pywis-pubsub provides subscription and download capability of WMO data from WIS2 infrastructure services.
The easiest way to install pywis-pubsub is via the Python pip utility:
pip3 install pywis-pubsub- Python 3
- virtualenv
Dependencies are listed in requirements.txt. Dependencies are automatically installed during pywis-pubsub installation.
Note that you will need Cython and Shapely Windows wheels for windows for your architecture prior to installing pywis-pubsub.
# setup virtualenv
python3 -m venv --system-site-packages pywis-pubsub
cd pywis-pubsub
source bin/activate
# clone codebase and install
git clone https://github.com/wmo-im/pywis-pubsub.git
cd pywis-pubsub
python3 setup.py installFirst check pywis-pubsub was correctly installed
pywis-pubsub --versionCreate configuration
cp pywis-pubsub-config.yml local.yml
vim local.yml # update accordingly to configure subscribe options# sync WIS2 notification schema
pywis-pubsub schema sync
# connect, and simply echo messages
pywis-pubsub subscribe --config local.yml
# subscribe, and download data from message
pywis-pubsub subscribe --config local.yml --download
# subscribe, and filter messages by geometry
pywis-pubsub subscribe --config local.yml --bbox=-142,42,-52,84
# subscribe, and filter messages by geometry, increase debugging verbosity
pywis-pubsub subscribe --config local.yml --bbox=-142,42,-52,84 --verbosity=DEBUG# validate a message
pywis-pubsub message validate /path/to/message1.json
# verify data from a message
pywis-pubsub message verify /path/to/message1.json
# validate WNM against abstract test suite (file on disk)
pywis-pubsub ets validate /path/to/file.json
# validate WNM against abstract test suite (URL)
pywis-pubsub ets validate https://example.org/path/to/file.json
# validate WNM against abstract test suite (URL), but turn JSON Schema validation off
pywis-pubsub ets validate https://example.org/path/to/file.json --no-fail-on-schema-validation
# key performance indicators
# set environment variable for GDC URL
export PYWIS_PUBSUB_GDC_URL=https://api.weather.gc.ca/collections/wis2-discovery-metadata
# all key performance indicators at once
pywis-pubsub kpi validate https://example.org/path/to/file.json --verbosity DEBUG
# all key performance indicators at once, but turn ETS validation off
pywis-pubsub kpi validate https://example.org/path/to/file.json --no-fail-on-ets --verbosity DEBUG
# all key performance indicators at once, in summary
pywis-pubsub kpi validate https://example.org/path/to/file.json --verbosity DEBUG --summary
# selected key performance indicator
pywis-pubsub kpi validate --kpi metadata_id /path/to/file.json -v INFOcp pub-config-example.yml pub-local.yml
vim pub-local.yml # update accordingly to configure publishing options
# example publishing a WIS2 notification message with attributes:
# unique-id=stationXYZ-20221111085500
# data-url=http://www.meteo.xx/stationXYZ-20221111085500.bufr4
# lon,lat,elevation=33.8,11.8,112
# wigos_station_identifier=0-20000-12345
pywis-pubsub publish --topic origin/a/wis2/centre-id/data/core/weather --config pub-local.yml -i stationXYZ-20221111085500 -u https://example.org/stationXYZ-20221111085500.bufr4 -g 33.8,-11.8,8.112 -w 0-20000-12345
# publish a message with a WCMP2 metadata id
pywis-pubsub publish --topic origin/a/wis2/centre-id/data/core/weather --config pub-local.yml -i stationXYZ-20221111085500 -u https://example.org/stationXYZ-20221111085500.bufr4 -g 33.8,-11.8,8.112 -w 0-20000-12345 --metadata-id "x-urn:wmo:md:test-foo:htebmal2001"
