Add latest changes from gitlab-org/gitlab@master

3 files changed, 54 insertions, 0 deletions

diff --git a/lib/gitlab/graphql/connections.rb b/lib/gitlab/graphql/connections.rb
index 38c7d98f37c..08d5cd0b72e 100644
--- a/lib/gitlab/graphql/connections.rb
+++ b/lib/gitlab/graphql/connections.rb
@@ -12,6 +12,10 @@ module Gitlab
           Gitlab::Graphql::FilterableArray,
           Gitlab::Graphql::Connections::FilterableArrayConnection
         )
+        GraphQL::Relay::BaseConnection.register_connection_implementation(
+          Gitlab::Graphql::ExternallyPaginatedArray,
+          Gitlab::Graphql::Connections::ExternallyPaginatedArrayConnection
+        )
       end
     end
   end
diff --git a/lib/gitlab/graphql/connections/externally_paginated_array_connection.rb b/lib/gitlab/graphql/connections/externally_paginated_array_connection.rb
new file mode 100644
index 00000000000..f0861260691
--- /dev/null
+++ b/lib/gitlab/graphql/connections/externally_paginated_array_connection.rb
@@ -0,0 +1,35 @@
+# frozen_string_literal: true
+
+# Make a customized connection type
+module Gitlab
+  module Graphql
+    module Connections
+      class ExternallyPaginatedArrayConnection < GraphQL::Relay::ArrayConnection
+        # As the pagination happens externally
+        # we just return all the nodes here.
+        def sliced_nodes
+          @nodes
+        end
+
+        def start_cursor
+          nodes.previous_cursor
+        end
+
+        def end_cursor
+          nodes.next_cursor
+        end
+
+        def next_page?
+          end_cursor.present?
+        end
+
+        def previous_page?
+          start_cursor.present?
+        end
+
+        alias_method :has_next_page, :next_page?
+        alias_method :has_previous_page, :previous_page?
+      end
+    end
+  end
+end
diff --git a/lib/gitlab/graphql/externally_paginated_array.rb b/lib/gitlab/graphql/externally_paginated_array.rb
new file mode 100644
index 00000000000..4797fe15cd3
--- /dev/null
+++ b/lib/gitlab/graphql/externally_paginated_array.rb
@@ -0,0 +1,15 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module Graphql
+    class ExternallyPaginatedArray < Array
+      attr_reader :previous_cursor, :next_cursor
+
+      def initialize(previous_cursor, next_cursor, *args)
+        super(args)
+        @previous_cursor = previous_cursor
+        @next_cursor = next_cursor
+      end
+    end
+  end
+end