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package main
import (
"context"
"flag"
"log"
"net/http"
"os"
"os/signal"
"github.com/go-chi/chi/v5"
"github.com/go-chi/chi/v5/middleware"
"github.com/go-chi/httplog"
"golang.org/x/sync/errgroup"
badger "github.com/dgraph-io/badger/v3"
"go.neonxp.dev/djson/internal/config"
"go.neonxp.dev/djson/internal/core"
"go.neonxp.dev/djson/internal/events"
"go.neonxp.dev/djson/internal/handler"
"go.neonxp.dev/djson/internal/logger"
)
var configFile = flag.String("config", "/etc/djson/config.json", "Path to config file")
func main() {
flag.Parse()
ctx, cancel := signal.NotifyContext(context.Background(), os.Interrupt, os.Kill)
defer cancel()
cfg, err := config.Parse(*configFile)
if err != nil {
panic(err)
}
baseLogger := httplog.NewLogger("djson", httplog.Options{
JSON: true,
LogLevel: cfg.Log.Level,
})
appLogger := logger.Logger{
Logger: baseLogger,
}
dbOpts := badger.DefaultOptions(cfg.DB)
dbOpts.Logger = appLogger
db, err := badger.Open(dbOpts)
if err != nil {
log.Fatal(err)
}
defer db.Close()
eventsDispatcher := events.New()
// Tree core
core := core.New(db)
if err := core.Init(ctx); err != nil {
log.Fatal(err)
}
// Tree HTTP wrapper
treeHandler := handler.New(core, eventsDispatcher)
// HTTP router
r := chi.NewRouter()
r.Use(httplog.RequestLogger(appLogger.Logger))
r.Use(middleware.RequestID)
r.Use(middleware.RealIP)
r.Use(middleware.Recoverer)
r.Get("/health", treeHandler.Hearthbeat)
r.Route("/tree", treeHandler.HandleCRUD)
r.Route("/events", treeHandler.HandleEvents)
server := &http.Server{
Addr: cfg.Listen,
Handler: r,
}
eg, ctx := errgroup.WithContext(ctx)
eg.Go(func() error {
appLogger.Info().Str("server listen", cfg.Listen).Send()
if err := server.ListenAndServe(); err != http.ErrServerClosed {
return err
}
return nil
})
eg.Go(func() error {
<-ctx.Done()
db.Close()
return server.Close()
})
if err := eg.Wait(); err != nil {
panic(err)
}
}
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