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
 
@@ -146,3 +148,41 @@ class AzureBlobClient:
         :type blob_name: str
         """
         self.blob_container_client(container_name=container_name).delete_blob(blob=blob_name)
+
+    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