From 0779d471c6ab983a634658d82ae8db023b596962 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ciro=20Santilli=20=E5=85=AD=E5=9B=9B=E4=BA=8B=E4=BB=B6=20?= =?UTF-8?q?=E6=B3=95=E8=BD=AE=E5=8A=9F?= Date: Fri, 19 Mar 2021 00:00:00 +0000 Subject: [PATCH] sequelize --- README.adoc | 2 +- rootfs_overlay/lkmc/nodejs/.nvmrc | 1 + rootfs_overlay/lkmc/nodejs/package-lock.json | 282 +++++++++++++++++++ rootfs_overlay/lkmc/nodejs/package.json | 17 ++ rootfs_overlay/lkmc/nodejs/sequelize.js | 99 +++++++ 5 files changed, 400 insertions(+), 1 deletion(-) create mode 100644 rootfs_overlay/lkmc/nodejs/.nvmrc create mode 100644 rootfs_overlay/lkmc/nodejs/package-lock.json create mode 100644 rootfs_overlay/lkmc/nodejs/package.json create mode 100755 rootfs_overlay/lkmc/nodejs/sequelize.js diff --git a/README.adoc b/README.adoc index 16ebbb5..e7fe407 100644 --- a/README.adoc +++ b/README.adoc @@ -19363,7 +19363,7 @@ The horrendous downsides of this are: https://gensim.org -https://bitbucket.org/gensim/gensim +Source at: https://github.com/gensim-project/gensim previously at: https://bitbucket.org/gensim/gensim MIT licensed <> simulator, so a bit like an MIT <>. diff --git a/rootfs_overlay/lkmc/nodejs/.nvmrc b/rootfs_overlay/lkmc/nodejs/.nvmrc new file mode 100644 index 0000000..158c006 --- /dev/null +++ b/rootfs_overlay/lkmc/nodejs/.nvmrc @@ -0,0 +1 @@ +v14.16.0 diff --git a/rootfs_overlay/lkmc/nodejs/package-lock.json b/rootfs_overlay/lkmc/nodejs/package-lock.json new file mode 100644 index 0000000..6bbd5c9 --- /dev/null +++ b/rootfs_overlay/lkmc/nodejs/package-lock.json @@ -0,0 +1,282 @@ +{ + "name": "lkmc-nodejs", + "version": "1.0.0", + "lockfileVersion": 1, + "requires": true, + "dependencies": { + "@types/node": { + "version": "14.14.35", + "resolved": "https://registry.npmjs.org/@types/node/-/node-14.14.35.tgz", + "integrity": "sha512-Lt+wj8NVPx0zUmUwumiVXapmaLUcAk3yPuHCFVXras9k5VT9TdhJqKqGVUQCD60OTMCl0qxJ57OiTL0Mic3Iag==" + }, + "any-promise": { + "version": "1.3.0", + "resolved": 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"^8.5.1", + "pg-hstore": "^2.3.3", + "sequelize": "^6.5.1" + }, + "devDependencies": {}, + "scripts": { + "test": "echo \"Error: no test specified\" && exit 1" + }, + "author": "", + "license": "GPLv3" +} diff --git a/rootfs_overlay/lkmc/nodejs/sequelize.js b/rootfs_overlay/lkmc/nodejs/sequelize.js new file mode 100755 index 0000000..277784a --- /dev/null +++ b/rootfs_overlay/lkmc/nodejs/sequelize.js @@ -0,0 +1,99 @@ +#!/usr/bin/env node + +// https://cirosantilli.com/sequelize +// +// Before running this: +// * ensure that you can use peer authentication without password +// from the command line, i.e. `psql` works +// * create the database for our test: +// `` +// createdb lkmc-nodejs +// `` + +const assert = require('assert'); + +const { Sequelize, DataTypes } = require('sequelize'); + +// To use the URI syntax, we need an explcit username and password. +// But the second constructor works with peer authentication. +// https://stackoverflow.com/questions/46207155/sequelize-and-peer-authentication-for-postgres +//const sequelize = new Sequelize('postgres://user:password@localhost:5432/lkmc-nodejs') +const sequelize = new Sequelize('lkmc-nodejs', undefined, undefined, { + host: '/var/run/postgresql', + dialect: 'postgres' +}); + +const IntegerNames = sequelize.define('IntegerNames', { + value: { + type: DataTypes.INTEGER, + allowNull: false + }, + name: { + type: DataTypes.STRING, + }, +}, {}); + +// OMG fuck this asynchronous bullshit: +// https://stackoverflow.com/questions/39928452/execute-sequelize-queries-synchronously/43250120 +(async () => { + +// Connection sanity check. +// https://stackoverflow.com/questions/19429152/check-mysql-connection-in-sequelize/31115934 +await sequelize.authenticate(); + +// Create the database defined by `sequelize.define`. +await IntegerNames.sync({force: true}) +// After this: +// +// psql lkmc-nodejs -c '\dt' +// +// gives: +// +// List of relations +// Schema | Name | Type | Owner +// --------+--------------+-------+------- +// public | IntegerNames | table | ciro +// (2 rows) +// +// and: +// +// psql lkmc-nodejs -c '\d+ "IntegerNames"' +// +// gives: +// +// Column | Type | Collation | Nullable | Default | Storage | Stats target | Description +// -----------+--------------------------+-----------+----------+--------------------------------------------+----------+--------------+------------- +// id | integer | | not null | nextval('"IntegerNames_id_seq"'::regclass) | plain | | +// value | integer | | not null | | plain | | +// name | character varying(255) | | | | extended | | +// createdAt | timestamp with time zone | | not null | | plain | | +// updatedAt | timestamp with time zone | | not null | | plain | | +// Indexes: +// "IntegerNames_pkey" PRIMARY KEY, btree (id) + +await IntegerNames.create({value: 2, name: 'two'}); +await IntegerNames.create({value: 3, name: 'three'}); +await IntegerNames.create({value: 5, name: 'five'}); +// psql lkmc-nodejs -c 'SELECT * FROM "IntegerNames";' +// +// gives: +// +// id | value | name | createdAt | updatedAt +// ----+-------+-------+----------------------------+---------------------------- +// 1 | 2 | two | 2021-03-19 19:12:08.436+00 | 2021-03-19 19:12:08.436+00 +// 2 | 3 | three | 2021-03-19 19:12:08.436+00 | 2021-03-19 19:12:08.436+00 +// 3 | 5 | five | 2021-03-19 19:12:08.437+00 | 2021-03-19 19:12:08.437+00 +// (3 rows) + +let integerNames = await IntegerNames.findAll({ + where: { + value: 2 + } +}); +assert(integerNames[0].name === 'two'); + +// Otherwise it hangs for 10 seconds, it seems that it keeps the connection alive. +// https://stackoverflow.com/questions/28253831/recreating-database-sequelizejs-is-slow +// https://github.com/sequelize/sequelize/issues/8468 +await sequelize.close(); +})();