All files oven.js

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const debug = require('debug')('SimpleZSTDOven');
 
class Oven {
  #poolOptions;
 
  #queue;
 
  #factory;
 
  #destroy;
 
  constructor(poolOptions, factory, destroy) {
    this.#poolOptions = poolOptions;
    this.#queue = [];
    this.#factory = factory;
    this.#destroy = destroy;
 
    for (let i = 0; i < poolOptions.targetSize; i += 1) {
      this.#createResource();
    }
  }
 
  async #createResource() {
    debug('createResource?');
    if (this.#queue.length > this.#poolOptions.targetSize) {
      debug('createResource call factory');
      this.#queue.push(this.#factory());
    }
  }
 
  async acquire() {
    debug('acquire');
    if (this.#queue.length === 0) {
      this.#createResource(); // async attempt to add another process
      debug('acquire from queue');
      return this.#queue.pop();
    }
    debug('acquire create on demand');
    return this.factory();
  }
 
  async destroy() {
    debug('destroy');
    while (this.#queue.length > 0) {
      this.#destroy(this.#queue.pop());
    }
  }
}
 
module.exports = Oven;