Working with Golem Promises in Go

Golem promises provide a way for Golem workers to wait on an external condition. The worker creates the promise and somehow sends its identifier to the external system responsible for completing the promise. Then the worker can await the promise, being suspended until the external system completes the promise using Golem's REST API.

It is also possible to complete a promise from within a Golem worker using the Golem SDK.

When a promise is completed, an arbitrary byte array can be attached to it as a payload - this data is returned to the awaiting worker when is continues execution.