Source code for toxicbuild.core.vcs

# -*- coding: utf-8 -*-

# Copyright 2015 Juca Crispim <juca@poraodojuca.net>

# This file is part of toxicbuild.

# toxicbuild 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.

# toxicbuild 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 toxicbuild. If not, see <http://www.gnu.org/licenses/>.

from abc import ABCMeta, abstractmethod
import asyncio
import os
from toxicbuild.core.exceptions import VCSError
from toxicbuild.core.utils import (exec_cmd, inherit_docs, string2datetime,
                                   datetime2string, utc2localtime,
                                   localtime2utc, LoggerMixin, match_string)


[docs]class VCS(LoggerMixin, metaclass=ABCMeta): """ Generic inteface to a vcs (clone, fetch, get revisions etc...). """ vcsbin = None def __init__(self, workdir): """:param workdir: Directory where repository will be cloned and all action will happen. """ self.workdir = workdir @asyncio.coroutine
[docs] def exec_cmd(self, cmd, cwd=None): """ Executes a shell command. If ``cwd`` is None ``self.workdir`` will be used. :param cwd: Directory where the command will be executed. """ if cwd is None: cwd = self.workdir ret = yield from exec_cmd(cmd, cwd) return ret
[docs] def workdir_exists(self): """ Informs if the workdir for this vcs exists """ return os.path.exists(self.workdir)
@abstractmethod # pragma no branch @asyncio.coroutine
[docs] def clone(self, url): """ Clones a repository into ``self.workdir`` :param url: repository url """
@abstractmethod # pragma no branch @asyncio.coroutine
[docs] def fetch(self): """ Fetch changes from remote repository """
@abstractmethod # pragma no branch @asyncio.coroutine
[docs] def checkout(self, named_tree): """ Checkout to ``named_tree`` :param named_tree: A commit, branch, tag... """
@abstractmethod # pragma no branch @asyncio.coroutine
[docs] def pull(self, branch_name): """ Pull changes from ``branch_name`` on remote repo. :param branch_name: A branch name, like 'master'. """
@abstractmethod # pragma no branch @asyncio.coroutine
[docs] def has_changes(self): """ Informs if there are new revisions in the repository """
@abstractmethod # pragma no branch @asyncio.coroutine
[docs] def get_revisions(self, since={}, branches=None): """ Returns the revisions for ``branches`` since ``since``. :param since: dictionary in the format: {branch_name: since_date}. ``since`` is a datetime object. :param branches: A list of branches to look for new revisions. If ``branches`` is None all remote branches will be used. You can use wildcards in branches to filter the remote branches. """
@abstractmethod # pragma no branch @asyncio.coroutine
[docs] def get_revisions_for_branch(self, branch, since=None): """ Returns the revisions for ``branch`` since ``since``. If ``since`` is None, all revisions will be returned. :param branch: branch name :param since: datetime """
@abstractmethod # pragma no branch @asyncio.coroutine
[docs] def get_remote_branches(self): """ Returns a list of the remote branches available. """
def _filter_remote_branches(self, remote_branches, branch_filters): """Filters the remote branches based in filters for the branches' names.""" return [b for b in remote_branches if match_string(b, branch_filters)]
@inherit_docs
[docs]class Git(VCS): """ An interface to git version control system """ vcsbin = 'git' # this date_format is used to ask git about revisions since # some date date_format = '%a %b %d %H:%M:%S %Y' @asyncio.coroutine
[docs] def clone(self, url): cmd = '%s clone %s %s --recursive' % (self.vcsbin, url, self.workdir) # we can't go to self.workdir while we do not clone the repo yield from self.exec_cmd(cmd, cwd='.')
@asyncio.coroutine
[docs] def fetch(self): cmd = '%s %s' % (self.vcsbin, 'fetch') fetched = yield from self.exec_cmd(cmd) return fetched
@asyncio.coroutine
[docs] def checkout(self, named_tree): cmd = '{} checkout {}'.format(self.vcsbin, named_tree) yield from self.exec_cmd(cmd)
@asyncio.coroutine
[docs] def pull(self, branch_name): cmd = '{} pull --no-edit origin {}'.format(self.vcsbin, branch_name) ret = yield from self.exec_cmd(cmd) return ret
@asyncio.coroutine
[docs] def has_changes(self): ret = yield from self.fetch() return bool(ret)
@asyncio.coroutine
[docs] def update_submodule(self): cmd = '{} submodule init'.format(self.vcsbin) yield from self.exec_cmd(cmd) cmd = '{} submodule update'.format(self.vcsbin) ret = yield from self.exec_cmd(cmd) return ret
@asyncio.coroutine
[docs] def get_revisions(self, since={}, branches=None): # this must be called everytime so we sync our repo # with the remote repo and then we can see new branches yield from self.fetch() remote_branches = yield from self.get_remote_branches() if branches: remote_branches = self._filter_remote_branches( remote_branches, branches) revisions = {} for branch in remote_branches: try: yield from self.checkout(branch) yield from self.pull(branch) since_date = since.get(branch) revs = yield from self.get_revisions_for_branch(branch, since_date) revisions[branch] = revs except Exception as e: msg = 'Error fetching changes. {}'.format(str(e)) self.log(msg) return revisions
@asyncio.coroutine
[docs] def get_revisions_for_branch(self, branch, since=None): # hash | commit date | author | title cmd = '{} log --pretty=format:"%H | %ad | %an | %s" '.format( self.vcsbin) if since: # Here we change the time to localtime since we can't get # utc time in git commits unless we are using git 2.7+ localtime = utc2localtime(since) date = datetime2string(localtime, self.date_format) self.log('get revisions for branch {} since {}'.format(branch, date), level='debug') cmd += '--since="%s" ' % date cmd += '--date=local' last_revs = [r for r in (yield from self.exec_cmd(cmd)).split('\n') if r] last_revs.reverse() revisions = [] for rev in last_revs: rev_uuid, date, author, title = rev.split(' | ') date = string2datetime(date.strip(), dtformat=self.date_format) # Here we change the date from git, that is in localtime to # utc before saving to database. date = localtime2utc(date) revisions.append({'commit': rev_uuid.strip(), 'commit_date': date, 'author': author, 'title': title}) # The thing here is that the first revision in the list # is the last one consumed on last time return revisions[1:]
@asyncio.coroutine
[docs] def get_remote_branches(self): yield from self.fetch() cmd = '%s branch -r' % self.vcsbin out = yield from self.exec_cmd(cmd) msg = 'Remote branches: {}'.format(out) self.log(msg, level='debug') remote_branches = out.split('\n') # master, with some shitty arrow... remote_branches.pop(0) return [b.strip().split('/')[1] for b in remote_branches]
VCS_TYPES = {'git': Git}
[docs]def get_vcs(vcs_type): """ Retuns a subclass of :class:`toxicbuild.core.vcs.VCS` for ``vcs_type`` """ vcs = VCS_TYPES.get(vcs_type) if not vcs: raise VCSError('VCS not found for {}'.format(vcs_type)) return vcs