Struct aws_sdk_s3::operation::head_object::builders::HeadObjectFluentBuilder

pub struct HeadObjectFluentBuilder { /* private fields */ }

Fluent builder constructing a request to HeadObject.

The HEAD action retrieves metadata from an object without returning the object itself. This action is useful if you're only interested in an object's metadata. To use HEAD, you must have READ access to the object.

A HEAD request has the same options as a GET action on an object. The response is identical to the GET response except that there is no response body. Because of this, if the HEAD request generates an error, it returns a generic 400 Bad Request, 403 Forbidden or 404 Not Found code. It is not possible to retrieve the exact exception beyond these error codes.

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 retrieve the metadata from 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).

• Encryption request headers, like x-amz-server-side-encryption, should not be sent for GET requests if your object uses server-side encryption with Key Management Service (KMS) keys (SSE-KMS), dual-layer server-side encryption with Amazon Web Services KMS keys (DSSE-KMS), or server-side encryption with Amazon S3 managed encryption keys (SSE-S3). If your object does use these types of keys, you’ll get an HTTP 400 Bad Request error.

• The last modified property in this case is the creation date of the object.

Request headers are limited to 8 KB in size. For more information, see Common Request Headers.

Consider the following when using request headers:

• Consideration 1 – 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 Amazon S3 returns 200 OK and the data requested.

• Consideration 2 – 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 Amazon S3 returns the 304 Not Modified response code.

For more information about conditional requests, see RFC 7232.

Permissions

You need the relevant read object (or version) permission for this operation. For more information, see Actions, resources, and condition keys for Amazon S3. If the object 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 error.

• If you don’t have the s3:ListBucket permission, Amazon S3 returns an HTTP status code 403 error.

The following actions are related to HeadObject:

• GetObject

• GetObjectAttributes

Implementations

impl HeadObjectFluentBuilder

pub fn as_input(&self) -> &HeadObjectInputBuilder

Access the HeadObject as a reference.

pub async fn send( self ) -> Result<HeadObjectOutput, SdkError<HeadObjectError, HttpResponse>>

Sends the request and returns the response.

If an error occurs, an SdkError will be returned with additional details that can be matched against.

By default, any retryable failures will be retried twice. Retry behavior is configurable with the RetryConfig, which can be set when configuring the client.

pub fn customize( self ) -> CustomizableOperation<HeadObjectOutput, HeadObjectError, Self>

Consumes this builder, creating a customizable operation that can be modified before being sent.

pub async fn presigned( self, presigning_config: PresigningConfig ) -> Result<PresignedRequest, SdkError<HeadObjectError, HttpResponse>>

Creates a presigned request for this operation.

The presigning_config provides additional presigning-specific config values, such as the amount of time the request should be valid for after creation.

Presigned requests can be given to other users or applications to access a resource or perform an operation without having access to the AWS security credentials.

Important: If you’re using credentials that can expire, such as those from STS AssumeRole or SSO, then the presigned request can only be valid for as long as the credentials used to create it are.

pub fn bucket(self, input: impl Into<String>) -> Self

The name of the bucket containing the object.

When using this action with an access point, 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 in the Amazon S3 User Guide.

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? in the Amazon S3 User Guide.

pub fn set_bucket(self, input: Option<String>) -> Self

The name of the bucket containing the object.

When using this action with an access point, 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 in the Amazon S3 User Guide.

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? in the Amazon S3 User Guide.

pub fn get_bucket(&self) -> &Option<String>

The name of the bucket containing the object.

When using this action with an access point, 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 in the Amazon S3 User Guide.

