Improve tag and configurator rules to keep up with official site

cluster/router/condition/dynamic_router.go

@@ -127,8 +127,7 @@ func (s *ServiceRouter) Notify(invokers []protocol.Invoker) {
 		logger.Warnf("config center does not start, please check if the configuration center has been properly configured in dubbogo.yml")
 		return
 	}
-	key := strings.Join([]string{strings.Join([]string{url.Service(), url.GetParam(constant.VersionKey, ""), url.GetParam(constant.GroupKey, "")}, ":"),
-		constant.ConditionRouterRuleSuffix}, "")
+	key := strings.Join([]string{url.ColonSeparatedKey(), constant.ConditionRouterRuleSuffix}, "")
 	dynamicConfiguration.AddListener(key, s)
 	value, err := dynamicConfiguration.GetRule(key)
 	if err != nil {

cluster/router/tag/match.go

@@ -99,22 +99,38 @@ func requestTag(invokers []protocol.Invoker, url *common.URL, invocation protoco
 	var (
 		addresses []string
 		result    []protocol.Invoker
+		match     []*common.ParamMatch
 	)
 	for _, tagCfg := range cfg.Tags {
 		if tagCfg.Name == tag {
 			addresses = tagCfg.Addresses
+			match = tagCfg.Match
 		}
 	}
-	if len(addresses) == 0 {
-		// filter tag does not match
-		result = filterInvokers(invokers, tag, func(invoker protocol.Invoker, tag interface{}) bool {
-			return invoker.GetURL().GetParam(constant.Tagkey, "") != tag
+
+	// only one of 'match' and 'addresses' will take effect if both are specified.
+	if len(match) != 0 {
+		result = filterInvokers(invokers, match, func(invoker protocol.Invoker, match interface{}) bool {
+			matches := match.([]*common.ParamMatch)
+			for _, m := range matches {
+				if !m.IsMatch(invoker.GetURL()) {
+					return true
+				}
+			}
+			return false
 		})
-		logger.Debugf("[tag router] filter dynamic tag, tag=%s, invokers=%+v", tag, result)
 	} else {
-		// filter address does not match
-		result = filterInvokers(invokers, addresses, getAddressPredicate(false))
-		logger.Debugf("[tag router] filter dynamic tag address, invokers=%+v", result)
+		if len(addresses) == 0 {
+			// filter tag does not match
+			result = filterInvokers(invokers, tag, func(invoker protocol.Invoker, tag interface{}) bool {
+				return invoker.GetURL().GetParam(constant.Tagkey, "") != tag
+			})
+			logger.Debugf("[tag router] filter dynamic tag, tag=%s, invokers=%+v", tag, result)
+		} else {
+			// filter address does not match
+			result = filterInvokers(invokers, addresses, getAddressPredicate(false))
+			logger.Debugf("[tag router] filter dynamic tag address, invokers=%+v", result)
+		}
 	}
 	// returns the result directly
 	if *cfg.Force || requestIsForce(url, invocation) {
@@ -135,6 +151,7 @@ func requestTag(invokers []protocol.Invoker, url *common.URL, invocation protoco
 	return result
 }
 
+// filterInvokers remove invokers that match with predicate from the original input.
 func filterInvokers(invokers []protocol.Invoker, param interface{}, predicate predicate) []protocol.Invoker {
 	result := make([]protocol.Invoker, len(invokers))
 	copy(result, invokers)

common/constant/cluster.go

@@ -32,3 +32,8 @@ const (
 const (
 	NonImportErrorMsgFormat = "Cluster for %s is not existing, make sure you have import the package."
 )
+
+const (
+	MatchCondition = "MATCH_CONDITION"
+	APIVersion     = "v3.0"
+)

common/host_util.go

@@ -20,6 +20,7 @@ package common
 import (
 	"os"
 	"strconv"
+	"strings"
 )
 
