Allora Blockless Extension

Blockless Extensions

Blockless Extensions provide ways of extending the capabilities of plain WebAssembly code. In particular, CGI extensions allow nodes to execute logic written in non-WebAssembly languages. You can read more about them here (opens in a new tab).

Allora Blockless Extension

Allora Blockless Extension (opens in a new tab) provides additional functionality by allowing Nodes to execute Python scripts. This extension is installed on Allora Compute Node images and will execute a main.py script. The main.py script is searched for either in the current directory or the /app/runtime or /app/runtime/extensions paths.

A Blockless Function showcasing the use of this CGI extension can be found here (opens in a new tab). This function passes the arguments in the ALLORA_ARG_PARAMS environment variables to the main.py script as part of a JSON object in the "arguments" field. The Python script can read the JSON payload written to its standard input and read arbitrary data needed for execution.