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albumenj pushed a commit to branch master
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The following commit(s) were added to refs/heads/master by this push:
     new c9d20e0d3 :fire: remove unused samples metrics (#1037)
c9d20e0d3 is described below

commit c9d20e0d3deeb1f4771c6c2b93041045ab37566b
Author: xiaosheng <[email protected]>
AuthorDate: Thu Dec 21 10:21:41 2023 +0800

    :fire: remove unused samples metrics (#1037)
    
    * :fire: remove unused samples metrics
    
    * :fire: remove unused samples metrics
---
 4-governance/dubbo-samples-metrics/README.md       |  26 --
 4-governance/dubbo-samples-metrics/pom.xml         | 173 ------------
 .../dubbo/samples/metrics/EmbeddedZooKeeper.java   | 309 ---------------------
 .../dubbo/samples/metrics/MetricsConsumer.java     |  59 ----
 .../dubbo/samples/metrics/MetricsProvider.java     |  51 ----
 .../dubbo/samples/metrics/api/DemoService.java     |  51 ----
 .../samples/metrics/impl/DemoServiceImpl.java      |  88 ------
 .../apache/dubbo/samples/metrics/model/Result.java |  69 -----
 .../apache/dubbo/samples/metrics/model/User.java   |  66 -----
 .../src/main/resources/log4j2.xml                  |  29 --
 .../main/resources/spring/dubbo-demo-consumer.xml  |  32 ---
 .../main/resources/spring/dubbo-demo-provider.xml  |  38 ---
 .../dubbo/samples/metrics/MetricsServiceIT.java    |  63 -----
 4-governance/pom.xml                               |   1 -
 14 files changed, 1055 deletions(-)

