# coding: utf-
from __future__ import unicode_literals, print_function
+
+import multiprocessing
+import signal
+
from future.builtins import str as text
+import sys
import os
import requests
-import threadpool
+import time
+
try:
from urllib.parse import urlparse
except ImportError:
from nhentai.parser import request
from nhentai.utils import Singleton
-
requests.packages.urllib3.disable_warnings()
+semaphore = multiprocessing.Semaphore(1)
-class NhentaiImageNotExistException(Exception):
+class NHentaiImageNotExistException(Exception):
pass
class Downloader(Singleton):
- def __init__(self, path='', thread=1, timeout=30):
- if not isinstance(thread, (int, )) or thread < 1 or thread > 15:
- raise ValueError('Invalid threads count')
+ def __init__(self, path='', size=5, timeout=30, delay=0):
+ self.size = size
self.path = str(path)
- self.thread_count = thread
- self.threads = []
self.timeout = timeout
+ self.delay = delay
- def _download(self, url, folder='', filename='', retried=0):
- logger.info('Start downloading: {0} ...'.format(url))
+ def download_(self, url, folder='', filename='', retried=0):
+ if self.delay:
+ time.sleep(self.delay)
+ logger.info('Starting to download {0} ...'.format(url))
filename = filename if filename else os.path.basename(urlparse(url).path)
base_filename, extension = os.path.splitext(filename)
try:
+ if os.path.exists(os.path.join(folder, base_filename.zfill(3) + extension)):
+ logger.warning('File: {0} exists, ignoring'.format(os.path.join(folder, base_filename.zfill(3) +
+ extension)))
+ return 1, url
+
+ response = None
with open(os.path.join(folder, base_filename.zfill(3) + extension), "wb") as f:
- response = request('get', url, stream=True, timeout=self.timeout)
- if response.status_code != 200:
- raise NhentaiImageNotExistException
+ i = 0
+ while i < 10:
+ try:
+ response = request('get', url, stream=True, timeout=self.timeout)
+ if response.status_code != 200:
+ raise NHentaiImageNotExistException
+
+ except NHentaiImageNotExistException as e:
+ raise e
+
+ except Exception as e:
+ i += 1
+ if not i < 10:
+ logger.critical(str(e))
+ return 0, None
+ continue
+
+ break
+
length = response.headers.get('content-length')
if length is None:
f.write(response.content)
except (requests.HTTPError, requests.Timeout) as e:
if retried < 3:
logger.warning('Warning: {0}, retrying({1}) ...'.format(str(e), retried))
- return 0, self._download(url=url, folder=folder, filename=filename, retried=retried+1)
+ return 0, self.download_(url=url, folder=folder, filename=filename, retried=retried+1)
else:
return 0, None
- except NhentaiImageNotExistException as e:
+ except NHentaiImageNotExistException as e:
os.remove(os.path.join(folder, base_filename.zfill(3) + extension))
return -1, url
except Exception as e:
+ import traceback
+ traceback.print_stack()
logger.critical(str(e))
return 0, None
+ except KeyboardInterrupt:
+ return -3, None
+
return 1, url
- def _download_callback(self, request, result):
+ def _download_callback(self, result):
result, data = result
if result == 0:
- logger.critical('fatal errors occurred, quit.')
- exit(1)
+ logger.warning('fatal errors occurred, ignored')
+ # exit(1)
elif result == -1:
logger.warning('url {} return status code 404'.format(data))
+ elif result == -2:
+ logger.warning('Ctrl-C pressed, exiting sub processes ...')
+ elif result == -3:
+ # workers wont be run, just pass
+ pass
else:
- logger.log(15, '{0} download successfully'.format(data))
+ logger.log(15, '{0} downloaded successfully'.format(data))
def download(self, queue, folder=''):
- if not isinstance(folder, (text)):
+ if not isinstance(folder, text):
folder = str(folder)
if self.path:
folder = os.path.join(self.path, folder)
if not os.path.exists(folder):
- logger.warn('Path \'{0}\' not exist.'.format(folder))
+ logger.warn('Path \'{0}\' does not exist, creating.'.format(folder))
try:
os.makedirs(folder)
except EnvironmentError as e:
logger.critical('{0}'.format(str(e)))
- exit(1)
+
else:
logger.warn('Path \'{0}\' already exist.'.format(folder))
- queue = [([url], {'folder': folder}) for url in queue]
+ queue = [(self, url, folder) for url in queue]
+
+ pool = multiprocessing.Pool(self.size, init_worker)
+ [pool.apply_async(download_wrapper, args=item) for item in queue]
+
+ pool.close()
+ pool.join()
+
+
+def download_wrapper(obj, url, folder=''):
+ if sys.platform == 'darwin' or semaphore.get_value():
+ return Downloader.download_(obj, url=url, folder=folder)
+ else:
+ return -3, None
+
+
+def init_worker():
+ signal.signal(signal.SIGINT, subprocess_signal)
+
- self.thread_pool = threadpool.ThreadPool(self.thread_count)
- requests_ = threadpool.makeRequests(self._download, queue, self._download_callback)
- [self.thread_pool.putRequest(req) for req in requests_]
+def subprocess_signal(signal, frame):
+ if semaphore.acquire(timeout=1):
+ logger.warning('Ctrl-C pressed, exiting sub processes ...')
- self.thread_pool.wait()
+ raise KeyboardInterrupt
projects / nhentai.git / blobdiff