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107 lines
3.5 KiB
Python
107 lines
3.5 KiB
Python
#!/usr/bin/python
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# -*- coding: utf-8 -*-
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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 os
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import shutil
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import time
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def backuplocal(fn):
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"""make a date-marked backup of the specified file, return True or False on success or failure"""
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# backups named basename-YYYY-MM-DD@HH:MM~
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ext = time.strftime("%Y-%m-%d@%H:%M~", time.localtime(time.time()))
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backupdest = '%s.%s' % (fn, ext)
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try:
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shutil.copy2(fn, backupdest)
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except shutil.Error, e:
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return False, 'Could not make backup of %s to %s: %s' % (fn, backupdest, e)
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return True, backupdest
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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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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 failed to transfer" % (src))
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if not os.access(src, os.R_OK):
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module.fail_json(msg="Source %s not readable" % (src))
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md5sum_src = module.md5(src)
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md5sum_dest = None
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if os.path.exists(dest):
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if not os.access(dest, os.W_OK):
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module.fail_json(msg="Destination %s not writable" % (dest))
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if not os.access(dest, os.R_OK):
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module.fail_json(msg="Destination %s not readable" % (dest))
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# Allow dest to be directory without compromising md5 check
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if (os.path.isdir(dest)):
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module.fail_json(msg="Destination %s cannot be a directory" % (dest))
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md5sum_dest = module.md5(dest)
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else:
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if not os.access(os.path.dirname(dest), os.W_OK):
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module.fail_json(msg="Destination %s not writable" % (os.path.dirname(dest)))
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backup_file = None
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if md5sum_src != md5sum_dest:
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try:
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if backup:
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if os.path.exists(dest):
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success, msg = backuplocal(dest)
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if not success:
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module.fail_jason(msg=msg)
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else:
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backup_file = msg
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shutil.copyfile(src, dest)
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except shutil.Error:
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module.fail_json(msg="failed to copy: %s and %s are the same" % (src, dest))
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except IOError:
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module.fail_json(msg="failed to copy: %s to %s" % (src, dest))
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changed = True
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else:
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changed = False
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res_args = {
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'dest':dest,
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'src':src,
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'md5sum':md5sum_src,
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'changed':changed
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}
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if backup_file:
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res_args['backup_file'] = backup_file
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module.exit_json(**res_args)
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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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