diff --git a/4-governance/dubbo-samples-metrics/README.md 
b/4-governance/dubbo-samples-metrics/README.md
deleted file mode 100644
index 433a7fd68..000000000
--- a/4-governance/dubbo-samples-metrics/README.md
+++ /dev/null
@@ -1,26 +0,0 @@
-# 使用Metrics模块进行数据采集
-Dubbo使用开源的[Dubbo 
Metrics](https://github.com/alibaba/metrics)进行数据埋点,并且通过服务暴露,使用的时候,首先需要进行配置:  
-
-* 依赖(其中dubbo版本在2.7.2及以后)
-```xml
-<dependency>
-    <groupId>org.apache.dubbo</groupId>
-    <artifactId>dubbo-monitor-default</artifactId>
-    <version>${dubbo.version}</version> 
-</dependency>
-```
-* 服务端
-```xml
-<dubbo:metrics port="20880" protocol="dubbo"/>
-<dubbo:provider filter="metrics" />
-```
-
-* 客户端
-```xml
-<dubbo:metrics port="20880" protocol="dubbo"/>
-<dubbo:consumer filter="metrics" />
-```
-其中,`<dubbo:metrics />`的配置指定了metrics暴露的协议和端口,这些信息会被放在元数据里面,而`<dubbo:provider 
/>`和`<dubbo: consuer 
/>`则在服务端和客户端分别激活了metrics的filter,如果你的服务分别含有服务端和客户端,选择在一端激活就可以。
-
-* dubbo admin  
-完成这些配置后,获取[dubbo 
admin](https://github.com/apache/dubbo-admin)在`develop`分支的最新代码,启动后,在左侧Metrics(统计)标签输入目标机器的IP,可以看到调用,线程池等Metrics信息
diff --git a/4-governance/dubbo-samples-metrics/pom.xml 
b/4-governance/dubbo-samples-metrics/pom.xml
deleted file mode 100644
index 06277e60f..000000000
--- a/4-governance/dubbo-samples-metrics/pom.xml
+++ /dev/null
@@ -1,173 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!--
-  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.
-  -->
-<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";>
-    <parent>
-        <groupId>org.apache</groupId>
-        <artifactId>apache</artifactId>
-        <version>23</version>
-        <relativePath/>
-    </parent>
-    <modelVersion>4.0.0</modelVersion>
-
-    <groupId>org.apache.dubbo</groupId>
-    <artifactId>dubbo-samples-metrics</artifactId>
-    <version>1.0-SNAPSHOT</version>
-
-    <name>Dubbo Samples Metrics</name>
-    <description>Dubbo Samples Metrics</description>
-
-    <properties>
-        <maven.compiler.source>1.8</maven.compiler.source>
-        <maven.compiler.target>1.8</maven.compiler.target>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-
-        <dubbo.version>3.2.6</dubbo.version>
-        <spring.version>4.3.30.RELEASE</spring.version>
-        <log4j2.version>2.20.0</log4j2.version>
-        <junit.version>4.13.1</junit.version>
-
-        <maven-compiler-plugin.version>3.7.0</maven-compiler-plugin.version>
-    </properties>
-
-    <dependencyManagement>
-        <dependencies>
-            <dependency>
-                <groupId>org.springframework</groupId>
-                <artifactId>spring-framework-bom</artifactId>
-                <version>${spring.version}</version>
-                <type>pom</type>
-                <scope>import</scope>
-            </dependency>
-            <dependency>
-                <groupId>org.apache.dubbo</groupId>
-                <artifactId>dubbo-bom</artifactId>
-                <version>${dubbo.version}</version>
-                <type>pom</type>
-                <scope>import</scope>
-            </dependency>
-            <dependency>
-                <groupId>org.apache.dubbo</groupId>
-                <artifactId>dubbo-dependencies-zookeeper-curator5</artifactId>
-                <version>${dubbo.version}</version>
-                <type>pom</type>
-                <exclusions>
-                    <exclusion>
-                        <artifactId>logback-classic</artifactId>
-                        <groupId>ch.qos.logback</groupId>
-                    </exclusion>
-                    <exclusion>
-                        <artifactId>logback-core</artifactId>
-                        <groupId>ch.qos.logback</groupId>
-                    </exclusion>
-                    <exclusion>
-                        <artifactId>log4j</artifactId>
-                        <groupId>log4j</groupId>
-                    </exclusion>
-                    <exclusion>
-                        <artifactId>slf4j-log4j12</artifactId>
-                        <groupId>org.slf4j</groupId>
-                    </exclusion>
-                </exclusions>
-            </dependency>
-        </dependencies>
-    </dependencyManagement>
-
-    <dependencies>
-        <dependency>
-            <groupId>org.apache.dubbo</groupId>
-            <artifactId>dubbo</artifactId>
-        </dependency>
-
-        <dependency>
-            <groupId>org.apache.dubbo</groupId>
-            <artifactId>dubbo-metrics-default</artifactId>
-        </dependency>
-
-        <dependency>
-            <groupId>org.apache.dubbo</groupId>
-            <artifactId>dubbo-dependencies-zookeeper-curator5</artifactId>
-            <type>pom</type>
-        </dependency>
-
-        <dependency>
-            <groupId>org.apache.logging.log4j</groupId>
-            <artifactId>log4j-slf4j-impl</artifactId>
-            <version>${log4j2.version}</version>
-        </dependency>
-
-        <dependency>
-            <groupId>junit</groupId>
-            <artifactId>junit</artifactId>
-            <version>${junit.version}</version>
-            <scope>test</scope>
-        </dependency>
-
-        <dependency>
-            <groupId>org.springframework</groupId>
-            <artifactId>spring-test</artifactId>
-            <scope>test</scope>
-        </dependency>
-
-        <dependency>
-            <groupId>com.alibaba</groupId>
-            <artifactId>fastjson</artifactId>
-            <version>1.2.83</version>
-        </dependency>
-
-        <!-- Embedded Zookeeper Server Dependencies -->
-        <dependency>
-            <groupId>io.dropwizard.metrics</groupId>
-            <artifactId>metrics-core</artifactId>
-            <version>4.1.12.1</version>
-        </dependency>
-        <dependency>
-            <groupId>org.xerial.snappy</groupId>
-            <artifactId>snappy-java</artifactId>
-            <version>1.1.10.5</version>
-        </dependency>
-    </dependencies>
-
-    <profiles>
-        <!-- For jdk 11 above JavaEE annotation -->
-        <profile>
-            <id>javax.annotation</id>
-            <activation>
-                <jdk>[1.11,)</jdk>
-            </activation>
-            <dependencies>
-                <dependency>
-                    <groupId>javax.annotation</groupId>
-                    <artifactId>javax.annotation-api</artifactId>
-                    <version>1.3.2</version>
-                </dependency>
-            </dependencies>
-        </profile>
-    </profiles>
-
-    <build>
-        <plugins>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-compiler-plugin</artifactId>
-                <version>${maven-compiler-plugin.version}</version>
-            </plugin>
-        </plugins>
-    </build>
-</project>
diff --git 
a/4-governance/dubbo-samples-metrics/src/main/java/org/apache/dubbo/samples/metrics/EmbeddedZooKeeper.java
 
