96 satır
2.4 KiB
JavaScript
96 satır
2.4 KiB
JavaScript
'use strict';
|
|
|
|
function getInstanceMethods(inst) {
|
|
var instanceMethods = Object.keys(inst)
|
|
.map(function (key) { return 'function' === typeof inst[key] ? key : null; })
|
|
.filter(function (key) { return key; })
|
|
;
|
|
|
|
var protoMethods = Object.keys(Object.getPrototypeOf(inst))
|
|
.map(function (key) { return 'function' === typeof Object.getPrototypeOf(inst)[key] ? key : null; })
|
|
.filter(function (key) { return key; })
|
|
;
|
|
|
|
return instanceMethods.concat(protoMethods);
|
|
}
|
|
|
|
function getMethods(inst, keys) {
|
|
if (!keys) {
|
|
keys = getInstanceMethods(inst);
|
|
}
|
|
|
|
return keys.filter(function (key) {
|
|
if ('function' === typeof inst[key]) {
|
|
return true;
|
|
}
|
|
});
|
|
}
|
|
|
|
module.exports.create = function (opts) {
|
|
var PromiseA = opts.PromiseA || global.Promise;
|
|
var crypto = require('crypto');
|
|
var inst = opts.instance;
|
|
var methods = getMethods(opts.instance, opts.methods);
|
|
var token = crypto.randomBytes(16).toString('hex');
|
|
var msgPrefix = 'cluster-rpc.' + opts.name;
|
|
var rpcPrefix = msgPrefix + '.rpc';
|
|
var resultPrefix = msgPrefix + '.result';
|
|
var initPrefix = msgPrefix + '.init';
|
|
|
|
opts.master = opts.master || require('./process/master').create();
|
|
|
|
opts.master.on('connection', function (w) {
|
|
//console.log('debug w: worker connection');
|
|
w.send({
|
|
methods: methods
|
|
, _token: token
|
|
, type: initPrefix
|
|
});
|
|
|
|
w.on('message', function (cmd) {
|
|
if (0 !== (cmd.type||'').indexOf(msgPrefix)) {
|
|
//console.log('debug w: got unknown message type');
|
|
return;
|
|
}
|
|
|
|
if (token !== cmd._token) {
|
|
//console.log('debug w: got bad token');
|
|
return;
|
|
}
|
|
|
|
if (!Array.isArray(cmd.args)) {
|
|
throw new Error("[Sanity Fail] 'args' should be array of arguments");
|
|
}
|
|
|
|
switch (cmd.type) {
|
|
case rpcPrefix:
|
|
cmd.args.push(function callback() {
|
|
// args is probably err, data in most cases
|
|
var args = Array.prototype.slice.call(arguments);
|
|
|
|
w.send({
|
|
args: args
|
|
, id: cmd.id
|
|
//, this: this
|
|
, _token: token
|
|
, type: resultPrefix
|
|
});
|
|
});
|
|
|
|
inst[cmd.func].apply(inst, cmd.args);
|
|
break;
|
|
|
|
default:
|
|
throw new Error("cluster-ipc UNKNOWN TYPE");
|
|
//break;
|
|
}
|
|
|
|
});
|
|
});
|
|
|
|
opts._promise = PromiseA.resolve(inst);
|
|
opts._promise.addWorker = opts.master.addWorker;
|
|
|
|
return opts._promise;
|
|
};
|