Environment Variables

Environment Variables on Github

Direktiv allows to add environment variabels when using functions and services. In both cases the syntax is similar.

envs:
- name: MYVAR
  value: my-value
- name: MYOTHERVAR
  value: my-other-value

These values will be set when executing the user function. If those values change the service will be redeployed by Direktiv.

The following services is an example how to use environment variabels in namespace services.

Service With Environment Variables

direktiv_api: service/v1
image: gcr.io/direktiv/functions/bash:1.0
size: small
envs: 
- name: HELLO 
  value: world

Environment variabels can be used in flow functions as well. This flow is using a namespace service and a flow function with environment variables and adds the return of the functions to the final output of the flow.

Function with Environment Variables

direktiv_api: workflow/v1
functions:
- id: bash
  image: gcr.io/direktiv/functions/bash:1.0
  type: knative-workflow
  envs:
  - name: HELLO
    value: world
- id: bash-svc
  service: /envs-wf/svc.yaml
  type: knative-namespace

states:
- id: hello 
  type: action
  action:
    function: bash
    input: 
      commands:
      - command: bash -c "echo $HELLO"
  transition: hello-again
  transform:
    hello: 'jq(.return.bash[0].result)'
- id: hello-again
  type: action
  action:
    function: bash-svc
    input: 
      commands:
      - command: bash -c "echo $HELLO"
  transform:
    result: 'jq(. + { "hello-again": .return.bash[0].result } | del(.return))'