def download(self):
row = self.row
if not os.path.exists(row[SAVEDIR_COL]):
os.makedirs(row[SAVEDIR_COL], exist_ok=True)
filepath, tmp_filepath, conf_filepath = get_tmp_filepath(
row[SAVEDIR_COL], row[SAVENAME_COL])
if os.path.exists(filepath):
if self.download_mode == DownloadMode.IGNORE:
self.emit('downloaded', row[FSID_COL])
logger.debug('File exists, ignored!')
return
elif self.download_mode == DownloadMode.NEWCOPY:
name, ext = os.path.splitext(filepath)
filepath = '{0}_{1}{2}'.format(name, util.curr_time(), ext)
url = pcs.get_download_link(self.cookie, self.tokens, row[PATH_COL])
if not url:
row[STATE_COL] = State.ERROR
self.emit('network-error', row[FSID_COL])
logger.warn('Failed to get url to download')
return
if os.path.exists(conf_filepath) and os.path.exists(tmp_filepath):
with open(conf_filepath) as conf_fh:
status = json.load(conf_fh)
threads = len(status)
file_exists = True
fh = open(tmp_filepath, 'rb+')
fh.seek(0)
else:
req = net.urlopen_simple(url)
if not req:
logger.warn('Failed to get url to download')
self.emit('network-error', row[FSID_COL])
return
content_length = req.getheader('Content-Length')
# Fixed: baiduPCS using non iso-8859-1 codec in http headers
if not content_length:
match = re.search('\sContent-Length:\s*(\d+)', str(req.headers))
if not match:
logger.warn('Failed to get url to download')
self.emit('network-error', row[FSID_COL])
return
content_length = match.group(1)
size = int(content_length)
if size <= SMALL_FILE_SIZE:
threads = 1
else:
threads = self.default_threads
average_size, pad_size = divmod(size, threads)
file_exists = False
status = []
fh = open(tmp_filepath, 'wb')
try:
fh.truncate(size)
except (OSError, IOError):
e = truncate.format_exc()
logger.error(e)
self.emit('disk-error', row[FSID_COL], tmp_filepath)
return
# task list
tasks = []
# message queue
queue = Queue()
# threads lock
lock = threading.RLock()
for id_ in range(threads):
if file_exists:
start_size, end_size, received = status[id_]
if start_size + received >= end_size:
# part of file has been downloaded
continue
start_size += received
else:
start_size = id_ * average_size
end_size = start_size + average_size - 1
if id_ == threads - 1:
end_size = end_size + pad_size + 1
status.append([start_size, end_size, 0])
task = DownloadBatch(id_, queue, url, lock, start_size, end_size,
fh, self.timeout)
tasks.append(task)
for task in tasks:
task.start()
try:
conf_count = 0
done = 0
self.emit('started', row[FSID_COL])
while row[STATE_COL] == State.DOWNLOADING:
id_, received = queue.get()
# FINISHED
if received == BATCH_FINISISHED:
done += 1
if done == len(tasks):
row[STATE_COL] = State.FINISHED
break
else:
continue
# error occurs
elif received == BATCH_ERROR:
row[STATE_COL] = State.ERROR
break
status[id_][2] += received
conf_count += 1
# flush data and status to disk
if conf_count > THRESHOLD_TO_FLUSH:
with lock:
if not fh.closed:
fh.flush()
with open(conf_filepath, 'w') as fh:
json.dump(status, fh)
conf_count = 0
received_total = sum(t[2] for t in status)
self.emit('received', row[FSID_COL], received, received_total)
except Exception:
logger.error(traceback.format_exc())
row[STATE_COL] = State.ERROR
with lock:
if not fh.closed:
fh.close()
for task in tasks:
if task.isAlive():
task.stop()
with open(conf_filepath, 'w') as fh:
json.dump(status, fh)
if row[STATE_COL] == State.CANCELED:
os.remove(tmp_filepath)
if os.path.exists(conf_filepath):
os.remove(conf_filepath)
elif row[STATE_COL] == State.ERROR:
self.emit('network-error', row[FSID_COL])
elif row[STATE_COL] == State.FINISHED:
self.emit('downloaded', row[FSID_COL])
