1 # Copyright (c) 2013 The Chromium OS Authors. All rights reserved. 2 # Use of this source code is governed by a BSD-style license that can be 3 # found in the LICENSE file. 4 5 import datetime 6 import re 7 8 from autotest_lib.client.bin import sysinfo 9 from autotest_lib.client.cros import constants 10 from autotest_lib.server import utils 11 from autotest_lib.server.cros import provision 12 13 try: 14 from chromite.lib import metrics 15 except ImportError: 16 metrics = utils.metrics_mock 17 18 19 LABEL_REGEX = r',.*:' 20 _LABEL_UPDATE_DURATION_METRIC = metrics.SecondsDistribution( 21 'chromeos/autotest/provision/label_update_durations') 22 23 # job_labels should be a string like "name:setting,name:setting" 24 # However setting might also contain ',' therefore we need more advanced logic 25 # than split. 26 # non-provisionable labels are currently skipped, so they're safe to pass in. 27 job_labels = locals().get('job_labels') or ','.join(args) 28 labels_list = [] 29 while job_labels: 30 # Split based off of a comma followed by colon regex. 31 split = re.split(LABEL_REGEX, job_labels) 32 # First value found is a proper key value pair. 33 labels_list.append(split[0].strip()) 34 # Remove this key value pair. 35 job_labels = job_labels[len(split[0]):] 36 # If a comma remains at the start of the remaining labels, remove it. 37 # This should happen on every loop except the last one. 38 if job_labels.startswith(','): 39 job_labels = job_labels.lstrip(',') 40 41 42 def provision_machine(machine): 43 """ 44 Run the appropriate provisioning tests to make the machine's labels match 45 those given in job_labels. 46 """ 47 job.record('START', None, 'provision') 48 host = hosts.create_target_machine(machine, try_lab_servo=True) 49 try: 50 job.sysinfo.add_logdir( 51 sysinfo.logdir(constants.AUTOUPDATE_PRESERVE_LOG)) 52 provision.run_special_task_actions(job, host, labels_list, 53 provision.Provision) 54 host.verify() 55 56 # Let's update the labels on the host and track how long it takes. 57 # Don't fail while updating the labels, provision is flaky enough by 58 # itself. 59 label_update_success = True 60 start_time = datetime.datetime.now() 61 try: 62 host.update_labels() 63 except Exception: 64 logging.exception('Exception while updating labels.') 65 label_update_success = False 66 67 end_time = datetime.datetime.now() 68 duration = (end_time - start_time).total_seconds() 69 70 fields = {'success': label_update_success, 71 # TODO(kevcheng): Need a better way of classifying testbeds. 72 'board': (host.get_board() 73 if not utils.machine_is_testbed(machine) 74 else host.get_platform())} 75 _LABEL_UPDATE_DURATION_METRIC.add(duration, fields=fields) 76 except Exception: 77 logging.exception('Provision failed due to Exception.') 78 job.record('END FAIL', None, 'provision') 79 # Raising a blank exception is done here because any message we can 80 # give here would be less useful than whatever the failing test left as 81 # its own exception message. 82 # 83 # The gory details of how raising a blank exception accomplishes this 84 # is as follows: 85 # 86 # The scheduler only looks at the return code of autoserv to see if 87 # the special task failed. Therefore we need python to exit because 88 # of an unhandled exception or because someone called sys.exit(1). 89 # 90 # We can't call sys.exit, since there's post-job-running logic (like 91 # cleanup) that we'd be skipping out on. So therefore, we need to 92 # raise an exception. However, if we raise an exception, this 93 # exception ends up triggering server_job to write an INFO line with 94 # job_abort_reason equal to str(e), which the tko parser then picks 95 # up as the reason field for the job when the status.log we generate is 96 # parsed as the job's results. 97 # 98 # So therefore, we raise a blank exception, which then generates an 99 # empty job_abort_reason which the tko parser ignores just inserts as 100 # a SERVER_JOB failure with no reason, which we then ignore at suite 101 # results reporting time. 102 raise Exception('') 103 else: 104 # If we finish successfully, nothing in autotest ever looks at the 105 # status.log, so it's purely for human consumption and tracability. 106 hostname = utils.get_hostname_from_machine(machine) 107 job.record('END GOOD', None, 'provision', 108 '%s provisioned successfully' % hostname) 109 110 111 job.parallel_simple(provision_machine, machines) 112 113 # vim: set syntax=python : 114
