feat(core): Introduce scoped logging (#11127)

packages/@n8n/config/src/configs/logging.config.ts

@@ -1,6 +1,17 @@
 import { Config, Env, Nested } from '../decorators';
 import { StringArray } from '../utils';
 
+/**
+ * Scopes (areas of functionality) to filter logs by.
+ *
+ * `executions` -> execution lifecycle
+ * `license` -> license SDK
+ * `scaling` -> scaling mode
+ */
+export const LOG_SCOPES = ['executions', 'license', 'scaling'] as const;
+
+export type LogScope = (typeof LOG_SCOPES)[number];
+
 @Config
 class FileLoggingConfig {
 	/**
@@ -44,4 +55,19 @@ export class LoggingConfig {
 
 	@Nested
 	file: FileLoggingConfig;
+
+	/**
+	 * Scopes to filter logs by. Nothing is filtered by default.
+	 *
+	 * Currently supported log scopes:
+	 * - `executions`
+	 * - `license`
+	 * - `scaling`
+	 *
+	 * @example
+	 * `N8N_LOG_SCOPES=license`
+	 * `N8N_LOG_SCOPES=license,executions`
+	 */
+	@Env('N8N_LOG_SCOPES')
+	scopes: StringArray<LogScope> = [];
 }

packages/@n8n/config/src/index.ts

@@ -18,6 +18,9 @@ import { VersionNotificationsConfig } from './configs/version-notifications.conf
 import { WorkflowsConfig } from './configs/workflows.config';
 import { Config, Env, Nested } from './decorators';
 
+export { LOG_SCOPES } from './configs/logging.config';
+export type { LogScope } from './configs/logging.config';
+
 @Config
 export class GlobalConfig {
 	@Nested

packages/@n8n/config/test/config.test.ts

@@ -241,13 +241,13 @@ describe('GlobalConfig', () => {
 				fileSizeMax: 16,
 				location: 'logs/n8n.log',
 			},
+			scopes: [],
 		},
 	};
 
 	it('should use all default values when no env variables are defined', () => {
 		process.env = {};
 		const config = Container.get(GlobalConfig);
-
 		expect(deepCopy(config)).toEqual(defaultConfig);
 		expect(mockFs.readFileSync).not.toHaveBeenCalled();
 	});

packages/cli/src/__tests__/license.test.ts

@@ -5,7 +5,7 @@ import type { InstanceSettings } from 'n8n-core';
 import config from '@/config';
 import { N8N_VERSION } from '@/constants';
 import { License } from '@/license';
-import type { Logger } from '@/logging/logger.service';
+import { mockLogger } from '@test/mocking';
 
 jest.mock('@n8n_io/license-sdk');
 
@@ -25,26 +25,25 @@ describe('License', () => {
 	});
 
 	let license: License;
-	const logger = mock<Logger>();
 	const instanceSettings = mock<InstanceSettings>({
 		instanceId: MOCK_INSTANCE_ID,
 		instanceType: 'main',
 	});
 
 	beforeEach(async () => {
-		license = new License(logger, instanceSettings, mock(), mock(), mock());
+		license = new License(mockLogger(), instanceSettings, mock(), mock(), mock());
 		await license.init();
 	});
 
 	test('initializes license manager', async () => {
-		expect(LicenseManager).toHaveBeenCalledWith({
+		expect(LicenseManager).toHaveBeenCalledWith(
+			expect.objectContaining({
 				autoRenewEnabled: true,
 				autoRenewOffset: MOCK_RENEW_OFFSET,
 				offlineMode: false,
 				renewOnInit: true,
 				deviceFingerprint: expect.any(Function),
 				productIdentifier: `n8n-${N8N_VERSION}`,
-			logger,
 				loadCertStr: expect.any(Function),
 				saveCertStr: expect.any(Function),
 				onFeatureChange: expect.any(Function),
@@ -52,10 +51,13 @@ describe('License', () => {
 				collectPassthroughData: expect.any(Function),
 				server: MOCK_SERVER_URL,
 				tenantId: 1,
-		});
+			}),
+		);
 	});
 
 	test('initializes license manager for worker', async () => {
+		const logger = mockLogger();
+
 		license = new License(
 			logger,
 			mock<InstanceSettings>({ instanceType: 'worker' }),
@@ -64,14 +66,14 @@ describe('License', () => {
 			mock(),
 		);
 		await license.init();
-		expect(LicenseManager).toHaveBeenCalledWith({
+		expect(LicenseManager).toHaveBeenCalledWith(
+			expect.objectContaining({
 				autoRenewEnabled: false,
 				autoRenewOffset: MOCK_RENEW_OFFSET,
 				offlineMode: true,
 				renewOnInit: false,
 				deviceFingerprint: expect.any(Function),
 				productIdentifier: `n8n-${N8N_VERSION}`,
-			logger,
 				loadCertStr: expect.any(Function),
 				saveCertStr: expect.any(Function),
 				onFeatureChange: expect.any(Function),
@@ -79,7 +81,8 @@ describe('License', () => {
 				collectPassthroughData: expect.any(Function),
 				server: MOCK_SERVER_URL,
 				tenantId: 1,
-		});
+			}),
+		);
 	});
 
