feature/implementacion de gestor de informacion y archivos minIO

api/utils/minio_client.py

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+# backend/utils/minio_client.py
+from datetime import timedelta
+import os
+from minio import Minio
+from minio.error import S3Error
+from django.conf import settings
+from typing import Optional, BinaryIO
+import logging
+
+logger = logging.getLogger(__name__)
+
+
+class MinIOClient:
+    """Cliente singleton para MinIO con operaciones avanzadas"""
+    
+    _instance = None
+    _client = None
+    _bucket_name = None
+
+    def __new__(cls):
+        if cls._instance is None:
+            cls._instance = super().__new__(cls)
+        return cls._instance
+    
+    def __init__(self):
+        if self._client is None and settings.STORAGE_BACKEND == 'minio':
+            self._initialize_client()
+    
+    def _initialize_client(self):
+        """Inicializa el cliente de MinIO"""
+        try:
+            endpoint = os.getenv('MINIO_ENDPOINT', 'minio:9000')
+            access_key = os.getenv('MINIO_ACCESS_KEY')
+            secret_key = os.getenv('MINIO_SECRET_KEY')
+            secure = os.getenv('MINIO_SECURE', 'false').lower() == 'true'
+            
+            self._client = Minio(
+                endpoint=endpoint,
+                access_key=access_key,
+                secret_key=secret_key,
+                secure=secure
+            )
+
+            self._bucket_name = os.environ.get('MINIO_BUCKET_NAME', 'efc-backend-dev')
+            
+            # Asegurar que el bucket existe
+            if not self._client.bucket_exists(self._bucket_name):
+                self._client.make_bucket(self._bucket_name)
+                
+        except Exception as e:
+            raise
+    
+    def upload_file(
+        self, 
+        object_name: str, 
+        file_path: str = None, 
+        file_data: BinaryIO = None,
+        content_type: str = None,
+        metadata: dict = None
+    ) -> bool:
+        """
+        Sube un archivo a MinIO
+        
+        Args:
+            object_name: Ruta del objeto en el bucket (ej: 'documents/archivo.xml')
+            file_path: Ruta local del archivo (opcional)
+            file_data: Datos del archivo en memoria (opcional)
+            content_type: MIME type del archivo
+            metadata: Metadatos adicionales
+        
+        Returns:
+            bool: True si se subió correctamente
+        """
+        try:
+            if file_path:
+                self._client.fput_object(
+                    bucket_name=self._bucket_name,
+                    object_name=object_name,
+                    file_path=file_path,
+                    content_type=content_type,
+                    metadata=metadata
+                )
+            elif file_data:
+                self._client.put_object(
+                    bucket_name=self._bucket_name,
+                    object_name=object_name,
+                    data=file_data,
+                    length=-1,
+                    part_size=10*1024*1024,  # 10MB
+                    content_type=content_type,
+                    metadata=metadata
+                )
+            else:
+                raise ValueError("You must provide file_path or file_data")
+            
+            return True
+            
+        except S3Error as e:
+            return False
+    
+    def get_file_url(self, object_name: str, expires: int = 3600) -> Optional[str]:
+        """Genera una URL firmada para acceder al archivo"""
+        try:
+            url = self._client.presigned_get_object(
+                bucket_name=self._bucket_name,
+                object_name=object_name,
+                expires=timedelta(seconds=expires)
+            )
+            
+            # Reemplazar endpoint interno por público si está configurado
+            public_endpoint = os.getenv('MINIO_PUBLIC_ENDPOINT')
+            if public_endpoint and url:
+                internal_endpoint = os.getenv('MINIO_ENDPOINT', 'minio:9000')
+                url = url.replace(internal_endpoint, public_endpoint)
+            
+            return url
+        except S3Error as e:
+            return None
+    
+    def delete_file(self, object_name: str) -> bool:
+        """Elimina un archivo del bucket"""
+        try:
+            self._client.remove_object(
+                bucket_name=self._bucket_name,
+                object_name=object_name
+            )
+            return True
+        except S3Error as e:
+            return False
+    
+    def file_exists(self, object_name: str) -> bool:
+        """Verifica si un archivo existe en el bucket"""
+        try:
+            self._client.stat_object(
+                bucket_name=self._bucket_name,
+                object_name=object_name
+            )
+            return True
+        except S3Error:
+            return False
+
+# Singleton para uso global
+minio_client = MinIOClient()