fiware/tutorials.context-providers

:blue_book: FIWARE 104: Registering Context Providers

These tutorials teach FIWARE users about context data and context providers. The tutorial builds on existing entities created in the previous tutorials and enables a user to retrieve data about a store which is not held directly within the Context Broker.

The tutorial uses cUrl commands throughout, but is also available as Postman documentation.

Start-Up

NGSI-v2 Smart Supermarket

NGSI-v2 offers JSON based interoperability used in individual Smart Systems. To run this tutorial with NGSI-v2, use the NGSI-v2 branch.

git clone https://github.com/FIWARE/tutorials.Context-Providers.git
cd tutorials.Context-Providers
git checkout NGSI-v2

./services create
./services start

	📚 Documentation	Postman Collection

NGSI-LD Smart Farm

NGSI-LD offers JSON-LD based interoperability used for Federations and Data Spaces. To run this tutorial with NGSI-LD, use the NGSI-LD branch.

git clone https://github.com/FIWARE/tutorials.Context-Providers.git
cd tutorials.Context-Providers
git checkout NGSI-LD

./services create
./services start

	📚 Documentation	Postman Collection

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License

MIT © 2018-2024 FIWARE Foundation e.V.

tutorials.context-providers's Issues

Weather not working with Orion 2.3.0

I'm following the tutorial, but I'm unable to obtain weather live data (OpenWeatherMap api) related to a store. The live weather health check works fine.

I've registered the context-provider with the URL http://context-provider:3000/weather/weatherConditions, but when I obtain the store information (http://{{orion}}/v2/entities/urn:ngsi-ld:Store:001), the weather information is not showing, only the data in database appears. When retrieving live data from http://{{context-provider}}/weather/weatherConditions/op/query with the payload from the tutorial, I get a bad request with the message "bad query", and the URL to the OpenWeatherMap show q=undefined. The logs also show "tutorial:proxy Making a OpenWeatherMap API request: undefined".

If I change the Orion to version 2.2.0 and register the context provider with legacyForwarding equal to true, all works fine.

How can I make the tutorial work with Orion 2.3.0?

Thanks

Update Postman Collection

I'm using the Postman Collections from the Step-by-step and, in this case, the postman collection in this repo is more recent. The most obvious problem is that the published Postman collection still uses NGSI v1 queries.

The non-updated postman collection referred in the docs: https://app.getpostman.com/run-collection/7c9bed4bd2ce5213a80b