refactor: структура Go — main.go 91стр, handlers/proxy/router_versions/docs/gpg_key

server/proxy.go

@@ -0,0 +1,55 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"io"
+	"log"
+	"net/http"
+	"strings"
+	"time"
+
+	s3 "github.com/minio/minio-go/v7"
+)
+
+func proxyHandler(w http.ResponseWriter, r *http.Request) {
+	key := r.URL.Query().Get("key")
+
+	if key == "" {
+		http.Error(w, "Missing key param", http.StatusBadRequest)
+		return
+	}
+	if !strings.HasPrefix(key, s3Prefix+"/") && !strings.HasPrefix(key, "docs/") {
+		http.Error(w, "Forbidden", http.StatusForbidden)
+		return
+	}
+
+	ctx, cancel := context.WithTimeout(r.Context(), 60*time.Second)
+	defer cancel()
+
+	obj, err := s3Client.GetObject(ctx, bucketName, key, s3.GetObjectOptions{})
+	if err != nil {
+		log.Printf("Error getting object %s/%s: %v", bucketName, key, err)
+		http.Error(w, "File not found", http.StatusNotFound)
+		return
+	}
+	defer obj.Close()
+
+	stat, err := obj.Stat()
+	if err != nil {
+		log.Printf("Error stating object %s/%s: %v", bucketName, key, err)
+		http.Error(w, "File not found or not accessible", http.StatusNotFound)
+		return
+	}
+
+	w.Header().Set("Content-Length", fmt.Sprintf("%d", stat.Size))
+	w.Header().Set("Content-Type", "application/octet-stream")
+	w.Header().Set("Last-Modified", stat.LastModified.Format(http.TimeFormat))
+
+	written, err := io.Copy(w, obj)
+	if err != nil {
+		log.Printf("Error streaming object: %v (sent %d/%d bytes)", err, written, stat.Size)
+	} else {
+		log.Printf("Proxy: sent %d bytes for %s", written, key)
+	}
+}