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a000a93dc6
* `src/node/server.js` can now be run as a script (for normal
operation) or imported as a module (for tests).
* Move shutdown actions to `src/node/server.js` to be close to the
startup actions.
* Put startup and shutdown in functions so that tests can call them.
* Use `await` instead of callbacks.
* Block until the HTTP server is listening to avoid races during
test startup.
* Add a new `shutdown` hook.
* Use the `shutdown` hook to:
* close the HTTP server
* call `end()` on the stats collection to cancel its timers
* call `terminate()` on the Threads.Pool to stop the workers
* Exit with exit code 0 (instead of 1) on SIGTERM.
* Export the HTTP server so that tests can get the HTTP server's
port via `server.address().port` when `settings.port` is 0.
78 lines
2.4 KiB
JavaScript
78 lines
2.4 KiB
JavaScript
/**
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* The DB Module provides a database initalized with the settings
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* provided by the settings module
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*/
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/*
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* 2011 Peter 'Pita' Martischka (Primary Technology Ltd)
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS-IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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var ueberDB = require("ueberdb2");
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var settings = require("../utils/Settings");
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var log4js = require('log4js');
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const util = require("util");
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// set database settings
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let db = new ueberDB.database(settings.dbType, settings.dbSettings, null, log4js.getLogger("ueberDB"));
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/**
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* The UeberDB Object that provides the database functions
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*/
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exports.db = null;
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/**
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* Initalizes the database with the settings provided by the settings module
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* @param {Function} callback
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*/
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exports.init = function() {
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// initalize the database async
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return new Promise((resolve, reject) => {
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db.init(function(err) {
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if (err) {
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// there was an error while initializing the database, output it and stop
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console.error("ERROR: Problem while initalizing the database");
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console.error(err.stack ? err.stack : err);
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process.exit(1);
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}
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// everything ok, set up Promise-based methods
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['get', 'set', 'findKeys', 'getSub', 'setSub', 'remove', 'doShutdown'].forEach(fn => {
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exports[fn] = util.promisify(db[fn].bind(db));
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});
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// set up wrappers for get and getSub that can't return "undefined"
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let get = exports.get;
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exports.get = async function(key) {
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let result = await get(key);
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return (result === undefined) ? null : result;
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};
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let getSub = exports.getSub;
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exports.getSub = async function(key, sub) {
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let result = await getSub(key, sub);
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return (result === undefined) ? null : result;
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};
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// exposed for those callers that need the underlying raw API
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exports.db = db;
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resolve();
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});
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});
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}
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exports.shutdown = async (hookName, context) => {
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await exports.doShutdown();
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console.log('Database closed');
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};
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