Macro payload_convert

macro_rules! payload_convert {
    ($service_payload_type:ident, $payload_type:ty) => { ... };
}

The payload_convert macro helps convert between the domain-specific payloads (variants of Payload) and the Payload container(to/from) & MessageHub MessageEvent (from). The first matcher is the Payload variant name where the payload type can be found. Note that this is the direct variant name and not fully qualified. The second matcher is the domain-specific payload type.

The macro implements the following in a mod called convert:

• Into from domain Payload to service MessageHub Payload
• TryFrom from service MessageHub Payload to domain Payload
• TryFromWithClient from service MessageHub MessageEvent to domain Payload and client.
• TryFromWithClient from a service MessageHub MessageEvent option to domain Payload and client.