ballerinax/asyncapi.native.handler Ballerina library

Native support for the dispatch step of the AsyncAPI trigger connectors.

A generated trigger's HTTP resource function cannot call a user's remote function directly, and it also cannot discover what type that function expects. Both need Java interop, so this module wraps them for the generated dispatcher to call.

Functions

• invokeRemoteFunction: calls a named remote function on the service attached to the listener, passing it an already-bound event.
• bindEventPayload: binds a raw JSON payload to the record type declared on the first parameter of a named remote function of the attached service. The type is discovered from the service object at runtime, so the generator no longer needs to emit an event-to-type table. Binding is delegated to ballerina/data.jsondata's parseAsType with data projection enabled, so @jsondata:Name field renames are honoured and an explicit JSON null for an optional field is tolerated. Returns an error if the function is not found on the service, if it declares no parameter, or if the payload does not fit the declared type.

Requirements

Triggers generated with a version of asyncapi-tools that includes dynamic payload binding depend on version 0.6.0 or later of this module.