support nacos registry

common/constant/key.go

@@ -84,3 +84,14 @@ const (
 	ProviderConfigPrefix  = "dubbo.provider."
 	ConsumerConfigPrefix  = "dubbo.consumer."
 )
+
+const (
+	NACOS_DEFAULT_ROLETYPE       = 3
+	NACOS_CACHE_DIR_KEY          = "cacheDir"
+	NACOS_LOG_DIR_KEY            = "logDir"
+	NACOS_ENDPOINT               = "endpoint"
+	NACOS_SERVICE_NAME_SEPARATOR = ":"
+	NACOS_CATEGORY_KEY           = "category"
+	NACOS_PROTOCOL_KEY           = "protocol"
+	NACOS_PATH_KEY               = "path"
+)

config/reference_config.go

@@ -157,6 +157,7 @@ func (refconfig *ReferenceConfig) getUrlMap() url.Values {
 	urlMap.Set(constant.RETRIES_KEY, strconv.FormatInt(refconfig.Retries, 10))
 	urlMap.Set(constant.GROUP_KEY, refconfig.Group)
 	urlMap.Set(constant.VERSION_KEY, refconfig.Version)
+	urlMap.Set(constant.ROLE_KEY, strconv.Itoa(common.CONSUMER))
 	//getty invoke async or sync
 	urlMap.Set(constant.ASYNC_KEY, strconv.FormatBool(refconfig.async))
 

config/registry_config.go

@@ -36,9 +36,10 @@ type RegistryConfig struct {
 	TimeoutStr string `yaml:"timeout" default:"5s" json:"timeout,omitempty" property:"timeout"` // unit: second
 	Group      string `yaml:"group" json:"group,omitempty" property:"group"`
 	//for registry
-	Address  string `yaml:"address" json:"address,omitempty" property:"address"`
-	Username string `yaml:"username" json:"username,omitempty" property:"username"`
-	Password string `yaml:"password" json:"password,omitempty"  property:"password"`
+	Address  string            `yaml:"address" json:"address,omitempty" property:"address"`
+	Username string            `yaml:"username" json:"username,omitempty" property:"username"`
+	Password string            `yaml:"password" json:"password,omitempty"  property:"password"`
+	Params   map[string]string `yaml:"params" json:"params,omitempty" property:"params"`
 }
 
 func (*RegistryConfig) Prefix() string {
@@ -109,6 +110,8 @@ func (regconfig *RegistryConfig) getUrlMap(roleType common.RoleType) url.Values
 	urlMap.Set(constant.ROLE_KEY, strconv.Itoa(int(roleType)))
 	urlMap.Set(constant.REGISTRY_KEY, regconfig.Protocol)
 	urlMap.Set(constant.REGISTRY_TIMEOUT_KEY, regconfig.TimeoutStr)
-
+	for k, v := range regconfig.Params {
+		urlMap.Set(k, v)
+	}
 	return urlMap
 }

config/service_config.go

@@ -163,6 +163,7 @@ func (srvconfig *ServiceConfig) getUrlMap() url.Values {
 	urlMap.Set(constant.RETRIES_KEY, strconv.FormatInt(srvconfig.Retries, 10))
 	urlMap.Set(constant.GROUP_KEY, srvconfig.Group)
 	urlMap.Set(constant.VERSION_KEY, srvconfig.Version)
+	urlMap.Set(constant.ROLE_KEY, strconv.Itoa(common.PROVIDER))
 	//application info
 	urlMap.Set(constant.APPLICATION_KEY, providerConfig.ApplicationConfig.Name)
 	urlMap.Set(constant.ORGANIZATION_KEY, providerConfig.ApplicationConfig.Organization)

go.mod

@@ -1,13 +1,26 @@
 module github.com/apache/dubbo-go
 
 require (
+	github.com/aliyun/alibaba-cloud-sdk-go v0.0.0-20190802083043-4cd0c391755e // indirect
 	github.com/apache/dubbo-go-hessian2 v1.2.5-0.20190731020727-1697039810c8
+	github.com/buger/jsonparser v0.0.0-20181115193947-bf1c66bbce23 // indirect
 	github.com/dubbogo/getty v1.2.2
 	github.com/dubbogo/gost v1.1.1
+	github.com/fastly/go-utils v0.0.0-20180712184237-d95a45783239 // indirect
+	github.com/go-errors/errors v1.0.1 // indirect
+	github.com/golang/mock v1.3.1 // indirect
+	github.com/jehiah/go-strftime v0.0.0-20171201141054-1d33003b3869 // indirect
+	github.com/jonboulle/clockwork v0.1.0 // indirect
+	github.com/lestrrat/go-envload v0.0.0-20180220120943-6ed08b54a570 // indirect
+	github.com/lestrrat/go-file-rotatelogs v0.0.0-20180223000712-d3151e2a480f // indirect
+	github.com/lestrrat/go-strftime v0.0.0-20180220042222-ba3bf9c1d042 // indirect
 	github.com/magiconair/properties v1.8.1
+	github.com/nacos-group/nacos-sdk-go v0.0.0-20190723125407-0242d42e3dbb
 	github.com/pkg/errors v0.8.1
 	github.com/samuel/go-zookeeper v0.0.0-20180130194729-c4fab1ac1bec
 	github.com/stretchr/testify v1.3.0
+	github.com/tebeka/strftime v0.1.3 // indirect
+	github.com/toolkits/concurrent v0.0.0-20150624120057-a4371d70e3e3 // indirect
 	go.uber.org/atomic v1.4.0
 	go.uber.org/zap v1.10.0
 	gopkg.in/yaml.v2 v2.2.2

