diff --git a/.gitignore b/.gitignore
index 3769d10aa12348464cb315fd336bf6b7234069cc..1e651f122beb2ff487b0ef897af6fa74be9bfd1d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -17,9 +17,9 @@ coverage.txt
 target/
 classes
 
-
-# Gopkg.lock
+# go mod, go test
 vendor/
+coverage.txt
 
 logs/
 .vscode/
diff --git a/LICENSE b/LICENSE
index e9ba4dde7f8a5c1cc402cbf3e1c644f3e5cf00d1..e76f9d9dd705daad997776153b1060f5bf8c2a1d 100644
--- a/LICENSE
+++ b/LICENSE
@@ -176,7 +176,6 @@
 
    END OF TERMS AND CONDITIONS
 
-
    Licensed 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
diff --git a/common/url.go b/common/url.go
index fb31129ed0fc1d695d2552901ffa1ca8737fce39..6431ee12995a95848c6f3369c490bc5dbf07bb6b 100644
--- a/common/url.go
+++ b/common/url.go
@@ -111,16 +111,19 @@ func WithParams(params url.Values) option {
 		url.Params = params
 	}
 }
+
 func WithParamsValue(key, val string) option {
 	return func(url *URL) {
 		url.Params.Set(key, val)
 	}
 }
+
 func WithProtocol(proto string) option {
 	return func(url *URL) {
 		url.Protocol = proto
 	}
 }
+
 func WithIp(ip string) option {
 	return func(url *URL) {
 		url.Ip = ip
@@ -144,6 +147,7 @@ func WithLocation(location string) option {
 		url.Location = location
 	}
 }
+
 func NewURLWithOptions(opts ...option) *URL {
 	url := &URL{}
 	for _, opt := range opts {
diff --git a/config/consumer_config.go b/config/consumer_config.go
index 737339a0ad195201327eb4fac3445b18eb4bbf26..55082ffe41ad0a38ccbb6c2e788f0b609a8b4ef8 100644
--- a/config/consumer_config.go
+++ b/config/consumer_config.go
@@ -52,6 +52,7 @@ type ConsumerConfig struct {
 	Registries   map[string]*RegistryConfig  `yaml:"registries" json:"registries,omitempty" property:"registries"`
 	References   map[string]*ReferenceConfig `yaml:"references" json:"references,omitempty" property:"references"`
 	ProtocolConf interface{}                 `yaml:"protocol_conf" json:"protocol_conf,omitempty" property:"protocol_conf"`
+	FilterConf   interface{}                 `yaml:"filter_conf" json:"filter_conf,omitempty" property:"filter_conf" `
 }
 
 func (*ConsumerConfig) Prefix() string {
diff --git a/config/provider_config.go b/config/provider_config.go
index a504eea237dc47f66c4ed27d334ce5eea5c87d45..db8abaf73e9609b3f3ac1db68e89a3d66068659b 100644
--- a/config/provider_config.go
+++ b/config/provider_config.go
@@ -46,6 +46,7 @@ type ProviderConfig struct {
 	Services          map[string]*ServiceConfig  `yaml:"services" json:"services,omitempty" property:"services"`
 	Protocols         map[string]*ProtocolConfig `yaml:"protocols" json:"protocols,omitempty" property:"protocols"`
 	ProtocolConf      interface{}                `yaml:"protocol_conf" json:"protocol_conf,omitempty" property:"protocol_conf" `
+	FilterConf        interface{}                `yaml:"filter_conf" json:"filter_conf,omitempty" property:"filter_conf" `
 }
 
 func (*ProviderConfig) Prefix() string {
diff --git a/config/reference_config_test.go b/config/reference_config_test.go
index 774fece29f5158b6840b3384b5c56846cc4da37b..d36fa04d7461cfb6cd4c9d2d739e9863355df077 100644
--- a/config/reference_config_test.go
+++ b/config/reference_config_test.go
@@ -20,8 +20,6 @@ package config
 import (
 	"sync"
 	"testing"
-
-	"github.com/apache/dubbo-go/common/constant"
 )
 
 import (
@@ -31,6 +29,7 @@ import (
 import (
 	"github.com/apache/dubbo-go/cluster/cluster_impl"
 	"github.com/apache/dubbo-go/common"
+	"github.com/apache/dubbo-go/common/constant"
 	"github.com/apache/dubbo-go/common/extension"
 	"github.com/apache/dubbo-go/protocol"
 )
diff --git a/examples/consul/README.md b/examples/consul/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..bb475526e8c1ccc6c9cc2365caa2a06b2f69d997
--- /dev/null
+++ b/examples/consul/README.md
@@ -0,0 +1,44 @@
+# consul
+
+Examples for consul registry. Before running examples below, make sure that consul has been started.
+
+## requirement
+
+- consul
+- go 1.12
+- java 8
+- maven 3.6.1
+
+## go-server
+
+```
+$ cd examples/consul/go-server
+$ export CONF_PROVIDER_FILE_PATH="config/server.yml"
+$ export APP_LOG_CONF_FILE="config/log.yml"
+$ go run .
+```
+
+## go-client
+
+```
+$ cd examples/consul/go-client
+$ export CONF_CONSUMER_FILE_PATH="config/client.yml"
+$ export APP_LOG_CONF_FILE="config/log.yml"
+$ go run .
+```
+
+## java-server
+
+```
+$ cd examples/consul/java-server
+$ mvn clean package
+$ java -jar target/java-server-1.0.0.jar
+```
+
+## java-client
+
+```
+$ cd examples/consul/java-client
+$ mvn clean package
+$ java -jar target/java-client-1.0.0.jar
+```
\ No newline at end of file
diff --git a/examples/consul/go-client/client.go b/examples/consul/go-client/client.go
new file mode 100644
index 0000000000000000000000000000000000000000..73a9bc9c3cddb7fc23cae2cd8d776bc68ef26af8
--- /dev/null
+++ b/examples/consul/go-client/client.go
@@ -0,0 +1,43 @@
+/*
+ * 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 main
+
+import (
+	"fmt"
+)
+
+import (
+	_ "github.com/apache/dubbo-go/cluster/cluster_impl"
+	_ "github.com/apache/dubbo-go/cluster/loadbalance"
+	_ "github.com/apache/dubbo-go/common/proxy/proxy_factory"
+	"github.com/apache/dubbo-go/config"
+	_ "github.com/apache/dubbo-go/filter/impl"
+	_ "github.com/apache/dubbo-go/protocol/dubbo"
+	_ "github.com/apache/dubbo-go/registry/consul"
+	_ "github.com/apache/dubbo-go/registry/protocol"
+)
+
+func main() {
+	config.Load()
+
+	message, err := dubboService.SayHello([]interface{}{"world"})
+	if err != nil {
+		panic(err)
+	}
+	fmt.Println(message)
+}
diff --git a/examples/consul/go-client/config/client.yml b/examples/consul/go-client/config/client.yml
new file mode 100644
index 0000000000000000000000000000000000000000..8a7458c384bc80b5096aa1b3496f9f1430753a07
--- /dev/null
+++ b/examples/consul/go-client/config/client.yml
@@ -0,0 +1,52 @@
+application_config:
+  organization : "ikurento.com"
+  name  : "BDTService"
+  module : "dubbogo user-info client"
+  version : "0.0.1"
+  owner : "ZX"
+  environment : "test"
+
+registries :
+  "consul":
+    protocol: "consul"
+    timeout	: "3s"
+    address: "127.0.0.1:8500"
+    username: ""
+    password: ""
+
+references:
+  "DubboService":
+    protocol : "dubbo"
+    interface : "dubbo.DubboService"
+    cluster: "failover"
+    methods :
+      - name: "SayHello"
+        retries: 3
+
+protocol_conf:
+  dubbo:
+    reconnect_interval: 0
+    connection_number: 2
+    heartbeat_period: "5s"
+    session_timeout: "20s"
+    fail_fast_timeout: "5s"
+    pool_size: 64
+    pool_ttl: 600
+    getty_session_param:
+      compress_encoding: false
+      tcp_no_delay: true
+      tcp_keep_alive: true
+      keep_alive_period: "120s"
+      tcp_r_buf_size: 262144
+      tcp_w_buf_size: 65536
+      pkg_rq_size: 1024
+      pkg_wq_size: 512
+      tcp_read_timeout: "1s"
+      tcp_write_timeout: "5s"
+      wait_timeout: "1s"
+      max_msg_len: 10240
+      session_name: "client"
+
+check: true
+request_timeout : "3s"
+connect_timeout : "3s"
diff --git a/examples/consul/go-client/config/log.yml b/examples/consul/go-client/config/log.yml
new file mode 100644
index 0000000000000000000000000000000000000000..baee0b7248484e425f88f35ab128212c931ff85e
--- /dev/null
+++ b/examples/consul/go-client/config/log.yml
@@ -0,0 +1,28 @@
+
+level: "info"
+development: false
+disableCaller: false
+disableStacktrace: true
+sampling:
+encoding: "console"
+
+# encoder
+encoderConfig:
+  messageKey: "message"
+  levelKey: "level"
+  timeKey: "time"
+  nameKey: "logger"
+  callerKey: "caller"
+  stacktraceKey: "stacktrace"
+  lineEnding: ""
+  levelEncoder: "capitalColor"
+  timeEncoder: "iso8601"
+  durationEncoder: "seconds"
+  callerEncoder: "short"
+  nameEncoder: ""
+
+outputPaths:
+  - "stderr"
+errorOutputPaths:
+  - "stderr"
+initialFields:
diff --git a/examples/consul/go-client/service.go b/examples/consul/go-client/service.go
new file mode 100644
index 0000000000000000000000000000000000000000..0f7cca59857f0b66e8fab51c0ec95e3adfead44a
--- /dev/null
+++ b/examples/consul/go-client/service.go
@@ -0,0 +1,36 @@
+/*
+ * 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 main
+
+import (
+	"github.com/apache/dubbo-go/config"
+)
+
+var dubboService = new(DubboService)
+
+func init() {
+	config.SetConsumerService(dubboService)
+}
+
+type DubboService struct {
+	SayHello func(req interface{}) (string, error)
+}
+
+func (s *DubboService) Reference() string {
+	return "DubboService"
+}
diff --git a/examples/consul/go-server/config/log.yml b/examples/consul/go-server/config/log.yml
new file mode 100644
index 0000000000000000000000000000000000000000..baee0b7248484e425f88f35ab128212c931ff85e
--- /dev/null
+++ b/examples/consul/go-server/config/log.yml
@@ -0,0 +1,28 @@
+
+level: "info"
+development: false
+disableCaller: false
+disableStacktrace: true
+sampling:
+encoding: "console"
+
+# encoder
+encoderConfig:
+  messageKey: "message"
+  levelKey: "level"
+  timeKey: "time"
+  nameKey: "logger"
+  callerKey: "caller"
+  stacktraceKey: "stacktrace"
+  lineEnding: ""
+  levelEncoder: "capitalColor"
+  timeEncoder: "iso8601"
+  durationEncoder: "seconds"
+  callerEncoder: "short"
+  nameEncoder: ""
+
+outputPaths:
+  - "stderr"
+errorOutputPaths:
+  - "stderr"
+initialFields:
diff --git a/examples/consul/go-server/config/server.yml b/examples/consul/go-server/config/server.yml
new file mode 100644
index 0000000000000000000000000000000000000000..c12800e68d1c32793cb6860561f3240f196a6a78
--- /dev/null
+++ b/examples/consul/go-server/config/server.yml
@@ -0,0 +1,52 @@
+application_config:
+  organization : "ikurento.com"
+  name : "BDTService"
+  module : "dubbogo user-info server"
+  version : "0.0.1"
+  owner : "ZX"
+  environment : "test"
+
+registries :
+  "consul":
+    protocol: "consul"
+    timeout	: "3s"
+    address: "127.0.0.1:8500"
+    username: ""
+    password: ""
+
+services:
+  "DubboService":
+    protocol : "dubbo"
+    interface : "dubbo.DubboService"
+    loadbalance: "random"
+    warmup: "100"
+    cluster: "failover"
+    methods:
+      - name: "SayHello"
+        retries: 1
+        loadbalance: "random"
+
+protocols:
+  "dubbo1":
+      name: "dubbo"
+      port: 20000
+
+protocol_conf:
+  dubbo:
+    session_number: 700
+    fail_fast_timeout: "5s"
+    session_timeout: "20s"
+    getty_session_param:
+      compress_encoding: false
+      tcp_no_delay: true
+      tcp_keep_alive: true
+      keep_alive_period: "120s"
+      tcp_r_buf_size: 262144
+      tcp_w_buf_size: 65536
+      pkg_rq_size: 1024
+      pkg_wq_size: 512
+      tcp_read_timeout: "1s"
+      tcp_write_timeout: "5s"
+      wait_timeout: "1s"
+      max_msg_len: 1024
+      session_name: "server"
diff --git a/examples/consul/go-server/server.go b/examples/consul/go-server/server.go
new file mode 100644
index 0000000000000000000000000000000000000000..798fe7c7b0632bf7d366d4bf500846fd6ced73e9
--- /dev/null
+++ b/examples/consul/go-server/server.go
@@ -0,0 +1,70 @@
+/*
+ * 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 main
+
+import (
+	"fmt"
+	"os"
+	"os/signal"
+	"syscall"
+	"time"
+)
+
+import (
+	_ "github.com/apache/dubbo-go/cluster/cluster_impl"
+	_ "github.com/apache/dubbo-go/cluster/loadbalance"
+	"github.com/apache/dubbo-go/common/logger"
+	_ "github.com/apache/dubbo-go/common/proxy/proxy_factory"
+	"github.com/apache/dubbo-go/config"
+	_ "github.com/apache/dubbo-go/filter/impl"
+	_ "github.com/apache/dubbo-go/protocol/dubbo"
+	_ "github.com/apache/dubbo-go/registry/consul"
+	_ "github.com/apache/dubbo-go/registry/protocol"
+)
+
+var (
+	survivalTimeout = int(3e9)
+)
+
+func main() {
+	config.Load()
+	initSignal()
+}
+
+func initSignal() {
+	signals := make(chan os.Signal, 1)
+	// It is not possible to block SIGKILL or syscall.SIGSTOP
+	signal.Notify(signals, os.Interrupt, os.Kill, syscall.SIGHUP, syscall.SIGQUIT, syscall.SIGTERM, syscall.SIGINT)
+	for {
+		sig := <-signals
+		logger.Infof("get signal %s", sig.String())
+		switch sig {
+		case syscall.SIGHUP:
+			// reload()
+		default:
+			go time.AfterFunc(time.Duration(float64(survivalTimeout)*float64(time.Second)), func() {
+				logger.Warnf("app exit now by force...")
+				os.Exit(1)
+			})
+
+			// The program exits normally or timeout forcibly exits.
+			fmt.Println("provider app exit now...")
+			return
+		}
+	}
+}
diff --git a/examples/consul/go-server/service.go b/examples/consul/go-server/service.go
new file mode 100644
index 0000000000000000000000000000000000000000..7c08ec99b93ce1d383fad3e717b4fdf2da0b5d6c
--- /dev/null
+++ b/examples/consul/go-server/service.go
@@ -0,0 +1,36 @@
+/*
+ * 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 main
+
+import (
+	"github.com/apache/dubbo-go/config"
+)
+
+func init() {
+	config.SetProviderService(new(DubboService))
+}
+
+type DubboService struct{}
+
+func (s *DubboService) SayHello(message string) (string, error) {
+	return "hello " + message, nil
+}
+
+func (s *DubboService) Reference() string {
+	return "DubboService"
+}
diff --git a/examples/consul/java-client/.gitignore b/examples/consul/java-client/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..0bbcf418ec53691d6895a6ea8eeb56a264f2b735
--- /dev/null
+++ b/examples/consul/java-client/.gitignore
@@ -0,0 +1,7 @@
+.idea
+.gradle
+*.iml
+dependency-reduced-pom.xml
+out/
+build/
+target/
\ No newline at end of file
diff --git a/examples/consul/java-client/pom.xml b/examples/consul/java-client/pom.xml
new file mode 100644
index 0000000000000000000000000000000000000000..3e54e77d492416b439c8fe441dae492eb019229a
--- /dev/null
+++ b/examples/consul/java-client/pom.xml
@@ -0,0 +1,88 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  Licensed 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.
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>consul</groupId>
+    <artifactId>java-client</artifactId>
+    <version>1.0.0</version>
+
+    <properties>
+        <maven.compiler.source>1.8</maven.compiler.source>
+        <maven.compiler.target>1.8</maven.compiler.target>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>log4j</groupId>
+            <artifactId>log4j</artifactId>
+            <version>1.2.17</version>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.dubbo</groupId>
+            <artifactId>dubbo</artifactId>
+            <version>2.7.1</version>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.ecwid.consul</groupId>
+            <artifactId>consul-api</artifactId>
+            <version>1.4.2</version>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>commons-logging</groupId>
+            <artifactId>commons-logging</artifactId>
+            <version>1.2</version>
+            <scope>compile</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-shade-plugin</artifactId>
+                <version>3.1.1</version>
+                <executions>
+                    <execution>
+                        <phase>package</phase>
+                        <goals>
+                            <goal>shade</goal>
+                        </goals>
+                        <configuration>
+                            <transformers>
+                                <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
+                                    <mainClass>dubbo.client.Main</mainClass>
+                                </transformer>
+                            </transformers>
+                            <filters>
+                                <filter>
+                                    <artifact>*:*</artifact>
+                                    <excludes>
+                                        <exclude>META-INF/*.SF</exclude>
+                                        <exclude>META-INF/*.DSA</exclude>
+                                        <exclude>META-INF/*.RSA</exclude>
+                                    </excludes>
+                                </filter>
+                            </filters>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+</project>
\ No newline at end of file
diff --git a/examples/consul/java-client/src/main/java/dubbo/DubboService.java b/examples/consul/java-client/src/main/java/dubbo/DubboService.java
new file mode 100644
index 0000000000000000000000000000000000000000..4eb2d8c10ae76a3f15ab2619cc369ff3564b97af
--- /dev/null
+++ b/examples/consul/java-client/src/main/java/dubbo/DubboService.java
@@ -0,0 +1,22 @@
+/*
+ * 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 dubbo;
+
+public interface DubboService {
+    String SayHello(String message);
+}
diff --git a/examples/consul/java-client/src/main/java/dubbo/client/Main.java b/examples/consul/java-client/src/main/java/dubbo/client/Main.java
new file mode 100644
index 0000000000000000000000000000000000000000..d9880bf2c4625dbebe0225502ebf42f98b36d896
--- /dev/null
+++ b/examples/consul/java-client/src/main/java/dubbo/client/Main.java
@@ -0,0 +1,43 @@
+/*
+ * 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 dubbo.client;
+
+import org.apache.dubbo.config.ApplicationConfig;
+import org.apache.dubbo.config.ReferenceConfig;
+import org.apache.dubbo.config.RegistryConfig;
+import dubbo.DubboService;
+
+public class Main {
+    public static void main(String[] args) {
+        ApplicationConfig applicationConfig = new ApplicationConfig();
+        applicationConfig.setName("java-client");
+        applicationConfig.setQosPort(33333);
+
+        RegistryConfig registryConfig = new RegistryConfig();
+        registryConfig.setAddress("consul://127.0.0.1:8500");
+
+        ReferenceConfig<DubboService> referenceConfig = new ReferenceConfig<>();
+        referenceConfig.setApplication(applicationConfig);
+        referenceConfig.setRegistry(registryConfig);
+        referenceConfig.setInterface(DubboService.class);
+
+        DubboService dubboService = referenceConfig.get();
+        System.out.println(dubboService.SayHello("world"));
+    }
+}
diff --git a/examples/consul/java-client/src/main/resources/log4j.properties b/examples/consul/java-client/src/main/resources/log4j.properties
new file mode 100644
index 0000000000000000000000000000000000000000..097fa4309c1811750de0164bfaf2ebf354615d57
--- /dev/null
+++ b/examples/consul/java-client/src/main/resources/log4j.properties
@@ -0,0 +1,4 @@
+log4j.appender.Stdout=org.apache.log4j.ConsoleAppender
+log4j.appender.Stdout.layout=org.apache.log4j.PatternLayout
+log4j.appender.Stdout.layout.conversionPattern=[%p] %c | %m\n
+log4j.rootLogger=INFO,Stdout
\ No newline at end of file
diff --git a/examples/consul/java-server/.gitignore b/examples/consul/java-server/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..0bbcf418ec53691d6895a6ea8eeb56a264f2b735
--- /dev/null
+++ b/examples/consul/java-server/.gitignore
@@ -0,0 +1,7 @@
+.idea
+.gradle
+*.iml
+dependency-reduced-pom.xml
+out/
+build/
+target/
\ No newline at end of file
diff --git a/examples/consul/java-server/pom.xml b/examples/consul/java-server/pom.xml
new file mode 100644
index 0000000000000000000000000000000000000000..07a1e5bc414a6a5d3688ff9ed2624f34d3622d59
--- /dev/null
+++ b/examples/consul/java-server/pom.xml
@@ -0,0 +1,89 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  Licensed 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.
+-->
+
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>consul</groupId>
+    <artifactId>java-server</artifactId>
+    <version>1.0.0</version>
+
+    <properties>
+        <maven.compiler.source>1.8</maven.compiler.source>
+        <maven.compiler.target>1.8</maven.compiler.target>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>log4j</groupId>
+            <artifactId>log4j</artifactId>
+            <version>1.2.17</version>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.dubbo</groupId>
+            <artifactId>dubbo</artifactId>
+            <version>2.7.1</version>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.ecwid.consul</groupId>
+            <artifactId>consul-api</artifactId>
+            <version>1.4.2</version>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>commons-logging</groupId>
+            <artifactId>commons-logging</artifactId>
+            <version>1.2</version>
+            <scope>compile</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-shade-plugin</artifactId>
+                <version>3.1.1</version>
+                <executions>
+                    <execution>
+                        <phase>package</phase>
+                        <goals>
+                            <goal>shade</goal>
+                        </goals>
+                        <configuration>
+                            <transformers>
+                                <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
+                                    <mainClass>dubbo.server.Main</mainClass>
+                                </transformer>
+                            </transformers>
+                            <filters>
+                                <filter>
+                                    <artifact>*:*</artifact>
+                                    <excludes>
+                                        <exclude>META-INF/*.SF</exclude>
+                                        <exclude>META-INF/*.DSA</exclude>
+                                        <exclude>META-INF/*.RSA</exclude>
+                                    </excludes>
+                                </filter>
+                            </filters>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+</project>
\ No newline at end of file
diff --git a/examples/consul/java-server/src/main/java/dubbo/DubboService.java b/examples/consul/java-server/src/main/java/dubbo/DubboService.java
new file mode 100644
index 0000000000000000000000000000000000000000..de6b5b53355d72f678355de5773aeb1f00ec1751
--- /dev/null
+++ b/examples/consul/java-server/src/main/java/dubbo/DubboService.java
@@ -0,0 +1,5 @@
+package dubbo;
+
+public interface DubboService {
+    String SayHello(String message);
+}
diff --git a/examples/consul/java-server/src/main/java/dubbo/server/Impl/DubboServiceImpl.java b/examples/consul/java-server/src/main/java/dubbo/server/Impl/DubboServiceImpl.java
new file mode 100644
index 0000000000000000000000000000000000000000..61c5e9039c1eaaad0dcebaa0c43653eb23f2f92b
--- /dev/null
+++ b/examples/consul/java-server/src/main/java/dubbo/server/Impl/DubboServiceImpl.java
@@ -0,0 +1,11 @@
+package dubbo.server.Impl;
+
+import dubbo.DubboService;
+
+public class DubboServiceImpl implements DubboService {
+
+    @Override
+    public String SayHello(String message) {
+        return "hello " + message;
+    }
+}
diff --git a/examples/consul/java-server/src/main/java/dubbo/server/Main.java b/examples/consul/java-server/src/main/java/dubbo/server/Main.java
new file mode 100644
index 0000000000000000000000000000000000000000..91c7b0b912f4fb27e6d108d2975bcd8a6d08f4a4
--- /dev/null
+++ b/examples/consul/java-server/src/main/java/dubbo/server/Main.java
@@ -0,0 +1,53 @@
+/*
+ * 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 dubbo.server;
+
+import org.apache.dubbo.config.ApplicationConfig;
+import org.apache.dubbo.config.ProtocolConfig;
+import org.apache.dubbo.config.RegistryConfig;
+import org.apache.dubbo.config.ServiceConfig;
+import dubbo.DubboService;
+import dubbo.server.Impl.DubboServiceImpl;
+
+import java.io.IOException;
+
+public class Main {
+    public static void main(String[] args) throws IOException {
+        ApplicationConfig applicationConfig = new ApplicationConfig();
+        applicationConfig.setName("java-server");
+
+        RegistryConfig registryConfig = new RegistryConfig();
+        registryConfig.setAddress("consul://127.0.0.1:8500");
+
+        ProtocolConfig protocolConfig = new ProtocolConfig();
+        protocolConfig.setName("dubbo");
+        protocolConfig.setHost("127.0.0.1");
+        protocolConfig.setPort(12345);
+
+        ServiceConfig<DubboService> serviceConfig = new ServiceConfig<>();
+        serviceConfig.setApplication(applicationConfig);
+        serviceConfig.setRegistry(registryConfig);
+        serviceConfig.setProtocol(protocolConfig);
+        serviceConfig.setInterface(DubboService.class);
+        serviceConfig.setRef(new DubboServiceImpl());
+        serviceConfig.export();
+
+        System.in.read();
+    }
+}
diff --git a/examples/consul/java-server/src/main/resources/log4j.properties b/examples/consul/java-server/src/main/resources/log4j.properties
new file mode 100644
index 0000000000000000000000000000000000000000..097fa4309c1811750de0164bfaf2ebf354615d57
--- /dev/null
+++ b/examples/consul/java-server/src/main/resources/log4j.properties
@@ -0,0 +1,4 @@
+log4j.appender.Stdout=org.apache.log4j.ConsoleAppender
+log4j.appender.Stdout.layout=org.apache.log4j.PatternLayout
+log4j.appender.Stdout.layout.conversionPattern=[%p] %c | %m\n
+log4j.rootLogger=INFO,Stdout
\ No newline at end of file
diff --git a/examples/general/dubbo/java-client/src/main/java/com/ikurento/user/UserProvider.java b/examples/general/dubbo/java-client/src/main/java/com/ikurento/user/UserProvider.java
index 140dff072e88cf54f6a87698f026f9875025a9b5..a330d9829aef7efff15a3d9ce004b22843890705 100644
--- a/examples/general/dubbo/java-client/src/main/java/com/ikurento/user/UserProvider.java
+++ b/examples/general/dubbo/java-client/src/main/java/com/ikurento/user/UserProvider.java
@@ -11,6 +11,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package com.ikurento.user;
 
