Skip Tags if exist when copy EC2 to EBS

[rajee5444]

Describe the feature

We have a policy to copy Ec2 instance tags to its attached EBSvolumes.
The policy works fine, but I need to skip if tags already exist with the EBS

Ex: EC2 contained
- Technical:ApplicationID
- Technical:Environment
- Technical:PlatformOwner
- Technical:ApplicationName
- Name
if Volume doesnt have any of these tags it will copy from ec2 to ebs (fine)
Let's assume EBS has already
- Technical:ApplicationName
- Name
then I need to keep EBS Name and Technical:ApplicationName tags, only copy missing tags to EBS from EC2.

Is there any workaround we can do to achieve this, I am new to the custodian and could not find any related documentation for this.

Extra information or context

This policy actually replaces the pre-exist tags on EBS.

• name: ec2-copy-tags-to-ebs
  resource: ebs
  description: |
  Tag EBS with the attached EC2 Tags
  mode:
  type: periodic
  schedule: "rate(1 day)"
  role: *custodian-iam-role (# already defined as Vars)
  filters:
  • type: value
    key: "Attachments[0].Device"
    value: not-null
    actions:
  • type: copy-instance-tags
    tags:
    • Technical:ApplicationID
    • Technical:Environment
    • Technical:PlatformOwner
    • Technical:ApplicationName
    • Name

[HappyKid117]

Hello, I want to work on this enhancement, is it still open?