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#!/usr/bin/env python
# -*- coding: utf-8 -*-
import os
import time
import argparse
import redis
from redis.exceptions import ConnectionError
from rq import use_redis, Queue, Worker
from rq.utils import gettermsize, make_colorizer
red = make_colorizer('darkred')
green = make_colorizer('darkgreen')
yellow = make_colorizer('darkyellow')
def pad(s, pad_to_length):
"""Pads the given string to the given length."""
return ('%-' + '%ds' % pad_to_length) % (s,)
def get_scale(x):
"""Finds the lowest scale where x <= scale."""
scales = [20, 50, 100, 200, 400, 600, 800, 1000]
for scale in scales:
if x <= scale:
return scale
return x
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def state_symbol(state):
symbols = {
'busy': red(u'\u25CF'),
'idle': green(u'\u25CB'),
}
try:
return symbols[state]
except KeyError:
return state
def show_queues(args):
while True:
if len(args.queues):
qs = map(Queue, args.queues)
else:
qs = Queue.all()
num_jobs = 0
termwidth, _ = gettermsize()
chartwidth = min(20, termwidth - 20)
max_count = 0
counts = dict()
for q in qs:
count = q.count
counts[q] = count
max_count = max(max_count, count)
scale = get_scale(max_count)
ratio = chartwidth * 1.0 / scale
if args.interval:
os.system('clear')
for q in qs:
count = counts[q]
if not args.raw:
chart = green('|' + '█' * int(ratio * count))
line = '%-12s %s %d' % (q.name, chart, count)
else:
line = '%-12s %d' % (q.name, count)
print(line)
num_jobs += count
# Print summary when not in raw mode
if not args.raw:
print('%d queues, %d jobs total' % (len(qs), num_jobs))
if args.interval:
time.sleep(args.interval)
else:
break
def show_workers(args):
while True:
qs = Queue.all()
ws = Worker.all()
if args.interval:
os.system('clear')
queues = {qname: [] for qname in qs}
for w in ws:
for q in w.queues:
if not q in queues:
queues[q] = []
queues[q].append(w)
if args.by_queue:
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max_qname = max(map(lambda q: len(q.name), queues.keys())) if queues else 0
for q in queues:
if queues[q]:
queues_str = ", ".join(sorted(map(lambda w: '%s (%s)' % (w.name, state_symbol(w.state)), queues[q])))
else:
queues_str = ''
print '%s %s' % (pad(q.name + ':', max_qname + 1), queues_str)
else:
for w in ws:
print '%s %s: %s' % (w.name, state_symbol(w.state), ', '.join(w.queue_names()))
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print '%d workers, %d queues' % (len(ws), len(queues))
if args.interval:
time.sleep(args.interval)
else:
break
def parse_args():
parser = argparse.ArgumentParser(description='RQ command-line monitor.')
parser.add_argument('--host', '-H', default='localhost', help='The Redis hostname (default: localhost)')
parser.add_argument('--port', '-p', type=int, default=6379, help='The Redis portnumber (default: 6379)')
parser.add_argument('--db', '-d', type=int, default=0, help='The Redis database (default: 0)')
parent_parser = argparse.ArgumentParser(add_help=False)
parent_parser.add_argument('--interval', '-i', metavar='N', type=float, default=0, help='Updates stats every N seconds (default: don\'t poll)')
subparsers = parser.add_subparsers()
queues_p = subparsers.add_parser('queues', parents=[parent_parser], help='Show queue info')
queues_p.add_argument('--raw', '-r', action='store_true', default=False, help='Print only the raw numbers, no bar charts')
queues_p.add_argument('queues', nargs='*', help='The queues to poll')
queues_p.set_defaults(func=show_queues)
workers_p = subparsers.add_parser('workers', parents=[parent_parser], help='Show worker activity')
workers_p.add_argument('--by-queue', '-Q', dest='by_queue', default=False, action='store_true', help='Shows workers by queue')
workers_p.set_defaults(func=show_workers)
return parser.parse_args()
def main():
args = parse_args()
# Setup connection to Redis
redis_conn = redis.Redis(host=args.host, port=args.port, db=args.db)
use_redis(redis_conn)
try:
args.func(args)
except ConnectionError as e:
print(e)
if __name__ == '__main__':
main()