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? in the Amazon S3 User Guide.

pub fn if_match(self, input: impl Into<String>) -> Self

Return the object only if its entity tag (ETag) is the same as the one specified; otherwise, return a 412 (precondition failed) error.

pub fn set_if_match(self, input: Option<String>) -> Self

Return the object only if its entity tag (ETag) is the same as the one specified; otherwise, return a 412 (precondition failed) error.

pub fn get_if_match(&self) -> &Option<String>

Return the object only if its entity tag (ETag) is the same as the one specified; otherwise, return a 412 (precondition failed) error.

pub fn if_modified_since(self, input: DateTime) -> Self

Return the object only if it has been modified since the specified time; otherwise, return a 304 (not modified) error.

pub fn set_if_modified_since(self, input: Option<DateTime>) -> Self

Return the object only if it has been modified since the specified time; otherwise, return a 304 (not modified) error.

pub fn get_if_modified_since(&self) -> &Option<DateTime>

Return the object only if it has been modified since the specified time; otherwise, return a 304 (not modified) error.

pub fn if_none_match(self, input: impl Into<String>) -> Self

Return the object only if its entity tag (ETag) is different from the one specified; otherwise, return a 304 (not modified) error.

pub fn set_if_none_match(self, input: Option<String>) -> Self

Return the object only if its entity tag (ETag) is different from the one specified; otherwise, return a 304 (not modified) error.

pub fn get_if_none_match(&self) -> &Option<String>

Return the object only if its entity tag (ETag) is different from the one specified; otherwise, return a 304 (not modified) error.

pub fn if_unmodified_since(self, input: DateTime) -> Self

Return the object only if it has not been modified since the specified time; otherwise, return a 412 (precondition failed) error.

pub fn set_if_unmodified_since(self, input: Option<DateTime>) -> Self

Return the object only if it has not been modified since the specified time; otherwise, return a 412 (precondition failed) error.

pub fn get_if_unmodified_since(&self) -> &Option<DateTime>

Return the object only if it has not been modified since the specified time; otherwise, return a 412 (precondition failed) error.

pub fn key(self, input: impl Into<String>) -> Self

The object key.

pub fn set_key(self, input: Option<String>) -> Self

The object key.

pub fn get_key(&self) -> &Option<String>

The object key.

pub fn range(self, input: impl Into<String>) -> Self

HeadObject returns only the metadata for an object. If the Range is satisfiable, only the ContentLength is affected in the response. If the Range is not satisfiable, S3 returns a 416 - Requested Range Not Satisfiable error.

pub fn set_range(self, input: Option<String>) -> Self

HeadObject returns only the metadata for an object. If the Range is satisfiable, only the ContentLength is affected in the response. If the Range is not satisfiable, S3 returns a 416 - Requested Range Not Satisfiable error.

pub fn get_range(&self) -> &Option<String>

HeadObject returns only the metadata for an object. If the Range is satisfiable, only the ContentLength is affected in the response. If the Range is not satisfiable, S3 returns a 416 - Requested Range Not Satisfiable error.

pub fn version_id(self, input: impl Into<String>) -> Self

VersionId used to reference a specific version of the object.

pub fn set_version_id(self, input: Option<String>) -> Self

VersionId used to reference a specific version of the object.

pub fn get_version_id(&self) -> &Option<String>

VersionId used to reference a specific version of the object.

pub fn sse_customer_algorithm(self, input: impl Into<String>) -> Self

Specifies the algorithm to use to when encrypting the object (for example, AES256).

pub fn set_sse_customer_algorithm(self, input: Option<String>) -> Self

Specifies the algorithm to use to when encrypting the object (for example, AES256).

pub fn get_sse_customer_algorithm(&self) -> &Option<String>

Specifies the algorithm to use to when encrypting the object (for example, AES256).

pub fn sse_customer_key(self, input: impl Into<String>) -> Self

Specifies the customer-provided encryption key for Amazon S3 to use in encrypting data. This value is used to store the object and then it is discarded; Amazon S3 does not store the encryption key. The key must be appropriate for use with the algorithm specified in the x-amz-server-side-encryption-customer-algorithm header.