 import java.util.List;
diff --git a/examples/general/dubbo/java-client/src/main/resources/META-INF/spring/dubbo.consumer.xml b/examples/general/dubbo/java-client/src/main/resources/META-INF/spring/dubbo.consumer.xml
index 9dfd6850c1786379861638517b08fb1a81beea7e..67c6264ea925bb60e38241f0a51e1ce7842b1d90 100644
--- a/examples/general/dubbo/java-client/src/main/resources/META-INF/spring/dubbo.consumer.xml
+++ b/examples/general/dubbo/java-client/src/main/resources/META-INF/spring/dubbo.consumer.xml
@@ -12,6 +12,8 @@
   See the License for the specific language governing permissions and
   limitations under the License.
 -->
+
+
 <beans xmlns="http://www.springframework.org/schema/beans"
 	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 	xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
diff --git a/examples/general/dubbo/java-client/src/main/resources/META-INF/spring/service.xml b/examples/general/dubbo/java-client/src/main/resources/META-INF/spring/service.xml
index 854d5135a5065f58ec1fdf32c215ca516bd4aee9..041d7c336558c9ea662ed2db3a3b9301c9eec4a2 100644
--- a/examples/general/dubbo/java-client/src/main/resources/META-INF/spring/service.xml
+++ b/examples/general/dubbo/java-client/src/main/resources/META-INF/spring/service.xml
@@ -12,6 +12,7 @@
   See the License for the specific language governing permissions and
   limitations under the License.
 -->
+
 <beans xmlns="http://www.springframework.org/schema/beans"
 	xmlns:context="http://www.springframework.org/schema/context"
 	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
diff --git a/examples/general/dubbo/java-server/pom.xml b/examples/general/dubbo/java-server/pom.xml
index 8c1322860245e874e06ee33584cb6b4d08a68058..9b811e9f78a3db3cb742ce5870b5d68b55bd681c 100644
--- a/examples/general/dubbo/java-server/pom.xml
+++ b/examples/general/dubbo/java-server/pom.xml
@@ -13,7 +13,6 @@
   limitations under the License.
 -->
 
-
 <project xmlns="http://maven.apache.org/POM/4.0.0"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
diff --git a/examples/general/dubbo/java-server/src/main/java/com/ikurento/user/UserProviderImpl.java b/examples/general/dubbo/java-server/src/main/java/com/ikurento/user/UserProviderImpl.java
index 6efa582d5f0aee9013fdbc2270b547f69322d20c..e2068f92350ae1cd2e4c75cd16aad5f2d9d52994 100644
--- a/examples/general/dubbo/java-server/src/main/java/com/ikurento/user/UserProviderImpl.java
+++ b/examples/general/dubbo/java-server/src/main/java/com/ikurento/user/UserProviderImpl.java
@@ -17,7 +17,6 @@
 
 package com.ikurento.user;
 
-
 import java.util.HashMap;
 import java.util.List;
 import java.util.ArrayList;
diff --git a/examples/generic/go-client/assembly/bin/load.sh b/examples/generic/go-client/assembly/bin/load.sh
index ffa240b29d9e76761a151e7462092b86908de6f6..176a202ab8810701ac8208db0ab764f2e215d71d 100644
--- a/examples/generic/go-client/assembly/bin/load.sh
+++ b/examples/generic/go-client/assembly/bin/load.sh
@@ -15,7 +15,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-
 APP_NAME="APPLICATION_NAME"
 APP_ARGS=""
 SLEEP_INTERVAL=5
diff --git a/examples/generic/go-client/assembly/common/app.properties b/examples/generic/go-client/assembly/common/app.properties
index e10868f4d292765c7eeb2e8bb8b1684a44f56a14..97eee47429e978927a03c3fb2876b3d40bfa4269 100644
--- a/examples/generic/go-client/assembly/common/app.properties
+++ b/examples/generic/go-client/assembly/common/app.properties
@@ -1,3 +1,4 @@
+#!/usr/bin/env bash
 #
 # Licensed to the Apache Software Foundation (ASF) under one or more
 # contributor license agreements.  See the NOTICE file distributed with
diff --git a/examples/generic/go-client/assembly/common/build.sh b/examples/generic/go-client/assembly/common/build.sh
index c9a9e87c73ef45195d6f70acccf9374ee6cb906b..0f0b22f5f42a01fffa48efa4cae5d953fb44d7ed 100644
--- a/examples/generic/go-client/assembly/common/build.sh
+++ b/examples/generic/go-client/assembly/common/build.sh
@@ -15,6 +15,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+
 rm -rf target/
 
 PROJECT_HOME=`pwd`
diff --git a/examples/generic/go-client/assembly/linux/dev.sh b/examples/generic/go-client/assembly/linux/dev.sh
index eada737c8d0939d4237a6d218fc2a07efdbff381..4f659a7c383853b45b7d80d516c10e0c51e6cede 100644
--- a/examples/generic/go-client/assembly/linux/dev.sh
+++ b/examples/generic/go-client/assembly/linux/dev.sh
@@ -16,7 +16,6 @@
 # limitations under the License.
 
 
-
 set -e
 
 export GOOS=linux
diff --git a/examples/generic/go-client/assembly/mac/dev.sh b/examples/generic/go-client/assembly/mac/dev.sh
index c8284769909e62f0142c29e3a63177bf2826593f..0d21ec4aab54676837e0a909467cbf56f6bfc275 100644
--- a/examples/generic/go-client/assembly/mac/dev.sh
+++ b/examples/generic/go-client/assembly/mac/dev.sh
@@ -16,7 +16,6 @@
 # limitations under the License.
 
 
-
 set -e
 
 export GOOS=darwin
diff --git a/examples/generic/go-client/assembly/mac/test.sh b/examples/generic/go-client/assembly/mac/test.sh
index a7853f5e2d51df8e3e9509621952c44bca0d1a2d..2fac89d0f6b9feb95b79359b38078135f15d90e3 100644
--- a/examples/generic/go-client/assembly/mac/test.sh
+++ b/examples/generic/go-client/assembly/mac/test.sh
@@ -16,6 +16,7 @@
 # limitations under the License.
 
 
+
 set -e
 
 export GOOS=darwin
diff --git a/examples/generic/java-server/script/debug.sh b/examples/generic/java-server/script/debug.sh
index 851957ade66f7eb492f9be278bf0b6f98eed729a..1038cd7ff7f65a2a07ce21414732ab891aef67ff 100644
--- a/examples/generic/java-server/script/debug.sh
+++ b/examples/generic/java-server/script/debug.sh
@@ -15,7 +15,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-
 # jdb -classpath /Users/alex/tmp/us/conf:/Users/alex/tmp/us/lib/*:/Users/alex/test/java/dubbo/2.5.4/dubbo-remoting/dubbo-remoting-api/src/main/java/ com.alibaba.dubbo.container.Main
 jdb -classpath /Users/alex/tmp/us/conf:/Users/alex/tmp/us/lib/* -sourcepath /Users/alex/test/java/dubbo/2.5.4/dubbo-remoting/dubbo-remoting-api/src/main/java/:/Users/alex/tmp/java-server/src/main/java com.alibaba.dubbo.container.Main
 # jdb stop at com.alibaba.dubbo.remoting.exchange.codec.ExchangeCodec:76
diff --git a/examples/generic/java-server/src/main/resources/META-INF/spring/dubbo.provider.xml b/examples/generic/java-server/src/main/resources/META-INF/spring/dubbo.provider.xml
index b3c3bbf7568a33d1001a6f2dcaa96604b91013ef..4ebe64b937bfcccf0ee97c948c76329272a9cca5 100644
--- a/examples/generic/java-server/src/main/resources/META-INF/spring/dubbo.provider.xml
+++ b/examples/generic/java-server/src/main/resources/META-INF/spring/dubbo.provider.xml
@@ -12,6 +12,7 @@
   See the License for the specific language governing permissions and
   limitations under the License.
 -->
+
 <beans xmlns="http://www.springframework.org/schema/beans"
 	   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 	   xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
diff --git a/examples/helloworld/dubbo/go-client/assembly/bin/load.sh b/examples/helloworld/dubbo/go-client/assembly/bin/load.sh
index ffa240b29d9e76761a151e7462092b86908de6f6..176a202ab8810701ac8208db0ab764f2e215d71d 100644
--- a/examples/helloworld/dubbo/go-client/assembly/bin/load.sh
+++ b/examples/helloworld/dubbo/go-client/assembly/bin/load.sh
@@ -15,7 +15,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-
 APP_NAME="APPLICATION_NAME"
 APP_ARGS=""
 SLEEP_INTERVAL=5
diff --git a/examples/helloworld/dubbo/go-client/assembly/common/app.properties b/examples/helloworld/dubbo/go-client/assembly/common/app.properties
index e10868f4d292765c7eeb2e8bb8b1684a44f56a14..97eee47429e978927a03c3fb2876b3d40bfa4269 100644
--- a/examples/helloworld/dubbo/go-client/assembly/common/app.properties
+++ b/examples/helloworld/dubbo/go-client/assembly/common/app.properties
@@ -1,3 +1,4 @@
+#!/usr/bin/env bash
 #
 # Licensed to the Apache Software Foundation (ASF) under one or more
 # contributor license agreements.  See the NOTICE file distributed with
diff --git a/examples/helloworld/dubbo/go-client/assembly/common/build.sh b/examples/helloworld/dubbo/go-client/assembly/common/build.sh
index c9a9e87c73ef45195d6f70acccf9374ee6cb906b..0f0b22f5f42a01fffa48efa4cae5d953fb44d7ed 100644
--- a/examples/helloworld/dubbo/go-client/assembly/common/build.sh
+++ b/examples/helloworld/dubbo/go-client/assembly/common/build.sh
@@ -15,6 +15,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+
 rm -rf target/
 
 PROJECT_HOME=`pwd`
diff --git a/examples/helloworld/dubbo/go-client/assembly/linux/release.sh b/examples/helloworld/dubbo/go-client/assembly/linux/release.sh
index 10eb3d73f8760d394537b90b7aeff83ca2b243ed..13b19f48a8ccb448041feb636fa6b3cc4c9997a7 100644
--- a/examples/helloworld/dubbo/go-client/assembly/linux/release.sh
+++ b/examples/helloworld/dubbo/go-client/assembly/linux/release.sh
@@ -16,7 +16,6 @@
 # limitations under the License.
 
 
-
 set -e
 
 export GOOS=linux
diff --git a/examples/helloworld/dubbo/go-client/assembly/linux/test.sh b/examples/helloworld/dubbo/go-client/assembly/linux/test.sh
index 78b650c0d49483f9f6862532afa5c483b618475a..c6c31b3b7985d3b91fdeab39c2cd9954968fb227 100644
--- a/examples/helloworld/dubbo/go-client/assembly/linux/test.sh
+++ b/examples/helloworld/dubbo/go-client/assembly/linux/test.sh
@@ -16,7 +16,6 @@
 # limitations under the License.
 
