252 lines
7.9 KiB
Python
252 lines
7.9 KiB
Python
#!/usr/bin/python
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#-*- coding: utf-8 -*-
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# (c) 2013, Yeukhon Wong <yeukhon@acm.org>
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#
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# This module was originally inspired by Brad Olson's ansible-module-mercurial
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# <https://github.com/bradobro/ansible-module-mercurial>. This module tends
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# to follow the git module implementation.
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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 ConfigParser
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from subprocess import Popen, PIPE
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DOCUMENTATION = '''
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---
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module: hg
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short_description: Manages Mercurial (hg) repositories.
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description:
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- Manages Mercurial (hg) repositories. Supports SSH, HTTP/S and local address.
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version_added: "1.0"
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author: Yeukhon Wong
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options:
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repo:
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description:
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- The repository address.
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required: true
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default: null
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dest:
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description:
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- Absolute path of where the repository should be cloned to.
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required: true
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default: null
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revision:
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description:
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- Equivalent C(-r) option in hg command which could be the changeset, revision number,
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branch name or even tag.
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required: false
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default: "default"
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force:
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description:
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- Discards uncommited changes. Runs C(hg update -C).
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required: false
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default: "yes"
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choices: [ yes, no ]
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purge:
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description:
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- Delets untracked files. Runs C(hg purge). Note this requires C(purge) extension to
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be enabled if C(purge=yes). This module will modify hgrc file on behalf of the user
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and undo the changes before exiting the task.
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required: false
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default: "no"
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choices: [ yes, no ]
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notes:
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- If the task seems to be hanging, first verify remote host is in C(known_hosts).
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SSH will prompt user to authorize the first contact with a remote host. One solution is to add
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C(StrictHostKeyChecking no) in C(.ssh/config) which will accept and authorize the connection
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on behalf of the user. However, if you run as a different user such as setting sudo to True),
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for example, root will not look at the user .ssh/config setting.
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examples:
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- code: "hg: repo=https://bitbucket.org/user/repo1 dest=/home/user/repo1 revision=stable purge=yes"
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description: Ensure the current working copy is inside the stable branch and deletes untracked files if any.
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requirements: [ ]
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'''
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def _set_hgrc(hgrc, vals):
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parser = ConfigParser.SafeConfigParser()
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parser.read(hgrc)
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# val is a list of triple-tuple of the form [(section, option, value),...]
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for each in vals:
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(section, option, value) = each
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if not parser.has_section(section):
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parser.add_section(section)
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parser.set(section, option, value)
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f = open(hgrc, 'w')
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parser.write(f)
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f.close()
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def _undo_hgrc(hgrc, vals):
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parser = ConfigParser.SafeConfigParser()
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parser.read(hgrc)
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for each in vals:
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(section, option, value) = each
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if parser.has_section(section):
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parser.remove_option(section, option)
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f = open(hgrc, 'w')
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parser.write(f)
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f.close()
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def _hg_command(module, args_list):
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(rc, out, err) = module.run_command(['hg'] + args_list)
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return (rc, out, err)
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def _hg_list_untracked(module, dest):
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return _hg_command(module, ['purge', '-R', dest, '--print'])
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def get_revision(module, dest):
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"""
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hg id -b -i -t returns a string in the format:
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"<changeset>[+] <branch_name> <tag>"
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This format lists the state of the current working copy,
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and indicates whether there are uncommitted changes by the
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plus sign. Otherwise, the sign is omitted.
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Read the full description via hg id --help
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"""
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(rc, out, err) = _hg_command(module, ['id', '-b', '-i', '-t', '-R', dest])
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if rc != 0:
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module.fail_json(msg=err)
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else:
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return out.strip('\n')
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def has_local_mods(module, dest):
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now = get_revision(module, dest)
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if '+' in now:
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return True
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else:
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return False
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def hg_discard(module, dest):
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before = has_local_mods(module, dest)
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if not before:
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return False
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(rc, out, err) = _hg_command(module, ['update', '-C', '-R', dest])
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if rc != 0:
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module.fail_json(msg=err)
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after = has_local_mods(module, dest)
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if before != after and not after: # no more local modification
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return True
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def hg_purge(module, dest):
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hgrc = os.path.join(dest, '.hg/hgrc')
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purge_option = [('extensions', 'purge', '')]
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_set_hgrc(hgrc, purge_option) # enable purge extension
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# before purge, find out if there are any untracked files
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(rc1, out1, err1) = _hg_list_untracked(module, dest)
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if rc1 != 0:
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module.fail_json(msg=err)
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# there are some untrackd files
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if out1 != '':
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(rc2, out2, err2) = _hg_command(module, ['purge', '-R', dest])
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if rc2 == 0:
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_undo_hgrc(hgrc, purge_option)
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else:
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module.fail_json(msg=err)
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return True
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else:
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return False
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def hg_cleanup(module, dest, force, purge):
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discarded = False
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purged = False
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if force:
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discarded = hg_discard(module, dest)
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if purge:
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purged = hg_purge(module, dest)
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if discarded or purged:
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return True
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else:
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return False
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def hg_pull(module, dest, revision):
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return _hg_command(module, ['pull', '-r', revision, '-R', dest])
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def hg_update(module, dest, revision):
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return _hg_command(module, ['update', '-R', dest])
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def hg_clone(module, repo, dest, revision):
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return _hg_command(module, ['clone', repo, dest, '-r', revision])
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def switch_version(module, dest, revision):
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return _hg_command(module, ['update', '-r', revision, '-R', dest])
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# ===========================================
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def main():
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module = AnsibleModule(
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argument_spec = dict(
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repo = dict(required=True),
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dest = dict(required=True),
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revision = dict(default="default"),
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force = dict(default='yes', choices=['yes', 'no']),
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purge = dict(default='no', choices=['yes', 'no'])
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),
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)
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repo = module.params['repo']
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dest = module.params['dest']
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revision = module.params['revision']
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force = module.boolean(module.params['force'])
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purge = module.boolean(module.params['purge'])
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hgrc = os.path.join(dest, '.hg/hgrc')
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# initial states
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before = ''
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changed = False
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cleaned = False
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# If there is no hgrc file, then assume repo is absent
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# and perform clone. Otherwise, perform pull and update.
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if not os.path.exists(hgrc):
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(rc, out, err) = hg_clone(module, repo, dest, revision)
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if rc != 0:
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module.fail_json(msg=err)
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else:
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# get the current state before doing pulling
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before = get_revision(module, dest)
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# can perform force and purge
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cleaned = hg_cleanup(module, dest, force, purge)
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(rc, out, err) = hg_pull(module, dest, revision)
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if rc != 0:
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module.fail_json(msg=err)
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(rc, out, err) = hg_update(module, dest, revision)
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if rc != 0:
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module.fail_json(msg=err)
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switch_version(module, dest, revision)
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after = get_revision(module, dest)
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if before != after or cleaned:
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changed = True
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module.exit_json(before=before, after=after, changed=changed, cleaned=cleaned)
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# include magic from lib/ansible/module_common.py
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#<<INCLUDE_ANSIBLE_MODULE_COMMON>>
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main()
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