Source code for wlauto.core.execution

#    Copyright 2013-2015 ARM Limited
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# See the License for the specific language governing permissions and
# limitations under the License.

# pylint: disable=no-member

This module contains the execution logic for Workload Automation. It defines the
following actors:

    WorkloadSpec: Identifies the workload to be run and defines parameters under
                  which it should be executed.

    Executor: Responsible for the overall execution process. It instantiates
              and/or intialises the other actors, does any necessary vaidation
              and kicks off the whole process.

    Execution Context: Provides information about the current state of run
                       execution to instrumentation.

    RunInfo: Information about the current run.

    Runner: This executes workload specs that are passed to it. It goes through
            stages of execution, emitting an appropriate signal at each step to
            allow instrumentation to do its stuff.

import os
import uuid
import logging
import subprocess
import random
from copy import copy
from datetime import datetime
from contextlib import contextmanager
from collections import Counter, defaultdict, OrderedDict
from itertools import izip_longest

import wlauto.core.signal as signal
from wlauto.core import instrumentation
from wlauto.core.bootstrap import settings
from wlauto.core.extension import Artifact
from wlauto.core.configuration import RunConfiguration
from wlauto.core.extension_loader import ExtensionLoader
from wlauto.core.resolver import ResourceResolver
from wlauto.core.result import ResultManager, IterationResult, RunResult
from wlauto.exceptions import (WAError, ConfigError, TimeoutError, InstrumentError,
                               DeviceError, DeviceNotRespondingError, ResourceError,
from wlauto.utils.misc import ensure_directory_exists as _d, get_traceback, merge_dicts, format_duration

# The maximum number of reboot attempts for an iteration.

# If something went wrong during device initialization, wait this
# long (in seconds) before retrying. This is necessary, as retrying
# immediately may not give the device enough time to recover to be able
# to reboot.

