Add a clouds.yaml checker

Load our various cloud configuration files into openstacksdk for a
basic sanity check of the configuration.

Change-Id: Ieedb3439533f3162d2b5cecca4b7fc07b631019e

test-requirements.txt

@@ -7,3 +7,4 @@ oslosphinx>=4.7.0 # Apache-2.0
 bashate>=0.2 # Apache-2.0
 PyYAML>=3.10.0 # MIT
 ansible-lint
+openstacksdk

tools/check_clouds_yaml.py

@@ -0,0 +1,58 @@
+#! /usr/bin/env python
+
+# Copyright 2018 Red Hat
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import os
+import openstack
+import re
+import sys
+import tempfile
+
+FILES_TO_CHECK = (
+    'modules/openstack_project/templates/nodepool/clouds.yaml.erb',
+    'modules/openstack_project/templates/puppetmaster/all-clouds.yaml.erb',
+    'modules/openstack_project/templates/puppetmaster/ansible-clouds.yaml.erb'
+)
+
+
+def check_files():
+
+    with tempfile.TemporaryDirectory() as tempdir:
+        for file in FILES_TO_CHECK:
+            # These are actually erb files that have templating in
+            # them, we just rewrite them with a string in there for
+            # the parser to read, as the <>'s can confuse yaml
+            # depending on how they're quoted in the file
+            temp = open(os.path.join(tempdir,
+                                     os.path.basename(file)), 'w')
+            in_file = open(file, 'r')
+            for line in in_file:
+                line = re.sub(r'<%.*%>', 'loremipsum', line)
+                temp.write(line)
+            temp.close()
+
+            try:
+                print("Checking parsing of %s" % file)
+                c = openstack.config.OpenStackConfig(config_files=[temp.name])
+            except Exception as e:
+                print("Error parsing : %s" % file)
+                print(e)
+                sys.exit(1)
+
+def main():
+    check_files()
+
+if __name__ == "__main__":
+    sys.exit(main())

tox.ini

@@ -9,12 +9,14 @@ install_command = pip install {opts} {packages}
 deps = -r{toxinidir}/test-requirements.txt
 
 [testenv:linters]
+basepython = python3
 whitelist_externals = bash
 commands =
   flake8
   {toxinidir}/tools/run-bashate.sh
-  python {toxinidir}/tools/sorted_modules_env.py {toxinidir}/modules.env
-  python {toxinidir}/tools/irc_checks.py
+  python3 {toxinidir}/tools/sorted_modules_env.py {toxinidir}/modules.env
+  python3 {toxinidir}/tools/irc_checks.py
+  python3 {toxinidir}/tools/check_clouds_yaml.py
   # Ansible Lint Check
   bash -c "find playbooks -type f -regex '.*.y[a]?ml' -print0 | xargs -t -n1 -0 \
     ansible-lint -x ANSIBLE0004 -x ANSIBLE0006 -x ANSIBLE0007 -x ANSIBLE0011 \