Integrate DWD GRIB Downloader as "gribmagic dwd acquire" subcommand

[amotl]

Hi.

Introduction

This is the another subsystem, beyond gribmagic unity. Its command line entrypoint is gribmagic dwd and its aim is to acquire a specific subset of DWD NWP model run data by describing it using a "download recipe".

About

Under the hood, gribmagic dwd acquire uses the well-known DWD Data Downloader, along with some improvements, see dwd-grib-downloader.

Recipes

You can inspect two example recipes at:

• recipe_d2_wind.py
• recipe_global_assorted.py

Synopsis

# Install DWD GRIB Downloader program.
gribmagic install dwd-grib-downloader

# Acquire wind-specific parameters from ICON-D2.
wget https://raw.githubusercontent.com/earthobservations/gribmagic/98da3fd4f/examples/dwd/recipe_d2_wind.py
gribmagic dwd acquire --recipe=recipe_d2_wind.py --timestamp="2021101800" --output=.gribmagic-data

# Acquire assorted parameters from ICON-GLOBAL.
wget https://raw.githubusercontent.com/earthobservations/gribmagic/98da3fd4f/examples/dwd/recipe_global_assorted.py
gribmagic dwd acquire --recipe=recipe_global_assorted.py --timestamp="2021101800" --output=.gribmagic-data

With kind regards, Andreas.

/cc @meteoDaniel, @mhaberler

[codecov[bot]]

Codecov Report

Merging #14 (3f7aae8) into main (dac4044) will decrease coverage by 1.20%. The diff coverage is 94.11%.

@@            Coverage Diff             @@
##             main      #14      +/-   ##
==========================================
- Coverage   94.33%   93.12%   -1.21%     
==========================================
  Files          18       19       +1     
  Lines         494      611     +117     
  Branches        0       61      +61     
==========================================
+ Hits          466      569     +103     
- Misses         28       32       +4     
- Partials        0       10      +10     

Flag	Coverage Δ
unittests	93.12% <94.11%> (-1.21%)	:arrow_down:

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
gribmagic/unity/configuration/constants.py	100.00% <ø> (ø)
gribmagic/unity/exceptions.py	100.00% <ø> (ø)
gribmagic/installer.py	63.15% <63.15%> (ø)
gribmagic/unity/index/remote.py	88.88% <88.88%> (ø)
gribmagic/dwd/pipeline.py	81.81% <90.00%> (ø)
gribmagic/commands.py	97.56% <90.90%> (-2.44%)	:arrow_down:
gribmagic/__init__.py	100.00% <100.00%> (ø)
gribmagic/unity/configuration/__init__.py	100.00% <100.00%> (ø)
gribmagic/unity/configuration/model.py	100.00% <100.00%> (ø)
gribmagic/unity/configuration/parser.py	93.10% <100.00%> (ø)
... and 16 more

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