/
index.js
50 lines (45 loc) · 1.27 KB
/
index.js
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const request = require('request-promise');
const client = require('./lib/client');
function wsRest(app, uri = '/ws') {
const ws = require('express-ws')(app);
app.ws(uri, function(ws, req, next){
ws.on('message', function(msg){
let json = JSON.parse(msg);
request(json.data)
.then(function(data){
let message = {messageId: json.messageId, timestamp: new Date(), data: data};
ws.send(JSON.stringify(message), function(err){
if (err) {
console.log('cannot send message:', message, err);
}
});
}).catch(function(error) {
let message = {messageId: json.messageId, timestamp: new Date(), error: error};
ws.send(JSON.stringify(message), function(err){
if (err) {
console.log('cannot send message:', message, err);
}
});
});
});
next();
});
}
function sendMessage(ws, message) {
if (ws.readyState === 1) {
try {
ws.send(message);
} catch (e) {
console.log('throw error');
}
} else {
console.log('trying to send: ' + message['messageId']);
setTimeout(function(){
sendMessage(ws, message);
}, 100);
}
}
module.exports = {
use: wsRest,
wsRestClient: client
};