b/4-governance/dubbo-samples-metrics/src/main/java/org/apache/dubbo/samples/metrics/EmbeddedZooKeeper.java
deleted file mode 100644
index c6b3fd4ad..000000000
--- 
a/4-governance/dubbo-samples-metrics/src/main/java/org/apache/dubbo/samples/metrics/EmbeddedZooKeeper.java
+++ /dev/null
@@ -1,309 +0,0 @@
-
-/*
- * Copyright 2014 the original author or authors.
- *
- * 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.
- */
-
-package org.apache.dubbo.samples.metrics;
-
-import org.apache.zookeeper.server.ServerConfig;
-import org.apache.zookeeper.server.ZooKeeperServerMain;
-import org.apache.zookeeper.server.quorum.QuorumPeerConfig;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.springframework.context.SmartLifecycle;
-import org.springframework.util.ErrorHandler;
-
-import java.io.File;
-import java.io.IOException;
-import java.lang.reflect.Method;
-import java.net.ServerSocket;
-import java.util.List;
-import java.util.Properties;
-import java.util.Random;
-import java.util.UUID;
-import java.util.stream.Collectors;
-
-/**
- * from: 
https://github.com/spring-projects/spring-xd/blob/v1.3.1.RELEASE/spring-xd-dirt/src/main/java/org/springframework/xd/dirt/zookeeper/ZooKeeperUtils.java
- * <p>
- * Helper class to start an embedded instance of standalone (non clustered) 
ZooKeeper.
- * <p>
- * NOTE: at least an external standalone server (if not an ensemble) are 
recommended, even for
- * {@link org.springframework.xd.dirt.server.singlenode.SingleNodeApplication}
- *
- * @author Patrick Peralta
- * @author Mark Fisher
- * @author David Turanski
- */
-public class EmbeddedZooKeeper implements SmartLifecycle {
-
-    private static final Random RANDOM = new Random();
-
-    /**
-     * Logger.
-     */
-    private static final Logger logger = 
LoggerFactory.getLogger(EmbeddedZooKeeper.class);
-
-    /**
-     * ZooKeeper client port. This will be determined dynamically upon startup.
-     */
-    private final int clientPort;
-
-    /**
-     * Whether to auto-start. Default is true.
-     */
-    private boolean autoStartup = true;
-
-    /**
-     * Lifecycle phase. Default is 0.
-     */
-    private int phase = 0;
-
-    /**
-     * Thread for running the ZooKeeper server.
-     */
-    private volatile Thread zkServerThread;
-
-    /**
-     * ZooKeeper server.
-     */
-    private volatile ZooKeeperServerMain zkServer;
-
-    /**
-     * {@link ErrorHandler} to be invoked if an Exception is thrown from the 
ZooKeeper server thread.
-     */
-    private ErrorHandler errorHandler;
-
-    private boolean daemon = true;
-
-    /**
-     * Construct an EmbeddedZooKeeper with a random port.
-     */
-    public EmbeddedZooKeeper() {
-        clientPort = findRandomPort(30000, 65535);
-    }
-
-    /**
-     * Construct an EmbeddedZooKeeper with the provided port.
-     *
-     * @param clientPort port for ZooKeeper server to bind to
-     */
-    public EmbeddedZooKeeper(int clientPort, boolean daemon) {
-        this.clientPort = clientPort;
-        this.daemon = daemon;
-    }
-
-    /**
-     * Returns the port that clients should use to connect to this embedded 
server.
-     *
-     * @return dynamically determined client port
-     */
-    public int getClientPort() {
-        return this.clientPort;
-    }
-
-    /**
-     * Specify whether to start automatically. Default is true.
-     *
-     * @param autoStartup whether to start automatically
-     */
-    public void setAutoStartup(boolean autoStartup) {
-        this.autoStartup = autoStartup;
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    @Override
-    public boolean isAutoStartup() {
-        return this.autoStartup;
-    }
-
-    /**
-     * Specify the lifecycle phase for the embedded server.
-     *
-     * @param phase the lifecycle phase
-     */
-    public void setPhase(int phase) {
-        this.phase = phase;
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    @Override
-    public int getPhase() {
-        return this.phase;
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    @Override
-    public boolean isRunning() {
-        return (zkServerThread != null);
-    }
-
-    /**
-     * Start the ZooKeeper server in a background thread.
-     * <p>
-     * Register an error handler via {@link #setErrorHandler} in order to 
handle
-     * any exceptions thrown during startup or execution.
-     */
-    @Override
-    public synchronized void start() {
-        if (zkServerThread == null) {
-            zkServerThread = new Thread(new ServerRunnable(), "ZooKeeper 
Server Starter");
-            zkServerThread.setDaemon(daemon);
-            zkServerThread.start();
-        }
-    }
-
-    /**
-     * Shutdown the ZooKeeper server.
-     */
-    @Override
-    public synchronized void stop() {
-        if (zkServerThread != null) {
-            // The shutdown method is protected...thus this hack to invoke it.
-            // This will log an exception on shutdown; see
-            // https://issues.apache.org/jira/browse/ZOOKEEPER-1873 for 
details.
-            try {
-                Method shutdown = 
ZooKeeperServerMain.class.getDeclaredMethod("shutdown");
-                shutdown.setAccessible(true);
-                shutdown.invoke(zkServer);
-            } catch (Exception e) {
-                throw new RuntimeException(e);
-            }
-
-            // It is expected that the thread will exit after
-            // the server is shutdown; this will block until
-            // the shutdown is complete.
-            try {
-                zkServerThread.join(5000);
-                zkServerThread = null;
-            } catch (InterruptedException e) {
-                Thread.currentThread().interrupt();
-                logger.warn("Interrupted while waiting for embedded ZooKeeper 
to exit");
-                // abandoning zk thread
-                zkServerThread = null;
-            }
-        }
-    }
-
-    /**
-     * Stop the server if running and invoke the callback when complete.
-     */
-    @Override
-    public void stop(Runnable callback) {
-        stop();
-        callback.run();
-    }
-
-    /**
-     * Provide an {@link ErrorHandler} to be invoked if an Exception is thrown 
from the ZooKeeper server thread. If none
-     * is provided, only error-level logging will occur.
-     *
-     * @param errorHandler the {@link ErrorHandler} to be invoked
-     */
-    public void setErrorHandler(ErrorHandler errorHandler) {
-        this.errorHandler = errorHandler;
-    }
-
-    /**
-     * Runnable implementation that starts the ZooKeeper server.
-     */
-    private class ServerRunnable implements Runnable {
-
-        @Override
-        public void run() {
-            try {
-                Properties properties = new Properties();
-                File file = new File(System.getProperty("java.io.tmpdir")
-                        + File.separator + UUID.randomUUID());
-                file.deleteOnExit();
-                properties.setProperty("dataDir", file.getAbsolutePath());
-                properties.setProperty("clientPort", 
String.valueOf(clientPort));
-
-                QuorumPeerConfig quorumPeerConfig = new QuorumPeerConfig();
-                quorumPeerConfig.parseProperties(properties);
-
-                zkServer = new ZooKeeperServerMain();
-                ServerConfig configuration = new ServerConfig();
-                configuration.readFrom(quorumPeerConfig);
-                
-                System.setProperty("zookeeper.admin.enableServer", "false");
-
-                zkServer.runFromConfig(configuration);
-            } catch (Exception e) {
-                if (errorHandler != null) {
-                    errorHandler.handleError(e);
-                } else {
-                    logger.error("Exception running embedded ZooKeeper", e);
-                }
-            }
-        }
-    }
-
-    /**
-     * Workaround for SocketUtils.findRandomPort() deprecation.
-     *
-     * @param min min port
-     * @param max max port
-     * @return a random generated available port
-     */
-    private static int findRandomPort(int min, int max) {
-        if (min < 1024) {
-            throw new IllegalArgumentException("Max port shouldn't be less 
than 1024.");
-        }
-
-        if (max > 65535) {
-            throw new IllegalArgumentException("Max port shouldn't be greater 
than 65535.");
-        }
-
-        if (min > max) {
-            throw new IllegalArgumentException("Min port shouldn't be greater 
than max port.");
-        }
-
-        int port = 0;
-        int counter = 0;
-
-        // Workaround for legacy JDK doesn't support Random.nextInt(min, max).
-        List<Integer> randomInts = RANDOM.ints(min, max + 1)
-                .limit(max - min)
-                .mapToObj(Integer::valueOf)
-                .collect(Collectors.toList());
-
-        do {
-            if (counter > max - min) {
-                throw new IllegalStateException("Unable to find a port between 
" + min + "-" + max);
-            }
-
-            port = randomInts.get(counter);
-            counter++;
-        } while (isPortInUse(port));
-
-        return port;
-    }
-
-    private static boolean isPortInUse(int port) {
-        try (ServerSocket ignored = new ServerSocket(port)) {
-            return false;
-        } catch (IOException e) {
-            // continue
-        }
-        return true;
-    }
-}
diff --git 
a/4-governance/dubbo-samples-metrics/src/main/java/org/apache/dubbo/samples/metrics/MetricsConsumer.java
 
