Schedule compliance purging 🤷

app/models/compliance.rb

@@ -1,4 +1,5 @@
 class Compliance < ApplicationRecord
+  include_concern 'Purging'
   belongs_to  :resource,  :polymorphic => true
   has_many    :compliance_details, :dependent => :destroy
 

app/models/compliance/purging.rb

@@ -0,0 +1,25 @@
+class Compliance < ApplicationRecord
+  module Purging
+    extend ActiveSupport::Concern
+    include PurgingMixin
+
+    module ClassMethods
+      def purge_date
+        ::Settings.compliances.history.keep_compliances.to_i_with_method.seconds.ago.utc
+      end
+
+      def purge_window_size
+        ::Settings.compliances.history.purge_window_size
+      end
+
+      def purge_scope(older_than = nil)
+        # do i need to check that the resource is nil as well?
+        where(arel_table[:timestamp].lteq(older_than))
+      end
+
+      def purge_associated_records(ids)
+        ComplianceDetail.where(:compliance_id => ids).delete_all
+      end
+    end
+  end
+end

app/models/miq_schedule_worker/jobs.rb

@@ -108,6 +108,10 @@ def policy_event_purge_timer
     queue_work(:class_name => "PolicyEvent", :method_name => "purge_timer", :zone => nil)
   end
 
+  def compliance_purge_timer
+    queue_work(:class_name => "Compliance", :method_name => "purge_timer", :zone => nil)
+  end
+
   def miq_report_result_purge_timer
     queue_work(:class_name => "MiqReportResult", :method_name => "purge_timer", :zone => nil)
   end

app/models/miq_schedule_worker/runner.rb

@@ -217,6 +217,11 @@ def schedules_for_scheduler_role
       enqueue(:task_purge_timer)
     end
 
+    every = worker_settings[:compliance_purge_interval]
+    scheduler.schedule_every(every, :first_in => every) do
+      enqueue(:compliance_purge_interval)
+    end
+
     every = worker_settings[:vim_performance_states_purge_interval]
     scheduler.schedule_every(every, :first_in => every) do
       enqueue(:vim_performance_states_purge_timer)

config/settings.yml

@@ -74,6 +74,10 @@
       :memory_method_description: High Normal Range of Allocated Memory
   :failover:
     :rule: discovered
+:compliances:
+  :history:
+    :keep_compliances: 6.months
+    :purge_window_size: 10000
 :coresident_miqproxy:
   :concurrent_per_ems: 1
   :concurrent_per_host: 1
@@ -1216,6 +1220,7 @@
       :authentication_check_interval: 1.hour
       :chargeback_generation_interval: 1.day
       :chargeback_generation_time_utc: 01:00:00
+      :compliance_purge_interval: 1.week
       :db_diagnostics_interval: 30.minutes
       :drift_state_purge_interval: 1.day
       :event_streams_purge_interval: 1.day

spec/models/compliance/purging_spec.rb

@@ -0,0 +1,54 @@
+describe Compliance do
+  context "::Purging" do
+    context ".purge_queue" do
+      before do
+        EvmSpecHelper.create_guid_miq_server_zone
+      end
+      let(:purge_time) { (Time.zone.now + 10).round }
+
+      it "submits to the queue" do
+        expect(described_class).to receive(:purge_date).and_return(purge_time)
+        described_class.purge_timer
+
+        q = MiqQueue.all
+        expect(q.length).to eq(1)
+        expect(q.first).to have_attributes(
+          :class_name  => described_class.name,
+          :method_name => "purge_by_date",
+          :args        => [purge_time]
+        )
+      end
+    end
+
+    context ".purge" do
+      let(:deleted_date) { 6.months.ago }
+
+      before do
+        @old_compliance        = FactoryBot.create(:compliance, :timestamp => deleted_date - 1.day)
+        @old_compliance_detail = FactoryBot.create(:compliance_detail, :compliance_id => @old_compliance.id)
+        @purge_date_compliance = FactoryBot.create(:compliance, :timestamp => deleted_date)
+        @new_compliance        = FactoryBot.create(:compliance, :timestamp => deleted_date + 1.day)
+      end
+
+      def assert_unpurged_ids(unpurged_ids)
+        expect(described_class.order(:id).pluck(:id)).to eq(Array(unpurged_ids).sort)
+      end
+
+      def assert_purged_associated_records
+        expect(ComplianceDetail.count).to eq(0)
+      end
+
+      it "purge_date and older" do
+        described_class.purge(deleted_date)
+
+        assert_unpurged_ids(@new_compliance.id)
+        assert_purged_associated_records
+      end
+
+      it "with a window" do
+        described_class.purge(deleted_date, 1)
+        assert_unpurged_ids(@new_compliance.id)
+      end
+    end
+  end
+end