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# Authors:
# Petr Viktorin <pviktori@redhat.com>
#
# Copyright (C) 2013 Red Hat
# see file 'COPYING' for use and warranty information
#
# 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, either version 3 of the License, or
# (at your option) any later version.
#
# 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, see <http://www.gnu.org/licenses/>.
"""A Nose plugin that integrates with BeakerLib"""
import os
import subprocess
import traceback
import logging
import tempfile
import nose
from nose.plugins import Plugin
from ipapython import ipautil
from ipapython.ipa_log_manager import log_mgr
class BeakerLibLogHandler(logging.Handler):
def __init__(self, beakerlib_command):
super(BeakerLibLogHandler, self).__init__()
self.beakerlib_command = beakerlib_command
def emit(self, record):
command = {
'DEBUG': 'rlLogDebug',
'INFO': 'rlLogInfo',
'WARNING': 'rlLogWarning',
'ERROR': 'rlLogError',
'CRITICAL': 'rlLogFatal',
}.get(record.levelname, 'rlLog')
self.beakerlib_command([command, self.format(record)])
class BeakerLibPlugin(Plugin):
"""A Nose plugin that integrates with BeakerLib"""
# Since BeakerLib is a Bash library, we need to run it in Bash.
# The plugin maintains a Bash process and feeds it with commands
# on events like test start/end, logging, etc.
# See nose.plugins.base.IPluginInterface for Nose plugin interface docs
name = 'beakerlib'
def __init__(self):
super(BeakerLibPlugin, self).__init__()
self.log = log_mgr.get_logger(self)
def options(self, parser, env=os.environ):
super(BeakerLibPlugin, self).options(parser, env=env)
self.env = env
self.parser = parser
def configure(self, options, conf):
super(BeakerLibPlugin, self).configure(options, conf)
if not self.enabled:
return
if 'BEAKERLIB' not in self.env:
self.parser.error(
'BeakerLib not active, cannot use --with-beakerlib')
# Set up the Bash process
self.bash = subprocess.Popen(['bash'],
stdin=subprocess.PIPE)
source_path = os.path.join(self.env['BEAKERLIB'], 'beakerlib.sh')
self.run_beakerlib_command(['.', source_path])
# _in_class_setup is set when we are in setup_class, so logs can be
# collected just before the first test starts
self._in_class_setup = False
# Redirect logging to our own handlers
self.setup_log_handler(BeakerLibLogHandler(self.run_beakerlib_command))
def setup_log_handler(self, handler):
log_mgr.configure(
{
'default_level': 'DEBUG',
'handlers': [{'log_handler': handler,
'format': '[%(name)s] %(message)s',
'level': 'debug'}]},
configure_state='beakerlib_plugin')
def run_beakerlib_command(self, cmd):
"""Given a command as a Popen-style list, run it in the Bash process"""
for word in cmd:
self.bash.stdin.write(ipautil.shell_quote(word))
self.bash.stdin.write(' ')
self.bash.stdin.write('\n')
self.bash.stdin.flush()
assert self.bash.returncode is None, "BeakerLib Bash process exited"
def report(self, stream):
"""End the Bash process"""
self.run_beakerlib_command(['exit'])
self.bash.communicate()
def startContext(self, context):
"""Start a test context (module, class)
For test classes, this starts a BeakerLib phase
"""
if not isinstance(context, type):
return
message = 'Nose Test Class: %s' % context.__name__
self.run_beakerlib_command(['rlPhaseStart', 'FAIL', message])
self._in_class_setup = True
def stopContext(self, context):
"""End a test context"""
if not isinstance(context, type):
return
self.collect_logs(context)
self.run_beakerlib_command(['rlPhaseEnd'])
def startTest(self, test):
"""Start a test phase"""
if self._in_class_setup:
self.collect_logs(test.context)
self.log.info('Running test: %s', test.id())
self.run_beakerlib_command(['rlPhaseStart', 'FAIL',
'Nose test: %s' % test])
def stopTest(self, test):
"""End a test phase"""
self.collect_logs(test.context)
self.run_beakerlib_command(['rlPhaseEnd'])
def addSuccess(self, test):
self.run_beakerlib_command(['rlPass', 'Test succeeded'])
def log_exception(self, err):
"""Log an exception
err is a 3-tuple as returned from sys.exc_info()
"""
message = ''.join(traceback.format_exception(*err)).rstrip()
self.run_beakerlib_command(['rlLogError', message])
def addError(self, test, err):
if issubclass(err[0], nose.SkipTest):
# Log skipped test.
# Unfortunately we only get to see this if the built-in skip
# plugin is disabled (--no-skip)
self.run_beakerlib_command(['rlPass', 'Test skipped: %s' % err[1]])
else:
self.log_exception(err)
self.run_beakerlib_command(
['rlFail', 'Test failed: unhandled exception'])
def addFailure(self, test, err):
self.log_exception(err)
self.run_beakerlib_command(['rlFail', 'Test failed'])
def collect_logs(self, test):
"""Collect logs specified in test's logs_to_collect attribute
"""
try:
logs_to_collect = test.logs_to_collect
except AttributeError:
self.log.debug('No logs to collect')
else:
for host, logs in logs_to_collect.items():
self.log.info('Collecting logs from: %s', host.hostname)
# Tar up the logs on the remote server
cmd = host.run_command(['tar', 'cJv'] + logs, log_stdout=False,
raiseonerr=False)
if cmd.returncode:
self.run_beakerlib_command(
['rlFail', 'Could not collect all requested logs'])
# Copy and unpack on the local side
topdirname = tempfile.mkdtemp()
dirname = os.path.join(topdirname, host.hostname)
os.mkdir(dirname)
tarname = os.path.join(dirname, 'logs.tar.xz')
with open(tarname, 'w') as f:
f.write(cmd.stdout_text)
self.log.info('%s', dirname)
ipautil.run(['tar', 'xJvf', 'logs.tar.xz'], cwd=dirname)
os.unlink(tarname)
# Use BeakerLib's rlFileSubmit on the indifidual files
# The resulting submitted filename will be
# $HOSTNAME-$FILENAME (with '/' replaced by '-')
self.run_beakerlib_command(['pushd', topdirname])
for dirpath, dirnames, filenames in os.walk(topdirname):
for filename in filenames:
fullname = os.path.relpath(
os.path.join(dirpath, filename), topdirname)
self.log.info('Submitting file: %s', fullname)
self.run_beakerlib_command(['rlFileSubmit', fullname])
self.run_beakerlib_command(['popd'])
# The BeakerLib process runs asynchronously, let it clean up
# after it's done with the directory
self.run_beakerlib_command(['rm', '-rvf', topdirname])
test.logs_to_collect.clear()
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