1 files changed, 94 insertions, 0 deletions
diff --git a/app/services/ci/retry_job_service.rb b/app/services/ci/retry_job_service.rb
new file mode 100644
index 00000000000..af7e7fa16e9
--- /dev/null
+++ b/app/services/ci/retry_job_service.rb
@@ -0,0 +1,94 @@
+# frozen_string_literal: true
+
+module Ci
+  class RetryJobService < ::BaseService
+    include Gitlab::Utils::StrongMemoize
+
+    def execute(job)
+      if job.retryable?
+        job.ensure_scheduling_type!
+        new_job = retry_job(job)
+
+        ServiceResponse.success(payload: { job: new_job })
+      else
+        ServiceResponse.error(
+          message: 'Job cannot be retried',
+          payload: { job: job, reason: :not_retryable }
+        )
+      end
+    end
+
+    # rubocop: disable CodeReuse/ActiveRecord
+    def clone!(job)
+      # Cloning a job requires a strict type check to ensure
+      # the attributes being used for the clone are taken straight
+      # from the model and not overridden by other abstractions.
+      raise TypeError unless job.instance_of?(Ci::Build)
+
+      check_access!(job)
+
+      new_job = clone_job(job)
+
+      new_job.run_after_commit do
+        ::Ci::CopyCrossDatabaseAssociationsService.new.execute(job, new_job)
+
+        ::Deployments::CreateForBuildService.new.execute(new_job)
+
+        ::MergeRequests::AddTodoWhenBuildFailsService
+          .new(project: project)
+          .close(new_job)
+      end
+
+      ::Ci::Pipelines::AddJobService.new(job.pipeline).execute!(new_job) do |processable|
+        BulkInsertableAssociations.with_bulk_insert do
+          processable.save!
+        end
+      end
+
+      job.reset # refresh the data to get new values of `retried` and `processed`.
+
+      new_job
+    end
+    # rubocop: enable CodeReuse/ActiveRecord
+
+    private
+
+    def retry_job(job)
+      clone!(job).tap do |new_job|
+        check_assignable_runners!(new_job)
+        next if new_job.failed?
+
+        Gitlab::OptimisticLocking.retry_lock(new_job, name: 'retry_build', &:enqueue)
+        AfterRequeueJobService.new(project, current_user).execute(job)
+      end
+    end
+
+    def check_access!(job)
+      unless can?(current_user, :update_build, job)
+        raise Gitlab::Access::AccessDeniedError, '403 Forbidden'
+      end
+    end
+
+    def check_assignable_runners!(job); end
+
+    def clone_job(job)
+      project.builds.new(job_attributes(job))
+    end
+
+    def job_attributes(job)
+      attributes = job.class.clone_accessors.to_h do |attribute|
+        [attribute, job.public_send(attribute)] # rubocop:disable GitlabSecurity/PublicSend
+      end
+
+      if job.persisted_environment.present?
+        attributes[:metadata_attributes] ||= {}
+        attributes[:metadata_attributes][:expanded_environment_name] = job.expanded_environment_name
+      end
+
+      attributes[:user] = current_user
+      attributes
+    end
+  end
+end
+
+Ci::RetryJobService.prepend_mod_with('Ci::RetryJobService')