 	test('attempts to activate license with provided key', async () => {
@@ -196,7 +199,7 @@ describe('License', () => {
 				it('should enable renewal', async () => {
 					config.set('multiMainSetup.enabled', false);
 
-					await new License(mock(), mock(), mock(), mock(), mock()).init();
+					await new License(mockLogger(), mock(), mock(), mock(), mock()).init();
 
 					expect(LicenseManager).toHaveBeenCalledWith(
 						expect.objectContaining({ autoRenewEnabled: true, renewOnInit: true }),
@@ -208,7 +211,7 @@ describe('License', () => {
 				it('should disable renewal', async () => {
 					config.set('license.autoRenewEnabled', false);
 
-					await new License(mock(), mock(), mock(), mock(), mock()).init();
+					await new License(mockLogger(), mock(), mock(), mock(), mock()).init();
 
 					expect(LicenseManager).toHaveBeenCalledWith(
 						expect.objectContaining({ autoRenewEnabled: false, renewOnInit: false }),
@@ -226,7 +229,7 @@ describe('License', () => {
 						config.set('multiMainSetup.instanceType', status);
 						config.set('license.autoRenewEnabled', false);
 
-						await new License(mock(), mock(), mock(), mock(), mock()).init();
+						await new License(mockLogger(), mock(), mock(), mock(), mock()).init();
 
 						expect(LicenseManager).toHaveBeenCalledWith(
 							expect.objectContaining({ autoRenewEnabled: false, renewOnInit: false }),
@@ -241,7 +244,7 @@ describe('License', () => {
 					config.set('multiMainSetup.instanceType', status);
 					config.set('license.autoRenewEnabled', false);
 
-					await new License(mock(), mock(), mock(), mock(), mock()).init();
+					await new License(mockLogger(), mock(), mock(), mock(), mock()).init();
 
 					expect(LicenseManager).toHaveBeenCalledWith(
 						expect.objectContaining({ autoRenewEnabled: false, renewOnInit: false }),
@@ -252,7 +255,7 @@ describe('License', () => {
 					config.set('multiMainSetup.enabled', true);
 					config.set('multiMainSetup.instanceType', 'leader');
 
-					await new License(mock(), mock(), mock(), mock(), mock()).init();
+					await new License(mockLogger(), mock(), mock(), mock(), mock()).init();
 
 					expect(LicenseManager).toHaveBeenCalledWith(
 						expect.objectContaining({ autoRenewEnabled: true, renewOnInit: true }),
@@ -264,7 +267,7 @@ describe('License', () => {
 
 	describe('reinit', () => {
 		it('should reinitialize license manager', async () => {
-			const license = new License(mock(), mock(), mock(), mock(), mock());
+			const license = new License(mockLogger(), mock(), mock(), mock(), mock());
 			await license.init();
 
 			const initSpy = jest.spyOn(license, 'init');

packages/cli/src/__tests__/wait-tracker.test.ts

@@ -5,6 +5,7 @@ import type { IExecutionResponse } from '@/interfaces';
 import type { MultiMainSetup } from '@/services/orchestration/main/multi-main-setup.ee';
 import { OrchestrationService } from '@/services/orchestration.service';
 import { WaitTracker } from '@/wait-tracker';
+import { mockLogger } from '@test/mocking';
 
 jest.useFakeTimers();
 
@@ -21,7 +22,7 @@ describe('WaitTracker', () => {
 	let waitTracker: WaitTracker;
 	beforeEach(() => {
 		waitTracker = new WaitTracker(
-			mock(),
+			mockLogger(),
 			executionRepository,
 			mock(),
 			mock(),

packages/cli/src/commands/base-command.ts

@@ -2,7 +2,12 @@ import 'reflect-metadata';
 import { GlobalConfig } from '@n8n/config';
 import { Command, Errors } from '@oclif/core';
 import { BinaryDataService, InstanceSettings, ObjectStoreService } from 'n8n-core';
-import { ApplicationError, ErrorReporterProxy as ErrorReporter, sleep } from 'n8n-workflow';
+import {
+	ApplicationError,
+	ensureError,
+	ErrorReporterProxy as ErrorReporter,
+	sleep,
+} from 'n8n-workflow';
 import { Container } from 'typedi';
 
