evo-im.js
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var strftime = require('strftime');
var request = require('request');
var xmlparser = require('xml2js').parseString;
var http = require('http');
var url = require('url');
var config;
var logger;
var sendMessage;
function start(options) {
try {
sendMessage = options.sendMessage;
}
catch(e) {
console.log('undefined send message. Exiting');
process.exit(2);
}
if (options && options.config) {
config = options.config;
}
if (options && options.logger) {
logger = options.logger;
}
createHttpServer();
}
function formatTimestamp(ms) {
return strftime('%F %T', new Date(ms));
}
function onMessage(sender, message, ts) {
var opts = {
url: config.evo_url,
qs: {
msg: message,
msisdn: sender,
smsc: config.smsc,
ts: formatTimestamp(ts)
}
};
logger.verbose("Forwarding message to evo", {request_opts: opts});
request(opts, function(err, response, body) {
if (err) {
logger.warn('Error forwarding to evo: ' + err);
return;
}
if (response.statusCode != 200) {
logger.warn('HTTP Status from evo: ' + response.statusCode, {status: response.statusCode, body: body});
return;
}
logger.verbose('Got response from evo', {body: body});
xmlparser(body, function(xmlerr, parsedResponse) {
if (xmlerr) {
logger.verbose('Evo response not in xml format');
return;
}
return;
logger.info('Evo response in xml format', {response: parsedResponse});
if (parsedResponse.response.text) {
sendMessage(sender, parsedResponse.response.text[0].trim());
}
});
});
}
function onHttpIncomingMessage(request, response) {
var qs = url.parse(request.url, true).query;
logger.verbose("onHttpIncomingMessage()", {qs: qs});
//var destination = qs.to.replace(config.msisdn_suffix, '');
logger.info('Sending message to ' + qs.to + ': ' + (qs.msg || qs.text));
sendMessage(qs.to, qs.msg || qs.text);
response.end('OK');
}
function createHttpServer() {
logger.verbose('createHttpServer()');
var httpServer = http.createServer(onHttpIncomingMessage);
httpServer.listen(config.listen_port, function(){
logger.info("HTTP server listening on " + config.listen_port);
});
}
exports.start = start;
exports.formatTimestamp = formatTimestamp;
exports.onMessage = onMessage;