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broker.go
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broker.go
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// Copyright © 2017 The Things Network
// Use of this source code is governed by the MIT license that can be found in the LICENSE file.
package cmd
import (
"fmt"
"io/ioutil"
"net"
"os"
"os/signal"
"syscall"
"time"
"google.golang.org/grpc"
ttnlog "github.com/TheThingsNetwork/go-utils/log"
"github.com/TheThingsNetwork/ttn/core/broker"
"github.com/TheThingsNetwork/ttn/core/component"
"github.com/spf13/cobra"
"github.com/spf13/viper"
)
// brokerCmd represents the broker command
var brokerCmd = &cobra.Command{
Use: "broker",
Short: "The Things Network broker",
Long: ``,
PreRun: func(cmd *cobra.Command, args []string) {
ctx.WithFields(ttnlog.Fields{
"Server": fmt.Sprintf("%s:%d", viper.GetString("broker.server-address"), viper.GetInt("broker.server-port")),
"Announce": fmt.Sprintf("%s:%d", viper.GetString("broker.server-address-announce"), viper.GetInt("broker.server-port")),
"NetworkServer": viper.GetString("broker.networkserver-address"),
"DeduplicationDelay": viper.GetString("broker.deduplication-delay"),
}).Info("Initializing Broker")
},
Run: func(cmd *cobra.Command, args []string) {
ctx.Info("Starting")
// Component
component, err := component.New(ttnlog.Get(), "broker", fmt.Sprintf("%s:%d", viper.GetString("broker.server-address-announce"), viper.GetInt("broker.server-port")))
if err != nil {
ctx.WithError(err).Fatal("Could not initialize component")
}
var nsCert string
if nsCertFile := viper.GetString("broker.networkserver-cert"); nsCertFile != "" {
contents, err := ioutil.ReadFile(nsCertFile)
if err != nil {
ctx.WithError(err).Fatal("Could not get Networkserver certificate")
}
nsCert = string(contents)
}
// Broker
broker := broker.NewBroker(
time.Duration(viper.GetInt("broker.deduplication-delay")) * time.Millisecond,
)
broker.SetNetworkServer(viper.GetString("broker.networkserver-address"), nsCert, viper.GetString("broker.networkserver-token"))
err = broker.Init(component)
if err != nil {
ctx.WithError(err).Fatal("Could not initialize broker")
}
// gRPC Server
lis, err := net.Listen("tcp", fmt.Sprintf("%s:%d", viper.GetString("broker.server-address"), viper.GetInt("broker.server-port")))
if err != nil {
ctx.WithError(err).Fatal("Could not start gRPC server")
}
grpc := grpc.NewServer(component.ServerOptions()...)
// Register and Listen
broker.RegisterRPC(grpc)
broker.RegisterManager(grpc)
component.RegisterHealthServer(grpc) // must be last one
go grpc.Serve(lis)
sigChan := make(chan os.Signal)
signal.Notify(sigChan, os.Interrupt, syscall.SIGTERM)
ctx.WithField("signal", <-sigChan).Info("signal received")
grpc.Stop()
broker.Shutdown()
},
}
func init() {
RootCmd.AddCommand(brokerCmd)
brokerCmd.Flags().String("networkserver-address", "localhost:1903", "Networkserver host and port")
viper.BindPFlag("broker.networkserver-address", brokerCmd.Flags().Lookup("networkserver-address"))
brokerCmd.Flags().String("networkserver-cert", "", "Networkserver certificate to use")
viper.BindPFlag("broker.networkserver-cert", brokerCmd.Flags().Lookup("networkserver-cert"))
brokerCmd.Flags().String("networkserver-token", "", "Networkserver token to use")
viper.BindPFlag("broker.networkserver-token", brokerCmd.Flags().Lookup("networkserver-token"))
brokerCmd.Flags().Int("deduplication-delay", 200, "Deduplication delay (in ms)")
viper.BindPFlag("broker.deduplication-delay", brokerCmd.Flags().Lookup("deduplication-delay"))
brokerCmd.Flags().String("server-address", "0.0.0.0", "The IP address to listen for communication")
brokerCmd.Flags().String("server-address-announce", "localhost", "The public IP address to announce")
brokerCmd.Flags().Int("server-port", 1902, "The port for communication")
viper.BindPFlag("broker.server-address", brokerCmd.Flags().Lookup("server-address"))
viper.BindPFlag("broker.server-address-announce", brokerCmd.Flags().Lookup("server-address-announce"))
viper.BindPFlag("broker.server-port", brokerCmd.Flags().Lookup("server-port"))
}