Add Namespace and ProjectStatistics to GraphQL API

We can query namespaces, and nested projects.

Projects now exposes statistics

6 files changed, 75 insertions, 0 deletions

diff --git a/app/graphql/resolvers/namespace_projects_resolver.rb b/app/graphql/resolvers/namespace_projects_resolver.rb
new file mode 100644
index 00000000000..677ea808aeb
--- /dev/null
+++ b/app/graphql/resolvers/namespace_projects_resolver.rb
@@ -0,0 +1,33 @@
+# frozen_string_literal: true
+
+module Resolvers
+  class NamespaceProjectsResolver < BaseResolver
+    argument :include_subgroups, GraphQL::BOOLEAN_TYPE,
+             required: false,
+             default_value: false,
+             description: 'Include also subgroup projects'
+
+    type Types::ProjectType, null: true
+
+    alias_method :namespace, :object
+
+    def resolve(include_subgroups:)
+      # The namespace could have been loaded in batch by `BatchLoader`.
+      # At this point we need the `id` or the `full_path` of the namespace
+      # to query for projects, so make sure it's loaded and not `nil` before continuing.
+      namespace.sync if namespace.respond_to?(:sync)
+      return Project.none if namespace.nil?
+
+      if include_subgroups
+        namespace.all_projects.with_route
+      else
+        namespace.projects.with_route
+      end
+    end
+
+    def self.resolver_complexity(args, child_complexity:)
+      complexity = super
+      complexity + 10
+    end
+  end
+end
diff --git a/app/graphql/resolvers/namespace_resolver.rb b/app/graphql/resolvers/namespace_resolver.rb
new file mode 100644
index 00000000000..17b3800d151
--- /dev/null
+++ b/app/graphql/resolvers/namespace_resolver.rb
@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+module Resolvers
+  class NamespaceResolver < BaseResolver
+    prepend FullPathResolver
+
+    type Types::NamespaceType, null: true
+
+    def resolve(full_path:)
+      model_by_full_path(Namespace, full_path)
+    end
+  end
+end
diff --git a/app/graphql/types/namespace_type.rb b/app/graphql/types/namespace_type.rb
index 36d8ee8c878..f6d91320e50 100644
--- a/app/graphql/types/namespace_type.rb
+++ b/app/graphql/types/namespace_type.rb
@@ -15,5 +15,10 @@ module Types
     field :visibility, GraphQL::STRING_TYPE, null: true
     field :lfs_enabled, GraphQL::BOOLEAN_TYPE, null: true, method: :lfs_enabled?
     field :request_access_enabled, GraphQL::BOOLEAN_TYPE, null: true
+
+    field :projects,
+          Types::ProjectType.connection_type,
+          null: false,
+          resolver: ::Resolvers::NamespaceProjectsResolver
   end
 end
diff --git a/app/graphql/types/project_statistics_type.rb b/app/graphql/types/project_statistics_type.rb
new file mode 100644
index 00000000000..35ae23c21fc
--- /dev/null
+++ b/app/graphql/types/project_statistics_type.rb
@@ -0,0 +1,15 @@
+# frozen_string_literal: true
+
+module Types
+  class ProjectStatisticsType < BaseObject
+    graphql_name 'ProjectStatistics'
+
+    field :commit_count, GraphQL::INT_TYPE, null: false
+
+    field :storage_size, GraphQL::INT_TYPE, null: false
+    field :repository_size, GraphQL::INT_TYPE, null: false
+    field :lfs_objects_size, GraphQL::INT_TYPE, null: false
+    field :build_artifacts_size, GraphQL::INT_TYPE, null: false
+    field :packages_size, GraphQL::INT_TYPE, null: false
+  end
+end
diff --git a/app/graphql/types/project_type.rb b/app/graphql/types/project_type.rb
index 06a1aab09f6..2236ffa394d 100644
--- a/app/graphql/types/project_type.rb
+++ b/app/graphql/types/project_type.rb
@@ -69,6 +69,10 @@ module Types
     field :namespace, Types::NamespaceType, null: false
     field :group, Types::GroupType, null: true
 
+    field :statistics, Types::ProjectStatisticsType,
+          null: false,
+          resolve: -> (obj, _args, _ctx) { Gitlab::Graphql::Loaders::BatchProjectStatisticsLoader.new(obj.id).find }
+
     field :repository, Types::RepositoryType, null: false
 
     field :merge_requests,
diff --git a/app/graphql/types/query_type.rb b/app/graphql/types/query_type.rb
index 40d7de1a49a..536bdb077ad 100644
--- a/app/graphql/types/query_type.rb
+++ b/app/graphql/types/query_type.rb
@@ -14,6 +14,11 @@ module Types
           resolver: Resolvers::GroupResolver,
           description: "Find a group"
 
+    field :namespace, Types::NamespaceType,
+          null: true,
+          resolver: Resolvers::NamespaceResolver,
+          description: "Find a namespace"
+
     field :metadata, Types::MetadataType,
           null: true,
           resolver: Resolvers::MetadataResolver,