@confluentinc/schemaregistry/dist/rules/jsonata/jsonata-executor.js

Node.js client for Confluent Schema Registry

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.JsonataExecutor = void 0;
const rule_registry_1 = require("../../serde/rule-registry");
const lru_cache_1 = require("lru-cache");
const jsonata_1 = __importDefault(require("jsonata"));
class JsonataExecutor {
    constructor() {
        this.config = null;
        this.cache = new lru_cache_1.LRUCache({ max: 1000 });
    }
    /**
     * Register the JSONata rule executor with the rule registry.
     */
    static register() {
        const executor = new JsonataExecutor();
        rule_registry_1.RuleRegistry.registerRuleExecutor(executor);
        return executor;
    }
    configure(clientConfig, config) {
        this.config = config;
    }
    type() {
        return "JSONATA";
    }
    async transform(ctx, msg) {
        let expr = ctx.rule.expr;
        if (expr == null) {
            return msg;
        }
        let jsonataExpr = this.cache.get(expr);
        if (jsonataExpr == null) {
            jsonataExpr = (0, jsonata_1.default)(expr);
            this.cache.set(expr, jsonataExpr);
        }
        return jsonataExpr.evaluate(msg);
    }
    async close() {
    }
}
exports.JsonataExecutor = JsonataExecutor;