JavaFBP runtime

Implementation of the FBP runtime protocol, allowing to create JavaFBP with Flowhub and other compatible clients.

Status

Proof-of-concept. Can be used to create simple programs live with Flowhub and run them.

TODO

In roughly prioritized order.

Milestone 0.1: minimally useful

• Fix network excecution blocking main thread, should execute in background
• Add proper commandline arguments for port, library path, runtime registry etc
• Implement support for multiple graphs
• Implement stopping of networks
• Implement redirection of stdout/stderr, for showing in IDE
• Implement introspection of data passing through edges

Later

• Implement support for arrayports
• Implement support for subgraph components
• Implement support for component specific icons
• Implement component:getsource, for showing component .java code in IDE
• Implement component:setsource, for creating components from .java code in IDE
• Implement debug mode, catching exceptions and notifying IDE where they happen
• Implement remote subgraph support, allowing a JavaFBP program/runtime to be used as a component

Building from git

cd runtime
gradle installApp

Run & Connect to Flowhub

Note: instructions only tested on GNU/Linux

Open Flowhub, log in. Click "Register runtime" and copy your user UUID.

export FLOWHUB_USER_ID=MY-USER-UUID-XXX
./build/install/runtime/bin/runtime

The runtime should now register itself and listen on a port for UI to connect.

Go back to Flowhub, hit the refresh icon next to "Register runtime".

Create a new project, select JavaFBP as the runtime type. You should now be connected and be able to build JavaFBP programs!