lambda play

gistfile1.txt

/**
 * AWS Module: Action: Modularized Code
 */

// Export For Lambda Handler
module.exports.run = function(event, context, cb) {
  return cb(null, action());
};

// Your Code
var action = function() {
	console.log('Loading function');
	var aws = require('aws-sdk');
	var ddb = new aws.DynamoDB({
		region: "us-east-1",
 		params: {TableName: "messages"}});

    var params = {
                "KeyConditions": {
                    "channel": {
                        "AttributeValueList": [{
                            "S": "default"
                        }],
                        "ComparisonOperator": "EQ"
                    }
                },
                "Limit": 20,
                "ScanIndexForward":false
            }
     console.log("Querying DynamoDB");

     var messageData = {
        messages: []
     };
     
     ddb.query(params, function(err, data) {
	  	if (err) {
	  		console.log(err, err.stack); // an error occurred
	  	} else {
	  		console.log('result: ' + JSON.stringify(response)); // successful response

	  		for (var i = response.Items.length - 1; i >=  0; i--)  {
		        ii = response.Items[i];
		        var message = {};
		        message['name'] = ii.name['S'];
		        message['message'] = ii.message['S'];
		        message['channel'] = ii.channel['S'];
		        message['timestamp'] = Number(ii.timestamp['N']);
		        messageData.messages.push(message);
		    }
	  	}    
	 });

     return messageData;
};