jrpc2 v1.0.5
JRPC2
JSON-RPC 2.0 library with support of batches and named parameters.
Middlewares:
- Koa Santinell/koa-jrpc2
- Express
- Socket.IO
Transports:
- HTTP
- TCP
- ZeroMQ Santinell/zmqTransport
INSTALL
npm install jrpc2
SERVER EXAMPLES
Using with Koa as middleware:
var rpc = require('jrpc2');
var koaMiddleware = require('koa-jrpc2');
var route = require('koa-route');
var app = require('koa')();
var rpcServer = new rpc.Server();
rpcServer.loadModules(__dirname + '/modules/', function () {
app.use(route.post('/api', koaMiddleware(rpcServer)));
app.listen(80);
});
Using with Express as middleware:
var rpc = require('jrpc2');
var app = require('express')();
var rpcServer = new rpc.Server();
rpcServer.loadModules(__dirname + '/modules/', function () {
app.post('/api', rpc.middleware(rpcServer));
app.listen(80);
});
Using with Socket.IO and Express middlewares:
var rpc = require('jrpc2');
var http = require('http');
var app = require('express')();
var rpcServer = new rpc.Server();
var httpServer = http.createServer(app);
var io = require('socket.io')(httpServer);
rpcServer.loadModules(__dirname + '/modules/', function () {
app.post('/api', rpc.middleware(rpcServer));
io.use(rpc.wsMiddleware(rpcServer));
httpServer.listen(80);
});
JSON-RPC modules loaded automatically. Just put it in one directory.
Example of 'math' module with no submodules (./modules/math.js in this example):
module.exports = {
add: function (a, b) {
return Promise.resolve(a + b);
},
pow: function (a, b) {
return Promise.resolve(Math.pow(a, b));
}
}
Example of 'math' module using submodules (Also ./modules/math.js):
module.exports = {
arithmetic: {
sum: function () {
var sum = 0;
for (var key in arguments) {
sum+=arguments[key];
}
return Promise.resolve(sum);
},
product: function () {
var product = 1;
for (var key in arguments) {
sum *= arguments[key];
}
return Promise.resolve(product);
}
},
exponential: {
log: function (num, base) {
return Promise.resolve(Math.log(num)/Math.log(base));
},
pow: function (base, power) {
return promise.resolve(Math.pow(base, power));
}
}
};
If you want you can manual load your methods and modules.
...
var rpcServer = new rpc.Server();
var fs = require('fs');
rpcServer.expose('sayHello',function(){
return Promise.resolve("Hello!");
});
rpcServer.exposeModule('fs',{
readFile: function (file) {
return new Promise(function (resolve, reject) {
fs.readFile(file, "utf-8", function (error, text) {
if (error)
reject(new Error(error));
else
resolve(text);
});
});
},
writeFile: function (file, data) {
return new Promise(function (resolve, reject) {
fs.writeFile(file, data, "utf-8", function (error) {
if (error)
reject(new Error(error);
else
resolve(true);
});
});
}
});
Context of methods already extended by request, but you can add some common server context.
...
var mongoose = require('mongoose');
rpcServer.loadModules(__dirname + '/modules/', function () {
mongoose.connect('mongodb://127.0.0.1:27017/test', function (err, db) {
rpcServer.context.mongoose = mongoose;
rpcServer.context.db = db;
...
}
}
And then use this.* in methods:
rpcServer.exposeModule('logs', {
loginBruteForce: function () {
//this.db from rpcServer.context
var logs = this.db.collection('logs');
//this.req.client_ip from headers
logs.save({ip: this.req.client_ip, addTime: new Date(), text: "Brute force of login form"});
return Promise.resolve();
}
});
CLIENT EXAMPLE
var rpc = require('jrpc2');
var http = new rpc.httpTransport({port: 8080, hostname: 'localhost'});
var client = new rpc.Client(http);
//single call with named parameters
client.invoke('users.auth', {password: "swd", login: "admin"}, function (err, raw) {
console.log(err, raw);
});
//single call with positional parameters
client.invoke('users.auth', ["user", "pass"], function (err, raw) {
console.log(err, raw);
});
//methods and parameters for batch call
var methods = ["users.auth", "users.auth"];
var params = [
{login: "cozy", password: "causeBorn"},
["admin", "wrong"]
];
client.batch(methods, params, function (err, raw) {
console.log(err, raw);
});
9 years ago
9 years ago
9 years ago
9 years ago
9 years ago
9 years ago
9 years ago
9 years ago
9 years ago
9 years ago
10 years ago
10 years ago
10 years ago
10 years ago
10 years ago
10 years ago
10 years ago
10 years ago
10 years ago
10 years ago
10 years ago
10 years ago
10 years ago
10 years ago
10 years ago
10 years ago
10 years ago
10 years ago
10 years ago
10 years ago
10 years ago
10 years ago
10 years ago
10 years ago
10 years ago
10 years ago
10 years ago
10 years ago
10 years ago
10 years ago
10 years ago