Federation: return useful statistic information for nodeinfo (#19561)

Add statistic information for total user count, active user count, issue count and comment count for `/nodeinfo`

1 files changed, 38 insertions, 4 deletions

diff --git a/routers/api/v1/misc/nodeinfo.go b/routers/api/v1/misc/nodeinfo.go
index bc36fa1be1..ce1f9ec0f7 100644
--- a/routers/api/v1/misc/nodeinfo.go
+++ b/routers/api/v1/misc/nodeinfo.go
@@ -6,12 +6,17 @@ package misc
 
 import (
 	"net/http"
+	"time"
 
+	"code.gitea.io/gitea/models"
+	user_model "code.gitea.io/gitea/models/user"
 	"code.gitea.io/gitea/modules/context"
 	"code.gitea.io/gitea/modules/setting"
 	"code.gitea.io/gitea/modules/structs"
 )
 
+const cacheKeyNodeInfoUsage = "API_NodeInfoUsage"
+
 // NodeInfo returns the NodeInfo for the Gitea instance to allow for federation
 func NodeInfo(ctx *context.APIContext) {
 	// swagger:operation GET /nodeinfo miscellaneous getNodeInfo
@@ -23,6 +28,37 @@ func NodeInfo(ctx *context.APIContext) {
 	//   "200":
 	//     "$ref": "#/responses/NodeInfo"
 
+	nodeInfoUsage := structs.NodeInfoUsage{}
+	if setting.Federation.ShareUserStatistics {
+		info, ok := ctx.Cache.Get(cacheKeyNodeInfoUsage).(structs.NodeInfoUsage)
+		if !ok {
+			usersTotal := int(user_model.CountUsers(nil))
+			now := time.Now()
+			timeOneMonthAgo := now.AddDate(0, -1, 0).Unix()
+			timeHaveYearAgo := now.AddDate(0, -6, 0).Unix()
+			usersActiveMonth := int(user_model.CountUsers(&user_model.CountUserFilter{LastLoginSince: &timeOneMonthAgo}))
+			usersActiveHalfyear := int(user_model.CountUsers(&user_model.CountUserFilter{LastLoginSince: &timeHaveYearAgo}))
+
+			allIssues, _ := models.CountIssues(&models.IssuesOptions{})
+			allComments, _ := models.CountComments(&models.FindCommentsOptions{})
+
+			info = structs.NodeInfoUsage{
+				Users: structs.NodeInfoUsageUsers{
+					Total:          usersTotal,
+					ActiveMonth:    usersActiveMonth,
+					ActiveHalfyear: usersActiveHalfyear,
+				},
+				LocalPosts:    int(allIssues),
+				LocalComments: int(allComments),
+			}
+			if err := ctx.Cache.Put(cacheKeyNodeInfoUsage, nodeInfoUsage, 180); err != nil {
+				ctx.InternalServerError(err)
+				return
+			}
+		}
+		nodeInfoUsage = info
+	}
+
 	nodeInfo := &structs.NodeInfo{
 		Version: "2.1",
 		Software: structs.NodeInfoSoftware{
@@ -34,12 +70,10 @@ func NodeInfo(ctx *context.APIContext) {
 		Protocols: []string{"activitypub"},
 		Services: structs.NodeInfoServices{
 			Inbound:  []string{},
-			Outbound: []string{},
+			Outbound: []string{"rss2.0"},
 		},
 		OpenRegistrations: setting.Service.ShowRegistrationButton,
-		Usage: structs.NodeInfoUsage{
-			Users: structs.NodeInfoUsageUsers{},
-		},
+		Usage:             nodeInfoUsage,
 	}
 	ctx.JSON(http.StatusOK, nodeInfo)
 }