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>
This commit is contained in:
czlonkowski
2025-06-24 09:28:59 +02:00
parent 197fc3303b
commit e7b6eace85
7 changed files with 1120 additions and 13 deletions

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@@ -120,7 +120,7 @@ export class ConfigValidator {
/**
* Check if a property is visible given current config
*/
private static isPropertyVisible(prop: any, config: Record<string, any>): boolean {
protected static isPropertyVisible(prop: any, config: Record<string, any>): boolean {
if (!prop.displayOptions) return true;
// Check show conditions

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

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@@ -0,0 +1,505 @@
/**
* Node-Specific Validators
*
* Provides detailed validation logic for commonly used n8n nodes.
* Each validator understands the specific requirements and patterns of its node.
*/
import { ValidationError, ValidationWarning } from './config-validator';
export interface NodeValidationContext {
config: Record<string, any>;
errors: ValidationError[];
warnings: ValidationWarning[];
suggestions: string[];
autofix: Record<string, any>;
}
export class NodeSpecificValidators {
/**
* Validate Slack node configuration with operation awareness
*/
static validateSlack(context: NodeValidationContext): void {
const { config, errors, warnings, suggestions } = context;
const { resource, operation } = config;
// Message operations
if (resource === 'message') {
switch (operation) {
case 'send':
this.validateSlackSendMessage(context);
break;
case 'update':
this.validateSlackUpdateMessage(context);
break;
case 'delete':
this.validateSlackDeleteMessage(context);
break;
}
}
// Channel operations
else if (resource === 'channel') {
switch (operation) {
case 'create':
this.validateSlackCreateChannel(context);
break;
case 'get':
case 'getAll':
// These operations have minimal requirements
break;
}
}
// User operations
else if (resource === 'user') {
if (operation === 'get' && !config.user) {
errors.push({
type: 'missing_required',
property: 'user',
message: 'User identifier required - use email, user ID, or username',
fix: 'Set user to an email like "john@example.com" or user ID like "U1234567890"'
});
}
}
}
private static validateSlackSendMessage(context: NodeValidationContext): void {
const { config, errors, warnings, suggestions, autofix } = context;
// Channel is required for sending messages
if (!config.channel && !config.channelId) {
errors.push({
type: 'missing_required',
property: 'channel',
message: 'Channel is required to send a message',
fix: 'Set channel to a channel name (e.g., "#general") or ID (e.g., "C1234567890")'
});
}
// Message content validation
if (!config.text && !config.blocks && !config.attachments) {
errors.push({
type: 'missing_required',
property: 'text',
message: 'Message content is required - provide text, blocks, or attachments',
fix: 'Add text field with your message content'
});
}
// Common patterns and suggestions
if (config.text && config.text.length > 40000) {
warnings.push({
type: 'inefficient',
property: 'text',
message: 'Message text exceeds Slack\'s 40,000 character limit',
suggestion: 'Split into multiple messages or use a file upload'
});
}
// Thread reply validation
if (config.replyToThread && !config.threadTs) {
warnings.push({
type: 'missing_common',
property: 'threadTs',
message: 'Thread timestamp required when replying to thread',
suggestion: 'Set threadTs to the timestamp of the thread parent message'
});
}
// Mention handling
if (config.text?.includes('@') && !config.linkNames) {
suggestions.push('Set linkNames=true to convert @mentions to user links');
autofix.linkNames = true;
}
}
private static validateSlackUpdateMessage(context: NodeValidationContext): void {
const { config, errors } = context;
if (!config.ts) {
errors.push({
type: 'missing_required',
property: 'ts',
message: 'Message timestamp (ts) is required to update a message',
fix: 'Provide the timestamp of the message to update'
});
}
if (!config.channel && !config.channelId) {
errors.push({
type: 'missing_required',
property: 'channel',
message: 'Channel is required to update a message',
fix: 'Provide the channel where the message exists'
});
}
}
private static validateSlackDeleteMessage(context: NodeValidationContext): void {
const { config, errors, warnings } = context;
if (!config.ts) {
errors.push({
