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Mini Shell
Mini Shell
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const Debug = require("debug");
const eventemitter2_1 = require("eventemitter2");
const cluster = require("cluster");
const EventLoopInspector = require("event-loop-inspector");
class IPCTransport extends eventemitter2_1.EventEmitter2 {
constructor() {
super(...arguments);
this.initiated = false;
this.logger = Debug('axm:transport:ipc');
this.eventLoopInspector = EventLoopInspector(false);
}
init(config) {
this.logger('Init new transport service');
if (this.initiated === true) {
console.error(`Trying to re-init the transport, please avoid`);
return this;
}
this.initiated = true;
this.logger('Agent launched');
this.onMessage = (data) => {
this.logger(`Received reverse message from IPC`);
this.emit('data', data);
};
process.on('message', this.onMessage);
if (cluster.isWorker === false) {
this.autoExitHook();
}
return this;
}
autoExitHook() {
this.autoExitHandle = setInterval(() => {
const dump = this.eventLoopInspector.dump();
const requests = Object.keys(dump.requests);
const handles = Object.keys(dump.handles);
const sockets = dump.handles.Socket;
const pipes = dump.handles.Pipe;
const hasStdOut = sockets && sockets.find(sock => sock.fd === 1) !== undefined;
const hasStdErr = sockets && sockets.find(sock => sock.fd === 2) !== undefined;
const isSocketStds = sockets && sockets.length === 2 && hasStdErr && hasStdOut;
const isOnlySocketStds = handles.length === 1 && isSocketStds;
const isStdsWithIPC = isSocketStds && pipes && pipes.length === 1 && handles.length === 2;
const shouldStillExit = isStdsWithIPC || isOnlySocketStds;
if ((handles.length > 0 || requests.length > 0) && shouldStillExit === false) {
return this.logger('no need to exit, there are handles/requests in uv', JSON.stringify(dump));
}
this.logger(`Nothing found in uv, removing the IPC listener`);
process.removeListener('message', this.onMessage);
let tmp = setTimeout(_ => {
this.logger(`Still alive, listen back to IPC`);
process.on('message', this.onMessage);
}, 200);
tmp.unref();
}, 5000);
this.autoExitHandle.unref();
}
setMetrics(metrics) {
const serializedMetric = metrics.reduce((object, metric) => {
if (typeof metric.name !== 'string')
return object;
object[metric.name] = {
historic: metric.historic,
unit: metric.unit,
type: metric.id,
value: metric.value
};
return object;
}, {});
this.send('axm:monitor', serializedMetric);
}
addAction(action) {
this.logger(`Add action: ${action.name}:${action.type}`);
this.send('axm:action', {
action_name: action.name,
action_type: action.type,
arity: action.arity,
opts: action.opts
});
}
setOptions(options) {
this.logger(`Set options: [${Object.keys(options).join(',')}]`);
return this.send('axm:option:configuration', options);
}
send(channel, payload) {
if (typeof process.send !== 'function')
return -1;
try {
process.send({ type: channel, data: payload });
}
catch (err) {
this.logger('Process disconnected from parent !');
this.logger(err);
return process.exit(1);
}
}
destroy() {
if (this.onMessage !== undefined) {
process.removeListener('message', this.onMessage);
}
if (this.autoExitHandle !== undefined) {
clearInterval(this.autoExitHandle);
}
this.logger('destroy');
}
}
exports.IPCTransport = IPCTransport;
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hDLE9BQU8sQ0FBQyxjQUFjLENBQUMsU0FBUyxFQUFFLElBQUksQ0FBQyxTQUFTLENBQUMsQ0FBQTtTQUNsRDtRQUNELElBQUksSUFBSSxDQUFDLGNBQWMsS0FBSyxTQUFTLEVBQUU7WUFDckMsYUFBYSxDQUFDLElBQUksQ0FBQyxjQUFjLENBQUMsQ0FBQTtTQUNuQztRQUNELElBQUksQ0FBQyxNQUFNLENBQUMsU0FBUyxDQUFDLENBQUE7SUFDeEIsQ0FBQztDQUNGO0FBakhELG9DQWlIQyJ9
Zerion Mini Shell 1.0