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# Copyright (c) 2013-2014 Intel Corporation
#
# Released under the MIT license (see COPYING.MIT)
# DESCRIPTION
# This module is mainly used by scripts/oe-selftest and modules under meta/oeqa/selftest
# It provides a class and methods for running commands on the host in a convienent way for tests.
import os
import sys
import signal
import subprocess
import threading
import logging
from oeqa.utils import CommandError
from oeqa.utils import ftools
import re
import contextlib
# Export test doesn't require bb
try:
import bb
except ImportError:
pass
class Command(object):
def __init__(self, command, bg=False, timeout=None, data=None, **options):
self.defaultopts = {
"stdout": subprocess.PIPE,
"stderr": subprocess.STDOUT,
"stdin": None,
"shell": False,
"bufsize": -1,
}
self.cmd = command
self.bg = bg
self.timeout = timeout
self.data = data
self.options = dict(self.defaultopts)
if isinstance(self.cmd, str):
self.options["shell"] = True
if self.data:
self.options['stdin'] = subprocess.PIPE
self.options.update(options)
self.status = None
self.output = None
self.error = None
self.thread = None
self.log = logging.getLogger("utils.commands")
def run(self):
self.process = subprocess.Popen(self.cmd, **self.options)
def commThread():
self.output, self.error = self.process.communicate(self.data)
self.thread = threading.Thread(target=commThread)
self.thread.start()
self.log.debug("Running command '%s'" % self.cmd)
if not self.bg:
self.thread.join(self.timeout)
self.stop()
def stop(self):
if self.thread.isAlive():
self.process.terminate()
# let's give it more time to terminate gracefully before killing it
self.thread.join(5)
if self.thread.isAlive():
self.process.kill()
self.thread.join()
if not self.output:
self.output = ""
else:
self.output = self.output.decode("utf-8", errors='replace').rstrip()
self.status = self.process.poll()
self.log.debug("Command '%s' returned %d as exit code." % (self.cmd, self.status))
# logging the complete output is insane
# bitbake -e output is really big
# and makes the log file useless
if self.status:
lout = "\n".join(self.output.splitlines()[-20:])
self.log.debug("Last 20 lines:\n%s" % lout)
class Result(object):
pass
def runCmd(command, ignore_status=False, timeout=None, assert_error=True, **options):
result = Result()
cmd = Command(command, timeout=timeout, **options)
cmd.run()
result.command = command
result.status = cmd.status
result.output = cmd.output
result.error = cmd.error
result.pid = cmd.process.pid
if result.status and not ignore_status:
if assert_error:
raise AssertionError("Command '%s' returned non-zero exit status %d:\n%s" % (command, result.status, result.output))
else:
raise CommandError(result.status, command, result.output)
return result
def bitbake(command, ignore_status=False, timeout=None, postconfig=None, **options):
if postconfig:
postconfig_file = os.path.join(os.environ.get('BUILDDIR'), 'oeqa-post.conf')
ftools.write_file(postconfig_file, postconfig)
extra_args = "-R %s" % postconfig_file
else:
extra_args = ""
if isinstance(command, str):
cmd = "bitbake " + extra_args + " " + command
else:
cmd = [ "bitbake" ] + [a for a in (command + extra_args.split(" ")) if a not in [""]]
try:
return runCmd(cmd, ignore_status, timeout, **options)
finally:
if postconfig:
os.remove(postconfig_file)
def get_bb_env(target=None, postconfig=None):
if target:
return bitbake("-e %s" % target, postconfig=postconfig).output
else:
return bitbake("-e", postconfig=postconfig).output
def get_bb_vars(variables=None, target=None, postconfig=None):
"""Get values of multiple bitbake variables"""