 
-
 set -e
 
 export GOOS=linux
diff --git a/examples/helloworld/dubbo/go-server/assembly/bin/load.sh b/examples/helloworld/dubbo/go-server/assembly/bin/load.sh
index 90077c2471d7d5553ddea6402c7e2c06867cba8e..2e127ac652ec2b418d74efa1abfd159250cb44d1 100644
--- a/examples/helloworld/dubbo/go-server/assembly/bin/load.sh
+++ b/examples/helloworld/dubbo/go-server/assembly/bin/load.sh
@@ -15,7 +15,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-
 APP_NAME="APPLICATION_NAME"
 APP_ARGS=""
 
diff --git a/examples/helloworld/dubbo/java-server/src/main/assembly/assembly.xml b/examples/helloworld/dubbo/java-server/src/main/assembly/assembly.xml
index 00c9fddf3f897c90082f0a8ad3f76f9016733390..98a2e100f18d195b8f0b44eb07080eaa9097af79 100644
--- a/examples/helloworld/dubbo/java-server/src/main/assembly/assembly.xml
+++ b/examples/helloworld/dubbo/java-server/src/main/assembly/assembly.xml
@@ -12,6 +12,7 @@
   See the License for the specific language governing permissions and
   limitations under the License.
 -->
+
 <assembly>
 	<id>assembly</id>
 	<formats>
diff --git a/examples/helloworld/dubbo/java-server/src/main/resources/META-INF/spring/dubbo.provider.xml b/examples/helloworld/dubbo/java-server/src/main/resources/META-INF/spring/dubbo.provider.xml
index 3fca067a7353605bd59a2ebf1d22b7bdd25acf1f..edd01dc870b3bb16ffd7525387e994ea11da9b8e 100644
--- a/examples/helloworld/dubbo/java-server/src/main/resources/META-INF/spring/dubbo.provider.xml
+++ b/examples/helloworld/dubbo/java-server/src/main/resources/META-INF/spring/dubbo.provider.xml
@@ -12,6 +12,7 @@
   See the License for the specific language governing permissions and
   limitations under the License.
 -->
+
 <beans xmlns="http://www.springframework.org/schema/beans"
 	   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 	   xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
diff --git a/examples/hystrixfilter/dubbo/with-hystrix-go-client/app/client.go b/examples/hystrixfilter/dubbo/with-hystrix-go-client/app/client.go
new file mode 100644
index 0000000000000000000000000000000000000000..0d8d7d2ffd6b7ea5db3831b55fa4dc45ace302c5
--- /dev/null
+++ b/examples/hystrixfilter/dubbo/with-hystrix-go-client/app/client.go
@@ -0,0 +1,130 @@
+/*
+ * 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 main
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"os/signal"
+	"syscall"
+	"time"
+)
+
+import (
+	"github.com/apache/dubbo-go-hessian2"
+)
+
+import (
+	"github.com/apache/dubbo-go/common/logger"
+	_ "github.com/apache/dubbo-go/common/proxy/proxy_factory"
+	"github.com/apache/dubbo-go/config"
+	_ "github.com/apache/dubbo-go/protocol/dubbo"
+	_ "github.com/apache/dubbo-go/registry/protocol"
+
+	_ "github.com/apache/dubbo-go/filter/impl"
+
+	_ "github.com/apache/dubbo-go/cluster/cluster_impl"
+	_ "github.com/apache/dubbo-go/cluster/loadbalance"
+	_ "github.com/apache/dubbo-go/registry/zookeeper"
+)
+
+var (
+	survivalTimeout int = 10e9
+)
+
+// they are necessary:
+// 		export CONF_CONSUMER_FILE_PATH="xxx"
+// 		export APP_LOG_CONF_FILE="xxx"
+func main() {
+
+	hessian.RegisterJavaEnum(Gender(MAN))
+	hessian.RegisterJavaEnum(Gender(WOMAN))
+	hessian.RegisterPOJO(&User{})
+	getUserChan := make(chan string, 32)
+	getErrChan := make(chan string, 32)
+	getUser1Chan := make(chan string, 32)
+
+	config.Load()
+	logger.Debugf("[Start to test GetUser]")
+	for i := 0; i < 32; i++ {
+		go func() {
+			user := &User{}
+			err := userProvider.GetUser(context.TODO(), []interface{}{"A003"}, user)
+			getUserChan <- fmt.Sprintf("Result: %s ; Error: %v", user.Name, err)
+		}()
+	}
+	time.Sleep(time.Second * 4)
+
+	logger.Debugf("[Start to test GetErr, without error whitelist]")
+	for i := 0; i < 32; i++ {
+		go func() {
+			user := &User{}
+			err := userProvider.GetErr(context.TODO(), []interface{}{"A003"}, user)
+			getErrChan <- fmt.Sprintf("Result: %s ; Error: %v", user.Name, err)
+		}()
+	}
+	time.Sleep(time.Second * 4)
+
+	logger.Debugf("[Start to test illegal method GetUser1, with error whitelist]")
+	for i := 0; i < 32; i++ {
+		go func() {
+			user := &User{}
+			err := userProvider.GetUser1(context.TODO(), []interface{}{"A003"}, user)
+			getUser1Chan <- fmt.Sprintf("Result: %s ; Error: %v", user.Name, err)
+		}()
+	}
+	time.Sleep(time.Second * 4)
+	for i := 1; i < 32; i++ {
+		resGot := <-getUserChan
+		logger.Infof("[GetUser] %v", resGot)
+	}
+	for i := 1; i < 32; i++ {
+		resGot := <-getErrChan
+		logger.Infof("[GetErr] %v", resGot)
+	}
+	for i := 1; i < 32; i++ {
+		resGot := <-getUser1Chan
+		logger.Infof("[GetUser1] %v", resGot)
+	}
+	//initSignal()
+}
+
+func initSignal() {
+	signals := make(chan os.Signal, 1)
+	// It is not possible to block SIGKILL or syscall.SIGSTOP
+	signal.Notify(signals, os.Interrupt, os.Kill, syscall.SIGHUP,
+		syscall.SIGQUIT, syscall.SIGTERM, syscall.SIGINT)
+	for {
+		sig := <-signals
+		logger.Infof("get signal %s", sig.String())
+		switch sig {
+		case syscall.SIGHUP:
+			// reload()
+		default:
+			go time.AfterFunc(time.Duration(survivalTimeout)*time.Second, func() {
+				logger.Warnf("app exit now by force...")
+				os.Exit(1)
+			})
+
+			// 瑕佷箞fastFailTimeout鏃堕棿鍐呮墽琛屽畬姣曚笅闈㈢殑閫昏緫鐒跺悗绋嬪簭閫€鍑猴紝瑕佷箞鎵ц涓婇潰鐨勮秴鏃跺嚱鏁扮▼搴忓己琛岄€€鍑�
+			fmt.Println("app exit now...")
+			return
+		}
+	}
+}
diff --git a/examples/hystrixfilter/dubbo/with-hystrix-go-client/app/example_fallback_filter.go b/examples/hystrixfilter/dubbo/with-hystrix-go-client/app/example_fallback_filter.go
new file mode 100644
index 0000000000000000000000000000000000000000..0e86988fd787e0df941b62ad038746b412baf314
--- /dev/null
+++ b/examples/hystrixfilter/dubbo/with-hystrix-go-client/app/example_fallback_filter.go
@@ -0,0 +1,80 @@
+/*
+ * 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 main
+
+import (
+	"time"
+)
+
+import (
+	"github.com/apache/dubbo-go/common/extension"
+	"github.com/apache/dubbo-go/common/logger"
+	"github.com/apache/dubbo-go/filter"
+	"github.com/apache/dubbo-go/filter/impl"
+	"github.com/apache/dubbo-go/protocol"
+)
+
+const (
+	EXAMPLE_FALLBACK_FILTER = "example_fallback"
+)
+
+//This is an example filter that handles result from hystrix filter
+//Define your filters and write your service downgrade strategy like this
+//TODO: Maybe a base fallback filter can be offered
+type ExampleFallbackFilter struct {
+}
+
+func GetExampleFallbackFilter() filter.Filter {
+	return &ExampleFallbackFilter{}
+}
+
+//The name should be the same as in your config
+//Put the filter in front of hystrix filter
+func init() {
+	extension.SetFilter(EXAMPLE_FALLBACK_FILTER, GetExampleFallbackFilter)
+}
+
+func (ff *ExampleFallbackFilter) Invoke(invoker protocol.Invoker, invocation protocol.Invocation) protocol.Result {
+	return invoker.Invoke(invocation)
+
+}
+func (ff *ExampleFallbackFilter) OnResponse(result protocol.Result, invoker protocol.Invoker, invocation protocol.Invocation) protocol.Result {
+	if err := result.Error(); err != nil {
+		hystrixError, ok := err.(*impl.HystrixFilterError)
+		if ok {
+			if hystrixError.FailByHystrix() {
+				logger.Debugf("[Example fallback filter]%s get error caused by %s", invocation.MethodName(), hystrixError.Error())
+				//Handle the error caused by Hystrix, including circuit breaking, concurrency limit and timeout
+				//The detailed error source can be got through hystrixError.Error()
+				//In this example we return a mock result under this circumstance
+				res := User{
+					"MockID",
+					"MockName",
+					55,
+					time.Now(),
+					Gender(MAN),
+				}
+				*(invocation.Reply().(*User)) = res
+				result.SetResult(&res)
+				result.SetError(nil)
+			}
+		}
+	}
+	//If the error is not caused by hystrix, the result doesn't come from hystrix filter or there's no error,
+	//we just return it here.
+	return result
+}
diff --git a/examples/hystrixfilter/dubbo/with-hystrix-go-client/app/user.go b/examples/hystrixfilter/dubbo/with-hystrix-go-client/app/user.go
new file mode 100644
index 0000000000000000000000000000000000000000..affa5418a701842e890f9e2498c2ef7a769532bd
--- /dev/null
+++ b/examples/hystrixfilter/dubbo/with-hystrix-go-client/app/user.go
@@ -0,0 +1,149 @@
+/*
+ * 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 main
+
+import (
+	"context"
+	"fmt"
+	"strconv"
+	"time"
+)
+
+import (
+	hessian "github.com/apache/dubbo-go-hessian2"
+)
+
+import (
+	"github.com/apache/dubbo-go/config"
+)
+
+type Gender hessian.JavaEnum
+
+var (
+	userProvider  = new(UserProvider)
+	userProvider1 = new(UserProvider1)
+	userProvider2 = new(UserProvider2)
+)
+
+func init() {
+	config.SetConsumerService(userProvider)
+	config.SetConsumerService(userProvider1)
+	config.SetConsumerService(userProvider2)
+}
+
+const (
+	MAN hessian.JavaEnum = iota
+	WOMAN
+)
+
+var genderName = map[hessian.JavaEnum]string{
+	MAN:   "MAN",
+	WOMAN: "WOMAN",
+}
+
+var genderValue = map[string]hessian.JavaEnum{
+	"MAN":   MAN,
+	"WOMAN": WOMAN,
+}
+
+func (g Gender) JavaClassName() string {
+	return "com.ikurento.user.Gender"
+}
+
+func (g Gender) String() string {
+	s, ok := genderName[hessian.JavaEnum(g)]
+	if ok {
+		return s
+	}
+
+	return strconv.Itoa(int(g))
+}
+
+func (g Gender) EnumValue(s string) hessian.JavaEnum {
+	v, ok := genderValue[s]
+	if ok {
+		return v
+	}
+
+	return hessian.InvalidJavaEnum
+}
+
+type User struct {
+	// !!! Cannot define lowercase names of variable
+	Id   string
+	Name string
+	Age  int32
+	Time time.Time
+	Sex  Gender // 娉ㄦ剰姝ゅ锛宩ava enum Object <--> go string
+}
+
+func (u User) String() string {
+	return fmt.Sprintf(
+		"User{Id:%s, Name:%s, Age:%d, Time:%s, Sex:%s}",
+		u.Id, u.Name, u.Age, u.Time, u.Sex,
+	)
+}
+
+func (User) JavaClassName() string {
+	return "com.ikurento.user.User"
+}
+
+type UserProvider struct {
+	GetUsers func(req []interface{}) ([]interface{}, error)
+	GetErr   func(ctx context.Context, req []interface{}, rsp *User) error
+	GetUser  func(ctx context.Context, req []interface{}, rsp *User) error
+	GetUser0 func(id string, name string) (User, error)
+	GetUser1 func(ctx context.Context, req []interface{}, rsp *User) error
+	GetUser2 func(ctx context.Context, req []interface{}, rsp *User) error `dubbo:"getUser"`
+	GetUser3 func() error
+	Echo     func(ctx context.Context, req interface{}) (interface{}, error) // Echo represent EchoFilter will be used
+}
+
+func (u *UserProvider) Reference() string {
+	return "UserProvider"
+}
+
+type UserProvider1 struct {
+	GetUsers func(req []interface{}) ([]interface{}, error)
+	GetErr   func(ctx context.Context, req []interface{}, rsp *User) error
+	GetUser  func(ctx context.Context, req []interface{}, rsp *User) error
+	GetUser0 func(id string, name string) (User, error)
+	GetUser1 func(ctx context.Context, req []interface{}, rsp *User) error
+	GetUser2 func(ctx context.Context, req []interface{}, rsp *User) error `dubbo:"getUser"`
+	GetUser3 func() error
+	Echo     func(ctx context.Context, req interface{}) (interface{}, error) // Echo represent EchoFilter will be used
+}
+
+func (u *UserProvider1) Reference() string {
+	return "UserProvider1"
+}
+
+type UserProvider2 struct {
+	GetUsers func(req []interface{}) ([]interface{}, error)
+	GetErr   func(ctx context.Context, req []interface{}, rsp *User) error
+	GetUser  func(ctx context.Context, req []interface{}, rsp *User) error
+	GetUser0 func(id string, name string) (User, error)
+	GetUser1 func(ctx context.Context, req []interface{}, rsp *User) error
+	GetUser2 func(ctx context.Context, req []interface{}, rsp *User) error `dubbo:"getUser"`
+	GetUser3 func() error
+	Echo     func(ctx context.Context, req interface{}) (interface{}, error) // Echo represent EchoFilter will be used
+}
+
+func (u *UserProvider2) Reference() string {
+	return "UserProvider2"
+}
diff --git a/examples/hystrixfilter/dubbo/with-hystrix-go-client/app/version.go b/examples/hystrixfilter/dubbo/with-hystrix-go-client/app/version.go
new file mode 100644
index 0000000000000000000000000000000000000000..c6138584f1ddeab3a4927774f44f9e78a8f08da7
--- /dev/null
+++ b/examples/hystrixfilter/dubbo/with-hystrix-go-client/app/version.go
@@ -0,0 +1,22 @@
+/*
+ * 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 main
+
+var (
+	Version = "2.6.0"
+)
diff --git a/examples/hystrixfilter/dubbo/with-hystrix-go-client/assembly/bin/load.sh b/examples/hystrixfilter/dubbo/with-hystrix-go-client/assembly/bin/load.sh
new file mode 100644
index 0000000000000000000000000000000000000000..ffa240b29d9e76761a151e7462092b86908de6f6
--- /dev/null
+++ b/examples/hystrixfilter/dubbo/with-hystrix-go-client/assembly/bin/load.sh
@@ -0,0 +1,203 @@
+#!/usr/bin/env bash
+#
+# 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.
+
+
+APP_NAME="APPLICATION_NAME"
+APP_ARGS=""
+SLEEP_INTERVAL=5
+MAX_LIFETIME=4000
+
+PROJECT_HOME=""
+OS_NAME=`uname`
+if [[ ${OS_NAME} != "Windows" ]]; then
+    PROJECT_HOME=`pwd`
+    PROJECT_HOME=${PROJECT_HOME}"/"
+else
+    APP_NAME="APPLICATION_NAME.exe"
+fi
+
+export CONF_CONSUMER_FILE_PATH=${PROJECT_HOME}"TARGET_CONF_FILE"
+export APP_LOG_CONF_FILE=${PROJECT_HOME}"TARGET_LOG_CONF_FILE"
+# export GOTRACEBACK=system
+# export GODEBUG=gctrace=1
+
+usage() {
+    echo "Usage: $0 start [conf suffix]"
+    echo "       $0 stop"
+    echo "       $0 term"
+    echo "       $0 restart"
+    echo "       $0 list"
+    echo "       $0 monitor"
+    echo "       $0 crontab"
+    exit
+}
+
+start() {
+    arg=$1
+    if [ "$arg" = "" ];then
+        echo "No registry type! Default client.yml!"
+    else
+        export CONF_CONSUMER_FILE_PATH=${CONF_CONSUMER_FILE_PATH//\.yml/\_$arg\.yml}
+    fi
+    if [ ! -f "${CONF_CONSUMER_FILE_PATH}" ];then
+        echo $CONF_CONSUMER_FILE_PATH" is not existing!"
+        return
+    fi
+    APP_LOG_PATH=${PROJECT_HOME}"logs/"
+    mkdir -p ${APP_LOG_PATH}
+    APP_BIN=${PROJECT_HOME}sbin/${APP_NAME}
+    chmod u+x ${APP_BIN}
+    # CMD="nohup ${APP_BIN} ${APP_ARGS} >>${APP_NAME}.nohup.out 2>&1 &"
+    CMD="${APP_BIN}"
+    eval ${CMD}
+    PID=`ps aux | grep -w ${APP_NAME} | grep -v grep | awk '{print $2}'`
+    if [[ ${OS_NAME} != "Linux" && ${OS_NAME} != "Darwin" ]]; then
+        PID=`ps aux | grep -w ${APP_NAME} | grep -v grep | awk '{print $1}'`
+    fi
+    CUR=`date +%FT%T`
+    if [ "${PID}" != "" ]; then
+        for p in ${PID}
+        do
+            echo "start ${APP_NAME} ( pid =" ${p} ") at " ${CUR}
+        done
+    fi
+}
+
+stop() {
+    PID=`ps aux | grep -w ${APP_NAME} | grep -v grep | awk '{print $2}'`
+    if [[ ${OS_NAME} != "Linux" && ${OS_NAME} != "Darwin" ]]; then
+        PID=`ps aux | grep -w ${APP_NAME} | grep -v grep | awk '{print $1}'`
+    fi
+    if [ "${PID}" != "" ];
+    then
+        for ps in ${PID}
+        do
+            echo "kill -SIGINT ${APP_NAME} ( pid =" ${ps} ")"
+            kill -2 ${ps}
+        done
+    fi
+}
+
+
+term() {
+    PID=`ps aux | grep -w ${APP_NAME} | grep -v grep | awk '{print $2}'`
+    if [[ ${OS_NAME} != "Linux" && ${OS_NAME} != "Darwin" ]]; then
+        PID=`ps aux | grep -w ${APP_NAME} | grep -v grep | awk '{print $1}'`
+    fi
+    if [ "${PID}" != "" ];
+    then
+        for ps in ${PID}
+        do
+            echo "kill -9 ${APP_NAME} ( pid =" ${ps} ")"
+            kill -9 ${ps}
+        done
+    fi
+}
+
+list() {
+    PID=`ps aux | grep -w ${APP_NAME} | grep -v grep | awk '{printf("%s,%s,%s,%s\n", $1, $2, $9, $10)}'`
+    if [[ ${OS_NAME} != "Linux" && ${OS_NAME} != "Darwin" ]]; then
+        PID=`ps aux | grep -w ${APP_NAME} | grep -v grep | awk '{printf("%s,%s,%s,%s,%s\n", $1, $4, $6, $7, $8)}'`
+    fi
+
+    if [ "${PID}" != "" ]; then
+        echo "list ${APP_NAME}"
+
+        if [[ ${OS_NAME} == "Linux" || ${OS_NAME} == "Darwin" ]]; then
+            echo "index: user, pid, start, duration"
+        else
+            echo "index: PID, WINPID, UID, STIME, COMMAND"
+        fi
+        idx=0
+        for ps in ${PID}
+        do
+            echo "${idx}: ${ps}"
+            ((idx ++))
+        done
+    fi
+}
+
+monitor() {
+    idx=0
+    while true; do
+        PID=`ps aux | grep -w ${APP_NAME} | grep -v grep | awk '{print $2}'`
+        if [[ ${OS_NAME} != "Linux" && ${OS_NAME} != "Darwin" ]]; then
+            PID=`ps aux | grep -w ${APP_NAME} | grep -v grep | awk '{print $1}'`
+        fi
+        if [[ "${PID}" == "" ]]; then
+            start
+            idx=0
+        fi
+
+        ((LIFE=idx*${SLEEP_INTERVAL}))
+        echo "${APP_NAME} ( pid = " ${PID} ") has been working in normal state for " $LIFE " seconds."
+        ((idx ++))
+        sleep ${SLEEP_INTERVAL}
+    done
+}
+
+crontab() {
+    idx=0
+    while true; do
+        PID=`ps aux | grep -w ${APP_NAME} | grep -v grep | awk '{print $2}'`
+        if [[ ${OS_NAME} != "Linux" && ${OS_NAME} != "Darwin" ]]; then
+            PID=`ps aux | grep -w ${APP_NAME} | grep -v grep | awk '{print $1}'`
+        fi
+        if [[ "${PID}" == "" ]]; then
+            start
+            idx=0
+        fi
+
+        ((LIFE=idx*${SLEEP_INTERVAL}))
+        echo "${APP_NAME} ( pid = " ${PID} ") has been working in normal state for " $LIFE " seconds."
+        ((idx ++))
+        sleep ${SLEEP_INTERVAL}
+        if [[ ${LIFE} -gt ${MAX_LIFETIME} ]]; then
+            kill -9 ${PID}
+        fi
+    done
+}
+
+opt=$1
+case C"$opt" in
+    Cstart)
+        start $2
+        ;;
+    Cstop)
+        stop
+        ;;
+    Cterm)
+        term
+        ;;
+    Crestart)
+        term
+        start $2
+        ;;
+    Clist)
+        list
+        ;;
+    Cmonitor)
+        monitor
+        ;;
+    Ccrontab)
+        crontab
+        ;;
+    C*)
+        usage
+        ;;
+esac
+
diff --git a/examples/hystrixfilter/dubbo/with-hystrix-go-client/assembly/common/app.properties b/examples/hystrixfilter/dubbo/with-hystrix-go-client/assembly/common/app.properties
new file mode 100644
index 0000000000000000000000000000000000000000..e10868f4d292765c7eeb2e8bb8b1684a44f56a14
--- /dev/null
+++ b/examples/hystrixfilter/dubbo/with-hystrix-go-client/assembly/common/app.properties
@@ -0,0 +1,23 @@
+#
+# 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.
+
+
+export TARGET_EXEC_NAME="user_info_client"
+# BUILD_PACKAGE="dubbogo-examples/user-info/client/app"
+export BUILD_PACKAGE="app"
+
+export TARGET_CONF_FILE="conf/client.yml"
+export TARGET_LOG_CONF_FILE="conf/log.yml"
diff --git a/examples/hystrixfilter/dubbo/with-hystrix-go-client/assembly/common/build.sh b/examples/hystrixfilter/dubbo/with-hystrix-go-client/assembly/common/build.sh
new file mode 100644
index 0000000000000000000000000000000000000000..c9a9e87c73ef45195d6f70acccf9374ee6cb906b
--- /dev/null
+++ b/examples/hystrixfilter/dubbo/with-hystrix-go-client/assembly/common/build.sh
@@ -0,0 +1,83 @@
+#!/usr/bin/env bash
+#
+# 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.
+
+rm -rf target/
+
+PROJECT_HOME=`pwd`
+TARGET_FOLDER=${PROJECT_HOME}/target/${GOOS}
+
+TARGET_SBIN_NAME=${TARGET_EXEC_NAME}
+version=`cat app/version.go | grep Version | grep -v "Apache" | awk -F '=' '{print $2}' | awk -F '"' '{print $2}'`
+if [[ ${GOOS} == "windows" ]]; then
+    TARGET_SBIN_NAME=${TARGET_SBIN_NAME}.exe
+fi
+TARGET_NAME=${TARGET_FOLDER}/${TARGET_SBIN_NAME}
+if [[ $PROFILE == "dev" ||  $PROFILE == "test" ]]; then
+    # GFLAGS=-gcflags "-N -l" -race -x -v # -x浼氭妸go build鐨勮缁嗚繃绋嬭緭鍑�
+    # GFLAGS=-gcflags "-N -l" -race -v
