Bulk insert LinterCheckRuns

Similar to TestrunMessages, we insert all linter check runs through a bulk operation, potentially reducing time.

app/models/linter_check_run.rb

@@ -6,7 +6,12 @@ class LinterCheckRun < ApplicationRecord
   belongs_to :file, class_name: 'CodeOcean::File'
 
   def self.create_from(testrun, assessment)
-    assessment[:detailed_linter_results]&.each do |linter_result|
+    linter_check_runs = create_linter_check_runs(testrun, assessment)
+    validate_and_store!(linter_check_runs)
+  end
+
+  def self.create_linter_check_runs(testrun, assessment)
+    assessment[:detailed_linter_results]&.map do |linter_result|
       check = LinterCheck.find_or_create_by!(code: linter_result[:code]) do |new_check|
         new_check.name = linter_result[:name]
         new_check.severity = linter_result[:severity]
@@ -14,7 +19,7 @@ class LinterCheckRun < ApplicationRecord
 
       file = testrun.submission.file_by_name(linter_result[:file_name])
 
-      LinterCheckRun.create!(
+      LinterCheckRun.new(
         linter_check: check,
         result: linter_result[:result],
         line: linter_result[:line],
@@ -22,9 +27,22 @@ class LinterCheckRun < ApplicationRecord
         testrun:,
         file:
       )
+    end
+  end
+  private_class_method :create_linter_check_runs
+
+  def self.validate_and_store!(linter_check_runs)
+    validated_check_runs = linter_check_runs.map do |check_run|
+      check_run.validate!
+      # We serialize the message without the ID, created_at and updated_at, as they are generated by the database.
+      check_run.serializable_hash(except: %w[id created_at updated_at])
     rescue ActiveRecord::RecordInvalid
       # Something bad happened. Probably, the RegEx in lib/py_lint_adapter.rb didn't work.
       Sentry.set_extras(testrun: testrun.inspect, linter_result:)
     end
+
+    # Now, we store all check runs and skip validations (they are already done)
+    LinterCheckRun.insert_all!(validated_check_runs) # rubocop:disable Rails/SkipsModelValidations
   end
+  private_class_method :validate_and_store!
 end