type: 'missing_required',
property: 'ts',
message: 'Message timestamp (ts) is required to delete a message',
fix: 'Provide the timestamp of the message to delete'
});
}
if (!config.channel && !config.channelId) {
errors.push({
type: 'missing_required',
property: 'channel',
message: 'Channel is required to delete a message',
fix: 'Provide the channel where the message exists'
});
}
warnings.push({
type: 'security',
message: 'Message deletion is permanent and cannot be undone',
suggestion: 'Consider archiving or updating the message instead if you need to preserve history'
});
}
private static validateSlackCreateChannel(context: NodeValidationContext): void {
const { config, errors, warnings } = context;
if (!config.name) {
errors.push({
type: 'missing_required',
property: 'name',
message: 'Channel name is required',
fix: 'Provide a channel name (lowercase, no spaces, 1-80 characters)'
});
} else {
// Validate channel name format
const name = config.name;
if (name.includes(' ')) {
errors.push({
type: 'invalid_value',
property: 'name',
message: 'Channel names cannot contain spaces',
fix: 'Use hyphens or underscores instead of spaces'
});
}
if (name !== name.toLowerCase()) {
errors.push({
type: 'invalid_value',
property: 'name',
message: 'Channel names must be lowercase',
fix: 'Convert the channel name to lowercase'
});
}
if (name.length > 80) {
errors.push({
type: 'invalid_value',
property: 'name',
message: 'Channel name exceeds 80 character limit',
fix: 'Shorten the channel name'
});
}
}
}
/**
* Validate Google Sheets node configuration
*/
static validateGoogleSheets(context: NodeValidationContext): void {
const { config, errors, warnings, suggestions } = context;
const { operation } = config;
// Common validations
if (!config.sheetId && !config.documentId) {
errors.push({
type: 'missing_required',
property: 'sheetId',
message: 'Spreadsheet ID is required',
fix: 'Provide the Google Sheets document ID from the URL'
});
}
// Operation-specific validations
switch (operation) {
case 'append':
this.validateGoogleSheetsAppend(context);
break;
case 'read':
this.validateGoogleSheetsRead(context);
break;
case 'update':
this.validateGoogleSheetsUpdate(context);
break;
case 'delete':
this.validateGoogleSheetsDelete(context);
break;
}
// Range format validation
if (config.range) {
this.validateGoogleSheetsRange(config.range, errors, warnings);
}
}
private static validateGoogleSheetsAppend(context: NodeValidationContext): void {
const { config, errors, warnings, autofix } = context;
if (!config.range) {
errors.push({
type: 'missing_required',
property: 'range',
message: 'Range is required for append operation',
fix: 'Specify range like "Sheet1!A:B" or "Sheet1!A1:B10"'
});
}
// Check for common append settings
if (!config.options?.valueInputMode) {
warnings.push({
type: 'missing_common',
property: 'options.valueInputMode',
message: 'Consider setting valueInputMode for proper data formatting',
suggestion: 'Use "USER_ENTERED" to parse formulas and dates, or "RAW" for literal values'
});
autofix.options = { ...config.options, valueInputMode: 'USER_ENTERED' };
}
}
private static validateGoogleSheetsRead(context: NodeValidationContext): void {
const { config, errors, suggestions } = context;
if (!config.range) {
errors.push({
type: 'missing_required',
property: 'range',
message: 'Range is required for read operation',
fix: 'Specify range like "Sheet1!A:B" or "Sheet1!A1:B10"'
});
}
// Suggest data structure options
if (!config.options?.dataStructure) {
suggestions.push('Consider setting options.dataStructure to "object" for easier data manipulation');
}
}
private static validateGoogleSheetsUpdate(context: NodeValidationContext): void {
const { config, errors } = context;
if (!config.range) {
errors.push({
type: 'missing_required',
property: 'range',
message: 'Range is required for update operation',
fix: 'Specify the exact range to update like "Sheet1!A1:B10"'
});
}
if (!config.values && !config.rawData) {
errors.push({
type: 'missing_required',
property: 'values',
message: 'Values are required for update operation',
fix: 'Provide the data to write to the spreadsheet'
});
}
}
private static validateGoogleSheetsDelete(context: NodeValidationContext): void {
const { config, errors, warnings } = context;
if (!config.toDelete) {
errors.push({
type: 'missing_required',
property: 'toDelete',
message: 'Specify what to delete (rows or columns)',
