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116 lines
2.8 KiB
Python
116 lines
2.8 KiB
Python
#!/usr/bin/python
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# (c) 2012, Michael DeHaan <michael.dehaan@gmail.com>
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#
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# This file is part of Ansible
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#
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# Ansible is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Ansible is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
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import sys
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import os
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import jinja2
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import shlex
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try:
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import json
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except ImportError:
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import simplejson as json
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# ===========================================
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# convert arguments of form a=b c=d
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# to a dictionary
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# FIXME: make more idiomatic
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if len(sys.argv) == 1:
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sys.exit(1)
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argfile = sys.argv[1]
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if not os.path.exists(argfile):
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sys.exit(1)
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items = shlex.split(open(argfile, 'r').read())
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params = {}
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for x in items:
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(k, v) = x.split("=")
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params[k] = v
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source = params['src']
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dest = params['dest']
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metadata = params.get('metadata', '/etc/ansible/setup')
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# raise an error if there is no template metadata
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if not os.path.exists(metadata):
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print json.dumps({
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"failed" : 1,
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"msg" : "Missing %s, did you run the setup module yet?" % metadata
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})
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sys.exit(1)
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# raise an error if we can't parse the template metadata
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try:
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f = open(metadata)
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data = json.loads(f.read())
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f.close()
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except:
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print json.dumps({
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"failed" : 1,
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"msg" : "Failed to parse/load %s, rerun the setup module?" % metadata
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})
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sys.exit(1)
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if not os.path.exists(source):
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print json.dumps({
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"failed" : 1,
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"msg" : "Source template could not be read: %s" % source
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})
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sys.exit(1)
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source = file(source).read()
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if os.path.isdir(dest):
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print json.dumps({
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"failed" : 1,
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"msg" : "Destination is a directory"
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})
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sys.exit(1)
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# record md5sum of original source file so we can report if it changed
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changed = False
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md5sum = None
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if os.path.exists(dest):
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md5sum = os.popen("md5sum %s" % dest).read().split()[0]
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# call Jinja2 here and save the new template file
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template = jinja2.Template(source)
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data_out = template.render(data)
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f = open(dest, "w+")
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f.write(data_out)
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f.close()
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# TODO: catch templating errors and do not clobber the file on the
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# other end unless things were successful
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# record m5sum and return success and whether things have changed
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md5sum2 = os.popen("md5sum %s" % dest).read().split()[0]
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if md5sum != md5sum2:
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changed = True
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# mission accomplished
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print json.dumps({
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"md5sum" : md5sum2,
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"changed" : changed
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})
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