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main.go
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main.go
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package main
import (
"context"
"errors"
"flag"
"net/http"
"os"
"os/signal"
"syscall"
"github.com/doppiolab/mcman/internal/config"
"github.com/doppiolab/mcman/internal/logstream"
"github.com/doppiolab/mcman/internal/logstream/callback"
"github.com/doppiolab/mcman/internal/minecraft"
"github.com/doppiolab/mcman/internal/server"
"github.com/rs/zerolog"
"github.com/rs/zerolog/log"
)
var (
configFileName = flag.String("config", "default.yaml", "config file name")
)
var (
McManVersion string
)
func main() {
flag.Parse()
cfg := config.MustGetConfig(*configFileName)
// logger config
zerolog.SetGlobalLevel(zerolog.InfoLevel)
if cfg.Server.Debug {
log.Logger = log.With().Caller().Logger()
zerolog.SetGlobalLevel(zerolog.DebugLevel)
log.Debug().Msg("debug mode is enabled")
}
log.Info().Str("config-file", *configFileName).Msg("start mcman")
// launch minecraft server
mcsvr, err := minecraft.NewServer(&cfg.Minecraft)
if err != nil {
log.Fatal().Err(err).Msg("failed to create minecraft server")
}
stdout, stderr, err := mcsvr.Start()
if err != nil {
log.Fatal().Err(err).Msg("cannot start minecraft server")
}
log.Info().Msg("started minecraft server")
// launch log stream
logStream := logstream.New(&cfg.Minecraft.LogWebhook, map[string]chan string{"stdout": stdout, "stderr": stderr})
logStream.RegisterLogCallback("webhook", callback.NewWebhookCallback(&cfg.Minecraft.LogWebhook))
logStream.RegisterLogCallback("zerolog", callback.NewLogCallback(log.With().Str("from", "mc-server").Logger()))
logStream.Start()
// launch server
if _, err := os.Stat(cfg.Server.TemporaryPath); errors.Is(err, os.ErrNotExist) {
err := os.Mkdir(cfg.Server.TemporaryPath, os.ModePerm)
if err != nil {
log.Fatal().Err(err).Msg("failed to create temporary directory")
}
}
svr, err := server.New(&cfg.Server, mcsvr, cfg.Minecraft.WorkingDir, logStream, McManVersion)
if err != nil {
log.Fatal().Err(err).Msg("failed to create server")
}
go (func() {
log.Info().Msgf("start to listen on http://%s/", svr.Addr)
if err := svr.ListenAndServe(); err != nil && !errors.Is(err, http.ErrServerClosed) {
log.Error().Err(err).Msg("cannot serve http server")
}
})()
// wait for shutdown
quit := make(chan os.Signal, 1)
signal.Notify(quit, syscall.SIGINT, syscall.SIGTERM)
defer signal.Stop(quit)
<-quit
// graceful shutdown
log.Info().Msg("stopping http server")
ctx := context.Background()
if err := svr.Shutdown(ctx); err != nil {
log.Error().Err(err).Msg("cannot shutdown gateway server")
}
log.Info().Msg("stopping minecraft server")
if err := mcsvr.Stop(); err != nil {
log.Error().Err(err).Msg("cannot stop minecraft server")
}
log.Info().Msg("stopping log stream for minecraft server")
logStream.Stop()
}