fix(bluetooth-classic): handle exceptions more elegantly

Locked adapters throw an exception when another interaction is
requested. Instead of letting the error bubble up we properly catch it
now.

src/integrations/bluetooth-classic/bluetooth-classic.service.spec.ts

@@ -205,6 +205,23 @@ describe('BluetoothClassicService', () => {
     expect(handleRssiMock).not.toHaveBeenCalled();
   });
 
+  it('should not publish an RSSI value if an error occured', async () => {
+    jest.spyOn(service, 'shouldInquire').mockReturnValue(true);
+    bluetoothService.inquireClassicRssi.mockRejectedValue(
+      new Error('expected for this test')
+    );
+    const handleRssiMock = jest
+      .spyOn(service, 'handleNewRssi')
+      .mockImplementation(() => undefined);
+
+    await expect(
+      service.handleRssiRequest('77:50:fb:4d:ab:70')
+    ).resolves.not.toThrow();
+
+    expect(clusterService.publish).not.toHaveBeenCalled();
+    expect(handleRssiMock).not.toHaveBeenCalled();
+  });
+
   it('should publish RSSI values that are bigger than the min RSSI', async () => {
     jest.spyOn(service, 'shouldInquire').mockReturnValue(true);
     bluetoothService.inquireClassicRssi.mockResolvedValue(-9);

src/integrations/bluetooth-classic/bluetooth-classic.service.ts

@@ -101,10 +101,17 @@ export class BluetoothClassicService
     }
 
     if (this.shouldInquire()) {
-      let rssi = await this.bluetoothService.inquireClassicRssi(
-        this.config.hciDeviceId,
-        address
-      );
+      let rssi;
+      try {
+        rssi = await this.bluetoothService.inquireClassicRssi(
+          this.config.hciDeviceId,
+          address
+        );
+      } catch (e) {
+        this.logger.error(
+          `Failed to retrieve RSSI for ${address}: ${e.message}`
+        );
+      }
 
       if (rssi !== undefined) {
         rssi = _.round(this.filterRssi(address, rssi), 1);