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#!/usr/bin/env python
'''
Generate the openshift-ansible/roles/lib_openshift_cli/library/ modules.
'''
import argparse
import os
import yaml
import six
OPENSHIFT_ANSIBLE_PATH = os.path.dirname(os.path.realpath(__file__))
OPENSHIFT_ANSIBLE_SOURCES_PATH = os.path.join(OPENSHIFT_ANSIBLE_PATH, 'sources.yml') # noqa: E501
LIBRARY = os.path.join(OPENSHIFT_ANSIBLE_PATH, '..', 'library/')
class GenerateAnsibleException(Exception):
'''General Exception for generate function'''
pass
def parse_args():
'''parse arguments to generate'''
parser = argparse.ArgumentParser(description="Generate ansible modules.")
parser.add_argument('--verify', action='store_true', default=False,
help='Verify library code matches the generated code.')
return parser.parse_args()
def fragment_banner(fragment_path, side, data):
"""Generate a banner to wrap around file fragments
:param string fragment_path: A path to a module fragment
:param string side: ONE OF: "header", "footer"
:param StringIO data: A StringIO object to write the banner to
"""
side_msg = {
"header": "Begin included fragment: {}",
"footer": "End included fragment: {}"
}
annotation = side_msg[side].format(fragment_path)
banner = """
# -*- -*- -*- {} -*- -*- -*-
""".format(annotation)
# Why skip?
#
# * 'generated' - This is the head of the script, we don't want to
# put comments before the #!shebang
#
# * 'license' - Wrapping this just seemed like gratuitous extra
if ("generated" not in fragment_path) and ("license" not in fragment_path):
data.write(banner)
# Make it self-contained testable
return banner
def generate(parts):
'''generate the source code for the ansible modules
:param Array parts: An array of paths (strings) to module fragments
'''
data = six.StringIO()
for fpart in parts:
# first line is pylint disable so skip it
with open(os.path.join(OPENSHIFT_ANSIBLE_PATH, fpart)) as pfd:
fragment_banner(fpart, "header", data)
for idx, line in enumerate(pfd):
if idx in [0, 1] and 'flake8: noqa' in line or 'pylint: skip-file' in line: # noqa: E501
continue
data.write(line)
fragment_banner(fpart, "footer", data)
return data
def get_sources():
'''return the path to the generate sources'''
return yaml.load(open(OPENSHIFT_ANSIBLE_SOURCES_PATH).read())
def verify():
'''verify if the generated code matches the library code'''
for fname, parts in get_sources().items():
data = generate(parts)
fname = os.path.join(LIBRARY, fname)
if not open(fname).read() == data.getvalue():
raise GenerateAnsibleException('Generated content does not match for %s' % fname)
def main():
''' combine the necessary files to create the ansible module '''
args = parse_args()
if args.verify:
verify()
for fname, parts in get_sources().items():
data = generate(parts)
fname = os.path.join(LIBRARY, fname)
with open(fname, 'w') as afd:
afd.seek(0)
afd.write(data.getvalue())
if __name__ == '__main__':
main()
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