From ffb7ab31f2cb3629a80e8105f84575d5b1182051 Mon Sep 17 00:00:00 2001
From: zeripath <art27@cantab.net>
Date: Sat, 21 May 2022 19:50:50 +0100
Subject: [PATCH] Estimate Action Count in Statistics (#19775)

---
 models/db/context.go            | 22 ++++++++++++++++++++++
 models/statistic.go             |  2 +-
 options/locale/locale_en-US.ini |  2 +-
 3 files changed, 24 insertions(+), 2 deletions(-)

diff --git a/models/db/context.go b/models/db/context.go
index c823952cf..dae7be3a9 100644
--- a/models/db/context.go
+++ b/models/db/context.go
@@ -11,6 +11,7 @@ import (
 	"code.gitea.io/gitea/modules/setting"
 
 	"xorm.io/builder"
+	"xorm.io/xorm/schemas"
 )
 
 // DefaultContext is the default context to run xorm queries in
@@ -175,3 +176,24 @@ func CountByBean(ctx context.Context, bean interface{}) (int64, error) {
 func TableName(bean interface{}) string {
 	return x.TableName(bean)
 }
+
+// EstimateCount returns an estimate of total number of rows in table
+func EstimateCount(ctx context.Context, bean interface{}) (int64, error) {
+	e := GetEngine(ctx)
+	e.Context(ctx)
+
+	var rows int64
+	var err error
+	tablename := TableName(bean)
+	switch x.Dialect().URI().DBType {
+	case schemas.MYSQL:
+		_, err = e.Context(ctx).SQL("SELECT table_rows FROM information_schema.tables WHERE tables.table_name = ? AND tables.table_schema = ?;", tablename, x.Dialect().URI().DBName).Get(&rows)
+	case schemas.POSTGRES:
+		_, err = e.Context(ctx).SQL("SELECT reltuples AS estimate FROM pg_class WHERE relname = ?;", tablename).Get(&rows)
+	case schemas.MSSQL:
+		_, err = e.Context(ctx).SQL("sp_spaceused ?;", tablename).Get(&rows)
+	default:
+		return e.Context(ctx).Count(tablename)
+	}
+	return rows, err
+}
diff --git a/models/statistic.go b/models/statistic.go
index 2b6b3a182..dfc236ec5 100644
--- a/models/statistic.go
+++ b/models/statistic.go
@@ -56,7 +56,7 @@ func GetStatistic() (stats Statistic) {
 	stats.Counter.Repo, _ = repo_model.CountRepositories(db.DefaultContext, repo_model.CountRepositoryOptions{})
 	stats.Counter.Watch, _ = e.Count(new(repo_model.Watch))
 	stats.Counter.Star, _ = e.Count(new(repo_model.Star))
-	stats.Counter.Action, _ = e.Count(new(Action))
+	stats.Counter.Action, _ = db.EstimateCount(db.DefaultContext, new(Action))
 	stats.Counter.Access, _ = e.Count(new(access_model.Access))
 
 	type IssueCount struct {
diff --git a/options/locale/locale_en-US.ini b/options/locale/locale_en-US.ini
index ba619b413..5061c735a 100644
--- a/options/locale/locale_en-US.ini
+++ b/options/locale/locale_en-US.ini
@@ -2423,7 +2423,7 @@ dashboard.new_version_hint = Gitea %s is now available, you are running %s. Chec
 dashboard.statistic = Summary
 dashboard.operations = Maintenance Operations
 dashboard.system_status = System Status
-dashboard.statistic_info = The Gitea database holds <b>%d</b> users, <b>%d</b> organizations, <b>%d</b> public keys, <b>%d</b> repositories, <b>%d</b> watches, <b>%d</b> stars, <b>%d</b> actions, <b>%d</b> accesses, <b>%d</b> issues, <b>%d</b> comments, <b>%d</b> social accounts, <b>%d</b> follows, <b>%d</b> mirrors, <b>%d</b> releases, <b>%d</b> authentication sources, <b>%d</b> webhooks, <b>%d</b> milestones, <b>%d</b> labels, <b>%d</b> hook tasks, <b>%d</b> teams, <b>%d</b> update tasks, <b>%d</b> attachments.
+dashboard.statistic_info = The Gitea database holds <b>%d</b> users, <b>%d</b> organizations, <b>%d</b> public keys, <b>%d</b> repositories, <b>%d</b> watches, <b>%d</b> stars, ~<b>%d</b> actions, <b>%d</b> accesses, <b>%d</b> issues, <b>%d</b> comments, <b>%d</b> social accounts, <b>%d</b> follows, <b>%d</b> mirrors, <b>%d</b> releases, <b>%d</b> authentication sources, <b>%d</b> webhooks, <b>%d</b> milestones, <b>%d</b> labels, <b>%d</b> hook tasks, <b>%d</b> teams, <b>%d</b> update tasks, <b>%d</b> attachments.
 dashboard.operation_name = Operation Name
 dashboard.operation_switch = Switch
 dashboard.operation_run = Run