b/4-governance/dubbo-samples-metrics/src/main/java/org/apache/dubbo/samples/metrics/MetricsConsumer.java
deleted file mode 100644
index 54d2caceb..000000000
--- 
a/4-governance/dubbo-samples-metrics/src/main/java/org/apache/dubbo/samples/metrics/MetricsConsumer.java
+++ /dev/null
@@ -1,59 +0,0 @@
-/*
- * 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.
- */
-
-/*
- * Copyright 2014 the original author or authors.
- *
- * 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.
- */
-
-package org.apache.dubbo.samples.metrics;
-
-import org.apache.dubbo.samples.metrics.api.DemoService;
-import org.apache.dubbo.samples.metrics.model.Result;
-
-import org.springframework.context.support.ClassPathXmlApplicationContext;
-
-public class MetricsConsumer {
-
-    public static void main(String[] args) {
-        ClassPathXmlApplicationContext context = new 
ClassPathXmlApplicationContext("spring/dubbo-demo-consumer.xml");
-        context.start();
-
-        DemoService demoService = context.getBean("demoService", 
DemoService.class);
-
-        while (true) {
-            try {
-                Thread.sleep(3000);
-                Result hello = demoService.sayHello("world");
-                System.out.println(hello.getMsg());
-            } catch (InterruptedException e) {
-                e.printStackTrace();
-            }
-        }
-    }
-}
diff --git 
a/4-governance/dubbo-samples-metrics/src/main/java/org/apache/dubbo/samples/metrics/MetricsProvider.java
 
