Example of the AWS SDK v1.0 release...

aws-sdk-example.go

// Create a session
s := session.New(aws.NewConfig().WithRegion("us-west-2"))
// Add a handler to print every API request for the session
s.Handlers.Send.PushFront(func(r *request.Request) {
	fmt.Printf("Request: %s/%s\n", r.ClientInfo.ServiceName, r.Operation)
})
// We want to start all instances in a VPC, so let's get their IDs first.
ec2client := ec2.New(s)
var instanceIDsToStart []*string
describeInstancesInput := &ec2.DescribeInstancesInput{
	Filters: []*ec2.Filter{
		&ec2.Filter{
			Name:   aws.String("vpc-id"),
			Values: aws.StringSlice([]string{"vpc-82977de9"}),
		},
	},
}
// Use a paginator to easily iterate over multiple pages of response
ec2client.DescribeInstancesPages(describeInstancesInput,
	func(page *ec2.DescribeInstancesOutput, lastPage bool) bool {
		// Use JMESPath expressions to query complex structures
		ids, _ := awsutil.ValuesAtPath(page, "Reservations[].Instances[].InstanceId")
		for _, id := range ids {
			instanceIDsToStart = append(instanceIDsToStart, id.(*string))
		}
		return !lastPage
	})
// The SDK provides several utility functions for literal <--> pointer transformation
fmt.Println("Starting:", aws.StringValueSlice(instanceIDsToStart))
// Skipped for brevity here, but *always* handle errors in the real world :)
ec2client.StartInstances(&ec2.StartInstancesInput{
	InstanceIds: instanceIDsToStart,
})
// Finally, use a waiter function to wait until the instances are running
ec2client.WaitUntilInstanceRunning(describeInstancesInput)
fmt.Println("Instances are now running.")