fix: 'Set toDelete to "rows" or "columns"'
});
}
if (config.toDelete === 'rows' && !config.startIndex && config.startIndex !== 0) {
errors.push({
type: 'missing_required',
property: 'startIndex',
message: 'Start index is required when deleting rows',
fix: 'Specify the starting row index (0-based)'
});
}
warnings.push({
type: 'security',
message: 'Deletion is permanent. Consider backing up data first',
suggestion: 'Read the data before deletion to create a backup'
});
}
private static validateGoogleSheetsRange(
range: string,
errors: ValidationError[],
warnings: ValidationWarning[]
): void {
// Check basic format
if (!range.includes('!')) {
warnings.push({
type: 'inefficient',
property: 'range',
message: 'Range should include sheet name for clarity',
suggestion: 'Format: "SheetName!A1:B10" or "SheetName!A:B"'
});
}
// Check for common mistakes
if (range.includes(' ') && !range.match(/^'[^']+'/)) {
errors.push({
type: 'invalid_value',
property: 'range',
message: 'Sheet names with spaces must be quoted',
fix: 'Use single quotes around sheet name: \'Sheet Name\'!A1:B10'
});
}
// Validate A1 notation
const a1Pattern = /^('[^']+'|[^!]+)!([A-Z]+\d*:?[A-Z]*\d*|[A-Z]+:[A-Z]+|\d+:\d+)$/i;
if (!a1Pattern.test(range)) {
warnings.push({
type: 'inefficient',
property: 'range',
message: 'Range may not be in valid A1 notation',
suggestion: 'Examples: "Sheet1!A1:B10", "Sheet1!A:B", "Sheet1!1:10"'
});
}
}
/**
* Validate OpenAI node configuration
*/
static validateOpenAI(context: NodeValidationContext): void {
const { config, errors, warnings, suggestions } = context;
const { resource, operation } = config;
if (resource === 'chat' && operation === 'create') {
// Model validation
if (!config.model) {
errors.push({
type: 'missing_required',
property: 'model',
message: 'Model selection is required',
fix: 'Choose a model like "gpt-4", "gpt-3.5-turbo", etc.'
});
} else {
// Check for deprecated models
const deprecatedModels = ['text-davinci-003', 'text-davinci-002'];
if (deprecatedModels.includes(config.model)) {
warnings.push({
type: 'deprecated',
property: 'model',
message: `Model ${config.model} is deprecated`,
suggestion: 'Use "gpt-3.5-turbo" or "gpt-4" instead'
});
}
}
// Message validation
if (!config.messages && !config.prompt) {
errors.push({
type: 'missing_required',
property: 'messages',
message: 'Messages or prompt required for chat completion',
fix: 'Add messages array or use the prompt field'
});
}
// Token limit warnings
if (config.maxTokens && config.maxTokens > 4000) {
warnings.push({
type: 'inefficient',
property: 'maxTokens',
message: 'High token limit may increase costs significantly',
suggestion: 'Consider if you really need more than 4000 tokens'
});
}
// Temperature validation
if (config.temperature !== undefined) {
if (config.temperature < 0 || config.temperature > 2) {
errors.push({
type: 'invalid_value',
property: 'temperature',
message: 'Temperature must be between 0 and 2',
fix: 'Set temperature between 0 (deterministic) and 2 (creative)'
});
}
}
}
}
/**
* Validate MongoDB node configuration
*/
static validateMongoDB(context: NodeValidationContext): void {
const { config, errors, warnings } = context;
const { operation } = config;
// Collection is always required
if (!config.collection) {
errors.push({
type: 'missing_required',
property: 'collection',
message: 'Collection name is required',
fix: 'Specify the MongoDB collection to work with'
});
}
switch (operation) {
case 'find':
// Query validation
if (config.query) {
try {
JSON.parse(config.query);
} catch (e) {
errors.push({
type: 'invalid_value',
property: 'query',
message: 'Query must be valid JSON',
fix: 'Ensure query is valid JSON like: {"name": "John"}'
});
}
}
break;
case 'insert':
if (!config.fields && !config.documents) {
errors.push({
type: 'missing_required',
property: 'fields',
message: 'Document data is required for insert',
fix: 'Provide the data to insert'
});
}
break;
case 'update':
if (!config.query) {
warnings.push({
type: 'security',
message: 'Update without query will affect all documents',
suggestion: 'Add a query to target specific documents'
});
}
break;
case 'delete':
if (!config.query || config.query === '{}') {
errors.push({
type: 'invalid_value',
property: 'query',
message: 'Delete without query would remove all documents - this is a critical security issue',
fix: 'Add a query to specify which documents to delete'
});
}
break;
}
}
}