feat: nacos configstore basically implementation configuration level …

…2 function

Complete unit testing has not been conducted yet, there may be potential bugs.
The internal details are not a bit messy yet, and some code needs to be refactored.
Fixed a bug where the dataid configuration could not be successfully uploaded (listened to) if there were special characters that existed before.

components/configstores/nacos/change_listener.go

@@ -24,6 +24,7 @@ type subscriberHolder struct {
 type subscriberKey struct {
 	group string
 	key   string
+	label string
 }
 
 func newSubscriberHolder() *subscriberHolder {

components/configstores/nacos/config.go

@@ -13,22 +13,6 @@
 
 package nacos
 
-const (
-	defaultNamespaceId = "" // if this is not set, then nacos will use the default namespaceId.
-	defaultGroup       = "default"
-	defaultLabel       = "default"
-	defaultLogDir      = "/tmp/layotto/nacos/log"
-	defaultCacheDir    = "/tmp/layotto/nacos/cache"
-	defaultLogLevel    = "debug"
-	defaultTimeout     = 10 // second
-)
-
-// map keys
-const (
-	namespaceIdKey = "namespace_id"
-	appNameKey     = "app_name"
-)
-
 type NacosMetadata struct {
 	AppName     string
 	NameSpaceId string

components/configstores/nacos/const.go

@@ -0,0 +1,39 @@
+package nacos
+
+import "errors"
+
+var (
+	// IllegalParam
+	// This error is usually caused by the logic of the parameters,
+	// such as filling in parameters with illegal characters
+	IllegalParam = errors.New("illegal parameter")
+
+	// InvalidDataId
+	// The nacos data_id cannot be divided into key labels using the delimiter set in store instance.
+	InvalidDataId = errors.New("invalid data_id")
+
+	InvalidKey   = errors.New("the key contains delimiter which are not allowed")
+	InvalidLabel = errors.New("the label contains delimiter which are not allowed")
+	InvalidGroup = errors.New("the group is consistent with the group stored in the set tag")
+)
+
+const (
+	defaultNamespaceId = "" // if this is not set, then nacos will use the default namespaceId.
+	defaultGroup       = "default"
+	defaultLabel       = "default"
+	defaultLogDir      = "/tmp/layotto/nacos/log"
+	defaultCacheDir    = "/tmp/layotto/nacos/cache"
+	defaultLogLevel    = "debug"
+	defaultTimeout     = 10 // second
+	defaultTagGroup    = "sidecar_config_tags"
+
+	// Nacos does not allow setting some special characters in the key.
+	// Only English characters and 4 special characters (".", ":", "-", "_") are allowed, with a maximum of 256 bytes.
+	defaultDelimiter = ":"
+)
+
+// map keys
+const (
+	namespaceIdKey = "namespace_id"
+	appNameKey     = "app_name"
+)