add Global Replay Service - Githubissues

wmo-im / wis2-guide

WIS2 Guide

https://wmo-im.github.io/wis2-guide

Apache License 2.0

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add Global Replay Service #143

Open tomkralidis opened 4 weeks ago

tomkralidis commented 4 weeks ago

A Global Replay Service provides API access to past notification messages as per the GC retention period.

As discussed during the Global Services Testing May 2024 meeting in Tokyo, add as optional service in the WIS2 Global Service ecosystem.

cc @6a6d74 @golfvert

tomkralidis commented 4 weeks ago

PR in #144

tomkralidis commented 3 weeks ago

Global Replay functionality from an API. Consider other options on accessing past messages.

tomkralidis commented 2 weeks ago

Following discussion with @golfvert

in addition to OGC API - Features workflow, add capability to add "replay" endpoint based on filters. In this way, the API can also be used to trigger the Global Replay broker to (re)publish messages:
- example:
- request: /subscribe?datetime=2024-06-10T09:01:01Z/..&topic=origin/a/wis2/fr-meteofrance&pub=96ceea9a-57dc-4864-bb75-8279cf2096d6 (likely better off as HTTP POST)
- response: a JSON payload of status/result and topic
- the Global Replay would query the underlying datastore to retrieve matching messages, and publish them to its own broker
- the user setting the "pub" topic would be able to subscribe apriori to enable immediate notifications once GB publishes