support for command line environment variables

[SachinGhumbre]

We use inso generate command to generate kong configuration from openapi specifications. To achieve multiple environment deployments using the same openapi yaml file, there is a need to have environment variables to be passed at command line. Example given below:

my-orders.yaml
openapi: 3.0.0
tags:

• name: "orders.yml"
  info:
  title: "OrdersAPI" # service name in kong
  version: "1.0"
  servers:
  • url: https://{HOSTNAME}/api/v1.0/orders # full path for backend (service)
    variables:
    HOSTNAME:
    default: localhost:8443
    enum:
    - "QA-SERVER:8443"
    - "PROD-SERVER:8443"

When I run "inso generate config orders.yml --type declarative > kong.yaml", it will generate corresponding kong configuration file for orders API as mentioned below:

_format_version: "1.1"
services:

• name: OrdersAPI
  protocol: https
  host: localhost
  port: 8443
  path: /api/v1.0/orders
  plugins:
  • enabled: true
    tags:

If you notice, host value is taken from default value of HOSTNAME variable from orders.yml. What if I want to generate the kong configuration of orders API for PreProd or Prod ? It will not work as per current design.

So if we can have environment variable as key=value pair at command line then we can achieve multi env deployments.
For example :

inso generate config orders.yml --type declarative > kong.yaml ** --env-var HOSTNAME=PROD-SERVER:8443**

this should create kong.yaml as per below:

_format_version: "1.1"
services:

• name: OrdersAPI
  protocol: https
  host: PROD-SERVER
  port: 8443
  path: /api/v1.0/orders
  plugins:
  • enabled: true
    tags:

This change will indeed help in implementation of CICD.