Merge pull request #127 from fangyincheng/attachments

Imp:  attachments

request.go

@@ -321,7 +321,22 @@ func unpackRequestBody(buf []byte, reqObj interface{}) error {
 	if err != nil {
 		return perrors.WithStack(err)
 	}
-	req[6] = attachments
+	if v, ok := attachments.(map[interface{}]interface{}); ok {
+		req[6] = ToMapStringString(v)
+		return nil
+	}
+
+	return perrors.Errorf("get wrong attachments: %+v", attachments)
+}
 
-	return nil
+func ToMapStringString(origin map[interface{}]interface{}) map[string]string {
+	dest := make(map[string]string)
+	for k, v := range origin {
+		if kv, ok := k.(string); ok {
+			if vv, ok := v.(string); ok {
+				dest[kv] = vv
+			}
+		}
+	}
+	return dest
 }

response.go

@@ -174,11 +174,11 @@ func unpackResponseBody(buf []byte, resp interface{}) error {
 			if err != nil {
 				return perrors.WithStack(err)
 			}
-			atta, ok := attachments.(map[string]string)
-			if ok {
+			if v, ok := attachments.(map[interface{}]interface{}); ok {
+				atta := ToMapStringString(v)
 				response.Attachments = atta
 			} else {
-				return perrors.Errorf("get wrong attachments: %+v", atta)
+				return perrors.Errorf("get wrong attachments: %+v", attachments)
 			}
 		}
 
@@ -199,11 +199,11 @@ func unpackResponseBody(buf []byte, resp interface{}) error {
 			if err != nil {
 				return perrors.WithStack(err)
 			}
-			atta, ok := attachments.(map[string]string)
-			if ok {
+			if v, ok := attachments.(map[interface{}]interface{}); ok {
+				atta := ToMapStringString(v)
 				response.Attachments = atta
 			} else {
-				return perrors.Errorf("get wrong attachments: %+v", atta)
+				return perrors.Errorf("get wrong attachments: %+v", attachments)
 			}
 		}
 
@@ -215,11 +215,11 @@ func unpackResponseBody(buf []byte, resp interface{}) error {
 			if err != nil {
 				return perrors.WithStack(err)
 			}
-			atta, ok := attachments.(map[string]string)
-			if ok {
+			if v, ok := attachments.(map[interface{}]interface{}); ok {
+				atta := ToMapStringString(v)
 				response.Attachments = atta
 			} else {
-				return perrors.Errorf("get wrong attachments: %+v", atta)
+				return perrors.Errorf("get wrong attachments: %+v", attachments)
 			}
 		}
 		return nil