chapter4

Code samples for Chapter 4 Data processing with NodeRED

Scripts

• Launch NodeRED with a blank workspace:

$ npm start

• Flows as of NodeRED project of Chapter 4:

$ npm run flow0

• Mid point for the chapter (all the logic deployed):

$ npm run flow1

• End result for the chapter (all the logic deployed & organized in a pipeline):

$ npm run flow2

Run a custom instance

$ export PORT=1889
$ export FLOW=flow0.json
$ npm run custom

• If PORT is not specified, 2880 will be the default (to avoid crashing with NodeRED standard 1880)
• If FLOW is not specified, flow2.json is the default

NOTES

1. You have to include the Pusher credentials of your own account and app in pusher out and pusher in nodes

2. Installation of packages from the NodeRED editor puts the new packages in the user data folder, i.e. ./data. Hence they are not added to the NodeRED main package.json in the ./app folder.