| # Copyright (c) 2017 The Chromium OS Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| # The objective of this test is to identify crashes outlined in the below |
| # directories while tests run. |
| |
| import logging |
| |
| class CrashDetector(object): |
| """ Identifies all crash files outlined in the below (crash_paths) |
| directories while tests run and get_crash_files finally retuns the list of |
| crash files found so that the count/file names can be used for further |
| analysis. At present this test looks for .meta and .kcrash files as defined |
| in crash_signs variable""" |
| version = 1 |
| |
| def __init__(self, host): |
| """Initilize variables and lists used in script |
| |
| @param host: this function runs on client or as defined |
| |
| """ |
| self.client = host |
| self.crash_paths = ['/var/spool', '/home/chronos', '/home/chronos/u-*'] |
| self.crash_signs = ('\( -name "*.meta*" -o -name "*.kcrash*" \) ' |
| '-printf "%f \n"') |
| self.files_found = [] |
| self.crash_files_list = [] |
| |
| |
| def remove_crash_files(self): |
| """Delete crash files from host.""" |
| for crash_path in self.crash_paths: |
| self.client.run('rm -rf %s/crash' % crash_path, |
| ignore_status=True) |
| |
| |
| def add_crash_files(self, crash_files, crash_path): |
| """Checks if files list is empty and then adds to files_list |
| |
| @param crash_files: list of crash files found in crash_path |
| @param crash_path: the path under which crash files are searched for |
| |
| """ |
| for crash_file in crash_files: |
| if crash_file is not '': |
| self.files_found.append(crash_file) |
| logging.info('CRASH DETECTED in %s/crash: %s', |
| crash_path, crash_file) |
| |
| |
| def find_crash_files(self): |
| """Gets crash files from crash_paths and adds them to list.""" |
| for crash_path in self.crash_paths: |
| if str(self.client.run('ls %s' % crash_path, |
| ignore_status=True)).find('crash') != -1: |
| crash_out = self.client.run("find {0} {1} ".format(crash_path, |
| self.crash_signs),ignore_status=True).stdout |
| crash_files = crash_out.strip().split('\n') |
| self.add_crash_files(crash_files, crash_path) |
| |
| |
| def get_new_crash_files(self): |
| """ Gets the newly generated files since last . |
| |
| @returns list of newly generated crashes |
| """ |
| self.find_crash_files() |
| files_collected = set(self.files_found) |
| crash_files = set(self.crash_files_list) |
| |
| diff = list(files_collected.difference(crash_files)) |
| if diff: |
| self.crash_files_list.extend(diff) |
| return diff |
| |
| |
| def is_new_crash_present(self): |
| """Checks for kernel, browser, process crashes on host |
| |
| @returns False if there are no crashes; True otherwise |
| |
| """ |
| if self.get_new_crash_files(): |
| return True |
| return False |
| |
| |
| def get_crash_files(self): |
| """Gets the list of crash_files collected during the tests whenever |
| is_new_crash_present method is called. |
| |
| @returns the list of crash files collected duing the test run |
| """ |
| self.is_new_crash_present() |
| return self.crash_files_list |
