feat(go): use single db handle; use connection pool;

database/sqlite.go

@@ -1,10 +1,11 @@
 package database
 
 import (
+	"context"
 	"database/sql"
 	"errors"
-	"os"
-	"path/filepath"
+	"github.com/gravitl/netmaker/db"
+	"time"
 
 	_ "github.com/mattn/go-sqlite3" // need to blank import this package
 )
@@ -29,21 +30,17 @@ var SQLITE_FUNCTIONS = map[string]interface{}{
 }
 
 func initSqliteDB() error {
-	// == create db file if not present ==
-	if _, err := os.Stat("data"); os.IsNotExist(err) {
-		os.Mkdir("data", 0700)
-	}
-	dbFilePath := filepath.Join("data", dbFilename)
-	if _, err := os.Stat(dbFilePath); os.IsNotExist(err) {
-		os.Create(dbFilePath)
-	}
-	// == "connect" the database ==
+	gormDB := db.FromContext(db.WithContext(context.TODO()))
+
 	var dbOpenErr error
-	SqliteDB, dbOpenErr = sql.Open("sqlite3", dbFilePath)
+	SqliteDB, dbOpenErr = gormDB.DB()
 	if dbOpenErr != nil {
 		return dbOpenErr
 	}
-	SqliteDB.SetMaxOpenConns(1)
+
+	SqliteDB.SetMaxOpenConns(5)
+	SqliteDB.SetConnMaxLifetime(time.Hour)
+
 	return nil
 }
 
@@ -134,7 +131,7 @@ func sqliteFetchRecords(tableName string) (map[string]string, error) {
 }
 
 func sqliteCloseDB() {
-	SqliteDB.Close()
+	//SqliteDB.Close()
 }
 
 func sqliteConnected() bool {