b/4-governance/dubbo-samples-metrics/src/main/java/org/apache/dubbo/samples/metrics/MetricsProvider.java
deleted file mode 100644
index 350c5fa55..000000000
--- 
a/4-governance/dubbo-samples-metrics/src/main/java/org/apache/dubbo/samples/metrics/MetricsProvider.java
+++ /dev/null
@@ -1,51 +0,0 @@
-/*
- * 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.
- */
-
-/*
- * Copyright 2014 the original author or authors.
- *
- * 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.
- */
-
-package org.apache.dubbo.samples.metrics;
-
-import org.springframework.context.support.ClassPathXmlApplicationContext;
-
-import java.util.concurrent.CountDownLatch;
-
-public class MetricsProvider {
-
-    public static void main(String[] args) throws Exception {
-        new EmbeddedZooKeeper(2181, false).start();
-
-        ClassPathXmlApplicationContext context = new 
ClassPathXmlApplicationContext("spring/dubbo-demo-provider.xml");
-        context.start();
-
-        System.out.println("dubbo service started");
-        new CountDownLatch(1).await();
-    }
-}
diff --git 
a/4-governance/dubbo-samples-metrics/src/main/java/org/apache/dubbo/samples/metrics/api/DemoService.java
 
b/4-governance/dubbo-samples-metrics/src/main/java/org/apache/dubbo/samples/metrics/api/DemoService.java
deleted file mode 100644
index 3394fe55b..000000000
--- 
a/4-governance/dubbo-samples-metrics/src/main/java/org/apache/dubbo/samples/metrics/api/DemoService.java
+++ /dev/null
@@ -1,51 +0,0 @@
-/*
- * 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.
- */
-
-/*
- * Copyright 2014 the original author or authors.
- *
- * 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.
- */
-
-package org.apache.dubbo.samples.metrics.api;
-
-import org.apache.dubbo.samples.metrics.model.Result;
-import org.apache.dubbo.samples.metrics.model.User;
-
-import java.util.concurrent.CompletableFuture;
-
-public interface DemoService {
-    CompletableFuture<Integer> sayHello();
-
-    Result sayHello(String name);
-
-    Result sayHello(Long id, String name);
-
-    Result sayHello(User user);
-
-    String stringArray(String[] bytes);
-}
diff --git 
a/4-governance/dubbo-samples-metrics/src/main/java/org/apache/dubbo/samples/metrics/impl/DemoServiceImpl.java
 
