import socket
import Queue
from crawlstuff import CommonHelper, TimeBomb
from commonstuff import Config
# config
default_config = {
"HOST": "127.0.0.1",
"PORT": 5000,
"RECV_BUFFER": 4096, # transfer close: beyond limit
"TMP_DIR": "./tmp/",
"QUEUE_FILE": "queue.pkl",
"TIME_OUT": 60 # a option: parameter for select is TIMEOUT
}
CONFIG = Config('./', default_config)
CONFIG.from_json('server.json')
TAG_GET = 0
TAG_PUT = 1
class SQueue(object):
""" queue server to listen request """
def __init__(self):
super(SQueue, self).__init__()
#create a socket
self.server = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
self.server.setblocking(0)
#set option reused
self.server.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR , 1)
self.server.bind((CONFIG['HOST'], CONFIG['PORT']))
self.server.listen(10)
"MONGO_PORT": "32773",
"RECV_BUFFER": 1024,
"SERVER_BUFFER": 4096,
"MAX_LINK_COUNT": 256,
"PAGE_CACHE_SIZE": 5,
"TMP_DIR": "./tmp/",
"BLOOM_FILE": "bloom.pkl",
"CRAWL_MAX_DEPTH": 999,
"REQUEST_TIME": 5,
"CRAWL_SCALE": ["m.byr.cn"],
"CRAWL_SEEDS": ["http://m.byr.cn/section"],
"THREADING_NUM": 3,
"BLOOM_CAPACITY": 1000000
}
CONFIG = Config('./', default_config)
CONFIG.from_json('client.json')
helper = CommonHelper()
mongo_helper = MongoHelper(CONFIG['MONGO_HOST'], CONFIG['MONGO_PORT'])
class UrlBloom:
'''BloomFilter: check elements repetition'''
def __init__(self, _capacity=1000000, _error_rate=0.00001):
self.is_full = False
# determine if open backup bloom data by time
if CONFIG.get('BACKUP', 0) == 1:
self.bomb = TimeBomb(CONFIG['TMP_DIR'] + CONFIG['BLOOM_FILE'])
self.filter = self.bomb.load()
if self.filter is None:
self.filter = BloomFilter(capacity=_capacity, error_rate=_error_rate)
