Cloudify Script Plugin : Passing inputs as Environment Variables to scripts

Question

I am trying to pass blueprints inputs as environment variables to a python script (executed by script_plugin during one of the lifecycle operations of a node).

We are using Cloudify 3.1. My blueprint looks like below (trimmed it to show the required sections):

inputs:
  sql_server_username:
    type: string
    default: ''
    description: >
      Enter SQL Server User Name

node_templates:  
  my_install:
      type: my.nodes.Root
      relationships:
        - target: win2012r2
          type: cloudify.relationships. contained_in
      interfaces:
        cloudify.interfaces.lifecycle:
          start:
            implementation: scripts/my/installer.py
            inputs:
                process:
                    env:
                        SQL_USERNAME: { get_input: sql_server_username }

and in my python script (installer.py) I am trying to access SQL_USERNAME using os.environ.get("SQL_USERNAME", "DEFAULT"). But I am always getting the default value even when I pass a custom value via inputs during deploy,

What should I change to be able to access the input parameters as environment vairables (from the inputs section of the blueprint) in the script?

score 0 · Accepted Answer · answered Jan 14 '16 at 22:23

After spending almost 24 hours, found out that if the script is a python script and eval_script is not set to false in the Process configuration options, the environment variables are not injected (atleast for v 3.1).

Thanks to Dan Kilman. The snippet below is from Ref# https://groups.google.com/d/msg/cloudify-users/mEAI9x9ivXQ/39Rg6KgKP4cJ

They are indeed not exposed as environment variables but are readily available as inputs by placing them in the top level inputs instead of the nested env.process and then doing something like

from cloudify.state import ctx_parameters as inputs

afterward, you can access these like this

# inputs in this case is just a sugared dict that allows top level key attribute-like access to the operation inputs # you could just as well do inputs['LOAD_BALANCER_IP'] ``ctx.logger.info(inputs.LOAD_BALANCER_IP)

Wish this was explicitly stated in the docs ..

Cloudify Script Plugin : Passing inputs as Environment Variables to scripts

1 Answers1