Nextline-web

The front-end web app of Nextline.

Nextline is a DAQ sequencer of the Observatory Control System (OCS). Nextline allows line-by-line execution of concurrent Python scripts, which control telescopes, by multiple users simultaneously from web browsers.

How to run the Nextline front-end web app

The section shows how to run the Nextline front-end web app. To start, you need to know the URL of the back-end API server.

As a Docker container

Docker images of the Nextline front-end web app are created as ghcr.io/simonsobs/nextline-web.

Environment variables in the container

You can configure the web app in the container with these variables.

Environment variable	Default value	Description
`PUBLIC_PATH`	`/`	Path in the URL of the web app
`API_HTTP`	`http://localhost:8000`	URL of the GraphQL API server
`API_NAME`	`localhost`	Text to be shown as part of the title

For example, if you are to run the web app at the port 8080 with the path /nextline/ and use the GraphQL API server at http://localhost:5000/graphql as the name API 1, you can do so with the following command.

docker run -p 8080:80 -e PUBLIC_PATH=/nextline/ -e API_HTTP=http://localhost:5000/-e API_NAME="API 1" graphql ghcr.io/simonsobs/nextline-web

If you are on the localhost, the web app is running at http://localhost:8080/nextline/.