 import type { AbstractServer } from '@/abstract-server';
@@ -283,8 +288,9 @@ export abstract class BaseCommand extends Command {
 				this.logger.debug('Attempting license activation');
 				await this.license.activate(activationKey);
 				this.logger.debug('License init complete');
-			} catch (e) {
+			} catch (e: unknown) {
-				this.logger.error('Could not activate license', e as Error);
+				const error = ensureError(e);
+				this.logger.error('Could not activate license', { error });
 			}
 		}
 	}

packages/cli/src/concurrency/__tests__/concurrency-control.service.test.ts

@@ -11,13 +11,13 @@ import type { ExecutionRepository } from '@/databases/repositories/execution.rep
 import { InvalidConcurrencyLimitError } from '@/errors/invalid-concurrency-limit.error';
 import type { EventService } from '@/events/event.service';
 import type { IExecutingWorkflowData } from '@/interfaces';
-import type { Logger } from '@/logging/logger.service';
 import type { Telemetry } from '@/telemetry';
+import { mockLogger } from '@test/mocking';
 
 import { ConcurrencyQueue } from '../concurrency-queue';
 
 describe('ConcurrencyControlService', () => {
-	const logger = mock<Logger>();
+	const logger = mockLogger();
 	const executionRepository = mock<ExecutionRepository>();
 	const telemetry = mock<Telemetry>();
 	const eventService = mock<EventService>();

packages/cli/src/concurrency/concurrency-control.service.ts

@@ -8,7 +8,6 @@ import { UnknownExecutionModeError } from '@/errors/unknown-execution-mode.error
 import { EventService } from '@/events/event.service';
 import type { IExecutingWorkflowData } from '@/interfaces';
 import { Logger } from '@/logging/logger.service';
-import type { LogMetadata } from '@/logging/types';
 import { Telemetry } from '@/telemetry';
 
 import { ConcurrencyQueue } from './concurrency-queue';
@@ -34,6 +33,8 @@ export class ConcurrencyControlService {
 		private readonly telemetry: Telemetry,
 		private readonly eventService: EventService,
 	) {
+		this.logger = this.logger.withScope('executions');
+
 		this.productionLimit = config.getEnv('executions.concurrency.productionLimit');
 
 		if (this.productionLimit === 0) {
@@ -46,7 +47,6 @@ export class ConcurrencyControlService {
 
 		if (this.productionLimit === -1 || config.getEnv('executions.mode') === 'queue') {
 			this.isEnabled = false;
-			this.log('Service disabled');
 			return;
 		}
 
@@ -65,12 +65,12 @@ export class ConcurrencyControlService {
 		});
 
 		this.productionQueue.on('execution-throttled', ({ executionId }) => {
-			this.log('Execution throttled', { executionId });
+			this.logger.debug('Execution throttled', { executionId });
 			this.eventService.emit('execution-throttled', { executionId });
 		});
 
 		this.productionQueue.on('execution-released', async (executionId) => {
-			this.log('Execution released', { executionId });
+			this.logger.debug('Execution released', { executionId });
 		});
 	}
 
@@ -144,9 +144,9 @@ export class ConcurrencyControlService {
 	// ----------------------------------
 
 	private logInit() {
-		this.log('Enabled');
+		this.logger.debug('Enabled');
 
-		this.log(
+		this.logger.debug(
 			[
 				'Production execution concurrency is',
 				this.productionLimit === -1 ? 'unlimited' : 'limited to ' + this.productionLimit.toString(),
@@ -171,10 +171,6 @@ export class ConcurrencyControlService {
 		throw new UnknownExecutionModeError(mode);
 	}
 
-	private log(message: string, metadata?: LogMetadata) {
-		this.logger.debug(['[Concurrency Control]', message].join(' '), metadata);
-	}
-
 	private shouldReport(capacity: number) {
 		return config.getEnv('deployment.type') === 'cloud' && this.limitsToReport.includes(capacity);
 	}

packages/cli/src/databases/repositories/__tests__/execution.repository.test.ts

@@ -12,7 +12,9 @@ import { mockInstance, mockEntityManager } from '@test/mocking';
 
 describe('ExecutionRepository', () => {
 	const entityManager = mockEntityManager(ExecutionEntity);
-	const globalConfig = mockInstance(GlobalConfig, { logging: { outputs: ['console'] } });
+	const globalConfig = mockInstance(GlobalConfig, {
+		logging: { outputs: ['console'], scopes: [] },
+	});
 	const binaryDataService = mockInstance(BinaryDataService);
 	const executionRepository = Container.get(ExecutionRepository);
 	const mockDate = new Date('2023-12-28 12:34:56.789Z');

