[VVP] Adding preload generation functionality

preload.py discovers and loads implementations of
AbstractPreloadGenerator from any module on sys.path prefixed with
preload_*

Initial support is provided for VNF-API and GR-API.  The templates
will provide a guide for users to provide their values.

Known limitations:
- No support for Contrail.  Preload will be created, but contrail
  parameters will be skipped. This will be addressed in the future.

Issue-ID: VVP-227
Signed-off-by: stark, steven <steven.stark@att.com>
Change-Id: I081d50ac379062fbf1bffebd687e920220d32571
Signed-off-by: Lovett, Trevor <trevor.lovett@att.com>
Signed-off-by: Lovett, Trevor (tl2972) <tl2972@att.com>

1 files changed, 22 insertions, 4 deletions

diff --git a/ice_validator/tests/helpers.py b/ice_validator/tests/helpers.py
index 6a6fb73..ff82c71 100644
--- a/ice_validator/tests/helpers.py
+++ b/ice_validator/tests/helpers.py
@@ -47,7 +47,16 @@ from collections import defaultdict
 from boltons import funcutils
 from tests import cached_yaml as yaml
 
-VERSION = "1.1.0"
+__path__ = [os.path.dirname(os.path.abspath(__file__))]
+DEFAULT_OUTPUT_DIR = "{}/../output".format(__path__[0])
+RE_BASE = re.compile(r"(^base$)|(^base_)|(_base_)|(_base$)")
+
+
+def is_base_module(template_path):
+    basename = os.path.basename(template_path).lower()
+    name, extension = os.path.splitext(basename)
+    is_yaml = extension in {".yml", ".yaml"}
+    return is_yaml and RE_BASE.search(name) and not name.endswith("_volume")
 
 
 def check_basename_ending(template_type, basename):
@@ -262,9 +271,6 @@ def check_indices(pattern, values, value_type):
     return invalid_params
 
 
-RE_BASE = re.compile(r"(^base$)|(^base_)|(_base_)|(_base$)")
-
-
 def get_base_template_from_yaml_files(yaml_files):
     """Return first filepath to match RE_BASE
     """
@@ -338,3 +344,15 @@ def get_param(property_value):
         else:
             return param
     return None
+
+
+def get_output_dir(config):
+    """
+    Retrieve the output directory for the reports and create it if necessary
+    :param config: pytest configuration
+    :return: output directory as string
+    """
+    output_dir = config.option.output_dir or DEFAULT_OUTPUT_DIR
+    if not os.path.exists(output_dir):
+        os.makedirs(output_dir, exist_ok=True)
+    return output_dir