bbenv = get_bb_env(target, postconfig=postconfig)
if variables is not None:
variables = variables.copy()
var_re = re.compile(r'^(export )?(?P<var>\w+)="(?P<value>.*)"$')
unset_re = re.compile(r'^unset (?P<var>\w+)$')
lastline = None
values = {}
for line in bbenv.splitlines():
match = var_re.match(line)
val = None
if match:
val = match.group('value')
else:
match = unset_re.match(line)
if match:
# Handle [unexport] variables
if lastline.startswith('# "'):
val = lastline.split('"')[1]
if val:
var = match.group('var')
if variables is None:
values[var] = val
else:
if var in variables:
values[var] = val
variables.remove(var)
# Stop after all required variables have been found
if not variables:
break
lastline = line
if variables:
# Fill in missing values
for var in variables:
values[var] = None
return values
def get_bb_var(var, target=None, postconfig=None):
return get_bb_vars([var], target, postconfig)[var]
def get_test_layer():
layers = get_bb_var("BBLAYERS").split()
testlayer = None
for l in layers:
if '~' in l:
l = os.path.expanduser(l)
if "/meta-selftest" in l and os.path.isdir(l):
testlayer = l
break
return testlayer
def create_temp_layer(templayerdir, templayername, priority=999, recipepathspec='recipes-*/*'):
os.makedirs(os.path.join(templayerdir, 'conf'))
with open(os.path.join(templayerdir, 'conf', 'layer.conf'), 'w') as f:
f.write('BBPATH .= ":${LAYERDIR}"\n')
f.write('BBFILES += "${LAYERDIR}/%s/*.bb \\' % recipepathspec)
f.write(' ${LAYERDIR}/%s/*.bbappend"\n' % recipepathspec)
f.write('BBFILE_COLLECTIONS += "%s"\n' % templayername)
f.write('BBFILE_PATTERN_%s = "^${LAYERDIR}/"\n' % templayername)
f.write('BBFILE_PRIORITY_%s = "%d"\n' % (templayername, priority))
f.write('BBFILE_PATTERN_IGNORE_EMPTY_%s = "1"\n' % templayername)
@contextlib.contextmanager
def runqemu(pn, ssh=True):
import bb.tinfoil
import bb.build
tinfoil = bb.tinfoil.Tinfoil()
tinfoil.prepare(config_only=False, quiet=True)
try:
tinfoil.logger.setLevel(logging.WARNING)
import oeqa.targetcontrol
tinfoil.config_data.setVar("TEST_LOG_DIR", "${WORKDIR}/testimage")
tinfoil.config_data.setVar("TEST_QEMUBOOT_TIMEOUT", "1000")
recipedata = tinfoil.parse_recipe(pn)
# The QemuRunner log is saved out, but we need to ensure it is at the right
# log level (and then ensure that since it's a child of the BitBake logger,
# we disable propagation so we don't then see the log events on the console)
logger = logging.getLogger('BitBake.QemuRunner')
logger.setLevel(logging.DEBUG)
logger.propagate = False
logdir = recipedata.getVar("TEST_LOG_DIR", True)
qemu = oeqa.targetcontrol.QemuTarget(recipedata)
finally:
# We need to shut down tinfoil early here in case we actually want
# to run tinfoil-using utilities with the running QEMU instance.
# Luckily QemuTarget doesn't need it after the constructor.
tinfoil.shutdown()
# Setup bitbake logger as console handler is removed by tinfoil.shutdown
bblogger = logging.getLogger('BitBake')
bblogger.setLevel(logging.INFO)
console = logging.StreamHandler(sys.stdout)
bbformat = bb.msg.BBLogFormatter("%(levelname)s: %(message)s")
if sys.stdout.isatty():
bbformat.enable_color()
console.setFormatter(bbformat)
bblogger.addHandler(console)
try:
qemu.deploy()
try:
qemu.start(ssh=ssh)
except bb.build.FuncFailed:
raise Exception('Failed to start QEMU - see the logs in %s' % logdir)
yield qemu
finally:
try:
qemu.stop()
except:
pass
def updateEnv(env_file):
"""
Source a file and update environment.
"""
cmd = ". %s; env -0" % env_file
result = runCmd(cmd)
for line in result.output.split("\0"):
(key, _, value) = line.partition("=")
os.environ[key] = value
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