resume.yaml

# This cleaner:
# - runs at 8AM every day
# - finds all Deployments/StatefulSet/DaemonSet with
# annotation "pause-resume"
#
# For any such resource: 
# - get old replicas in the annotation "previous-replicas"
# - set their replicas to such value (scale deployment/statefulset/daemonset up)
#
apiVersion: apps.projectsveltos.io/v1alpha1
kind: Cleaner
metadata:
  name: scale-up-deployment-statefulset-daemonset
spec:
  schedule: "* 8 * * *"
  action: Transform
  transform: |
    -- Set replicas to 0
    function transform()
      hs = {}
      if obj.metadata.annotations == nil then
        return
      end
      if not obj.metadata.annotations["previous-replicas"] then
        return
      end
      -- reset replicas
      obj.spec.replicas = tonumber(obj.metadata.annotations["previous-replicas"])
      hs.resource = obj
      return hs
    end  
  resourcePolicySet:
    resourceSelectors:
    - kind: Deployment
      group: apps
      version: v1
    - kind: StatefulSet
      group: "apps"
      version: v1
    - kind: DaemonSet
      group: "apps"
      version: v1
    aggregatedSelection: |
      function evaluate()
        local hs = {}

        -- returns true if object has annotaiton "pause-resume" 
        function hasPauseAnnotation(obj)
          if obj.metadata.annotations ~= nil then
            if obj.metadata.annotations["pause-resume"] then
              return true
            end

            return false
          end

          return false
        end

        local resourceToUnPause = {}

        for _, resource in ipairs(resources) do
          if hasPauseAnnotation(resource) then
            table.insert(resourceToUnPause, {resource = resource})
          end
        end

        if #resourceToUnPause > 0 then
          hs.resources = resourceToUnPause
        end
        return hs
      end