| import os, time, logging, shutil |
| |
| from autotest_lib.client.common_lib import global_config |
| from autotest_lib.client.cros import constants |
| from autotest_lib.server import utils |
| from autotest_lib.site_utils.graphite import stats |
| |
| |
| # import any site hooks for the crashdump and crashinfo collection |
| get_site_crashdumps = utils.import_site_function( |
| __file__, "autotest_lib.server.site_crashcollect", "get_site_crashdumps", |
| lambda host, test_start_time: None) |
| get_site_crashinfo = utils.import_site_function( |
| __file__, "autotest_lib.server.site_crashcollect", "get_site_crashinfo", |
| lambda host, test_start_time: None) |
| |
| |
| _timer = stats.Timer('crash_collection') |
| |
| @_timer.decorate |
| def get_crashdumps(host, test_start_time): |
| get_site_crashdumps(host, test_start_time) |
| |
| |
| @_timer.decorate |
| def get_crashinfo(host, test_start_time): |
| logging.info("Collecting crash information...") |
| |
| # include crashdumps as part of the general crashinfo |
| get_crashdumps(host, test_start_time) |
| |
| if wait_for_machine_to_recover(host): |
| # run any site-specific collection |
| get_site_crashinfo(host, test_start_time) |
| |
| crashinfo_dir = get_crashinfo_dir(host) |
| collect_messages(host) |
| collect_command(host, "dmesg", os.path.join(crashinfo_dir, "dmesg")) |
| collect_uncollected_logs(host) |
| |
| # Collect everything in /var/log. |
| log_path = os.path.join(crashinfo_dir, 'var') |
| os.makedirs(log_path) |
| collect_log_file(host, constants.LOG_DIR, log_path) |
| |
| |
| # Load default for number of hours to wait before giving up on crash collection. |
| HOURS_TO_WAIT = global_config.global_config.get_config_value( |
| 'SERVER', 'crash_collection_hours_to_wait', type=float, default=4.0) |
| |
| |
| def wait_for_machine_to_recover(host, hours_to_wait=HOURS_TO_WAIT): |
| """Wait for a machine (possibly down) to become accessible again. |
| |
| @param host: A RemoteHost instance to wait on |
| @param hours_to_wait: Number of hours to wait before giving up |
| |
| @returns: True if the machine comes back up, False otherwise |
| """ |
| current_time = time.strftime("%b %d %H:%M:%S", time.localtime()) |
| if host.is_up(): |
| logging.info("%s already up, collecting crash info", host.hostname) |
| return True |
| |
| logging.info("Waiting %s hours for %s to come up (%s)", |
| hours_to_wait, host.hostname, current_time) |
| if not host.wait_up(timeout=hours_to_wait * 3600): |
| stats.Counter('collect_crashinfo_timeout').increment() |
| logging.warning("%s down, unable to collect crash info", |
| host.hostname) |
| return False |
| else: |
| logging.info("%s is back up, collecting crash info", host.hostname) |
| return True |
| |
| |
| def get_crashinfo_dir(host): |
| """Find and if necessary create a directory to store crashinfo in. |
| |
| @param host: The RemoteHost object that crashinfo will be collected from |
| |
| @returns: The path to an existing directory for writing crashinfo into |
| """ |
| host_resultdir = getattr(getattr(host, "job", None), "resultdir", None) |
| if host_resultdir: |
| infodir = host_resultdir |
| else: |
| infodir = os.path.abspath(os.getcwd()) |
| infodir = os.path.join(infodir, "crashinfo.%s" % host.hostname) |
| if not os.path.exists(infodir): |
| os.mkdir(infodir) |
| return infodir |
| |
| |
| def collect_log_file(host, log_path, dest_path): |
| """Collects a log file from the remote machine. |
| |
| Log files are collected from the remote machine and written into the |
| destination path. If dest_path is a directory, the log file will be named |
| using the basename of the remote log path. |
| |
| @param host: The RemoteHost to collect logs from |
| @param log_path: The remote path to collect the log file from |