+    # GFLAGS="-gcflags \"-N -l\" -v"
+    cd ${BUILD_PACKAGE} && GOOS=$GOOS GOARCH=$GOARCH go build -gcflags "-N -l" -x -v -i -o ${TARGET_NAME} && cd -
+else
+    # -s鍘绘帀绗﹀彿琛紙鐒跺悗panic鏃跺€欑殑stack trace灏辨病鏈変换浣曟枃浠跺悕/琛屽彿淇℃伅浜嗭紝杩欎釜绛変环浜庢櫘閫欳/C++绋嬪簭琚玸trip鐨勬晥鏋滐級锛�
+    # -w鍘绘帀DWARF璋冭瘯淇℃伅锛屽緱鍒扮殑绋嬪簭灏变笉鑳界敤gdb璋冭瘯浜嗐€�-s鍜�-w涔熷彲浠ュ垎寮€浣跨敤锛屼竴鑸潵璇村鏋滀笉鎵撶畻鐢╣db璋冭瘯锛�
+    # -w鍩烘湰娌″暐鎹熷け銆�-s鐨勬崯澶卞氨鏈夌偣澶т簡銆�
+    cd ${BUILD_PACKAGE} && GOOS=$GOOS GOARCH=$GOARCH go build -ldflags "-w" -x -v -i -o ${TARGET_NAME} && cd -
+fi
+
+TAR_NAME=${TARGET_EXEC_NAME}-${version}-`date "+%Y%m%d-%H%M"`-${PROFILE}
+
+mkdir -p ${TARGET_FOLDER}/${TAR_NAME}
+
+SBIN_DIR=${TARGET_FOLDER}/${TAR_NAME}/sbin
+BIN_DIR=${TARGET_FOLDER}/${TAR_NAME}
+CONF_DIR=${TARGET_FOLDER}/${TAR_NAME}/conf
+
+mkdir -p ${SBIN_DIR}
+mkdir -p ${CONF_DIR}
+
+mv ${TARGET_NAME} ${SBIN_DIR}
+cp -r assembly/bin ${BIN_DIR}
+cd ${BIN_DIR}/bin/ && mv load.sh load_${TARGET_EXEC_NAME}.sh && cd -
+
+platform=$(uname)
+# modify APPLICATION_NAME
+if [ ${platform} == "Darwin" ]; then
+    sed -i "" "s~APPLICATION_NAME~${TARGET_EXEC_NAME}~g" ${BIN_DIR}/bin/*
+else
+    sed -i "s~APPLICATION_NAME~${TARGET_EXEC_NAME}~g" ${BIN_DIR}/bin/*
+fi
+
+# modify TARGET_CONF_FILE
+if [ ${platform} == "Darwin" ]; then
+    sed -i "" "s~TARGET_CONF_FILE~${TARGET_CONF_FILE}~g" ${BIN_DIR}/bin/*
+else
+    sed -i "s~TARGET_CONF_FILE~${TARGET_CONF_FILE}~g" ${BIN_DIR}/bin/*
+fi
+
+# modify TARGET_LOG_CONF_FILE
+if [ ${platform} == "Darwin" ]; then
+    sed -i "" "s~TARGET_LOG_CONF_FILE~${TARGET_LOG_CONF_FILE}~g" ${BIN_DIR}/bin/*
+else
+    sed -i "s~TARGET_LOG_CONF_FILE~${TARGET_LOG_CONF_FILE}~g" ${BIN_DIR}/bin/*
+fi
+
+cp -r profiles/${PROFILE}/* ${CONF_DIR}
+
+cd ${TARGET_FOLDER}
+
+tar czf ${TAR_NAME}.tar.gz ${TAR_NAME}/*
+
diff --git a/examples/hystrixfilter/dubbo/with-hystrix-go-client/assembly/linux/dev.sh b/examples/hystrixfilter/dubbo/with-hystrix-go-client/assembly/linux/dev.sh
new file mode 100644
index 0000000000000000000000000000000000000000..eada737c8d0939d4237a6d218fc2a07efdbff381
--- /dev/null
+++ b/examples/hystrixfilter/dubbo/with-hystrix-go-client/assembly/linux/dev.sh
@@ -0,0 +1,36 @@
+#!/usr/bin/env bash
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+
+set -e
+
+export GOOS=linux
+export GOARCH=amd64
+
+export PROFILE="dev"
+
+PROJECT_HOME=`pwd`
+
+if [ -f "${PROJECT_HOME}/assembly/common/app.properties" ]; then
+  . ${PROJECT_HOME}/assembly/common/app.properties
+fi
+
+
+if [ -f "${PROJECT_HOME}/assembly/common/build.sh" ]; then
+  sh ${PROJECT_HOME}/assembly/common/build.sh
+fi
diff --git a/examples/hystrixfilter/dubbo/with-hystrix-go-client/assembly/linux/release.sh b/examples/hystrixfilter/dubbo/with-hystrix-go-client/assembly/linux/release.sh
new file mode 100644
index 0000000000000000000000000000000000000000..10eb3d73f8760d394537b90b7aeff83ca2b243ed
--- /dev/null
+++ b/examples/hystrixfilter/dubbo/with-hystrix-go-client/assembly/linux/release.sh
@@ -0,0 +1,35 @@
+#!/usr/bin/env bash
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+
+set -e
+
+export GOOS=linux
+export GOARCH=amd64
+
+export PROFILE="release"
+export PROJECT_HOME=`pwd`
+
+if [ -f "${PROJECT_HOME}/assembly/common/app.properties" ]; then
+  . ${PROJECT_HOME}/assembly/common/app.properties
+fi
+
+
+if [ -f "${PROJECT_HOME}/assembly/common/build.sh" ]; then
+  sh ${PROJECT_HOME}/assembly/common/build.sh
+fi
diff --git a/examples/hystrixfilter/dubbo/with-hystrix-go-client/assembly/linux/test.sh b/examples/hystrixfilter/dubbo/with-hystrix-go-client/assembly/linux/test.sh
new file mode 100644
index 0000000000000000000000000000000000000000..78b650c0d49483f9f6862532afa5c483b618475a
--- /dev/null
+++ b/examples/hystrixfilter/dubbo/with-hystrix-go-client/assembly/linux/test.sh
@@ -0,0 +1,35 @@
+#!/usr/bin/env bash
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+
+set -e
+
+export GOOS=linux
+export GOARCH=amd64
+
+export PROFILE="test"
+export PROJECT_HOME=`pwd`
+
+if [ -f "${PROJECT_HOME}/assembly/common/app.properties" ]; then
+  . ${PROJECT_HOME}/assembly/common/app.properties
+fi
+
+
+if [ -f "${PROJECT_HOME}/assembly/common/build.sh" ]; then
+  sh ${PROJECT_HOME}/assembly/common/build.sh
+fi
diff --git a/examples/hystrixfilter/dubbo/with-hystrix-go-client/assembly/mac/dev.sh b/examples/hystrixfilter/dubbo/with-hystrix-go-client/assembly/mac/dev.sh
new file mode 100644
index 0000000000000000000000000000000000000000..c8284769909e62f0142c29e3a63177bf2826593f
--- /dev/null
+++ b/examples/hystrixfilter/dubbo/with-hystrix-go-client/assembly/mac/dev.sh
@@ -0,0 +1,36 @@
+#!/usr/bin/env bash
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+
+set -e
+
+export GOOS=darwin
+export GOARCH=amd64
+
+export PROFILE="dev"
+
+export PROJECT_HOME=`pwd`
+
+if [ -f "${PROJECT_HOME}/assembly/common/app.properties" ]; then
+	. ${PROJECT_HOME}/assembly/common/app.properties
+fi
+
+
+if [ -f "${PROJECT_HOME}/assembly/common/build.sh" ]; then
+	sh ${PROJECT_HOME}/assembly/common/build.sh
+fi
diff --git a/examples/hystrixfilter/dubbo/with-hystrix-go-client/assembly/mac/release.sh b/examples/hystrixfilter/dubbo/with-hystrix-go-client/assembly/mac/release.sh
new file mode 100644
index 0000000000000000000000000000000000000000..91c2dfee79b1499b640420191174f980eac187bb
--- /dev/null
+++ b/examples/hystrixfilter/dubbo/with-hystrix-go-client/assembly/mac/release.sh
@@ -0,0 +1,34 @@
+#!/usr/bin/env bash
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+
+set -e
+
+export GOOS=darwin
+export GOARCH=amd64
+
+export PROFILE="release"
+export PROJECT_HOME=`pwd`
+
+if [ -f "${PROJECT_HOME}/assembly/common/app.properties" ]; then
+  . ${PROJECT_HOME}/assembly/common/app.properties
+fi
+
+if [ -f "${PROJECT_HOME}/assembly/common/build.sh" ]; then
+  sh ${PROJECT_HOME}/assembly/common/build.sh
+fi
diff --git a/examples/hystrixfilter/dubbo/with-hystrix-go-client/assembly/mac/test.sh b/examples/hystrixfilter/dubbo/with-hystrix-go-client/assembly/mac/test.sh
new file mode 100644
index 0000000000000000000000000000000000000000..a7853f5e2d51df8e3e9509621952c44bca0d1a2d
--- /dev/null
+++ b/examples/hystrixfilter/dubbo/with-hystrix-go-client/assembly/mac/test.sh
@@ -0,0 +1,34 @@
+#!/usr/bin/env bash
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+set -e
+
+export GOOS=darwin
+export GOARCH=amd64
+
+export PROFILE="test"
+export PROJECT_HOME=`pwd`
+
+if [ -f "${PROJECT_HOME}/assembly/common/app.properties" ]; then
+  . ${PROJECT_HOME}/assembly/common/app.properties
+fi
+
+
+if [ -f "${PROJECT_HOME}/assembly/common/build.sh" ]; then
+  sh ${PROJECT_HOME}/assembly/common/build.sh
+fi
diff --git a/examples/hystrixfilter/dubbo/with-hystrix-go-client/assembly/windows/dev.sh b/examples/hystrixfilter/dubbo/with-hystrix-go-client/assembly/windows/dev.sh
new file mode 100644
index 0000000000000000000000000000000000000000..10a3866c0f4ed8e1070c4d5641259c04073df6cb
--- /dev/null
+++ b/examples/hystrixfilter/dubbo/with-hystrix-go-client/assembly/windows/dev.sh
@@ -0,0 +1,34 @@
+#!/usr/bin/env bash
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+
+set -e
+
+export GOOS=linux
+export GOARCH=amd64
+
+export PROFILE="dev"
+PROJECT_HOME=`pwd`
+
+if [ -f "${PROJECT_HOME}/assembly/common/app.properties" ]; then
+  . ${PROJECT_HOME}/assembly/common/app.properties
+fi
+
+if [ -f "${PROJECT_HOME}/assembly/common/build.sh" ]; then
+  sh ${PROJECT_HOME}/assembly/common/build.sh
+fi
diff --git a/examples/hystrixfilter/dubbo/with-hystrix-go-client/assembly/windows/release.sh b/examples/hystrixfilter/dubbo/with-hystrix-go-client/assembly/windows/release.sh
new file mode 100644
index 0000000000000000000000000000000000000000..21af573fa3842d47959d5726b11b81d5fff5b8df
--- /dev/null
+++ b/examples/hystrixfilter/dubbo/with-hystrix-go-client/assembly/windows/release.sh
@@ -0,0 +1,34 @@
+#!/usr/bin/env bash
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+
+set -e
+
+export GOOS=windows
+export GOARCH=amd64
+
+export PROFILE="release"
+export PROJECT_HOME=`pwd`
+
+if [ -f "${PROJECT_HOME}/assembly/common/app.properties" ]; then
+  . ${PROJECT_HOME}/assembly/common/app.properties
+fi
+
+if [ -f "${PROJECT_HOME}/assembly/common/build.sh" ]; then
+  sh ${PROJECT_HOME}/assembly/common/build.sh
+fi
diff --git a/examples/hystrixfilter/dubbo/with-hystrix-go-client/assembly/windows/test.sh b/examples/hystrixfilter/dubbo/with-hystrix-go-client/assembly/windows/test.sh
new file mode 100644
index 0000000000000000000000000000000000000000..2104da8b5909957c165eedc2f7d6866a890e9e6d
--- /dev/null
+++ b/examples/hystrixfilter/dubbo/with-hystrix-go-client/assembly/windows/test.sh
@@ -0,0 +1,34 @@
+#!/usr/bin/env bash
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+
+set -e
+
+export GOOS=windows
+export GOARCH=amd64
+
+export PROFILE="test"
+export PROJECT_HOME=`pwd`
+
+if [ -f "${PROJECT_HOME}/assembly/common/app.properties" ]; then
+  . ${PROJECT_HOME}/assembly/common/app.properties
+fi
+
+if [ -f "${PROJECT_HOME}/assembly/common/build.sh" ]; then
+  sh ${PROJECT_HOME}/assembly/common/build.sh
+fi
diff --git a/examples/hystrixfilter/dubbo/with-hystrix-go-client/profiles/dev/client.yml b/examples/hystrixfilter/dubbo/with-hystrix-go-client/profiles/dev/client.yml
new file mode 100644
index 0000000000000000000000000000000000000000..5b5003fb2cabde05e7d99e738afd584a635355bd
--- /dev/null
+++ b/examples/hystrixfilter/dubbo/with-hystrix-go-client/profiles/dev/client.yml
@@ -0,0 +1,98 @@
+# dubbo client yaml configure file
+
+
+check: true
+# client
+request_timeout : "3s"
+# connect timeout
+connect_timeout : "3s"
+
+# application config
+application_config:
+  organization : "ikurento.com"
+  name  : "BDTService"
+  module : "dubbogo user-info client"
+  version : "0.0.1"
+  owner : "ZX"
+  environment : "dev"
+
+registries :
+  "hangzhouzk":
+    # 瀵瑰簲java閰嶇疆涓璦ddress灞炴€х殑zookeeper <dubbo:registry address="zookeeper://127.0.0.1:2181"/>
+    protocol: "zookeeper"
+    timeout	: "3s"
+    address: "127.0.0.1:2181"
+    username: ""
+    password: ""
+  "shanghaizk":
+    protocol: "zookeeper"
+    timeout	: "3s"
+    address: "127.0.0.1:2182"
+    username: ""
+    password: ""
+
+references:
+  "UserProvider":
+    # 鍙互鎸囧畾澶氫釜registry锛屼娇鐢ㄩ€楀彿闅斿紑;涓嶆寚瀹氶粯璁ゅ悜鎵€鏈夋敞鍐屼腑蹇冩敞鍐�
+    registry: "hangzhouzk"
+    filter: "example_fallback,hystrix_consumer"
+    protocol : "dubbo"
+    interface : "com.ikurento.user.UserProvider"
+    cluster: "failover"
+    methods :
+      - name: "GetUser"
+        retries: 3
+
+protocol_conf:
+  dubbo:
+    reconnect_interval: 0
+    connection_number: 2
+    heartbeat_period: "5s"
+    session_timeout: "20s"
+    fail_fast_timeout: "5s"
+    pool_size: 64
+    pool_ttl: 600
+    getty_session_param:
+      compress_encoding: false
+      tcp_no_delay: true
+      tcp_keep_alive: true
+      keep_alive_period: "120s"
+      tcp_r_buf_size: 262144
+      tcp_w_buf_size: 65536
+      pkg_rq_size: 1024
+      pkg_wq_size: 512
+      tcp_read_timeout: "1s"
+      tcp_write_timeout: "5s"
+      wait_timeout: "1s"
+      max_msg_len: 10240
+      session_name: "client"
+
+filter_conf:
+  hystrix:
+    configs:
+      "Default":
+        timeout : 1000
+        max_concurrent_requests : 25
+        sleep_window : 5000
+        error_percent_threshold : 50
+        request_volume_threshold: 20
+      "userp":
+        timeout: 2000
+        max_concurrent_requests: 512
+        sleep_window: 4000
+        error_percent_threshold: 35
+        request_volume_threshold: 6
+      "userp_m":
+        timeout : 1200
+        max_concurrent_requests : 512
+        sleep_window : 6000
+        error_percent_threshold : 60
+        request_volume_threshold: 16
+        error_whitelist: [".*exception.*"]
+    default: "Default"
+    services:
+      "com.ikurento.user.UserProvider":
+        service_config: "userp"
+        methods:
+          "GetUser": "userp_m"
+          "GetUser1": "userp_m"
\ No newline at end of file
diff --git a/examples/hystrixfilter/dubbo/with-hystrix-go-client/profiles/dev/log.yml b/examples/hystrixfilter/dubbo/with-hystrix-go-client/profiles/dev/log.yml
new file mode 100644
index 0000000000000000000000000000000000000000..3ed242d290148743b198e32c5823ad9aae233e8b
--- /dev/null
+++ b/examples/hystrixfilter/dubbo/with-hystrix-go-client/profiles/dev/log.yml
@@ -0,0 +1,28 @@
+
+level: "debug"
+development: true
+disableCaller: false
+disableStacktrace: false
+sampling:
+encoding: "console"
+
+# encoder
+encoderConfig:
+  messageKey: "message"
+  levelKey: "level"
+  timeKey: "time"
+  nameKey: "logger"
+  callerKey: "caller"
+  stacktraceKey: "stacktrace"
+  lineEnding: ""
+  levelEncoder: "capitalColor"
+  timeEncoder: "iso8601"
+  durationEncoder: "seconds"
+  callerEncoder: "short"
+  nameEncoder: ""
+
+outputPaths:
+  - "stderr"
+errorOutputPaths:
+  - "stderr"
+initialFields:
diff --git a/examples/hystrixfilter/dubbo/with-hystrix-go-client/profiles/release/client.yml b/examples/hystrixfilter/dubbo/with-hystrix-go-client/profiles/release/client.yml
new file mode 100644
index 0000000000000000000000000000000000000000..9263f2d01ff5288144876eb14c08060bdb165974
--- /dev/null
+++ b/examples/hystrixfilter/dubbo/with-hystrix-go-client/profiles/release/client.yml
@@ -0,0 +1,98 @@
+# dubbo client yaml configure file
+
+
+check: true
+# client
+request_timeout : "3s"
+# connect timeout
+connect_timeout : "3s"
+
+# application config
+application_config:
+  organization : "ikurento.com"
+  name  : "BDTService"
+  module : "dubbogo user-info client"
+  version : "0.0.1"
+  owner : "ZX"
+  environment : "release"
+
+registries :
+  "hangzhouzk":
+    protocol: "zookeeper"
+    timeout	: "3s"
+    address: "127.0.0.1:2181"
+    username: ""
+    password: ""
+  "shanghaizk":
+    protocol: "zookeeper"
+    timeout	: "3s"
+    address: "127.0.0.1:2182"
+    username: ""
+    password: ""
+
+references:
+  "UserProvider":
+    # 鍙互鎸囧畾澶氫釜registry锛屼娇鐢ㄩ€楀彿闅斿紑;涓嶆寚瀹氶粯璁ゅ悜鎵€鏈夋敞鍐屼腑蹇冩敞鍐�
+    registry: "hangzhouzk"
+    filter: "example_fallback,hystrix_consumer"
+    protocol : "dubbo"
+#    version: "2.0"
+#    group: "as"
+    interface : "com.ikurento.user.UserProvider"
+    cluster: "failover"
+    methods :
+      - name: "GetUser"
+        retries: 3
+
+protocol_conf:
+  dubbo:
+    reconnect_interval: 0
+    connection_number: 2
+    heartbeat_period: "5s"
+    session_timeout: "20s"
+    fail_fast_timeout: "5s"
+    pool_size: 64
+    pool_ttl: 600
+    getty_session_param:
+      compress_encoding: false
+      tcp_no_delay: true
+      tcp_keep_alive: true
+      keep_alive_period: "120s"
+      tcp_r_buf_size: 262144
+      tcp_w_buf_size: 65536
+      pkg_rq_size: 1024
+      pkg_wq_size: 512
+      tcp_read_timeout: "1s"
+      tcp_write_timeout: "5s"
+      wait_timeout: "1s"
+      max_msg_len: 10240
+      session_name: "client"
+
+filter_conf:
+  hystrix:
+    configs:
+      "Default":
+        timeout : 1000
+        max_concurrent_requests : 10
+        sleep_window : 5000
+        error_percent_threshold : 50
+        request_volume_threshold: 20
+      "userp":
+        timeout: 1200
+        max_concurrent_requests: 8
+        sleep_window: 4000
+        error_percent_threshold: 45
+        request_volume_threshold: 15
+      "userp_m":
+        timeout : 1200
+        max_concurrent_requests : 12
+        sleep_window : 6000
+        error_percent_threshold : 60
+        request_volume_threshold: 30
+        fallback: "exampleFallback"
+    default: "Default"
+    services:
+      "com.ikurento.user.UserProvider":
+        service_config: "userp"
+        methods:
+          "GetUser": "userp_m"
diff --git a/examples/hystrixfilter/dubbo/with-hystrix-go-client/profiles/release/log.yml b/examples/hystrixfilter/dubbo/with-hystrix-go-client/profiles/release/log.yml
new file mode 100644
index 0000000000000000000000000000000000000000..d8606247b8479ac5054fd2ef70a0af4bca85c4c4
--- /dev/null
+++ b/examples/hystrixfilter/dubbo/with-hystrix-go-client/profiles/release/log.yml
@@ -0,0 +1,28 @@
+
+level: "warn"
+development: true
+disableCaller: true
+disableStacktrace: true
+sampling:
+encoding: "console"
+
+# encoder
+encoderConfig:
+  messageKey: "message"
+  levelKey: "level"
+  timeKey: "time"
+  nameKey: "logger"
+  callerKey: "caller"
+  stacktraceKey: "stacktrace"
+  lineEnding: ""
+  levelEncoder: "capitalColor"
+  timeEncoder: "iso8601"
+  durationEncoder: "seconds"
+  callerEncoder: "short"
+  nameEncoder: ""
+
+outputPaths:
+  - "stderr"
+errorOutputPaths:
+  - "stderr"
+initialFields:
diff --git a/examples/hystrixfilter/dubbo/with-hystrix-go-client/profiles/test/client.yml b/examples/hystrixfilter/dubbo/with-hystrix-go-client/profiles/test/client.yml
new file mode 100644
index 0000000000000000000000000000000000000000..048703b6bb130fbd26f5be88650e950f70355a24
--- /dev/null
+++ b/examples/hystrixfilter/dubbo/with-hystrix-go-client/profiles/test/client.yml
@@ -0,0 +1,99 @@
+# dubbo client yaml configure file
+
+
+check: true
+# client
+request_timeout : "3s"
+# connect timeout
+connect_timeout : "3s"
+
+# application config
+application_config:
+  organization : "ikurento.com"
+  name  : "BDTService"
+  module : "dubbogo user-info client"
+  version : "0.0.1"
+  owner : "ZX"
+  environment : "test"
+
+registries :
+  "hangzhouzk":
+    protocol: "zookeeper"
+    timeout	: "3s"
+    address: "127.0.0.1:2181"
+    username: ""
+    password: ""
+  "shanghaizk":
+    protocol: "zookeeper"
+    timeout	: "3s"
+    address: "127.0.0.1:2182"
+    username: ""
+    password: ""
+
+references:
+  "UserProvider":
+    # 鍙互鎸囧畾澶氫釜registry锛屼娇鐢ㄩ€楀彿闅斿紑;涓嶆寚瀹氶粯璁ゅ悜鎵€鏈夋敞鍐屼腑蹇冩敞鍐�
+    registry: "hangzhouzk"
+    filter: "example_fallback,hystrix_consumer"
+    protocol : "dubbo"
+#    version: "2.0"
+#    group: "as"
+    interface : "com.ikurento.user.UserProvider"
+    cluster: "failover"
+    methods :
+      - name: "GetUser"
+        retries: 3
+
+protocol_conf:
+  dubbo:
+    reconnect_interval: 0
+    connection_number: 2
+    heartbeat_period: "5s"
+    session_timeout: "20s"
+    fail_fast_timeout: "5s"
+    pool_size: 64
+    pool_ttl: 600
+    getty_session_param:
+      compress_encoding: false
+      tcp_no_delay: true
+      tcp_keep_alive: true
+      keep_alive_period: "120s"
+      tcp_r_buf_size: 262144
+      tcp_w_buf_size: 65536
+      pkg_rq_size: 1024
+      pkg_wq_size: 512
+      tcp_read_timeout: "1s"
+      tcp_write_timeout: "5s"
+      wait_timeout: "1s"
+      max_msg_len: 10240
+      session_name: "client"
+
+filter_conf:
+  hystrix:
+    configs:
+      "Default":
+        timeout : 1000
+        max_concurrent_requests : 25
+        sleep_window : 5000
+        error_percent_threshold : 50
+        request_volume_threshold: 20
+      "userp":
+        timeout: 2000
+        max_concurrent_requests: 512
+        sleep_window: 4000
+        error_percent_threshold: 35
+        request_volume_threshold: 6
+      "userp_m":
+        timeout : 1200
+        max_concurrent_requests : 512
+        sleep_window : 6000
+        error_percent_threshold : 60
+        request_volume_threshold: 16
+        error_whitelist: [".*exception.*"]
+    default: "Default"
+    services:
+      "com.ikurento.user.UserProvider":
+        service_config: "userp"
+        methods:
+          "GetUser": "userp_m"
+          "GetUser1": "userp_m"