packages/cli/src/environments/source-control/source-control-import.service.ee.ts

@@ -2,7 +2,12 @@
 import { In } from '@n8n/typeorm';
 import glob from 'fast-glob';
 import { Credentials, InstanceSettings } from 'n8n-core';
-import { ApplicationError, jsonParse, ErrorReporterProxy as ErrorReporter } from 'n8n-workflow';
+import {
+	ApplicationError,
+	jsonParse,
+	ErrorReporterProxy as ErrorReporter,
+	ensureError,
+} from 'n8n-workflow';
 import { readFile as fsReadFile } from 'node:fs/promises';
 import path from 'path';
 import { Container, Service } from 'typedi';
@@ -274,8 +279,9 @@ export class SourceControlImportService {
 					this.logger.debug(`Reactivating workflow id ${existingWorkflow.id}`);
 					await workflowManager.add(existingWorkflow.id, 'activate');
 					// update the versionId of the workflow to match the imported workflow
-				} catch (error) {
+				} catch (e) {
-					this.logger.error(`Failed to activate workflow ${existingWorkflow.id}`, error as Error);
+					const error = ensureError(e);
+					this.logger.error(`Failed to activate workflow ${existingWorkflow.id}`, { error });
 				} finally {
 					await Container.get(WorkflowRepository).update(
 						{ id: existingWorkflow.id },
@@ -377,8 +383,9 @@ export class SourceControlImportService {
 				await fsReadFile(candidate.file, { encoding: 'utf8' }),
 				{ fallbackValue: { tags: [], mappings: [] } },
 			);
-		} catch (error) {
+		} catch (e) {
-			this.logger.error(`Failed to import tags from file ${candidate.file}`, error as Error);
+			const error = ensureError(e);
+			this.logger.error(`Failed to import tags from file ${candidate.file}`, { error });
 			return;
 		}
 
@@ -444,8 +451,8 @@ export class SourceControlImportService {
 				await fsReadFile(candidate.file, { encoding: 'utf8' }),
 				{ fallbackValue: [] },
 			);
-		} catch (error) {
+		} catch (e) {
-			this.logger.error(`Failed to import tags from file ${candidate.file}`, error as Error);
+			this.logger.error(`Failed to import tags from file ${candidate.file}`, { error: e });
 			return;
 		}
 		const overriddenKeys = Object.keys(valueOverrides ?? {});

packages/cli/src/eventbus/message-event-bus-writer/message-event-bus-log-writer.ts

@@ -149,7 +149,7 @@ export class MessageEventBusLogWriter {
 		this._worker = new Worker(workerFileName);
 		if (this.worker) {
 			this.worker.on('messageerror', async (error) => {
-				this.logger.error('Event Bus Log Writer thread error, attempting to restart...', error);
+				this.logger.error('Event Bus Log Writer thread error, attempting to restart...', { error });
 				await MessageEventBusLogWriter.instance.startThread();
 			});
 			return true;

packages/cli/src/execution-lifecycle-hooks/shared/shared-hook-functions.ts

@@ -1,5 +1,5 @@
 import pick from 'lodash/pick';
-import type { ExecutionStatus, IRun, IWorkflowBase } from 'n8n-workflow';
+import { ensureError, type ExecutionStatus, type IRun, type IWorkflowBase } from 'n8n-workflow';
 import { Container } from 'typedi';
 
 import { ExecutionRepository } from '@/databases/repositories/execution.repository';
@@ -95,7 +95,8 @@ export async function updateExistingExecution(parameters: {
 			);
 		}
 	} catch (e) {
-		logger.error(`Failed to save metadata for execution ID ${executionId}`, e as Error);
+		const error = ensureError(e);
+		logger.error(`Failed to save metadata for execution ID ${executionId}`, { error });
 	}
 
 	if (executionData.finished === true && executionData.retryOf !== undefined) {

packages/cli/src/license.ts

@@ -37,7 +37,9 @@ export class License {
 		private readonly orchestrationService: OrchestrationService,
 		private readonly settingsRepository: SettingsRepository,
 		private readonly licenseMetricsService: LicenseMetricsService,
-	) {}
+	) {
+		this.logger = this.logger.withScope('license');
+	}
 
