Created
December 13, 2022 22:54
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EDL "wget" implementation
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def wget(url): | |
import urllib.request | |
import netrc | |
import os | |
import fsspec | |
import base64 | |
from urllib.parse import urlparse | |
# Get login credentials | |
URS_URL="https://urs.earthdata.nasa.gov" | |
info = netrc.netrc() | |
username, account, password = info.authenticators(urlparse(URS_URL).hostname) | |
credentials = '{0}:{1}'.format(username, password) | |
credentials = base64.b64encode(credentials.encode('ascii')).decode('ascii') | |
target_dir = "." | |
target_file = os.path.join(target_dir, os.path.basename(url)) | |
print(f"Downloading {url} to {target_file}") | |
opener = urllib.request.build_opener(urllib.request.HTTPCookieProcessor()) | |
request = urllib.request.Request(url) | |
request.add_header("Authorization", f"Bearer {credentials}") | |
with opener.open(request) as response, fsspec.open(target_file, "wb") as f: | |
f.write(response.read()) | |
# This works | |
wget("https://data.nsidc.earthdatacloud.nasa.gov/nsidc-cumulus-prod-protected/ATLAS/ATL08/005/2018/10/14/ATL08_20181014001049_02350102_005_01.h5") | |
# This fails | |
wget("https://n5eil01u.ecs.nsidc.org/DP7/ATLAS/ATL06.005/2018.10.14/ATL06_20181014051246_02380105_005_01.h5") | |
# This works | |
wget("https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-protected/ECCO_L4_BOLUS_LLC0090GRID_MONTHLY_V4R4/OCEAN_BOLUS_VELOCITY_mon_mean_1992-03_ECCO_V4r4_native_llc0090.nc") |
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