274 lines
8.5 KiB
Python
274 lines
8.5 KiB
Python
"""Provide service-layer logic for minio client."""
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from minio import Minio
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from minio.error import S3Error
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from typing import Optional, Dict, Any
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from loguru import logger
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from io import BytesIO
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import os
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from app.config.settings import settings
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# Keep service responsibilities explicit so downstream behavior stays predictable.
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class MinIOClient:
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"""Represent the Min I O Client type."""
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def __init__(
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self,
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endpoint: str = None,
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access_key: str = None,
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secret_key: str = None,
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bucket: str = None,
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secure: bool = None
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):
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"""Initialize the Min I O Client instance."""
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self.endpoint = endpoint or settings.minio_endpoint
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self.access_key = access_key or settings.minio_access_key
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self.secret_key = secret_key or settings.minio_secret_key
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self.bucket = bucket or settings.minio_bucket
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self.secure = secure or settings.minio_secure
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self.client: Optional[Minio] = None
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self.connected = False
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logger.info(f"MinIO客户端配置: {self.endpoint}, bucket={self.bucket}")
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def connect(self) -> bool:
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"""Handle connect for the Min I O Client instance."""
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try:
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self.client = Minio(
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self.endpoint,
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access_key=self.access_key,
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secret_key=self.secret_key,
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secure=self.secure
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)
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self.connected = True
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logger.success(f"MinIO连接成功: {self.endpoint}")
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return True
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except Exception as e:
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logger.error(f"MinIO连接失败: {e}")
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self.connected = False
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return False
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def ensure_bucket(self) -> bool:
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"""Handle ensure bucket for the Min I O Client instance."""
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if not self.connected:
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logger.warning("未连接MinIO，请先调用connect()")
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return False
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try:
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if not self.client.bucket_exists(self.bucket):
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self.client.make_bucket(self.bucket)
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logger.success(f"创建存储桶: {self.bucket}")
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else:
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logger.info(f"存储桶已存在: {self.bucket}")
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return True
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except S3Error as e:
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logger.error(f"存储桶操作失败: {e}")
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return False
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def upload_file(
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self,
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file_path: str,
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object_name: str,
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metadata: Dict[str, Any] = None
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) -> bool:
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"""Handle upload file for the Min I O Client instance."""
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if not self.connected:
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self.connect()
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self.ensure_bucket()
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try:
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file_size = os.stat(file_path).st_size
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content_type = self._get_content_type(file_path)
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with open(file_path, 'rb') as f:
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self.client.put_object(
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self.bucket,
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object_name,
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f,
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file_size,
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content_type=content_type,
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metadata=metadata
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)
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logger.success(f"文件上传成功: {object_name}, 大小={file_size}")
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return True
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except S3Error as e:
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logger.error(f"文件上传失败: {e}")
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return False
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def upload_bytes(
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self,
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data: bytes,
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object_name: str,
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content_type: str = "application/octet-stream",
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metadata: Dict[str, Any] = None
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) -> bool:
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"""Handle upload bytes for the Min I O Client instance."""
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if not self.connected:
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self.connect()
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self.ensure_bucket()
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try:
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data_stream = BytesIO(data)
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# Keep service responsibilities explicit so downstream behavior stays predictable.
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safe_metadata = None
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if metadata:
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safe_metadata = {}
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for key, value in metadata.items():
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if isinstance(value, str):
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# Keep service responsibilities explicit so downstream behavior stays predictable.
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try:
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value.encode('ascii')
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safe_metadata[key] = value
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except UnicodeEncodeError:
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# Keep service responsibilities explicit so downstream behavior stays predictable.
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safe_metadata[key] = ""
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else:
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safe_metadata[key] = str(value)
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self.client.put_object(
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self.bucket,
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object_name,
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data_stream,
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len(data),
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content_type=content_type,
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metadata=safe_metadata
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)
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logger.success(f"数据上传成功: {object_name}, 大小={len(data)}")
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return True
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except S3Error as e:
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logger.error(f"数据上传失败: {e}")
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return False
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def download_file(
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self,
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object_name: str,
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file_path: str
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) -> bool:
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"""Handle download file for the Min I O Client instance."""
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if not self.connected:
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self.connect()
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try:
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self.client.fget_object(
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self.bucket,
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object_name,
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file_path
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)
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logger.success(f"文件下载成功: {object_name} -> {file_path}")
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return True
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except S3Error as e:
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logger.error(f"文件下载失败: {e}")
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return False
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def get_object_url(
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self,
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object_name: str,
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expires: int = 3600
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) -> Optional[str]:
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"""Return object url for the Min I O Client instance."""
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if not self.connected:
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self.connect()
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try:
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url = self.client.presigned_get_object(
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self.bucket,
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object_name,
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expires=expires
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)
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return url
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except S3Error as e:
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logger.error(f"获取URL失败: {e}")
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return None
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def get_object_data(self, object_name: str) -> Optional[bytes]:
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"""Return object data for the Min I O Client instance."""
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if not self.connected:
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self.connect()
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try:
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response = self.client.get_object(self.bucket, object_name)
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data = response.read()
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response.close()
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response.release_conn()
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return data
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except S3Error as e:
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logger.error(f"获取对象数据失败: {e}")
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return None
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def delete_object(self, object_name: str) -> bool:
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"""Delete object for the Min I O Client instance."""
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if not self.connected:
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self.connect()
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try:
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self.client.remove_object(self.bucket, object_name)
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logger.info(f"对象删除成功: {object_name}")
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return True
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except S3Error as e:
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logger.error(f"对象删除失败: {e}")
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return False
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def list_objects(self, prefix: str = "") -> list:
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"""List objects for the Min I O Client instance."""
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if not self.connected:
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self.connect()
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try:
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objects = self.client.list_objects(self.bucket, prefix=prefix)
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return [obj.object_name for obj in objects]
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except S3Error as e:
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logger.error(f"列出对象失败: {e}")
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return []
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def object_exists(self, object_name: str) -> bool:
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"""Handle object exists for the Min I O Client instance."""
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if not self.connected:
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self.connect()
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try:
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self.client.stat_object(self.bucket, object_name)
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return True
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except S3Error:
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return False
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def _get_content_type(self, file_path: str) -> str:
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"""Handle get content type for this module for the Min I O Client instance."""
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ext = os.path.splitext(file_path)[1].lower()
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content_types = {
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'.pdf': 'application/pdf',
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'.doc': 'application/msword',
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'.docx': 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
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'.txt': 'text/plain',
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'.json': 'application/json',
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'.xml': 'application/xml',
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}
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return content_types.get(ext, 'application/octet-stream')
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def close(self):
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"""Release the resources held by this component."""
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self.connected = False
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logger.info("MinIO客户端已关闭")
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def create_minio_client() -> MinIOClient:
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"""Create minio client."""
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client = MinIOClient()
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client.connect()
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client.ensure_bucket()
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return client
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