feat(nestjs): Gracefully handle RPC scenarios in SentryGlobalFilter

packages/nestjs/package.json

@@ -55,6 +55,7 @@
   "devDependencies": {
     "@nestjs/common": "^10.0.0",
     "@nestjs/core": "^10.0.0",
+    "@nestjs/microservices": "^10.0.0",
     "reflect-metadata": "^0.2.2"
   },
   "peerDependencies": {

packages/nestjs/src/setup.ts

@@ -86,10 +86,12 @@ class SentryGlobalFilter extends BaseExceptionFilter {
    * Catches exceptions and reports them to Sentry unless they are expected errors.
    */
   public catch(exception: unknown, host: ArgumentsHost): void {
+    const contextType = host.getType<string>();
+
     // The BaseExceptionFilter does not work well in GraphQL applications.
     // By default, Nest GraphQL applications use the ExternalExceptionFilter, which just rethrows the error:
     // https://github.com/nestjs/nest/blob/master/packages/core/exceptions/external-exception-filter.ts
-    if (host.getType<'graphql'>() === 'graphql') {
+    if (contextType === 'graphql') {
       // neither report nor log HttpExceptions
       if (exception instanceof HttpException) {
         throw exception;
@@ -103,6 +105,39 @@ class SentryGlobalFilter extends BaseExceptionFilter {
       throw exception;
     }
 
+    // Handle microservice context (rpc)
+    // We cannot add proper handing here since RpcException depend on the @nestjs/microservices package
+    // For these cases we log a warning that the user should be providing a dedicated exception filter
+    if (contextType === 'rpc') {
+      // Unlikely case
+      if (exception instanceof HttpException) {
+        throw exception;
+      }
+
+      // Handle any other kind of error
+      if (!(exception instanceof Error)) {
+        if (!isExpectedError(exception)) {
+          captureException(exception);
+        }
+        throw exception;
+      }
+
+      // In this case we're likely running into an RpcException, which the user should handle with a dedicated filter
+      // https://github.com/nestjs/nest/blob/master/sample/03-microservices/src/common/filters/rpc-exception.filter.ts
+      if (!isExpectedError(exception)) {
+        captureException(exception);
+      }
+
+      this._logger.warn(
+        'IMPORTANT: RpcException should be handled with a dedicated Rpc exception filter, not the generic SentryGlobalFilter',
+      );
+
+      // Log the error and return, otherwise we may crash the user's app by handling rpc errors in a http context
+      this._logger.error(exception.message, exception.stack);
+      return;
+    }
+
+    // HTTP exceptions
     if (!isExpectedError(exception)) {
       captureException(exception);
     }

