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#!/usr/bin/python
# -*- coding: utf-8 -*-
# (c) 2013, André Paramés <git@andreparames.com>
# Based on the Git module by 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/>.
ANSIBLE_METADATA = {'status': ['preview'],
'supported_by': 'community',
'version': '1.0'}
DOCUMENTATION = u'''
---
module: bzr
author: "André Paramés (@andreparames)"
version_added: "1.1"
short_description: Deploy software (or files) from bzr branches
description:
- Manage I(bzr) branches to deploy files or software.
options:
name:
required: true
aliases: [ 'parent' ]
description:
- SSH or HTTP protocol address of the parent branch.
dest:
required: true
description:
- Absolute path of where the branch should be cloned to.
version:
required: false
default: "head"
description:
- What version of the branch to clone. This can be the
bzr revno or revid.
force:
required: false
default: "no"
choices: [ 'yes', 'no' ]
description:
- If C(yes), any modified files in the working
tree will be discarded. Before 1.9 the default
value was "yes".
executable:
required: false
default: null
version_added: "1.4"
description:
- Path to bzr executable to use. If not supplied,
the normal mechanism for resolving binary paths will be used.
'''
EXAMPLES = '''
# Example bzr checkout from Ansible Playbooks
- bzr:
name: 'bzr+ssh://foosball.example.org/path/to/branch'
dest: /srv/checkout
version: 22
'''
import re
class Bzr(object):
def __init__(self, module, parent, dest, version, bzr_path):
self.module = module
self.parent = parent
self.dest = dest
self.version = version
self.bzr_path = bzr_path
def _command(self, args_list, cwd=None, **kwargs):
(rc, out, err) = self.module.run_command([self.bzr_path] + args_list, cwd=cwd, **kwargs)
return (rc, out, err)
def get_version(self):
'''samples the version of the bzr branch'''
cmd = "%s revno" % self.bzr_path
rc, stdout, stderr = self.module.run_command(cmd, cwd=self.dest)
revno = stdout.strip()
return revno
def clone(self):
'''makes a new bzr branch if it does not already exist'''
dest_dirname = os.path.dirname(self.dest)
try:
os.makedirs(dest_dirname)
except:
pass
if self.version.lower() != 'head':
args_list = ["branch", "-r", self.version, self.parent, self.dest]
else:
args_list = ["branch", self.parent, self.dest]
return self._command(args_list, check_rc=True, cwd=dest_dirname)
def has_local_mods(self):
cmd = "%s status -S" % self.bzr_path
rc, stdout, stderr = self.module.run_command(cmd, cwd=self.dest)
lines = stdout.splitlines()
lines = filter(lambda c: not re.search('^\\?\\?.*$', c), lines)
return len(lines) > 0
def reset(self, force):
'''
Resets the index and working tree to head.
Discards any changes to tracked files in the working
tree since that commit.
'''
if not force and self.has_local_mods():
self.module.fail_json(msg="Local modifications exist in branch (force=no).")
return self._command(["revert"], check_rc=True, cwd=self.dest)
def fetch(self):
'''updates branch from remote sources'''
if self.version.lower() != 'head':
(rc, out, err) = self._command(["pull", "-r", self.version], cwd=self.dest)
else:
(rc, out, err) = self._command(["pull"], cwd=self.dest)
if rc != 0:
self.module.fail_json(msg="Failed to pull")
return (rc, out, err)
def switch_version(self):
'''once pulled, switch to a particular revno or revid'''
if self.version.lower() != 'head':
args_list = ["revert", "-r", self.version]
else:
args_list = ["revert"]
return self._command(args_list, check_rc=True, cwd=self.dest)
# ===========================================
def main():
module = AnsibleModule(
argument_spec = dict(
dest=dict(required=True, type='path'),
name=dict(required=True, aliases=['parent']),
version=dict(default='head'),
force=dict(default='no', type='bool'),
executable=dict(default=None),
)
)
dest = module.params['dest']
parent = module.params['name']
version = module.params['version']
force = module.params['force']
bzr_path = module.params['executable'] or module.get_bin_path('bzr', True)
bzrconfig = os.path.join(dest, '.bzr', 'branch', 'branch.conf')
rc, out, err, status = (0, None, None, None)
bzr = Bzr(module, parent, dest, version, bzr_path)
# if there is no bzr configuration, do a branch operation
# else pull and switch the version
before = None
local_mods = False
if not os.path.exists(bzrconfig):
(rc, out, err) = bzr.clone()
else:
# else do a pull
local_mods = bzr.has_local_mods()
before = bzr.get_version()
(rc, out, err) = bzr.reset(force)
if rc != 0:
module.fail_json(msg=err)
(rc, out, err) = bzr.fetch()
if rc != 0:
module.fail_json(msg=err)
# switch to version specified regardless of whether
# we cloned or pulled
(rc, out, err) = bzr.switch_version()
# determine if we changed anything
after = bzr.get_version()
changed = False
if before != after or local_mods:
changed = True
module.exit_json(changed=changed, before=before, after=after)
# import module snippets
from ansible.module_utils.basic import *
if __name__ == '__main__':
main()
|
