EC2インスタンスを起動させるためのLambdaファンクション

startInstance.js

var AWS = require('aws-sdk');

function startInstance(instance_id, context) {
    var ec2 = new AWS.EC2();
    var params = {
        InstanceIds: [
            instance_id
        ]
    };

    ec2.startInstances(params, function(err, data) {
        if (err){ console.log(err, err.stack);
        } else {
            ec2.waitFor('instanceRunning', params, function(err, data) {
                if (err) console.log(err, err.stack);
                else     context.done(null, data); 
            });
        }
    });
}

exports.handler = function(event, context) {
    startInstance(event.instance_id, context);
};