Python transformation of Openshift's ImageContentSourcePolicy. It changes the mirrors based on the source. Useful for cases when you do not need to mirror images, but you just proxy them.

README.md

Example of the ImageContentSourcePolicy:

spec:
  repositoryDigestMirrors:
  - mirrors: artifactory-proxy.domain.com.au/redhat-registry-openshift-remote/redhat-openshift-logging-kibana6-rhel8
    source: registry.redhat.io/openshift-logging/kibana6-rhel8
  - mirrors: artifactory-proxy.domain.com.au/redhat-registry-openshift-remote/redhat-openshift-gitops-1-gitops-operator-bundle
    source: registry.connect.redhat.io/openshift-gitops-1/gitops-operator-bundle
  - mirrors: artifactory-proxy.domain.com.au/redhat-registry-openshift-remote/redhat-openshift-gitops-1-dex-rhel8
    source: quay.io/openshift-gitops-1/dex-rhel8
  - mirrors: artifactory-proxy.domain.com.au/redhat-registry-openshift-remote/redhat-rhel8-redis-5
    source: registry.access.redhat.io/rhel8/redis-5

yaml_transformation.py

import yaml

def modify_yaml(yaml_file):
  """
  Transforms the mirror namespace based on the source in the ImageContentSourcePolicy.
  """

  with open(yaml_file, 'r') as file:
      yaml_data = yaml.safe_load(file)

  if 'spec' in yaml_data and 'repositoryDigestMirrors' in yaml_data['spec']:
      mirrors = yaml_data['spec']['repositoryDigestMirrors']
      artifactory = 'artifactory-proxy.domain.com.au'
      for mirror in mirrors:
          if 'source' in mirror and mirror['source'].startswith('registry.access.redhat.io'):
              source_parts = mirror['source'].split('/')
              path = '/'.join(source_parts[1:])
              url = artifactory, 'redhat-registry-access-remote', path
              mirror['mirrors'] = '/'.join(url)
          if 'source' in mirror and mirror['source'].startswith('registry.connect.redhat.io'):
              source_parts = mirror['source'].split('/')
              path = '/'.join(source_parts[1:])
              url = artifactory, 'redhat-registry-connect-remote', path
              mirror['mirrors'] = '/'.join(url)
          if 'source' in mirror and mirror['source'].startswith('quay.io'):
              source_parts = mirror['source'].split('/')
              path = '/'.join(source_parts[1:])
              url = artifactory, 'redhat-quayio-remote', path
              mirror['mirrors'] = '/'.join(url)
          if 'source' in mirror and mirror['source'].startswith('registry.redhat.io'):
              source_parts = mirror['source'].split('/')
              path = '/'.join(source_parts[1:])
              url = artifactory, 'redhat-registry-openshift-remote', path
              mirror['mirrors'] = '/'.join(url)

  with open(yaml_file, 'w') as file:
      yaml.dump(yaml_data, file)

yaml_file_path = 'imageContentSourcePolicy.yaml'
modify_yaml(yaml_file_path)