AWS Lib is minimalist implementation, truly object-oriented and interface-based with immutable objects, for Amazon Web Services.

The code have some principles:

1. all classes are sealed
2. all methods return an interface or primitive type
3. all public methods are implementations of interface methods
4. all instances are immutable
5. memory is released automatically

A "Bigger" Example using Amazon S3

Bellow you see a complete example to create a new Bucket and send a file on it.

program s3;
{$mode objfpc}{$H+}
uses
  aws_client,
  aws_s3;

begin
  TS3Service.New(
    TAWSClient.New(
      TAWSSignatureVersion1.New(
        TAWSCredentials.New('access_key', 'secret_key', True)
      )
    )
  )
  .Buckets
  .Put('mys3examplebucket', '/')
  .Objects
  .Put('foo.txt', 'plain', './foo.txt', '');
end.

First a Region object was created -- this is your connection to the Amazon services.

Second, using just one line, the code creates a new Bucket and put a new file on it.

No need to release memory!

To get this file that was sent, use the code:

  TS3Service.New(
    TAWSClient.New(
      TAWSSignatureVersion1.New(
        TAWSCredentials.New('access_key', 'secret_key', True)
      )
    )
  )
  .Buckets
  .Get('mys3examplebucket', '/')
  .Objects
  .Get('foo.txt', '/');
  .Stream
  .SaveToFile('./foo.txt');

To delete this file on server, use the code:

  TS3Service.New(
    TAWSClient.New(
      TAWSSignatureVersion1.New(
        TAWSCredentials.New('access_key', 'secret_key', True)
      )
    )
  )
  .Buckets
  .Get('mys3examplebucket', '/')
  .Objects
  .Delete('foo.txt');

Dependencies

There is only one dependency: Synapse

Synapse is used as HTTP client. You can customize or create a new client using another lib like lNet, fpHttpClient, whatever.

Got questions?

If you have questions or general suggestions, don't hesitate to submit a new Github issue.

Amazon S3 Documentation

• REST API
• Error responses

License

Copyright (c) 2017 Marcos Douglas B. Santos

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.