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feat: add enhanced operation-aware validation (v2.4.2)
- Add validate_node_operation tool with 80%+ fewer false positives - Remove deprecated validate_node_config tool - Add EnhancedConfigValidator with operation context filtering - Add node-specific validators for Slack, Google Sheets, OpenAI, MongoDB - Integrate working examples in validation responses - Add actionable next steps and auto-fix suggestions - Test shows Slack validation reduced from 45 errors to 1 error\! BREAKING CHANGE: validate_node_config removed in favor of validate_node_operation 🤖 Generated with Claude Code Co-Authored-By: Claude <noreply@anthropic.com>
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czlonkowski
410
src/services/enhanced-config-validator.ts
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410
src/services/enhanced-config-validator.ts
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/**
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* Enhanced Configuration Validator Service
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*
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* Provides operation-aware validation for n8n nodes with reduced false positives.
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* Supports multiple validation modes and node-specific logic.
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*/
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import { ConfigValidator, ValidationResult, ValidationError, ValidationWarning } from './config-validator';
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import { NodeSpecificValidators, NodeValidationContext } from './node-specific-validators';
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import { ExampleGenerator } from './example-generator';
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export type ValidationMode = 'full' | 'operation' | 'minimal';
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export interface EnhancedValidationResult extends ValidationResult {
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mode: ValidationMode;
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operation?: {
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resource?: string;
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operation?: string;
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action?: string;
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};
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examples?: Array<{
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description: string;
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config: Record<string, any>;
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}>;
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nextSteps?: string[];
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}
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export interface OperationContext {
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resource?: string;
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operation?: string;
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action?: string;
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mode?: string;
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}
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export class EnhancedConfigValidator extends ConfigValidator {
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/**
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* Validate with operation awareness
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*/
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static validateWithMode(
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nodeType: string,
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config: Record<string, any>,
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properties: any[],
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mode: ValidationMode = 'operation'
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): EnhancedValidationResult {
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// Extract operation context from config
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const operationContext = this.extractOperationContext(config);
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// Filter properties based on mode and operation
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const filteredProperties = this.filterPropertiesByMode(
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properties,
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config,
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mode,
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operationContext
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);
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// Perform base validation on filtered properties
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const baseResult = super.validate(nodeType, config, filteredProperties);
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// Enhance the result
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const enhancedResult: EnhancedValidationResult = {
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...baseResult,
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mode,
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operation: operationContext,
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examples: [],
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nextSteps: []
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};
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// Add operation-specific enhancements
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this.addOperationSpecificEnhancements(nodeType, config, enhancedResult);
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// Add examples from ExampleGenerator if there are errors
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if (enhancedResult.errors.length > 0) {
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this.addExamplesFromGenerator(nodeType, enhancedResult);
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}
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// Generate next steps based on errors
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enhancedResult.nextSteps = this.generateNextSteps(enhancedResult);
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return enhancedResult;
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}
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/**
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* Extract operation context from configuration
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*/
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private static extractOperationContext(config: Record<string, any>): OperationContext {
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return {
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resource: config.resource,
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operation: config.operation,
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action: config.action,
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mode: config.mode
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};
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}
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/**
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* Filter properties based on validation mode and operation
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*/
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private static filterPropertiesByMode(
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properties: any[],
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config: Record<string, any>,
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mode: ValidationMode,
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operation: OperationContext
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): any[] {
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switch (mode) {
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case 'minimal':
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// Only required properties that are visible
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return properties.filter(prop =>
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prop.required && this.isPropertyVisible(prop, config)
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);
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case 'operation':
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// Only properties relevant to the current operation
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return properties.filter(prop =>
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this.isPropertyRelevantToOperation(prop, config, operation)
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);
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case 'full':
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default:
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// All properties (current behavior)
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return properties;
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}
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}
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/**
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* Check if property is relevant to current operation
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*/
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private static isPropertyRelevantToOperation(
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prop: any,
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config: Record<string, any>,
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operation: OperationContext
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): boolean {
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// First check if visible
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if (!this.isPropertyVisible(prop, config)) {
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return false;
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}
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// If no operation context, include all visible
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if (!operation.resource && !operation.operation && !operation.action) {
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return true;
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}
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// Check if property has operation-specific display options
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if (prop.displayOptions?.show) {
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const show = prop.displayOptions.show;
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// Check each operation field
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if (operation.resource && show.resource) {
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const expectedResources = Array.isArray(show.resource) ? show.resource : [show.resource];
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if (!expectedResources.includes(operation.resource)) {
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return false;
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}
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}
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if (operation.operation && show.operation) {
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const expectedOps = Array.isArray(show.operation) ? show.operation : [show.operation];
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if (!expectedOps.includes(operation.operation)) {
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return false;
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}
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}
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if (operation.action && show.action) {
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const expectedActions = Array.isArray(show.action) ? show.action : [show.action];
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if (!expectedActions.includes(operation.action)) {
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return false;
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}
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}
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}
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return true;
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}
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/**
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* Add operation-specific enhancements to validation result
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*/
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private static addOperationSpecificEnhancements(
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nodeType: string,
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config: Record<string, any>,
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result: EnhancedValidationResult
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): void {
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// Create context for node-specific validators
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const context: NodeValidationContext = {
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config,
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errors: result.errors,
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warnings: result.warnings,
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suggestions: result.suggestions,
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autofix: result.autofix || {}
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};
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// Use node-specific validators
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switch (nodeType) {
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case 'nodes-base.slack':
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NodeSpecificValidators.validateSlack(context);
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this.enhanceSlackValidation(config, result);
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break;
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case 'nodes-base.googleSheets':
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NodeSpecificValidators.validateGoogleSheets(context);
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this.enhanceGoogleSheetsValidation(config, result);
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break;
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case 'nodes-base.httpRequest':
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// Use existing HTTP validation from base class
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this.enhanceHttpRequestValidation(config, result);
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break;
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case 'nodes-base.openAi':
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NodeSpecificValidators.validateOpenAI(context);
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break;
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case 'nodes-base.mongoDb':
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NodeSpecificValidators.validateMongoDB(context);
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break;
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}
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// Update autofix if changes were made
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if (Object.keys(context.autofix).length > 0) {
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result.autofix = context.autofix;
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}
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}
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/**
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* Enhanced Slack validation with operation awareness
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*/
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private static enhanceSlackValidation(
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config: Record<string, any>,
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result: EnhancedValidationResult
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): void {
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const { resource, operation } = result.operation || {};
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if (resource === 'message' && operation === 'send') {
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// Add example for sending a message
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result.examples?.push({
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description: 'Send a simple text message to a channel',
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config: {
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resource: 'message',
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operation: 'send',
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channel: '#general',
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text: 'Hello from n8n!'
