Send SMS Amazon SNS Nodejs

send_sms.js

/** 
 * @Author: bachvtuan@gmail.com
 * to_number: String : user phone number
 * message: String : sms message
 * func_callback: function : callback function( status )
 * Reference links :
 * https://gist.github.com/stuartmyles/8099723
 * http://docs.aws.amazon.com/AWSJavaScriptSDK/latest/AWS/SNS.html#deleteTopic-property
 */
function sendSMS(to_number, message, func_callback) {

    
    AWS.config.update({
        accessKeyId: Config.amazon_sns.accessKeyId,
        secretAccessKey: Config.amazon_sns.secretAccessKey,
        region: Config.amazon_sns.region
    });

    var sns = new AWS.SNS();

    var SNS_TOPIC_ARN = Config.amazon_sns.arn.sms;

    sns.subscribe({
        Protocol: 'sms',
        //You don't just subscribe to "news", but the whole Amazon Resource Name (ARN)
        TopicArn: SNS_TOPIC_ARN,
        Endpoint: to_number
    }, function(error, data) {
        if (error) {
            common.log("error when subscribe", error);
            return func_callback(false);
        }


        common.log("subscribe data", data);
        var SubscriptionArn = data.SubscriptionArn;

        var params = {
            TargetArn: SNS_TOPIC_ARN,
            Message: message,
            //hardcode now
            Subject: 'Admin'
        };

        sns.publish(params, function(err_publish, data) {
            if (err_publish) {
                common.log('Error sending a message', err_publish);

            } else {
                common.log('Sent message:', data.MessageId);
            }

            var params = {
                SubscriptionArn: SubscriptionArn
            };

            sns.unsubscribe(params, function(err, data) {
                if (err) {
                    common.log("err when unsubscribe", err);
                }
                return func_callback(err_publish != null);
            });
        });
    });
}