# publish a message with a datetime (instant)
pywis-pubsub publish --topic origin/a/wis2/centre-id/data/core/weather --config pub-local.yml -i stationXYZ-20221111085500 -u https://example.org/stationXYZ-20221111085500.bufr4 -g 33.8,-11.8,8.112 -w 0-20000-12345 --metadata-id "x-urn:wmo:md:test-foo:htebmal2001" --datetime 2024-01-08T22:56:23Z
# publish a message with a start and end datetime (extent)
pywis-pubsub publish --topic origin/a/wis2/centre-id/data/core/weather --config pub-local.yml -i stationXYZ-20221111085500 -u https://example.org/stationXYZ-20221111085500.bufr4 -g 33.8,-11.8,8.112 -w 0-20000-12345 --metadata-id "x-urn:wmo:md:test-foo:htebmal2001" --datetime 2024-01-08T20:56:23Z/2024-01-08T22:56:43Z
# publish a message as a data update
pywis-pubsub publish --topic origin/a/wis2/centre-id/data/core/weather --config pub-local.yml -i stationXYZ-20221111085500 -u https://example.org/stationXYZ-20221111085500.bufr4 -g 33.8,-11.8,8.112 -w 0-20000-12345 --metadata-id "x-urn:wmo:md:test-foo:htebmal2001" --operation update
# publish a message as a data deletion
pywis-pubsub publish --topic origin/a/wis2/centre-id/data/core/weather --config pub-local.yml -i stationXYZ-20221111085500 -u https://example.org/stationXYZ-20221111085500.bufr4 -g 33.8,-11.8,8.112 -w 0-20000-12345 --metadata-id "x-urn:wmo:md:test-foo:htebmal2001" --operation delete
# publish a message from file on disk
pywis-pubsub publish --topic origin/a/wis2/centre-id/data/core/weather --config pub-local.yml --file my_message.jsonPython examples:
Subscribing to a WIS2 Global Broker
from pywis_pubsub.mqtt import MQTTPubSubClient
options = {
'storage': {
'type': 'fs',
'basedir': '/tmp'
},
'bbox': [-90, -180, 90, 180]
}
topics = [
'topic1',
'topic2'
]
m = MQTTPubSubClient('mqtt://localhost:1883', options)
m.sub(topics)Publishing a WIS2 Notification Message
from datetime import datetime, timezone
from pywis_pubsub.mqtt import MQTTPubSubClient
from pywis_pubsub.publish import create_message
message = create_message(
topic='foo/bar',
content_type='application/x-bufr',
url='http://www.meteo.xx/stationXYZ-20221111085500.bufr4',
identifier='stationXYZ-20221111085500',
datetime=datetime.now(timezone.utc),
geometry=[33.8, -11.8, 123],
metadata_id='x-urn:wmo:md:test-foo:htebmal2001',
wigos_station_identifier='0-20000-12345',
operation='update'
)
m = MQTTPubSubClient('mqtt://localhost:1883')
m.pub(topic, json.dumps(message))Running KPIs
>>> # test KPI
>>> import json
>>> from pywis_pubsub.kpi import WNMKeyPerformanceIndicators
>>> with open('/path/to/file.json') as fh:
... data = json.load(fh)
>>> kpis = WNMKeyPerformanceIndicators(data)
>>> results = kpis.evaluate()
>>> results['summary']# install dev requirements
pip3 install -r requirements-dev.txt
# run tests like this:
python3 tests/run_tests.py
# or this:
python3 setup.py test# create release (x.y.z is the release version)
vi pywis_pubsub/__init__.py # update __version__
vi debian/changelog # add changelog entry
git commit -am 'update release version x.y.z'
git push origin main
git tag -a x.y.z -m 'tagging release version x.y.z'
git push --tags
# upload to PyPI
rm -fr build dist *.egg-info
python3 setup.py sdist bdist_wheel --universal
twine upload dist/*
# publish release on GitHub (https://github.com/wmo-im/pywis-pubsub/releases/new)
# bump version back to dev
vi pywis_pubsub/__init__.py # update __version__
git commit -am 'back to dev'
git push origin mainAll bugs, enhancements and issues are managed on GitHub.
