mirror of
https://github.com/coder/code-server.git
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119 lines
3.8 KiB
Markdown
119 lines
3.8 KiB
Markdown
# Contributing
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- [Detailed CI and build process docs](../ci)
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## Requirements
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Please refer to [VS Code's prerequisites](https://github.com/Microsoft/vscode/wiki/How-to-Contribute#prerequisites).
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Differences:
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- We require a minimum of node v12 but later versions should work.
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- We use [fnpm](https://github.com/goreleaser/nfpm) to build `.deb` and `.rpm` packages.
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- We use [jq](https://stedolan.github.io/jq/) to build code-server releases.
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- The [CI container](../ci/container/Dockerfile) is a useful reference for all our dependencies.
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## Development Workflow
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```shell
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yarn
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yarn vscode
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yarn watch
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# Visit http://localhost:8080 once the build completed.
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```
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To develop inside of an isolated docker container:
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```shell
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./ci/dev/container/exec.sh
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root@12345:/code-server# yarn
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root@12345:/code-server# yarn vscode
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root@12345:/code-server# yarn watch
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```
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Any changes made to the source will be live reloaded.
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If changes are made to the patch and you've built previously you must manually
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reset VS Code then run `yarn vscode:patch`.
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## Build
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```shell
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yarn
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yarn vscode
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yarn build
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yarn build:vscode
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yarn release
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cd release
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yarn --production
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# Runs the built JavaScript with Node.
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node .
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```
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Now you can build binary packages with:
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```
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yarn release:binary
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yarn test:binary-release
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yarn package
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# The binary release is in ./release-binary
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# .deb, .rpm and the binary archive are in ./release-packages
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```
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## Structure
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The `code-server` script serves an HTTP API to login and start a remote VS Code process.
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The CLI code is in [./src/node](./src/node) and the HTTP routes are implemented in
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[./src/node/app](./src/node/app).
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Most of the meaty parts are in our VS Code patch which is described next.
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### VS Code Patch
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Back in v1 of code-server, we had an extensive patch of VS Code that split the codebase
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into a frontend and server. The frontend consisted of all UI code and the server ran
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the extensions and exposed an API to the frontend for file access and everything else
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that the UI needed.
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This worked but eventually Microsoft added support to VS Code to run it in the web.
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They have open sourced the frontend but have kept the server closed source.
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So in interest of piggy backing off their work, v2 and beyond use the VS Code
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web frontend and fill in the server. This is contained in our
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[./ci/dev/vscode.patch](../ci/dev/vscode.patch) under the path `src/vs/server`.
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Other notable changes in our patch include:
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- Add our own build file which includes our code and VS Code's web code.
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- Allow multiple extension directories (both user and built-in).
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- Modify the loader, websocket, webview, service worker, and asset requests to
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use the URL of the page as a base (and TLS if necessary for the websocket).
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- Send client-side telemetry through the server.
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- Allow modification of the display language.
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- Make it possible for us to load code on the client.
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- Make extensions work in the browser.
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- Make it possible to install extensions of any kind.
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- Fix getting permanently disconnected when you sleep or hibernate for a while.
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- Add connection type to web socket query parameters.
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Some known issues presently:
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- Creating custom VS Code extensions and debugging them doesn't work.
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- Extension profiling and tips are currently disabled.
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As the web portion of VS Code matures, we'll be able to shrink and maybe even entirely
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eliminate our patch. In the meantime, however, upgrading the VS Code version requires
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ensuring that the patch still applies and has the intended effects.
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To generate a new patch run `yarn vscode:diff`.
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**note**: We have extension docs on the CI and build system at [./ci/README.md](../ci/README.md)
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If functionality doesn't depend on code from VS Code then it should be moved
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into code-server otherwise it should be in the patch.
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In the future we'd like to run VS Code unit tests against our builds to ensure features
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work as expected.
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