Updated Azure SDK version and refactoring

Author: alfonsof

Diff for: azureblobstoragelist/README.md

@@ -2,7 +2,7 @@
 
 This folder contains a Python application example that handles Blob storage on Microsoft Azure.
 
-List the blobs in a Blob Storage container in an Azure storage account.
+List information about the blobs in a Blob Storage container in an Azure storage account.
 
 ## Requirements
 
@@ -14,12 +14,12 @@ List the blobs in a Blob Storage container in an Azure storage account.
   * Python 3
   * Azure SDKs for Python
 
-* Install the Azure SDKs for Python.
+* You install individual Azure library packages on a per-project basis depending on your needs. It is recommended using Python virtual environments for each project. There is no standalone "SDK" installer for Python.
 
-  Install the latest stable version (supports Python 2.7 and 3.x) via pip:
+* Install the specified python packages.
 
   ```bash
-  pip install azure
+  pip install -r requirements.txt
   ```
 
 ## Using the code
@@ -80,7 +80,7 @@ List the blobs in a Blob Storage container in an Azure storage account.
   2. Select the `Subscription` in which you want to create the new storage account.
   3. Select the `Resource Group` for your storage account.
   4. Enter a `name` for your storage account.
-  5. Select the `Region` for your storage account. 
+  5. Select the `Region` for your storage account.
   6. Select the `Performance` to be used.
   7. Select the `Redundancy` to be used.
   8. Click `Create` to create the storage account.
@@ -95,26 +95,24 @@ List the blobs in a Blob Storage container in an Azure storage account.
   
     1. Navigate to `Storage Account`.
     2. Select your storage account.
-    3. Select `Access keys` and you can see your Storage account name, connection strings and account keys.
+    3. Select `Access keys` and you can see your Storage account connection string.
 
   The connection string looks like this:
 
-    ```bash
-    DefaultEndpointsProtocol=https;AccountName=<ACCOUNT_NAME>;AccountKey=<ACCOUNT_KEY>;EndpointSuffix=core.windows.net
-    ```
+  ```bash
+  DefaultEndpointsProtocol=https;AccountName=<ACCOUNT_NAME>;AccountKey=<ACCOUNT_KEY>;EndpointSuffix=core.windows.net
+  ```
   
   The application configuration is stored in the `app.cfg` file. The file content is:
 
   ```bash
-  [StorageAuthentication]
-  AccountName=<ACCOUNT_NAME>
-  AccountKey=<ACCOUNT_KEY>
+  [Configuration]
+  StorageAccountConnectionString=<STORAGE_ACCOUNT_CONNECTION_STRING>
   ```
 
-  You must edit the `app.cfg` file and replace the values of:
+  You must edit the `app.cfg` file and replace the value of:
   
-  * `<ACCOUNT_NAME>` by the account name of your storage account.
-  * `<ACCOUNT_KEY>` by the account key of your storage account.
+  * `<STORAGE_ACCOUNT_CONNECTION_STRING>` by the connection string of your storage account.
   
   The application uses this information for accessing your Azure storage account.
 

Diff for: azureblobstoragelist/app.cfg

@@ -1,3 +1,2 @@
-[StorageAuthentication]
-AccountName=<ACCOUNT_NAME>
-AccountKey=<ACCOUNT_KEY>
+[Configuration]
+StorageAccountConnectionString=<STORAGE_ACCOUNT_CONNECTION_STRING>

Diff for: azureblobstoragelist/blobstoragelist.py

@@ -2,19 +2,19 @@
 # -*- coding: utf-8 -*-
 # blobstoragelist.py
 # It is an example that handles Blob Storage containers on Microsoft Azure.
-# List the blobs in a Blob Storage container.
+# List information about the blobs in a Blob Storage container in an Azure storage account.
 # You must provide 1 parameter:
 # CONTAINER_NAME = Name of the container
 
 import sys
 import os
 import configparser
-from azure.storage.blob import BlockBlobService, PublicAccess
+from azure.storage.blob import ContainerClient
 
 
-def loadcfg():
+def load_cfg():
     """
-    Read storage authentication information from a config file
+    Read storage account authentication information from a config file
     and return the values in a dictionary.
     """
     config_file = 'app.cfg'
@@ -25,7 +25,27 @@ def loadcfg():
         print('Config file "' + config_file + '" does not exist')
         sys.exit(1)
 
-    return dict(config.items('StorageAuthentication'))
+    return dict(config.items('Configuration'))
+
+
+def list_container_blobs(storage_account_conn_str, container_name):
+    """
+    List the blobs in a container in a storage account
+    """
+    try:
+        # Create the container object
+        container_client = ContainerClient.from_connection_string(conn_str=storage_account_conn_str,
+                                                                    container_name=container_name)
+        # List the blobs in the container
+        print('List of blobs in Blob Storage container "'+ container_name + '":')
+        blob_list = container_client.list_blobs()
+        for blob in blob_list:
+            print('- Blob name: ' + blob.name)
+            print('       size: ', blob.size)
+            
+    except Exception as e:
+        print("\nError:")
+        print(e)
 
 
 def main():
@@ -39,30 +59,13 @@ def main():
         sys.exit(1)
 
     container_name = args[0]
-    print('Container name: ' + container_name)
-
-    # Read storage authentication information
-    config_dict = loadcfg()
-    cfg_account_name = config_dict['accountname']
-    cfg_account_key = config_dict['accountkey']
 
-    # Create the BlockBlockService that is used to call the Blob service for the storage account
-    block_blob_service = BlockBlobService(account_name=cfg_account_name, account_key=cfg_account_key)
+    # Read storage account authentication information
+    config_dict = load_cfg()
+    cfg_storage_account_conn_str = config_dict['storageaccountconnectionstring']
 
-    try:
-        # List the blobs in the container
-        if block_blob_service.exists(container_name):
-            print('List of blobs in Blob Storage container "'+ container_name + '":')
-            blobs_list = block_blob_service.list_blobs(container_name)
-            for blob in blobs_list:
-                props = blob.properties
-                print('- Blob name: ' + blob.name)
-                print('       size: ', props.content_length)
-        else:
-            print('\nError: Blob Storage container "' + container_name + '" does NOT exist.')
-    except Exception as e:
-        print("\nError:")
-        print(e)
+    # List the blobs in the container
+    list_container_blobs(cfg_storage_account_conn_str, container_name)
 
     return
 

Diff for: azureblobstoragelist/requirements.txt

@@ -0,0 +1 @@
+azure-storage-blob