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fix: switch from_gfz to https as ftp server is retired #169

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Merged
tsutterley merged 1 commit into from
Oct 13, 2025
Merged

fix: switch from_gfz to https as ftp server is retired #169

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27 changes: 17 additions & 10 deletions gravity_toolkit/utilities.py
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Original file line number Diff line number Diff line change
@@ -1,14 +1,15 @@
#!/usr/bin/env python
u"""
utilities.py
Written by Tyler Sutterley (11/2024)
Written by Tyler Sutterley (10/2025)
Download and management utilities for syncing time and auxiliary files

PYTHON DEPENDENCIES:
lxml: processing XML and HTML in Python
https://pypi.python.org/pypi/lxml

UPDATE HISTORY:
Updated 10/2025: switch from_gfz to https as ftp server is being retired
Updated 11/2024: simplify unique file name function
add function to scrape GSFC website for GRACE mascon urls
Updated 10/2024: update CMR search utility to replace deprecated scrolling
Expand Down Expand Up @@ -2383,10 +2384,11 @@ def from_csr(
mode=mode)

# PURPOSE: download GravIS and satellite laser ranging files from GFZ
# ftp://isdcftp.gfz-potsdam.de/grace/Level-2/GFZ/RL06_SLR_C20/
# ftp://isdcftp.gfz-potsdam.de/grace/GravIS/GFZ/Level-2B/aux_data/
# https://isdc-data.gfz.de/grace/Level-2/GFZ/RL06_SLR_C20/
# https://isdc-data.gfz.de/grace/GravIS/GFZ/Level-2B/aux_data/
def from_gfz(
directory: str | pathlib.Path,
version: str = '0004',
timeout: int | None = None,
chunk: int | None = 8192,
verbose: bool = False,
Expand All @@ -2401,6 +2403,8 @@ def from_gfz(
----------
directory: str
download directory
version: str, default '0004'
version of the GravIS Level-2B data products to download
timeout: int or NoneType, default None
timeout in seconds for blocking operations
chunk: int, default 8192
Expand All @@ -2418,14 +2422,16 @@ def from_gfz(
local_dir.mkdir(mode=mode, parents=True, exist_ok=True)
# SLR oblateness and combined low-degree harmonic files
FILES = []
FILES.append(['isdcftp.gfz-potsdam.de','grace','Level-2','GFZ',
FILES.append(['https://isdc-data.gfz.de','grace','Level-2','GFZ',
'RL06_SLR_C20','GFZ_RL06_C20_SLR.dat'])
FILES.append(['isdcftp.gfz-potsdam.de','grace','GravIS','GFZ',
'Level-2B','aux_data','GRAVIS-2B_GFZOP_GRACE+SLR_LOW_DEGREES_0003.dat'])
# GRAVIS-2B_GFZOP_GRACE+SLR_LOW_DEGREES_0004.dat
GRAVIS = f'GRAVIS-2B_GFZOP_GRACE+SLR_LOW_DEGREES_{version}.dat'
FILES.append(['https://isdc-data.gfz.de','grace','GravIS','GFZ',
'Level-2B','aux_data',GRAVIS])
# get each file
for FILE in FILES:
local_file = directory.joinpath(FILE[-1])
from_ftp(FILE,
from_http(FILE,
timeout=timeout,
local=local_file,
hash=get_hash(local_file),
Expand All @@ -2434,10 +2440,11 @@ def from_gfz(
fid=fid,
mode=mode)
# GravIS geocenter file
FILE = ['isdcftp.gfz-potsdam.de','grace','GravIS','GFZ','Level-2B',
'aux_data','GRAVIS-2B_GFZOP_GEOCENTER_0003.dat']
GRAVIS = f'GRAVIS-2B_GFZOP_GEOCENTER_{version}.dat'
FILE = ['https://isdc-data.gfz.de','grace','GravIS','GFZ','Level-2B',
'aux_data',GRAVIS]
local_file = local_dir.joinpath(FILE[-1])
from_ftp(FILE,
from_http(FILE,
timeout=timeout,
local=local_file,
hash=get_hash(local_file),
Expand Down