pub fn set_sse_customer_key(self, input: Option<String>) -> Self

Specifies the customer-provided encryption key for Amazon S3 to use in encrypting data. This value is used to store the object and then it is discarded; Amazon S3 does not store the encryption key. The key must be appropriate for use with the algorithm specified in the x-amz-server-side-encryption-customer-algorithm header.

pub fn get_sse_customer_key(&self) -> &Option<String>

Specifies the customer-provided encryption key for Amazon S3 to use in encrypting data. This value is used to store the object and then it is discarded; Amazon S3 does not store the encryption key. The key must be appropriate for use with the algorithm specified in the x-amz-server-side-encryption-customer-algorithm header.

pub fn sse_customer_key_md5(self, input: impl Into<String>) -> Self

Specifies the 128-bit MD5 digest of the 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.

pub fn set_sse_customer_key_md5(self, input: Option<String>) -> Self

Specifies the 128-bit MD5 digest of the 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.

pub fn get_sse_customer_key_md5(&self) -> &Option<String>

Specifies the 128-bit MD5 digest of the 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.

pub fn request_payer(self, input: RequestPayer) -> Self

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 Amazon 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 in the Amazon S3 User Guide.

pub fn set_request_payer(self, input: Option<RequestPayer>) -> Self

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 Amazon 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 in the Amazon S3 User Guide.

pub fn get_request_payer(&self) -> &Option<RequestPayer>

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 Amazon 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 in the Amazon S3 User Guide.

pub fn part_number(self, input: i32) -> Self

Part number of the object being read. This is a positive integer between 1 and 10,000. Effectively performs a 'ranged' HEAD request for the part specified. Useful querying about the size of the part and the number of parts in this object.

pub fn set_part_number(self, input: Option<i32>) -> Self

Part number of the object being read. This is a positive integer between 1 and 10,000. Effectively performs a 'ranged' HEAD request for the part specified. Useful querying about the size of the part and the number of parts in this object.

pub fn get_part_number(&self) -> &Option<i32>

Part number of the object being read. This is a positive integer between 1 and 10,000. Effectively performs a 'ranged' HEAD request for the part specified. Useful querying about the size of the part and the number of parts in this object.

pub fn expected_bucket_owner(self, input: impl Into<String>) -> Self

The account ID of the expected bucket owner. If the bucket is owned by a different account, the request fails with the HTTP status code 403 Forbidden (access denied).

pub fn set_expected_bucket_owner(self, input: Option<String>) -> Self

The account ID of the expected bucket owner. If the bucket is owned by a different account, the request fails with the HTTP status code 403 Forbidden (access denied).

pub fn get_expected_bucket_owner(&self) -> &Option<String>

The account ID of the expected bucket owner. If the bucket is owned by a different account, the request fails with the HTTP status code 403 Forbidden (access denied).

pub fn checksum_mode(self, input: ChecksumMode) -> Self

To retrieve the checksum, this parameter must be enabled.

In addition, if you enable ChecksumMode and the object is encrypted with Amazon Web Services Key Management Service (Amazon Web Services KMS), you must have permission to use the kms:Decrypt action for the request to succeed.

pub fn set_checksum_mode(self, input: Option<ChecksumMode>) -> Self

To retrieve the checksum, this parameter must be enabled.

In addition, if you enable ChecksumMode and the object is encrypted with Amazon Web Services Key Management Service (Amazon Web Services KMS), you must have permission to use the kms:Decrypt action for the request to succeed.

pub fn get_checksum_mode(&self) -> &Option<ChecksumMode>

To retrieve the checksum, this parameter must be enabled.

In addition, if you enable ChecksumMode and the object is encrypted with Amazon Web Services Key Management Service (Amazon Web Services KMS), you must have permission to use the kms:Decrypt action for the request to succeed.

Trait Implementations

impl Clone for HeadObjectFluentBuilder

fn clone(&self) -> HeadObjectFluentBuilder

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for HeadObjectFluentBuilder

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.