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puppetdb_stencil.py
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puppetdb_stencil.py
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#!/usr/bin/env python
"""
puppetdb-stencil is a tool to render puppet resources using templates.
"""
from __future__ import print_function
from __future__ import unicode_literals
import argparse
import logging
import pypuppetdb
import jinja2
LOG = logging.getLogger('puppetdb_stencil')
METAPARAMS = ('require', 'before', 'subscribe', 'notify', 'audit', 'loglevel',
'ensure', 'noop', 'schedule', 'stage', 'alias', 'tag', 'target')
# Allow templates from anywhere on the filesystem
LOADER = jinja2.FileSystemLoader(['.', '/'])
EXTENSIONS = ['jinja2.ext.with_', 'jinja2.ext.loopcontrols']
ENVIRONMENT = jinja2.Environment(trim_blocks=True, lstrip_blocks=True,
loader=LOADER, extensions=EXTENSIONS)
def render_resources(database, resource_type, template_names, query):
"""
Render resources of the given type. They are queried from the given
database and rendered using the first template from template_names that can
be loaded.
"""
full_query = []
if query == "":
resources = database.resources(resource_type, query='["and",["~", "tag", "" ]]')
else:
for tag in query:
qtag = '["=", "tag", "%s" ]' % str(tag)
full_query.append(qtag)
resources = database.resources(resource_type, query='["and", %s ]' % (", ".join(full_query)) )
try:
template = ENVIRONMENT.select_template(template_names)
except jinja2.TemplatesNotFound:
LOG.error('No template found for {0}'.format(resource_type))
else:
return template.render(resource_type=resource_type,
resources=resources, metaparams=METAPARAMS)
def main():
"""
Main function
"""
parser = argparse.ArgumentParser(prog='puppetdb_stencil')
parser.add_argument('resource_types', metavar='RESOURCE_TYPE', nargs='+')
parser.add_argument('--templates', '-t', metavar='TEMPLATE', nargs='*')
parser.add_argument('--debug', '-d', action='store_true')
parser.add_argument('--host', '-H', default='localhost')
parser.add_argument('--port', '-p', default='8080')
parser.add_argument('--tag', '-g', default='', nargs='+')
args = parser.parse_args()
logging.basicConfig(level=logging.DEBUG if args.debug else logging.WARN)
tag=None
database = pypuppetdb.connect(host=args.host, port=args.port)
for resource_type in args.resource_types:
templates = ['{0}.jinja2'.format(resource_type)]
if args.templates:
templates += args.templates
print(render_resources(database, resource_type, templates, args.tag))
if __name__ == '__main__':
main()