Annex C

Introduction

ECSS-E-TM-10-25A Annex C specifies the implementation technology that is required to exchange data that complies with the data model specified in ECSS-E-TM-10-25A Annex A. Annex C prescribes 2 technologies that need to be supported by an implementation for it to be fully compliant with ECSS-E-TM-10-25A:

• JSON REST API
• JSON Exchange File Format

The CDP4 is fully compliant with the standard. The CDP4-SDK can be used to create applications client and server side that implement the JSON REST API. It also provides an implementation of to read from and write a file that conforms to the JSON Exchange File Format. The CDP4 Desktop application can communicate with a JSON REST API, of which the CDP4 Web Services are an implementation. The CDP4 Web Services can export data to a JSON Exchange File Format and can be seeded from a JSON Exchange File Format.

JSON REST API

The JSON REST API is a particular flavor of REST. Two HTTP verbs are supported: GET and POST, DELETE, PUT and PATCH are not supported. GET requests are used to retrieve data. POST requests are used to create, update and delete data; multiple operations are supported in one POST request, allowing an API user to add, update and delete different objects with one request.

JSON Exchange File Format

More information coming soon