Node GLSP Server

Node based server component for the Eclipse Graphical Language Platform (GLSP). The implementation of this server is aligned with the default Java based GLSP Server.

The server consists of three components:

• @eclipse-glsp/server-node The base framework for building node based GLSP servers
• @eclipse-glsp/graph The Typescript based implementation of the graphical model used in GLSP (GModel).
• @eclipse-glsp-examples/workflow-server GLSP example server using the workflow model.

Integration & Features

Currently the node-based API does not yet support the full feature set of the Java GLSP Server API. Below is a list of features that are currently supported.

Integration	Node Server	Java Server
JSON-RPC over Socket (Theia, VSCode)	✓	✓
JSON-RPC over Websocket (Standalone, Eclipse IDE)		✓

Feature	Node Server	Java Server
Model Saving	✓	✓
Model Dirty State		✓
Model SVG Export	✓	✓
Model Layout	✓	✓
Model Edit Modes - Edit - Read-only	✓	✓ ✓
Client View Port - Center - Fit to Screen	✓ ✓	✓ ✓
Client Status Notification	✓	✓
Client Message Notification	✓	✓
Element Selection	✓	✓
Element Hover	✓	✓
Element Validation	✓	✓
Element Navigation		✓
Element Type Hints	✓	✓
Element Creation and Deletion	✓	✓
Node Change Bounds - Move - Resize	✓ ✓	✓ ✓
Node Change Container	✓	✓
Edge Reconnect	✓	✓
Edge Routing Points	✓	✓
Element Text Editing	✓	✓
Clipboard (Cut, Copy, Paste)		✓
Undo / Redo		✓
Contexts - Context Menu - Command Palette - Tool Palette	✓ ✓	✓ ✓ ✓

Build

Install dependencies and build via

yarn

Only build via

yarn build

Lint packages via

yarn lint

or do all of the above via

yarn all

Testing

Unit tests

To execute all available test suits use:

yarn test

It's also possible to execute and debug a single test file in VSCode/Theia via the File explorer. Simply select a test file (*.spec.ts), then go to the Run & Debug View (Ctrl+Shift+D), select the 'Run current test" launch config and start debugging (Ctrl+F11)

Start & Debug

The example server can be launched with:

yarn start

To debug you can use the Debug workflow example GLSP Server launch configuration. This starts the example server in a dedicated process. To test the server you have to connect a workflow GLSP client that supports JSON-RPC via socket. We recommend to use the client provided by the glsp-integration.

More information

For more information, please visit the Eclipse GLSP Umbrella repository and the Eclipse GLSP Website. If you have questions, please raise them in the discussions and have a look at our communication and support options.