将flask改成fastapi

rag/utils/azure_sas_conn.py

@@ -0,0 +1,95 @@
+#
+#  Copyright 2025 The InfiniFlow Authors. All Rights Reserved.
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+#
+
+import logging
+import os
+import time
+from io import BytesIO
+from rag import settings
+from rag.utils import singleton
+from azure.storage.blob import ContainerClient
+
+
+@singleton
+class RAGFlowAzureSasBlob:
+    def __init__(self):
+        self.conn = None
+        self.container_url = os.getenv('CONTAINER_URL', settings.AZURE["container_url"])
+        self.sas_token = os.getenv('SAS_TOKEN', settings.AZURE["sas_token"])
+        self.__open__()
+
+    def __open__(self):
+        try:
+            if self.conn:
+                self.__close__()
+        except Exception:
+            pass
+
+        try:
+            self.conn = ContainerClient.from_container_url(self.container_url + "?" + self.sas_token)
+        except Exception:
+            logging.exception("Fail to connect %s " % self.container_url)
+
+    def __close__(self):
+        del self.conn
+        self.conn = None
+
+    def health(self):
+        _bucket, fnm, binary = "txtxtxtxt1", "txtxtxtxt1", b"_t@@@1"
+        return self.conn.upload_blob(name=fnm, data=BytesIO(binary), length=len(binary))
+
+    def put(self, bucket, fnm, binary):
+        for _ in range(3):
+            try:
+                return self.conn.upload_blob(name=fnm, data=BytesIO(binary), length=len(binary))
+            except Exception:
+                logging.exception(f"Fail put {bucket}/{fnm}")
+                self.__open__()
+                time.sleep(1)
+
+    def rm(self, bucket, fnm):
+        try:
+            self.conn.delete_blob(fnm)
+        except Exception:
+            logging.exception(f"Fail rm {bucket}/{fnm}")
+
+    def get(self, bucket, fnm):
+        for _ in range(1):
+            try:
+                r = self.conn.download_blob(fnm)
+                return r.read()
+            except Exception:
+                logging.exception(f"fail get {bucket}/{fnm}")
+                self.__open__()
+                time.sleep(1)
+        return
+
+    def obj_exist(self, bucket, fnm):
+        try:
+            return self.conn.get_blob_client(fnm).exists()
+        except Exception:
+            logging.exception(f"Fail put {bucket}/{fnm}")
+        return False
+
+    def get_presigned_url(self, bucket, fnm, expires):
+        for _ in range(10):
+            try:
+                return self.conn.get_presigned_url("GET", bucket, fnm, expires)
+            except Exception:
+                logging.exception(f"fail get {bucket}/{fnm}")
+                self.__open__()
+                time.sleep(1)
+        return