stratumn-cli/src/cli/metrics.js

CLI tools for Stratumn

import commander from 'commander';
import moment from 'moment';
import chalk from 'chalk';
import readPackageSync from '../utils/readPackageSync';
import get from '../utils/get';

function parseTime(str) {
  if (str.match(/^[0-9]{5,}$/)) {
    return parseInt(str, 10);
  }

  const val = moment(str).valueOf();

  if (isNaN(val)) {
    process.stderr.write('Invalid time\n', () => process.exit(1));
  }

  return val;
}

commander
  .version(readPackageSync('version'))
  .usage('<app-name>')
  .option('-f, --from <time>', 'from timestamp (milliseconds) or date', parseTime)
  .option('-t, --to <time>', 'to timestamp (milliseconds) or date', parseTime)
  .parse(process.argv);

if (commander.args.length !== 1) {
  commander.help();
}

function handleError(err) {
  process.stderr.write(err.message + '\n', () => process.exit(1));
}

function rpad(str, cols) {
  return str + new Array(Math.max(0, cols - str.length) + 1).join(' ');
}

const filters = [];

if (commander.from) {
  filters.push(['from', commander.from]);
}

if (commander.to) {
  filters.push(['to', commander.to]);
}

let queryString = '';

if (filters.length) {
  queryString = '?' + filters.map(filter => filter[0] + '=' + filter[1]);
}

get('/applications/' + commander.args[0] + '/metrics' + queryString, true)
  .then(metrics => {
    let content = '';

    content += rpad('OPERATIONS', 16) + rpad('FOSSILS', 16) + 'ERRORS\n';
    content += rpad(metrics.operationCount + '', 16);
    content += chalk.cyan(rpad(metrics.fossilCount + '', 16));
    content += chalk.red(metrics.errorCount) + '\n';

    process.stdout.write(content, process.exit);
  })
  .catch(err => {
    if (err.code === 'ENOENT') {
      process.stdout.write('You must login first\n', () => process.exit(1));
      return;
    }

    handleError(err);
  });