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Copy pathindex.js
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executable file
·301 lines (259 loc) · 8.32 KB
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var net = require('net');
var tls = require('tls');
var http = require('http');
var EventEmitter = require('events').EventEmitter;
var protocol = require('koding-dnode-protocol'); // koding has own implementation of dnode-protocol.
var Lazy = require('lazy');
var SocketIO = require('./lib/stream_socketio');
exports = module.exports = dnode;
function dnode (wrapper) {
if (!(this instanceof dnode)) return new dnode(wrapper);
this.proto = protocol(wrapper);
this.stack = [];
this.streams = [];
return this;
}
dnode.prototype = new EventEmitter;
dnode.prototype.use = function (middleware) {
this.stack.push(middleware);
return this;
};
dnode.prototype.connect = function () {
var params = protocol.parseArgs(arguments);
var stream = params.stream;
var client = null;
var self = this;
if (params.port) {
params.host = params.host || '127.0.0.1';
if (params.key) {
var options = {
key: params.key,
cert: params.cert,
ca: params.ca,
requestCert: params.requestCert,
rejectUnauthorized: params.rejectUnauthorized
};
stream = tls.connect(params.port, params.host, options, function() {
attachDnode();
});
}
else {
stream = net.createConnection(params.port, params.host);
stream.on('connect', function() {
attachDnode();
});
}
}
else if (params.path) {
stream = net.createConnection(params.path);
stream.on('connect', function() {
attachDnode();
});
}
else {
attachDnode();
}
stream.remoteAddress = params.host;
stream.remotePort = params.port;
var args = arguments;
if (params.reconnect) {
stream.on('error', (function (err) {
if (err.code === 'ECONNREFUSED' || err.code === 'ENOENT') {
if (client) client.emit('refused');
setTimeout((function () {
if (client) client.emit('reconnect');
dnode.prototype.connect.apply(this, args);
}).bind(this), params.reconnect);
}
else if (client) client.emit('error', err)
else this.emit('error', err)
}).bind(this));
stream.once('end', (function () {
if (!params.reconnect) return;
client.emit('drop');
setTimeout((function () {
if (!params.reconnect) return;
client.emit('reconnect');
dnode.prototype.connect.apply(this, args);
}).bind(this), params.reconnect);
}).bind(this));
}
else {
stream.on('error', (function (err) {
if (client) client.emit('error', err)
else this.emit('error', err)
}).bind(this));
}
function attachDnode() {
if (!stream) {
self.emit('error', new Error('Could not create a stream with this information ' + JSON.stringify(params)))
return null
}
client = createClient(self.proto, stream);
client.end = function () {
if (params.reconnect) params.reconnect = 0;
stream.end();
};
self.stack.forEach(function (middleware) {
middleware.call(client.instance, client.remote, client);
});
if (params.block) {
client.on('remote', function () {
params.block.call(client.instance, client.remote, client);
});
}
process.nextTick(function () {
if (client.listeners('error').length === 0) {
// default error handler to keep everything from crashing
client.on('error', function (err) {
console.error(err && err.stack || err);
})
}
});
client.start();
};
this.streams.push(stream);
return this;
};
dnode.prototype.listen = function () {
var self = this;
var params = protocol.parseArgs(arguments);
var server = params.server;
if (params.port) {
if (params.key) {
var options = {
key: params.key,
cert: params.cert,
ca: params.ca,
requestCert: params.requestCert,
rejectUnauthorized: params.rejectUnauthorized
};
server = tls.createServer(options);
server.on('error', this.emit.bind(this, 'error'));
if (params.host) {
server.listen(
params.port, params.host,
this.emit.bind(this, 'ready')
);
}
else {
server.listen(
params.port,
this.emit.bind(this, 'ready')
);
}
}
else {
server = net.createServer();
server.on('error', this.emit.bind(this, 'error'));
server.listen(
params.port, params.host,
this.emit.bind(this, 'ready')
);
}
}
else if (params.path) {
server = net.createServer();
server.on('error', this.emit.bind(this, 'error'));
server.listen(
params.path,
this.emit.bind(this, 'ready')
);
}
else if (server && (
server instanceof http.Server
|| server.hasOwnProperty('httpAllowHalfOpen')
|| params.webserver
)) {
// a webserver, use socket.io
server = SocketIO(
server || params.webserver,
params.mount === undefined ? '/dnode.js' : params.mount,
params.io || {}
);
}
if (!server) {
this.emit('error', new Error('Not sure how to fire up this listener'));
}
var clients = {};
var listenFor = server instanceof tls.Server
? 'secureConnection'
: 'connection'
;
server.on(listenFor, function (stream) {
var client = createClient(self.proto, stream);
clients[client.id] = client;
self.stack.forEach(function (middleware) {
middleware.call(client.instance, client.remote, client);
});
if (params.block) {
client.on('remote', function () {
params.block.call(client.instance, client.remote, client);
});
}
client.start();
});
this.server = server;
server.on('close', this.emit.bind(this, 'close'));
return this;
};
function createClient (proto, stream) {
var client = proto.create();
process.nextTick(function () {
if (client.listeners('error').length === 0) {
// default error handler to keep everything from crashing
client.on('error', function (err) {
console.error(err && err.stack || err);
})
}
});
client.stream = stream;
client.end = stream.end.bind(stream);
client.destroy = stream.destroy.bind(stream);
stream.on('end', client.emit.bind(client, 'end'));
stream.on('disconnect', client.emit.bind(client, 'disconnect'));
stream.on('close', client.emit.bind(client, 'close'));
client.on('request', function (req) {
if (stream.writable) {
stream.write(JSON.stringify(req) + '\n');
}
else {
client.emit('dropped', req);
}
});
Lazy(stream).lines
.map(String)
.forEach(client.parse)
;
return client;
}
dnode.prototype.end = function () {
Object.keys(this.proto.sessions)
.forEach((function (id) {
this.proto.sessions[id].stream.end()
}).bind(this))
;
this.emit('end');
};
dnode.prototype.close = function () {
var self = this
try {
self.server.close();
}
catch (e) {
if (e.message === 'Not running') {
self.server.emit('close');
}
else {
self.server.emit('error', e);
}
}
};
dnode.connect = function () {
var d = dnode();
return d.connect.apply(d, arguments);
};
dnode.listen = function () {
var d = dnode();
return d.listen.apply(d, arguments);
};