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Python

# -*- coding: utf-8 -*-
"""
RQ command line tool
"""
from __future__ import (absolute_import, division, print_function,
unicode_literals)
from functools import update_wrapper
import os
import sys
import click
from redis.exceptions import ConnectionError
from rq import Connection, __version__ as version
from rq.cli.helpers import (read_config_file, refresh,
setup_loghandlers_from_args,
show_both, show_queues, show_workers, CliConfig)
from rq.contrib.legacy import cleanup_ghosts
from rq.defaults import (DEFAULT_CONNECTION_CLASS, DEFAULT_JOB_CLASS,
DEFAULT_QUEUE_CLASS, DEFAULT_WORKER_CLASS,
DEFAULT_RESULT_TTL, DEFAULT_WORKER_TTL,
DEFAULT_JOB_MONITORING_INTERVAL,
DEFAULT_LOGGING_FORMAT, DEFAULT_LOGGING_DATE_FORMAT)
from rq.exceptions import InvalidJobOperationError
from rq.registry import FailedJobRegistry
from rq.utils import import_attribute
from rq.suspension import (suspend as connection_suspend,
resume as connection_resume, is_suspended)
# Disable the warning that Click displays (as of Click version 5.0) when users
# use unicode_literals in Python 2.
# See http://click.pocoo.org/dev/python3/#unicode-literals for more details.
click.disable_unicode_literals_warning = True
shared_options = [
click.option('--url', '-u',
envvar='RQ_REDIS_URL',
help='URL describing Redis connection details.'),
click.option('--config', '-c',
envvar='RQ_CONFIG',
help='Module containing RQ settings.'),
click.option('--worker-class', '-w',
envvar='RQ_WORKER_CLASS',
default=DEFAULT_WORKER_CLASS,
help='RQ Worker class to use'),
click.option('--job-class', '-j',
envvar='RQ_JOB_CLASS',
default=DEFAULT_JOB_CLASS,
help='RQ Job class to use'),
click.option('--queue-class',
envvar='RQ_QUEUE_CLASS',
default=DEFAULT_QUEUE_CLASS,
help='RQ Queue class to use'),
click.option('--connection-class',
envvar='RQ_CONNECTION_CLASS',
default=DEFAULT_CONNECTION_CLASS,
help='Redis client class to use'),
click.option('--path', '-P',
default='.',
help='Specify the import path.',
multiple=True)
]
def pass_cli_config(func):
# add all the shared options to the command
for option in shared_options:
func = option(func)
# pass the cli config object into the command
def wrapper(*args, **kwargs):
ctx = click.get_current_context()
cli_config = CliConfig(**kwargs)
return ctx.invoke(func, cli_config, *args[1:], **kwargs)
return update_wrapper(wrapper, func)
@click.group()
@click.version_option(version)
def main():
"""RQ command line tool."""
pass
@main.command()
@click.option('--all', '-a', is_flag=True, help='Empty all queues')
@click.argument('queues', nargs=-1)
@pass_cli_config
def empty(cli_config, all, queues, **options):
"""Empty given queues."""
if all:
queues = cli_config.queue_class.all(connection=cli_config.connection,
job_class=cli_config.job_class)
else:
queues = [cli_config.queue_class(queue,
connection=cli_config.connection,
job_class=cli_config.job_class)
for queue in queues]
if not queues:
click.echo('Nothing to do')
sys.exit(0)
for queue in queues:
num_jobs = queue.empty()
click.echo('{0} jobs removed from {1} queue'.format(num_jobs, queue.name))
@main.command()
@click.option('--all', '-a', is_flag=True, help='Requeue all failed jobs')
@click.option('--queue', required=True, type=str)
@click.argument('job_ids', nargs=-1)
@pass_cli_config
def requeue(cli_config, queue, all, job_class, job_ids, **options):
"""Requeue failed jobs."""
failed_job_registry = FailedJobRegistry(queue,
connection=cli_config.connection)
if all:
job_ids = failed_job_registry.get_job_ids()
if not job_ids:
click.echo('Nothing to do')
sys.exit(0)
click.echo('Requeueing {0} jobs from failed queue'.format(len(job_ids)))
fail_count = 0
with click.progressbar(job_ids) as job_ids:
for job_id in job_ids:
try:
failed_job_registry.requeue(job_id)
except InvalidJobOperationError:
fail_count += 1
if fail_count > 0:
click.secho('Unable to requeue {0} jobs from failed job registry'.format(fail_count), fg='red')
@main.command()
@click.option('--interval', '-i', type=float, help='Updates stats every N seconds (default: don\'t poll)')
@click.option('--raw', '-r', is_flag=True, help='Print only the raw numbers, no bar charts')
@click.option('--only-queues', '-Q', is_flag=True, help='Show only queue info')
@click.option('--only-workers', '-W', is_flag=True, help='Show only worker info')
@click.option('--by-queue', '-R', is_flag=True, help='Shows workers by queue')
@click.argument('queues', nargs=-1)
@pass_cli_config
def info(cli_config, interval, raw, only_queues, only_workers, by_queue, queues,
**options):
"""RQ command-line monitor."""