| @param dest_path: A path (file or directory) to write the copies logs into |
| """ |
| logging.info("Collecting %s...", log_path) |
| try: |
| host.get_file(log_path, dest_path, preserve_perm=False) |
| except Exception: |
| logging.warning("Collection of %s failed", log_path) |
| |
| |
| |
| def collect_command(host, command, dest_path): |
| """Collects the result of a command on the remote machine. |
| |
| The standard output of the command will be collected and written into the |
| desitionation path. The destination path is assumed to be filename and |
| not a directory. |
| |
| @param host: The RemoteHost to collect from |
| @param command: A shell command to run on the remote machine and capture |
| the output from. |
| @param dest_path: A file path to write the results of the log into |
| """ |
| logging.info("Collecting '%s' ...", command) |
| devnull = open("/dev/null", "w") |
| try: |
| try: |
| result = host.run(command, stdout_tee=devnull).stdout |
| utils.open_write_close(dest_path, result) |
| except Exception, e: |
| logging.warning("Collection of '%s' failed:\n%s", command, e) |
| finally: |
| devnull.close() |
| |
| |
| def collect_uncollected_logs(host): |
| """Collects any leftover uncollected logs from the client. |
| |
| @param host: The RemoteHost to collect from |
| """ |
| if host.job: |
| try: |
| logs = host.job.get_client_logs() |
| for hostname, remote_path, local_path in logs: |
| if hostname == host.hostname: |
| logging.info("Retrieving logs from %s:%s into %s", |
| hostname, remote_path, local_path) |
| host.get_file(remote_path + "/", local_path + "/") |
| except Exception, e: |
| logging.warning("Error while trying to collect stranded " |
| "Autotest client logs: %s", e) |
| |
| |
| def collect_messages(host): |
| """Collects the 'new' contents of /var/log/messages. |
| |
| If host.VAR_LOG_MESSAGE_COPY_PATH is on the remote machine, collects |
| the contents of /var/log/messages excluding whatever initial contents |
| are already present in host.VAR_LOG_MESSAGE_COPY_PATH. If it is not |
| present, simply collects the entire contents of /var/log/messages. |
| |
| @param host: The RemoteHost to collect from |
| """ |
| crashinfo_dir = get_crashinfo_dir(host) |
| |
| try: |
| # paths to the messages files |
| messages = os.path.join(crashinfo_dir, "messages") |
| messages_raw = os.path.join(crashinfo_dir, "messages.raw") |
| messages_at_start = os.path.join(crashinfo_dir, "messages.at_start") |
| |
| # grab the files from the remote host |
| collect_log_file(host, host.VAR_LOG_MESSAGES_COPY_PATH, |
| messages_at_start) |
| collect_log_file(host, "/var/log/messages", messages_raw) |
| |
| # figure out how much of messages.raw to skip |
| if os.path.exists(messages_at_start): |
| # if the first lines of the messages at start should match the |
| # first lines of the current messages; if they don't then messages |
| # has been erase or rotated and we just grab all of it |
| first_line_at_start = utils.read_one_line(messages_at_start) |
| first_line_now = utils.read_one_line(messages_raw) |
| if first_line_at_start != first_line_now: |
| size_at_start = 0 |
| else: |
| size_at_start = os.path.getsize(messages_at_start) |
| else: |
| size_at_start = 0 |
| raw_messages_file = open(messages_raw) |
| messages_file = open(messages, "w") |
| raw_messages_file.seek(size_at_start) |
| shutil.copyfileobj(raw_messages_file, messages_file) |
| raw_messages_file.close() |
| messages_file.close() |
| |
| # get rid of the "raw" versions of messages |
| os.remove(messages_raw) |
| if os.path.exists(messages_at_start): |
| os.remove(messages_at_start) |
| except Exception, e: |
| logging.warning("Error while collecting /var/log/messages: %s", e) |