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AWS Lambda Function to send an SMS message via the Twilio API
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console.log('Loading event'); | |
// Twilio Credentials | |
var accountSid = ''; | |
var authToken = ''; | |
var fromNumber = ''; | |
var https = require('https'); | |
var queryString = require('querystring'); | |
// Lambda function: | |
exports.handler = function (event, context) { | |
console.log('Running event'); | |
// Send an SMS message to the number provided in the event data. | |
// End the lambda function when the send function completes. | |
SendSMS(event.to, 'Hello from Lambda Functions!', | |
function (status) { context.done(null, status); }); | |
}; | |
// Sends an SMS message using the Twilio API | |
// to: Phone number to send to | |
// body: Message body | |
// completedCallback(status) : Callback with status message when the function completes. | |
function SendSMS(to, body, completedCallback) { | |
// The SMS message to send | |
var message = { | |
To: to, | |
From: fromNumber, | |
Body: body | |
}; | |
var messageString = queryString.stringify(message); | |
// Options and headers for the HTTP request | |
var options = { | |
host: 'api.twilio.com', | |
port: 443, | |
path: '/2010-04-01/Accounts/' + accountSid + '/Messages.json', | |
method: 'POST', | |
headers: { | |
'Content-Type': 'application/x-www-form-urlencoded', | |
'Content-Length': Buffer.byteLength(messageString), | |
'Authorization': 'Basic ' + new Buffer(accountSid + ':' + authToken).toString('base64') | |
} | |
}; | |
// Setup the HTTP request | |
var req = https.request(options, function (res) { | |
res.setEncoding('utf-8'); | |
// Collect response data as it comes back. | |
var responseString = ''; | |
res.on('data', function (data) { | |
responseString += data; | |
}); | |
// Log the responce received from Twilio. | |
// Or could use JSON.parse(responseString) here to get at individual properties. | |
res.on('end', function () { | |
console.log('Twilio Response: ' + responseString); | |
completedCallback('API request sent successfully.'); | |
}); | |
}); | |
// Handler for HTTP request errors. | |
req.on('error', function (e) { | |
console.error('HTTP error: ' + e.message); | |
completedCallback('API request completed with error(s).'); | |
}); | |
// Send the HTTP request to the Twilio API. | |
// Log the message we are sending to Twilio. | |
console.log('Twilio API call: ' + messageString); | |
req.write(messageString); | |
req.end(); | |
} |
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