wasmcloud核心Actor接口

所有Actor都必须响应核心 HealthCheckRequest 消息，返回一个 Err 或一个 HealthCheckResponse。以下是一个仅响应健康检查消息的Actor的示例

extern crate wasmcloud_actor_core as actor;
use wapc_guest::HandlerResult;
use actor::{HealthCheckRequest, HealthCheckResponse, Handlers};

 #[actor::init]
 fn init() {
     Handlers::register_health_request(health);
 }

 fn health(_msg: HealthCheckRequest) -> HandlerResult<HealthCheckResponse> {
     Ok(HealthCheckResponse::healthy())
 }

actor::init 宏定义了一个健康检查消息响应者，默认总是返回 healthy()。如果你不需要为健康检查提供自定义逻辑，那么你的 init 函数可以简化如下

extern crate wasmcloud_actor_core as actor;
use wapc_guest::HandlerResult;

#[actor::init]
fn init() {
    // register your message handlers here
}