From 28d93b574d7018f1099ffc3b8a7ac137d532c4ca Mon Sep 17 00:00:00 2001
From: huydx <doxuanhuy@gmail.com>
Date: Fri, 10 Feb 2017 12:31:55 +0900
Subject: [PATCH 1/2] (feat) support max connection setting for database
 configuration

---
 conf/defaults.ini                 |  5 +++++
 pkg/services/sqlstore/sqlstore.go | 16 +++++++++++++++-
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/conf/defaults.ini b/conf/defaults.ini
index 358847724ab..4606de9212e 100644
--- a/conf/defaults.ini
+++ b/conf/defaults.ini
@@ -73,6 +73,11 @@ password =
 # Example: mysql://user:secret@host:port/database
 url =
 
+# Max conn setting default is 0 (mean not set)
+max_conn =
+max_idle_conn =
+max_open_conn =
+
 # For "postgres", use either "disable", "require" or "verify-full"
 # For "mysql", use either "true", "false", or "skip-verify".
 ssl_mode = disable
diff --git a/pkg/services/sqlstore/sqlstore.go b/pkg/services/sqlstore/sqlstore.go
index 5c44fe85f50..0d16d57bcde 100644
--- a/pkg/services/sqlstore/sqlstore.go
+++ b/pkg/services/sqlstore/sqlstore.go
@@ -29,6 +29,9 @@ type DatabaseConfig struct {
 	ClientKeyPath                              string
 	ClientCertPath                             string
 	ServerCertName                             string
+	MaxConn                                    int
+	MaxOpenConn                                int
+	MaxIdleConn                                int
 }
 
 var (
@@ -150,7 +153,15 @@ func getEngine() (*xorm.Engine, error) {
 	}
 
 	sqlog.Info("Initializing DB", "dbtype", DbCfg.Type)
-	return xorm.NewEngine(DbCfg.Type, cnnstr)
+	engine, err := xorm.NewEngine(DbCfg.Type, cnnstr)
+	if err != nil {
+		return nil, err
+	} else {
+		engine.SetMaxConns(DbCfg.MaxConn)
+		engine.SetMaxOpenConns(DbCfg.MaxOpenConn)
+		engine.SetMaxIdleConns(DbCfg.MaxIdleConn)
+	}
+	return engine, nil
 }
 
 func LoadConfig() {
@@ -177,6 +188,9 @@ func LoadConfig() {
 		DbCfg.Host = sec.Key("host").String()
 		DbCfg.Name = sec.Key("name").String()
 		DbCfg.User = sec.Key("user").String()
+		DbCfg.MaxConn = sec.Key("max_conn").MustInt(0)
+		DbCfg.MaxOpenConn = sec.Key("max_open_conn").MustInt(0)
+		DbCfg.MaxIdleConn = sec.Key("max_idle_conn").MustInt(0)
 		if len(DbCfg.Pwd) == 0 {
 			DbCfg.Pwd = sec.Key("password").String()
 		}

From 5b7b3fef647379e25de3fc10056082dbb0391886 Mon Sep 17 00:00:00 2001
From: bergquist <carl.bergquist@gmail.com>
Date: Fri, 10 Feb 2017 15:29:43 +0100
Subject: [PATCH 2/2] conf: adds sample values for db conn settings

---
 conf/sample.ini | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/conf/sample.ini b/conf/sample.ini
index ce9344e1d4f..eaedfcc6f5e 100644
--- a/conf/sample.ini
+++ b/conf/sample.ini
@@ -82,6 +82,12 @@
 # For "sqlite3" only, path relative to data_path setting
 ;path = grafana.db
 
+# Max conn setting default is 0 (mean not set)
+;max_conn =
+;max_idle_conn =
+;max_open_conn =
+
+
 #################################### Session ####################################
 [session]
 # Either "memory", "file", "redis", "mysql", "postgres", default is "file"