Cadence Samples

These are some samples to demostrate various capabilities of Cadence client and server. You can learn more about cadence at:

• Cadence: https://github.com/uber/cadence
• Cadence Client: https://github.com/uber-go/cadence-client

Prerequisite

Run Cadence Server

See instructions for running the Cadence Server: https://github.com/uber/cadence/blob/master/README.md

See instructions for using CLI to register a domain(name as "samples-domain"): https://cadenceworkflow.io/docs/08_cli or https://github.com/uber/cadence/blob/master/tools/cli/README.md

Steps to run samples

Add NodeJS server URL to Go file

The Cadence workflow needs to know where it can find the NodeJS server. I highly recommend setting up a simple SSH tunnel, but the default NodeJS address is

http://localhost:4001

Once you know the address you want to use, you'll need to change cmd/samples/recipes/pizzaactivity/pizza_activity_workflow.go:

line 174

// REPLACE ME WITH YOUR NodeJS server endpoint$
var baseUrl = "https://d0c3003f.ngrok.io"

Build Samples

make

Run Pizza Sample

Start workers for pizzaactivity workflow and activities

./bin/pizzaactivity -m worker

Start NodeJS server

Note you must have the following environment variables defined to run the server

If you need a Pusher account, it's free so do so here

PUSHER_APP_ID
PUSHER_KEY
PUSHER_SECRET
PUSHER_CLUSTER

Assuming those are in your environment, run:

cd pizza-backend
npm install
npm build-ts
sudo npm run watch-node

sudo is required to run the NodeJS process because it execs out to Docker. If your docker isn't installed as root, omit sudo

Start the React frontend

Note you must have the following environment variables defined to run the frontend

REACT_APP_PUSHER_ID
REACT_APP_PUSHER_CLUSTER

Assuming those are in your environment, run:

cd pizza-frontend
npm install
npm start

Use the Pizza tracker

There are two pages for the tracking system, 1 for the customer and 1 for the worker.

customer site

http://localhost:3000/order

worker site

http://localhost:3000/make