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Feature/ws api (#72)

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initial changes to support websockets as an alternative to webhooks
This commit is contained in:
Dave Horton
2022-02-26 14:06:52 -05:00
committed by GitHub
parent 5bfc451c85
commit 3c5d392407
22 changed files with 717 additions and 56 deletions
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27
lib/middleware.js
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@@ -1,7 +1,8 @@
const { v4: uuidv4 } = require('uuid');
const {CallDirection} = require('./utils/constants');
const CallInfo = require('./session/call-info');
const Requestor = require('./utils/requestor');
const HttpRequestor = require('./utils/http-requestor');
const WsRequestor = require('./utils/ws-requestor');
const makeTask = require('./tasks/make_task');
const parseUri = require('drachtio-srf').parseUri;
const normalizeJambones = require('./utils/normalize-jambones');
@@ -142,10 +143,18 @@ module.exports = function(srf, logger) {
* create a requestor that we will use for all http requests we make during the call.
* also create a notifier for call status events (if not needed, its a no-op).
*/
app.requestor = new Requestor(logger, account_sid, app.call_hook, accountInfo.account.webhook_secret);
if (app.call_status_hook) app.notifier = new Requestor(logger, account_sid, app.call_status_hook,
accountInfo.account.webhook_secret);
else app.notifier = {request: () => {}};
if ('WS' === app.call_hook?.method ||
app.call_hook?.url.startsWith('ws://') || app.call_hook?.url.startsWith('wss://')) {
app.requestor = new WsRequestor(logger, account_sid, app.call_hook, accountInfo.account.webhook_secret) ;
app.notifier = app.requestor;
app.call_hook.method = 'WS';
}
else {
app.requestor = new HttpRequestor(logger, account_sid, app.call_hook, accountInfo.account.webhook_secret);
if (app.call_status_hook) app.notifier = new HttpRequestor(logger, account_sid, app.call_status_hook,
accountInfo.account.webhook_secret);
else app.notifier = {request: () => {}};
}
req.locals.application = app;
const obj = Object.assign({}, app);
@@ -176,15 +185,15 @@ module.exports = function(srf, logger) {
return next();
}
/* retrieve the application to execute for this inbound call */
const params = Object.assign(app.call_hook.method === 'POST' ? {sip: req.msg} : {},
const params = Object.assign(['POST', 'WS'].includes(app.call_hook.method) ? {sip: req.msg} : {},
req.locals.callInfo);
const json = await app.requestor.request(app.call_hook, params);
const json = await app.requestor.request('session:new', app.call_hook, params);
app.tasks = normalizeJambones(logger, json).map((tdata) => makeTask(logger, tdata));
if (0 === app.tasks.length) throw new Error('no application provided');
next();
} catch (err) {
logger.info({err}, `Error retrieving or parsing application: ${err.message}`);
res.send(480, {headers: {'X-Reason': err.message}});
logger.info({err}, `Error retrieving or parsing application: ${err?.message}`);
res.send(480, {headers: {'X-Reason': err?.message || 'unknown'}});
}
}