Added option to enable AWS CRT debug logging

example/main.ts

@@ -20,6 +20,7 @@ const rootLogger = pino({
 /** Main entry point of the example application. */
 async function main() {
   let session: MysaSession | undefined;
+
   try {
     rootLogger.info('Loading session...');
     const sessionJson = await readFile('session.json', 'utf8');
@@ -27,7 +28,11 @@ async function main() {
   } catch {
     rootLogger.info('No valid session file found.');
   }
-  const client = new MysaApiClient(session, { logger: rootLogger.child({ module: 'mysa-js-sdk' }) });
+
+  const client = new MysaApiClient(session, {
+    logger: rootLogger.child({ module: 'mysa-js-sdk' }),
+    isAwsCrtDebugLoggingEnabled: process.env.AWS_CRT_DEBUG_LOGGING === '1'
+  });
 
   client.emitter.on('sessionChanged', async (newSession) => {
     if (newSession) {

src/api/MysaApiClient.ts

@@ -18,7 +18,7 @@ import {
   CognitoUserPool,
   CognitoUserSession
 } from 'amazon-cognito-identity-js';
-import { iot, mqtt } from 'aws-iot-device-sdk-v2';
+import { io, iot, mqtt } from 'aws-iot-device-sdk-v2';
 import { hash } from 'crypto';
 import dayjs, { Dayjs } from 'dayjs';
 import duration from 'dayjs/plugin/duration.js';
@@ -152,6 +152,10 @@ export class MysaApiClient {
     this._logger = options?.logger || new VoidLogger();
     this._fetcher = options?.fetcher || fetch;
 
+    if (options?.isAwsCrtDebugLoggingEnabled) {
+      io.enable_logging(io.LogLevel.DEBUG);
+    }
+
     if (session) {
       this._cognitoUser = new CognitoUser({
         Username: session.username,

src/api/MysaApiClientOptions.ts

@@ -15,4 +15,11 @@ export interface MysaApiClientOptions {
    * @defaultValue The global `fetch` function.
    */
   fetcher?: typeof fetch;
+
+  /**
+   * Whether to enable debug logging for AWS CRT.
+   *
+   * @defaultValue `false`
+   */
+  isAwsCrtDebugLoggingEnabled?: boolean;
 }