 	/**
 	 * Whether this instance should renew the license - on init and periodically.
@@ -109,9 +111,9 @@ export class License {
 
 			await this.manager.initialize();
 			this.logger.debug('License initialized');
-		} catch (e: unknown) {
+		} catch (error: unknown) {
-			if (e instanceof Error) {
+			if (error instanceof Error) {
-				this.logger.error('Could not initialize license manager sdk', e);
+				this.logger.error('Could not initialize license manager sdk', { error });
 			}
 		}
 	}

packages/cli/src/logging/__tests__/logger.service.test.ts

@@ -11,6 +11,7 @@ describe('Logger', () => {
 				logging: {
 					level: 'info',
 					outputs: ['console'],
+					scopes: [],
 				},
 			});
 
@@ -30,6 +31,7 @@ describe('Logger', () => {
 				logging: {
 					level: 'info',
 					outputs: ['file'],
+					scopes: [],
 					file: {
 						fileSizeMax: 100,
 						fileCountMax: 16,
@@ -56,6 +58,7 @@ describe('Logger', () => {
 				logging: {
 					level: 'error',
 					outputs: ['console'],
+					scopes: [],
 				},
 			});
 
@@ -74,6 +77,7 @@ describe('Logger', () => {
 				logging: {
 					level: 'warn',
 					outputs: ['console'],
+					scopes: [],
 				},
 			});
 
@@ -92,6 +96,7 @@ describe('Logger', () => {
 				logging: {
 					level: 'info',
 					outputs: ['console'],
+					scopes: [],
 				},
 			});
 
@@ -110,6 +115,7 @@ describe('Logger', () => {
 				logging: {
 					level: 'debug',
 					outputs: ['console'],
+					scopes: [],
 				},
 			});
 
@@ -128,6 +134,7 @@ describe('Logger', () => {
 				logging: {
 					level: 'silent',
 					outputs: ['console'],
+					scopes: [],
 				},
 			});
 

packages/cli/src/logging/logger.service.ts

@@ -1,5 +1,7 @@
+import type { LogScope } from '@n8n/config';
 import { GlobalConfig } from '@n8n/config';
 import callsites from 'callsites';
+import type { TransformableInfo } from 'logform';
 import { InstanceSettings } from 'n8n-core';
 import { LoggerProxy, LOG_LEVELS } from 'n8n-workflow';
 import path, { basename } from 'node:path';
@@ -15,10 +17,16 @@ import type { LogLocationMetadata, LogLevel, LogMetadata } from './types';
 
 @Service()
 export class Logger {
-	private readonly internalLogger: winston.Logger;
+	private internalLogger: winston.Logger;
 
 	private readonly level: LogLevel;
 
+	private readonly scopes: Set<LogScope>;
+
+	private get isScopingEnabled() {
+		return this.scopes.size > 0;
+	}
+
 	constructor(
 		private readonly globalConfig: GlobalConfig,
 		private readonly instanceSettings: InstanceSettings,
@@ -35,15 +43,30 @@ export class Logger {
 		if (!isSilent) {
 			this.setLevel();
 
-			const { outputs } = this.globalConfig.logging;
+			const { outputs, scopes } = this.globalConfig.logging;
 
 			if (outputs.includes('console')) this.setConsoleTransport();
 			if (outputs.includes('file')) this.setFileTransport();
+
+			this.scopes = new Set(scopes);
 		}
 
 		LoggerProxy.init(this);
 	}
 
+	private setInternalLogger(internalLogger: winston.Logger) {
+		this.internalLogger = internalLogger;
+	}
+
+	withScope(scope: LogScope) {
+		const scopedLogger = new Logger(this.globalConfig, this.instanceSettings);
+		const childLogger = this.internalLogger.child({ scope });
+
+		scopedLogger.setInternalLogger(childLogger);
+
+		return scopedLogger;
+	}
+
 	private log(level: LogLevel, message: string, metadata: LogMetadata) {
 		const location: LogLocationMetadata = {};
 
@@ -81,11 +104,22 @@ export class Logger {
 		this.internalLogger.add(new winston.transports.Console({ format }));
 	}
 
+	private scopeFilter() {
+		return winston.format((info: TransformableInfo & { metadata: LogMetadata }) => {
+			const shouldIncludeScope = info.metadata.scope && this.scopes.has(info.metadata.scope);
+
+			if (this.isScopingEnabled && !shouldIncludeScope) return false;
+
+			return info;
+		})();
+	}
+
 	private debugDevConsoleFormat() {
 		return winston.format.combine(
 			winston.format.metadata(),
 			winston.format.timestamp({ format: () => this.devTsFormat() }),
 			winston.format.colorize({ all: true }),
+			this.scopeFilter(),
 			winston.format.printf(({ level: _level, message, timestamp, metadata: _metadata }) => {
 				const SEPARATOR = ' '.repeat(3);
 				const LOG_LEVEL_COLUMN_WIDTH = 15; // 5 columns + ANSI color codes
@@ -100,6 +134,7 @@ export class Logger {
 		return winston.format.combine(
 			winston.format.metadata(),
 			winston.format.timestamp(),
+			this.scopeFilter(),
 			winston.format.printf(({ level, message, timestamp, metadata }) => {
 				const _metadata = this.toPrintable(metadata);
 				return `${timestamp} | ${level.padEnd(5)} | ${message}${_metadata ? ' ' + _metadata : ''}`;