 import (
@@ -80,3 +81,28 @@ func isValidPort(port string) bool {
 	portInt, err := strconv.Atoi(port)
 	return err == nil && portInt > 0 && portInt < 65536
 }
+
+func IsMatchGlobPattern(pattern, value string) bool {
+	if constant.AnyValue == pattern {
+		return true
+	}
+	if pattern == "" && value == "" {
+		return true
+	}
+	if pattern == "" || value == "" {
+		return false
+	}
+
+	i := strings.Index(pattern, constant.AnyValue)
+	if i == -1 { // doesn't find "*"
+		return value == pattern
+	} else if i == len(pattern)-1 { // "*" is at the end
+		return strings.HasPrefix(value, pattern[0:i])
+	} else if i == 0 { // "*" is at the beginning
+		return strings.HasSuffix(value, pattern[i+1:])
+	} else { // "*" is in the middle
+		prefix := pattern[0:i]
+		suffix := pattern[i+1:]
+		return strings.HasPrefix(value, prefix) && strings.HasSuffix(value, suffix)
+	}
+}

common/match.go

@@ -0,0 +1,102 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package common
+
+import (
+	"dubbo.apache.org/dubbo-go/v3/common/constant"
+	"fmt"
+	"net"
+	"regexp"
+	"strings"
+)
+
+type ParamMatch struct {
+	Key   string      `yaml:"key" json:"key,omitempty" property:"key"`
+	Value StringMatch `yaml:"value" json:"value,omitempty" property:"value"`
+}
+
+func (p *ParamMatch) IsMatch(url *URL) bool {
+	return p.Value.IsMatch(url.GetParam(p.Key, ""))
+}
+
+type StringMatch struct {
+	Exact    string `yaml:"exact" json:"exact,omitempty" property:"exact"`
+	Prefix   string `yaml:"prefix" json:"prefix,omitempty" property:"prefix"`
+	Regex    string `yaml:"regex" json:"regex,omitempty" property:"regex"`
+	Noempty  string `yaml:"noempty" json:"noempty,omitempty" property:"noempty"`
+	Empty    string `yaml:"empty" json:"empty,omitempty" property:"empty"`
+	Wildcard string `yaml:"wildcard" json:"wildcard,omitempty" property:"wildcard"`
+}
+
+func (p *StringMatch) IsMatch(value string) bool {
+	if p.Exact != "" {
+		return p.Exact == value
+	} else if p.Prefix != "" {
+		return strings.HasPrefix(value, p.Prefix)
+	} else if p.Regex != "" {
+		match, _ := regexp.MatchString(p.Regex, value)
+		return match
+	} else if p.Wildcard != "" {
+		return value == p.Wildcard || constant.AnyValue == p.Wildcard
+	} else if p.Empty != "" {
+		return value == ""
+	} else if p.Noempty != "" {
+		return value != ""
+	}
+	return false
+}
+
+type AddressMatch struct {
+	Wildcard string `yaml:"wildcard" json:"wildcard,omitempty" property:"wildcard"`
+	Cird     string `yaml:"cird" json:"cird,omitempty" property:"cird"`
+	Exact    string `yaml:"exact" json:"exact,omitempty" property:"exact"`
+}
+
+func (p *AddressMatch) IsMatch(value string) bool {
+	if p.Cird != "" && value != "" {
+		_, ipnet, err := net.ParseCIDR(p.Cird)
+		if err != nil {
+			fmt.Println("Error", p.Cird, err)
+			return false
+		}
+		return ipnet.Contains(net.ParseIP(value))
+	}
+	if p.Wildcard != "" && value != "" {
+		if constant.AnyValue == value || constant.AnyHostValue == value {
+			return true
+		}
+		return IsMatchGlobPattern(p.Wildcard, value)
+	}
+	if p.Exact != "" && value != "" {
+		return p.Exact == value
+	}
+	return false
+}
+
+type ListStringMatch struct {
+	Oneof []StringMatch `yaml:"oneof" json:"oneof,omitempty" property:"oneof"`
+}
+
+func (p *ListStringMatch) IsMatch(value string) bool {
+	for _, match := range p.Oneof {
+		if match.IsMatch(value) {
+			return true
+		}
+	}
+	return false
+}

common/url.go

@@ -115,7 +115,19 @@ type URL struct {
 	Password string
 	Methods  []string
 	// special for registry
-	SubURL *URL
+	SubURL     *URL
+	attributes sync.Map
+}
+
+func (c *URL) AddAttribute(key string, value interface{}) {
+	if value != nil {
+		c.attributes.Store(key, value)
+	}
+}
+
+func (c *URL) GetAttribute(key string) interface{} {
+	v, _ := c.attributes.Load(key)
+	return v
 }
 