go.sum

@@ -1,5 +1,11 @@
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+github.com/aliyun/aliyun-oss-go-sdk v0.0.0-20190307165228-86c17b95fcd5/go.mod h1:T/Aws4fEfogEE9v+HPhhw+CntffsBHJ8nXQCwKr0/g8=
 github.com/apache/dubbo-go-hessian2 v1.2.5-0.20190731020727-1697039810c8 h1:7zJlM+8bpCAUhv03TZnXkT4MLlLWng1s7An8CLuN73E=
 github.com/apache/dubbo-go-hessian2 v1.2.5-0.20190731020727-1697039810c8/go.mod h1:LWnndnrFXZmJLAzoyNAPNHSIJ1KOHVkTSsHgC3YYWlo=
+github.com/baiyubin/aliyun-sts-go-sdk v0.0.0-20180326062324-cfa1a18b161f/go.mod h1:AuiFmCCPBSrqvVMvuqFuk0qogytodnVFVSN5CeJB8Gc=
+github.com/buger/jsonparser v0.0.0-20181115193947-bf1c66bbce23 h1:D21IyuvjDCshj1/qq+pCNd3VZOAEI9jy6Bi131YlXgI=
+github.com/buger/jsonparser v0.0.0-20181115193947-bf1c66bbce23/go.mod h1:bbYlZJ7hK1yFx9hf58LP0zeX7UjIGs20ufpu3evjr+s=
 github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
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@@ -8,35 +14,90 @@ github.com/dubbogo/getty v1.2.2 h1:qDC9WXjxcs5NPvWZz2ruVKBKr2r1Jjm6i0Sq//CQwbE=
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+github.com/fastly/go-utils v0.0.0-20180712184237-d95a45783239/go.mod h1:Gdwt2ce0yfBxPvZrHkprdPPTTS3N5rwmLE8T22KBXlw=
+github.com/go-errors/errors v1.0.1 h1:LUHzmkK3GUKUrL/1gfBUxAHzcev3apQlezX/+O7ma6w=
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+gopkg.in/ini.v1 v1.42.0 h1:7N3gPTt50s8GuLortA00n8AqRTk75qOP98+mTPpgzRk=
+gopkg.in/ini.v1 v1.42.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
 gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=

