hello.py

#
#
# main() will be run when you invoke this action
#
# @param Cloud Functions actions accept a single parameter, which must be a JSON object.
#
# @return The output of this action, which must be a JSON object.
#
#
import sys

def main(dict):
    if 'name' in dict:
        return { 'message': 'Hello ' + dict['name'] }
    else:
        return { 'message': 'Hello world' }

index-async.js

function main(params) {
    return new Promise((resolve, reject) => {
        // long running operation
        console.log('params start');
        console.log(params);
        console.log('params end');
        if (params && params.name) {
            console.log(`hello ${params.name}`);
            resolve({ msg: `hello ${params.name}` });
        } else {
            console.log('hello world');
            reject({ msg: 'hello world' });
        }
    })
}

index.js

function main(params) {
    if(params && params.name) {
        console.log(`hello ${params.name}`);
        return {msg: `hello ${params.name}`};
    } else {
        console.log('hello world');
        return {msg: 'hello world'};
    }
}

Commands

1. ibmcloud fn action create helloworldcfe index.js
2. ibmcloud fn action invoke helloworldcfe
3. ibmcloud fn activation get {activation id from 2}

Promise version

❯ ibmcloud fn action update helloworldcfe index.js
❯ ibmcloud fn action update helloworldcfe index.js
ok: updated action helloworldcfe
❯ ibmcloud fn action invoke helloworldcfe -r
{
    "error": {
        "msg": "hello world"
    }
}
❯ ibmcloud fn action invoke helloworldcfe -r -p name "upkar lidder"
{
    "msg": "hello upkar lidder"
}