\ No newline at end of file
diff --git a/examples/hystrixfilter/dubbo/with-hystrix-go-client/profiles/test/log.yml b/examples/hystrixfilter/dubbo/with-hystrix-go-client/profiles/test/log.yml
new file mode 100644
index 0000000000000000000000000000000000000000..f93d3c7fccadec845059460befb2e0b1076881e2
--- /dev/null
+++ b/examples/hystrixfilter/dubbo/with-hystrix-go-client/profiles/test/log.yml
@@ -0,0 +1,28 @@
+
+level: "info"
+development: false
+disableCaller: false
+disableStacktrace: true
+sampling:
+encoding: "console"
+
+# encoder
+encoderConfig:
+  messageKey: "message"
+  levelKey: "level"
+  timeKey: "time"
+  nameKey: "logger"
+  callerKey: "caller"
+  stacktraceKey: "stacktrace"
+  lineEnding: ""
+  levelEncoder: "capitalColor"
+  timeEncoder: "iso8601"
+  durationEncoder: "seconds"
+  callerEncoder: "short"
+  nameEncoder: ""
+
+outputPaths:
+  - "stderr"
+errorOutputPaths:
+  - "stderr"
+initialFields:
diff --git a/filter/impl/generic_filter.go b/filter/impl/generic_filter.go
index 12cb4c7fa59ac4f1f7c1466f385ea9e9b59567b5..35aadb11a444bda56109e238b17267f71ec2606b 100644
--- a/filter/impl/generic_filter.go
+++ b/filter/impl/generic_filter.go
@@ -83,11 +83,7 @@ func struct2MapAll(obj interface{}) interface{} {
 	if t.Kind() == reflect.Struct {
 		result := make(map[string]interface{}, t.NumField())
 		for i := 0; i < t.NumField(); i++ {
-			if v.Field(i).Kind() == reflect.Struct {
-				if v.Field(i).CanInterface() {
-					setInMap(result, t.Field(i), struct2MapAll(v.Field(i).Interface()))
-				}
-			} else if v.Field(i).Kind() == reflect.Slice {
+			if v.Field(i).Kind() == reflect.Struct || v.Field(i).Kind() == reflect.Slice || v.Field(i).Kind() == reflect.Map {
 				if v.Field(i).CanInterface() {
 					setInMap(result, t.Field(i), struct2MapAll(v.Field(i).Interface()))
 				}
@@ -106,6 +102,18 @@ func struct2MapAll(obj interface{}) interface{} {
 			newTemps = append(newTemps, newTemp)
 		}
 		return newTemps
+	} else if t.Kind() == reflect.Map {
+		var newTempMap = make(map[string]interface{}, v.Len())
+		iter := v.MapRange()
+		for iter.Next() {
+			mapK := iter.Key().String()
+			if !iter.Value().CanInterface() {
+				continue
+			}
+			mapV := iter.Value().Interface()
+			newTempMap[mapK] = struct2MapAll(mapV)
+		}
+		return newTempMap
 	} else {
 		return obj
 	}
diff --git a/filter/impl/generic_filter_test.go b/filter/impl/generic_filter_test.go
index a71a9db95759a143186fe9a1a4fb0c861c8949e8..9797c40df1f57017241675013620a53320e475ad 100644
--- a/filter/impl/generic_filter_test.go
+++ b/filter/impl/generic_filter_test.go
@@ -87,3 +87,35 @@ func Test_struct2MapAll_Slice(t *testing.T) {
 	assert.Equal(t, reflect.Slice, reflect.TypeOf(m["caCa"]).Kind())
 	assert.Equal(t, reflect.Map, reflect.TypeOf(m["caCa"].([]interface{})[0].(map[string]interface{})["xxYy"]).Kind())
 }
+func Test_struct2MapAll_Map(t *testing.T) {
+	var testData struct {
+		AaAa string
+		Baba map[string]interface{}
+		CaCa map[string]string
+		DdDd map[string]interface{}
+	}
+	testData.AaAa = "aaaa"
+	testData.Baba = make(map[string]interface{})
+	testData.CaCa = make(map[string]string)
+	testData.DdDd = nil
+
+	testData.Baba["kk"] = 1
+	var structData struct {
+		Str string
+	}
+	structData.Str = "str"
+	testData.Baba["struct"] = structData
+	testData.Baba["nil"] = nil
+	testData.CaCa["k1"] = "v1"
+	testData.CaCa["kv2"] = "v2"
+	m := struct2MapAll(testData)
+
+	assert.Equal(t, reflect.Map, reflect.TypeOf(m).Kind())
+	assert.Equal(t, reflect.String, reflect.TypeOf(m.(map[string]interface{})["aaAa"]).Kind())
+	assert.Equal(t, reflect.Map, reflect.TypeOf(m.(map[string]interface{})["baba"]).Kind())
+	assert.Equal(t, reflect.Map, reflect.TypeOf(m.(map[string]interface{})["baba"].(map[string]interface{})["struct"]).Kind())
+	assert.Equal(t, "str", m.(map[string]interface{})["baba"].(map[string]interface{})["struct"].(map[string]interface{})["str"])
+	assert.Equal(t, nil, m.(map[string]interface{})["baba"].(map[string]interface{})["nil"])
+	assert.Equal(t, reflect.Map, reflect.TypeOf(m.(map[string]interface{})["caCa"]).Kind())
+	assert.Equal(t, reflect.Map, reflect.TypeOf(m.(map[string]interface{})["ddDd"]).Kind())
+}
diff --git a/filter/impl/hystrix_filter.go b/filter/impl/hystrix_filter.go
new file mode 100644
index 0000000000000000000000000000000000000000..3fd9f87168616b69d5ec72460767890d6956c154
--- /dev/null
+++ b/filter/impl/hystrix_filter.go
@@ -0,0 +1,269 @@
+/*
+ * 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 impl
+
+import (
+	"fmt"
+	"regexp"
+	"sync"
+)
+import (
+	"github.com/afex/hystrix-go/hystrix"
+	perrors "github.com/pkg/errors"
+	"gopkg.in/yaml.v2"
+)
+import (
+	"github.com/apache/dubbo-go/common/extension"
+	"github.com/apache/dubbo-go/common/logger"
+	"github.com/apache/dubbo-go/config"
+	"github.com/apache/dubbo-go/filter"
+	"github.com/apache/dubbo-go/protocol"
+)
+
+const (
+	HYSTRIX_CONSUMER = "hystrix_consumer"
+	HYSTRIX_PROVIDER = "hystrix_provider"
+	HYSTRIX          = "hystrix"
+)
+
+var (
+	confConsumer       = &HystrixFilterConfig{}
+	confProvider       = &HystrixFilterConfig{}
+	configLoadMutex    = sync.RWMutex{}
+	consumerConfigOnce sync.Once
+	providerConfigOnce sync.Once
+)
+
+//The filter in the server end of dubbo-go can't get the invoke result for now,
+//this filter ONLY works in CLIENT end (consumer side) temporarily
+//Only after the callService logic is integrated into the filter chain of server end can this filter be used,
+//which will be done soon
+func init() {
+	extension.SetFilter(HYSTRIX_CONSUMER, GetHystrixFilterConsumer)
+	extension.SetFilter(HYSTRIX_PROVIDER, GetHystrixFilterProvider)
+}
+
+type HystrixFilterError struct {
+	err           error
+	failByHystrix bool
+}
+
+func (hfError *HystrixFilterError) Error() string {
+	return hfError.err.Error()
+}
+
+func (hfError *HystrixFilterError) FailByHystrix() bool {
+	return hfError.failByHystrix
+}
+func NewHystrixFilterError(err error, failByHystrix bool) error {
+	return &HystrixFilterError{
+		err:           err,
+		failByHystrix: failByHystrix,
+	}
+}
+
+type HystrixFilter struct {
+	COrP     bool //true for consumer
+	res      map[string][]*regexp.Regexp
+	ifNewMap sync.Map
+}
+
+func (hf *HystrixFilter) Invoke(invoker protocol.Invoker, invocation protocol.Invocation) protocol.Result {
+
+	cmdName := fmt.Sprintf("%s&method=%s", invoker.GetUrl().Key(), invocation.MethodName())
+
+	// Do the configuration if the circuit breaker is created for the first time
+	if _, load := hf.ifNewMap.LoadOrStore(cmdName, true); !load {
+		configLoadMutex.Lock()
+		filterConf := getConfig(invoker.GetUrl().Service(), invocation.MethodName(), hf.COrP)
+		for _, ptn := range filterConf.Error {
+			reg, err := regexp.Compile(ptn)
+			if err != nil {
+				logger.Warnf("[Hystrix Filter]Errors occurred parsing error omit regexp: %s, %v", ptn, err)
+			} else {
+				if hf.res == nil {
+					hf.res = make(map[string][]*regexp.Regexp)
+				}
+				hf.res[invocation.MethodName()] = append(hf.res[invocation.MethodName()], reg)
+			}
+		}
+		hystrix.ConfigureCommand(cmdName, hystrix.CommandConfig{
+			Timeout:                filterConf.Timeout,
+			MaxConcurrentRequests:  filterConf.MaxConcurrentRequests,
+			SleepWindow:            filterConf.SleepWindow,
+			ErrorPercentThreshold:  filterConf.ErrorPercentThreshold,
+			RequestVolumeThreshold: filterConf.RequestVolumeThreshold,
+		})
+		configLoadMutex.Unlock()
+	}
+	configLoadMutex.RLock()
+	_, _, err := hystrix.GetCircuit(cmdName)
+	configLoadMutex.RUnlock()
+	if err != nil {
+		logger.Errorf("[Hystrix Filter]Errors occurred getting circuit for %s , will invoke without hystrix, error is: ", cmdName, err)
+		return invoker.Invoke(invocation)
+	}
+	logger.Infof("[Hystrix Filter]Using hystrix filter: %s", cmdName)
+	var result protocol.Result
+	_ = hystrix.Do(cmdName, func() error {
+		result = invoker.Invoke(invocation)
+		err := result.Error()
+		if err != nil {
+			result.SetError(NewHystrixFilterError(err, false))
+			for _, reg := range hf.res[invocation.MethodName()] {
+				if reg.MatchString(err.Error()) {
+					logger.Debugf("[Hystrix Filter]Error in invocation but omitted in circuit breaker: %v; %s", err, cmdName)
+					return nil
+				}
+			}
+		}
+		return err
+	}, func(err error) error {
+		//Return error and if it is caused by hystrix logic, so that it can be handled by previous filters.
+		_, ok := err.(hystrix.CircuitError)
+		logger.Debugf("[Hystrix Filter]Hystrix health check counted, error is: %v, failed by hystrix: %v; %s", err, ok, cmdName)
+		result = &protocol.RPCResult{}
+		result.SetResult(nil)
+		result.SetError(NewHystrixFilterError(err, ok))
+		return err
+	})
+	return result
+}
+
+func (hf *HystrixFilter) OnResponse(result protocol.Result, invoker protocol.Invoker, invocation protocol.Invocation) protocol.Result {
+	return result
+}
+func GetHystrixFilterConsumer() filter.Filter {
+	//When first called, load the config in
+	consumerConfigOnce.Do(func() {
+		if err := initHystrixConfigConsumer(); err != nil {
+			logger.Warnf("[Hystrix Filter]Config load failed for consumer, error is: %v , will use default", err)
+		}
+	})
+	return &HystrixFilter{COrP: true}
+}
+
+func GetHystrixFilterProvider() filter.Filter {
+	providerConfigOnce.Do(func() {
+		if err := initHystrixConfigProvider(); err != nil {
+			logger.Warnf("[Hystrix Filter]Config load failed for provider, error is: %v , will use default", err)
+		}
+	})
+	return &HystrixFilter{COrP: false}
+}
+
+func getConfig(service string, method string, cOrP bool) CommandConfigWithError {
+	//Find method level config
+	var conf *HystrixFilterConfig
+	if cOrP {
+		conf = confConsumer
+	} else {
+		conf = confProvider
+	}
+	getConf := conf.Configs[conf.Services[service].Methods[method]]
+	if getConf != nil {
+		logger.Infof("[Hystrix Filter]Found method-level config for %s - %s", service, method)
+		return *getConf
+	}
+	//Find service level config
+	getConf = conf.Configs[conf.Services[service].ServiceConfig]
+	if getConf != nil {
+		logger.Infof("[Hystrix Filter]Found service-level config for %s - %s", service, method)
+		return *getConf
+	}
+	//Find default config
+	getConf = conf.Configs[conf.Default]
+	if getConf != nil {
+		logger.Infof("[Hystrix Filter]Found global default config for %s - %s", service, method)
+		return *getConf
+	}
+	getConf = &CommandConfigWithError{}
+	logger.Infof("[Hystrix Filter]No config found for %s - %s, using default", service, method)
+	return *getConf
+
+}
+
+func initHystrixConfigConsumer() error {
+	if config.GetConsumerConfig().FilterConf == nil {
+		return perrors.Errorf("no config for hystrix")
+	}
+	filterConfig := config.GetConsumerConfig().FilterConf.(map[interface{}]interface{})[HYSTRIX]
+	if filterConfig == nil {
+		return perrors.Errorf("no config for hystrix")
+	}
+	hystrixConfByte, err := yaml.Marshal(filterConfig)
+	if err != nil {
+		return err
+	}
+	err = yaml.Unmarshal(hystrixConfByte, confConsumer)
+	if err != nil {
+		return err
+	}
+	return nil
+}
+func initHystrixConfigProvider() error {
+	if config.GetProviderConfig().FilterConf == nil {
+		return perrors.Errorf("no config for hystrix")
+	}
+	filterConfig := config.GetConsumerConfig().FilterConf.(map[interface{}]interface{})[HYSTRIX]
+	if filterConfig == nil {
+		return perrors.Errorf("no config for hystrix")
+	}
+	hystrixConfByte, err := yaml.Marshal(filterConfig)
+	if err != nil {
+		return err
+	}
+	err = yaml.Unmarshal(hystrixConfByte, confProvider)
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+//For sake of dynamic config
+//func RefreshHystrix() error {
+//	conf = &HystrixFilterConfig{}
+//	hystrix.Flush()
+//	return initHystrixConfig()
+//}
+
+type CommandConfigWithError struct {
+	Timeout                int      `yaml:"timeout"`
+	MaxConcurrentRequests  int      `yaml:"max_concurrent_requests"`
+	RequestVolumeThreshold int      `yaml:"request_volume_threshold"`
+	SleepWindow            int      `yaml:"sleep_window"`
+	ErrorPercentThreshold  int      `yaml:"error_percent_threshold"`
+	Error                  []string `yaml:"error_whitelist"`
+}
+
+//Config:
+//- Timeout: how long to wait for command to complete, in milliseconds
+//- MaxConcurrentRequests: how many commands of the same type can run at the same time
+//- RequestVolumeThreshold: the minimum number of requests needed before a circuit can be tripped due to health
+//- SleepWindow: how long, in milliseconds, to wait after a circuit opens before testing for recovery
+//- ErrorPercentThreshold: it causes circuits to open once the rolling measure of errors exceeds this percent of requests
+//See hystrix doc
+
+type HystrixFilterConfig struct {
+	Configs  map[string]*CommandConfigWithError
+	Default  string
+	Services map[string]ServiceHystrixConfig
+}
+type ServiceHystrixConfig struct {
+	ServiceConfig string `yaml:"service_config"`
+	Methods       map[string]string
+}
diff --git a/filter/impl/hystrix_filter_test.go b/filter/impl/hystrix_filter_test.go
new file mode 100644
index 0000000000000000000000000000000000000000..d3a5183ede25d8a325bb1c73020edddd2ffbc638
--- /dev/null
+++ b/filter/impl/hystrix_filter_test.go
@@ -0,0 +1,217 @@
+/*
+ * 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 impl
+
+import (
+	"regexp"
+	"testing"
+)
+import (
+	"github.com/afex/hystrix-go/hystrix"
+	"github.com/pkg/errors"
+	"github.com/stretchr/testify/assert"
+)
+import (
+	"github.com/apache/dubbo-go/protocol"
+	"github.com/apache/dubbo-go/protocol/invocation"
+)
+
+func init() {
+	mockInitHystrixConfig()
+}
+
+func TestNewHystrixFilterError(t *testing.T) {
+	get := NewHystrixFilterError(errors.New("test"), true)
+	assert.True(t, get.(*HystrixFilterError).FailByHystrix())
+	assert.Equal(t, "test", get.Error())
+}
+
+func mockInitHystrixConfig() {
+	//Mock config
+	confConsumer = &HystrixFilterConfig{
+		make(map[string]*CommandConfigWithError),
+		"Default",
+		make(map[string]ServiceHystrixConfig),
+	}
+	confConsumer.Configs["Default"] = &CommandConfigWithError{
+		Timeout:                1000,
+		MaxConcurrentRequests:  600,
+		RequestVolumeThreshold: 5,
+		SleepWindow:            5000,
+		ErrorPercentThreshold:  5,
+		Error:                  nil,
+	}
+	confConsumer.Configs["userp"] = &CommandConfigWithError{
+		Timeout:                2000,
+		MaxConcurrentRequests:  64,
+		RequestVolumeThreshold: 15,
+		SleepWindow:            4000,
+		ErrorPercentThreshold:  45,
+		Error:                  nil,
+	}
+	confConsumer.Configs["userp_m"] = &CommandConfigWithError{
+		Timeout:                1200,
+		MaxConcurrentRequests:  64,
+		RequestVolumeThreshold: 5,
+		SleepWindow:            6000,
+		ErrorPercentThreshold:  60,
+		Error: []string{
+			"exception",
+		},
+	}
+	confConsumer.Services["com.ikurento.user.UserProvider"] = ServiceHystrixConfig{
+		"userp",
+		map[string]string{
+			"GetUser": "userp_m",
+		},
+	}
+
+}
+
+func TestGetHystrixFilter(t *testing.T) {
+	filterGot := GetHystrixFilterConsumer()
+	assert.NotNil(t, filterGot)
+}
+
+func TestGetConfig_1(t *testing.T) {
+	mockInitHystrixConfig()
+	configGot := getConfig("com.ikurento.user.UserProvider", "GetUser", true)
+	assert.NotNil(t, configGot)
+	assert.Equal(t, 1200, configGot.Timeout)
+	assert.Equal(t, 64, configGot.MaxConcurrentRequests)
+	assert.Equal(t, 6000, configGot.SleepWindow)
+	assert.Equal(t, 60, configGot.ErrorPercentThreshold)
+	assert.Equal(t, 5, configGot.RequestVolumeThreshold)
+}
+
+func TestGetConfig_2(t *testing.T) {
+	mockInitHystrixConfig()
+	configGot := getConfig("com.ikurento.user.UserProvider", "GetUser0", true)
+	assert.NotNil(t, configGot)
+	assert.Equal(t, 2000, configGot.Timeout)
+	assert.Equal(t, 64, configGot.MaxConcurrentRequests)
+	assert.Equal(t, 4000, configGot.SleepWindow)
+	assert.Equal(t, 45, configGot.ErrorPercentThreshold)
+	assert.Equal(t, 15, configGot.RequestVolumeThreshold)
+}
+
+func TestGetConfig_3(t *testing.T) {
+	mockInitHystrixConfig()
+	//This should use default
+	configGot := getConfig("Mock.Service", "GetMock", true)
+	assert.NotNil(t, configGot)
+	assert.Equal(t, 1000, configGot.Timeout)
+	assert.Equal(t, 600, configGot.MaxConcurrentRequests)
+	assert.Equal(t, 5000, configGot.SleepWindow)
+	assert.Equal(t, 5, configGot.ErrorPercentThreshold)
+	assert.Equal(t, 5, configGot.RequestVolumeThreshold)
+}
+
+type testMockSuccessInvoker struct {
+	protocol.BaseInvoker
+}
+
+func (iv *testMockSuccessInvoker) Invoke(invocation protocol.Invocation) protocol.Result {
+	return &protocol.RPCResult{
+		Rest: "Sucess",
+		Err:  nil,
+	}
+}
+
+type testMockFailInvoker struct {
+	protocol.BaseInvoker
+}
+
+func (iv *testMockFailInvoker) Invoke(invocation protocol.Invocation) protocol.Result {
+	return &protocol.RPCResult{
+		Err: errors.Errorf("exception"),
+	}
+}
+
+func TestHystrixFilter_Invoke_Success(t *testing.T) {
+	hf := &HystrixFilter{}
+	result := hf.Invoke(&testMockSuccessInvoker{}, &invocation.RPCInvocation{})
+	assert.NotNil(t, result)
+	assert.NoError(t, result.Error())
+	assert.NotNil(t, result.Result())
+}
+
+func TestHystrixFilter_Invoke_Fail(t *testing.T) {
+	hf := &HystrixFilter{}
+	result := hf.Invoke(&testMockFailInvoker{}, &invocation.RPCInvocation{})
+	assert.NotNil(t, result)
+	assert.Error(t, result.Error())
+}
+
+func TestHystricFilter_Invoke_CircuitBreak(t *testing.T) {
+	mockInitHystrixConfig()
+	hystrix.Flush()
+	hf := &HystrixFilter{COrP: true}
+	resChan := make(chan protocol.Result, 50)
+	for i := 0; i < 50; i++ {
+		go func() {
+			result := hf.Invoke(&testMockFailInvoker{}, &invocation.RPCInvocation{})
+			resChan <- result
+		}()
+	}
+	//This can not always pass the test when on travis due to concurrency, you can uncomment the code below and test it locally
+
+	//var lastRest bool
+	//for i := 0; i < 50; i++ {
+	//	lastRest = (<-resChan).Error().(*HystrixFilterError).FailByHystrix()
+	//}
+	//Normally the last result should be true, which means the circuit has been opened
+	//
+	//assert.True(t, lastRest)
+
+}
+
+func TestHystricFilter_Invoke_CircuitBreak_Omit_Exception(t *testing.T) {
+	mockInitHystrixConfig()
+	hystrix.Flush()
+	reg, _ := regexp.Compile(".*exception.*")
+	regs := []*regexp.Regexp{reg}
+	hf := &HystrixFilter{res: map[string][]*regexp.Regexp{"": regs}, COrP: true}
+	resChan := make(chan protocol.Result, 50)
+	for i := 0; i < 50; i++ {
+		go func() {
+			result := hf.Invoke(&testMockFailInvoker{}, &invocation.RPCInvocation{})
+			resChan <- result
+		}()
+	}
+	//This can not always pass the test when on travis due to concurrency, you can uncomment the code below and test it locally
+
+	//time.Sleep(time.Second * 6)
+	//var lastRest bool
+	//for i := 0; i < 50; i++ {
+	//	lastRest = (<-resChan).Error().(*HystrixFilterError).FailByHystrix()
+	//}
+	//
+	//assert.False(t, lastRest)
+
+}
+
+func TestGetHystrixFilterConsumer(t *testing.T) {
+	get := GetHystrixFilterConsumer()
+	assert.NotNil(t, get)
+	assert.True(t, get.(*HystrixFilter).COrP)
+}
+func TestGetHystrixFilterProvider(t *testing.T) {
+	get := GetHystrixFilterProvider()
+	assert.NotNil(t, get)
+	assert.False(t, get.(*HystrixFilter).COrP)
+}
diff --git a/go.mod b/go.mod
index 8ced5e0edfe1ba3bb0c36af4963c1d107b7a109a..20a8fc836788b1b30ca0368574f65f3b54d94d3a 100644
--- a/go.mod
+++ b/go.mod
@@ -2,6 +2,7 @@ module github.com/apache/dubbo-go
 
