temporalio-approval-flow

This is a quick demo of Temporal and a multiple user approval flow.

To test this demo locally, start by getting Temporal running using temporalio/docker-compose. I've forked the repo at danielhochman/docker-compose to use a database port for Postgres that doesn't conflict with the existing Clutch database port.

Commands

$ mkdir -p ~/go/src/github.com/danielhochman
$ cd ~/go/src/github.com/danielhochman
$ git clone git@github.com/danielhochman/docker-compose
$ git clone git@github.com/danielhochman/temporalio-approval-flow
$ cd docker-compose
$ docker-compose up -d
$ cd ..
$ cd temporalio-approval-flow
$ make worker-run

# In another window
$ cd ~/go/src/github.com/danielhochman/temporalio-approval-flow
$ make backend-run

# Stop docker processes
$ cd ~/go/src/github.com/danielhochman/docker-compose
$ docker-compose down

# Visit localhost:9000 for the application and localhost:8088 for the Temporal dashboard.

Concepts and Terminology (TODO)

• Workflow
• Activity
• Signal
• Selector

For more info on these concepts check out:

• Temporal docs
• temporalio/temporal-ecommerce
• temporalio/subscription-workflow-project-template-go
• temporalio/samples-go

TODO

• Implement basic approval flow with an additional notification activity.
• Expand approval business logic (handling locks).
• Write up details of the concepts demonstrated in this example.
• Write unit tests. Testability is very important since uses of interface{} throughout the Temporal SDK mean that the compiler won't catch a lot of issues.