function _connect(_, cb) {
cb = once(cb);
var client = fast.createClient(opts);
client.on('connectAttempt', function (number, delay) {
var level;
if (number === 0) {
level = 'info';
} else if (number < 5) {
level = 'warn';
} else {
level = 'error';
}
log[level]({ host: opts.host, attempt: number, delay: delay },
'connect attempted');
});
client.once('connect', function onConnect() {
client.removeAllListeners('error');
cb(null, client);
});
client.once('error', function onConnectError(err) {
client.removeAllListeners('connect');
cb(err);
});
}
create : function(callback) {
var RPCclient = fast.createClient({host: host, port: parseInt(RPCport),retry:{retries:1},connectTimeout:500});
// parameter order: err, resource
// new in 1.0.6
RPCclient.on('connect', function () {
console.log('API ' + ' RPC@' + uri + '> Connected!');
callback(null, RPCclient);
});
RPCclient.on('error', function (err) {
console.log('TCP-RPC Pool Connection ' + ' RPC@' + host + ':'+ RPCport + '>',err);
callback("connection Error");
});
},
ConnectionPool.prototype.addHost = function addHost(host) {
if (this.closed) {
return;
}
var self = this;
var cRing = new Ring({
priorityFunc: leastRequestsPriority
});
this.ring.add(host, cRing);
cRing.on('online', function () {
self.log.debug({host: host}, 'host online');
self.ring.activate(host);
});
cRing.on('offline', function () {
self.log.debug({host: host}, 'host offline');
self.ring.deactivate(host);
});
// setup ring of connections
for (var i = 0; i < this.max; i++) {
var key = '' + i;
// FIXME: tune defaults
var client = fast.createClient({
host: host,
port: this.port,
connectTimeout: this.connectTimeout,
retry: this.retry,
reconnect: true
});
client.log = this.log.child({
fastClient: host + '-' + i
});
cRing.add(key, client);
client.on('connect', cRing.activate.bind(cRing, key));
client.on('close', cRing.deactivate.bind(cRing, key));
client.on('error', this.emit.bind(this, 'error'));
}
};