main.py

import threading
from Queue import Queue
from spider import Spider
from getdomain import *
from general import *
PROJECT_NAME = 'theausome'
HOMEPAGE = raw_input('Enter the website address')
DOMAIN_NAME = get_domain_name(HOMEPAGE)
QUEUE_FILE = PROJECT_NAME + '/queue.txt'
CRAWLED_FILE = PROJECT_NAME + '/crawled.txt'
NUMBER_OF_THREADS = 3
queue = Queue()
Spider(PROJECT_NAME, HOMEPAGE, DOMAIN_NAME)


# Create worker threads (will die when the main exits)
def create_workers():
    for _ in range(NUMBER_OF_THREADS):
        t = threading.Thread(target=work)
        t.daemon = True                    # Make sure that workers die when the main exits
        t.start()


# Do the next job in the queue
def work():
    while True:
        url = queue.get()
        Spider.crawl_page(threading.current_thread().name, url)
        queue.task_done()


# Each queued_links is a new job
def create_jobs():
    for link in file_to_set(QUEUE_FILE):
        queue.put(link)
    queue.join()
    crawl()


# Checks if the queue file is empty. If not, find the links in it.
def crawl():
    queued_links = file_to_set(QUEUE_FILE)
    if len(queued_links) > 0:
        print str(len(queued_links)), ' links are in the queue.'
        create_jobs()


create_workers()
crawl()