Schema Registry Clients

Overview

After the configuring and deploying a Schema Registry, clients can be then be used with Registry to validate NATS message payloads.

Clients are broken up into two separate components; those that interact with the Schema Registry directly and those that validate client payloads against specific schemas.

SDK

The SDK is used to:

Create
Read
Update
Delete

It is possible to interact with schemas using the following methods:

Control Plane API,
Control Plane UI, and
Each languages SDK.

If using the SDK's, refer to each libraries documentation for the specifics. Links to each supported language are found here.

Validation

Validation clients ensure that a payload conforms to a schema from the registry and will cache any invalid payloads before they become a problem. Clients can validate before sending and when receiving using their specific libraries. This diagram shows validation on both the Publisher and Consumer sides to give a complete snapshot of how payload validation works.

Although each language's implementation will be slightly different based on language constraints the concept is the same.

Client libraries will do the following:

Authenticate with NATS using a JWT.
Validate a payload against a schema
Store schemas locally to prevent unnecessary round-trips to the Schema Registry

Libraries

More languages will be added as they become available.