Fix multiple_dropdowns_question affected by CNVS-19292

migration 20150506164227 should be skipped on large environments and the
following command should be manually run instead.

rails console
  DataFixup::FixCorruptAssessmentQuestionsFromCnvs19292.run(
    [
      'calculated_question',
      'numerical_question',
      'matching_question',
      'multiple_dropdowns_question'
    ],
    Date.parse('2015/3/14').beginning_of_day, # Beginning of corruption
    Date.parse('2015/3/18').end_of_day        # End of corruption
  )

Fixes CNVS-19365

 - Increments AssessmentQuestion version numbers so quizzes will pull new
   data on next quiz take

Test plan
 - Effected quizzes should be fixed

Change-Id: Iafae6525ae2406a6a4b3ae88c6f61e451719dd2b
Reviewed-on: https://gerrit.instructure.com/53536
Reviewed-by: Cody Cutrer <[email protected]>
Tested-by: Jenkins
Reviewed-by: Cameron Sutter <[email protected]>
Product-Review: Brian Finney <[email protected]>
QA-Review: Brian Finney <[email protected]>

db/migrate/20150506164227_fix_corrupt_assessment_questions_from_cnvs19292.rb

@@ -0,0 +1,19 @@
+class FixCorruptAssessmentQuestionsFromCnvs19292 < ActiveRecord::Migration
+  tag :postdeploy
+
+  def up
+    DataFixup::FixCorruptAssessmentQuestionsFromCnvs19292.send_later_if_production_enqueue_args(
+      :run,
+      {
+        :priority => Delayed::LOW_PRIORITY,
+        :max_attempts => 1
+      },
+      [
+        'calculated_question',
+        'numerical_question',
+        'matching_question',
+        'multiple_dropdowns_question'
+      ]
+    )
+  end
+end

lib/data_fixup/fix_corrupt_assessment_questions_from_cnvs19292.rb

@@ -1,7 +1,7 @@
-DataFixup::FixCorruptAssessmentQuestionsFromCnvs19292 = Struct.new(:bug_start_date, :bug_end_date) do
+DataFixup::FixCorruptAssessmentQuestionsFromCnvs19292 = Struct.new(:question_types, :bug_start_date, :bug_end_date) do
   LOG_PREFIX = "FIX_19292_CORRUPTION - "
 
-  def self.run(bug_start_date = false, bug_end_date = false, noop = false)
+  def self.run(question_types, bug_start_date = false, bug_end_date = false, noop = false)
     if noop
       # Dangerous, but noop should only be executed in isolation.
       connection = ActiveRecord::Base.connection
@@ -24,7 +24,7 @@ def connection.exec_cache(sql, *args)
       end
     end
 
-    runner = self.new(bug_start_date, bug_end_date)
+    runner = self.new(question_types, bug_start_date, bug_end_date)
 
     result = runner.fix_assessment_questions
 
@@ -87,13 +87,15 @@ def connection.exec_cache(*args)
   # Update each AssessmentQuestion to increment version_number, this will
   # cause associated QuizQuestions to update on next Quiz take
   def fix_assessment_questions
+    return false unless question_types.present?
+
+    question_type_queries = question_types.map do |qt|
+      "assessment_questions.question_data LIKE '%#{qt}%'"
+    end.join(" or ")
+
     query = AssessmentQuestion
             .joins(:assessment_question_bank => {:quiz_groups => :quiz})
-            .where("
-               assessment_questions.question_data LIKE '%calculated_question%' or
-               assessment_questions.question_data LIKE '%numerical_question%' or
-               assessment_questions.question_data LIKE '%matching_question%'
-            ")
+            .where(question_type_queries)
 
     if bug_start_date && bug_end_date
       query = query