wip: making progress converting handlers

* Related #512
* Related #495

[ci skip]

Author: tegefaulkes

src/agent-old/service/echo.ts

@@ -0,0 +1,19 @@
+import {ClientRPCRequestParams, ClientRPCResponseResult} from "@/client/types";
+import { EchoMessage } from "./types";
+import { UnaryCaller } from '../../rpc/callers';
+
+
+const echo = new UnaryCaller<
+    ClientRPCRequestParams<EchoMessage>,
+    ClientRPCResponseResult<EchoMessage>
+  >();
+
+// No type used here, it will override type inference
+const clientManifest = {
+  echo,
+}
+
+export {
+  clientManifest,
+  echo,
+}

src/agent-old/service/nodesChainDataGet.ts

@@ -0,0 +1,19 @@
+import { UnaryHandler } from "../../rpc/handlers";
+import type { EchoMessage } from './types';
+import {AgentRPCRequestParams, AgentRPCResponseResult} from "../types";
+
+class EchoHandler extends UnaryHandler<
+  {},
+  AgentRPCRequestParams<EchoMessage>,
+  AgentRPCResponseResult<EchoMessage>
+  > {
+  public async handle(
+    input: AgentRPCRequestParams<EchoMessage>,
+  ): Promise<AgentRPCResponseResult<EchoMessage>> {
+    return {
+      message: input.message,
+    }
+  }
+}
+
+export { EchoHandler };