git.r.bdr.sh - rbdr/monitorcito/blob - lib/index.js

   1 const { promisify } = require('util');
   2 const { exec } = require('child_process');
   3
   4 const internals = {
   5   kActiveIndicator: 'active',
   6   kFieldSeparator: '\n',
   7   kKeyValueSeparator: '=',
   8   kBlockSeparator: '\n\n',
   9   statusCommand: 'systemctl show --no-page -p Id -p ActiveState',
  10
  11   formatStatusOutput(systemctlText) {
  12
  13     const blocks = systemctlText.trim().split(internals.kBlockSeparator);
  14     return blocks
  15       .map((block) => {
  16
  17         const fields = block.split(internals.kFieldSeparator);
  18         return fields.reduce((fieldObject, field) => {
  19
  20           const [key, value] = field.split(internals.kKeyValueSeparator);
  21           return {
  22             ...fieldObject,
  23             [key]: value
  24           }
  25         }, {})
  26
  27       })
  28       .reduce((statusObject, service) => {
  29
  30         return {
  31           ...statusObject,
  32           [service.Id]: service.ActiveState === internals.kActiveIndicator
  33         }
  34       }, {});
  35   },
  36
  37   exec: promisify(exec)
  38 };
  39
  40 module.exports = async (services) => {
  41
  42   const { stdout } = await internals.exec(`${internals.statusCommand} ${services.join(' ')}`);
  43   return internals.formatStatusOutput(stdout);
  44 };