@aradox/multi-orm
Version:
Type-safe ORM with multi-datasource support, row-level security, and Prisma-like API for PostgreSQL, SQL Server, and HTTP APIs
179 lines • 6.64 kB
JavaScript
;
/**
* Computed Field Executor
*
* Loads and executes computed field resolvers defined in the schema.
* Supports both synchronous and asynchronous resolvers with timeout control.
*/
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
var desc = Object.getOwnPropertyDescriptor(m, k);
if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
desc = { enumerable: true, get: function() { return m[k]; } };
}
Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || (function () {
var ownKeys = function(o) {
ownKeys = Object.getOwnPropertyNames || function (o) {
var ar = [];
for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k;
return ar;
};
return ownKeys(o);
};
return function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k = ownKeys(mod), i = 0; i < k.length; i++) if (k[i] !== "default") __createBinding(result, mod, k[i]);
__setModuleDefault(result, mod);
return result;
};
})();
Object.defineProperty(exports, "__esModule", { value: true });
exports.ComputedExecutor = void 0;
const path = __importStar(require("path"));
const logger_1 = require("../utils/logger");
class ComputedExecutor {
resolverCache = new Map();
options;
constructor(options) {
this.options = {
basePath: options.basePath,
timeout: options.timeout ?? 5000,
throwOnTimeout: options.throwOnTimeout ?? false,
cacheResolvers: options.cacheResolvers ?? true
};
}
/**
* Execute computed fields on a set of rows
*/
async executeComputedFields(rows, model, fields, select) {
if (!rows || rows.length === 0) {
return rows;
}
// Find computed fields that need to be executed
const computedFields = Object.entries(fields).filter(([name, field]) => {
// Only execute if field has computed config
if (!field.computed)
return false;
// If select is specified, only execute selected computed fields
if (select && !select[name])
return false;
return true;
});
if (computedFields.length === 0) {
return rows;
}
logger_1.logger.debug('runtime', `Executing ${computedFields.length} computed field(s) for model ${model}`);
// Execute computed fields for each row
const results = await Promise.all(rows.map(row => this.executeForRow(row, model, computedFields)));
return results;
}
/**
* Execute computed fields for a single row
*/
async executeForRow(row, model, computedFields) {
const result = { ...row };
for (const [fieldName, field] of computedFields) {
try {
const value = await this.executeField(row, model, fieldName, field);
result[fieldName] = value;
}
catch (error) {
const err = error;
logger_1.logger.error('runtime', `Error executing computed field ${model}.${fieldName}: ${err.message}`);
if (this.options.throwOnTimeout && err.message.includes('timeout')) {
throw error;
}
// Set to undefined on error
result[fieldName] = undefined;
}
}
return result;
}
/**
* Execute a single computed field
*/
async executeField(row, model, fieldName, field) {
const computed = field.computed;
// Load resolver function
const resolver = await this.loadResolver(computed.resolver);
// Build context
const context = {
row,
model
};
// Execute resolver
if (computed.async) {
// Async resolver with timeout
const timeout = computed.timeout ?? this.options.timeout;
return this.executeWithTimeout(resolver, context, timeout);
}
else {
// Synchronous resolver
return resolver(context);
}
}
/**
* Load a resolver function from file path
*/
async loadResolver(resolverPath) {
// Check cache
if (this.options.cacheResolvers && this.resolverCache.has(resolverPath)) {
return this.resolverCache.get(resolverPath);
}
// Resolve absolute path
const absolutePath = path.isAbsolute(resolverPath)
? resolverPath
: path.resolve(this.options.basePath, resolverPath);
logger_1.logger.debug('runtime', `Loading computed resolver: ${absolutePath}`);
try {
// Dynamic import
const module = await Promise.resolve(`${absolutePath}`).then(s => __importStar(require(s)));
const resolver = module.default || module;
if (typeof resolver !== 'function') {
throw new Error(`Resolver at ${resolverPath} must export a function`);
}
// Cache resolver
if (this.options.cacheResolvers) {
this.resolverCache.set(resolverPath, resolver);
}
return resolver;
}
catch (error) {
const err = error;
logger_1.logger.error('runtime', `Failed to load resolver ${resolverPath}: ${err.message}`);
throw new Error(`Failed to load computed field resolver: ${resolverPath}`);
}
}
/**
* Execute resolver with timeout
*/
async executeWithTimeout(resolver, context, timeout) {
return Promise.race([
resolver(context),
new Promise((_, reject) => {
setTimeout(() => {
reject(new Error(`Computed field ${context.model} timed out after ${timeout}ms`));
}, timeout);
})
]);
}
/**
* Clear resolver cache
*/
clearCache() {
this.resolverCache.clear();
}
}
exports.ComputedExecutor = ComputedExecutor;
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