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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
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, basestring):
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()
self.output = self.output.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.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, basestring):
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_var(var, target=None, postconfig=None):
val = None
bbenv = get_bb_env(target, postconfig=postconfig)
lastline = None
for line in bbenv.splitlines():
if re.search("^(export )?%s=" % var, line):
val = line.split('=')[1]
val = val.strip('\"')
break
elif re.match("unset %s$" % var, line):
# Handle [unexport] variables
if lastline.startswith('# "'):
val = lastline.split('\"')[1]
break
lastline = line
return val
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
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