[docs]class RunInfo(object): """ Information about the current run, such as its unique ID, run time, etc. """ def __init__(self, config): self.config = config self.uuid = uuid.uuid4() self.start_time = None self.end_time = None self.duration = None self.project = config.project self.project_stage = config.project_stage self.run_name = config.run_name or "{}_{}".format(os.path.split(settings.output_directory)[1], datetime.utcnow().strftime("%Y-%m-%d_%H-%M-%S")) self.notes = None self.device_properties = {}
[docs] def to_dict(self): d = copy(self.__dict__) d['uuid'] = str(self.uuid) del d['config'] d = merge_dicts(d, self.config.to_dict()) return d
[docs]class ExecutionContext(object): """ Provides a context for instrumentation. Keeps track of things like current workload and iteration. This class also provides two status members that can be used by workloads and instrumentation to keep track of arbitrary state. ``result`` is reset on each new iteration of a workload; run_status is maintained throughout a Workload Automation run. """ # These are the artifacts generated by the core framework. default_run_artifacts = [ Artifact('runlog', 'run.log', 'log', mandatory=True, description='The log for the entire run.'), ] @property def current_iteration(self): if self.current_job: spec_id = return self.job_iteration_counts[spec_id] else: return None @property def job_status(self): if not self.current_job: return None return self.current_job.result.status @property def workload(self): return getattr(self.spec, 'workload', None) @property def spec(self): return getattr(self.current_job, 'spec', None) @property def result(self): return getattr(self.current_job, 'result', self.run_result) def __init__(self, device, config): self.device = device self.config = config self.reboot_policy = config.reboot_policy self.output_directory = None self.current_job = None self.resolver = None self.last_error = None self.run_info = None self.run_result = None self.run_output_directory = settings.output_directory self.host_working_directory = settings.meta_directory self.iteration_artifacts = None self.run_artifacts = copy(self.default_run_artifacts) self.job_iteration_counts = defaultdict(int) self.aborted = False self.runner = None if settings.agenda: self.run_artifacts.append(Artifact('agenda', os.path.join(self.host_working_directory, os.path.basename(settings.agenda)), 'meta', mandatory=True, description='Agenda for this run.')) for i, filepath in enumerate(settings.loaded_files, 1): name = 'config_{}'.format(i) path = os.path.join(self.host_working_directory, name + os.path.splitext(filepath)[1]) self.run_artifacts.append(Artifact(name, path, kind='meta', mandatory=True, description='Config file used for the run.'))
[docs] def initialize(self): if not os.path.isdir(self.run_output_directory): os.makedirs(self.run_output_directory) self.output_directory = self.run_output_directory self.resolver = ResourceResolver(self.config) self.run_info = RunInfo(self.config) self.run_result = RunResult(self.run_info, self.run_output_directory)
[docs] def next_job(self, job): """Invoked by the runner when starting a new iteration of workload execution.""" self.current_job = job self.job_iteration_counts[] += 1 if not self.aborted: outdir_name = '_'.join(map(str, [self.spec.label,, self.current_iteration])) self.output_directory = _d(os.path.join(self.run_output_directory, outdir_name)) self.iteration_artifacts = [wa for wa in self.workload.artifacts] self.current_job.result.iteration = self.current_iteration self.current_job.result.output_directory = self.output_directory
[docs] def end_job(self): if self.current_job.result.status == IterationResult.ABORTED: self.aborted = True self.current_job = None self.output_directory = self.run_output_directory
[docs] def add_metric(self, *args, **kwargs): self.result.add_metric(*args, **kwargs)
[docs] def add_classifiers(self, **kwargs): self.result.classifiers.update(kwargs)
[docs] def add_artifact(self, name, path, kind, *args, **kwargs): if self.current_job is None: self.add_run_artifact(name, path, kind, *args, **kwargs) else: self.add_iteration_artifact(name, path, kind, *args, **kwargs)
[docs] def add_run_artifact(self, name, path, kind, *args, **kwargs): path = _check_artifact_path(path, self.run_output_directory) self.run_artifacts.append(Artifact(name, path, kind, Artifact.ITERATION, *args, **kwargs))
[docs] def add_iteration_artifact(self, name, path, kind, *args, **kwargs): path = _check_artifact_path(path, self.output_directory) self.iteration_artifacts.append(Artifact(name, path, kind, Artifact.RUN, *args, **kwargs))
[docs] def get_artifact(self, name): if self.iteration_artifacts: for art in self.iteration_artifacts: if == name: return art for art in self.run_artifacts: if == name: return art return None
def _check_artifact_path(path, rootpath): if path.startswith(rootpath): return os.path.abspath(path) rootpath = os.path.abspath(rootpath) full_path = os.path.join(rootpath, path) if not os.path.isfile(full_path): raise ValueError('Cannot add artifact because {} does not exist.'.format(full_path)) return full_path
