/usr/share/perl5/Net/Amazon/S3/Client/Object.pm is in libnet-amazon-s3-perl 0.80-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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$Net::Amazon::S3::Client::Object::VERSION = '0.80';
use Moose 0.85;
use MooseX::StrictConstructor 0.16;
use DateTime::Format::HTTP;
use Digest::MD5 qw(md5 md5_hex);
use Digest::MD5::File qw(file_md5 file_md5_hex);
use File::stat;
use MIME::Base64;
use Moose::Util::TypeConstraints;
use MooseX::Types::DateTime::MoreCoercions 0.07 qw( DateTime );
use IO::File 1.14;
# ABSTRACT: An easy-to-use Amazon S3 client object
enum 'AclShort' =>
[ qw(private public-read public-read-write authenticated-read) ];
enum 'StorageClass' =>
[ qw(standard reduced_redundancy) ];
has 'client' =>
( is => 'ro', isa => 'Net::Amazon::S3::Client', required => 1 );
has 'bucket' =>
( is => 'ro', isa => 'Net::Amazon::S3::Client::Bucket', required => 1 );
has 'key' => ( is => 'ro', isa => 'Str', required => 1 );
has 'etag' => ( is => 'ro', isa => 'Etag', required => 0 );
has 'size' => ( is => 'ro', isa => 'Int', required => 0 );
has 'last_modified' =>
( is => 'ro', isa => DateTime, coerce => 1, required => 0 );
has 'expires' => ( is => 'rw', isa => DateTime, coerce => 1, required => 0 );
has 'acl_short' =>
( is => 'ro', isa => 'AclShort', required => 0, default => 'private' );
has 'content_type' => (
is => 'ro',
isa => 'Str',
required => 0,
default => 'binary/octet-stream'
);
has 'content_disposition' => (
is => 'ro',
isa => 'Str',
required => 0,
);
has 'content_encoding' => (
is => 'ro',
isa => 'Str',
required => 0,
);
has 'cache_control' => (
is => 'ro',
isa => 'Str',
required => 0,
);
has 'storage_class' => (
is => 'ro',
isa => 'StorageClass',
required => 0,
default => 'standard',
);
has 'user_metadata' => (
is => 'ro',
isa => 'HashRef',
required => 0,
default => sub { {} },
);
has 'encryption' => (
is => 'ro',
isa => 'Maybe[Str]',
required => 0,
);
__PACKAGE__->meta->make_immutable;
sub exists {
my $self = shift;
my $http_request = Net::Amazon::S3::Request::GetObject->new(
s3 => $self->client->s3,
bucket => $self->bucket->name,
key => $self->key,
method => 'HEAD',
)->http_request;
my $http_response = $self->client->_send_request_raw($http_request);
return $http_response->code == 200 ? 1 : 0;
}
sub _get {
my $self = shift;
my $http_request = Net::Amazon::S3::Request::GetObject->new(
s3 => $self->client->s3,
bucket => $self->bucket->name,
key => $self->key,
method => 'GET',
)->http_request;
my $http_response = $self->client->_send_request($http_request);
my $content = $http_response->content;
$self->_load_user_metadata($http_response);
my $md5_hex = md5_hex($content);
my $etag = $self->etag || $self->_etag($http_response);
confess 'Corrupted download'
if( !$self->_is_multipart_etag($etag) && $etag ne $md5_hex);
return $http_response;
}
sub get {
my $self = shift;
return $self->_get->content;
}
sub get_decoded {
my $self = shift;
return $self->_get->decoded_content(@_);
}
sub get_callback {
my ( $self, $callback ) = @_;
my $http_request = Net::Amazon::S3::Request::GetObject->new(
s3 => $self->client->s3,
bucket => $self->bucket->name,
key => $self->key,
method => 'GET',
)->http_request;
my $http_response
= $self->client->_send_request( $http_request, $callback );
return $http_response;
}
sub get_filename {
my ( $self, $filename ) = @_;
my $http_request = Net::Amazon::S3::Request::GetObject->new(
s3 => $self->client->s3,
bucket => $self->bucket->name,
key => $self->key,
method => 'GET',
)->http_request;
my $http_response
= $self->client->_send_request( $http_request, $filename );
$self->_load_user_metadata($http_response);
my $md5_hex = file_md5_hex($filename);
my $etag = $self->etag || $self->_etag($http_response);
confess 'Corrupted download'
if( !$self->_is_multipart_etag($etag) && $etag ne $md5_hex);
}
sub _load_user_metadata {
my ( $self, $http_response ) = @_;
