How to use environment variables in plugin?

[smeeklai]

I have this configuration

server:
  config:
    configManagementPlugins: |
      - name: helm-secrets
        generate:
          command: ["helm"]
          args: 
            - "secrets"
            - "template"
            - "--namespace"
            - "${APP_NAME}"
            - "-f"
            - "deployments/${APP_NAME}/${ENV}/values.yaml"
            - "-f"
            - "deployments/${APP_NAME}/${ENV}/envs.yaml"
            - "-f"
            - "deployments/${APP_NAME}/${ENV}/secrets_decrypted.yaml"
            - "${APP_NAME}"
            - "${CHART_NAME}"

Those ${ENV} don't get replaced by the corresponding ENV when the plugin executed the command. How can I use environment variables inside the command?

I've tried https://kubernetes.io/docs/tasks/inject-data-application/define-command-argument-container/#use-environment-variables-to-define-arguments but it didn't work

[alexmt]

Hello @smeeklai ,

Argo CD does not expand environment variables but you can delegated to sh or bash. Try to change the plugin config as following:

server:
  config:
    configManagementPlugins: |
      - name: helm-secrets
        generate:
          command: ["sh", "-c"]
          args: 
            - "helm"
            - "secrets"
            - "template"
            - "--namespace"
            - "${APP_NAME}"
            - "-f"
            - "deployments/${APP_NAME}/${ENV}/values.yaml"
            - "-f"
            - "deployments/${APP_NAME}/${ENV}/envs.yaml"
            - "-f"
            - "deployments/${APP_NAME}/${ENV}/secrets_decrypted.yaml"
            - "${APP_NAME}"
            - "${CHART_NAME}"
            - ```

[smeeklai]

@alexmt I'm getting below error from your answer

Unable to create application: error converting YAML to JSON: yaml: line 20: found character that cannot start any token

But I finally managed to get it work by doing so

configManagementPlugins: |
    - name: helm-secrets
    init:
        command: ["sh", "-c"]
        args:
        - helm repo add "$HELM_REPO_NAME" "$HELM_REPO_URL" && helm repo update
    generate:
        command: ["sh", "-c"]
        args:
        - helm secrets template -f values.yaml -f envs.yaml -f secrets-encrypted.yaml "$APP_NAME" "$HELM_REPO_NAME"/"$CHART_NAME"

Thank you