os.rename(tmp_filepath, filepath)
if os.path.exists(conf_filepath):
os.remove(conf_filepath)
def download(self):
row = self.row
if not os.path.exists(row[SAVEDIR_COL]):
os.makedirs(row[SAVEDIR_COL], exist_ok=True)
filepath, tmp_filepath, conf_filepath = get_tmp_filepath(
row[SAVEDIR_COL], row[SAVENAME_COL])
if os.path.exists(filepath):
if self.download_mode == DownloadMode.IGNORE:
self.emit('downloaded', row[FSID_COL])
return
elif self.download_mode == DownloadMode.NEWCOPY:
name, ext = os.path.splitext(filepath)
filepath = '{0}_{1}{2}'.format(name, util.curr_time(), ext)
url = pcs.get_download_link(self.cookie, self.tokens, row[PATH_COL])
if not url:
print('Error: Failed to get download link')
row[STATE_COL] = State.ERROR
self.emit('network-error', row[FSID_COL])
return
if os.path.exists(conf_filepath) and os.path.exists(tmp_filepath):
with open(conf_filepath) as conf_fh:
status = json.load(conf_fh)
threads = len(status)
file_exists = True
fh = open(tmp_filepath, 'ab')
else:
req = request.urlopen(url)
if not req:
self.emit('network-error', row[FSID_COL])
return
content_length = req.getheader('Content-Length')
# Fixed: baiduPCS using non iso-8859-1 codec in http headers
if not content_length:
match = re.search('\sContent-Length:\s*(\d+)', str(req.headers))
if not match:
self.emit('network-error', row[FSID_COL])
return
content_length = match.group(1)
size = int(content_length)
threads = self.default_threads
average_size, pad_size = divmod(size, threads)
file_exists = False
status = []
fh = open(tmp_filepath, 'wb')
fh.truncate(size)
# task list
tasks = []
# message queue
queue = Queue()
# threads lock
lock = threading.RLock()
for id_ in range(threads):
if file_exists:
start_size, end_size, received = status[id_]
start_size += received
else:
start_size = id_ * average_size
end_size = start_size + average_size - 1
if id_ == threads - 1:
end_size = end_size + pad_size + 1
status.append([start_size, end_size, 0])
task = DownloadBatch(id_, queue, url, lock, start_size, end_size,
fh, self.timeout)
tasks.append(task)
for task in tasks:
task.start()
try:
conf_count = 0
done = 0
self.emit('started', row[FSID_COL])
while row[STATE_COL] == State.DOWNLOADING:
id_, received = queue.get()
# FINISHED
if received == BATCH_FINISISHED:
done += 1
if done == len(status):
row[STATE_COL] = State.FINISHED
break
else:
continue
elif received == BATCH_ERROR:
row[STATE_COL] = State.ERROR
break
status[id_][2] += received
conf_count += 1
if conf_count > THRESHOLD_TO_FLUSH:
with open(conf_filepath, 'w') as fh:
fh.write(json.dumps(status))
conf_count = 0
received_total = sum(t[2] for t in status)
self.emit('received', row[FSID_COL], received_total)
except Exception as e:
print(e)
for task in tasks:
task.stop()
row[STATE_COL] = State.ERROR
fh.close()
with open(conf_filepath, 'w') as fh:
fh.write(json.dumps(status))
for task in tasks:
if not task.isAlive():
task.stop()
if row[STATE_COL] == State.CANCELED:
os.remove(tmp_filepah)
if os.path.exists(conf_filepath):
os.remove(conf_filepath)
elif row[STATE_COL] == State.FINISHED:
self.emit('downloaded', row[FSID_COL])
os.rename(tmp_filepath, filepath)
if os.path.exists(conf_filepath):
os.remove(conf_filepath)
def download(self):
row = self.row
if not os.path.exists(row[SAVEDIR_COL]):
os.makedirs(row[SAVEDIR_COL], exist_ok=True)
filepath, tmp_filepath, conf_filepath = get_tmp_filepath(
row[SAVEDIR_COL], row[SAVENAME_COL])
if os.path.exists(filepath):
if self.download_mode == DownloadMode.IGNORE:
self.emit('downloaded', row[FSID_COL])
logger.debug('File exists, ignored!')
