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137 lines
4.1 KiB
Python
137 lines
4.1 KiB
Python
#!/usr/bin/python
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# -*- coding: utf-8 -*-
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# (c) 2012, Stephen Fromm <sfromm@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 os
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import os.path
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import shutil
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import tempfile
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DOCUMENTATION = '''
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---
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module: assemble
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short_description: Assembles a configuration file from fragments
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description:
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- Assembles a configuration file from fragments. Often a particular
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program will take a single configuration file and does not support a
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C(conf.d) style structure where it is easy to build up the configuration
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from multiple sources. Assemble will take a directory of files that have
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already been transferred to the system, and concatenate them together to
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produce a destination file. Files are assembled in string sorting order.
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Puppet calls this idea I(fragments).
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version_added: "0.5"
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options:
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src:
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description:
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- An already existing directory full of source files.
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required: true
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default: null
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aliases: []
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dest:
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description:
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- A file to create using the concatenation of all of the source files.
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required: true
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default: null
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backup:
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description:
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- Create a backup file (if C(yes)), including the timestamp information so
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you can get the original file back if you somehow clobbered it
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incorrectly.
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required: false
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choices: [ "yes", "no" ]
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default: "no"
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others:
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description:
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- all arguments accepted by the M(file) module also work here
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required: false
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examples:
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- code: "assemble: src=/etc/someapp/fragments dest=/etc/someapp/someapp.conf"
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description: "Example from Ansible Playbooks"
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author: Stephen Fromm
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'''
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# ===========================================
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# Support methods
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def assemble_from_fragments(path):
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''' assemble a file from a directory of fragments '''
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assembled = []
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for f in sorted(os.listdir(path)):
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fragment = "%s/%s" % (path, f)
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if os.path.isfile(fragment):
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assembled.append(file(fragment).read())
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return "".join(assembled)
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def write_temp_file(data):
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fd, path = tempfile.mkstemp()
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os.write(fd, data)
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os.close(fd)
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return path
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# ==============================================================
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# main
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def main():
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module = AnsibleModule(
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# not checking because of daisy chain to file module
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check_invalid_arguments = False,
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argument_spec = dict(
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src = dict(required=True),
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dest = dict(required=True),
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backup=dict(default=False, choices=BOOLEANS),
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)
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)
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changed=False
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pathmd5 = None
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destmd5 = None
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src = os.path.expanduser(module.params['src'])
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dest = os.path.expanduser(module.params['dest'])
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backup = module.boolean(module.params.get('backup', False))
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if not os.path.exists(src):
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module.fail_json(msg="Source (%s) does not exist" % src)
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if not os.path.isdir(src):
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module.fail_json(msg="Source (%s) is not a directory" % src)
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path = write_temp_file(assemble_from_fragments(src))
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pathmd5 = module.md5(path)
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if os.path.exists(dest):
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destmd5 = module.md5(dest)
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if pathmd5 != destmd5:
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if backup and destmd5 is not None:
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module.backup_local(dest)
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shutil.copy(path, dest)
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changed = True
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# Mission complete
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module.exit_json(src=src, dest=dest, md5sum=destmd5,
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changed=changed, msg="OK",
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daisychain="file", daisychain_args=module.params)
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# this is magic, see lib/ansible/module_common.py
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#<<INCLUDE_ANSIBLE_MODULE_COMMON>>
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main()
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