Add configuration parameter to set the configure max lifetime of database connections for bbs

Author: geofffranks

cmd/bbs/config/config.go

@@ -52,6 +52,7 @@ type BBSConfig struct {
 	DBReadTimeout                 durationjson.Duration `json:"db_read_timeout,omitempty"`
 	DBWriteTimeout                durationjson.Duration `json:"db_write_timeout,omitempty"`
 	MaxOpenDatabaseConnections    int                   `json:"max_open_database_connections,omitempty"`
+	MaxDatabaseConnectionLifetime durationjson.Duration `json:"max_database_connection_lifetime,omitempty"`
 	MaxTaskRetries                int                   `json:"max_task_retries,omitempty"`
 	RepCACert                     string                `json:"rep_ca_cert,omitempty"`
 	RepClientCert                 string                `json:"rep_client_cert,omitempty"`

cmd/bbs/config/config_test.go

@@ -68,6 +68,7 @@ var _ = Describe("BBSConfig", func() {
             },
 			"max_idle_database_connections": 50,
 			"max_open_database_connections": 200,
+			"max_database_connection_lifetime": "90s",
 			"db_connection_timeout": "30s",
 			"db_read_timeout": "600s",
 			"db_write_timeout": "600s",
@@ -168,6 +169,7 @@ var _ = Describe("BBSConfig", func() {
 			LockTTL:                       durationjson.Duration(locket.DefaultSessionTTL),
 			MaxIdleDatabaseConnections:    50,
 			MaxOpenDatabaseConnections:    200,
+			MaxDatabaseConnectionLifetime: durationjson.Duration(90 * time.Second),
 			DBConnectionTimeout:           durationjson.Duration(30 * time.Second),
 			DBReadTimeout:                 durationjson.Duration(600 * time.Second),
 			DBWriteTimeout:                durationjson.Duration(600 * time.Second),

cmd/bbs/main.go

@@ -120,6 +120,7 @@ func main() {
 
 	sqlConn.SetMaxOpenConns(bbsConfig.MaxOpenDatabaseConnections)
 	sqlConn.SetMaxIdleConns(bbsConfig.MaxIdleDatabaseConnections)
+	sqlConn.SetConnMaxLifetime(time.Duration(bbsConfig.MaxDatabaseConnectionLifetime))
 
 	err = sqlConn.Ping()
 	if err != nil {