Migrate virus scans to blob metadata

lib/tasks/deployment/20190425102459_migrate_virus_scans.rake

@@ -0,0 +1,22 @@
+namespace :after_party do
+  desc 'Deployment task: migrate_virus_scans'
+  task migrate_virus_scans: :environment do
+    puts "Running deploy task 'migrate_virus_scans'"
+
+    virus_scans = VirusScan.all
+    progress = ProgressReport.new(virus_scans.count)
+    virus_scans.find_each do |virus_scan|
+      blob = ActiveStorage::Blob.find_by(key: virus_scan.blob_key)
+      if blob
+        metadata = { virus_scan_result: virus_scan.status, scanned_at: virus_scan.scanned_at }
+        blob.update_column(:metadata, blob.metadata.merge(metadata))
+      end
+      progress.inc
+    end
+    progress.finish
+
+    # Update task as completed.  If you remove the line below, the task will
+    # run with every deploy (or every time you call after_party:run).
+    AfterParty::TaskRecord.create version: '20190425102459'
+  end
+end