This is a set of examples for the (unofficial) Haskell SDK.

This repository provides code used for exercises and demonstrations included in the Haskell adaptation of the Temporal 101 and Temporal 102 training courses.

• Temporal 101
• Temporal 102
  • Hands-On Exercises
    • Exercise 1 - Observing Durable Execution
    • Exercise 2 - Testing the Translation Workflow
    • Exercise 3 - Debugging and Fixing an Activity Failure
  • Examples for Self-Study
    • Age Estimation

Most examples assume a Nix development shell and running Temporal development server; see the usage section below for details.

• hello - basic examples
  • activity - define an activity and execute it from a workflow
  • activity_with_boilerplate - same as above, without using Template Haskell convenience utilities
  • child_workflow - execute a workflow that spawns a child workflow
  • cron - execute a workflow once per minute

This cookbook depends on Nix; if you don't already have Nix installed, please follow these instructions to do so.

Unless otherwise specified, all examples require a running Temporal development server; drop into a Nix development shell and spawn one:

$ nix develop --accept-flake-config
$ temporal server start-dev

The development server web UI should now be available at localhost:8233.

Separately, drop into a Nix development shell from which the examples may be compiled and executed; to run the basic activity example:

$ nix develop --accept-flake-config
$ cabal run hello:activity_with_boilerplate

Upon completion, navigate to the web UI and observe that a workflow of type greeting has completed: