Add the retrieval of the SAS for a blob

azure_blob_client/__init__.py

@@ -17,6 +17,8 @@ from azure.storage.blob import (
     AccountSasPermissions,
     ContainerClient,
     BlobType,
+    generate_blob_sas,
+    BlobSasPermissions,
 )
 from azure.core.exceptions import ClientAuthenticationError
 
@@ -118,7 +120,7 @@ class AzureBlobClient:
         return self.blob_service_client().delete_container(container=container_name)
 
     def upload_blob_in_container(
-        self, container_name: str, blob_name: str, blob_filename: str, blob_type: BlobType = BlobType.BlockBlob
+            self, container_name: str, blob_name: str, blob_filename: str, blob_type: BlobType = BlobType.BlockBlob
     ):
         """Upload a new blob in the container
 
@@ -145,4 +147,42 @@ class AzureBlobClient:
         :param blob_name: Name of the blob to delete
         :type blob_name: str
         """
-        self.blob_container_client(container_name=container_name).delete_blob(blob=blob_name)
+        self.blob_container_client(container_name=container_name).delete_blob(blob=blob_name)
\ No newline at end of file
+
+    def get_blob_sas_url(self, container_name, blob_name, time_to_expiry=1):
+        """
+        Get the URL of a blob, with the necessary read access
+
+        Args:
+            container_name (str): name of the caontainer
+            blob_name (str): name (path) of the blob in the container
+            time_to_expiry (int): in hours, the time of validity for this access
+
+        Returns:
+            (str): the authorized URL
+        """
+        sas_blob = self.get_blob_sas(container_name=container_name, blob_name=blob_name, time_to_expiry=time_to_expiry)
+        authorized_url = self.account_url + '/' + container_name + '/' + blob_name + '?' + sas_blob
+        return authorized_url
+
+    def get_blob_sas(self, container_name, blob_name, time_to_expiry=1):
+        """
+        Generate a blob SAS, to be able to access it from a standard URL
+
+        Args:
+            container_name (str): name of the caontainer
+            blob_name (str): name (path) of the blob in the container
+            time_to_expiry (int): in hours, the time of validity for this access
+
+        Returns:
+            (str): the SAS of the blob
+        """
+        sas_blob = generate_blob_sas(
+            account_name=self.storage_account,
+            account_key=self.credentials,
+            container_name=container_name,
+            blob_name=blob_name,
+            permission=BlobSasPermissions(read=True),
+            expiry=datetime.utcnow() + timedelta(hours=time_to_expiry))
+
+        return sas_blob