 // JavaClassName POJO for URL

config/router_config.go

@@ -18,6 +18,7 @@
 package config
 
 import (
+	"dubbo.apache.org/dubbo-go/v3/common"
 	"github.com/creasty/defaults"
 )
 
@@ -41,8 +42,9 @@ type RouterConfig struct {
 }
 
 type Tag struct {
-	Name      string   `yaml:"name" json:"name,omitempty" property:"name"`
-	Addresses []string `yaml:"addresses" json:"addresses,omitempty" property:"addresses"`
+	Name      string               `yaml:"name" json:"name,omitempty" property:"name"`
+	Match     []*common.ParamMatch `yaml:"match" json:"match,omitempty" property:"match"`
+	Addresses []string             `yaml:"addresses" json:"addresses,omitempty" property:"addresses"`
 }
 
 // Prefix dubbo.router

config_center/configurator/override.go

@@ -18,6 +18,7 @@
 package configurator
 
 import (
+	"dubbo.apache.org/dubbo-go/v3/config_center/parser"
 	"strings"
 )
 
@@ -57,34 +58,63 @@ func (c *overrideConfigurator) Configure(url *common.URL) {
 	// branch for version 2.7.x
 	apiVersion := c.configuratorUrl.GetParam(constant.ConfigVersionKey, "")
 	if len(apiVersion) != 0 {
+		var host string
 		currentSide := url.GetParam(constant.SideKey, "")
 		configuratorSide := c.configuratorUrl.GetParam(constant.SideKey, "")
-		if currentSide == configuratorSide && common.DubboRole[common.CONSUMER] == currentSide && c.configuratorUrl.Port == "0" {
-			localIP := common.GetLocalIp()
-			c.configureIfMatch(localIP, url)
-		} else if currentSide == configuratorSide && common.DubboRole[common.PROVIDER] == currentSide && c.configuratorUrl.Port == url.Port {
-			c.configureIfMatch(url.Ip, url)
+		if currentSide == configuratorSide && common.DubboRole[common.CONSUMER] == currentSide {
+			host = common.GetLocalIp()
+		} else if currentSide == configuratorSide && common.DubboRole[common.PROVIDER] == currentSide {
+			host = url.Ip
+		}
+
+		if strings.HasPrefix(apiVersion, constant.APIVersion) {
+			c.configureIfMatchV3(host, url)
+		} else {
+			c.configureIfMatch(host, url)
 		}
 	} else {
 		// branch for version 2.6.x and less
 		c.configureDeprecated(url)
 	}
 }
 
