feat(typedrouter): Add request/response hooks and monitoring to TypedRouter; emit hooks from TypedRequest; improve VirtualStream encoding/decoding; re-export hook types

ts/00_commitinfo_data.ts

@@ -3,6 +3,6 @@
  */
 export const commitinfo = {
   name: '@api.global/typedrequest',
-  version: '3.1.11',
+  version: '3.2.0',
   description: 'A TypeScript library for making typed requests towards APIs, including facilities for handling requests, routing, and virtual stream handling.'
 }

ts/classes.typedrequest.ts

@@ -1,11 +1,25 @@
 import * as plugins from './plugins.js';
 import { VirtualStream } from './classes.virtualstream.js';
 import { TypedResponseError } from './classes.typedresponseerror.js';
-import { TypedRouter } from './classes.typedrouter.js';
+import { TypedRouter, type ITypedRequestLogEntry } from './classes.typedrouter.js';
 import { TypedTarget } from './classes.typedtarget.js';
 
 const webrequestInstance = new plugins.webrequest.WebRequest();
 
+/**
+ * Helper to call global hooks from TypedRequest
+ */
+function callGlobalHook(
+  hookName: keyof typeof TypedRouter.globalHooks,
+  entry: ITypedRequestLogEntry
+): void {
+  try {
+    TypedRouter.globalHooks[hookName]?.(entry);
+  } catch (err) {
+    console.error(`TypedRequest hook error (${hookName}):`, err);
+  }
+}
+
 export class TypedRequest<T extends plugins.typedRequestInterfaces.ITypedRequest> {
   /**
    * in case we post against a url endpoint
@@ -36,6 +50,8 @@ export class TypedRequest<T extends plugins.typedRequestInterfaces.ITypedRequest
    * fires the request
    */
   public async fire(fireArg: T['request'], useCacheArg: boolean = false): Promise<T['response']> {
+    const requestStartTime = Date.now();
+
     let payloadSending: plugins.typedRequestInterfaces.ITypedRequest = {
       method: this.method,
       request: fireArg,
@@ -53,6 +69,16 @@ export class TypedRequest<T extends plugins.typedRequestInterfaces.ITypedRequest
       }
     });
 
+    // Hook: outgoing request
+    callGlobalHook('onOutgoingRequest', {
+      correlationId: payloadSending.correlation.id,
+      method: this.method,
+      direction: 'outgoing',
+      phase: 'request',
+      timestamp: requestStartTime,
+      payload: fireArg,
+    });
+
     let payloadReceiving: plugins.typedRequestInterfaces.ITypedRequest;
     payloadReceiving = await this.postTrObject(payloadSending, useCacheArg);
 
@@ -62,6 +88,19 @@ export class TypedRequest<T extends plugins.typedRequestInterfaces.ITypedRequest
         return this.postTrObject(payloadArg) as Promise<plugins.typedRequestInterfaces.IStreamRequest>;
       }
     });
+
+    // Hook: incoming response (for this outgoing request)
+    callGlobalHook('onIncomingResponse', {
+      correlationId: payloadSending.correlation.id,
+      method: this.method,
+      direction: 'incoming',
+      phase: 'response',
+      timestamp: Date.now(),
+      durationMs: Date.now() - requestStartTime,
+      payload: payloadReceiving?.response,
+      error: payloadReceiving?.error?.text,
+    });
+
     return payloadReceiving.response;
   }
 

ts/classes.typedrouter.ts

@@ -4,12 +4,80 @@ import { VirtualStream } from './classes.virtualstream.js';
 import { TypedHandler } from './classes.typedhandler.js';
 import { TypedRequest } from './classes.typedrequest.js';
 
