This capability provider is an implementation of the wasmcloud:messaging contract. It exposes publish, request, and subscribe functionality to components.
To configure this provider, use the following configuration values as target_config in the link:
| Property | Description |
|---|---|
subscriptions |
A comma-separated list of subscription topics. For example, the setting subscription=wasmcloud.example,test.topic subscribes to the topic wasmcloud.example and test.topic |
uri |
NATS connection URI. If not specified, the default is 0.0.0.0:4222 |
This provider is fully implemented as provider-messaging-nats in the wasmCloud repository. You can find the full implementations for the functions marked as TODO: in that crate, as well as extensions that add NATS authentication, TLS CA support, etc.