ansible/library/copy
2013-02-17 13:13:20 -05:00

150 lines
5.2 KiB
Python

#!/usr/bin/python
# -*- coding: utf-8 -*-
# (c) 2012, Michael DeHaan <michael.dehaan@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 shutil
import time
DOCUMENTATION = '''
---
module: copy
short_description: Copies files to remote locations.
description:
- The M(copy) module copies a file on the local box to remote locations.
options:
src:
description:
- Local path to a file to copy to the remote server; can be absolute or relative.
required: true
default: null
aliases: []
dest:
description:
- Remote absolute path where the file should be copied to.
required: true
default: null
backup:
description:
- Create a backup file including the timestamp information so you can get
the original file back if you somehow clobbered it incorrectly.
version_added: "0.7"
required: false
choices: [ "yes", "no" ]
default: "no"
thirsty:
description:
- the default is C(yes), which will replace the remote file when contents
are different than the source. If C(no), the file will only be transferred
if the destination does not exist.
version_added: "1.1"
required: false
choices: [ "yes", "no" ]
default: "yes"
others:
others:
description:
- all arguments accepted by the M(file) module also work here
required: false
examples:
- code: "copy: src=/srv/myfiles/foo.conf dest=/etc/foo.conf owner=foo group=foo mode=0644"
description: "Example from Ansible Playbooks"
- code: "copy: src=/mine/ntp.conf dest=/etc/ntp.conf owner=root group=root mode=644 backup=yes"
description: "Copy a new C(ntp.conf) file into place, backing up the original if it differs from the copied version"
author: Michael DeHaan
'''
def main():
module = AnsibleModule(
# not checking because of daisy chain to file module
argument_spec = dict(
src=dict(required=True),
dest=dict(required=True),
backup=dict(default=False, choices=BOOLEANS),
thirsty = dict(default='yes', choices=BOOLEANS),
),
add_file_common_args=True,
)
src = os.path.expanduser(module.params['src'])
dest = os.path.expanduser(module.params['dest'])
backup = module.boolean(module.params.get('backup', False))
thirsty = module.boolean(module.params['thirsty'])
if not os.path.exists(src):
module.fail_json(msg="Source %s failed to transfer" % (src))
if not os.access(src, os.R_OK):
module.fail_json(msg="Source %s not readable" % (src))
md5sum_src = module.md5(src)
md5sum_dest = None
if os.path.exists(dest):
if not thirsty:
module.exit_json(msg="file already exists", src=src, dest=dest, changed=False)
if (os.path.isdir(dest)):
basename = os.path.basename(src)
dest = os.path.join(dest, basename)
if os.access(dest, os.R_OK):
md5sum_dest = module.md5(dest)
else:
if not os.path.exists(os.path.dirname(dest)):
module.fail_json(msg="Destination directory %s does not exist" % (os.path.dirname(dest)))
if not os.access(os.path.dirname(dest), os.W_OK):
module.fail_json(msg="Destination %s not writable" % (os.path.dirname(dest)))
backup_file = None
if md5sum_src != md5sum_dest or os.path.islink(dest):
try:
if backup:
if os.path.exists(dest):
backup_file = module.backup_local(dest)
# allow for conversion from symlink.
if os.path.islink(dest):
os.unlink(dest)
open(dest, 'w').close()
#TODO:pid + epoch should avoid most collisions, hostname/mac for those using nfs?
# might be an issue with exceeding path length
dest_tmp = "%s.%s.%s.tmp" % (dest,os.getpid(),time.time())
shutil.copyfile(src, dest_tmp)
module.atomic_replace(dest_tmp, dest)
except shutil.Error:
module.fail_json(msg="failed to copy: %s and %s are the same" % (src, dest))
except IOError:
module.fail_json(msg="failed to copy: %s to %s" % (src, dest))
changed = True
else:
changed = False
res_args = dict(
dest = dest, src = src, md5sum = md5sum_src, changed = changed
)
if backup_file:
res_args['backup_file'] = backup_file
module.params['dest'] = dest
file_args = module.load_file_common_arguments(module.params)
res_args['changed'] = module.set_file_attributes_if_different(file_args, res_args['changed'])
module.exit_json(**res_args)
# this is magic, see lib/ansible/module_common.py
#<<INCLUDE_ANSIBLE_MODULE_COMMON>>
main()