kibana-123/src/cli_plugin/install/progress.js

Kibana is an open source (Apache Licensed), browser based analytics and search dashboard for Elasticsearch. Kibana is a snap to setup and start using. Kibana strives to be easy to get started with, while also being flexible and powerful, just like Elastic

/**
 * Generates file transfer progress messages
 */
export default class Progress {

  constructor(logger) {
    const self = this;

    self.dotCount = 0;
    self.runningTotal = 0;
    self.totalSize = 0;
    self.logger = logger;
  }

  init(size) {
    this.totalSize = size;
    const totalDesc = this.totalSize || 'unknown number of';

    this.logger.log(`Transferring ${totalDesc} bytes`, true);
  }

  progress(size) {
    if (!this.totalSize) return;

    this.runningTotal += size;
    let newDotCount = Math.round(this.runningTotal / this.totalSize * 100 / 5);
    if (newDotCount > 20) newDotCount = 20;
    for (let i = 0; i < (newDotCount - this.dotCount); i++) {
      this.logger.log('.', true);
    }
    this.dotCount = newDotCount;
  }

  complete() {
    this.logger.log(`Transfer complete`, false);
  }

}