[docs]class Executor(object): """ The ``Executor``'s job is to set up the execution context and pass to a ``Runner`` along with a loaded run specification. Once the ``Runner`` has done its thing, the ``Executor`` performs some final reporint before returning. The initial context set up involves combining configuration from various sources, loading of requided workloads, loading and installation of instruments and result processors, etc. Static validation of the combined configuration is also performed. """ # pylint: disable=R0915 def __init__(self): self.logger = logging.getLogger('Executor') self.error_logged = False self.warning_logged = False self.config = None self.ext_loader = None self.device = None self.context = None
[docs] def execute(self, agenda, selectors=None): # NOQA """ Execute the run specified by an agenda. Optionally, selectors may be used to only selecute a subset of the specified agenda. Params:: :agenda: an ``Agenda`` instance to be executed. :selectors: A dict mapping selector name to the coresponding values. **Selectors** Currently, the following seectors are supported: ids The value must be a sequence of workload specfication IDs to be executed. Note that if sections are specified inthe agenda, the workload specifacation ID will be a combination of the section and workload IDs. """ signal.connect(self._error_signalled_callback, signal.ERROR_LOGGED) signal.connect(self._warning_signalled_callback, signal.WARNING_LOGGED)'Initializing') self.ext_loader = ExtensionLoader(packages=settings.extension_packages, paths=settings.extension_paths) self.logger.debug('Loading run configuration.') self.config = RunConfiguration(self.ext_loader) for filepath in settings.get_config_paths(): self.config.load_config(filepath) self.config.set_agenda(agenda, selectors) self.config.finalize() config_outfile = os.path.join(settings.meta_directory, 'run_config.json') with open(config_outfile, 'w') as wfh: self.config.serialize(wfh) self.logger.debug('Initialising device configuration.') if not self.config.device: raise ConfigError('Make sure a device is specified in the config.') self.device = self.ext_loader.get_device(self.config.device, **self.config.device_config) self.device.validate() self.context = ExecutionContext(self.device, self.config) self.logger.debug('Loading resource discoverers.') self.context.initialize() self.context.resolver.load() self.context.add_artifact('run_config', config_outfile, 'meta') self.logger.debug('Installing instrumentation') for name, params in self.config.instrumentation.iteritems(): instrument = self.ext_loader.get_instrument(name, self.device, **params) instrumentation.install(instrument) instrumentation.validate() self.logger.debug('Installing result processors') result_manager = ResultManager() for name, params in self.config.result_processors.iteritems(): processor = self.ext_loader.get_result_processor(name, **params) result_manager.install(processor) result_manager.validate() self.logger.debug('Loading workload specs') for workload_spec in self.config.workload_specs: workload_spec.load(self.device, self.ext_loader) workload_spec.workload.init_resources(self.context) workload_spec.workload.validate() if self.config.flashing_config: if not self.device.flasher: msg = 'flashing_config specified for {} device that does not support flashing.' raise ConfigError(msg.format( self.logger.debug('Flashing the device') self.device.flasher.flash(self.device)'Running workloads') runner = self._get_runner(result_manager) runner.init_queue(self.config.workload_specs) if getattr(self.config, "clean_up", False):'Clearing WA files from device') self.device.delete_file(self.device.binaries_directory) self.device.delete_file(self.device.working_directory) self.execute_postamble()
[docs] def execute_postamble(self): """ This happens after the run has completed. The overall results of the run are summarised to the user. """ result = self.context.run_result counter = Counter() for ir in result.iteration_results: counter[ir.status] += 1'Done.')'Run duration: {}'.format(format_duration(self.context.run_info.duration))) status_summary = 'Ran a total of {} iterations: '.format(sum(self.context.job_iteration_counts.values())) parts = [] for status in IterationResult.values: if status in counter: parts.append('{} {}'.format(counter[status], status)) + ', '.join(parts))'Results can be found in {}'.format(settings.output_directory)) if self.error_logged: self.logger.warn('There were errors during execution.') self.logger.warn('Please see {}'.format(settings.log_file)) elif self.warning_logged: self.logger.warn('There were warnings during execution.') self.logger.warn('Please see {}'.format(settings.log_file))
