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ansible/assemble

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#!/usr/bin/python
# -*- coding: utf-8 -*-
# (c) 2012, Stephen Fromm <sfromm@gmail.com>
#
# This file is part of Ansible
#
# Ansible is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Ansible is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
import os
import os.path
import shutil
import tempfile
# ===========================================
# Support methods
def assemble_from_fragments(path):
''' assemble a file from a directory of fragments '''
assembled = []
for f in sorted(os.listdir(path)):
fragment = "%s/%s" % (path, f)
if os.path.isfile(fragment):
assembled.append(file(fragment).read())
return "".join(assembled)
def write_temp_file(data):
fd, path = tempfile.mkstemp()
os.write(fd, data)
os.close(fd)
return path
# ==============================================================
# main
def main():
module = AnsibleModule(
argument_spec = dict(
src = dict(required=True),
dest = dict(required=True),
backup=dict(default=False, choices=BOOLEANS),
)
)
changed=False
pathmd5 = None
destmd5 = None
src = os.path.expanduser(module.params['src'])
dest = os.path.expanduser(module.params['dest'])
backup = module.boolean(module.params.get('backup', False))
if not os.path.exists(src):
module.fail_json(msg="Source (%s) does not exist" % src)
if not os.path.isdir(src):
module.fail_json(msg="Source (%s) is not a directory" % src)
path = write_temp_file(assemble_from_fragments(src))
pathmd5 = module.md5(path)
if os.path.exists(dest):
destmd5 = module.md5(dest)
if pathmd5 != destmd5:
if backup and destmd5 is not None:
module.backuplocal(dest)
shutil.copy(path, dest)
changed = True
# Mission complete
module.exit_json(src=src, dest=dest, md5sum=destmd5,
changed=changed, msg="OK",
daisychain="file", daisychain_args=module.params)
# this is magic, see lib/ansible/module_common.py
#<<INCLUDE_ANSIBLE_MODULE_COMMON>>
main()