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# Copyright 2014 Codethink Ltd.
#
# This program 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; version 2 of the License.
#
# This program 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 this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
import json
import logging
import os
import shutil
import cliapp
from . import util
class JobRunner(object):
"""A generic Zuul job runner."""
logging.getLogger('mason.runners.JobRunner')
def __init__(self, worker_server, config, function):
self._reset()
self.worker_server = worker_server
self.plugin_config = config
self.function = function
self.total_steps = 0
def _reset(self):
self.success = True
self.cancelled = False
self.job = None
self.job_arguments = None
self.current_step = 0
def start_job(self, job):
self._reset()
self.job = job
if self.job is not None:
print "starting job"
try:
self.job_arguments = json.loads(self.job.arguments.decode('utf-8'))
self.send_work_data()
self.run_job()
self.send_work_complete()
except Exception as e:
self.success = False
self.send_work_data(result='Exception: %s' % e)
self.job.sendWorkException(str(e).encode('utf-8'))
def _get_work_data(self):
work_data = {'name': self.function,
'location': os.uname()[1],
'number': self.job.unique,
}
return work_data
def send_work_data(self, data=None, result=''):
if data is None:
data = self._get_work_data()
if self.success:
data['result'] = 'SUCCESS'
else:
data['result'] = result
logging.debug(json.dumps(data))
print data
self.job.sendWorkData(json.dumps(data))
def send_work_complete(self, data=None):
if data is None:
data = self._get_work_data()
self.send_work_data(data)
if self.success:
print 'sending work-complete'
self.job.sendWorkComplete(json.dumps(data))
else:
print 'sending work-fail'
self.job.sendWorkFail()
def stop_working(self, number=None):
if number is None or number == self.job.unique:
self.cancelled = True
def run_job(self):
# This function is to be implemented by subclasses
pass
def _do_next_step(self):
self._handle_cancellation()
self.current_step += 1
data = self._get_work_data()
data['current-step'] = self.current_step
self.send_work_data(data)
def _handle_cancellation(self):
if self.cancelled:
data = self._get_work_data()
data['result'] = 'Cancelled'
self.send_work_data(data)
self.job.sendWorkFail()
raise Exception('Job cancelled')
def _do_git_config(self, name='Mason Test Runner', email='mason@runner'):
cliapp.runcmd(['git', 'config', '--global', 'user.name', name])
cliapp.runcmd(['git', 'config', '--global', 'user.email', email])
@util.job_step
def _create_workspace(self):
os.chdir('/root')
self.commit = self.job_arguments['ZUUL_COMMIT']
self.project = self.job_arguments['ZUUL_PROJECT']
self.ref = self.job_arguments['ZUUL_REF']
self.workspace = '/root/mason-workspace'
self.zuul_url = self.job_arguments['ZUUL_URL']
self._do_git_config()
if os.path.exists(self.workspace):
shutil.rmtree(self.workspace)
cliapp.runcmd(['morph', 'init', self.workspace])
zuul_gits_dir = 'var/lib/zuul/git/'
repo_dir = os.path.join('/', zuul_gits_dir, self.project)
cliapp.runcmd(['morph', 'checkout', repo_dir, self.commit],
cwd=self.workspace)
# Morph allows us to rename the system branch directory from the
# ludicrously long name that it chose for us.
temp_defs_checkout = os.path.join(
self.workspace, self.commit, zuul_gits_dir, self.project)
self.defs_checkout = os.path.join(
self.workspace, self.commit, self.project)
logging.debug(
'Renaming system-branch directory from %s to %s',
temp_defs_checkout, self.defs_checkout)
os.renames(temp_defs_checkout, self.defs_checkout)
self.morph_helper = util.MorphologyHelper(self.defs_checkout)
def _remove_workspace(self):
cliapp.runcmd(['rm', '-rf', self.workspace])
@util.job_step
def _clean_up(self):
os.chdir('/root')
self._remove_workspace()
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