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Changes is now determined by simply comparing before,after and cleaned (purge and/or force). Doc is updated.
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Yeukhon Wong
parent
ccc903216b
commit
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1 changed files with 79 additions and 65 deletions
144
library/hg
144
library/hg
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@ -4,7 +4,8 @@
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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>.
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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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@ -47,25 +48,33 @@ options:
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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 can either be a changeset number or a branch
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name.
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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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- 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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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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@ -102,38 +111,8 @@ 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 determine_changed(module, before, after, expecting):
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"""
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This compares the user supplied revision to the before
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and after revision (actually, id).
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get_revision calls hg id -b -i -t which returns the string
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"<changeset>[+] <branch_name> <tag>" and we compare if
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expected revision (which could be changeset,
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branch name) is part of the result string from hg id.
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"""
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# some custom error messages
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err1 = "no changes found. You supplied %s but repo is \
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currently at %s" %(expecting, after)
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err2 = "Unknown error. The state before operation was %s,\
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after the operation was %s, but we were expecting \
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%s as part of the state." %(before, after, expecting)
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# if before and after are equal, only two possible explainations
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# case one: when current working copy is already what user want
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# case two: when current working copy is ahead of what user want
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# in case two, hg will exist successfully although that contradict
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# user assumption. Therefore, alert the user by failing the task.
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if before == after and expecting in after:
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module.exit_json(changed=False, before=before, after=after)
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elif before == after and not expecting in after: # this is case two
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module.fail_json(msg=err2)
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elif before != after and expecting in after: # updated to expecting
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module.exit_json(changed=True, before=before, after=after)
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else:
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module.fail_json(msg=err2)
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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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@ -152,27 +131,58 @@ def get_revision(module, dest):
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return out.strip('\n')
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def has_local_mods(module, dest):
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out = get_revision(module, dest)
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if '+' in out:
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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, force):
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if not force and has_local_mods(module, dest):
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module.fail_json(msg="Respository has uncommited changes.")
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return _hg_command(module, ['update', '-C', '-R', dest])
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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) # hg purge requires purge extension
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_set_hgrc(hgrc, purge_option) # enable purge extension
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(rc, out, err) = _hg_command(module, ['purge', '-R', dest])
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if rc == 0:
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_undo_hgrc(hgrc, purge_option)
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else:
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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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@ -183,6 +193,11 @@ def hg_update(module, dest, revision):
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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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@ -199,28 +214,24 @@ def main():
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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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before = ''
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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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after = get_revision(module, dest)
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determine_changed(module, before, after, revision)
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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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# calls hg update -C and abort when uncommited changes
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# are present if force=no
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(rc, out, err) = hg_discard(module, dest, force)
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if rc != 0:
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module.fail_json(msg=err)
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if purge:
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hg_purge(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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@ -230,8 +241,11 @@ def main():
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if rc != 0:
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module.fail_json(msg=err)
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after = get_revision(module, dest)
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determine_changed(module, before, after, revision)
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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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