Add Project, User, Group count to API

doc/api/statistics.md

@@ -28,6 +28,9 @@ Example response:
    "snippets": "50",
    "ssh_keys": "10",
    "milestones": "40",
+   "users": "50",
+   "groups": "10",
+   "projects": "20",
    "active_users": "50"
 }
 ```

lib/api/entities.rb

@@ -1199,6 +1199,18 @@ module API
         approximate_count_with_delimiters(counts, ::Milestone)
       end
 
+      expose :users do |counts|
+        approximate_count_with_delimiters(counts, ::User)
+      end
+
+      expose :projects do |counts|
+        approximate_count_with_delimiters(counts, ::Project)
+      end
+
+      expose :groups do |counts|
+        approximate_count_with_delimiters(counts, ::Group)
+      end
+
       expose :active_users do |_|
         number_with_delimiter(::User.active.count)
       end

lib/api/statistics.rb

@@ -4,7 +4,7 @@ module API
   class Statistics < Grape::API
     before { authenticated_as_admin! }
 
-    COUNTED_ITEMS = [ForkNetworkMember, ForkNetwork, Issue,
+    COUNTED_ITEMS = [Project, User, Group, ForkNetworkMember, ForkNetwork, Issue,
                      MergeRequest, Note, Snippet, Key, Milestone].freeze
 
     desc 'Get the current application statistics' do

spec/fixtures/api/schemas/statistics.json

@@ -8,6 +8,9 @@
     "snippets",
     "ssh_keys",
     "milestones",
+    "users",
+    "projects",
+    "groups",
     "active_users"
   ],
   "properties" : {
@@ -18,6 +21,9 @@
     "snippets'": { "type": "string" },
     "ssh_keys'": { "type": "string" },
     "milestones'": { "type": "string" },
+    "users'": { "type": "string" },
+    "projects'": { "type": "string" },
+    "groups'": { "type": "string" },
     "active_users'": { "type": "string" }
   }
 }

spec/requests/api/statistics_spec.rb

@@ -4,6 +4,7 @@ require 'spec_helper'
 
 describe API::Statistics, 'Statistics' do
   include ProjectForksHelper
+  TABLES_TO_ANALYZE = %w[projects users namespaces issues merge_requests notes snippets fork_networks fork_network_members keys milestones].freeze
 
   let(:path) { "/application/statistics" }
 
@@ -49,7 +50,7 @@ describe API::Statistics, 'Statistics' do
 
         # Make sure the reltuples have been updated
         # to get a correct count on postgresql
-        %w[issues merge_requests notes snippets fork_networks fork_network_members keys milestones users].each do |table|
+        TABLES_TO_ANALYZE.each do |table|
           ActiveRecord::Base.connection.execute("ANALYZE #{table}")
         end
 
@@ -62,6 +63,9 @@ describe API::Statistics, 'Statistics' do
         expect(json_response['forks']).to eq('1')
         expect(json_response['ssh_keys']).to eq('1')
         expect(json_response['milestones']).to eq('3')
+        expect(json_response['users']).to eq('1')
+        expect(json_response['projects']).to eq('5') # projects + forks
+        expect(json_response['groups']).to eq('1')
         expect(json_response['active_users']).to eq('1')
       end
     end