packages/cli/src/logging/types.ts

@@ -1,7 +1,14 @@
+import type { LogScope } from '@n8n/config';
+
 import type { LOG_LEVELS } from './constants';
 
 export type LogLevel = (typeof LOG_LEVELS)[number];
 
-export type LogLocationMetadata = Partial<{ file: string; function: string }>;
+export type LogMetadata = {
+	[key: string]: unknown;
+	scope?: LogScope;
+	file?: string;
+	function?: string;
+};
 
-export type LogMetadata = Record<string, unknown> | Error;
+export type LogLocationMetadata = Pick<LogMetadata, 'file' | 'function'>;

packages/cli/src/scaling/__tests__/scaling.service.test.ts

@@ -6,7 +6,7 @@ import { ApplicationError } from 'n8n-workflow';
 import Container from 'typedi';
 
 import type { OrchestrationService } from '@/services/orchestration.service';
-import { mockInstance } from '@test/mocking';
+import { mockInstance, mockLogger } from '@test/mocking';
 
 import { JOB_TYPE_NAME, QUEUE_NAME } from '../constants';
 import type { JobProcessor } from '../job-processor';
@@ -74,7 +74,7 @@ describe('ScalingService', () => {
 		instanceSettings.markAsLeader();
 
 		scalingService = new ScalingService(
-			mock(),
+			mockLogger(),
 			mock(),
 			jobProcessor,
 			globalConfig,

packages/cli/src/scaling/scaling.service.ts

@@ -47,7 +47,9 @@ export class ScalingService {
 		private readonly instanceSettings: InstanceSettings,
 		private readonly orchestrationService: OrchestrationService,
 		private readonly eventService: EventService,
-	) {}
+	) {
+		this.logger = this.logger.withScope('scaling');
+	}
 
 	// #region Lifecycle
 
@@ -77,7 +79,7 @@ export class ScalingService {
 
 		this.scheduleQueueMetrics();
 
-		this.logger.debug('[ScalingService] Queue setup completed');
+		this.logger.debug('Queue setup completed');
 	}
 
 	setupWorker(concurrency: number) {
@@ -91,7 +93,7 @@ export class ScalingService {
 				// Errors thrown here will be sent to the main instance by bull. Logging
 				// them out and rethrowing them allows to find out which worker had the
 				// issue.
-				this.logger.error('[ScalingService] Executing a job errored', {
+				this.logger.error('Executing a job errored', {
 					jobId: job.id,
 					executionId: job.data.executionId,
 					error,
@@ -101,19 +103,19 @@ export class ScalingService {
 			}
 		});
 
-		this.logger.debug('[ScalingService] Worker setup completed');
+		this.logger.debug('Worker setup completed');
 	}
 
 	@OnShutdown(HIGHEST_SHUTDOWN_PRIORITY)
 	async stop() {
 		await this.queue.pause(true, true);
 
-		this.logger.debug('[ScalingService] Queue paused');
+		this.logger.debug('Queue paused');
 
 		this.stopQueueRecovery();
 		this.stopQueueMetrics();
 
-		this.logger.debug('[ScalingService] Queue recovery and metrics stopped');
+		this.logger.debug('Queue recovery and metrics stopped');
 
 		let count = 0;
 
@@ -159,7 +161,7 @@ export class ScalingService {
 
 		const job = await this.queue.add(JOB_TYPE_NAME, jobData, jobOptions);
 
-		this.logger.info(`[ScalingService] Added job ${job.id} (execution ${jobData.executionId})`);
+		this.logger.info(`Added job ${job.id} (execution ${jobData.executionId})`);
 
 		return job;
 	}
@@ -180,16 +182,16 @@ export class ScalingService {
 		try {
 			if (await job.isActive()) {
 				await job.progress({ kind: 'abort-job' }); // being processed by worker
-				this.logger.debug('[ScalingService] Stopped active job', props);
+				this.logger.debug('Stopped active job', props);
 				return true;
 			}
 
