riff Sample: Node Square

A sample JavaScript function that multiplies a number by itself, returning the squared value.

Deployment

1. Install riff.

   These instructions assume riff v0.2.0 or later. See riff's Getting Started guide. Skip if you already have riff running.

2. Create the function.

   This assumes that the default namespace was initialized with credentials for your DOCKER_ID on Docker Hub.

   riff function create square \
   --git-repo https://github.com/projectriff-samples/node-square  \
   --artifact square.js \
   --image $DOCKER_ID/square \
   --verbose

3. Invoke the function.

   riff service invoke square --json -- -w '\n' -d 7

   Result:

   curl http://localhost:31380/ -H 'Host: square.default.example.com' -H 'Content-Type: application/json' -w '\n' -d 7
   49

   Change the number 7 to another number to see its square.