return
elif self.download_mode == DownloadMode.NEWCOPY:
name, ext = os.path.splitext(filepath)
filepath = '{0}_{1}{2}'.format(name, util.curr_time(), ext)
url = pcs.get_download_link(self.cookie, self.tokens, row[PATH_COL])
if not url:
row[STATE_COL] = State.ERROR
self.emit('network-error', row[FSID_COL])
logger.warn('Failed to get url to download')
return
if os.path.exists(conf_filepath) and os.path.exists(tmp_filepath):
with open(conf_filepath) as conf_fh:
status = json.load(conf_fh)
threads = len(status)
file_exists = True
fh = open(tmp_filepath, 'rb+')
fh.seek(0)
else:
req = net.urlopen_simple(url)
if not req:
logger.warn('Failed to get url to download')
self.emit('network-error', row[FSID_COL])
return
content_length = req.getheader('Content-Length')
# Fixed: baiduPCS using non iso-8859-1 codec in http headers
if not content_length:
match = re.search('\sContent-Length:\s*(\d+)',
str(req.headers))
if not match:
logger.warn('Failed to get url to download')
self.emit('network-error', row[FSID_COL])
return
content_length = match.group(1)
size = int(content_length)
if size == 0:
open(filepath, 'a').close()
self.emit('downloaded', row[FSID_COL])
return
elif size <= SMALL_FILE_SIZE:
threads = 1
else:
threads = self.default_threads
average_size, pad_size = divmod(size, threads)
file_exists = False
status = []
fh = open(tmp_filepath, 'wb')
try:
fh.truncate(size)
except (OSError, IOError):
e = truncate.format_exc()
logger.error(e)
self.emit('disk-error', row[FSID_COL], tmp_filepath)
return
# task list
tasks = []
# message queue
queue = Queue()
# threads lock
lock = threading.RLock()
for id_ in range(threads):
if file_exists:
start_size, end_size, received = status[id_]
if start_size + received >= end_size:
# part of file has been downloaded
continue
start_size += received
else:
start_size = id_ * average_size
end_size = start_size + average_size - 1
if id_ == threads - 1:
end_size = end_size + pad_size + 1
status.append([start_size, end_size, 0])
task = DownloadBatch(id_, queue, url, lock, start_size, end_size,
fh, self.timeout)
tasks.append(task)
for task in tasks:
task.start()
try:
conf_count = 0
done = 0
self.emit('started', row[FSID_COL])
while row[STATE_COL] == State.DOWNLOADING:
id_, received = queue.get()
# FINISHED
if received == BATCH_FINISISHED:
done += 1
if done == len(tasks):
row[STATE_COL] = State.FINISHED
break
else:
continue
# error occurs
elif received == BATCH_ERROR:
row[STATE_COL] = State.ERROR
break
status[id_][2] += received
conf_count += 1
# flush data and status to disk
if conf_count > THRESHOLD_TO_FLUSH:
with lock:
if not fh.closed:
fh.flush()
with open(conf_filepath, 'w') as fh:
json.dump(status, fh)
conf_count = 0
received_total = sum(t[2] for t in status)
self.emit('received', row[FSID_COL], received, received_total)
except Exception:
logger.error(traceback.format_exc())
row[STATE_COL] = State.ERROR
with lock:
if not fh.closed:
fh.close()
for task in tasks:
if task.isAlive():
task.stop()
with open(conf_filepath, 'w') as fh:
json.dump(status, fh)
if row[STATE_COL] == State.CANCELED:
if os.path.exists(tmp_filepath):
os.remove(tmp_filepath)
if os.path.exists(conf_filepath):
os.remove(conf_filepath)
elif row[STATE_COL] == State.ERROR:
self.emit('network-error', row[FSID_COL])
