Checking inventory file presence and format

Unless the inventory consists of only localhost, we are going to check
it's presence and formatting, before actually starting validations.

Docstring of the 'read_cli_data_file' was expanded to provide more info.

Signed-off-by: Jiri Podivin <jpodivin@redhat.com>
Change-Id: I44a3081f64b169d874d1b790b9739ad13e556714

validations_libs/cli/common.py

@@ -104,6 +104,13 @@ def write_junitxml(output_junitxml, results):
 
 def read_cli_data_file(data_file):
     """Read CLI data (YAML/JSON) file.
+    :param data_file: Path to the requested file.
+    :type data_file: ``path like``
+
+    :returns: Parsed YAML/JSON file
+    :rtype: ``dict``
+
+    :raises: RuntimeError if the file doesn't exist or is malformed.
     """
     try:
         with open(data_file, 'r') as _file:

validations_libs/cli/run.py

@@ -171,6 +171,14 @@ class Run(BaseCommand):
         # Get config:
         config = self.base.config
 
+        # Verify properties of inventory file, if it isn't just 'localhost'
+        if parsed_args.inventory.startswith('localhost'):
+            self.app.LOG.debug(
+                "You are using inline inventory. '{}'".format(
+                    parsed_args.inventory))
+        else:
+            common.read_cli_data_file(parsed_args.inventory)
+
         v_actions = ValidationActions(
             parsed_args.validation_dir, log_path=parsed_args.validation_log_dir)
         # Ansible execution should be quiet while using the validations_json