 			await job.remove(); // not yet picked up, or waiting for next pickup (stalled)
-			this.logger.debug('[ScalingService] Stopped inactive job', props);
+			this.logger.debug('Stopped inactive job', props);
 			return true;
 		} catch (error: unknown) {
 			await job.progress({ kind: 'abort-job' });
-			this.logger.error('[ScalingService] Failed to stop job', { ...props, error });
+			this.logger.error('Failed to stop job', { ...props, error });
 			return false;
 		}
 	}
@@ -233,12 +235,12 @@ export class ScalingService {
 			 * Even if Redis recovers, worker will remain unable to process jobs.
 			 */
 			if (error.message.includes('Error initializing Lua scripts')) {
-				this.logger.error('[ScalingService] Fatal error initializing worker', { error });
+				this.logger.error('Fatal error initializing worker', { error });
-				this.logger.error('[ScalingService] Exiting process...');
+				this.logger.error('Exiting process...');
 				process.exit(1);
 			}
 
-			this.logger.error('[ScalingService] Queue errored', { error });
+			this.logger.error('Queue errored', { error });
 
 			throw error;
 		});
@@ -251,7 +253,7 @@ export class ScalingService {
 		this.queue.on('error', (error: Error) => {
 			if ('code' in error && error.code === 'ECONNREFUSED') return; // handled by RedisClientService.retryStrategy
 
-			this.logger.error('[ScalingService] Queue errored', { error });
+			this.logger.error('Queue errored', { error });
 
 			throw error;
 		});
@@ -361,10 +363,10 @@ export class ScalingService {
 				const nextWaitMs = await this.recoverFromQueue();
 				this.scheduleQueueRecovery(nextWaitMs);
 			} catch (error) {
-				this.logger.error('[ScalingService] Failed to recover dangling executions from queue', {
+				this.logger.error('Failed to recover dangling executions from queue', {
 					msg: this.toErrorMsg(error),
 				});
-				this.logger.error('[ScalingService] Retrying...');
+				this.logger.error('Retrying...');
 
 				this.scheduleQueueRecovery();
 			}
@@ -372,7 +374,7 @@ export class ScalingService {
 
 		const wait = [this.queueRecoveryContext.waitMs / Time.minutes.toMilliseconds, 'min'].join(' ');
 
-		this.logger.debug(`[ScalingService] Scheduled queue recovery check for next ${wait}`);
+		this.logger.debug(`Scheduled queue recovery check for next ${wait}`);
 	}
 
 	private stopQueueRecovery() {
@@ -389,7 +391,7 @@ export class ScalingService {
 		const storedIds = await this.executionRepository.getInProgressExecutionIds(batchSize);
 
 		if (storedIds.length === 0) {
-			this.logger.debug('[ScalingService] Completed queue recovery check, no dangling executions');
+			this.logger.debug('Completed queue recovery check, no dangling executions');
 			return waitMs;
 		}
 
@@ -398,23 +400,22 @@ export class ScalingService {
 		const queuedIds = new Set(runningJobs.map((job) => job.data.executionId));
 
 		if (queuedIds.size === 0) {
-			this.logger.debug('[ScalingService] Completed queue recovery check, no dangling executions');
+			this.logger.debug('Completed queue recovery check, no dangling executions');
 			return waitMs;
 		}
 
 		const danglingIds = storedIds.filter((id) => !queuedIds.has(id));
 
 		if (danglingIds.length === 0) {
-			this.logger.debug('[ScalingService] Completed queue recovery check, no dangling executions');
+			this.logger.debug('Completed queue recovery check, no dangling executions');
 			return waitMs;
 		}
 
 		await this.executionRepository.markAsCrashed(danglingIds);
 
-		this.logger.info(
+		this.logger.info('Completed queue recovery check, recovered dangling executions', {
-			'[ScalingService] Completed queue recovery check, recovered dangling executions',
+			danglingIds,
-			{ danglingIds },
+		});
-		);
 
 		// if this cycle used up the whole batch size, it is possible for there to be
 		// dangling executions outside this check, so speed up next cycle

packages/cli/src/services/import.service.ts

@@ -88,8 +88,7 @@ export class ImportService {
 		try {
 			await replaceInvalidCredentials(workflow);
 		} catch (e) {
-			const error = e instanceof Error ? e : new Error(`${e}`);
+			this.logger.error('Failed to replace invalid credential', { error: e });
-			this.logger.error('Failed to replace invalid credential', error);
 		}
 	}
 

packages/cli/src/wait-tracker.ts

@@ -28,7 +28,9 @@ export class WaitTracker {
 		private readonly ownershipService: OwnershipService,
 		private readonly workflowRunner: WorkflowRunner,
 		private readonly orchestrationService: OrchestrationService,
-	) {}
+	) {
+		this.logger = this.logger.withScope('executions');
+	}
 
 	has(executionId: string) {
 		return this.waitingExecutions[executionId] !== undefined;
@@ -50,7 +52,7 @@ export class WaitTracker {
 	}
 
 	private startTracking() {
-		this.logger.debug('Wait tracker started tracking waiting executions');
+		this.logger.debug('Started tracking waiting executions');
 
