Created
January 29, 2016 22:11
-
-
Save mschultheiss83/85058f5d48b989901c6a to your computer and use it in GitHub Desktop.
a middleware file for restify to use knex as database connection
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| /** | |
| * Created by m.schultheiss on 29.01.2016. | |
| * References: | |
| * - http://restify.com/ | |
| * - http://knexjs.org/ | |
| * Helpers: | |
| * - https://github.com/trentm/node-bunyan | |
| * - https://lodash.com | |
| */ | |
| var knex = require("knex"), | |
| dbManager = require("../../config/databases"), | |
| _ = require("lodash"); | |
| function closeKnex(option) { | |
| //try to knex.destroy | |
| option.knex && option.knex.destroy && option.knex.destroy(function onDestroy() { | |
| // on success log closed connection | |
| if (option.log && option.log.info) { | |
| option.log.info({ | |
| "note": "DB connection closed", | |
| "origin": "mcp-database", | |
| "customer": option.customer, | |
| "dbConfig": option.dbConfig, | |
| "event": "closeConnection" | |
| }); | |
| } else { | |
| console.log("DB connection closed", { | |
| "customer": option.customer, | |
| "dbConfig": option.dbConfig | |
| }) | |
| } | |
| }); | |
| } | |
| exports = function(req, res, next) { | |
| // load config via header | |
| req.dbConfig = dbManager.findCustomerDB(req.headers["x-api-customers"] || req.params.customers); | |
| // set req.knex for later usage | |
| req.knex = knex(req.dbConfig); | |
| //create transport object | |
| var option = { | |
| "customer": req.headers["x-api-customers"] || req.params.customers, | |
| "dbConfig": req.dbConfig, | |
| "knex": req.knex | |
| }; | |
| // dumping dbConfig as openConnection event, @see http://restify.com/#audit-logging | |
| req.log.info(_.merge(option, { | |
| "event": "openConnection" | |
| }), "db connection opened"); | |
| // close connection once response is send | |
| res.once("finish", closeKnex.bind(this, _.merge(option, { | |
| "log": req.log | |
| }))); | |
| // call to run next route | |
| next(); | |
| }; |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment