egg/lib/core/base_context_class.js

'use strict';

const BaseContextLogger = require('./base_context_logger');

const LOGGER = Symbol('BaseContextClass#logger');

/**
 * BaseContextClass is a base class that can be extended,
 * it's instantiated in context level,
 * {@link Helper}, {@link Service} is extending it.
 */
class BaseContextClass {

  /**
   * @constructor
   * @param {Context} ctx - context instance
   * @since 1.0.0
   */
  constructor(ctx) {
    /**
     * @member {Context} BaseContextClass#ctx
     * @since 1.0.0
     */
    this.ctx = ctx;
    /**
     * @member {Application} BaseContextClass#app
     * @since 1.0.0
     */
    this.app = ctx.app;
    /**
     * @member {Config} BaseContextClass#config
     * @since 1.0.0
     */
    this.config = ctx.app.config;
    /**
     * @member {Service} BaseContextClass#service
     * @since 1.0.0
     */
    this.service = ctx.service;
  }

  get logger() {
    if (!this[LOGGER]) this[LOGGER] = new BaseContextLogger(this.ctx, this.pathName);
    return this[LOGGER];
  }
}

module.exports = BaseContextClass;