Improved error message with accounts yml read failures

src/lambda_codebase/initial_commit/bootstrap_repository/adf-build/provisioner/src/configparser.py

@@ -8,17 +8,41 @@
 
 import os
 import yaml
+from logger import configure_logger
 from .account import Account
 
 
+LOGGER = configure_logger(__name__)
+
+
 def read_config_files(folder):
     files = [os.path.join(folder, f) for f in os.listdir(folder)]
     accounts = []
     for filename in files:
-        if filename.endswith(".yml"):
-            with open(filename, 'r') as stream:
-                config = yaml.safe_load(stream)
-                for account in config.get('accounts', []):
-                    accounts.append(Account.load_from_config(account))
+        if not filename.endswith(".yml"):
+            # Skipping files that do not end with .yml
+            continue
+        accounts.extend(_read_config_file(filename))
 
     return accounts
+
+
+def _read_config_file(filename):
+    accounts = []
+    try:
+        with open(filename, 'r') as stream:
+            config = yaml.safe_load(stream)
+            for account in config.get('accounts', []):
+                accounts.append(Account.load_from_config(account))
+        return accounts
+    except Exception as error:
+        LOGGER.error(
+            "Could not process %s due to an error: %s. ",
+            filename,
+            error
+        )
+        LOGGER.error(
+            "Make sure the content of YAML files (.yml) are not empty and "
+            "contain a valid YAML data structure.",
+        )
+        raise