+// configureIfMatch
+func (c *overrideConfigurator) configureIfMatchV3(host string, url *common.URL) {
+	conditionKeys := getConditionKeys()
+	matcher := c.configuratorUrl.GetAttribute(constant.MatchCondition)
+	if matcher != nil {
+		conditionMatcher := matcher.(*parser.ConditionMatch)
+		if conditionMatcher.IsMatch(host, url) {
+			configUrl := c.configuratorUrl.CloneExceptParams(conditionKeys)
+			url.SetParams(configUrl.GetParams())
+		}
+	}
+}
+
+func (c *overrideConfigurator) configureDeprecated(url *common.URL) {
+	// If override url has port, means it is a provider address. We want to control a specific provider with this override url, it may take effect on the specific provider instance or on consumers holding this provider instance.
+	if c.configuratorUrl.Port != "0" {
+		if url.Port == c.configuratorUrl.Port {
+			c.configureIfMatch(url.Ip, url)
+		}
+	} else {
+		// override url don't have a port, means the ip override url specify is a consumer address or 0.0.0.0
+		// 1.If it is a consumer ip address, the intention is to control a specific consumer instance, it must takes effect at the consumer side, any provider received this override url should ignore;
+		// 2.If the ip is 0.0.0.0, this override url can be used on consumer, and also can be used on provider
+		if url.GetParam(constant.SideKey, "") == common.DubboRole[common.CONSUMER] {
+			localIP := common.GetLocalIp()
+			c.configureIfMatch(localIP, url)
+		} else {
+			c.configureIfMatch(constant.AnyHostValue, url)
+		}
+	}
+}
+
 func (c *overrideConfigurator) configureIfMatchInternal(url *common.URL) {
 	configApp := c.configuratorUrl.GetParam(constant.ApplicationKey, c.configuratorUrl.Username)
 	currentApp := url.GetParam(constant.ApplicationKey, url.Username)
 	if len(configApp) == 0 || constant.AnyValue == configApp || configApp == currentApp {
-		conditionKeys := gxset.NewSet()
-		conditionKeys.Add(constant.CategoryKey)
-		conditionKeys.Add(constant.CheckKey)
-		conditionKeys.Add(constant.EnabledKey)
-		conditionKeys.Add(constant.GroupKey)
-		conditionKeys.Add(constant.VersionKey)
-		conditionKeys.Add(constant.ApplicationKey)
-		conditionKeys.Add(constant.SideKey)
-		conditionKeys.Add(constant.ConfigVersionKey)
-		conditionKeys.Add(constant.CompatibleConfigKey)
+		conditionKeys := getConditionKeys()
 		returnUrl := false
 		c.configuratorUrl.RangeParams(func(k, _ string) bool {
 			value := c.configuratorUrl.GetParam(k, "")
@@ -115,21 +145,16 @@ func (c *overrideConfigurator) configureIfMatch(host string, url *common.URL) {
 	}
 }
 
-func (c *overrideConfigurator) configureDeprecated(url *common.URL) {
-	// If override url has port, means it is a provider address. We want to control a specific provider with this override url, it may take effect on the specific provider instance or on consumers holding this provider instance.
-	if c.configuratorUrl.Port != "0" {
-		if url.Port == c.configuratorUrl.Port {
-			c.configureIfMatch(url.Ip, url)
-		}
-	} else {
-		// override url don't have a port, means the ip override url specify is a consumer address or 0.0.0.0
-		// 1.If it is a consumer ip address, the intention is to control a specific consumer instance, it must takes effect at the consumer side, any provider received this override url should ignore;
-		// 2.If the ip is 0.0.0.0, this override url can be used on consumer, and also can be used on provider
-		if url.GetParam(constant.SideKey, "") == common.DubboRole[common.CONSUMER] {
-			localIP := common.GetLocalIp()
-			c.configureIfMatch(localIP, url)
-		} else {
-			c.configureIfMatch(constant.AnyHostValue, url)
-		}
-	}
+func getConditionKeys() *gxset.HashSet {
+	conditionKeys := gxset.NewSet()
+	conditionKeys.Add(constant.CategoryKey)
+	conditionKeys.Add(constant.CheckKey)
+	conditionKeys.Add(constant.EnabledKey)
+	conditionKeys.Add(constant.GroupKey)
+	conditionKeys.Add(constant.VersionKey)
+	conditionKeys.Add(constant.ApplicationKey)
+	conditionKeys.Add(constant.SideKey)
+	conditionKeys.Add(constant.ConfigVersionKey)
+	conditionKeys.Add(constant.CompatibleConfigKey)
+	return conditionKeys
 }

config_center/mock_dynamic_config.go

@@ -168,7 +168,7 @@ func (c *MockDynamicConfiguration) MockServiceConfigEvent() {
 		},
 	}
 	value, _ := yaml.Marshal(config)
-	key := "group*" + mockServiceName + ":1.0.0" + constant.ConfiguratorSuffix
+	key := mockServiceName + ":1.0.0:group" + constant.ConfiguratorSuffix
 	c.listener[key].Process(&ConfigChangeEvent{Key: key, Value: string(value), ConfigType: remoting.EventTypeAdd})
 }