#!/usr/bin/env python
# vim: set sw=4 et:

import argparse
import os
import sys
import logging
import brozzler
import brozzler.hq
import signal

arg_parser = argparse.ArgumentParser(prog=os.path.basename(__file__),
        description="brozzler-hq - headquarters of distributed brozzler crawl",
        formatter_class=argparse.ArgumentDefaultsHelpFormatter)
arg_parser.add_argument("-d", "--db", dest="db_file", default="./brozzler-hq.db",
        help="sqlite3 database filename; if the file does not exist, it will be created")
arg_parser.add_argument('-u', '--amqp-url', dest='amqp_url', default='amqp://guest:guest@localhost:5672/%2f',
        help='URL identifying the amqp server to talk to')
arg_parser.add_argument("-v", "--verbose", dest="log_level",
        action="store_const", default=logging.INFO, const=logging.DEBUG)
arg_parser.add_argument("--version", action="version",
        version="brozzler {} - {}".format(brozzler.version, os.path.basename(__file__)))
args = arg_parser.parse_args(args=sys.argv[1:])

logging.basicConfig(stream=sys.stdout, level=args.log_level,
        format="%(asctime)s %(process)d %(levelname)s %(threadName)s %(name)s.%(funcName)s(%(filename)s:%(lineno)d) %(message)s")

def sigterm(signum, frame):
    raise brozzler.ShutdownRequested("shutdown requested (caught SIGTERM)")
def sigint(signum, frame):
    raise brozzler.ShutdownRequested("shutdown requested (caught SIGINT)")

signal.signal(signal.SIGTERM, sigterm)
signal.signal(signal.SIGINT, sigint)

logging.info("brozzler-hq starting")

db = brozzler.hq.BrozzlerHQDb(db_file=args.db_file)
hq = brozzler.hq.BrozzlerHQ(amqp_url=args.amqp_url, db=db)

try:
    hq.run()
except brozzler.ShutdownRequested as e:
    logging.info("{}".format(e))