@glandjs/core/injector/discovery-service.js

Glands is a web framework for Node.js (@core)

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.DiscoveryService = void 0;
const toolkit_1 = require("@medishn/toolkit");
class DiscoveryService {
    constructor(modulesContainer, logger) {
        this.modulesContainer = modulesContainer;
        this.logger = logger?.child('Discovery');
    }
    getByMetadata(metadataKey, metadataValue, selector, type) {
        const items = [];
        for (const [moduleName, moduleRef] of this.modulesContainer.entries()) {
            const wrappers = selector(moduleRef);
            this.logger?.debug(`Scanning module: ${moduleName} for ${type}s`);
            for (const [token, wrapper] of wrappers.entries()) {
                const meta = Reflect.getMetadata(metadataKey, wrapper.token);
                if ((0, toolkit_1.isUndefined)(meta)) {
                    this.logger?.debug(` - Skipped ${type} (no ${metadataKey})`);
                    continue;
                }
                if (!(0, toolkit_1.isUndefined)(metadataValue) && meta !== metadataValue) {
                    this.logger?.debug(` - Skipped ${type} (metadata mismatch: expected "${metadataValue}", got "${meta}")`);
                    continue;
                }
                this.logger?.debug(` - Matched ${type} with metadata "${meta}"`);
                items.push(wrapper);
            }
        }
        this.logger?.debug(`Found ${items.length} ${type}(s) matching criteria.`);
        this.logger?.debug(`- Done.`);
        return items;
    }
    getControllers(metadataKey, metadataValue) {
        return this.getByMetadata(metadataKey, metadataValue, (m) => m.controllers, 'controller');
    }
    getChannels(metadataKey, metadataValue) {
        return this.getByMetadata(metadataKey, metadataValue, (m) => m.channels, 'channel');
    }
}
exports.DiscoveryService = DiscoveryService;