// NewClient creates a new Lever Client.
func NewClient() (*Client, error) {
conns, err := scale.NewGRPCPool()
if err != nil {
return nil, err
}
return &Client{conns: conns}, nil
}
func main() {
config.Initialize()
leverutil.UpdateLoggingSettings()
logger.WithFields(
"version", Version,
"gitHash", GitHash,
).Info("Starting up...")
_, err := devlogger.NewDevLogger(ExternalIPFlag.Get())
if err != nil {
logger.WithFields("err", err).Fatal("Cannot start devlogger")
}
// Docker.
dockerLocal := dockerutil.NewDockerLocal()
dockerSwarm := dockerutil.NewDockerSwarm()
// Own regional IP.
ownIP, err := dockerutil.GetOwnEnvIPv4(
dockerLocal, hostman.RegionalNetworkFlag.Get())
if err != nil {
logger.WithFields("err", err).Fatal("Error getting own regional IPv4")
}
// Own GRPC address.
grpcAddr := ownIP + ":" + InternalGRPCListenPortFlag.Get()
// Start internal GRPC server.
listener, err := net.Listen("tcp", grpcAddr)
if err != nil {
logger.WithFields(
"err", err,
"listenAddr", grpcAddr,
).Fatal("Could not start listening")
}
grpcServer := grpc.NewServer()
// GRPC client pool.
grpcPool, err := scale.NewGRPCPool()
if err != nil {
logger.WithFields("err", err).Fatal("Cannot create GRPC pool")
}
// Start finder.
as, err := store.NewAerospike()
if err != nil {
logger.WithFields("err", err).Fatal("Cannot get aerospike client")
}
finder := host.NewFinder(dockerSwarm, as)
// Start host manager.
proxyInAddr := ownIP + ":" + host.EnvInListenPortFlag.Get()
manager, err := hostman.NewManager(
grpcServer, grpcPool, dockerLocal, grpcAddr, proxyInAddr)
if err != nil {
logger.WithFields("err", err).Fatal("Cannot create host manager")
}
// Start proxy.
_, err = host.NewLeverProxy(manager, finder, ownIP, grpcPool)
if err != nil {
logger.WithFields("err", err).Fatal("Cannot create Lever proxy")
}
// Start fleettracker.
_, err = fleettracker.NewFleetTracker(
grpcServer, grpcPool, dockerSwarm, grpcAddr)
if err != nil {
logger.WithFields("err", err).Fatal("Error starting fleettracker")
}
// Start API server.
_, err = apiserver.NewServer()
if err != nil {
logger.WithFields("err", err).Fatal("Error starting API server")
}
logger.Info("\n" +
" _ ___ ___ \n" +
" | | _____ _____ _ _ / _ \\/ __|\n" +
" | |__/ -_) V / -_) '_| | (_) \\__ \\\n" +
" |____\\___|\\_/\\___|_| \\___/|___/\n" +
" v" + Version + "\n" +
" Ready to serve\n")
// GRPC enter loop.
err = grpcServer.Serve(listener)
if err != nil {
logger.WithFields("err", err).Fatal("Error in internal GRPC server")
}
// TODO: Ideally we should trap signals and shut down properly.
}
