NAME

Amazon::S3::Bucket - A container class for a S3 bucket and its contents.

SYNOPSIS

  use Amazon::S3;
  
  # creates bucket object (no "bucket exists" check)
  my $bucket = $s3->bucket("foo"); 
  
  # create resource with meta data (attributes)
  my $keyname = 'testing.txt';
  my $value   = 'T';
  $bucket->add_key(
      $keyname, $value,
      {   content_type        => 'text/plain',
          'x-amz-meta-colour' => 'orange',
      }
  );
  
  # list keys in the bucket
  $response = $bucket->list
      or die $s3->err . ": " . $s3->errstr;
  print $response->{bucket}."\n";
  for my $key (@{ $response->{keys} }) {
        print "\t".$key->{key}."\n";  
  }

  # check if resource exists.
  print "$keyname exists\n" if $bucket->head_key($keyname);

  # delete key from bucket
  $bucket->delete_key($keyname);
 

METHODS

new

Instaniates a new bucket object.

Requires a hash containing two arguments:

bucket

The name (identifier) of the bucket.

account

The S3::Amazon object (representing the S3 account) this bucket is associated with.

NOTE: This method does not check if a bucket actually exists. It simply instaniates the bucket.

Typically a developer will not call this method directly, but work through the interface in S3::Amazon that will handle their creation.

add_key

Takes three positional parameters:

key

A string identifier for the resource in this bucket

value

A SCALAR string representing the contents of the resource.

configuration

A HASHREF of configuration data for this key. The configuration is generally the HTTP headers you want to pass the S3 service. The client library will add all necessary headers. Adding them to the configuration hash will override what the library would send and add headers that are not typically required for S3 interactions.

In addition to additional and overriden HTTP headers, this HASHREF can have a acl_short key to set the permissions (access) of the resource without a seperate call via add_acl or in the form of an XML document. See the documentation in add_acl for the values and usage.

Returns a boolean indicating its success. Check err and errstr for error message if this operation fails.

add_key_filename

The method works like add_key except the value is assumed to be a filename on the local file system. The file will be streamed rather then loaded into memory in one big chunk.

head_key $key_name

Returns a configuration HASH of the given key. If a key does not exist in the bucket undef will be returned.

get_key $key_name, [$method]

Takes a key and an optional HTTP method and fetches it from S3. The default HTTP method is GET.

The method returns undef if the key does not exist in the bucket and throws an exception (dies) on server errors.

On success, the method returns a HASHREF containing:

content_type

etag

value

@meta

get_key_filename $key_name, $method, $filename

This method works like get_key, but takes an added filename that the S3 resource will be written to.

delete_key $key_name

Permanently removes $key_name from the bucket. Returns a boolean value indicating the operations success.

delete_bucket

Permanently removes the bucket from the server. A bucket cannot be removed if it contains any keys (contents).

This is an alias for $s3-delete_bucket($bucket)>.

list

List all keys in this bucket.

See "list_bucket" in Amazon::S3 for documentation of this method.

list_all

List all keys in this bucket without having to worry about 'marker'. This may make multiple requests to S3 under the hood.

See "list_bucket_all" in Amazon::S3 for documentation of this method.

get_acl

Retrieves the Access Control List (ACL) for the bucket or resource as an XML document.

key

The key of the stored resource to fetch. This parameter is optional. By default the method returns the ACL for the bucket itself.

set_acl $conf

Retrieves the Access Control List (ACL) for the bucket or resource. Requires a HASHREF argument with one of the following keys:

acl_xml

An XML string which contains access control information which matches Amazon's published schema.

acl_short

Alternative shorthand notation for common types of ACLs that can be used in place of a ACL XML document.

According to the Amazon S3 API documentation the following recognized acl_short types are defined as follows:

private

Owner gets FULL_CONTROL. No one else has any access rights. This is the default.

public-read

Owner gets FULL_CONTROL and the anonymous principal is granted READ access. If this policy is used on an object, it can be read from a browser with no authentication.

public-read-write

Owner gets FULL_CONTROL, the anonymous principal is granted READ and WRITE access. This is a useful policy to apply to a bucket, if you intend for any anonymous user to PUT objects into the bucket.

authenticated-read

Owner gets FULL_CONTROL, and any principal authenticated as a registered Amazon S3 user is granted READ access.

key

The key name to apply the permissions. If the key is not provided the bucket ACL will be set.

Returns a boolean indicating the operations success.

get_location_constraint

Returns the location constraint data on a bucket.

For more information on location constraints, refer to the Amazon S3 Developer Guide.

err

The S3 error code for the last error the account encountered.

errstr

A human readable error string for the last error the account encountered.

SEE ALSO

Amazon::S3

AUTHOR & COPYRIGHT

Please see the Amazon::S3 manpage for author, copyright, and license information.

cpanm Amazon::S3

perl -MCPAN -e shell
install Amazon::S3