kibana-123/src/server/plugins/plugin_init.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

import { includes } from 'lodash';

export default async (plugins) => {
  let path = [];

  const initialize = async function (id, fn) {
    let plugin = plugins.byId[id];

    if (includes(path, id)) {
      throw new Error(`circular dependencies found: "${path.concat(id).join(' -> ')}"`);
    }

    path.push(id);

    for (let reqId of plugin.requiredIds) {
      if (!plugins.byId[reqId]) {
        throw new Error(`Unmet requirement "${reqId}" for plugin "${id}"`);
      }

      await initialize(reqId, fn);
    }

    await plugin[fn]();
    path.pop();
  };

  const collection = plugins.toArray();
  for (let {id} of collection) {
    await initialize(id, 'preInit');
  }

  for (let {id} of collection) {
    await initialize(id, 'init');
  }
};