleware{}, middleware.After); err != nil {
		return err
	}
	err = stack.Serialize.Add(&awsRestxml_serializeOpGetObject{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsRestxml_deserializeOpGetObject{}, middleware.After)
	if err != nil {
		return err
	}
	if err := addProtocolFinalizerMiddlewares(stack, options, "GetObject"); 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 = 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 = 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 = addSetLegacyContextSigningOptionsMiddleware(stack); err != nil {
		return err
	}
	if err = addPutBucketContextMiddleware(stack); err != nil {
		return err
	}
	if err = addOpGetObjectValidationMiddleware(stack); err != nil {
		return err
	}
	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opGetObject(options.Region), middleware.Before); err != nil {
		return err
	}
	if err = addMetadataRetrieverMiddleware(stack); err != nil {
		return err
	}
	if err = awsmiddleware.AddRecursionDetection(stack); err != nil {
		return err
	}
	if err = addGetObjectOutputChecksumMiddlewares(stack, options); err != nil {
		return err
	}
	if err = addGetObjectUpdateEndpoint(stack, options); err != nil {
		return err
	}
	if err = addResponseErrorMiddleware(stack); err != nil {
		return err
	}
	if err = v4.AddContentSHA256HeaderMiddleware(stack); err != nil {
		return err
	}
	if err = disableAcceptEncodingGzip(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 = addSerializeImmutableHostnameBucketMiddleware(stack, options); err != nil {
		return err
	}
	return nil
}

func (v *GetObjectInput) bucket() (string, bool) {
	if v.Bucket == nil {
		return "", false
	}
	return *v.Bucket, true
}

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

// getGetObjectRequestValidationModeMember gets the request checksum validation
// mode provided as input.
func getGetObjectRequestValidationModeMember(input interface{}) (string, bool) {
	in := input.(*GetObjectInput)
	if len(in.ChecksumMode) == 0 {
		return "", false
	}
	return string(in.ChecksumMode), true
}

func addGetObjectOutputChecksumMiddlewares(stack *middleware.Stack, options Options) error {
	return internalChecksum.AddOutputMiddleware(stack, internalChecksum.OutputMiddlewareOptions{
		GetValidationMode:             getGetObjectRequestValidationModeMember,
		ValidationAlgorithms:          []string{"CRC32", "CRC32C", "SHA256", "SHA1"},
		IgnoreMultipartValidation:     true,
		LogValidationSkipped:          true,
		LogMultipartValidationSkipped: true,
	})
}

// getGetObjectBucketMember returns a pointer to string denoting a provided bucket
// member valueand a boolean indicating if the input has a modeled bucket name,
func getGetObjectBucketMember(input interface{}) (*string, bool) {
	in := input.(*GetObjectInput)
	if in.Bucket == nil {
		return nil, false
	}
	return in.Bucket, true
}
func addGetObjectUpdateEndpoint(stack *middleware.Stack, options Options) error {
	return s3cust.UpdateEndpoint(stack, s3cust.UpdateEndpointOptions{
		Accessor: s3cust.UpdateEndpointParameterAccessor{
			GetBucketFromInput: getGetObjectBucketMember,
		},
		UsePathStyle:                   options.UsePathStyle,
		UseAccelerate:                  options.UseAccelerate,
		SupportsAccelerate:             true,
		TargetS3ObjectLambda:           false,
		EndpointResolver:               options.EndpointResolver,
		EndpointResolverOptions:        options.EndpointOptions,
		UseARNRegion:                   options.UseARNRegion,
		DisableMultiRegionAccessPoints: options.DisableMultiRegionAccessPoints,
	})
}

// PresignGetObject is used to generate a presigned HTTP Request which contains
// presigned URL, signed headers and HTTP method used.
func (c *PresignClient) PresignGetObject(ctx context.Context, params *GetObjectInput, optFns ...func(*PresignOptions)) (*v4.PresignedHTTPRequest, error) {
	if params == nil {
		params = &GetObjectInput{}
	}
	options := c.options.copy()
	for _, fn := range optFns {
		fn(&options)
	}
	clientOptFns := append(options.ClientOptions, withNopHTTPClientAPIOption)

	result, _, err := c.client.invokeOperation(ctx, "GetObject", params, clientOptFns,
		c.client.addOperationGetObjectMiddlewares,
		presignConverter(options).convertToPresignMiddleware,
		addGetObjectPayloadAsUnsigned,
	)
	if err != nil {
		return nil, err
	}

	out := result.(*v4.PresignedHTTPRequest)
	return out, nil
}

func addGetObjectPayloadAsUnsigned(stack *middleware.Stack, options Options) error {
	v4.RemoveContentSHA256HeaderMiddleware(stack)
	v4.RemoveComputePayloadSHA256Middleware(stack)
	return v4.AddUnsignedPayloadMiddleware(stack)
}