def _get_runner(self, result_manager): if not self.config.execution_order or self.config.execution_order == 'by_iteration': if self.config.reboot_policy == 'each_spec':'each_spec reboot policy with the default by_iteration execution order is ' 'equivalent to each_iteration policy.') runnercls = ByIterationRunner elif self.config.execution_order in ['classic', 'by_spec']: runnercls = BySpecRunner elif self.config.execution_order == 'by_section': runnercls = BySectionRunner elif self.config.execution_order == 'random': runnercls = RandomRunner else: raise ConfigError('Unexpected execution order: {}'.format(self.config.execution_order)) return runnercls(self.device, self.context, result_manager) def _error_signalled_callback(self): self.error_logged = True signal.disconnect(self._error_signalled_callback, signal.ERROR_LOGGED) def _warning_signalled_callback(self): self.warning_logged = True signal.disconnect(self._warning_signalled_callback, signal.WARNING_LOGGED)
[docs]class RunnerJob(object): """ Represents a single execution of a ``RunnerJobDescription``. There will be one created for each iteration specified by ``RunnerJobDescription.number_of_iterations``. """ def __init__(self, spec, retry=0): self.spec = spec self.retry = retry self.iteration = None self.result = IterationResult(self.spec)
[docs]class Runner(object): """ This class is responsible for actually performing a workload automation run. The main responsibility of this class is to emit appropriate signals at the various stages of the run to allow things like traces an other instrumentation to hook into the process. This is an abstract base class that defines each step of the run, but not the order in which those steps are executed, which is left to the concrete derived classes. """ class _RunnerError(Exception): """Internal runner error.""" pass @property def config(self): return self.context.config @property def current_job(self): if self.job_queue: return self.job_queue[0] return None @property def previous_job(self): if self.completed_jobs: return self.completed_jobs[-1] return None @property def next_job(self): if self.job_queue: if len(self.job_queue) > 1: return self.job_queue[1] return None @property def spec_changed(self): if self.previous_job is None and self.current_job is not None: # Start of run return True if self.previous_job is not None and self.current_job is None: # End of run return True return != @property def spec_will_change(self): if self.current_job is None and self.next_job is not None: # Start of run return True if self.current_job is not None and self.next_job is None: # End of run return True return != def __init__(self, device, context, result_manager): self.device = device self.context = context self.result_manager = result_manager self.logger = logging.getLogger('Runner') self.job_queue = [] self.completed_jobs = [] self._initial_reset = True
[docs] def init_queue(self, specs): raise NotImplementedError()
[docs] def run(self): # pylint: disable=too-many-branches self._send(signal.RUN_START) self._initialize_run() try: while self.job_queue: try: self._init_job() self._run_job() except KeyboardInterrupt: self.current_job.result.status = IterationResult.ABORTED raise except Exception, e: # pylint: disable=broad-except self.current_job.result.status = IterationResult.FAILED self.current_job.result.add_event(e.message) if isinstance(e, DeviceNotRespondingError):'Device appears to be unresponsive.') if self.context.reboot_policy.can_reboot and self.device.can('reset_power'):'Attempting to hard-reset the device...') try: self.device.boot(hard=True) self.device.connect() except DeviceError: # hard_boot not implemented for the device. raise e else: raise e else: # not a DeviceNotRespondingError self.logger.error(e) finally: self._finalize_job() except KeyboardInterrupt:'Got CTRL-C. Finalizing run... (CTRL-C again to abort).') # Skip through the remaining jobs. while self.job_queue: self.context.next_job(self.current_job) self.current_job.result.status = IterationResult.ABORTED self._finalize_job() except DeviceNotRespondingError:'Device unresponsive and recovery not possible. Skipping the rest of the run.') self.context.aborted = True while self.job_queue: self.context.next_job(self.current_job) self.current_job.result.status = IterationResult.SKIPPED self._finalize_job() instrumentation.enable_all() self._finalize_run() self._process_results() self.result_manager.finalize(self.context) self._send(signal.RUN_END)
