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add support for live call control

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This commit is contained in:
Dave Horton
2020-02-07 10:26:35 -05:00
parent 2811e35c6b
commit 3ca2d982cc
18 changed files with 332 additions and 73 deletions
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56
lib/http-routes/api/create-call.js
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@@ -11,21 +11,51 @@ const Srf = require('drachtio-srf');
const drachtio = config.get('outdials.drachtio');
const sbcs = config.get('outdials.sbc');
const Mrf = require('drachtio-fsmrf');
const installSrfLocals = require('../../utils/install-srf-locals');
let idxDrachtio = 0;
let idxSbc = 0;
let srfs = [];
let initializedSrfs = false;
const srfs = drachtio.map((d) => {
const srf = new Srf();
srf.connect(d);
srf
.on('connect', (err, hp) => {
if (!err) console.log(`Connected to drachtio at ${hp} for REST outdials`);
else console.log(`Error connecting to drachtio for outdials: ${err}`);
srf.locals.mrf = new Mrf(srf);
})
.on('error', (err) => console.log(err));
return srf;
});
/**
* Connect to a single drachtio server, returning a Promise when connected.
* Upon connect, add ourselves to the list of active servers, removing if we lose the connection
*/
function connectSrf(logger, d) {
return new Promise((resolve, reject) => {
const srf = new Srf();
srf.connect(d);
srf
.on('connect', (err, hp) => {
if (!err) logger.info(`connectSrf: Connected to drachtio at ${hp} for REST outdials`);
else logger.error(`connectSrf: Error connecting to drachtio for outdials: ${err}`);
srf.locals.mrf = new Mrf(srf);
installSrfLocals(srf, logger);
srfs.push(srf);
resolve(srf);
})
.on('error', (err) => {
logger.error(err, 'connectSrf error');
srfs = srfs.filter((s) => s !== srf);
reject(err);
});
});
}
/**
* Retrieve a connection to a drachtio server, lazily creating when first called
*/
function getSrfForOutdial(logger) {
return new Promise((resolve, reject) => {
if (srfs.length === 0 && initializedSrfs) return reject('no available drachtio servers for outdial');
else if (srfs.length > 0) return resolve(srfs[idxDrachtio++ % srfs.length]);
else {
logger.debug(drachtio, 'getSrfForOutdial - attempting to connect');
initializedSrfs = true;
resolve(Promise.race(drachtio.map((d) => connectSrf(logger, d))));
}
});
}
async function validate(logger, payload) {
const data = Object.assign({}, {
@@ -57,7 +87,7 @@ router.post('/', async(req, res) => {
let uri, cs, to;
const restDial = await validate(logger, req.body);
const sbcAddress = sbcs[idxSbc++ % sbcs.length];
const srf = srfs[idxDrachtio++ % srfs.length];
const srf = await getSrfForOutdial(logger);
const target = restDial.to;
const opts = {
'callingNumber': restDial.from