refactor(infra): directory structure (#4615)

packages/backend/server/src/middleware/exception-logger.ts

@@ -0,0 +1,52 @@
+import {
+  ArgumentsHost,
+  Catch,
+  ExceptionFilter,
+  HttpException,
+  Logger,
+  NotFoundException,
+} from '@nestjs/common';
+import { GqlContextType } from '@nestjs/graphql';
+import { Request, Response } from 'express';
+
+import { REQUEST_ID } from '../constants';
+const TrivialExceptions = [NotFoundException];
+
+@Catch()
+export class ExceptionLogger implements ExceptionFilter {
+  private logger = new Logger('ExceptionLogger');
+
+  catch(exception: Error, host: ArgumentsHost) {
+    // with useGlobalFilters, the context is always HTTP
+    const ctx = host.switchToHttp();
+
+    const request = ctx.getRequest<Request>();
+    const requestId = request?.header(REQUEST_ID);
+
+    const shouldVerboseLog = !TrivialExceptions.some(
+      e => exception instanceof e
+    );
+    this.logger.error(
+      new Error(
+        `${requestId ? `requestId-${requestId}: ` : ''}${exception.message}${
+          shouldVerboseLog ? '\n' + exception.stack : ''
+        }}`,
+        { cause: exception }
+      )
+    );
+
+    if (host.getType<GqlContextType>() === 'graphql') {
+      return;
+    }
+
+    const response = ctx.getResponse<Response>();
+    if (exception instanceof HttpException) {
+      response.status(exception.getStatus()).json(exception.getResponse());
+    } else {
+      response.status(500).json({
+        statusCode: 500,
+        error: exception.message,
+      });
+    }
+  }
+}