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Project Info

First of all, thank you everyone who made pull requests for Uptime Kuma, I never thought GitHub Community can be that nice! And also because of this, I also never thought other people actually read my code and edit my code. It is not structured and commented so well, lol. Sorry about that.

The project was created with vite.js (vue3). Then I created a subdirectory called "server" for server part. Both frontend and backend share the same package.json.

The frontend code build into "dist" directory. The server (express.js) exposes the "dist" directory as root of the endpoint. This is how production is working.

Key Technical Skills

Node.js (You should know what are promise, async/await and arrow function etc.)
Socket.io
SCSS
Vue.js
Bootstrap
SQLite

Directories

data (App data)
dist (Frontend build)
extra (Extra useful scripts)
public (Frontend resources for dev only)
server (Server source code)
src (Frontend source code)
test (unit test)

Can I create a pull request for Uptime Kuma?

⚠️ 2022-03-02 Update:

Since I found that merging pull requests is a pretty heavy task for me, I try to rearrange it.

✅ Accept:

Bug/Security fix
Translations
Adding notification providers

❌ Avoid:

Large pull requests
New big features

My long story here: https://www.reddit.com/r/UptimeKuma/comments/t1t6or/comment/hynyijx/

Recommended Pull Request Guideline

Fork the project
Clone your fork repo to local
Create a new branch
Create an empty commit git commit -m "[empty commit] pull request for <YOUR TASK NAME>" --allow-empty
Push to your fork repo
Create a pull request: https://github.com/louislam/uptime-kuma/compare
Write a proper description
Click "Change to draft"

❌ Won't Merge

Any breaking changes
Duplicated pull request
Buggy
Existing logic is completely modified or deleted
A function that is completely out of scope

Project Styles

I personally do not like something need to learn so much and need to config so much before you can finally start the app.

Easy to install for non-Docker users, no native build dependency is needed (at least for x86_64), no extra config, no extra effort to get it run
Single container for Docker users, no very complex docker-compose file. Just map the volume and expose the port, then good to go
Settings should be configurable in the frontend. Env var is not encouraged.
Easy to use

Coding Styles

4 spaces indentation
Follow .editorconfig
Follow ESLint

Name convention

Javascript/Typescript: camelCaseType
SQLite: underscore_type
CSS/SCSS: dash-type

Tools

Node.js >= 14
Git
IDE that supports ESLint and EditorConfig (I am using IntelliJ IDEA)
A SQLite tool (SQLite Expert Personal is suggested)

Install dependencies

npm ci

How to start the Backend Dev Server

(2021-09-23 Update)

npm run start-server-dev

It binds to 0.0.0.0:3001 by default.

Backend Details

It is mainly a socket.io app + express.js.

express.js is just used for serving the frontend built files (index.html, .js and .css etc.)

model/ (Object model, auto mapping to the database table name)
modules/ (Modified 3rd-party modules)
notification-providers/ (individual notification logic)
routers/ (Express Routers)
socket-handler (Socket.io Handlers)
server.js (Server main logic)

How to start the Frontend Dev Server

Set the env var NODE_ENV to "development".
Start the frontend dev server by the following command.
```
npm run dev
```
It binds to 0.0.0.0:3000 by default.

You can use Vue.js devtools Chrome extension for debugging.

Build the frontend

npm run build

Frontend Details

Uptime Kuma Frontend is a single page application (SPA). Most paths are handled by Vue Router.

The router is in src/router.js

As you can see, most data in frontend is stored in root level, even though you changed the current router to any other pages.

The data and socket logic are in src/mixins/socket.js.

Database Migration

Create patch-{name}.sql in ./db/
Add your patch filename in the patchList list in ./server/database.js

Unit Test

It is an end-to-end testing. It is using Jest and Puppeteer.

npm run build
npm test

By default, the Chromium window will be shown up during the test. Specifying HEADLESS_TEST=1 for terminal environments.

Update Dependencies

Install ncu https://github.com/raineorshine/npm-check-updates

ncu -u -t patch
npm install

Since previously updating Vite 2.5.10 to 2.6.0 broke the application completely, from now on, it should update patch release version only.

Patch release = the third digit (Semantic Versioning)

Translations

Please read: https://github.com/louislam/uptime-kuma/tree/master/src/languages

Wiki

Since there is no way to make a pull request to wiki's repo, I have set up another repo to do that.

https://github.com/louislam/uptime-kuma-wiki

Maintainer

Check the latest issues and pull requests: https://github.com/louislam/uptime-kuma/issues?q=sort%3Aupdated-desc

Release Procedures

Draft a release note
Make sure the repo is cleared
npm run update-version 1.X.X
npm run build
npm run build-docker
git push
Publish the release note as 1.X.X
npm run upload-artifacts with env vars VERSION=1.X.X;GITHUB_TOKEN=XXXX
SSH to demo site server and update to 1.X.X

Checking:

Check all tags is fine on https://hub.docker.com/r/louislam/uptime-kuma/tags
Try the Docker image with tag 1.X.X (Clean install / amd64 / arm64 / armv7)
Try clean installation with Node.js

Release Beta Procedures

Draft a release note, check "This is a pre-release"
Make sure the repo is cleared
npm run release-beta with env vars: VERSION and GITHUB_TOKEN
git push
Publish the release note as 1.X.X-beta.X
Press any key to continue

Release Wiki

Setup Repo

git clone https://github.com/louislam/uptime-kuma-wiki.git
cd uptime-kuma-wiki
git remote add production https://github.com/louislam/uptime-kuma.wiki.git

Push to Production Wiki

git pull
git push production master

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