Source code for toxicbuild.slave.managers

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

# Copyright 2015-2016 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/>.

import asyncio
from collections import defaultdict
import os
from toxicbuild.core import get_vcs
from toxicbuild.core.utils import (get_toxicbuildconf, LoggerMixin,
                                   ExecCmdError, match_string)
from toxicbuild.slave.build import Builder, BuildStep
from toxicbuild.slave.exceptions import (BuilderNotFound, BadBuilderConfig,
                                         BusyRepository)
from toxicbuild.slave.plugins import SlavePlugin


[docs]class BuildManager(LoggerMixin): """ A manager for remote build requests """ # repositories that are being cloned cloning_repos = set() # repositories that are being updated updating_repos = set() # repositories that are building something. # key is repo_url and value is named_tree building_repos = defaultdict(lambda: None) # pragma no branch WTF?? def __init__(self, protocol, repo_url, vcs_type, branch, named_tree): self.protocol = protocol self.repo_url = repo_url self.vcs = get_vcs(vcs_type)(self.workdir) self.branch = branch self.named_tree = named_tree self._configmodule = None def __enter__(self): if self.current_build and self.current_build != self.named_tree: msg = '{} is busy at {}. Can\'t work at {}'.format( self.repo_url, self.current_build, self.named_tree) raise BusyRepository(msg) self.current_build = self.named_tree return self def __exit__(self, exc_type, exc_val, exc_tb): self.current_build = None @property def configmodule(self): if not self._configmodule: # pragma: no branch self._configmodule = get_toxicbuildconf(self.workdir) return self._configmodule @property def workdir(self): """ The directory where the source code of this repository is cloned into """ workdir = self.repo_url.replace('/', '-').replace('@', '').replace( ':', '') return os.path.join('src', workdir) @property def current_build(self): return type(self).building_repos.get(self.repo_url) @current_build.setter def current_build(self, value): type(self).building_repos[self.repo_url] = value @property def is_cloning(self): """Informs if this repository is being cloned.""" return self.repo_url in type(self).cloning_repos @is_cloning.setter def is_cloning(self, value): if value is True: type(self).cloning_repos.add(self.repo_url) else: type(self).cloning_repos.discard(self.repo_url) @property def is_updating(self): """Informs it this repository is fetching changes""" return self.repo_url in type(self).updating_repos @is_updating.setter def is_updating(self, value): if value is True: type(self).updating_repos.add(self.repo_url) else: type(self).updating_repos.discard(self.repo_url) @property def is_working(self): """Informs if this repository is cloning or updating""" return self.is_cloning or self.is_updating @asyncio.coroutine
[docs] def wait_clone(self): """Wait until the repository clone is complete.""" while self.is_cloning: yield from asyncio.sleep(1)
@asyncio.coroutine
[docs] def wait_update(self): """Wait until the repository update is complete.""" while self.is_updating: yield from asyncio.sleep(1)
@asyncio.coroutine
[docs] def wait_all(self): """Wait until clone and update are done.""" while self.is_working: yield from asyncio.sleep(1)
@asyncio.coroutine
[docs] def update_and_checkout(self, work_after_wait=True): """ Updates ``self.branch`` and checkout to ``self.named_tree``. :param work_after_wait: Indicates if we should update and checkout after waiting for other instance finishes its job. """ if self.is_working: yield from self.wait_all() if not work_after_wait: return try: self.is_updating = True if not self.vcs.workdir_exists(): self.log('cloning {}'.format(self.repo_url)) yield from self.vcs.clone(self.repo_url) # first we try to checkout to the named_tree because if if # already exists here we don't need to update the code. try: self.log('checking out to named_tree {}'.format( self.named_tree), level='debug') yield from self.vcs.checkout(self.named_tree) except ExecCmdError: # this is executed when the named_tree does not exist # so we upate the code and then checkout again. self.log('named_tree does not exist. updating...') self.log('checking out to branch {}'.format(self.branch), level='debug') yield from self.vcs.checkout(self.branch) yield from self.vcs.pull(self.branch) self.log('checking out to named_tree {}'.format( self.named_tree), level='debug') yield from self.vcs.checkout(self.named_tree) finally: self.is_updating = False
def _branch_match(self, builder): return builder.get('branch') is None or match_string( self.branch, [builder.get('branch', '')]) # the whole purpose of toxicbuild is this! # see the git history and look for the first versions. # First thing I changed on buildbot was to add the possibility # to load builers from a config file.
[docs] def list_builders(self): """ Returns a list with all builders names for this branch based on toxicbuild.conf file """ try: builders = [b['name'] for b in self.configmodule.BUILDERS if (b.get('branch') == self.branch or b.get( 'branch')is None)] except KeyError as e: key = str(e) msg = 'Your builder config does not have a required key'.format( key) raise BadBuilderConfig(msg) return builders
[docs] def load_builder(self, name): """ Load a builder from toxicbuild.conf :param name: builder name """ try: bdict = [b for b in self.configmodule.BUILDERS if (b.get( 'branch') is None and b['name'] == name) or (b.get( 'branch') == self.branch and b['name'] == name)][0] except IndexError: msg = 'builder {} does not exist for {} branch {}'.format( name, self.repo_url, self.branch) raise BuilderNotFound(msg) # this envvars are used in all steps in this builder builder_envvars = bdict.get('envvars', {}) builder = Builder(self, bdict['name'], self.workdir, **builder_envvars) builder.steps = self._get_builder_steps(builder, bdict) return builder
def _get_builder_steps(self, builder, bdict): plugins_conf = bdict.get('plugins') steps = [] if plugins_conf: builder.plugins = self._load_plugins(plugins_conf) for plugin in builder.plugins: steps += plugin.get_steps_before() for sdict in bdict['steps']: step = BuildStep(**sdict) steps.append(step) for plugin in builder.plugins: steps += plugin.get_steps_after() return steps # kind of wierd place for this thing @asyncio.coroutine
[docs] def send_info(self, info): yield from self.protocol.send_response(code=0, body=info)
[docs] def log(self, msg, level='info'): msg = '[{}]{}'.format(self.repo_url, msg) super().log(msg, level=level)
def _load_plugins(self, plugins_config): """ Returns a list of :class:`toxicbuild.slave.plugins.Plugin` subclasses based on the plugins listed on the config for a builder. """ plist = [] for pdict in plugins_config: plugin_class = SlavePlugin.get_plugin(pdict['name']) del pdict['name'] plugin = plugin_class(**pdict) plist.append(plugin) return plist