NAME
Amazon::S3::Thin - A thin, lightweight, low-level Amazon S3 client
SYNOPSIS
use Amazon::S3::Thin;
my $s3client = Amazon::S3::Thin->new(
{ aws_access_key_id => $aws_access_key_id,
aws_secret_access_key => $aws_secret_access_key,
}
);
my $key = "dir/file.txt";
my $response;
$response = $s3client->put_object($bucket, $key, "hello world");
$response = $s3client->get_object($bucket, $key);
print $response->content; # => "hello world"
$response = $s3client->delete_object($bucket, $key);
$response = $s3client->copy_object($src_bucket, $src_key,
$dst_bucket, $dst_key);
$response = $s3client->list_objects(
$bucket,
{prefix => "foo", delimiter => "/"}
);
$response = $s3client->head_object($bucket, $key);
You can also pass any useragent as you like
my $s3client = Amazon::S3::Thin->new(
{ aws_access_key_id => $aws_access_key_id,
aws_secret_access_key => $aws_secret_access_key,
ua => $any_LWP_copmatible_useragent,
}
);
DESCRIPTION
Amazon::S3::Thin is a thin, lightweight, low-level Amazon S3 client.
It's designed for only ONE purpose: Send a request and get a response.
In detail, it offers the following features:
-
Low Level
It returns an HTTP::Response object so you can easily inspect what's happening inside, and can handle errors as you like.
-
Low Dependency
It does not require any XML::* modules, so installation is easy;
-
Low Learning Cost
The interfaces are designed to follow S3 official REST APIs. So it is easy to learn.
Comparison to precedent modules
There are already some useful modules like Amazon::S3, Net::Amazon::S3
on CPAN. They provide a "Perlish" interface, which looks pretty
for Perl programmers, but they also hide low-level behaviors.
For example, the "get_key" method translate HTTP status 404 into undef and
HTTP 5xx status into exception.
In some situations, it is very important to see the raw HTTP communications. That's why I made this module.
CONSTRUCTOR
new( \%params )
Receives: hashref with options.
Returns: Amazon::S3::Thin object
It can receive the following arguments:
aws_access_key_id(REQUIRED) - an access key id of your credentials.aws_secret_access_key(REQUIRED) - an secret access key of your credentials.secure- whether to use https or not. Default is 0 (http).host- the base host to use. Default is 's3.amazonaws.com'.ua- a user agent object, compatible with LWP::UserAgent. Default is an instance of LWP::UserAgent.
ACCESSORS
The following accessors are provided. You can use them to get/set your object's attributes.
secure
Whether to use https (1) or http (0) when connecting to S3.
host
The base host to use for connecting to S3.
ua
The user agent used internally to perform requests and return responses. If you set this attribute, please make sure you do so with an object compatible with LWP::UserAgent (i.e. providing the same interface).
METHODS
get_object( $bucket, $key )
Arguments: a string with the bucket name, and a string with the key name.
Returns: an HTTP::Response object for the request. Use the content()
method on the returned object to read the contents:
my $res = $s3->get_object( 'my.bucket', 'my/key.ext' );
if ($res->is_success) {
my $content = $res->content;
}
The GET operation retrieves an object from Amazon S3.
For more information, please refer to Amazon's documentation for GET.
delete_object( $bucket, $key )
Arguments: a string with the bucket name, and a string with the key name.
Returns: an HTTP::Response object for the request.
The DELETE operation removes the null version (if there is one) of an object and inserts a delete marker, which becomes the current version of the object. If there isn't a null version, Amazon S3 does not remove any objects.
Use the response object to see if it succeeded or not.
For more information, please refer to Amazon's documentation for DELETE.
copy_object( $src_bucket, $src_key, $dst_bucket, $dst_key )
Arguments: a list with source (bucket, key) and destination (bucket, key)
Returns: an HTTP::Response object for the request.
This method is a variation of the PUT operation as described by Amazon's S3 API. It creates a copy of an object that is already stored in Amazon S3. This "PUT copy" operation is the same as performing a GET from the old bucket/key and then a PUT to the new bucket/key.
For more information, please refer to Amazon's documentation for COPY.
put_object( $bucket, $key, $content [, $headers] )
Arguments:
a list of the following items, in order:
-
- bucket - a string with the destination bucket
-
- key - a string with the destination key
-
- content - a string with the content to be uploaded
-
- headers (optional) - hashref with extra headr information
Returns: an HTTP::Response object for the request.
The PUT operation adds an object to a bucket. Amazon S3 never adds partial objects; if you receive a success response, Amazon S3 added the entire object to the bucket.
For more information, please refer to Amazon's documentation for PUT.
list_objects( $bucket [, \%options ] )
Arguments: a string with the bucket name, and (optionally) a hashref with any of the following options:
prefix(string) - only return keys that begin with the specified prefix. You can use prefixes to separate a bucket into different groupings of keys, the same way you'd use a folder in a file system.delimiter(string) - group keys that contain the same string between the beginning of the key (or after the prefix, if specified) and the first occurrence of the delimiter.encoding-type(string) - if set to "url", will encode keys in the response (useful when the XML parser can't work unicode keys).marker(string) - specifies the key to start with when listing objects. Amazon S3 returns object keys in alphabetical order, starting with the key right after the marker, in order.max-keys(string) - Sets the maximum number of keys returned in the response body. You can add this to your request if you want to retrieve fewer than the default 1000 keys.
Returns: an HTTP::Response object for the request. Use the content()
method on the returned object to read the contents:
This method returns some or all (up to 1000) of the objects in a bucket. Note
that the response might contain fewer keys but will never contain more.
If there are additional keys that satisfy the search criteria but were not
returned because the limit (either 1000 or max-keys) was exceeded, the
response will contain <IsTruncated>true</IsTruncated>. To return the
additional keys, see marker above.
For more information, please refer to Amazon's documentation for REST Bucket GET.
TODO
lots of APIs are not implemented yet.
REPOSITORY
https://github.com/DQNEO/Amazon-S3-Thin
LICENSE
Copyright (C) DQNEO.
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
AUTHOR
DQNEO
ORIGINAL AUTHOR
Timothy Appnel tima@cpan.org Amazon::S3 https://github.com/tima/perl-amazon-s3