Ubuntu Wiki

What is it?

The goamz package enables Go programs to interact with the Amazon Web Services.

It was developed within Canonical as part of an experiment related to using the Go language with the Ensemble project.

The API of AWS is very comprehensive, and goamz doesn't even scratch the surface of it, focusing so far in a few operations to interact with the EC2 and S3 query APIs. That said, it's fairly well tested, and is the foundation in which further calls can easily be integrated. We'll continue extending the API as necessary.

API documentation

The API documentation is currently available at:

• http://goneat.org/pkg/launchpad.net/goamz/aws

• http://goneat.org/pkg/launchpad.net/goamz/ec2

• http://goneat.org/pkg/launchpad.net/goamz/s3

Example

Here is a simple example which connects to ZooKeeper, waits for the session to be established, and attempts to create a node:

package main

import (
    "launchpad.net/goamz/aws"
    "launchpad.net/goamz/ec2"
)

func main() {
    auth, err := aws.EnvAuth()
    if err != nil {
        panic(err.String())
    }
    e := ec2.New(auth, aws.USEast)

    options := ec2.RunInstances{
        ImageId:      "ami-ccf405a5", // Ubuntu Maverick, i386, EBS store
        InstanceType: "t1.micro",
    }
    resp, err := e.RunInstances(&options)
    if err != nil {
        panic(err.String())
    }

    for _, instance := range resp.Instances {
        println("Now running", instance.InstanceId)
    }
    println("Make sure you terminate instances to stop the cash flow.")
}

This example will generate the following output:

Source code

To obtain the source code, use Bazaar to download projects from Launchpad:

$ bzr branch lp:goamz/aws
$ bzr branch lp:goamz/ec2
$ bzr branch lp:goamz/s3

Reporting bugs

Please report bugs at:

• https://launchpad.net/goamz

How to build and install goamz

Use goinstall with the following commands:

$ goinstall launchpad.net/goamz/aws
$ goinstall launchpad.net/goamz/ec2
$ goinstall launchpad.net/goamz/s3

Running tests

To run tests, first install gocheck with:

$ goinstall launchpad.net/gocheck

Then run gotest as usual:

$ gotest

If you want to run integration tests (costs money), set up the EC2 environment variables as usual, and run:

$ gotest -i

License

goamz is licensed under the LGPL.

Contact

This project is being developed under the Ensemble project at Canonical.

To get in touch, send a message to the Ensemble mailing list at: <ensemble@lists.ubuntu.com>