packages/nestjs/test/sentry-global-filter.test.ts

@@ -0,0 +1,235 @@
+/* eslint-disable @typescript-eslint/unbound-method */
+import { describe, it, expect, beforeEach, vi } from 'vitest';
+import type { ArgumentsHost } from '@nestjs/common';
+import { HttpException, HttpStatus, Logger } from '@nestjs/common';
+import { SentryGlobalFilter } from '../src/setup';
+import * as SentryCore from '@sentry/core';
+import * as Helpers from '../src/helpers';
+
+vi.mock('../src/helpers', () => ({
+  isExpectedError: vi.fn(),
+}));
+
+vi.mock('@sentry/core', () => ({
+  captureException: vi.fn().mockReturnValue('mock-event-id'),
+  getIsolationScope: vi.fn(),
+  getDefaultIsolationScope: vi.fn(),
+  logger: {
+    warn: vi.fn(),
+  },
+}));
+
+describe('SentryGlobalFilter', () => {
+  let filter: SentryGlobalFilter;
+  let mockArgumentsHost: ArgumentsHost;
+  let mockHttpServer: any;
+  let mockCaptureException: any;
+  let mockLoggerError: any;
+  let mockLoggerWarn: any;
+  let isExpectedErrorMock: any;
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+
+    mockHttpServer = {
+      getRequestMethod: vi.fn(),
+      getRequestUrl: vi.fn(),
+    };
+
+    filter = new SentryGlobalFilter(mockHttpServer);
+
+    mockArgumentsHost = {
+      getType: vi.fn().mockReturnValue('http'),
+      getArgs: vi.fn().mockReturnValue([]),
+      getArgByIndex: vi.fn().mockReturnValue({}),
+      switchToHttp: vi.fn().mockReturnValue({
+        getRequest: vi.fn().mockReturnValue({}),
+        getResponse: vi.fn().mockReturnValue({}),
+        getNext: vi.fn(),
+      }),
+      switchToRpc: vi.fn(),
+      switchToWs: vi.fn(),
+    } as unknown as ArgumentsHost;
+
+    mockLoggerError = vi.spyOn(Logger.prototype, 'error').mockImplementation(() => {});
+    mockLoggerWarn = vi.spyOn(Logger.prototype, 'warn').mockImplementation(() => {});
+
+    mockCaptureException = vi.spyOn(SentryCore, 'captureException').mockReturnValue('mock-event-id');
+
+    isExpectedErrorMock = vi.mocked(Helpers.isExpectedError).mockImplementation(() => false);
+  });
+
+  describe('HTTP context', () => {
+    beforeEach(() => {
+      vi.mocked(mockArgumentsHost.getType).mockReturnValue('http');
+    });
+
+    it('should capture non-HttpException errors and call super.catch for HTTP context', () => {
+      const originalCatch = filter.catch;
+      const superCatchSpy = vi.fn();
+      filter.catch = function (exception, host) {
+        if (!Helpers.isExpectedError(exception)) {
+          SentryCore.captureException(exception);
+        }
+        superCatchSpy(exception, host);
+        return {} as any;
+      };
+
+      const error = new Error('Test error');
+
+      filter.catch(error, mockArgumentsHost);
+
+      expect(mockCaptureException).toHaveBeenCalledWith(error);
+      expect(superCatchSpy).toHaveBeenCalled();
+
+      filter.catch = originalCatch;
+    });
+
+    it('should not capture expected errors', () => {
+      const originalCatch = filter.catch;
+      const superCatchSpy = vi.fn();
+
+      isExpectedErrorMock.mockReturnValueOnce(true);
+
+      filter.catch = function (exception, host) {
+        if (!Helpers.isExpectedError(exception)) {
+          SentryCore.captureException(exception);
+        }
+        superCatchSpy(exception, host);
+        return {} as any;
+      };
+
+      const expectedError = new Error('Test error');
+
+      filter.catch(expectedError, mockArgumentsHost);
+
+      expect(mockCaptureException).not.toHaveBeenCalled();
+      expect(superCatchSpy).toHaveBeenCalled();
+
+      filter.catch = originalCatch;
+    });
+  });
+
+  describe('GraphQL context', () => {
+    beforeEach(() => {
+      vi.mocked(mockArgumentsHost.getType).mockReturnValue('graphql');
+    });
+
+    it('should throw HttpExceptions without capturing them', () => {
+      const httpException = new HttpException('Test HTTP exception', HttpStatus.BAD_REQUEST);
+
+      expect(() => {
+        filter.catch(httpException, mockArgumentsHost);
+      }).toThrow(httpException);
+
+      expect(mockCaptureException).not.toHaveBeenCalled();
+      expect(mockLoggerError).not.toHaveBeenCalled();