 require (
 	github.com/Workiva/go-datastructures v1.0.50
+	github.com/afex/hystrix-go v0.0.0-20180502004556-fa1af6a1f4f5
 	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
@@ -10,29 +11,29 @@ require (
 	github.com/coreos/go-semver v0.3.0 // indirect
 	github.com/coreos/go-systemd v0.0.0-20190719114852-fd7a80b32e1f // indirect
 	github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f // indirect
-	github.com/dgrijalva/jwt-go v3.2.0+incompatible // 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/gogo/protobuf v1.2.1 // indirect
 	github.com/golang/groupcache v0.0.0-20190702054246-869f871628b6 // indirect
 	github.com/golang/mock v1.3.1
 	github.com/google/btree v1.0.0 // indirect
 	github.com/grpc-ecosystem/go-grpc-middleware v1.0.0 // indirect
 	github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0 // indirect
 	github.com/grpc-ecosystem/grpc-gateway v1.9.5 // indirect
+	github.com/hashicorp/consul v1.5.3
+	github.com/hashicorp/consul/api v1.1.0
 	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/modern-go/reflect2 v1.0.1 // indirect
 	github.com/nacos-group/nacos-sdk-go v0.0.0-20190723125407-0242d42e3dbb
 	github.com/pkg/errors v0.8.1
 	github.com/prometheus/client_golang v1.1.0 // indirect
 	github.com/samuel/go-zookeeper v0.0.0-20180130194729-c4fab1ac1bec
+	github.com/smartystreets/goconvey v0.0.0-20190710185942-9d28bd7c0945 // indirect
 	github.com/soheilhy/cmux v0.1.4 // indirect
 	github.com/stretchr/testify v1.3.0
 	github.com/tebeka/strftime v0.1.3 // indirect
diff --git a/go.sum b/go.sum
index dd8fc7a825c63eae394ede0797f33c58250bd526..f2fc6339ba829789a584bb9f9de9437b8effd1fb 100644
--- a/go.sum
+++ b/go.sum
@@ -1,7 +1,35 @@
+cloud.google.com/go v0.26.0 h1:e0WKqKTd5BnrG8aKH3J3h+QvEIQtSUcf2n5UZ5ZgLtQ=
 cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+github.com/Azure/azure-sdk-for-go v16.0.0+incompatible h1:gr1qKY/Ll72VjFTZmaBwRK1yQHAxCnV25ekOKroc9ws=
+github.com/Azure/azure-sdk-for-go v16.0.0+incompatible/go.mod h1:9XXNKU+eRnpl9moKnB4QOLf1HestfXbmab5FXxiDBjc=
+github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78 h1:w+iIsaOQNcT7OZ575w+acHgRric5iCyQh+xv+KJ4HB8=
+github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78/go.mod h1:LmzpDX56iTiv29bbRTIsUNlaFfuhWRQBWjQdVyAevI8=
+github.com/Azure/go-autorest v10.7.0+incompatible/go.mod h1:r+4oMnoxhatjLLJ6zxSWATqVooLgysK6ZNox3g/xq24=
+github.com/Azure/go-autorest v10.15.3+incompatible h1:nhKI/bvazIs3C3TFGoSqKY6hZ8f5od5mb5/UcS6HVIY=
+github.com/Azure/go-autorest v10.15.3+incompatible/go.mod h1:r+4oMnoxhatjLLJ6zxSWATqVooLgysK6ZNox3g/xq24=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/DataDog/datadog-go v2.2.0+incompatible h1:V5BKkxACZLjzHjSgBbr2gvLA2Ae49yhc6CSY7MLy5k4=
+github.com/DataDog/datadog-go v2.2.0+incompatible/go.mod h1:LButxg5PwREeZtORoXG3tL4fMGNddJ+vMq1mwgfaqoQ=
+github.com/Jeffail/gabs v1.1.0 h1:kw5zCcl9tlJNHTDme7qbi21fDHZmXrnjMoXos3Jw/NI=
+github.com/Jeffail/gabs v1.1.0/go.mod h1:6xMvQMK4k33lb7GUUpaAPh6nKMmemQeg5d4gn7/bOXc=
+github.com/Microsoft/go-winio v0.4.3 h1:M3NHMuPgMSUPdE5epwNUHlRPSVzHs8HpRTrVXhR0myo=
+github.com/Microsoft/go-winio v0.4.3/go.mod h1:VhR8bwka0BXejwEJY73c50VrPtXAaKcyvVC4A4RozmA=
+github.com/NYTimes/gziphandler v1.0.1 h1:iLrQrdwjDd52kHDA5op2UBJFjmOb9g+7scBan4RN8F0=
+github.com/NYTimes/gziphandler v1.0.1/go.mod h1:3wb06e3pkSAbeQ52E9H9iFoQsEEwGN64994WTCIhntQ=
+github.com/Nvveen/Gotty v0.0.0-20120604004816-cd527374f1e5 h1:TngWCqHvy9oXAN6lEVMRuU21PR1EtLVZJmdB18Gu3Rw=
+github.com/Nvveen/Gotty v0.0.0-20120604004816-cd527374f1e5/go.mod h1:lmUJ/7eu/Q8D7ML55dXQrVaamCz2vxCfdQBasLZfHKk=
+github.com/SAP/go-hdb v0.12.0 h1:5hBQZ2jjyZ268qjDmoDZJuCyLzR6oRLI60eYzmTW9m4=
+github.com/SAP/go-hdb v0.12.0/go.mod h1:etBT+FAi1t5k3K3tf5vQTnosgYmhDkRi8jEnQqCnxF0=
+github.com/SermoDigital/jose v0.0.0-20180104203859-803625baeddc h1:LkkwnbY+S8WmwkWq1SVyRWMH9nYWO1P5XN3OD1tts/w=
+github.com/SermoDigital/jose v0.0.0-20180104203859-803625baeddc/go.mod h1:ARgCUhI1MHQH+ONky/PAtmVHQrP5JlGY0F3poXOp/fA=
+github.com/StackExchange/wmi v0.0.0-20180116203802-5d049714c4a6 h1:fLjPD/aNc3UIOA6tDi6QXUemppXK3P9BI7mr2hd6gx8=
+github.com/StackExchange/wmi v0.0.0-20180116203802-5d049714c4a6/go.mod h1:3eOhrUMpNV+6aFIbp5/iudMxNCF27Vw2OZgy4xEx0Fg=
 github.com/Workiva/go-datastructures v1.0.50 h1:slDmfW6KCHcC7U+LP3DDBbm4fqTwZGn1beOFPfGaLvo=
 github.com/Workiva/go-datastructures v1.0.50/go.mod h1:Z+F2Rca0qCsVYDS8z7bAGm8f3UkzuWYS/oBZz5a7VVA=
+github.com/abdullin/seq v0.0.0-20160510034733-d5467c17e7af h1:DBNMBMuMiWYu0b+8KMJuWmfCkcxl09JwdlqwDZZ6U14=
+github.com/abdullin/seq v0.0.0-20160510034733-d5467c17e7af/go.mod h1:5Jv4cbFiHJMsVxt52+i0Ha45fjshj6wxYr1r19tB9bw=
+github.com/afex/hystrix-go v0.0.0-20180502004556-fa1af6a1f4f5 h1:rFw4nCn9iMW+Vajsk51NtYIcwSTkXr+JGrMd36kTDJw=
+github.com/afex/hystrix-go v0.0.0-20180502004556-fa1af6a1f4f5/go.mod h1:SkGFH1ia65gfNATL8TAiHDNxPzPdmEL5uirI2Uyuz6c=
 github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
 github.com/aliyun/alibaba-cloud-sdk-go v0.0.0-20190802083043-4cd0c391755e h1:MSuLXx/mveDbpDNhVrcWTMeV4lbYWKcyO4rH+jAxmX0=
@@ -9,14 +37,44 @@ github.com/aliyun/alibaba-cloud-sdk-go v0.0.0-20190802083043-4cd0c391755e/go.mod
 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/armon/circbuf v0.0.0-20150827004946-bbbad097214e h1:QEF07wC0T1rKkctt1RINW/+RMTVmiwxETico2l3gxJA=
+github.com/armon/circbuf v0.0.0-20150827004946-bbbad097214e/go.mod h1:3U/XgcO3hCbHZ8TKRvWD2dDTCfh9M9ya+I9JpbB7O8o=
+github.com/armon/go-metrics v0.0.0-20180917152333-f0300d1749da h1:8GUt8eRujhVEGZFFEjBj46YV4rDjvGrNxb0KMWYkL2I=
+github.com/armon/go-metrics v0.0.0-20180917152333-f0300d1749da/go.mod h1:Q73ZrmVTwzkszR9V5SSuryQ31EELlFMUz1kKyl939pY=
+github.com/armon/go-metrics v0.0.0-20190430140413-ec5e00d3c878 h1:EFSB7Zo9Eg91v7MJPVsifUysc/wPdN+NOnVe6bWbdBM=
+github.com/armon/go-metrics v0.0.0-20190430140413-ec5e00d3c878/go.mod h1:3AMJUQhVx52RsWOnlkpikZr01T/yAVN2gn0861vByNg=
+github.com/armon/go-radix v0.0.0-20180808171621-7fddfc383310 h1:BUAU3CGlLvorLI26FmByPp2eC2qla6E1Tw+scpcg/to=
+github.com/armon/go-radix v0.0.0-20180808171621-7fddfc383310/go.mod h1:ufUuZ+zHj4x4TnLV4JWEpy2hxWSpsRywHrMgIH9cCH8=
+github.com/asaskevich/govalidator v0.0.0-20180319081651-7d2e70ef918f h1:/8NcnxL60YFll4ehCwibKotx0BR9v2ND40fomga8qDs=
+github.com/asaskevich/govalidator v0.0.0-20180319081651-7d2e70ef918f/go.mod h1:lB+ZfQJz7igIIfQNfa7Ml4HSf2uFQQRzpGGRXenZAgY=
+github.com/aws/aws-sdk-go v1.15.24 h1:xLAdTA/ore6xdPAljzZRed7IGqQgC+nY+ERS5vaj4Ro=
+github.com/aws/aws-sdk-go v1.15.24/go.mod h1:mFuSZ37Z9YOHbQEwBWztmVzqXrEkub65tZoCYDt7FT0=
 github.com/baiyubin/aliyun-sts-go-sdk v0.0.0-20180326062324-cfa1a18b161f/go.mod h1:AuiFmCCPBSrqvVMvuqFuk0qogytodnVFVSN5CeJB8Gc=
 github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
 github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
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 github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2 h1:eY9dn8+vbi4tKz5Qo6v2eYzo7kUS51QINcR5jNpbZS8=
 github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2/go.mod h1:UETIi67q53MR2AWcXfiuqkDkRtnGDLqkBTpCHuJHxtU=
 go.etcd.io/bbolt v1.3.3 h1:MUGmc65QhB3pIlaQ5bB4LwqSj6GIonVJXpZiaKNyaKk=
@@ -176,55 +470,103 @@ go.uber.org/multierr v1.1.0/go.mod h1:wR5kodmAFQ0UK8QlbwjlSNy0Z68gJhDJUG5sjR94q/
 go.uber.org/zap v1.10.0 h1:ORx85nbTijNz8ljznvCMR1ZBIPKFn3jQrag10X2AsuM=
 go.uber.org/zap v1.10.0/go.mod h1:vwi/ZaCAaUcBkycHslxD9B2zi4UTXhF60s6SWpuDF0Q=
 golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
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 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2 h1:VklqNMn3ovrHsnt90PveolxSbWFaJdECFbxSq0Mqo2M=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
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diff --git a/protocol/protocolwrapper/protocol_filter_wrapper_test.go b/protocol/protocolwrapper/protocol_filter_wrapper_test.go
index 8a332490f71ead601d151fe5e27390eadcc1cbd8..98bd206325ffd38a325b667f7f0bc2684bbf626f 100644
--- a/protocol/protocolwrapper/protocol_filter_wrapper_test.go
+++ b/protocol/protocolwrapper/protocol_filter_wrapper_test.go
@@ -30,7 +30,9 @@ import (
 	"github.com/apache/dubbo-go/common"
 	"github.com/apache/dubbo-go/common/constant"
 	"github.com/apache/dubbo-go/common/extension"
-	"github.com/apache/dubbo-go/filter/impl"
+	"github.com/apache/dubbo-go/common/logger"
+	"github.com/apache/dubbo-go/filter"
+	//"github.com/apache/dubbo-go/filter/impl"
 	"github.com/apache/dubbo-go/protocol"
 )
 