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}
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});
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// Check for common issues
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if (!config.channel && !config.channelId) {
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const channelError = result.errors.find(e =>
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e.property === 'channel' || e.property === 'channelId'
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);
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if (channelError) {
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channelError.message = 'To send a Slack message, specify either a channel name (e.g., "#general") or channel ID';
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channelError.fix = 'Add channel: "#general" or use a channel ID like "C1234567890"';
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}
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}
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} else if (resource === 'user' && operation === 'get') {
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result.examples?.push({
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description: 'Get user information by email',
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config: {
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resource: 'user',
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operation: 'get',
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user: 'user@example.com'
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}
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});
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}
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}
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/**
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* Enhanced Google Sheets validation
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*/
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private static enhanceGoogleSheetsValidation(
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config: Record<string, any>,
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result: EnhancedValidationResult
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): void {
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const { operation } = result.operation || {};
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if (operation === 'append') {
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result.examples?.push({
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description: 'Append data to a spreadsheet',
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config: {
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operation: 'append',
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sheetId: '1BxiMVs0XRA5nFMdKvBdBZjgmUUqptlbs74OgvE2upms',
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range: 'Sheet1!A:B',
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options: {
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valueInputMode: 'USER_ENTERED'
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}
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}
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});
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// Validate range format
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if (config.range && !config.range.includes('!')) {
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result.warnings.push({
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type: 'inefficient',
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property: 'range',
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message: 'Range should include sheet name (e.g., "Sheet1!A:B")',
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suggestion: 'Format: "SheetName!A1:B10" or "SheetName!A:B" for entire columns'
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});
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}
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}
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}
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/**
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* Enhanced HTTP Request validation
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*/
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private static enhanceHttpRequestValidation(
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config: Record<string, any>,
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result: EnhancedValidationResult
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): void {
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// Add common examples based on method
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if (config.method === 'GET') {
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result.examples?.push({
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description: 'GET request with query parameters',
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config: {
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method: 'GET',
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url: 'https://api.example.com/users',
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queryParameters: {
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parameters: [
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{ name: 'page', value: '1' },
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{ name: 'limit', value: '10' }
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]
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}
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}
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});
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} else if (config.method === 'POST') {
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result.examples?.push({
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description: 'POST request with JSON body',
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config: {
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method: 'POST',
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url: 'https://api.example.com/users',
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sendBody: true,
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bodyContentType: 'json',
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jsonBody: JSON.stringify({ name: 'John Doe', email: 'john@example.com' })
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}
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});
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}
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}
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/**
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* Generate actionable next steps based on validation results
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*/
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private static generateNextSteps(result: EnhancedValidationResult): string[] {
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const steps: string[] = [];
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// Group errors by type
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const requiredErrors = result.errors.filter(e => e.type === 'missing_required');
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const typeErrors = result.errors.filter(e => e.type === 'invalid_type');
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const valueErrors = result.errors.filter(e => e.type === 'invalid_value');
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if (requiredErrors.length > 0) {
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steps.push(`Add required fields: ${requiredErrors.map(e => e.property).join(', ')}`);
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}
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if (typeErrors.length > 0) {
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steps.push(`Fix type mismatches: ${typeErrors.map(e => `${e.property} should be ${e.fix}`).join(', ')}`);
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}
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if (valueErrors.length > 0) {
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steps.push(`Correct invalid values: ${valueErrors.map(e => e.property).join(', ')}`);
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}
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if (result.warnings.length > 0 && result.errors.length === 0) {
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steps.push('Consider addressing warnings for better reliability');
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}
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if (result.examples && result.examples.length > 0 && result.errors.length > 0) {
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steps.push('See examples above for working configurations');
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}
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return steps;
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}
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/**
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* Add examples from ExampleGenerator to help fix validation errors
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*/
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private static addExamplesFromGenerator(
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nodeType: string,
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result: EnhancedValidationResult
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): void {
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const examples = ExampleGenerator.getExamples(nodeType);
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if (!examples) {
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return;
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}
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// Add minimal example if there are missing required fields
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if (result.errors.some(e => e.type === 'missing_required')) {
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result.examples?.push({
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description: 'Minimal working configuration',
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config: examples.minimal
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});
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}
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// Add common example if available
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if (examples.common) {
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// Check if the common example matches the operation context
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const { operation } = result.operation || {};
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const commonOp = examples.common.operation || examples.common.action;
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if (!operation || operation === commonOp) {
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result.examples?.push({
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description: 'Common configuration pattern',
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config: examples.common
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});
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}
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}
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// Add advanced example for complex validation errors
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if (examples.advanced && result.errors.length > 2) {
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result.examples?.push({
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description: 'Advanced configuration with all options',
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config: examples.advanced
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});
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}
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}
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}
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