2022-01-24 ET-W2AT Meeting

1. Opening

Jeremy

Topology was discussed at last weekly meeting.

MQP protocols include …

2. Presentation by Remy

Remy

Remy presented WIS2.0 MQP Architecture and Data Exchange Topology Disussion

• Core services: Global broker, Cache, Monitoring

  • a small number of “Global Brokers” (3 or 4)

  • a small number of cache

  • a small number of monitoring centers

• Topology: NC/DCPC

• MQP:

• Auto discovery of the services

3. Discussion

All

Thorsten

• MQP: NC to run the MQP ?

  • (Remy) Transition: 5/6 years. All NCs run a broker gradually.

  • (Peter)

    • (Remy) WIS2 architecture is not only about GTS data, but to deal with all data and services

  • (Henning) Any selection criteria for 3/4 global brokers?

    • (Remy) no strict limit for the number, cache, gateway, metadata.

    • (Thorsten) a list of services to be defined is helpful for WIS2 architecture.

  • (Jeremy) shared service model agreed?

    • (Enrico) a structured way of approaching the model

    • (Remy) two operational core services at least.

  • Kai

    • less optimistic for all NCs to be running as a broker and store data. Some service cannot be run as a shared service, such as gateway.

  • Peter

    • cache and the broker work together, do not split

  • Timo

    • messages advertertize the data

    • data storage

  • Kai

    • WIS 1.0 metadata: quality and completeness problems

  • Enrico: it is members to decide the engagement of private company

  • Hassan

    • to start by asking the volunteers to run the global brokers

  • Remy

    • the need to split cache and broker: cache is only for weather data; and broker in WIS2.0 is for all data

    • commericial providers: cache service for LDCs

  • Jeremy

    • AOR

      • Enrico: problem of AoR is that when they have requests, the GISC cannot meet the need. Function of AoR should be dynamic, be outside of Manual.

      • Jeremy: mechanism is needed for the implementation of AoR

      • Timo: to use monitoring for activie services.

      • Remy: Although AoR concept is outdated, we now only focus on important pillars

      • Kai: some GISCs provide service to AoR. During transition period, organization is needed.

      • Enrico: We secretariat now have the regional officers to help during transition.

  • Question: metadata catalogues; how is all the information shared? (to be discussed next time)

  • Question: Center running a cache

  • Timo: to make sure discovery metadata work is the core service of WIS2.0

  • Hassan: learn the architecture of YouTube providing search, download, notification…

4 Wrap up

Remy

The team agree that shared service works in WIS2.0 architecture

To work into 2 ways:

1) TT-GISC feedback on running the shared service

2) Transition period: GTS centers to receive data from WIS2.0

Next step:

1. workflow

2. a list of shared service