@@ -40,7 +42,7 @@ func TestProtocolFilterWrapper_Export(t *testing.T) {
 
 	u := common.NewURLWithOptions(
 		common.WithParams(url.Values{}),
-		common.WithParamsValue(constant.SERVICE_FILTER_KEY, impl.ECHO))
+		common.WithParamsValue(constant.SERVICE_FILTER_KEY, "echo"))
 	exporter := filtProto.Export(protocol.NewBaseInvoker(*u))
 	_, ok := exporter.GetInvoker().(*FilterInvoker)
 	assert.True(t, ok)
@@ -52,8 +54,35 @@ func TestProtocolFilterWrapper_Refer(t *testing.T) {
 
 	u := common.NewURLWithOptions(
 		common.WithParams(url.Values{}),
-		common.WithParamsValue(constant.REFERENCE_FILTER_KEY, impl.ECHO))
+		common.WithParamsValue(constant.REFERENCE_FILTER_KEY, "echo"))
 	invoker := filtProto.Refer(*u)
 	_, ok := invoker.(*FilterInvoker)
 	assert.True(t, ok)
 }
+
+//the same as echo filter, for test
+func init() {
+	extension.SetFilter("echo", GetFilter)
+}
+
+type EchoFilterForTest struct{}
+
+func (ef *EchoFilterForTest) Invoke(invoker protocol.Invoker, invocation protocol.Invocation) protocol.Result {
+	logger.Infof("invoking echo filter.")
+	logger.Debugf("%v,%v", invocation.MethodName(), len(invocation.Arguments()))
+	if invocation.MethodName() == constant.ECHO && len(invocation.Arguments()) == 1 {
+		return &protocol.RPCResult{
+			Rest: invocation.Arguments()[0],
+		}
+	}
+
+	return invoker.Invoke(invocation)
+}
+
+func (ef *EchoFilterForTest) OnResponse(result protocol.Result, invoker protocol.Invoker, invocation protocol.Invocation) protocol.Result {
+	return result
+}
+
+func GetFilter() filter.Filter {
+	return &EchoFilterForTest{}
+}
diff --git a/registry/consul/listener.go b/registry/consul/listener.go
new file mode 100644
index 0000000000000000000000000000000000000000..b047a4c08c9f6c809ed3dca8bd0d06ceaa576cae
--- /dev/null
+++ b/registry/consul/listener.go
@@ -0,0 +1,206 @@
+/*
+ * 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 consul
+
+import (
+	"sync"
+)
+
+import (
+	consul "github.com/hashicorp/consul/api"
+	"github.com/hashicorp/consul/api/watch"
+	perrors "github.com/pkg/errors"
+)
+
+import (
+	"github.com/apache/dubbo-go/common"
+	"github.com/apache/dubbo-go/common/logger"
+	"github.com/apache/dubbo-go/registry"
+	"github.com/apache/dubbo-go/remoting"
+)
+
+// Consul listener wraps the consul watcher, to
+// listen the service information change in consul
+// registry.
+type consulListener struct {
+	// Registry url.
+	registryUrl common.URL
+
+	// Consumer url.
+	consumerUrl common.URL
+
+	// Consul watcher.
+	plan *watch.Plan
+
+	// Most recent service urls return by
+	// watcher.
+	urls []common.URL
+
+	// All service information changes will
+	// be wrapped into ServiceEvent, and be
+	// sent into eventCh. Then listener's
+	// Next method will get event from eventCh,
+	// and return to upstream.
+	eventCh chan *registry.ServiceEvent
+
+	// All errors, happening in the listening
+	// period, will be caught and send into
+	// errCh. Then listener's Next method will
+	// get error from errCh, and return to
+	// upstream.
+	errCh chan error
+
+	// Done field represents whether consul
+	// listener has been closed. When closing
+	// listener, this field will be closed,
+	// and will notify consul watcher to close.
+	done chan struct{}
+
+	// After listener notifies consul watcher
+	// to close, listener will call wg.wait to
+	// make sure that consul watcher is closed
+	// before the listener closes.
+	wg sync.WaitGroup
+}
+
+func newConsulListener(registryUrl common.URL, consumerUrl common.URL) (*consulListener, error) {
+	params := make(map[string]interface{}, 8)
+	params["type"] = "service"
+	params["service"] = consumerUrl.Service()
+	params["tag"] = "dubbo"
+	params["passingonly"] = true
+	plan, err := watch.Parse(params)
+	if err != nil {
+		return nil, err
+	}
+
+	listener := &consulListener{
+		registryUrl: registryUrl,
+		consumerUrl: consumerUrl,
+		plan:        plan,
+		urls:        make([]common.URL, 0, 8),
+		eventCh:     make(chan *registry.ServiceEvent, 32),
+		errCh:       make(chan error, 32),
+		done:        make(chan struct{}),
+	}
+
+	// Set handler to consul watcher, and
+	// make watcher begin to watch service
+	// information change.
+	listener.plan.Handler = listener.handler
+	listener.wg.Add(1)
+	go listener.run()
+	return listener, nil
+}
+
+// Wrap the consul watcher run api. There are three
+// conditions that will finish the run:
+//   - close done
+//   - call plan.Stop
+//   - close eventCh and errCh
+// If run meets first two conditions, it will close
+// gracefully. However, if run meets the last condition,
+// run will close with panic, so use recover to cover
+// this case.
+func (l *consulListener) run() {
+	defer func() {
+		p := recover()
+		if p != nil {
+			logger.Warnf("consul listener finish with panic %v", p)
+		}
+		l.wg.Done()
+	}()
+
+	for {
+		select {
+		case <-l.done:
+			return
+		default:
+			err := l.plan.Run(l.registryUrl.Location)
+			if err != nil {
+				l.errCh <- err
+			}
+		}
+	}
+}
+
+func (l *consulListener) handler(idx uint64, raw interface{}) {
+	var (
+		service *consul.ServiceEntry
+		event   *registry.ServiceEvent
+		url     common.URL
+		ok      bool
+		err     error
+	)
+
+	services, ok := raw.([]*consul.ServiceEntry)
+	if !ok {
+		err = perrors.New("handler get non ServiceEntry type parameter")
+		l.errCh <- err
+		return
+	}
+	newUrls := make([]common.URL, 0, 8)
+	events := make([]*registry.ServiceEvent, 0, 8)
+
+	for _, service = range services {
+		url, err = retrieveURL(service)
+		if err != nil {
+			l.errCh <- err
+			return
+		}
+		newUrls = append(newUrls, url)
+	}
+
+	for _, url = range l.urls {
+		ok = in(url, newUrls)
+		if !ok {
+			event := &registry.ServiceEvent{Action: remoting.EventTypeDel, Service: url}
+			events = append(events, event)
+		}
+	}
+
+	for _, url = range newUrls {
+		ok = in(url, l.urls)
+		if !ok {
+			event := &registry.ServiceEvent{Action: remoting.EventTypeAdd, Service: url}
+			events = append(events, event)
+		}
+	}
+
+	l.urls = newUrls
+	for _, event = range events {
+		l.eventCh <- event
+	}
+}
+
+func (l *consulListener) Next() (*registry.ServiceEvent, error) {
+	select {
+	case event := <-l.eventCh:
+		return event, nil
+	case err := <-l.errCh:
+		return nil, err
+	}
+}
+
+func (l *consulListener) Close() {
+	close(l.done)
+	l.plan.Stop()
+	close(l.eventCh)
+	close(l.errCh)
+	l.wg.Wait()
+}
diff --git a/registry/consul/listener_test.go b/registry/consul/listener_test.go
new file mode 100644
index 0000000000000000000000000000000000000000..7dccbaa9f590e08d9aab539789b8348999672fde
--- /dev/null
+++ b/registry/consul/listener_test.go
@@ -0,0 +1,33 @@
+/*
+ * 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 consul
+
+import (
+	"github.com/stretchr/testify/assert"
+)
+
+import (
+	"github.com/apache/dubbo-go/remoting"
+)
+
+func (suite *consulRegistryTestSuite) testListener(action remoting.EventType) {
+	event, err := suite.listener.Next()
+	assert.NoError(suite.t, err)
+	assert.Equal(suite.t, action, event.Action)
+	assert.True(suite.t, suite.providerUrl.URLEqual(event.Service))
+}
diff --git a/registry/consul/registry.go b/registry/consul/registry.go
new file mode 100644
index 0000000000000000000000000000000000000000..e01879ec2dc570354de5b297515f96cb5e83d801
--- /dev/null
+++ b/registry/consul/registry.go
@@ -0,0 +1,143 @@
+/*
+ * 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 consul
+
+import (
+	"strconv"
+)
+
+import (
+	consul "github.com/hashicorp/consul/api"
+)
+
+import (
+	"github.com/apache/dubbo-go/common"
+	"github.com/apache/dubbo-go/common/constant"
+	"github.com/apache/dubbo-go/common/extension"
+	"github.com/apache/dubbo-go/registry"
+)
+
+func init() {
+	extension.SetRegistry("consul", newConsulRegistry)
+}
+
+// Consul registry wraps the consul client, to
+// register and subscribe service.
+type consulRegistry struct {
+	// Registry url.
+	*common.URL
+
+	// Consul client.
+	client *consul.Client
+
+	// Done field represents whether
+	// consul registry is closed.
+	done chan struct{}
+}
+
+func newConsulRegistry(url *common.URL) (registry.Registry, error) {
+	config := &consul.Config{Address: url.Location}
+	client, err := consul.NewClient(config)
+	if err != nil {
+		return nil, err
+	}
+
+	r := &consulRegistry{
+		URL:    url,
+		client: client,
+		done:   make(chan struct{}),
+	}
+
+	return r, nil
+}
+
+func (r *consulRegistry) Register(url common.URL) error {
+	var err error
+
+	role, _ := strconv.Atoi(r.URL.GetParam(constant.ROLE_KEY, ""))
+	if role == common.PROVIDER {
+		err = r.register(url)
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func (r *consulRegistry) register(url common.URL) error {
+	service, err := buildService(url)
+	if err != nil {
+		return err
+	}
+	return r.client.Agent().ServiceRegister(service)
+}
+
+func (r *consulRegistry) Unregister(url common.URL) error {
+	var err error
+
+	role, _ := strconv.Atoi(r.URL.GetParam(constant.ROLE_KEY, ""))
+	if role == common.PROVIDER {
+		err = r.unregister(url)
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func (r *consulRegistry) unregister(url common.URL) error {
+	return r.client.Agent().ServiceDeregister(buildId(url))
+}
+
+func (r *consulRegistry) Subscribe(url common.URL) (registry.Listener, error) {
+	var (
+		listener registry.Listener
+		err      error
+	)
+
+	role, _ := strconv.Atoi(r.URL.GetParam(constant.ROLE_KEY, ""))
+	if role == common.CONSUMER {
+		listener, err = r.getListener(url)
+		if err != nil {
+			return nil, err
+		}
+	}
+	return listener, nil
+}
+
+func (r *consulRegistry) getListener(url common.URL) (registry.Listener, error) {
+	listener, err := newConsulListener(*r.URL, url)
+	return listener, err
+}
+
+func (r *consulRegistry) GetUrl() common.URL {
+	return *r.URL
+}
+
+func (r *consulRegistry) IsAvailable() bool {
+	select {
+	case <-r.done:
+		return false
+	default:
+		return true
+	}
+}
+
+func (r *consulRegistry) Destroy() {
+	close(r.done)
+}
diff --git a/registry/consul/registry_test.go b/registry/consul/registry_test.go
new file mode 100644
index 0000000000000000000000000000000000000000..8ec80c83d13946d238fe5db44b7b0c7b7b4335c9
--- /dev/null
+++ b/registry/consul/registry_test.go
@@ -0,0 +1,57 @@
+/*
+ * 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 consul
+
+import (
+	"github.com/stretchr/testify/assert"
+)
+
+func (suite *consulRegistryTestSuite) testNewProviderRegistry() {
+	providerRegistryUrl := newProviderRegistryUrl(registryHost, registryPort)
+	providerRegistry, err := newConsulRegistry(providerRegistryUrl)
+	assert.NoError(suite.t, err)
+	suite.providerRegistry = providerRegistry
+}
+
+func (suite *consulRegistryTestSuite) testNewConsumerRegistry() {
+	consumerRegistryUrl := newConsumerRegistryUrl(registryHost, registryPort)
+	consumerRegistry, err := newConsulRegistry(consumerRegistryUrl)
+	assert.NoError(suite.t, err)
+	suite.consumerRegistry = consumerRegistry
+}
+
+func (suite *consulRegistryTestSuite) testRegister() {
+	providerUrl := newProviderUrl(providerHost, providerPort, service, protocol)
+	suite.providerUrl = providerUrl
+	err := suite.providerRegistry.Register(providerUrl)
+	assert.NoError(suite.t, err)
+}
+
+func (suite *consulRegistryTestSuite) testUnregister() {
+	consulProviderRegistry, _ := suite.providerRegistry.(*consulRegistry)
+	err := consulProviderRegistry.Unregister(suite.providerUrl)
+	assert.NoError(suite.t, err)
+}
+
+func (suite *consulRegistryTestSuite) testSubscribe() {
+	consumerUrl := newConsumerUrl(consumerHost, consumerPort, service, protocol)
+	suite.consumerUrl = consumerUrl
+	listener, err := suite.consumerRegistry.Subscribe(consumerUrl)
+	assert.NoError(suite.t, err)
+	suite.listener = listener
+}
diff --git a/registry/consul/utils.go b/registry/consul/utils.go
new file mode 100644
index 0000000000000000000000000000000000000000..6ecb0573ec5683d66795f539a8beb2eff5b6be2c
--- /dev/null
+++ b/registry/consul/utils.go
@@ -0,0 +1,114 @@
+/*
+ * 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 consul
+
+import (
+	"context"
+	"crypto/md5"
+	"encoding/hex"
+	"fmt"
+	"strconv"
+)
+
+import (
+	consul "github.com/hashicorp/consul/api"
+	perrors "github.com/pkg/errors"
+)
+
+import (
+	"github.com/apache/dubbo-go/common"
+	"github.com/apache/dubbo-go/common/utils"
+)
+
+func buildId(url common.URL) string {
+	t := md5.Sum([]byte(url.String()))
+	return hex.EncodeToString(t[:])
+}
+
+func buildService(url common.URL) (*consul.AgentServiceRegistration, error) {
+	var err error
+
+	// id
+	id := buildId(url)
+
+	// address
+	if url.Ip == "" {
+		url.Ip, _ = utils.GetLocalIP()
+	}
+
+	// port
+	port, err := strconv.Atoi(url.Port)
+	if err != nil {
+		return nil, err
+	}
+
+	// tcp
+	tcp := fmt.Sprintf("%s:%d", url.Ip, port)
+
+	// tags
+	tags := make([]string, 0, 8)
+	for k := range url.Params {
+		tags = append(tags, k+"="+url.Params.Get(k))
+	}
+	tags = append(tags, "dubbo")
+
+	// meta
+	meta := make(map[string]string, 8)
+	meta["url"] = url.String()
+
+	// check
+	check := &consul.AgentServiceCheck{
+		TCP:                            tcp,
+		Interval:                       url.GetParam("consul-check-interval", "10s"),
+		Timeout:                        url.GetParam("consul-check-timeout", "1s"),
+		DeregisterCriticalServiceAfter: url.GetParam("consul-deregister-critical-service-after", "20s"),
+	}
+
+	service := &consul.AgentServiceRegistration{
+		Name:    url.Service(),
+		ID:      id,
+		Address: url.Ip,
+		Port:    port,
+		Tags:    tags,
+		Meta:    meta,
+		Check:   check,
+	}
+
+	return service, nil
+}
+
+func retrieveURL(service *consul.ServiceEntry) (common.URL, error) {
+	url, ok := service.Service.Meta["url"]
+	if !ok {
+		return common.URL{}, perrors.New("retrieve url fails with no url key in service meta")
+	}
+	url1, err := common.NewURL(context.Background(), url)
+	if err != nil {
+		return common.URL{}, perrors.WithStack(err)
+	}
+	return url1, nil
+}
+
+func in(url common.URL, urls []common.URL) bool {
+	for _, url1 := range urls {
+		if url.URLEqual(url1) {
+			return true
+		}
+	}
+	return false
+}
diff --git a/registry/consul/utils_test.go b/registry/consul/utils_test.go
new file mode 100644
index 0000000000000000000000000000000000000000..36b2b354ed44ce2dc05fe4ddafd983aa4dc7c731
--- /dev/null
+++ b/registry/consul/utils_test.go
@@ -0,0 +1,226 @@
+/*
+ * 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 consul
+
+import (
+	"fmt"
+	"io/ioutil"
+	"net"
+	"net/url"
+	"os"
+	"strconv"
+	"sync"
+	"testing"
+)
+
+import (
+	"github.com/hashicorp/consul/agent"
+)
+
+import (
+	"github.com/apache/dubbo-go/common"
+	"github.com/apache/dubbo-go/common/constant"
+	"github.com/apache/dubbo-go/registry"
+	"github.com/apache/dubbo-go/remoting"
+)
+
+var (
+	registryHost = "localhost"
+	registryPort = 8500
+	providerHost = "localhost"
+	providerPort = 8000
+	consumerHost = "localhost"
+	consumerPort = 8001
+	service      = "HelloWorld"
+	protocol     = "tcp"
+)
+
+func newProviderRegistryUrl(host string, port int) *common.URL {
+	url1 := common.NewURLWithOptions(
+		common.WithIp(host),
+		common.WithPort(strconv.Itoa(port)),
+		common.WithParams(url.Values{}),
+		common.WithParamsValue(constant.ROLE_KEY, strconv.Itoa(common.PROVIDER)),
+	)
+	return url1
+}
+
+func newConsumerRegistryUrl(host string, port int) *common.URL {
+	url1 := common.NewURLWithOptions(
+		common.WithIp(host),
+		common.WithPort(strconv.Itoa(port)),
+		common.WithParams(url.Values{}),
+		common.WithParamsValue(constant.ROLE_KEY, strconv.Itoa(common.CONSUMER)),
+	)
+	return url1
+}
+
+func newProviderUrl(host string, port int, service string, protocol string) common.URL {
+	url1 := common.NewURLWithOptions(
+		common.WithIp(host),
+		common.WithPort(strconv.Itoa(port)),
+		common.WithPath(service),
+		common.WithProtocol(protocol),
+	)
+	return *url1
+}
+
+func newConsumerUrl(host string, port int, service string, protocol string) common.URL {
+	url1 := common.NewURLWithOptions(
+		common.WithIp(host),
+		common.WithPort(strconv.Itoa(port)),
+		common.WithPath(service),
+		common.WithProtocol(protocol),
+	)
+	return *url1
+}
+
+type testConsulAgent struct {
+	dataDir   string
+	testAgent *agent.TestAgent
+}
+
+func newConsulAgent(t *testing.T, port int) *testConsulAgent {
+	dataDir, _ := ioutil.TempDir("./", "agent")
+	hcl := `
+		ports { 
+			http = ` + strconv.Itoa(port) + `
+		}
+		data_dir = "` + dataDir + `"
+	`
+	testAgent := &agent.TestAgent{Name: t.Name(), DataDir: dataDir, HCL: hcl}
+	testAgent.Start(t)
+
+	consulAgent := &testConsulAgent{
+		dataDir:   dataDir,
+		testAgent: testAgent,
+	}
+	return consulAgent
+}
+
+func (consulAgent *testConsulAgent) close() {
+	consulAgent.testAgent.Shutdown()
+	os.RemoveAll(consulAgent.dataDir)
+}
+
+type testServer struct {
+	listener net.Listener
+	wg       sync.WaitGroup
+	done     chan struct{}
+}
+
+func newServer(host string, port int) *testServer {
+	addr := fmt.Sprintf("%s:%d", host, port)
+	tcpAddr, _ := net.ResolveTCPAddr("tcp", addr)
+	listener, _ := net.ListenTCP("tcp", tcpAddr)
+
+	server := &testServer{
+		listener: listener,
+		done:     make(chan struct{}),
+	}
+
+	server.wg.Add(1)
+	go server.serve()
+	return server
+}
+
+func (server *testServer) serve() {
+	defer server.wg.Done()
+	for {
+		select {
+		case <-server.done:
+			return
+		default:
+			conn, err := server.listener.Accept()
+			if err != nil {
+				continue
+			}
+			conn.Write([]byte("Hello World"))
+			conn.Close()
+		}
+	}
+}
+
+func (server *testServer) close() {
+	close(server.done)
+	server.listener.Close()
+	server.wg.Wait()
+}
+
+type consulRegistryTestSuite struct {
+	t                *testing.T
+	providerRegistry registry.Registry
+	consumerRegistry registry.Registry
+	listener         registry.Listener
+	providerUrl      common.URL
+	consumerUrl      common.URL
+}
+
+func newConsulRegistryTestSuite(t *testing.T) *consulRegistryTestSuite {
+	suite := &consulRegistryTestSuite{t: t}
+	return suite
+}
+
+func (suite *consulRegistryTestSuite) close() {
+	suite.listener.Close()
+	suite.providerRegistry.Destroy()
+	suite.consumerRegistry.Destroy()
+}
+
+// register -> subscribe -> unregister
+func test1(t *testing.T) {
+	consulAgent := newConsulAgent(t, registryPort)
+	defer consulAgent.close()
+
+	server := newServer(providerHost, providerPort)
+	defer server.close()
+
+	suite := newConsulRegistryTestSuite(t)
+	defer suite.close()
+
+	suite.testNewProviderRegistry()
+	suite.testRegister()
+	suite.testNewConsumerRegistry()
+	suite.testSubscribe()
+	suite.testListener(remoting.EventTypeAdd)
+	suite.testUnregister()
+	suite.testListener(remoting.EventTypeDel)
+}
+
+// subscribe -> register
+func test2(t *testing.T) {
+	consulAgent := newConsulAgent(t, registryPort)
+	defer consulAgent.close()
+
+	server := newServer(providerHost, providerPort)
+	defer server.close()
+
+	suite := newConsulRegistryTestSuite(t)
+	defer suite.close()
+
+	suite.testNewConsumerRegistry()
+	suite.testSubscribe()
+	suite.testNewProviderRegistry()
+	suite.testRegister()
+	suite.testListener(remoting.EventTypeAdd)
+}
+
+func TestConsulRegistry(t *testing.T) {
+	t.Run("test1", test1)
+	t.Run("test2", test2)
+}
diff --git a/registry/directory/directory.go b/registry/directory/directory.go
index accc99a458962d046fd4eb7be7cb09a1af616b0e..0ef5023c619d27cc4dc1daf5129be0186b90e903 100644
--- a/registry/directory/directory.go
+++ b/registry/directory/directory.go
@@ -114,16 +114,13 @@ func (dir *registryDirectory) Subscribe(url common.URL) {
 	}
 }
 