def _initialize_run(self): self.context.runner = self self.context.run_info.start_time = datetime.utcnow() self._connect_to_device()'Initializing device') self.device.initialize(self.context)'Initializing workloads') for workload_spec in self.context.config.workload_specs: workload_spec.workload.initialize(self.context) props = self.device.get_properties(self.context) self.context.run_info.device_properties = props self.result_manager.initialize(self.context) self._send(signal.RUN_INIT) if instrumentation.check_failures(): raise InstrumentError('Detected failure(s) during instrumentation initialization.') def _connect_to_device(self): if self.context.reboot_policy.perform_initial_boot: try: self.device.connect() except DeviceError: # device may be offline if self.device.can('reset_power'): with self._signal_wrap('INITIAL_BOOT'): self.device.boot(hard=True) else: raise DeviceError('Cannot connect to device for initial reboot; ' 'and device does not support hard reset.') else: # successfully connected'\tBooting device') with self._signal_wrap('INITIAL_BOOT'): self._reboot_device() else:'Connecting to device') self.device.connect() def _init_job(self): self.current_job.result.status = IterationResult.RUNNING self.context.next_job(self.current_job) def _run_job(self): # pylint: disable=too-many-branches spec = self.current_job.spec if not spec.enabled:'Skipping workload %s (iteration %s)', spec, self.context.current_iteration) self.current_job.result.status = IterationResult.SKIPPED return'Running workload %s (iteration %s)', spec, self.context.current_iteration) if spec.flash: if not self.context.reboot_policy.can_reboot: raise ConfigError('Cannot flash as reboot_policy does not permit rebooting.') if not self.device.can('flash'): raise DeviceError('Device does not support flashing.') self._flash_device(spec.flash) elif not self.completed_jobs: # Never reboot on the very fist job of a run, as we would have done # the initial reboot if a reboot was needed. pass elif self.context.reboot_policy.reboot_on_each_spec and self.spec_changed: self.logger.debug('Rebooting on spec change.') self._reboot_device() elif self.context.reboot_policy.reboot_on_each_iteration: self.logger.debug('Rebooting on iteration.') self._reboot_device() instrumentation.disable_all() instrumentation.enable(spec.instrumentation) self.device.start() if self.spec_changed: self._send(signal.WORKLOAD_SPEC_START) self._send(signal.ITERATION_START) try: setup_ok = False with self._handle_errors('Setting up device parameters'): self.device.set_runtime_parameters(spec.runtime_parameters) setup_ok = True if setup_ok: with self._handle_errors('running {}'.format( self.current_job.result.status = IterationResult.RUNNING self._run_workload_iteration(spec.workload) else:'\tSkipping the rest of the iterations for this spec.') spec.enabled = False except KeyboardInterrupt: self._send(signal.ITERATION_END) self._send(signal.WORKLOAD_SPEC_END) raise else: self._send(signal.ITERATION_END) if self.spec_will_change or not spec.enabled: self._send(signal.WORKLOAD_SPEC_END) finally: self.device.stop() def _finalize_job(self): self.context.run_result.iteration_results.append(self.current_job.result) job = self.job_queue.pop(0) job.iteration = self.context.current_iteration if job.result.status in self.config.retry_on_status: if job.retry >= self.config.max_retries: self.logger.error('Exceeded maximum number of retries. Abandoning job.') else:'Job status was {}. Retrying...'.format(job.result.status)) retry_job = RunnerJob(job.spec, job.retry + 1) self.job_queue.insert(0, retry_job) self.completed_jobs.append(job) self.context.end_job() def _finalize_run(self):'Finalizing workloads') for workload_spec in self.context.config.workload_specs: workload_spec.workload.finalize(self.context)'Finalizing.') self._send(signal.RUN_FIN) with self._handle_errors('Disconnecting from the device'): self.device.disconnect() info = self.context.run_info info.end_time = datetime.utcnow() info.duration = info.end_time - info.start_time def _process_results(self):'Processing overall results') with self._signal_wrap('OVERALL_RESULTS_PROCESSING'): if instrumentation.check_failures(): self.context.run_result.non_iteration_errors = True self.result_manager.process_run_result(self.context.run_result, self.context) def _run_workload_iteration(self, workload):'\tSetting up') with self._signal_wrap('WORKLOAD_SETUP'): try: workload.setup(self.context) except:'\tSkipping the rest of the iterations for this spec.') self.current_job.spec.enabled = False raise try:'\tExecuting') with self._handle_errors('Running workload'): with self._signal_wrap('WORKLOAD_EXECUTION'):'\tProcessing result') self._send(signal.BEFORE_WORKLOAD_RESULT_UPDATE) try: if self.current_job.result.status != IterationResult.FAILED: with self._handle_errors('Processing workload result', on_error_status=IterationResult.PARTIAL): workload.update_result(self.context) self._send(signal.SUCCESSFUL_WORKLOAD_RESULT_UPDATE) if self.current_job.result.status == IterationResult.RUNNING: self.current_job.result.status = IterationResult.OK finally: self._send(signal.AFTER_WORKLOAD_RESULT_UPDATE) finally:'\tTearing down') with self._handle_errors('Tearing down workload', on_error_status=IterationResult.NONCRITICAL): with self._signal_wrap('WORKLOAD_TEARDOWN'): workload.teardown(self.context) self.result_manager.add_result(self.current_job.result, self.context) def _flash_device(self, flashing_params): with self._signal_wrap('FLASHING'): self.device.flash(**flashing_params) self.device.connect() def _reboot_device(self): with self._signal_wrap('BOOT'): for reboot_attempts