Geoff Bourne
110 lines
2.6 KiB
Go
110 lines
2.6 KiB
Go
package main
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import (
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"context"
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"flag"
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"fmt"
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"github.com/itzg/mc-router/server"
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"github.com/sirupsen/logrus"
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"net"
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"os"
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"os/signal"
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"runtime/pprof"
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"strconv"
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"strings"
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)
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var (
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port = flag.Int("port", 25565, "The port bound to listen for Minecraft client connections")
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apiBinding = flag.String("api-binding", "", "The host:port bound for servicing API requests")
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mappings = flag.String("mapping", "", "Comma-separated mappings of externalHostname=host:port")
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versionFlag = flag.Bool("version", false, "Output version and exit")
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kubeConfigFile = flag.String("kube-config", "", "The path to a kubernetes configuration file")
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inKubeCluster = flag.Bool("in-kube-cluster", false, "Use in-cluster kubernetes config")
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cpuProfile = flag.String("cpu-profile", "", "Enables CPU profiling and writes to given path")
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)
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var (
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version = "dev"
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commit = "none"
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date = "unknown"
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)
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func showVersion() {
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fmt.Printf("%v, commit %v, built at %v", version, commit, date)
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}
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func main() {
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flag.Parse()
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if *versionFlag {
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showVersion()
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os.Exit(0)
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}
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if *cpuProfile != "" {
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cpuProfileFile, err := os.Create(*cpuProfile)
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if err != nil {
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logrus.WithError(err).Fatal("trying to create cpu profile file")
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}
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logrus.WithField("file", cpuProfileFile).Info("Starting cpu profiling")
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err = pprof.StartCPUProfile(cpuProfileFile)
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if err != nil {
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logrus.WithError(err).Fatal("trying to start cpu profile")
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}
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defer pprof.StopCPUProfile()
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}
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ctx, cancel := context.WithCancel(context.Background())
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c := make(chan os.Signal, 1)
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signal.Notify(c, os.Interrupt)
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server.Routes.RegisterAll(parseMappings(*mappings))
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server.Connector.StartAcceptingConnections(ctx, net.JoinHostPort("", strconv.Itoa(*port)))
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if *apiBinding != "" {
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server.StartApiServer(*apiBinding)
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}
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var err error
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if *inKubeCluster {
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err = server.K8sWatcher.StartInCluster()
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if err != nil {
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logrus.WithError(err).Warn("Unable to start k8s integration")
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} else {
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defer server.K8sWatcher.Stop()
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}
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} else if *kubeConfigFile != "" {
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err := server.K8sWatcher.StartWithConfig(*kubeConfigFile)
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if err != nil {
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logrus.WithError(err).Warn("Unable to start k8s integration")
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} else {
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defer server.K8sWatcher.Stop()
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}
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}
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<-c
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logrus.Info("Stopping")
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cancel()
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}
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func parseMappings(val string) map[string]string {
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result := make(map[string]string)
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if val != "" {
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parts := strings.Split(val, ",")
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for _, part := range parts {
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keyValue := strings.Split(part, "=")
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if len(keyValue) == 2 {
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result[keyValue[0]] = keyValue[1]
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} else {
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logrus.WithField("part", part).Fatal("Invalid part of mapping")
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}
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}
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}
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return result
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}
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