Class: Aws::S3::Types::HeadObjectRequest

Inherits:

Struct

• Object
• Struct
• Aws::S3::Types::HeadObjectRequest

Includes:

Aws::Structure

Defined in:

lib/aws-sdk-s3/types.rb

Overview

Note:

When making an API call, you may pass HeadObjectRequest data as a hash:

{
  bucket: "BucketName", # required
  if_match: "IfMatch",
  if_modified_since: Time.now,
  if_none_match: "IfNoneMatch",
  if_unmodified_since: Time.now,
  key: "ObjectKey", # required
  range: "Range",
  version_id: "ObjectVersionId",
  sse_customer_algorithm: "SSECustomerAlgorithm",
  sse_customer_key: "SSECustomerKey",
  sse_customer_key_md5: "SSECustomerKeyMD5",
  request_payer: "requester", # accepts requester
  part_number: 1,
  expected_bucket_owner: "AccountId",
  checksum_mode: "ENABLED", # accepts ENABLED
}

See Also:

• AWS API Documentation

Constant Summary

SENSITIVE =

[:sse_customer_key]

Instance Attribute Summary

• #bucket ⇒ String

  The name of the bucket containing the object.

• #checksum_mode ⇒ String

  To retrieve the checksum, this parameter must be enabled.

• #expected_bucket_owner ⇒ String

  The account ID of the expected bucket owner.

• #if_match ⇒ String

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

• #if_modified_since ⇒ Time

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

• #if_none_match ⇒ String

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

• #if_unmodified_since ⇒ Time

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

• #key ⇒ String

  The object key.

• #part_number ⇒ Integer

  Part number of the object being read.

• #range ⇒ String

  Because ‘HeadObject` returns only the metadata for an object, this parameter has no effect.

• #request_payer ⇒ String

  Confirms that the requester knows that they will be charged for the request.

• #sse_customer_algorithm ⇒ String

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

• #sse_customer_key ⇒ String

  Specifies the customer-provided encryption key for Amazon S3 to use in encrypting data.

• #sse_customer_key_md5 ⇒ String

  Specifies the 128-bit MD5 digest of the encryption key according to RFC 1321.

• #version_id ⇒ String

  VersionId used to reference a specific version of the object.

Instance Attribute Details

#bucket ⇒ 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][1

in the *Amazon S3 User Guide*.

When using 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 using this action with S3 on Outposts through the Amazon Web Services SDKs, you provide the Outposts bucket ARN in place of the bucket name. For more information about S3 on Outposts ARNs, see

Using Amazon S3 on Outposts][2

in the *Amazon S3 User Guide*.

[1]: docs.aws.amazon.com/AmazonS3/latest/userguide/using-access-points.html [2]: docs.aws.amazon.com/AmazonS3/latest/userguide/S3onOutposts.html

Returns:

• (String)

# File 'lib/aws-sdk-s3/types.rb', line 7479

class HeadObjectRequest < Struct.new(
  :bucket,
  :if_match,
  :if_modified_since,
  :if_none_match,
  :if_unmodified_since,
  :key,
  :range,
  :version_id,
  :sse_customer_algorithm,
  :sse_customer_key,
  :sse_customer_key_md5,
  :request_payer,
  :part_number,
  :expected_bucket_owner,
  :checksum_mode)
  SENSITIVE = [:sse_customer_key]
  include Aws::Structure
end

#checksum_mode ⇒ String

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.

Returns:

• (String)

# File 'lib/aws-sdk-s3/types.rb', line 7479

class HeadObjectRequest < Struct.new(
  :bucket,
  :if_match,
  :if_modified_since,
  :if_none_match,
  :if_unmodified_since,
  :key,
  :range,
  :version_id,
  :sse_customer_algorithm,
  :sse_customer_key,
  :sse_customer_key_md5,
  :request_payer,
  :part_number,
  :expected_bucket_owner,
  :checksum_mode)
  SENSITIVE = [:sse_customer_key]
  include Aws::Structure
end

#expected_bucket_owner ⇒ 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).