b/4-governance/dubbo-samples-metrics/src/main/java/org/apache/dubbo/samples/metrics/impl/DemoServiceImpl.java
deleted file mode 100644
index 23d0b1c11..000000000
--- 
a/4-governance/dubbo-samples-metrics/src/main/java/org/apache/dubbo/samples/metrics/impl/DemoServiceImpl.java
+++ /dev/null
@@ -1,88 +0,0 @@
-/*
- * 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.
- */
-
-/*
- * Copyright 2014 the original author or authors.
- *
- * 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.
- */
-
-package org.apache.dubbo.samples.metrics.impl;
-
-import org.apache.dubbo.common.logger.Logger;
-import org.apache.dubbo.common.logger.LoggerFactory;
-import org.apache.dubbo.samples.metrics.api.DemoService;
-import org.apache.dubbo.samples.metrics.model.Result;
-import org.apache.dubbo.samples.metrics.model.User;
-
-import org.apache.dubbo.rpc.RpcContext;
-
-import java.text.SimpleDateFormat;
-import java.util.Date;
-import java.util.concurrent.CompletableFuture;
-
-public class DemoServiceImpl implements DemoService {
-
-    public static final Logger logger = 
LoggerFactory.getLogger(DemoServiceImpl.class);
-
-    private String name = "Han MeiMei";
-
-    @Override
-    public CompletableFuture<Integer> sayHello() {
-        return CompletableFuture.completedFuture(2122);
-    }
-
-
-
-    @Override
-    public Result sayHello(String localName) {
-        logger.info("[" + new SimpleDateFormat("HH:mm:ss").format(new Date()) 
+ "] Hello " + name + ", request from consumer: " + RpcContext
-                .getContext().getRemoteAddress());
-        return new Result(name, "Hello " + localName + ", response from 
provider: " + RpcContext.getContext().getLocalAddress());
-    }
-
-    @Override
-    public Result sayHello(final Long id, final String name) {
-        return sayHello(new User(id, name));
-    }
-
-    @Override
-    public Result sayHello(final User user) {
-        String localName = user.getUsername();
-        Long id = user.getId();
-        logger.info("[" + new SimpleDateFormat("HH:mm:ss").format(new Date()) 
+ "] Hello " + name + ", request from consumer: " + RpcContext
-                .getContext().getRemoteAddress());
-        return new Result(name, "Hello " + id + " " + localName +
-//                " " + "bytes: " + user.getBytes().toString() +
-                ", response from provider: " + 
RpcContext.getContext().getLocalAddress());
-    }
-
-    @Override
-    public String stringArray(String[] bytes) {
-        return bytes.toString();
-    }
-}
diff --git 
a/4-governance/dubbo-samples-metrics/src/main/java/org/apache/dubbo/samples/metrics/model/Result.java
 
b/4-governance/dubbo-samples-metrics/src/main/java/org/apache/dubbo/samples/metrics/model/Result.java
deleted file mode 100644
index 0805ed1f8..000000000
--- 
a/4-governance/dubbo-samples-metrics/src/main/java/org/apache/dubbo/samples/metrics/model/Result.java
+++ /dev/null
@@ -1,69 +0,0 @@
-/*
- * 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.
- */
-
-/*
- * Copyright 2014 the original author or authors.
- *
- * 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.
- */
-
-package org.apache.dubbo.samples.metrics.model;
-
-import java.io.Serializable;
-
-/**
- * @author zmx ON 2019-07-03
- */
-public class Result implements Serializable {
-    public Result(){
-
-    }
-
-    public Result(String userName, String msg){
-        this.msg = msg;
-        this.userName = userName;
-    }
-
-    private String userName;
-    private String msg;
-
-    public String getUserName() {
-        return userName;
-    }
-
-    public void setUserName(String userName) {
-        this.userName = userName;
-    }
-
-    public String getMsg() {
-        return msg;
-    }
-
-    public void setMsg(String msg) {
-        this.msg = msg;
-    }
-}
diff --git 
a/4-governance/dubbo-samples-metrics/src/main/java/org/apache/dubbo/samples/metrics/model/User.java
 