my %user_metadata;
for my $header_name ($http_response->header_field_names) {
my ($metadata_name) = lc($header_name) =~ /\A x-amz-meta- (.*) \z/xms
or next;
$user_metadata{$metadata_name} = $http_response->header($header_name);
}
%{ $self->user_metadata } = %user_metadata;
}
sub put {
my ( $self, $value ) = @_;
$self->_put( $value, length $value, md5_hex($value) );
}
sub _put {
my ( $self, $value, $size, $md5_hex ) = @_;
my $md5_base64 = encode_base64( pack( 'H*', $md5_hex ) );
chomp $md5_base64;
my $conf = {
'Content-MD5' => $md5_base64,
'Content-Length' => $size,
'Content-Type' => $self->content_type,
};
if ( $self->expires ) {
$conf->{Expires}
= DateTime::Format::HTTP->format_datetime( $self->expires );
}
if ( $self->content_encoding ) {
$conf->{'Content-Encoding'} = $self->content_encoding;
}
if ( $self->content_disposition ) {
$conf->{'Content-Disposition'} = $self->content_disposition;
}
if ( $self->cache_control ) {
$conf->{'Cache-Control'} = $self->cache_control;
}
if ( $self->storage_class && $self->storage_class ne 'standard' ) {
$conf->{'x-amz-storage-class'} = uc $self->storage_class;
}
$conf->{"x-amz-meta-\L$_"} = $self->user_metadata->{$_}
for keys %{ $self->user_metadata };
my $http_request = Net::Amazon::S3::Request::PutObject->new(
s3 => $self->client->s3,
bucket => $self->bucket->name,
key => $self->key,
value => $value,
headers => $conf,
acl_short => $self->acl_short,
encryption => $self->encryption,
)->http_request;
my $http_response = $self->client->_send_request($http_request);
confess 'Error uploading ' . $http_response->as_string
if $http_response->code != 200;
my $etag = $self->_etag($http_response);
confess 'Corrupted upload' if $etag ne $md5_hex;
}
sub put_filename {
my ( $self, $filename ) = @_;
my $md5_hex = $self->etag || file_md5_hex($filename);
my $size = $self->size;
unless ($size) {
my $stat = stat($filename) || confess("No $filename: $!");
$size = $stat->size;
}
$self->_put( $self->_content_sub($filename), $size, $md5_hex );
}
sub delete {
my $self = shift;
my $http_request = Net::Amazon::S3::Request::DeleteObject->new(
s3 => $self->client->s3,
bucket => $self->bucket->name,
key => $self->key,
)->http_request;
$self->client->_send_request($http_request);
}
sub initiate_multipart_upload {
my $self = shift;
my $http_request = Net::Amazon::S3::Request::InitiateMultipartUpload->new(
s3 => $self->client->s3,
bucket => $self->bucket->name,
key => $self->key,
encryption => $self->encryption,
)->http_request;
my $xpc = $self->client->_send_request_xpc($http_request);
my $upload_id = $xpc->findvalue('//s3:UploadId');
confess "Couldn't get upload id from initiate_multipart_upload response XML"
unless $upload_id;
return $upload_id;
}
sub complete_multipart_upload {
my $self = shift;
my %args = ref($_[0]) ? %{$_[0]} : @_;
#set default args
$args{s3} = $self->client->s3;
$args{key} = $self->key;
$args{bucket} = $self->bucket->name;
my $http_request =
Net::Amazon::S3::Request::CompleteMultipartUpload->new(%args)->http_request;
return $self->client->_send_request($http_request);
}
sub abort_multipart_upload {
my $self = shift;
my %args = ref($_[0]) ? %{$_[0]} : @_;
#set default args
$args{s3} = $self->client->s3;
$args{key} = $self->key;
$args{bucket} = $self->bucket->name;
my $http_request =
Net::Amazon::S3::Request::AbortMultipartUpload->new(%args)->http_request;
return $self->client->_send_request($http_request);
}
sub put_part {
my $self = shift;
my %args = ref($_[0]) ? %{$_[0]} : @_;
#set default args
$args{s3} = $self->client->s3;
$args{key} = $self->key;
$args{bucket} = $self->bucket->name;
#work out content length header
$args{headers}->{'Content-Length'} = length $args{value}
if(defined $args{value});
my $http_request =
Net::Amazon::S3::Request::PutPart->new(%args)->http_request;
return $self->client->_send_request($http_request);
}
sub list_parts {
confess "Not implemented";