if only_queues:
func = show_queues
elif only_workers:
func = show_workers
else:
func = show_both
try:
with Connection(cli_config.connection):
refresh(interval, func, queues, raw, by_queue,
cli_config.queue_class, cli_config.worker_class)
except ConnectionError as e:
click.echo(e)
sys.exit(1)
except KeyboardInterrupt:
click.echo()
sys.exit(0)
@main.command()
@click.option('--burst', '-b', is_flag=True, help='Run in burst mode (quit after all work is done)')
@click.option('--logging_level', type=str, default="INFO", help='Set logging level')
@click.option('--log-format', type=str, default=DEFAULT_LOGGING_FORMAT, help='Set the format of the logs')
@click.option('--date-format', type=str, default=DEFAULT_LOGGING_DATE_FORMAT, help='Set the date format of the logs')
@click.option('--name', '-n', help='Specify a different name')
@click.option('--results-ttl', type=int, default=DEFAULT_RESULT_TTL , help='Default results timeout to be used')
@click.option('--worker-ttl', type=int, default=DEFAULT_WORKER_TTL , help='Default worker timeout to be used')
@click.option('--job-monitoring-interval', type=int, default=DEFAULT_JOB_MONITORING_INTERVAL , help='Default job monitoring interval to be used')
@click.option('--disable-job-desc-logging', is_flag=True, help='Turn off description logging.')
@click.option('--verbose', '-v', is_flag=True, help='Show more output')
@click.option('--quiet', '-q', is_flag=True, help='Show less output')
@click.option('--sentry-dsn', envvar='RQ_SENTRY_DSN', help='Report exceptions to this Sentry DSN')
@click.option('--exception-handler', help='Exception handler(s) to use', multiple=True)
@click.option('--pid', help='Write the process ID number to a file at the specified path')
@click.option('--disable-default-exception-handler', '-d', is_flag=True, help='Disable RQ\'s default exception handler')
@click.argument('queues', nargs=-1)
@pass_cli_config
def worker(cli_config, burst, logging_level, name, results_ttl,
worker_ttl, job_monitoring_interval, disable_job_desc_logging, verbose, quiet, sentry_dsn,
exception_handler, pid, disable_default_exception_handler, queues,
log_format, date_format, **options):
"""Starts an RQ worker."""
settings = read_config_file(cli_config.config) if cli_config.config else {}
# Worker specific default arguments
queues = queues or settings.get('QUEUES', ['default'])
sentry_dsn = sentry_dsn or settings.get('SENTRY_DSN')
name = name or settings.get('NAME')
if pid:
with open(os.path.expanduser(pid), "w") as fp:
fp.write(str(os.getpid()))
setup_loghandlers_from_args(verbose, quiet, date_format, log_format)
try:
cleanup_ghosts(cli_config.connection)
exception_handlers = []
for h in exception_handler:
exception_handlers.append(import_attribute(h))
if is_suspended(cli_config.connection):
click.secho('RQ is currently suspended, to resume job execution run "rq resume"', fg='red')
sys.exit(1)
queues = [cli_config.queue_class(queue,
connection=cli_config.connection,
job_class=cli_config.job_class)
for queue in queues]
worker = cli_config.worker_class(
queues, name=name, connection=cli_config.connection,
default_worker_ttl=worker_ttl, default_result_ttl=results_ttl,
job_monitoring_interval=job_monitoring_interval,
job_class=cli_config.job_class, queue_class=cli_config.queue_class,
exception_handlers=exception_handlers or None,
disable_default_exception_handler=disable_default_exception_handler,
log_job_description=not disable_job_desc_logging
)
# Should we configure Sentry?
if sentry_dsn:
from rq.contrib.sentry import register_sentry
register_sentry(sentry_dsn)
worker.work(burst=burst, logging_level=logging_level, date_format=date_format, log_format=log_format)
except ConnectionError as e:
print(e)
sys.exit(1)
@main.command()
@click.option('--duration', help='Seconds you want the workers to be suspended. Default is forever.', type=int)
@pass_cli_config
def suspend(cli_config, duration, **options):
"""Suspends all workers, to resume run `rq resume`"""
if duration is not None and duration < 1:
click.echo("Duration must be an integer greater than 1")
sys.exit(1)
connection_suspend(cli_config.connection, duration)
if duration:
msg = """Suspending workers for {0} seconds. No new jobs will be started during that time, but then will
automatically resume""".format(duration)
click.echo(msg)
else:
click.echo("Suspending workers. No new jobs will be started. But current jobs will be completed")
@main.command()
@pass_cli_config
def resume(cli_config, **options):
"""Resumes processing of queues, that where suspended with `rq suspend`"""
connection_resume(cli_config.connection)
click.echo("Resuming workers.")