Merge pull request #2 from 0311xuyang/dev

update

.github/workflows/dev.yml

@@ -13,6 +13,11 @@ jobs:
         ports:
           - 8000:8000
         options: --name dynamo-local
+      mysql-local:
+        image: mysql:latest
+        ports:
+          - 3306:3306
+        options: --name mysql-local -e MYSQL_ROOT_PASSWORD=123456 -e MYSQL_DATABASE=toolkit
     steps:
       - name: Checkout
         uses: actions/checkout@v3
@@ -25,5 +30,8 @@ jobs:
       - name: Wait for DynamoDB Local to start
         run: |
           while ! nc -z localhost 8000; do sleep 1; done
+      - name: Wait for MySQL Local to start
+        run: |
+          while ! nc -z localhost 3306; do sleep 1; done
       - name: Run tests
         run: go test -v ./...

dal/dal.go

@@ -0,0 +1,31 @@
+package dal
+
+import (
+	"sync"
+
+	"gorm.io/driver/mysql"
+	"gorm.io/gorm"
+)
+
+var (
+	// DB is the database connection.
+	DB   *gorm.DB
+	once sync.Once
+)
+
+func init() {
+	once.Do(func() {
+		DB = ConnectDB()
+	})
+}
+
+// ConnectDB connects to the database.
+func ConnectDB() *gorm.DB {
+	dsn := "root:123456@tcp(127.0.0.1:3306)/toolkit?charset=utf8mb4&parseTime=True"
+	db, err := gorm.Open(mysql.Open(dsn), &gorm.Config{})
+	if err != nil {
+		panic(err)
+	}
+	Prepare(db)
+	return db
+}