# TODO - Net::Amazon::S3::Request:ListParts is implemented, but need to
# define better interface at this level. Currently returns raw XML.
}
sub uri {
my $self = shift;
return Net::Amazon::S3::Request::GetObject->new(
s3 => $self->client->s3,
bucket => $self->bucket->name,
key => $self->key,
method => 'GET',
)->http_request->uri;
}
sub query_string_authentication_uri {
my $self = shift;
return Net::Amazon::S3::Request::GetObject->new(
s3 => $self->client->s3,
bucket => $self->bucket->name,
key => $self->key,
method => 'GET',
)->query_string_authentication_uri( $self->expires->epoch );
}
sub _content_sub {
my $self = shift;
my $filename = shift;
my $stat = stat($filename);
my $remaining = $stat->size;
my $blksize = $stat->blksize || 4096;
confess "$filename not a readable file with fixed size"
unless -r $filename and ( -f _ || $remaining );
my $fh = IO::File->new( $filename, 'r' )
or confess "Could not open $filename: $!";
$fh->binmode;
return sub {
my $buffer;
# upon retries the file is closed and we must reopen it
unless ( $fh->opened ) {
$fh = IO::File->new( $filename, 'r' )
or confess "Could not open $filename: $!";
$fh->binmode;
$remaining = $stat->size;
}
# warn "read remaining $remaining";
unless ( my $read = $fh->read( $buffer, $blksize ) ) {
# warn "read $read buffer $buffer remaining $remaining";
confess
"Error while reading upload content $filename ($remaining remaining) $!"
if $! and $remaining;
# otherwise, we found EOF
$fh->close
or confess "close of upload content $filename failed: $!";
$buffer ||= ''
; # LWP expects an emptry string on finish, read returns 0
}
$remaining -= length($buffer);
return $buffer;
};
}
sub _etag {
my ( $self, $http_response ) = @_;
my $etag = $http_response->header('ETag');
if ($etag) {
$etag =~ s/^"//;
$etag =~ s/"$//;
}
return $etag;
}
sub _is_multipart_etag {
my ( $self, $etag ) = @_;
return 1 if($etag =~ /\-\d+$/);
}
1;
__END__
=pod
=encoding UTF-8
=head1 NAME
Net::Amazon::S3::Client::Object - An easy-to-use Amazon S3 client object
=head1 VERSION
version 0.80
=head1 SYNOPSIS
# show the key
print $object->key . "\n";
# show the etag of an existing object (if fetched by listing
# a bucket)
print $object->etag . "\n";
# show the size of an existing object (if fetched by listing
# a bucket)
print $object->size . "\n";
# to create a new object
my $object = $bucket->object( key => 'this is the key' );
$object->put('this is the value');
# to get the vaue of an object
my $value = $object->get;
# to see if an object exists
if ($object->exists) { ... }
# to delete an object
$object->delete;
# to create a new object which is publically-accessible with a
# content-type of text/plain which expires on 2010-01-02
my $object = $bucket->object(
key => 'this is the public key',
acl_short => 'public-read',
content_type => 'text/plain',
expires => '2010-01-02',
);
$object->put('this is the public value');
# return the URI of a publically-accessible object
my $uri = $object->uri;
# to store a new object with server-side encryption enabled
my $object = $bucket->object(
key => 'my secret',
encryption => 'AES256',
);
$object->put('this data will be stored using encryption.');
# upload a file
my $object = $bucket->object(
key => 'images/my_hat.jpg',
content_type => 'image/jpeg',
);
$object->put_filename('hat.jpg');
# upload a file if you already know its md5_hex and size
my $object = $bucket->object(
key => 'images/my_hat.jpg',
content_type => 'image/jpeg',
etag => $md5_hex,
size => $size,
);
$object->put_filename('hat.jpg');
# download the value of the object into a file
my $object = $bucket->object( key => 'images/my_hat.jpg' );
$object->get_filename('hat_backup.jpg');
# use query string authentication
my $object = $bucket->object(
key => 'images/my_hat.jpg',
expires => '2009-03-01',
);
my $uri = $object->query_string_authentication_uri();
=head1 DESCRIPTION
This module represents objects in buckets.
