1 # Copyright 2014 The Chromium OS Authors. All rights reserved. Use of 2 # this source code is governed by a BSD-style license that can be 3 # found in the LICENSE file. 4 5 import syslog 6 7 from autotest_lib.client.bin import test 8 from autotest_lib.client.common_lib import error 9 from autotest_lib.client.common_lib import utils 10 11 class platform_LogDupSuppression(test.test): 12 """Test that we suppress duplicate messages from one process to syslog""" 13 DUP_DETECT_SIG = "spam: last message repeated" 14 NON_SPAM_MSG = 'not spam' 15 NUM_SPAM_MSGS = 10 16 SPAM_LOG_PATH = '/var/log/spam.log' 17 SPAM_MSG = 'SPAM SPAM SPAM' 18 SYSLOG_BIN = 'rsyslogd' 19 SYSLOG_OPTS = '-c4' # allow version 4 commands 20 SYSLOG_JOB = 'syslog' 21 version = 1 22 23 24 def run_once(self): 25 syslog.openlog('spam') 26 try: 27 utils.run('stop %s' % self.SYSLOG_JOB, 28 ignore_status=True) # might not have been running 29 utils.run('truncate -s 0 %s' % self.SPAM_LOG_PATH) 30 utils.run('chown syslog %s' % self.SPAM_LOG_PATH) 31 utils.run('%s %s -f %s/rsyslog.test' % 32 (self.SYSLOG_BIN, self.SYSLOG_OPTS, self.bindir)) 33 34 for i in range(self.NUM_SPAM_MSGS): 35 syslog.syslog(self.SPAM_MSG) 36 syslog.syslog(self.NON_SPAM_MSG) 37 38 cmd_result = utils.run( 39 'grep "%s" %s' % (self.DUP_DETECT_SIG, self.SPAM_LOG_PATH), 40 ignore_status=True) 41 if cmd_result.exit_status: 42 raise error.TestFail( 43 'duplicate suppression signature not found') 44 45 spam_count = int( 46 utils.run('grep -c "%s" %s' % 47 (self.SPAM_MSG, self.SPAM_LOG_PATH)).stdout) 48 if spam_count != 1: 49 raise error.TestFail( 50 'got %s spams, expected exactly one' % spam_count) 51 finally: 52 utils.run('pkill %s' % self.SYSLOG_BIN) 53 utils.run('start %s' % self.SYSLOG_JOB) 54
