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* Schema Validator for rosetta.yaml
* Validates rosetta.yaml files against the JSON Schema
*/
import Ajv from 'ajv';
import addFormats from 'ajv-formats';
import fs from 'fs-extra';
import path from 'path';
import { fileURLToPath } from 'url';
const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);
// Load the schema
const schemaPath = path.join(__dirname, '../../schemas/rosetta-schema.json');
let schema;
try {
schema = JSON.parse(fs.readFileSync(schemaPath, 'utf8'));
} catch (error) {
throw new Error(`Failed to load schema from ${schemaPath}: ${error.message}`);
}
// Initialize AJV with all errors for detailed reporting
const ajv = new Ajv({
allErrors: true,
verbose: true,
strict: false
});
addFormats(ajv);
/**
* Validate a YAML object against the rosetta schema
* @param {Object} yamlObject - The parsed YAML object to validate
* @returns {Object} Validation result with valid flag and errors array
*/
export function validateYAML(yamlObject) {
const validate = ajv.compile(schema);
const valid = validate(yamlObject);
if (!valid) {
return {
valid: false,
errors: validate.errors.map(err => ({
path: err.instancePath || '(root)',
property: err.instancePath?.split('/').pop() || 'root',
message: err.message,
expected: formatExpectedValue(err),
actual: formatActualValue(err),
keyword: err.keyword
}))
};
}
return { valid: true };
}
/**
* Format the expected value for error messages
*/
function formatExpectedValue(error) {
Iif (error.keyword === 'type') {
return error.params.type;
}
if (error.keyword === 'enum') {
return error.params.allowedValues.join(', ');
}
Iif (error.keyword === 'pattern') {
return error.params.pattern;
}
Eif (error.keyword === 'minLength') {
return `at least ${error.params.limit} characters`;
}
if (error.keyword === 'maxLength') {
return `at most ${error.params.limit} characters`;
}
if (error.keyword === 'minimum') {
return error.params.limit;
}
if (error.keyword === 'maximum') {
return error.params.limit;
}
return error.params?.allowedValues || error.params?.type || 'valid value';
}
/**
* Format the actual value for error messages
*/
function formatActualValue(error) {
Iif (error.data === undefined || error.data === null) {
return error.keyword === 'required' ? 'missing' : String(error.data);
}
Iif (typeof error.data === 'object') {
return JSON.stringify(error.data);
}
return String(error.data);
}
/**
* Validate a rosetta.yaml file directly
* @param {string} filePath - Path to the rosetta.yaml file
* @returns {Promise<Object>} Validation result
*/
export async function validateYAMLFile(filePath) {
try {
const yaml = await fs.readFile(filePath, 'utf8');
// Import yaml parser
const { parse } = await import('js-yaml');
const yamlObject = parse(yaml);
return validateYAML(yamlObject);
} catch (error) {
if (error.name === 'YAMLException') {
return {
valid: false,
errors: [{
path: '(parse)',
property: 'parse',
message: `YAML parsing error: ${error.message}`,
keyword: 'parse'
}]
};
}
return {
valid: false,
errors: [{
path: '(file)',
property: 'file',
message: error.message,
keyword: 'file'
}]
};
}
}
/**
* Format validation errors as a readable string
* @param {Array} errors - Array of error objects from validateYAML
* @returns {string} Formatted error message
*/
export function formatValidationErrors(errors) {
if (!errors || errors.length === 0) {
return 'No errors';
}
const lines = errors.map((err, idx) => {
const location = err.path === '(root)' ? 'root' : err.path;
return ` ${idx + 1}. [${err.keyword}] ${location}\n ${err.message}`;
});
return `Validation errors:\n${lines.join('\n')}`;
}
/**
* Check if a YAML object has required top-level fields
* Quick check before full schema validation
* @param {Object} yamlObject - The parsed YAML object
* @returns {Object} Result with valid flag and missing fields
*/
export function checkRequiredFields(yamlObject) {
const required = ['schema_version', 'project', 'stack'];
const missing = [];
for (const field of required) {
if (!yamlObject || !yamlObject[field]) {
missing.push(field);
}
}
return {
valid: missing.length === 0,
missing
};
}
// Export the schema for use in generators
export { schema };
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