=for test_synopsis no strict 'vars'
=head1 METHODS
=head2 etag
# show the etag of an existing object (if fetched by listing
# a bucket)
print $object->etag . "\n";
=head2 delete
# to delete an object
$object->delete;
=head2 exists
# to see if an object exists
if ($object->exists) { ... }
=head2 get
# to get the vaue of an object
my $value = $object->get;
=head2 get_decoded
# get the value of an object, and decode any Content-Encoding and/or
# charset; see decoded_content in HTTP::Response
my $value = $object->get_decoded;
=head2 get_filename
# download the value of the object into a file
my $object = $bucket->object( key => 'images/my_hat.jpg' );
$object->get_filename('hat_backup.jpg');
=head2 key
# show the key
print $object->key . "\n";
=head2 put
# to create a new object
my $object = $bucket->object( key => 'this is the key' );
$object->put('this is the value');
# to create a new object which is publically-accessible with a
# content-type of text/plain
my $object = $bucket->object(
key => 'this is the public key',
acl_short => 'public-read',
content_type => 'text/plain',
);
$object->put('this is the public value');
You may also set Content-Encoding using C<content_encoding>, and
Content-Disposition using C<content_disposition>.
You may specify the S3 storage class by setting C<storage_class> to either
C<standard> or C<reduced_redundancy>; the default is C<standard>.
=head2 put_filename
# upload a file
my $object = $bucket->object(
key => 'images/my_hat.jpg',
content_type => 'image/jpeg',
);
$object->put_filename('hat.jpg');
# upload a file if you already know its md5_hex and size
my $object = $bucket->object(
key => 'images/my_hat.jpg',
content_type => 'image/jpeg',
etag => $md5_hex,
size => $size,
);
$object->put_filename('hat.jpg');
You may also set Content-Encoding using C<content_encoding>, and
Content-Disposition using C<content_disposition>.
You may specify the S3 storage class by setting C<storage_class> to either
C<standard> or C<reduced_redundancy>; the default is C<standard>.
User metadata may be set by providing a non-empty hashref as
C<user_metadata>.
=head2 query_string_authentication_uri
# use query string authentication
my $object = $bucket->object(
key => 'images/my_hat.jpg',
expires => '2009-03-01',
);
my $uri = $object->query_string_authentication_uri();
=head2 size
# show the size of an existing object (if fetched by listing
# a bucket)
print $object->size . "\n";
=head2 uri
# return the URI of a publically-accessible object
my $uri = $object->uri;
=head2 initiate_multipart_upload
#initiate a new multipart upload for this object
my $object = $bucket->object(
key => 'massive_video.avi'
);
my $upload_id = $object->initiate_multipart_upload;
=head2 put_part
#add a part to a multipart upload
my $put_part_response = $object->put_part(
upload_id => $upload_id,
part_number => 1,
value => $chunk_content,
);
my $part_etag = $put_part_response->header('ETag')
Returns an L<HTTP::Response> object. It is necessary to keep the ETags for
each part, as these are required to complete the upload.
=head2 complete_multipart_upload
#complete a multipart upload
$object->complete_multipart_upload(
upload_id => $upload_id,
etags => [$etag_1, $etag_2],
part_numbers => [$part_number_1, $part_number2],
);
The etag and part_numbers parameters are ordered lists specifying the part
numbers and ETags for each individual part of the multipart upload.
=head2 user_metadata
my $object = $bucket->object(key => $key);
my $content = $object->get; # or use $object->get_filename($filename)
# return the user metadata downloaded, as a hashref
my $user_metadata = $object->user_metadata;
To upload an object with user metadata, set C<user_metadata> at construction
time to a hashref, with no C<x-amz-meta-> prefixes on the key names. When
downloading an object, the C<get>, C<get_decoded> and C<get_filename>
ethods set the contents of C<user_metadata> to the same format.
=head1 AUTHOR
Rusty Conover <rusty@luckydinosaur.com>
=head1 COPYRIGHT AND LICENSE
This software is copyright (c) 2015 by Amazon Digital Services, Leon Brocard, Brad Fitzpatrick, Pedro Figueiredo, Rusty Conover.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
=cut
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