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ansible/library/subversion

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#!/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/>.
# I wanted to keep this simple at first, so for now this checks out
# from the given branch of a repo at a particular SHA or
# tag. Latest is not supported, you should not be doing
# that. Contribs welcome! -- MPD
# requires subversion and grep on the client.
import re
def get_version(dest):
''' samples the version of the git repo '''
os.chdir(dest)
cmd = "svn info"
revision = filter(lambda l: re.search('Revision',l) != None,os.popen(cmd).read().splitlines())
url = filter(lambda l: re.search('^URL',l) != None,os.popen(cmd).read().splitlines())
return [revision[0],url[0]]
def checkout(repo, dest):
''' makes a new svn repo if it does not already exist '''
cmd = "svn co %s %s" % (repo, dest)
cmd = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
(out, err) = cmd.communicate()
rc = cmd.returncode
return (rc, out, err)
def switch(repo, dest):
''' makes a new svn repo if it does not already exist '''
cmd = "svn sw %s %s" % (repo, dest)
cmd = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
(out, err) = cmd.communicate()
rc = cmd.returncode
return (rc, out, err)
def has_local_mods(dest):
os.chdir(dest)
cmd = "svn status"
lines = os.popen(cmd).read().splitlines()
filtered = filter(lambda c: re.search('^\\?.*$',c) == None,lines)
return len(filtered) > 0
def reset(dest,force):
'''
Reset the repo:
force: if true, then remove any local modifications. Else, fail if there are local modifications
'''
if has_local_mods(dest):
if force:
cmd = "svn revert -R ."
cmd = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
(out, err) = cmd.communicate()
rc = cmd.returncode
return (rc, out, err)
else:
return (-1,"ERROR: modified files exist in the repository.","")
return (0,"","")
def update(module, dest, version):
''' update an existing svn repo '''
os.chdir(dest)
cmd = ''
if version != 'HEAD':
cmd = "svn up -r %s" % version
else:
cmd = "svn up"
cmd = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
(out, err) = cmd.communicate()
rc = cmd.returncode
return (rc, out, err)
# ===========================================
def main():
module = AnsibleModule(
argument_spec = dict(
dest=dict(required=True),
repo=dict(required=True, aliases=['name']),
revision=dict(default='HEAD'),
force=dict(default='yes', choices=['yes', 'no'], aliases=['force'])
)
)
dest = module.params['dest']
repo = module.params['repo']
revision = module.params['revision']
force = module.boolean(module.params['force'])
rc, out, err, status = (0, None, None, None)
# if there is no .svn folder, do a checkout
# else update.
before = None
local_mods = False
if not os.path.exists("%s/.svn" % (dest)):
if os.path.exists(dest):
module.fail_json(msg="%s folder already exists, but its not a subversion repository." % (dest))
else:
(rc, out, err) = checkout(repo, dest)
if rc != 0:
module.fail_json(msg=err)
else:
local_mods = has_local_mods(dest)
# else do an update
before = get_version(dest)
(rc, out, err) = reset(dest,force)
if rc != 0:
module.fail_json(msg=err)
(rc, out, err) = switch(repo, dest)
if rc != 0:
module.fail_json(msg=err)
# handle errors from switch or pull
if err.find('ERROR') != -1:
module.fail_json(msg=err)
# switch to version specified regardless of whether
# we cloned or pulled
(rc, out, err) = update(module, dest, revision)
if rc != 0:
module.fail_json(msg=err)
# determine if we changed anything
after = get_version(dest)
changed = False
if before != after or local_mods:
changed = True
module.exit_json(changed=changed, before=before, after=after)
# include magic from lib/ansible/module_common.py
#<<INCLUDE_ANSIBLE_MODULE_COMMON>>
main()