Returns:

• (String)

# File 'lib/aws-sdk-s3/types.rb', line 7479

class HeadObjectRequest < Struct.new(
  :bucket,
  :if_match,
  :if_modified_since,
  :if_none_match,
  :if_unmodified_since,
  :key,
  :range,
  :version_id,
  :sse_customer_algorithm,
  :sse_customer_key,
  :sse_customer_key_md5,
  :request_payer,
  :part_number,
  :expected_bucket_owner,
  :checksum_mode)
  SENSITIVE = [:sse_customer_key]
  include Aws::Structure
end

#if_match ⇒ String

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

Returns:

• (String)

# File 'lib/aws-sdk-s3/types.rb', line 7479

class HeadObjectRequest < Struct.new(
  :bucket,
  :if_match,
  :if_modified_since,
  :if_none_match,
  :if_unmodified_since,
  :key,
  :range,
  :version_id,
  :sse_customer_algorithm,
  :sse_customer_key,
  :sse_customer_key_md5,
  :request_payer,
  :part_number,
  :expected_bucket_owner,
  :checksum_mode)
  SENSITIVE = [:sse_customer_key]
  include Aws::Structure
end

#if_modified_since ⇒ Time

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

Returns:

• (Time)

# File 'lib/aws-sdk-s3/types.rb', line 7479

class HeadObjectRequest < Struct.new(
  :bucket,
  :if_match,
  :if_modified_since,
  :if_none_match,
  :if_unmodified_since,
  :key,
  :range,
  :version_id,
  :sse_customer_algorithm,
  :sse_customer_key,
  :sse_customer_key_md5,
  :request_payer,
  :part_number,
  :expected_bucket_owner,
  :checksum_mode)
  SENSITIVE = [:sse_customer_key]
  include Aws::Structure
end

#if_none_match ⇒ String

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

Returns:

• (String)

# File 'lib/aws-sdk-s3/types.rb', line 7479

class HeadObjectRequest < Struct.new(
  :bucket,
  :if_match,
  :if_modified_since,
  :if_none_match,
  :if_unmodified_since,
  :key,
  :range,
  :version_id,
  :sse_customer_algorithm,
  :sse_customer_key,
  :sse_customer_key_md5,
  :request_payer,
  :part_number,
  :expected_bucket_owner,
  :checksum_mode)
  SENSITIVE = [:sse_customer_key]
  include Aws::Structure
end

#if_unmodified_since ⇒ Time

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

Returns:

• (Time)

# File 'lib/aws-sdk-s3/types.rb', line 7479

class HeadObjectRequest < Struct.new(
  :bucket,
  :if_match,
  :if_modified_since,
  :if_none_match,
  :if_unmodified_since,
  :key,
  :range,
  :version_id,
  :sse_customer_algorithm,
  :sse_customer_key,
  :sse_customer_key_md5,
  :request_payer,
  :part_number,
  :expected_bucket_owner,
  :checksum_mode)
  SENSITIVE = [:sse_customer_key]
  include Aws::Structure
end

#key ⇒ String

The object key.

Returns:

• (String)

# File 'lib/aws-sdk-s3/types.rb', line 7479

class HeadObjectRequest < Struct.new(
  :bucket,
  :if_match,
  :if_modified_since,
  :if_none_match,
  :if_unmodified_since,
  :key,
  :range,
  :version_id,
  :sse_customer_algorithm,
  :sse_customer_key,
  :sse_customer_key_md5,
  :request_payer,
  :part_number,
  :expected_bucket_owner,
  :checksum_mode)
  SENSITIVE = [:sse_customer_key]
  include Aws::Structure
end

#part_number ⇒ Integer

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.

Returns:

• (Integer)

# File 'lib/aws-sdk-s3/types.rb', line 7479

class HeadObjectRequest < Struct.new(
  :bucket,
  :if_match,
  :if_modified_since,
  :if_none_match,
  :if_unmodified_since,
  :key,
  :range,
  :version_id,
  :sse_customer_algorithm,
  :sse_customer_key,
  :sse_customer_key_md5,
  :request_payer,
  :part_number,
  :expected_bucket_owner,
  :checksum_mode)
  SENSITIVE = [:sse_customer_key]
  include Aws::Structure
end

#range ⇒ String

Because ‘HeadObject` returns only the metadata for an object, this parameter has no effect.

