feat(external-gateway): add external gateway call

storage/external/define.go

@@ -0,0 +1,12 @@
+package external
+
+import (
+	"sync"
+
+	"gitee.com/wheat-os/wheatCache/pkg/proto"
+)
+
+var (
+	oneGatewayClient sync.Once
+	gatewayClient    proto.CommServerClient
+)

storage/external/gateway.go

@@ -0,0 +1,24 @@
+package external
+
+import (
+	"errors"
+
+	"gitee.com/wheat-os/wheatCache/client"
+	"gitee.com/wheat-os/wheatCache/client/middle"
+	"gitee.com/wheat-os/wheatCache/pkg/proto"
+)
+
+func NewGatewayClient() (proto.CommServerClient, error) {
+	oneGatewayClient.Do(func() {
+		cli, err := client.NewWheatClient("127.0.0.1:5891", middle.WithUnaryColonyClient)
+		if err == nil {
+			gatewayClient = cli
+		}
+	})
+
+	if gatewayClient != nil {
+		return gatewayClient, nil
+	}
+
+	return nil, errors.New("get gateway err")
+}