royal-thing/install.js

A process that restarts the local registrant when needed

// Generated by CoffeeScript 2.4.1
(function() {
  var URL, debug, pkg;

  module.exports = async function(host, db) {
    var info, local_uri, save, update_seq;
    debug('Start', host);
    local_uri = new URL(`_local/royal-${host}`, db.uri + '/');
    save = async function(seq) {
      var doc;
      debug('save', {seq});
      doc = (await db.agent.get(local_uri).accept('json').then(function({body}) {
        return body;
      }).catch(function() {
        return {};
      }));
      if (seq == null) {
        return doc;
      }
      doc.update_seq = seq;
      return (await db.agent.put(local_uri).send(doc));
    };
    // On first run, retrieve the last `update_seq` and save it.
    ({update_seq} = (await save()));
    if (update_seq == null) {
      debug('install: save current update_seq');
      info = (await db.info());
      await save(info.update_seq);
    } else {
      debug('Re-using', {update_seq});
    }
    return {save};
  };

  ({URL} = require('url'));

  pkg = require('./package.json');

  debug = (require('debug'))(`${pkg.name}:install:trace`);

}).call(this);