b/4-governance/dubbo-samples-metrics/src/main/java/org/apache/dubbo/samples/metrics/model/User.java
deleted file mode 100644
index e7d044403..000000000
--- 
a/4-governance/dubbo-samples-metrics/src/main/java/org/apache/dubbo/samples/metrics/model/User.java
+++ /dev/null
@@ -1,66 +0,0 @@
-/*
- * 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.
- */
-
-/*
- * Copyright 2014 the original author or authors.
- *
- * 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.
- */
-
-package org.apache.dubbo.samples.metrics.model;
-
-import java.io.Serializable;
-
-public class User implements Serializable {
-    private Long id;
-    private String username;
-
-    public User() {
-    }
-
-    public User(final Long id, final String username) {
-        this.id = id;
-        this.username = username;
-    }
-
-    public Long getId() {
-        return id;
-    }
-
-    public void setId(final Long id) {
-        this.id = id;
-    }
-
-    public String getUsername() {
-        return username;
-    }
-
-    public void setUsername(final String username) {
-        this.username = username;
-    }
-
-}
diff --git a/4-governance/dubbo-samples-metrics/src/main/resources/log4j2.xml 
b/4-governance/dubbo-samples-metrics/src/main/resources/log4j2.xml
deleted file mode 100644
index 69e1321d2..000000000
--- a/4-governance/dubbo-samples-metrics/src/main/resources/log4j2.xml
+++ /dev/null
@@ -1,29 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!--
-  ~ 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.
-  -->
-<Configuration status="WARN">
-    <Appenders>
-        <Console name="Console" target="SYSTEM_OUT" follow="true">
-            <PatternLayout pattern="%style{%d{HH:mm:ss.SSS}}{Magenta} 
%style{|-}{White}%highlight{%-5p} [%t] %style{%40.40c}{Cyan}:%style{%-3L}{Blue} 
%style{-|}{White} 
%m%n%rEx{filters(jdk.internal.reflect,java.lang.reflect,sun.reflect)}" 
disableAnsi="false" charset="UTF-8"/>
-        </Console>
-    </Appenders>
-    <Loggers>
-        <Root level="info">
-            <AppenderRef ref="Console"/>
-        </Root>
-    </Loggers>
-</Configuration>
diff --git 
a/4-governance/dubbo-samples-metrics/src/main/resources/spring/dubbo-demo-consumer.xml
 
b/4-governance/dubbo-samples-metrics/src/main/resources/spring/dubbo-demo-consumer.xml
deleted file mode 100644
index ada8fe530..000000000
--- 
a/4-governance/dubbo-samples-metrics/src/main/resources/spring/dubbo-demo-consumer.xml
+++ /dev/null
@@ -1,32 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!--
-  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.
-  -->
-
-<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
-       xmlns:dubbo="http://dubbo.apache.org/schema/dubbo";
-       xmlns="http://www.springframework.org/schema/beans"; 
xmlns:context="http://www.springframework.org/schema/context";
-       xsi:schemaLocation="http://www.springframework.org/schema/beans 
http://www.springframework.org/schema/beans/spring-beans.xsd
-       http://dubbo.apache.org/schema/dubbo 
http://dubbo.apache.org/schema/dubbo/dubbo.xsd 
http://www.springframework.org/schema/context 
http://www.springframework.org/schema/context/spring-context.xsd";>
-    <context:property-placeholder/>
-
-    <dubbo:application name="metrics-demo-consumer"/>
-
-    <dubbo:registry address="zookeeper://${zookeeper.address:127.0.0.1}:2181"/>
-
-    <dubbo:reference id="demoService" check="true" 
interface="org.apache.dubbo.samples.metrics.api.DemoService"/>
-
-</beans>
diff --git 
a/4-governance/dubbo-samples-metrics/src/main/resources/spring/dubbo-demo-provider.xml
 
