forked from kyma-project/kyma
/
main.go
70 lines (55 loc) · 1.54 KB
/
main.go
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package main
import (
"context"
"fmt"
"log"
"net/http"
"os"
"os/signal"
"syscall"
"github.com/Bplotka/go-httplog"
"github.com/Bplotka/go-httplog/logrus"
"github.com/sirupsen/logrus"
"github.com/vrischmann/envconfig"
)
type Config struct {
// RemoteEnvironmentServerPort is a port used by this gateway to listen on requests incoming from services.
RemoteEnvironmentServerPort int `envconfig:"default=8080"`
}
type httpHandler struct {
Cfg Config
}
func (h *httpHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
fmt.Fprintf(w, "remote environment gateway, name: %s\n", r.URL.Path[1:])
fmt.Fprintln(w, "- server: req headers")
for k, v := range r.Header {
fmt.Fprintf(w, "-- %s => %s\n", k, v)
}
}
func main() {
var cfg Config
if err := envconfig.Init(&cfg); err != nil {
panic(err)
}
l := logrus.New()
l.Infof("Starting server, port: %d", cfg.RemoteEnvironmentServerPort)
h := &httpHandler{
Cfg: cfg,
}
mux := http.NewServeMux()
mux.Handle("/", h)
loggedHandler := httplog.RegisterMiddleware(
httplogrus.ToHTTPFieldLoggerInfo(l),
httplog.DefaultReqResConfig(),
)(http.HandlerFunc(mux.ServeHTTP))
listenOn := fmt.Sprintf(":%d", cfg.RemoteEnvironmentServerPort)
httpServer := http.Server{Addr: listenOn, Handler: loggedHandler}
go func() {
log.Fatal(httpServer.ListenAndServe())
}()
signalChan := make(chan os.Signal, 1)
signal.Notify(signalChan, syscall.SIGINT, syscall.SIGTERM)
<-signalChan
l.Infoln("Shutdown signal received shutting down gracefully...")
httpServer.Shutdown(context.Background())
}