elif row[STATE_COL] == State.FINISHED:
self.emit('downloaded', row[FSID_COL])
os.rename(tmp_filepath, filepath)
if os.path.exists(conf_filepath):
os.remove(conf_filepath)
def download(self):
row = self.row
if not os.path.exists(row[SAVEDIR_COL]):
os.makedirs(row[SAVEDIR_COL], exist_ok=True)
filepath, tmp_filepath, conf_filepath = get_tmp_filepath(
row[SAVEDIR_COL], row[SAVENAME_COL])
if os.path.exists(filepath):
if self.download_mode == DownloadMode.IGNORE:
self.emit('downloaded', row[FSID_COL])
return
elif self.download_mode == DownloadMode.NEWCOPY:
name, ext = os.path.splitext(filepath)
filepath = '{0}_{1}{2}'.format(name, util.curr_time(), ext)
url = pcs.get_download_link(self.cookie, self.tokens, row[PATH_COL])
if not url:
print('Error: Failed to get download link')
row[STATE_COL] = State.ERROR
self.emit('network-error', row[FSID_COL])
return
if os.path.exists(conf_filepath) and os.path.exists(tmp_filepath):
with open(conf_filepath) as conf_fh:
status = json.load(conf_fh)
threads = len(status)
file_exists = True
fh = open(tmp_filepath, 'ab')
else:
req = request.urlopen(url)
if not req:
self.emit('network-error', row[FSID_COL])
return
content_length = req.getheader('Content-Length')
# Fixed: baiduPCS using non iso-8859-1 codec in http headers
if not content_length:
match = re.search('\sContent-Length:\s*(\d+)',
str(req.headers))
if not match:
self.emit('network-error', row[FSID_COL])
return
content_length = match.group(1)
size = int(content_length)
threads = self.default_threads
average_size, pad_size = divmod(size, threads)
file_exists = False
status = []
fh = open(tmp_filepath, 'wb')
fh.truncate(size)
# task list
tasks = []
# message queue
queue = Queue()
# threads lock
lock = threading.RLock()
for id_ in range(threads):
if file_exists:
start_size, end_size, received = status[id_]
start_size += received
else:
start_size = id_ * average_size
end_size = start_size + average_size - 1
if id_ == threads - 1:
end_size = end_size + pad_size + 1
status.append([start_size, end_size, 0])
task = DownloadBatch(id_, queue, url, lock, start_size, end_size,
fh, self.timeout)
tasks.append(task)
for task in tasks:
task.start()
try:
conf_count = 0
done = 0
self.emit('started', row[FSID_COL])
while row[STATE_COL] == State.DOWNLOADING:
id_, received = queue.get()
# FINISHED
if received == BATCH_FINISISHED:
done += 1
if done == len(status):
row[STATE_COL] = State.FINISHED
break
else:
continue
elif received == BATCH_ERROR:
row[STATE_COL] = State.ERROR
break
status[id_][2] += received
conf_count += 1
if conf_count > THRESHOLD_TO_FLUSH:
with open(conf_filepath, 'w') as fh:
fh.write(json.dumps(status))
conf_count = 0
received_total = sum(t[2] for t in status)
self.emit('received', row[FSID_COL], received_total)
except Exception as e:
print(e)
for task in tasks:
task.stop()
row[STATE_COL] = State.ERROR
fh.close()
with open(conf_filepath, 'w') as fh:
fh.write(json.dumps(status))
for task in tasks:
if not task.isAlive():
task.stop()
if row[STATE_COL] == State.CANCELED:
os.remove(tmp_filepah)
if os.path.exists(conf_filepath):
os.remove(conf_filepath)
elif row[STATE_COL] == State.FINISHED:
self.emit('downloaded', row[FSID_COL])
os.rename(tmp_filepath, filepath)
if os.path.exists(conf_filepath):
os.remove(conf_filepath)