b/4-governance/dubbo-samples-metrics/src/main/resources/spring/dubbo-demo-provider.xml
deleted file mode 100644
index 501f3af67..000000000
--- 
a/4-governance/dubbo-samples-metrics/src/main/resources/spring/dubbo-demo-provider.xml
+++ /dev/null
@@ -1,38 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!--
-  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.
-  -->
-
-<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
-       xmlns:dubbo="http://dubbo.apache.org/schema/dubbo";
-       xmlns="http://www.springframework.org/schema/beans"; 
xmlns:context="http://www.springframework.org/schema/context";
-       xsi:schemaLocation="http://www.springframework.org/schema/beans 
http://www.springframework.org/schema/beans/spring-beans.xsd
-       http://dubbo.apache.org/schema/dubbo 
http://dubbo.apache.org/schema/dubbo/dubbo.xsd 
http://www.springframework.org/schema/context 
http://www.springframework.org/schema/context/spring-context.xsd";>
-    <context:property-placeholder/>
-
-    <dubbo:application name="metrics-provider"/>
-
-    <dubbo:registry address="zookeeper://${zookeeper.address:127.0.0.1}:2181"/>
-    <dubbo:config-center 
address="zookeeper://${zookeepr.address:127.0.0.1}:2181" />
-    <dubbo:metadata-report 
address="zookeeper://${zookeeper.address:127.0.0.1}:2181" />
-
-    <dubbo:metrics port="20880" protocol="dubbo"/>
-    <dubbo:provider filter="metrics" />
-
-    <bean id="demoService" 
class="org.apache.dubbo.samples.metrics.impl.DemoServiceImpl"/>
-
-    <dubbo:service 
interface="org.apache.dubbo.samples.metrics.api.DemoService" ref="demoService"/>
-</beans>
diff --git 
a/4-governance/dubbo-samples-metrics/src/test/java/org/apache/dubbo/samples/metrics/MetricsServiceIT.java
 
b/4-governance/dubbo-samples-metrics/src/test/java/org/apache/dubbo/samples/metrics/MetricsServiceIT.java
deleted file mode 100644
index 71fb2f8de..000000000
--- 
a/4-governance/dubbo-samples-metrics/src/test/java/org/apache/dubbo/samples/metrics/MetricsServiceIT.java
+++ /dev/null
@@ -1,63 +0,0 @@
-/*
- * 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 org.apache.dubbo.samples.metrics;
-
-import org.apache.dubbo.config.ApplicationConfig;
-import org.apache.dubbo.config.ReferenceConfig;
-import org.apache.dubbo.monitor.MetricsService;
-import org.apache.dubbo.samples.metrics.api.DemoService;
-
-import com.alibaba.fastjson.JSON;
-import com.alibaba.fastjson.JSONArray;
-import com.alibaba.fastjson.JSONObject;
-import org.junit.Assert;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.test.context.ContextConfiguration;
-import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
-
-@RunWith(SpringJUnit4ClassRunner.class)
-@ContextConfiguration(locations = 
{"classpath:/spring/dubbo-demo-consumer.xml"})
-public class MetricsServiceIT {
-    private static String providerHost = System.getProperty("dubbo.address", 
"127.0.0.1");
-    private static int providerPort = Integer.getInteger("dubbo.port", 20880);
-
-    @Autowired
-    private DemoService demoService;
-
-    @Test
-    public void test() throws Exception {
-        for (int i = 0; i < 10; i++) {
-            System.out.println("result: " + demoService.sayHello("dubbo"));
-        }
-
-        ReferenceConfig<MetricsService> reference = new ReferenceConfig<>();
-        reference.setApplication(new 
ApplicationConfig("metrics-demo-consumer"));
-        reference.setUrl("dubbo://" + providerHost + ":" + providerPort + "/" 
+ MetricsService.class.getName());
-        reference.setInterface(MetricsService.class);
-        MetricsService service = reference.get();
-        String result = service.getMetricsByGroup("dubbo");
-        JSONArray metrics = (JSONArray) JSON.parse(result);
-        Assert.assertFalse(metrics.isEmpty());
-        for (int i = 0; i < metrics.size(); i++) {
-            String metric = (String) ((JSONObject) 
metrics.get(1)).get("metric");
-            Assert.assertTrue(metric.startsWith("dubbo.provider") || 
metric.startsWith("threadPool"));
-        }
-    }
-}
diff --git a/4-governance/pom.xml b/4-governance/pom.xml
index 2934f0056..4b8192baf 100644
--- a/4-governance/pom.xml
+++ b/4-governance/pom.xml
@@ -30,7 +30,6 @@
         <module>dubbo-samples-applevel-override</module>
         <module>dubbo-samples-configconditionrouter</module>
         <module>dubbo-samples-meshrule-router</module>
-        <module>dubbo-samples-metrics</module>
         <module>dubbo-samples-metrics-prometheus</module>
         <module>dubbo-samples-metrics-spring-boot</module>
         <module>dubbo-samples-sentinel</module>


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