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# (C) Copyright 2021 ECMWF.
#
# This software is licensed under the terms of the Apache Licence Version 2.0
# which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
# In applying this licence, ECMWF does not waive the privileges and immunities
# granted to it by virtue of its status as an intergovernmental organisation
# nor does it submit to any jurisdiction.
#
import logging
from .base import DownloaderBase
LOG = logging.getLogger(__name__)
class MultiDownloader(DownloaderBase):
def __init__(self, downloaders, **kwargs):
super().__init__("<multiple>", **kwargs)
self.downloaders = downloaders
def __repr__(self):
return f"MultiDownloader({self.downloaders})"
def estimate_size(self, download):
total = 0
trust_size = True
for downloader in self.downloaders:
size, _, _, trust = downloader.estimate_size(download)
if size is not None:
total += size
trust_size = trust_size and trust
return total, "wb", 0, trust_size
def finalise(self):
for downloader in self.downloaders:
downloader.finalise()
def transfer(self, f, pbar):
for downloader in self.downloaders:
downloader.transfer(f, pbar)
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