mirror of
https://github.com/spalencsar/bearhub.git
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100 lines
3.4 KiB
Python
100 lines
3.4 KiB
Python
import logging
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import os
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import time
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import traceback
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from bauh.api.abstract.download import FileDownloader
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from bauh.api.abstract.handler import ProcessWatcher
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from bauh.commons.system import run_cmd, new_subprocess, ProcessHandler, SystemProcess
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class AdaptableFileDownloader(FileDownloader):
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def __init__(self, logger: logging.Logger, multithread_enabled: bool):
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self.logger = logger
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self.multithread_enabled = multithread_enabled
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def is_aria2c_available(self) -> bool:
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return bool(run_cmd('which aria2c'))
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def _get_aria2c_process(self, url: str, output_path: str, cwd: str) -> SystemProcess:
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cmd = ['aria2c', url,
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'--no-conf',
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'--max-connection-per-server=16',
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'--split=16',
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'--enable-color=false',
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'--stderr=true',
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'--summary-interval=0',
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'--disable-ipv6',
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'--min-split-size=1M',
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'--allow-overwrite=true',
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'--continue=true',
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'--timeout=5',
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'--max-file-not-found=3',
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'--remote-time=true']
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if output_path:
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output_split = output_path.split('/')
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cmd.append('--dir=' + '/'.join(output_split[:-1]))
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cmd.append('--out=' + output_split[-1])
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return SystemProcess(new_subprocess(cmd=cmd, cwd=cwd),
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skip_stdout=True,
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check_error_output=False,
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success_phrase='download completed',
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output_delay=0.001)
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def _get_wget_process(self, url: str, output_path: str, cwd: str) -> SystemProcess:
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cmd = ['wget', url]
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if output_path:
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cmd.append('-O')
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cmd.append(output_path)
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return SystemProcess(new_subprocess(cmd, cwd=cwd))
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def _rm_bad_file(self, file_name: str, output_path: str, cwd):
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to_delete = output_path if output_path else '{}/{}'.format(cwd, file_name)
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if to_delete and os.path.exists(to_delete):
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self.logger.info('Removing downloaded file {}'.format(to_delete))
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os.remove(to_delete)
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def download(self, file_url: str, watcher: ProcessWatcher, output_path: str, cwd: str) -> bool:
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self.logger.info('Downloading {}'.format(file_url))
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handler = ProcessHandler(watcher)
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file_name = file_url.split('/')[-1]
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final_cwd = cwd if cwd else '.'
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success = False
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ti = time.time()
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try:
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if self.is_multithreaded():
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ti = time.time()
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process = self._get_aria2c_process(file_url, output_path, final_cwd)
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else:
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ti = time.time()
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process = self._get_wget_process(file_url, output_path, final_cwd)
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success = handler.handle(process)
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except:
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traceback.print_exc()
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self._rm_bad_file(file_name, output_path, final_cwd)
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tf = time.time()
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self.logger.info(file_name + ' download took {0:.2f} minutes'.format((tf - ti) / 60))
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if not success:
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self.logger.error("Could not download '{}'".format(file_name))
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self._rm_bad_file(file_name, output_path, final_cwd)
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return success
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def is_multithreaded(self) -> bool:
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return self.multithread_enabled and self.is_aria2c_available()
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def get_default_client_name(self) -> str:
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return 'aria2c' if self. is_multithreaded() else 'wget'
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