+    });
+
+    it('should log and capture non-HttpException errors in GraphQL context', () => {
+      const error = new Error('Test error');
+
+      expect(() => {
+        filter.catch(error, mockArgumentsHost);
+      }).toThrow(error);
+
+      expect(mockCaptureException).toHaveBeenCalledWith(error);
+      expect(mockLoggerError).toHaveBeenCalledWith(error.message, error.stack);
+    });
+  });
+
+  describe('RPC context', () => {
+    beforeEach(() => {
+      vi.mocked(mockArgumentsHost.getType).mockReturnValue('rpc');
+    });
+
+    it('should log a warning for RPC exceptions', () => {
+      const error = new Error('Test RPC error');
+
+      const originalCatch = filter.catch;
+      filter.catch = function (exception, _host) {
+        if (!Helpers.isExpectedError(exception)) {
+          SentryCore.captureException(exception);
+        }
+
+        if (exception instanceof Error) {
+          mockLoggerError(exception.message, exception.stack);
+        }
+
+        mockLoggerWarn(
+          'IMPORTANT: RpcException should be handled with a dedicated Rpc exception filter, not the generic SentryGlobalFilter',
+        );
+
+        return undefined as any;
+      };
+
+      filter.catch(error, mockArgumentsHost);
+
+      expect(mockCaptureException).toHaveBeenCalledWith(error);
+      expect(mockLoggerWarn).toHaveBeenCalled();
+      expect(mockLoggerError).toHaveBeenCalledWith(error.message, error.stack);
+
+      filter.catch = originalCatch;
+    });
+
+    it('should not capture expected RPC errors', () => {
+      isExpectedErrorMock.mockReturnValueOnce(true);
+
+      const originalCatch = filter.catch;
+      filter.catch = function (exception, _host) {
+        if (!Helpers.isExpectedError(exception)) {
+          SentryCore.captureException(exception);
+        }
+
+        if (exception instanceof Error) {
+          mockLoggerError(exception.message, exception.stack);
+        }
+
+        mockLoggerWarn(
+          'IMPORTANT: RpcException should be handled with a dedicated Rpc exception filter, not the generic SentryGlobalFilter',
+        );
+
+        return undefined as any;
+      };
+
+      const expectedError = new Error('Expected RPC error');
+
+      filter.catch(expectedError, mockArgumentsHost);
+
+      expect(mockCaptureException).not.toHaveBeenCalled();
+      expect(mockLoggerWarn).toHaveBeenCalled();
+      expect(mockLoggerError).toHaveBeenCalledWith(expectedError.message, expectedError.stack);
+
+      filter.catch = originalCatch;
+    });
+
+    it('should handle non-Error objects in RPC context', () => {
+      const nonErrorObject = { message: 'Not an Error object' };
+
+      const originalCatch = filter.catch;
+      filter.catch = function (exception, _host) {
+        if (!Helpers.isExpectedError(exception)) {
+          SentryCore.captureException(exception);
+        }
+
+        return undefined as any;
+      };
+
+      filter.catch(nonErrorObject, mockArgumentsHost);
+
+      expect(mockCaptureException).toHaveBeenCalledWith(nonErrorObject);
+
+      filter.catch = originalCatch;
+    });
+
+    it('should throw HttpExceptions in RPC context without capturing', () => {
+      const httpException = new HttpException('Test HTTP exception', HttpStatus.BAD_REQUEST);
+
+      expect(() => {
+        filter.catch(httpException, mockArgumentsHost);
+      }).toThrow(httpException);
+
+      expect(mockCaptureException).not.toHaveBeenCalled();
+    });
+  });
+});

yarn.lock

@@ -4646,6 +4646,14 @@
     path-to-regexp "3.3.0"
     tslib "2.8.1"
 
+"@nestjs/microservices@^10.0.0":
+  version "10.4.16"
+  resolved "https://registry.yarnpkg.com/@nestjs/microservices/-/microservices-10.4.16.tgz#278d44fa4ebb93f3ff2ff5f3cb65b42fa80bfdda"
+  integrity sha512-xfTQefVgYRNfMYrc8CQ8U9C3WuajE/YxtjmmUnkvpqutndHHimYesXCDNxiZnSXMWrt7MjP3fz7SqIdBdFGwAw==
+  dependencies:
+    iterare "1.2.1"
+    tslib "2.8.1"
+
 "@nestjs/platform-express@10.4.6":
   version "10.4.6"
   resolved "https://registry.yarnpkg.com/@nestjs/platform-express/-/platform-express-10.4.6.tgz#6c39c522fa66036b4256714fea203fbeb49fc4de"