+/**
+ * Log entry for TypedRequest traffic monitoring
+ */
+export interface ITypedRequestLogEntry {
+  correlationId: string;
+  method: string;
+  direction: 'outgoing' | 'incoming';
+  phase: 'request' | 'response';
+  timestamp: number;
+  durationMs?: number;
+  payload: any;
+  error?: string;
+}
+
+/**
+ * Hooks for intercepting TypedRequest traffic
+ */
+export interface ITypedRouterHooks {
+  onOutgoingRequest?: (entry: ITypedRequestLogEntry) => void;
+  onIncomingResponse?: (entry: ITypedRequestLogEntry) => void;
+  onIncomingRequest?: (entry: ITypedRequestLogEntry) => void;
+  onOutgoingResponse?: (entry: ITypedRequestLogEntry) => void;
+}
+
 /**
  * A typed router decides on which typed handler to call based on the method
  * specified in the typed request
  * This is thought for reusing the same url endpoint for different methods
  */
 export class TypedRouter {
+  // Static hooks for global traffic monitoring
+  public static globalHooks: ITypedRouterHooks = {};
+
+  /**
+   * Set global hooks for monitoring all TypedRequest traffic
+   */
+  public static setGlobalHooks(hooks: ITypedRouterHooks): void {
+    TypedRouter.globalHooks = { ...TypedRouter.globalHooks, ...hooks };
+  }
+
+  /**
+   * Clear all global hooks
+   */
+  public static clearGlobalHooks(): void {
+    TypedRouter.globalHooks = {};
+  }
+
+  // Instance-level hooks (for per-router monitoring)
+  public hooks: ITypedRouterHooks = {};
+
+  /**
+   * Set instance-level hooks for monitoring traffic through this router
+   */
+  public setHooks(hooks: ITypedRouterHooks): void {
+    this.hooks = { ...this.hooks, ...hooks };
+  }
+
+  /**
+   * Helper to call both global and instance hooks
+   */
+  private callHook(
+    hookName: keyof ITypedRouterHooks,
+    entry: ITypedRequestLogEntry
+  ): void {
+    try {
+      // Call global hooks
+      TypedRouter.globalHooks[hookName]?.(entry);
+      // Call instance hooks
+      this.hooks[hookName]?.(entry);
+    } catch (err) {
+      console.error(`TypedRouter hook error (${hookName}):`, err);
+    }
+  }
+
   public routerMap = new plugins.lik.ObjectMap<TypedRouter>();
   public handlerMap = new plugins.lik.ObjectMap<
     TypedHandler<any & plugins.typedRequestInterfaces.ITypedRequest>
@@ -109,6 +177,18 @@ export class TypedRouter {
 
     // lets do normal routing
     if (typedRequestArg?.correlation?.phase === 'request' || localRequestArg) {
+      const requestStartTime = Date.now();
+
+      // Hook: incoming request
+      this.callHook('onIncomingRequest', {
+        correlationId: typedRequestArg.correlation?.id || 'unknown',
+        method: typedRequestArg.method,
+        direction: 'incoming',
+        phase: 'request',
+        timestamp: requestStartTime,
+        payload: typedRequestArg.request,
+      });
+
       const typedHandler = this.getTypedHandlerForMethod(typedRequestArg.method);
 
       if (!typedHandler) {
@@ -124,6 +204,19 @@ export class TypedRouter {
         typedRequestArg = VirtualStream.encodePayloadForNetwork(typedRequestArg, {
           typedrouter: this,
         });
+
+        // Hook: outgoing response (error - no handler)
+        this.callHook('onOutgoingResponse', {
+          correlationId: typedRequestArg.correlation?.id || 'unknown',
+          method: typedRequestArg.method,
+          direction: 'outgoing',
+          phase: 'response',
+          timestamp: Date.now(),
+          durationMs: Date.now() - requestStartTime,
+          payload: typedRequestArg.response,
+          error: typedRequestArg.error?.text,
+        });
+
         return typedRequestArg;
       }
 
@@ -133,8 +226,32 @@ export class TypedRouter {
       typedRequestArg = VirtualStream.encodePayloadForNetwork(typedRequestArg, {
         typedrouter: this,
       });
+
+      // Hook: outgoing response (success)
+      this.callHook('onOutgoingResponse', {
+        correlationId: typedRequestArg.correlation?.id || 'unknown',
+        method: typedRequestArg.method,
+        direction: 'outgoing',
+        phase: 'response',
+        timestamp: Date.now(),
+        durationMs: Date.now() - requestStartTime,
+        payload: typedRequestArg.response,
+        error: typedRequestArg.error?.text,
+      });
+
       return typedRequestArg;
     } else if (typedRequestArg?.correlation?.phase === 'response') {
+      // Hook: incoming response
+      this.callHook('onIncomingResponse', {
+        correlationId: typedRequestArg.correlation?.id || 'unknown',
+        method: typedRequestArg.method,
+        direction: 'incoming',
+        phase: 'response',
+        timestamp: Date.now(),
+        payload: typedRequestArg.response,
+        error: typedRequestArg.error?.text,
+      });
+
       this.fireEventInterestMap
         .findInterest(typedRequestArg.correlation.id)
         ?.fullfillInterest(typedRequestArg);

ts/index.ts

@@ -3,4 +3,7 @@ export * from './classes.typedhandler.js';
 export * from './classes.typedrouter.js';
 export * from './classes.typedresponseerror.js';
 export * from './classes.typedtarget.js';
-export * from './classes.virtualstream.js';
+export * from './classes.virtualstream.js';
+
+// Re-export hook interfaces from typedrouter
+export type { ITypedRequestLogEntry, ITypedRouterHooks } from './classes.typedrouter.js';