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#! /usr/bin/env python
# -*- coding: utf-8 -*-
# COPYRIGHT NOTICE STARTS HERE
# Copyright 2019 © Samsung Electronics Co., Ltd.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# COPYRIGHT NOTICE ENDS HERE
import argparse
import datetime
import logging
import os
import sys
import timeit
import requests
from retrying import retry
import http_file
from concurrent_downloader import ConcurrentDownloader
log = logging.getLogger(__name__)
class HttpDownloader(ConcurrentDownloader):
def __init__(self, *list_args, list_type='http_files', workers=None):
super().__init__(list_type, *list_args, workers=workers)
@property
def check_table(self):
"""
Table with information what items from lists are downloaded
"""
self.missing()
header = ['Name', 'Downloaded']
return self._check_table(header, {'Name': 'l'},
((item, item not in self._missing) for item
in self._data_list))
@staticmethod
def _make_get_request(url):
"""
Run http get request
:param url: url to reqeuest
:return: requests.Response
"""
req = requests.get(url)
req.raise_for_status()
return req
def _is_missing(self, item):
"""
Check if item is missing (not downloaded)
:param item: item to check
:return: boolean
"""
return not os.path.isfile(
'{}/{}'.format(self._data_list[item], item.rsplit('//')[-1]))
@retry(stop_max_attempt_number=5, wait_fixed=2000)
def _get_file(self, file_uri):
"""
Get http file from uri
:param file_uri: uri of the file
:return: file content
"""
if not file_uri.startswith('http'):
file_uri = 'http://' + file_uri
file_req = self._make_get_request(file_uri)
return file_req.content
def _download_item(self, item):
"""
Download http file
:param item: http file to be downloaded (tuple: (uri, dst_dir))
"""
log.info('Downloading: {}'.format(item[0]))
dst_path = '{}/{}'.format(item[1], item[0].rsplit('//')[-1])
try:
f = http_file.HttpFile(item[0], self._get_file(item[0]), dst_path)
f.save_to_file()
except Exception as err:
log.exception('Error downloading: {}: {}'.format(item[0], err))
if os.path.isfile(dst_path):
os.remove(dst_path)
raise err
log.info('Downloaded: {}'.format(f.name))
def run_cli():
"""
Run as cli tool
"""
parser = argparse.ArgumentParser(description='Download http files from list')
parser.add_argument('file_list', metavar='file-list',
help='File with list of http files to download')
parser.add_argument('--output-dir', '-o', default=os.getcwd(),
help='Destination directory for saving')
parser.add_argument('--check', '-c', action='store_true', default=False,
help='Check mode')
parser.add_argument('--debug', action='store_true', default=False,
help='Turn on debug output')
parser.add_argument('--workers', type=int, default=None,
help='Set maximum workers for parallel download (default: cores * 5)')
args = parser.parse_args()
if args.debug:
logging.basicConfig(stream=sys.stdout, level=logging.DEBUG)
else:
logging.basicConfig(stream=sys.stdout, level=logging.INFO, format='%(message)s')
downloader = HttpDownloader([args.file_list, args.output_dir], workers=args.workers)
if args.check:
log.info('Check mode. No download will be executed.')
log.info(downloader.check_table)
sys.exit(0)
timer_start = timeit.default_timer()
try:
downloader.download()
except RuntimeError:
sys.exit(1)
finally:
log.info('Downloading finished in {}'.format(
datetime.timedelta(seconds=timeit.default_timer() - timer_start)))
if __name__ == '__main__':
run_cli()
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