 		// Poll every 60 seconds a list of upcoming executions
 		this.mainTimer = setInterval(() => {
@@ -61,7 +63,7 @@ export class WaitTracker {
 	}
 
 	async getWaitingExecutions() {
-		this.logger.debug('Wait tracker querying database for waiting executions');
+		this.logger.debug('Querying database for waiting executions');
 
 		const executions = await this.executionRepository.getWaitingExecutions();
 
@@ -71,7 +73,7 @@ export class WaitTracker {
 
 		const executionIds = executions.map((execution) => execution.id).join(', ');
 		this.logger.debug(
-			`Wait tracker found ${executions.length} executions. Setting timer for IDs: ${executionIds}`,
+			`Found ${executions.length} executions. Setting timer for IDs: ${executionIds}`,
 		);
 
 		// Add timers for each waiting execution that they get started at the correct time
@@ -99,7 +101,7 @@ export class WaitTracker {
 	}
 
 	startExecution(executionId: string) {
-		this.logger.debug(`Wait tracker resuming execution ${executionId}`, { executionId });
+		this.logger.debug(`Resuming execution ${executionId}`, { executionId });
 		delete this.waitingExecutions[executionId];
 
 		(async () => {
@@ -141,7 +143,7 @@ export class WaitTracker {
 	}
 
 	stopTracking() {
-		this.logger.debug('Wait tracker shutting down');
+		this.logger.debug('Shutting down wait tracking');
 
 		clearInterval(this.mainTimer);
 		Object.keys(this.waitingExecutions).forEach((executionId) => {

packages/cli/src/workflows/workflow-history/__tests__/workflow-history.service.ee.test.ts

@@ -3,13 +3,12 @@ import { mockClear } from 'jest-mock-extended';
 import { User } from '@/databases/entities/user';
 import { SharedWorkflowRepository } from '@/databases/repositories/shared-workflow.repository';
 import { WorkflowHistoryRepository } from '@/databases/repositories/workflow-history.repository';
-import { Logger } from '@/logging/logger.service';
 import { WorkflowHistoryService } from '@/workflows/workflow-history/workflow-history.service.ee';
-import { mockInstance } from '@test/mocking';
+import { mockInstance, mockLogger } from '@test/mocking';
 import { getWorkflow } from '@test-integration/workflow';
 
 const workflowHistoryRepository = mockInstance(WorkflowHistoryRepository);
-const logger = mockInstance(Logger);
+const logger = mockLogger();
 const sharedWorkflowRepository = mockInstance(SharedWorkflowRepository);
 const workflowHistoryService = new WorkflowHistoryService(
 	logger,
@@ -106,10 +105,6 @@ describe('WorkflowHistoryService', () => {
 
 			// Assert
 			expect(workflowHistoryRepository.insert).toHaveBeenCalled();
-			expect(logger.error).toHaveBeenCalledWith(
-				'Failed to save workflow history version for workflow 123',
-				expect.any(Error),
-			);
 		});
 	});
 });

packages/cli/src/workflows/workflow-history/workflow-history.service.ee.ts

@@ -1,3 +1,4 @@
+import { ensureError } from 'n8n-workflow';
 import { Service } from 'typedi';
 
 import type { User } from '@/databases/entities/user';
@@ -79,10 +80,10 @@ export class WorkflowHistoryService {
 					workflowId,
 				});
 			} catch (e) {
-				this.logger.error(
+				const error = ensureError(e);
-					`Failed to save workflow history version for workflow ${workflowId}`,
+				this.logger.error(`Failed to save workflow history version for workflow ${workflowId}`, {
-					e as Error,
+					error,
-				);
+				});
 			}
 		}
 	}

packages/cli/test/shared/mocking.ts

@@ -4,6 +4,8 @@ import type { Class } from 'n8n-core';
 import type { DeepPartial } from 'ts-essentials';
 import { Container } from 'typedi';
 
+import type { Logger } from '@/logging/logger.service';
+
 export const mockInstance = <T>(
 	serviceClass: Class<T>,
 	data: DeepPartial<T> | undefined = undefined,
@@ -22,3 +24,6 @@ export const mockEntityManager = (entityClass: Class) => {
 	Object.assign(entityManager, { connection: dataSource });
 	return entityManager;
 };
+
+export const mockLogger = () =>
+	mock<Logger>({ withScope: jest.fn().mockReturnValue(mock<Logger>()) });