Returns:

• (String)

# File 'lib/aws-sdk-s3/types.rb', line 7479

class HeadObjectRequest < Struct.new(
  :bucket,
  :if_match,
  :if_modified_since,
  :if_none_match,
  :if_unmodified_since,
  :key,
  :range,
  :version_id,
  :sse_customer_algorithm,
  :sse_customer_key,
  :sse_customer_key_md5,
  :request_payer,
  :part_number,
  :expected_bucket_owner,
  :checksum_mode)
  SENSITIVE = [:sse_customer_key]
  include Aws::Structure
end

#request_payer ⇒ String

Confirms that the requester knows that they will be charged for the request. Bucket owners need not specify this parameter in their requests. For information about downloading objects from Requester Pays buckets, see [Downloading Objects in Requester Pays Buckets] in the *Amazon S3 User Guide*.

[1]: docs.aws.amazon.com/AmazonS3/latest/dev/ObjectsinRequesterPaysBuckets.html

Returns:

• (String)

# File 'lib/aws-sdk-s3/types.rb', line 7479

class HeadObjectRequest < Struct.new(
  :bucket,
  :if_match,
  :if_modified_since,
  :if_none_match,
  :if_unmodified_since,
  :key,
  :range,
  :version_id,
  :sse_customer_algorithm,
  :sse_customer_key,
  :sse_customer_key_md5,
  :request_payer,
  :part_number,
  :expected_bucket_owner,
  :checksum_mode)
  SENSITIVE = [:sse_customer_key]
  include Aws::Structure
end

#sse_customer_algorithm ⇒ String

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

Returns:

• (String)

# File 'lib/aws-sdk-s3/types.rb', line 7479

class HeadObjectRequest < Struct.new(
  :bucket,
  :if_match,
  :if_modified_since,
  :if_none_match,
  :if_unmodified_since,
  :key,
  :range,
  :version_id,
  :sse_customer_algorithm,
  :sse_customer_key,
  :sse_customer_key_md5,
  :request_payer,
  :part_number,
  :expected_bucket_owner,
  :checksum_mode)
  SENSITIVE = [:sse_customer_key]
  include Aws::Structure
end

#sse_customer_key ⇒ 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.

Returns:

• (String)

# File 'lib/aws-sdk-s3/types.rb', line 7479

class HeadObjectRequest < Struct.new(
  :bucket,
  :if_match,
  :if_modified_since,
  :if_none_match,
  :if_unmodified_since,
  :key,
  :range,
  :version_id,
  :sse_customer_algorithm,
  :sse_customer_key,
  :sse_customer_key_md5,
  :request_payer,
  :part_number,
  :expected_bucket_owner,
  :checksum_mode)
  SENSITIVE = [:sse_customer_key]
  include Aws::Structure
end

#sse_customer_key_md5 ⇒ 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.

Returns:

• (String)

# File 'lib/aws-sdk-s3/types.rb', line 7479

class HeadObjectRequest < Struct.new(
  :bucket,
  :if_match,
  :if_modified_since,
  :if_none_match,
  :if_unmodified_since,
  :key,
  :range,
  :version_id,
  :sse_customer_algorithm,
  :sse_customer_key,
  :sse_customer_key_md5,
  :request_payer,
  :part_number,
  :expected_bucket_owner,
  :checksum_mode)
  SENSITIVE = [:sse_customer_key]
  include Aws::Structure
end

#version_id ⇒ String

VersionId used to reference a specific version of the object.

Returns:

• (String)

# File 'lib/aws-sdk-s3/types.rb', line 7479

class HeadObjectRequest < Struct.new(
  :bucket,
  :if_match,
  :if_modified_since,
  :if_none_match,
  :if_unmodified_since,
  :key,
  :range,
  :version_id,
  :sse_customer_algorithm,
  :sse_customer_key,
  :sse_customer_key_md5,
  :request_payer,
  :part_number,
  :expected_bucket_owner,
  :checksum_mode)
  SENSITIVE = [:sse_customer_key]
  include Aws::Structure
end