init

core/objects/blob_object.py

@@ -0,0 +1,70 @@
+"""
+********************************************
+* @Date: 2024 09 27
+* @Description: BlobObject存储对象
+********************************************
+"""
+
+import hashlib
+import os
+import zlib
+
+
+class BlobObject:
+    object_id: str
+    __buff_size: int = 8192
+
+    def __init__(self, file_path: str) -> None:
+        self.file_path = file_path
+        self.object_id = self.contentSha1()
+
+    def writeBlob(self, base_path) -> None:
+        Folder = base_path + "/" + self.__getFolderName()
+        if not os.path.exists(Folder):
+            os.makedirs(Folder)
+        self.__compressFile(
+            self.file_path,
+            base_path + "/" + self.__getFolderName() + "/" + self.__getFileName(),
+        )
+
+    def __compressFile(self, file_path, save_path) -> None:
+        compresser = zlib.compressobj(9)
+        write_file = open(save_path, "wb")
+        with open(file_path, "rb") as f:
+            while True:
+                data = f.read(self.__buff_size)
+                if not data:
+                    break
+                compressedData = compresser.compress(data)
+                write_file.write(compressedData)
+            write_file.write(compresser.flush())
+            write_file.close()
+
+    def __getFolderName(self) -> str:
+        return self.object_id[:2]
+
+    def __getFileName(self) -> str:
+        return self.object_id[2:]
+
+    def getBlobAbsPath(self) -> str:
+        """
+        获取blob的绝对路径,此相对路径是基于存储路径的,不是相对当前文件的路径
+
+        :return 相对路径,格式为xx/xxxx...
+        """
+        return self.__getFolderName() + "/" + self.__getFileName()
+
+    def contentSha1(self) -> str:
+        """
+        计算文件内容的sha1值
+
+        :return sha1的hex值
+        """
+        with open(self.file_path, "rb") as f:
+            sha1 = hashlib.sha1()
+            while True:
+                data = f.read(self.__buff_size)
+                if not data:
+                    break
+                sha1.update(data)
+            return sha1.hexdigest()