jenkins-monitor/lib/jenkins.js

Monitor Jenkins Status

'use strict';

const jsonist = require('jsonist');

function rnd(d) {
  return Math.round(d * 100) / 100;
}

function disk(c) {
  const key = 'hudson.node_monitors.DiskSpaceMonitor';
  return c.monitorData[key]
    && c.monitorData[key].size
    && rnd(c.monitorData[key].size / 1014 / 1024 / 1024);
}

function temp(c) {
  const key = 'hudson.node_monitors.TemporarySpaceMonitor';
  return c.monitorData[key]
    && c.monitorData[key].size
    && rnd(c.monitorData[key].size / 1014 / 1024 / 1024);
}

module.exports.getComputers = function jenkinsGetComputers(cb) {
  const url = `${process.env.JENKINS_URL}/computer/api/json`;
  const opts = {
    auth: `${process.env.JENKINS_USER}:${process.env.JENKINS_AUTH}`,
  };

  jsonist.get(url, opts, (err, data) => {
    if (err) { return cb(err); }

    // @TODO we should probably check res.statusCode

    return cb(null, data.computer.map(c => ({
      permanentlyOffline: c.offline,
      temporarilyOffline: c.temporarilyOffline,
      offline: !!(c.offline || c.temporarilyOffline) + 0,
      reason: c.offlineCauseReason,
      name: c.displayName,
      idle: c.idle,
      disk: `${disk(c) || '?'} G`,
      temp: `${temp(c) || '?'} G`,
    })));
  });
};

module.exports.summary = function jenkinsSummary(nodes) {
  const offline = nodes.reduce((cnt, node) => cnt + (node.offline ? 1 : 0), 0);
  const online = nodes.length - offline;

  const summary = [];

  if (offline > 0) {
    const node = offline === 1 ? 'node is' : 'nodes are';

    summary.push(`${offline} Jenkins ${node} offline`);
  }

  if (online > 0) {
    const where = offline === 0 ? ' Jenkins' : '';
    const node = online === 1 ? 'node is' : 'nodes are';

    summary.push(`${online}${where} ${node} online`);
  }

  return `${summary.join(', and ')}.`;
};

module.exports.getOffline = function jenkinsGetOffline(cb) {
  module.exports.getComputers((err, computers) => {
    if (err) { return cb(err); }

    return cb(null, computers.filter(c => c.offline === 1));
  });
};