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BaSyx / Documentation / Components

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Revision as of 04:55, 18 July 2022 by Frank.schnicke.iese.fraunhofer.de (Talk | contribs) (Adds OPC UA to Datasource)

Components

Off-the-Shelf-Components

BaSyx provides several easy to use off-the-shelf components. They can be used programmatically, as an executable jar or as a docker container.

You can either pull them from Docker Hub or follow the instructions to build them yourself.

Configuring components with environment variables

Please see the following page for configuring BaSyx components using environment variables.

Updater Component

Disclaimer: in feature/updater branch: The BaSyx Updater Component can be used to integrate asynchronous communication within the BaSyx Middleware. It utilizes Apache Camel to enable multiple datasources, transformers and the selection of the correct AAS as a datasink.

The Off-the-Shelf implementation for the Updater Component:

To learn more on how to use and adapt the updater component, visit the Documentation on GitHub.

Security Component

The BaSyx off-the-shelf components AASServer and AAS-Registry can be used with HTTPS. Please see Security Configuration for concrete steps to configure the both components with HTTPS communication.

CORS Configuration

Disclaimer: Contained in development branch: Cross-Origin Resource Sharing (CORS) can be configured to the BaSyx off-the-shelf components. Please see BaSyx_/_Documentation_/_Components_/_Context for the steps to configure the CORS to the components.

To know more about CORS please visit Wikipedia Page about CORS

Developing own Components

There are multiple ways of implementing BaSys 4.0 conforming components.

Extending Existing Interfaces

For each component, there exist interfaces that can be implemented to realize e.g. new backends. These interfaces integrate seamless in the REST-API-Provider. Additionally, the already defined test suites for the different component types can easily be reused.

In consequence, this is the easiest and fastest way of introducing new components.

Conforming to the REST-API

If the interfaces provided by BaSyx can't be used (e.g. because the component is implemented in a programming language currently not supported by BaSyx), it has to be ensured that the component is conforming to the defined REST-API and behavior.

For this, BaSyx provides a Technology Compatibility Kit (TCK). The TCKs for the components can be found in the repository in components/tck. For each component, there exists a TCK. Each TCK allows to generate a jar file that tests component functionality of arbitrary http endpoints. Each jar can be called in the following way:

java -jar $JAR $HTTP_ENDPOINT

where $JAR is the name of the component's TCK jar and $HTTP_ENDPOINT is the endpoint on which the component's REST API is available.

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