oa-jira/src/cache/classes/resource.cache.class.js

Octet Agile's JIRA connectivity project.

const commons = require('../../commons');
const utils = require('../utils/cache.utils');

class ResourceCache {
  #name;
  #class;
  #known;
  #max;

  constructor(name, _class, max) {
    this.#name = name;
    this.#class = _class;
    this.#max = max;
    this.reset();
  }

  getSize = () => Object.values(this.#known).length;
  has = id => this.#known.hasOwnProperty(id);
  get = id => Promise.resolve(this.#known[id]);
  set = (id, resource) => {
    return Promise.all([utils.resolveId(id), utils.resolveResource(resource, this.#class, this.#name)])
      .then(([id, resource]) => {
        if (this.getSize() >= this.#max) return commons.errors.too.big.reject(`${this.#name} cache`, this.#max);
        this.#known[id] = resource;
        return Promise.resolve(resource);
      })
      .catch(error => Promise.reject(error));
  };
  reset = () => {
    this.#known = {};
    return this;
  };
}

module.exports = ResourceCache;