in xrange(MAX_REBOOT_ATTEMPTS): if reboot_attempts:'\tRetrying...') with self._handle_errors('Rebooting device'): self.device.boot(**self.current_job.spec.boot_parameters) break else: raise DeviceError('Could not reboot device; max reboot attempts exceeded.') self.device.connect() def _send(self, s): signal.send(s, self, self.context) def _take_screenshot(self, filename): if self.context.output_directory: filepath = os.path.join(self.context.output_directory, filename) else: filepath = os.path.join(settings.output_directory, filename) self.device.capture_screen(filepath) def _take_uiautomator_dump(self, filename): if self.context.output_directory: filepath = os.path.join(self.context.output_directory, filename) else: filepath = os.path.join(settings.output_directory, filename) self.device.capture_ui_hierarchy(filepath) @contextmanager def _handle_errors(self, action, on_error_status=IterationResult.FAILED): try: if action is not None: self.logger.debug(action) yield except (KeyboardInterrupt, DeviceNotRespondingError): raise except (WAError, TimeoutError), we: if self.current_job: self.current_job.result.status = on_error_status self.current_job.result.add_event(str(we)) # There is no point in taking a screenshot ect if the issue is not # with the device but with the host or a missing resource if not (isinstance(we, ResourceError) or isinstance(we, HostError)): try: self._take_screenshot('error.png') if self.device.platform == 'android': self._take_uiautomator_dump('error.uix') except Exception, e: # pylint: disable=W0703 # We're already in error state, so the fact that taking a # screenshot failed is not surprising... pass if action: action = action[0].lower() + action[1:] self.logger.error('Error while {}:\n\t{}'.format(action, str(we).replace("\n", "\n\t"))) except Exception, e: # pylint: disable=W0703 error_text = '{}("{}")'.format(e.__class__.__name__, e) if self.current_job: self.current_job.result.status = on_error_status self.current_job.result.add_event(error_text) self.logger.error('Error while {}'.format(action)) self.logger.error(error_text) if isinstance(e, subprocess.CalledProcessError): self.logger.error('Got:') self.logger.error(e.output) tb = get_traceback() self.logger.error(tb) @contextmanager def _signal_wrap(self, signal_name): """Wraps the suite in before/after signals, ensuring that after signal is always sent.""" before_signal = getattr(signal, 'BEFORE_' + signal_name) success_signal = getattr(signal, 'SUCCESSFUL_' + signal_name) after_signal = getattr(signal, 'AFTER_' + signal_name) try: self._send(before_signal) yield self._send(success_signal) finally: self._send(after_signal)
[docs]class BySpecRunner(Runner): """ This is that "classic" implementation that executes all iterations of a workload spec before proceeding onto the next spec. """
[docs] def init_queue(self, specs): jobs = [[RunnerJob(s) for _ in xrange(s.number_of_iterations)] for s in specs] # pylint: disable=unused-variable self.job_queue = [j for spec_jobs in jobs for j in spec_jobs]
[docs]class BySectionRunner(Runner): """ Runs the first iteration for all benchmarks first, before proceeding to the next iteration, i.e. A1, B1, C1, A2, B2, C2... instead of A1, A1, B1, B2, C1, C2... If multiple sections where specified in the agenda, this will run all specs for the first section followed by all specs for the seciod section, etc. e.g. given sections X and Y, and global specs A and B, with 2 iterations, this will run X.A1, X.B1, Y.A1, Y.B1, X.A2, X.B2, Y.A2, Y.B2 """
[docs] def init_queue(self, specs): jobs = [[RunnerJob(s) for _ in xrange(s.number_of_iterations)] for s in specs] self.job_queue = [j for spec_jobs in izip_longest(*jobs) for j in spec_jobs if j]
[docs]class ByIterationRunner(Runner): """ Runs the first iteration for all benchmarks first, before proceeding to the next iteration, i.e. A1, B1, C1, A2, B2, C2... instead of A1, A1, B1, B2, C1, C2... If multiple sections where specified in the agenda, this will run all sections for the first global spec first, followed by all sections for the second spec, etc. e.g. given sections X and Y, and global specs A and B, with 2 iterations, this will run X.A1, Y.A1, X.B1, Y.B1, X.A2, Y.A2, X.B2, Y.B2 """
[docs] def init_queue(self, specs): sections = OrderedDict() for s in specs: if s.section_id not in sections: sections[s.section_id] = [] sections[s.section_id].append(s) specs = [s for section_specs in izip_longest(*sections.values()) for s in section_specs if s] jobs = [[RunnerJob(s) for _ in xrange(s.number_of_iterations)] for s in specs] self.job_queue = [j for spec_jobs in izip_longest(*jobs) for j in spec_jobs if j]
[docs]class RandomRunner(Runner): """ This will run specs in a random order. """
[docs] def init_queue(self, specs): jobs = [[RunnerJob(s) for _ in xrange(s.number_of_iterations)] for s in specs] # pylint: disable=unused-variable all_jobs = [j for spec_jobs in jobs for j in spec_jobs] random.shuffle(all_jobs) self.job_queue = all_jobs