add middlewares

pkgs/middleware/recover/recover.go

@@ -0,0 +1,25 @@
+package recover
+
+import (
+	"fmt"
+	"net/http"
+
+	"git.jeffthecoder.xyz/guochao/cache-proxy/pkgs/middleware/httplog"
+)
+
+func recoverer(w http.ResponseWriter, r *http.Request) {
+	if err := recover(); err != nil {
+		httplog.Logger(r).With("error", err).Error("request panicked")
+		http.Error(w, fmt.Sprint(err), http.StatusInternalServerError)
+	}
+}
+
+func Recover() func(http.Handler) http.Handler {
+	return func(next http.Handler) http.Handler {
+		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			defer recoverer(w, r)
+
+			next.ServeHTTP(w, r)
+		})
+	}
+}