+
+# Mrityunjay Yadav: Function to verify charm included in VNF Package
+def validate_charm(charm, desc_file):
+ """
+ Verify charm included in VNF Package and raised error if invalid
+ :param charm: vnf-configuration/vdu-configuration
+ :param desc_file: descriptor file
+ :return: None
+ """
+ check_list = ['layer.yaml', 'metadata.yaml', 'actions.yaml', 'actions', 'hooks']
+ charm_name = charm['juju']['charm']
+ charm_dir = os.path.join(os.path.abspath(os.path.dirname(desc_file)), 'charms', charm_name)
+
+ config_primitive = charm.get('config-primitive', [])
+ initial_config_primitive = charm.get('initial-config-primitive', [])
+
+ if charm.get('metrics'):
+ check_list.append('metrics.yaml')
+
+ if os.path.exists(charm_dir):
+ if not all(item in os.listdir(charm_dir) for item in check_list):
+ raise KeyError("Invalid charm {}".format(charm_name))
+ else:
+ raise KeyError("Provided charm:{} does not exist in descriptor.".format(charm_name))
+
+
+if __name__ == "__main__":