optimize for large files

lib/templates/create_attachments.rb

@@ -3,6 +3,7 @@
 module Templates
   module CreateAttachments
     PDF_CONTENT_TYPE = 'application/pdf'
+    ANNOTATIONS_SIZE_LIMIT = 6.megabytes
     InvalidFileType = Class.new(StandardError)
 
     module_function
@@ -18,7 +19,10 @@ module Templates
         document = template.documents.create!(blob:)
 
         if blob.content_type == PDF_CONTENT_TYPE && blob.metadata['pdf'].nil?
-          blob.metadata['pdf'] = { 'annotations' => Templates::BuildAnnotations.call(document_data) }
+          annotations =
+            document_data.size > ANNOTATIONS_SIZE_LIMIT ? [] : Templates::BuildAnnotations.call(document_data)
+
+          blob.metadata['pdf'] = { 'annotations' => annotations }
           blob.metadata['sha256'] = Base64.urlsafe_encode64(Digest::SHA256.digest(document_data))
         end
 
@@ -37,9 +41,10 @@ module Templates
         data = file.read
 
         if file.content_type == PDF_CONTENT_TYPE
+          annotations = data.size > ANNOTATIONS_SIZE_LIMIT ? [] : Templates::BuildAnnotations.call(data)
           metadata = { 'identified' => true, 'analyzed' => true,
                        'sha256' => Base64.urlsafe_encode64(Digest::SHA256.digest(data)),
-                       'pdf' => { 'annotations' => Templates::BuildAnnotations.call(data) } }
+                       'pdf' => { 'annotations' => annotations } }
         end
 
         ActiveStorage::Blob.create_and_upload!(