Crate wasmcloud_actor_extras

wasmCloud Extras Actor Interface

This crate provides wasmCloud actors with an interface to the extras capability provider. Every wasmCloud host runtime automatically comes with a built-in extras provider. However, actors using this provider will still need to be signed with the wasmcloud:extras capability contract ID.

The following functions are supported on the extras Host interface:

• request_guid
• request_sequence
• request_random

Example:

extern crate wapc_guest as guest;
use guest::prelude::*;
use wasmcloud_actor_core as core;
use wasmcloud_actor_extras as extras;
use wasmcloud_actor_http_server as http;
use serde_json::json;
use log::{error, info};

#[no_mangle]
pub fn wapc_init() {
    http::Handlers::register_handle_request(generate_guid);
    core::Handlers::register_health_request(health);
}

/// Generate a Guid and return it in a JSON envelope
fn generate_guid(_req: http::Request) -> HandlerResult<http::Response> {
  let guid = get_guid()?      // Replace this with `extras::default().request_guid()?`
                .unwrap_or("unknown-guid".to_string());

  let result = json!({"guid": guid });
  Ok(http::Response::json(&result, 200, "OK"))

}

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

Constants

OP_REQUEST_GUID	Constant that can be used by capability providers when handling messages from actors
OP_REQUEST_RANDOM	Constant that can be used by capability providers when handling messages from actors
OP_REQUEST_SEQUENCE	Constant that can be used by capability providers when handling messages from actors