Add option for MatrixClient.initRustCrypto() to disable tracing.

spec/unit/rust-crypto/rust-crypto.spec.ts

@@ -329,6 +329,46 @@
             }
         }, 10000);
 
+        it("turns on tracing when tracingEnabled is true", async () => {
+            const mockStore = { free: jest.fn() } as unknown as StoreHandle;
+            jest.spyOn(StoreHandle, "open").mockResolvedValue(mockStore);
+            const tracingSpy = jest.spyOn(RustSdkCryptoJs.Tracing.prototype, 'turnOn').mockImplementation(() => {});
+
+            await initRustCrypto({
+                logger,
+                http: {} as MatrixClient["http"],
+                userId: TEST_USER,
+                deviceId: TEST_DEVICE_ID,
+                secretStorage: {} as ServerSideSecretStorage,
+                cryptoCallbacks: {} as CryptoCallbacks,
+                storePrefix: "storePrefix",
+                tracingEnabled: true,  // Assuming you've added this parameter
+            });
+
+            expect(tracingSpy).toHaveBeenCalled();
+            tracingSpy.mockRestore();  // Clean up the spy
+        });
+
+        it("turns off tracing when tracingEnabled is false", async () => {
+            const mockStore = { free: jest.fn() } as unknown as StoreHandle;
+            jest.spyOn(StoreHandle, "open").mockResolvedValue(mockStore);
+            const tracingSpy = jest.spyOn(RustSdkCryptoJs.Tracing.prototype, 'turnOff').mockImplementation(() => {});
+
+            await initRustCrypto({
+                logger,
+                http: {} as MatrixClient["http"],
+                userId: TEST_USER,
+                deviceId: TEST_DEVICE_ID,
+                secretStorage: {} as ServerSideSecretStorage,
+                cryptoCallbacks: {} as CryptoCallbacks,
+                storePrefix: "storePrefix",
+                tracingEnabled: false,  // Assuming you've added this parameter
+            });
+
+            expect(tracingSpy).toHaveBeenCalled();
+            tracingSpy.mockRestore();  // Clean up the spy
+        });
+
         it("migrates data from a legacy crypto store when secret are not encrypted", async () => {
             const PICKLE_KEY = "pickle1234";
             const legacyStore = new MemoryCryptoStore();

src/rust-crypto/index.ts

@@ -84,22 +84,29 @@ export async function initRustCrypto(args: {
 
     /** The pickle key for `legacyCryptoStore` */
     legacyPickleKey?: string;
-
     /**
      * A callback which will receive progress updates on migration from `legacyCryptoStore`.
      *
      * Called with (-1, -1) to mark the end of migration.
      */
     legacyMigrationProgressListener?: (progress: number, total: number) => void;
+    /**
+     * Whether to enable tracing. Defaults to true.
+     */
+    tracingEnabled?: boolean;
 }): Promise<RustCrypto> {
-    const { logger } = args;
+    const { logger, tracingEnabled = true } = args;
 
     // initialise the rust matrix-sdk-crypto-wasm, if it hasn't already been done
     logger.debug("Initialising Rust crypto-sdk WASM artifact");
     await RustSdkCryptoJs.initAsync();
 
-    // enable tracing in the rust-sdk
-    new RustSdkCryptoJs.Tracing(RustSdkCryptoJs.LoggerLevel.Debug).turnOn();
+    // Enable tracing in the rust-sdk based on the parameter
+    if (tracingEnabled) {
+        new RustSdkCryptoJs.Tracing(RustSdkCryptoJs.LoggerLevel.Debug).turnOn();
+    } else {
+        // Do not initialize tracing when disabled
+    }
 
     logger.debug("Opening Rust CryptoStore");
     let storeHandle;