index.js

exports.handler = function (event, context, callback) {
    var https = require('https');
    var AWS = require('aws-sdk');

    var imsi = 'PUT YOUR IMSI';
    var to_mail_addr = 'PUT YOUR MAIL ADDRESS YOU RECIEVED ALERT MAIL';
    var from_mail_addr = 'PUT YOUR MAIL ADDRESS YOU SEND ALERT MAIL(SES)';

    var soracom_key = 'PUT YOUR SORACOM API KEY'
    var soracom_token = 'PUT YOUR SORACOM API TOKEN'

    var aws_key = 'PUT YOUR AWS API KEY TO SEND MAIL FROM SES'
    var aws_sec = 'PUT YOUR AWS API SECRET KEY TO SEND MAIL FROM SES'

    var kms = new AWS.KMS({ region: 'ap-northeast-1' });

    var options = {
        hostname: 'api.soracom.io',
        path: '/v1/subscribers/' + imsi,
        method: 'GET',
        headers: {
          'X-Soracom-API-Key': soracom_key,
          'X-Soracom-Token': soracom_token
        }
    };
    var req = https.request(options, (response) => {
        var buf = "";
        response.on('data', (chunk) => {
            buf = buf + chunk;
        })
        response.on('end', () => {
            const body = JSON.parse(buf);
            if (body.sessionStatus.online != true) {
                var ses = new AWS.SES({apiVersion: '2010-12-01',
                    accessKeyId: aws_key,
                    secretAccesskey: aws_token,
                    region: 'us-east-1'
                });
                var params = {
                    Destination: {
                        ToAddresses: [ to_mail_addr ]
                    },
                    Message: {
                        Body: {
                            Text: {
                                Data: 'SIM(' + body.imsi + ') is offline',
                                Charset: 'utf-8'
                            }
                        },
                        Subject: {
                            Data: 'SIM error occured',
                            Charset: 'utf-8'
                        }
                    },
                    Source: from_mail_addr
                };
                ses.sendEmail(params, function (err, data) {
                    if (err) { callback ('e', err); }
                    else { callback(null, data); }
                });
            }
        });
    });
    req.end();
}