registry/nacos/listener.go

@@ -0,0 +1,188 @@
+package nacos
+
+import (
+	"bytes"
+	"net/url"
+	"reflect"
+	"strconv"
+	"sync"
+)
+
+import (
+	"github.com/nacos-group/nacos-sdk-go/clients/naming_client"
+	"github.com/nacos-group/nacos-sdk-go/model"
+	"github.com/nacos-group/nacos-sdk-go/vo"
+	perrors "github.com/pkg/errors"
+)
+
+import (
+	"github.com/apache/dubbo-go/common"
+	"github.com/apache/dubbo-go/common/constant"
+	"github.com/apache/dubbo-go/common/logger"
+	"github.com/apache/dubbo-go/registry"
+	"github.com/apache/dubbo-go/remoting"
+)
+
+type nacosListener struct {
+	sync.Mutex
+	namingClient    naming_client.INamingClient
+	listenUrl       common.URL
+	events          chan *remoting.ConfigChangeEvent
+	hostMapInstance map[string]model.Instance
+	done            chan struct{}
+	subscribeParam  *vo.SubscribeParam
+}
+
+func NewNacosListener(url common.URL, namingClient naming_client.INamingClient) (*nacosListener, error) {
+	listener := &nacosListener{namingClient: namingClient, listenUrl: url, events: make(chan *remoting.ConfigChangeEvent, 32), hostMapInstance: map[string]model.Instance{}, done: make(chan struct{})}
+	err := listener.startListen()
+	return listener, err
+}
+
+func generateInstance(ss model.SubscribeService) model.Instance {
+	return model.Instance{
+		InstanceId:  ss.InstanceId,
+		Ip:          ss.Ip,
+		Port:        ss.Port,
+		ServiceName: ss.ServiceName,
+		Valid:       ss.Valid,
+		Enable:      ss.Enable,
+		Weight:      ss.Weight,
+		Metadata:    ss.Metadata,
+		ClusterName: ss.ClusterName,
+	}
+}
+
+func generateUrl(instance model.Instance) *common.URL {
+	if instance.Metadata == nil {
+		logger.Errorf("nacos instance metadata is empty,instance:%+v", instance)
+		return nil
+	}
+	path := instance.Metadata["path"]
+	myInterface := instance.Metadata["interface"]
+	if path == "" && myInterface == "" {
+		logger.Errorf("nacos instance metadata does not have  both path key and interface key,instance:%+v", instance)
+		return nil
+	}
+	if path == "" && myInterface != "" {
+		path = "/" + myInterface
+	}
+	protocol := instance.Metadata["protocol"]
+	if protocol == "" {
+		logger.Errorf("nacos instance metadata does not have protocol key,instance:%+v", instance)
+		return nil
+	}
+	urlMap := url.Values{}
+	for k, v := range instance.Metadata {
+		urlMap.Set(k, v)
+	}
+	return common.NewURLWithOptions(common.WithIp(instance.Ip), common.WithPort(strconv.Itoa(int(instance.Port))), common.WithProtocol(protocol), common.WithParams(urlMap), common.WithPath(path))
+}
+
+func (nl *nacosListener) Callback(services []model.SubscribeService, err error) {
+	if err != nil {
+		logger.Errorf("nacos subscribe callback error:%s ", err.Error())
+		return
+	}
+	nl.Lock()
+	defer nl.Unlock()
+	var addInstances []model.Instance
+	var delInstances []model.Instance
+	var updateInstances []model.Instance
+
+	newInstanceMap := map[string]model.Instance{}
+
+	for _, s := range services {
+		if !s.Enable || !s.Valid {
+			//实例不可以用
+			continue
+		}
+		host := s.Ip + ":" + strconv.Itoa(int(s.Port))
+		instance := generateInstance(s)
+		newInstanceMap[host] = instance
+		if old, ok := nl.hostMapInstance[host]; !ok {
+			//新增实例节点
+			addInstances = append(addInstances, instance)
+		} else {
+			//实例更新
+			if !reflect.DeepEqual(old, instance) {
+				updateInstances = append(updateInstances, instance)
+			}
+		}
+	}
+
+	//判断旧的实例是否在新实例列表中，不存在则代表实例已下线
+	for host, inst := range nl.hostMapInstance {
+		if _, ok := newInstanceMap[host]; !ok {
+			delInstances = append(delInstances, inst)
+		}
+	}
+
+	nl.hostMapInstance = newInstanceMap
+
+	for _, add := range addInstances {
+		newUrl := generateUrl(add)
+		if newUrl != nil {
+			nl.process(&remoting.ConfigChangeEvent{Value: *newUrl, ConfigType: remoting.EventTypeAdd})
+		}
+	}
+	for _, del := range delInstances {
+		newUrl := generateUrl(del)
+		if newUrl != nil {
+			nl.process(&remoting.ConfigChangeEvent{Value: *newUrl, ConfigType: remoting.EventTypeDel})
+		}
+	}
+
+	for _, update := range updateInstances {
+		newUrl := generateUrl(update)
+		if newUrl != nil {
+			nl.process(&remoting.ConfigChangeEvent{Value: *newUrl, ConfigType: remoting.EvnetTypeUpdate})
+		}
+	}
+}
+
+func getSubscribeName(url common.URL) string {
+	var buffer bytes.Buffer
+
+	buffer.Write([]byte(common.DubboNodes[common.PROVIDER]))
+	appendParam(&buffer, url, constant.INTERFACE_KEY)
+	appendParam(&buffer, url, constant.VERSION_KEY)
+	appendParam(&buffer, url, constant.GROUP_KEY)
+	return buffer.String()
+}
+
+func (nl *nacosListener) startListen() error {
+	if nl.namingClient == nil {
+		return perrors.New("nacos naming client stopped")
+	}
+	serviceName := getSubscribeName(nl.listenUrl)
+	nl.subscribeParam = &vo.SubscribeParam{ServiceName: serviceName, SubscribeCallback: nl.Callback}
+	return nl.namingClient.Subscribe(nl.subscribeParam)
+}
+
+func (nl *nacosListener) stopListen() error {
+	return nl.namingClient.Unsubscribe(nl.subscribeParam)
+}
+
+func (nl *nacosListener) process(configType *remoting.ConfigChangeEvent) {
+	nl.events <- configType
+}
+
+func (nl *nacosListener) Next() (*registry.ServiceEvent, error) {
+	for {
+		select {
+		case <-nl.done:
+			logger.Warnf("nacos listener is close!")
+			return nil, perrors.New("listener stopped")
+
+		case e := <-nl.events:
+			logger.Debugf("got nacos event %s", e)
+			return &registry.ServiceEvent{Action: e.ConfigType, Service: e.Value.(common.URL)}, nil
+		}
+	}
+}
+
+func (nl *nacosListener) Close() {
+	nl.stopListen()
+	close(nl.done)
+}