Lagosta

Lagosta is the user interface for Krill.

The project uses Vue.js as Javascript framework and Element as UI framework.

Requirements

• Node.js
• yarn or npm

Note that yarn requires installing an extra dependency, whereas npm is included with node.js. OTOH if you use npm you should make sure to commit package-lock.json to the repository.

Project setup

To get all the required js libraries in, run

yarn install

or

npm install

Running a Development Server

Vue uses webpack and webpack-dev-server to run a auto-compiling, hot-reloadable development server and Krill is no exception.

You can start the development server by issuing:

npm run serve

Most of the settings for the development server are specified in the file /vue.config.js.

You can choose the IP Address and the port to run the Krill development server on:

    port: "3003",
    https: true

You can use the proxy setting for webpkack-dev-server to reroute the HTTP requests to your local Krill instance. Edit the /vue.config.js file by specifying the proxy option.

This will forward the requests for that particular endpoint to your local Krill instance. Note that you'll have the reroute the /api, /auth and /stats endpoints to Krill.

For example:

...
  devServer: {
    // Krill proxy instance (for API calls).
    // see: https://webpack.js.org/configuration/dev-server/#devserverproxy
    proxy: {
      "/api": { target: "https://localhost:3000" },
      "/auth": { target: "https://localhost:3000" },
      "/stats": { target: "https://localhost:3000" }
    },
...

In this example a local Krill instance is running on https://localhost:3000 (The default in the krill config).

You can read more about webpack-dev-server here.

Creating a build for deployment

To get everything compiled and minified in the /dist folder, you can run:

yarn run build

or

npm run build

This will compile and minify all JS and CSS. Again, since Vue uses webpack you can modify a lot of settings for the build process.

See the https://webpack.js.org/concepts/.

Routing API requests in Production

There are two ways to run the app in production:

• Configure your webserver to proxy all the calls for /api, /stats and /auth to the Krill daemon.
• Use the provided 'server.js' to spin up a simple HTTP server that proxies the API calls (NOT RECOMMENDED).

To use the latter, first create a .env file with the parameters that suit your environment

PROXY_BASE_URL=https://your-host
SERVE_FOLDER=dist

and then run

node server.js

Building in a Docker container

One-time only, build the Docker image locally:

docker build -t lagosta-builder .

Once you have that you can then do:

docker run -it --rm --name lagosta-builder -v ${PWD}:/tmp/src lagosta-builder /bin/bash
root@06a45bcc9a3e:/tmp/src# yarn install
root@06a45bcc9a3e:/tmp/src# exit

Now that your Docker image and local Lagosta build directory are ready, in future you can just run yarn build like so:

docker run -it --rm --name lagosta-builder -v ${PWD}:/tmp/src lagosta-builder /bin/bash
root@06a45bcc9a3e:/tmp/src# yarn build
...
 DONE  Build complete. The dist directory is ready to be deployed.
 INFO  Check out deployment instructions at https://cli.vuejs.org/guide/deployment.html
                                  
Done in 19.66s.

The output will be in the ${PWD}/dist folder in the host.