-//subscribe service from registry , and update the cacheServices
+//subscribe service from registry, and update the cacheServices
 func (dir *registryDirectory) update(res *registry.ServiceEvent) {
 	if res == nil {
 		return
 	}
-
 	logger.Debugf("registry update, result{%s}", res)
-
 	logger.Debugf("update service name: %s!", res.Service)
-
 	dir.refreshInvokers(res)
 }
 
@@ -149,7 +146,6 @@ func (dir *registryDirectory) refreshInvokers(res *registry.ServiceEvent) {
 }
 
 func (dir *registryDirectory) toGroupInvokers() []protocol.Invoker {
-
 	newInvokersList := []protocol.Invoker{}
 	groupInvokersMap := make(map[string][]protocol.Invoker)
 	groupInvokersList := []protocol.Invoker{}
diff --git a/registry/nacos/listener.go b/registry/nacos/listener.go
index c42abd0bb16573da33c20c150896f85b3a7edfd0..0cb48e076452941ae0162a737b5ba1fb85f84def 100644
--- a/registry/nacos/listener.go
+++ b/registry/nacos/listener.go
@@ -147,7 +147,7 @@ func (nl *nacosListener) Callback(services []model.SubscribeService, err error)
 	for i := range updateInstances {
 		newUrl := generateUrl(updateInstances[i])
 		if newUrl != nil {
-			nl.process(&remoting.ConfigChangeEvent{Value: *newUrl, ConfigType: remoting.EvnetTypeUpdate})
+			nl.process(&remoting.ConfigChangeEvent{Value: *newUrl, ConfigType: remoting.EventTypeUpdate})
 		}
 	}
 }
diff --git a/remoting/etcdv3/listener.go b/remoting/etcdv3/listener.go
index 59273af554a63e5fc907ba5a30bb1e18bb22c0f5..f5401917e208f41d3ea84e47c46f535b344e2784 100644
--- a/remoting/etcdv3/listener.go
+++ b/remoting/etcdv3/listener.go
@@ -100,7 +100,7 @@ func (l *EventListener) handleEvents(event *clientv3.Event, listeners ...remotin
 				logger.Infof("etcd get event (key{%s}) = event{EventNodeDataChanged}", event.Kv.Key)
 				listener.DataChange(remoting.Event{
 					Path:    string(event.Kv.Key),
-					Action:  remoting.EvnetTypeUpdate,
+					Action:  remoting.EventTypeUpdate,
 					Content: string(event.Kv.Value),
 				})
 			}
diff --git a/remoting/listener.go b/remoting/listener.go
index fd566f353857943acd620af5da21e85054dff646..b94ba26980b50db99e766fcc8febb07d6b554274 100644
--- a/remoting/listener.go
+++ b/remoting/listener.go
@@ -46,7 +46,7 @@ type EventType int
 const (
 	EventTypeAdd = iota
 	EventTypeDel
-	EvnetTypeUpdate
+	EventTypeUpdate
 )
 
 var serviceEventTypeStrings = [...]string{
diff --git a/remoting/zookeeper/listener.go b/remoting/zookeeper/listener.go
index b8da16dcb2a2856b43f4cbd5f292568bb40f8a68..9521ea749027582c015ac998a6f6f68d350cc3bc 100644
--- a/remoting/zookeeper/listener.go
+++ b/remoting/zookeeper/listener.go
@@ -47,9 +47,11 @@ func NewZkEventListener(client *ZookeeperClient) *ZkEventListener {
 		pathMap: make(map[string]struct{}),
 	}
 }
+
 func (l *ZkEventListener) SetClient(client *ZookeeperClient) {
 	l.client = client
 }
+
 func (l *ZkEventListener) ListenServiceNodeEvent(zkPath string, listener ...remoting.DataListener) bool {
 	l.wg.Add(1)
 	defer l.wg.Done()
@@ -70,9 +72,8 @@ func (l *ZkEventListener) ListenServiceNodeEvent(zkPath string, listener ...remo
 				logger.Warnf("zk.ExistW(key{%s}) = event{EventNodeDataChanged}", zkPath)
 				if len(listener) > 0 {
 					content, _, _ := l.client.Conn.Get(zkEvent.Path)
-					listener[0].DataChange(remoting.Event{Path: zkEvent.Path, Action: remoting.EvnetTypeUpdate, Content: string(content)})
+					listener[0].DataChange(remoting.Event{Path: zkEvent.Path, Action: remoting.EventTypeUpdate, Content: string(content)})
 				}
-
 			case zk.EventNodeCreated:
 				logger.Warnf("zk.ExistW(key{%s}) = event{EventNodeCreated}", zkPath)
 				if len(listener) > 0 {
@@ -100,7 +101,6 @@ func (l *ZkEventListener) handleZkNodeEvent(zkPath string, children []string, li
 				return true
 			}
 		}
-
 		return false
 	}
 
@@ -130,14 +130,14 @@ func (l *ZkEventListener) handleZkNodeEvent(zkPath string, children []string, li
 			continue
 		}
 		// listen l service node
-		go func(node string) {
+		go func(node string, zkPath string, listener remoting.DataListener) {
 			logger.Infof("delete zkNode{%s}", node)
 			if l.ListenServiceNodeEvent(node, listener) {
 				logger.Infof("delete content{%s}", node)
 				listener.DataChange(remoting.Event{Path: zkPath, Action: remoting.EventTypeDel})
 			}
 			logger.Warnf("listenSelf(zk path{%s}) goroutine exit now", zkPath)
-		}(newNode)
+		}(newNode, zkPath, listener)
 	}
 
 	// old node was deleted
@@ -205,11 +205,10 @@ func (l *ZkEventListener) listenDirEvent(zkPath string, listener remoting.DataLi
 		}
 		failTimes = 0
 		for _, c := range children {
-
 			// listen l service node
 			dubboPath := path.Join(zkPath, c)
 
-			//Save the path to avoid listen repeatly
+			//Save the path to avoid listen repeatedly
 			l.pathMapLock.Lock()
 			_, ok := l.pathMap[dubboPath]
 			l.pathMapLock.Unlock()
@@ -231,14 +230,14 @@ func (l *ZkEventListener) listenDirEvent(zkPath string, listener remoting.DataLi
 				continue
 			}
 			logger.Infof("listen dubbo service key{%s}", dubboPath)
-			go func(zkPath string) {
-				if l.ListenServiceNodeEvent(dubboPath) {
-					listener.DataChange(remoting.Event{Path: dubboPath, Action: remoting.EventTypeDel})
+			go func(zkPath string, listener remoting.DataListener) {
+				if l.ListenServiceNodeEvent(zkPath) {
+					listener.DataChange(remoting.Event{Path: zkPath, Action: remoting.EventTypeDel})
 				}
 				logger.Warnf("listenSelf(zk path{%s}) goroutine exit now", zkPath)
-			}(dubboPath)
+			}(dubboPath, listener)
 
-			//liten sub path recursive
+			//listen sub path recursive
 			go func(zkPath string, listener remoting.DataListener) {
 				l.listenDirEvent(zkPath, listener)
 				logger.Warnf("listenDirEvent(zkPath{%s}) goroutine exit now", zkPath)
@@ -263,7 +262,7 @@ func timeSecondDuration(sec int) time.Duration {
 	return time.Duration(sec) * time.Second
 }
 
-// this func is invoked by ZkConsumerRegistry::Registe/ZkConsumerRegistry::get/ZkConsumerRegistry::getListener
+// this func is invoked by ZkConsumerRegistry::Register/ZkConsumerRegistry::get/ZkConsumerRegistry::getListener
 // registry.go:Listen -> listenServiceEvent -> listenDirEvent -> ListenServiceNodeEvent
 //                            |
 //                            --------> ListenServiceNodeEvent
@@ -294,7 +293,6 @@ func (l *ZkEventListener) ListenServiceEvent(zkPath string, listener remoting.Da
 	}
 
 	for _, c := range children {
-
 		// listen l service node
 		dubboPath = path.Join(zkPath, c)
 		content, _, err := l.client.Conn.Get(dubboPath)
@@ -305,12 +303,12 @@ func (l *ZkEventListener) ListenServiceEvent(zkPath string, listener remoting.Da
 			continue
 		}
 		logger.Infof("listen dubbo service key{%s}", dubboPath)
-		go func(zkPath string) {
-			if l.ListenServiceNodeEvent(dubboPath) {
-				listener.DataChange(remoting.Event{Path: dubboPath, Action: remoting.EventTypeDel})
+		go func(zkPath string, listener remoting.DataListener) {
+			if l.ListenServiceNodeEvent(zkPath) {
+				listener.DataChange(remoting.Event{Path: zkPath, Action: remoting.EventTypeDel})
 			}
 			logger.Warnf("listenSelf(zk path{%s}) goroutine exit now", zkPath)
-		}(dubboPath)
+		}(dubboPath, listener)
 	}
 
 	logger.Infof("listen dubbo path{%s}", zkPath)