func NewClient(server string, requestTimeout int) *client {
context, _ := zmq.NewContext()
self := &client{
server: server,
context: context,
timeout: 2500 * time.Millisecond,
requestTimeout: time.Duration(requestTimeout) * time.Millisecond,
}
self.connect()
return self
}
func main() {
context, _ := zmq.NewContext()
socket, _ := context.NewSocket(zmq.REP)
socket.Bind("tcp://127.0.0.1:5000")
socket.Bind("tcp://127.0.0.1:6000")
for {
msg, _ := socket.Recv(0)
println("Got", string(msg))
socket.Send(msg, 0)
}
}
func main() {
context, _ := zmq.NewContext()
socket, _ := context.NewSocket(zmq.REQ)
socket.Connect("tcp://127.0.0.1:5000")
socket.Connect("tcp://127.0.0.1:6000")
for i := 0; i < 10; i++ {
msg := fmt.Sprintf("msg %d", i)
socket.Send([]byte(msg), 0)
println("Sending", msg)
socket.Recv(0)
}
}
func NewWorker(broker, service string, verbose bool) Worker {
context, _ := zmq.NewContext()
self := &lbWorker{
broker: broker,
context: context,
service: service,
verbose: verbose,
heartbeat: 2500 * time.Millisecond,
liveness: 0,
reconnect: 2500 * time.Millisecond,
}
self.reconnectToBroker()
return self
}
func NewLoadBalancer(frontendEndpoint, backendEndpoint string) *loadBalancer {
context, _ := zmq.NewContext()
// Define inproc socket to talk with HTTP CLient API
frontend, _ := context.NewSocket(zmq.ROUTER)
frontend.SetLinger(0)
frontend.Bind(frontendEndpoint)
// Define tcp socket to talk with Workers
backend, _ := context.NewSocket(zmq.ROUTER)
backend.SetLinger(0)
backend.Bind(backendEndpoint)
return &loadBalancer{
context: context,
heartbeatAt: time.Now().Add(HEARTBEAT_INTERVAL),
services: make(map[string]*lbService),
frontend: frontend,
backend: backend,
waiting: NewList(),
workers: make(map[string]*lbWorker),
chains: make(map[string]lbChain),
}
}