1 files changed, 92 insertions, 0 deletions
diff --git a/app/finders/ci/runners_finder.rb b/app/finders/ci/runners_finder.rb
new file mode 100644
index 00000000000..1b76211c524
--- /dev/null
+++ b/app/finders/ci/runners_finder.rb
@@ -0,0 +1,92 @@
+# frozen_string_literal: true
+
+module Ci
+  class RunnersFinder < UnionFinder
+    include Gitlab::Allowable
+
+    NUMBER_OF_RUNNERS_PER_PAGE = 30
+
+    def initialize(current_user:, group: nil, params:)
+      @params = params
+      @group = group
+      @current_user = current_user
+    end
+
+    def execute
+      search!
+      filter_by_status!
+      filter_by_runner_type!
+      filter_by_tag_list!
+      sort!
+      paginate!
+
+      @runners.with_tags
+
+    rescue Gitlab::Access::AccessDeniedError
+      Ci::Runner.none
+    end
+
+    def sort_key
+      if @params[:sort] == 'contacted_asc'
+        'contacted_asc'
+      else
+        'created_date'
+      end
+    end
+
+    private
+
+    def search!
+      @group ? group_runners : all_runners
+
+      @runners = @runners.search(@params[:search]) if @params[:search].present?
+    end
+
+    def all_runners
+      raise Gitlab::Access::AccessDeniedError unless @current_user&.admin?
+
+      @runners = Ci::Runner.all
+    end
+
+    def group_runners
+      raise Gitlab::Access::AccessDeniedError unless can?(@current_user, :admin_group, @group)
+
+      # Getting all runners from the group itself and all its descendants
+      descendant_projects = Project.for_group_and_its_subgroups(@group)
+
+      @runners = Ci::Runner.belonging_to_group_or_project(@group.self_and_descendants, descendant_projects)
+    end
+
+    def filter_by_status!
+      filter_by!(:status_status, Ci::Runner::AVAILABLE_STATUSES)
+    end
+
+    def filter_by_runner_type!
+      filter_by!(:type_type, Ci::Runner::AVAILABLE_TYPES)
+    end
+
+    def filter_by_tag_list!
+      tag_list = @params[:tag_name].presence
+
+      if tag_list
+        @runners = @runners.tagged_with(tag_list)
+      end
+    end
+
+    def sort!
+      @runners = @runners.order_by(sort_key)
+    end
+
+    def paginate!
+      @runners = @runners.page(@params[:page]).per(NUMBER_OF_RUNNERS_PER_PAGE)
+    end
+
+    def filter_by!(scope_name, available_scopes)
+      scope = @params[scope_name]
+
+      if scope.present? && available_scopes.include?(scope)
+        @runners = @runners.public_send(scope) # rubocop:disable GitlabSecurity/PublicSend
+      end
+    end
+  end
+end