Binding an ElephantSQL's credentials to a Bluemix OpenWhisk action

shell.sh

# A simple action to prove it works
$ cat myaction.php
<?php
function main(array $args) : array
{
    return $args;
}
$ bx wsk action update myaction myaction.php

# Create the PostgreSQL database
$ bx service create elephantsql turtle mydatabase

# Create some credentials for the database
$ bx service key-create mydatabase openwhisk-creds

# Bind the credentials to the "myaction" action
$ bx wsk service bind elephantsql myaction --instance mydatabase --keyname openwhisk-creds

# Run the action to prove it works
$ bx wsk action invoke myaction -r
{
    "__bx_creds": {
        "elephantsql": {
            "credentials": "openwhisk-creds",
            "instance": "mydatabase",
            "max_conns": "5",
            "uri": "postgres://******:******@packy-01.db.elephantsql.com:5432/uhbbioqq"
        }
    }
}