Add service and instance reset function (#1790)

* Manually trigger agent registration and write registration status to file

* Delete unused variables

* Code optimization, encapsulating some methods

* add clear DataCarrier function

* revert SkyWalkingAgent

* Optimize code and logic, including updating applicatin_id in unRegisterOperationNames

* Server end metadata loss notification

* Server end metadata loss notification

* fix file stream close and other problem

* revert to old

* fix some bug
Signed-off-by: NLiu-XinYuan <879928098@qq.com>

* fix some bugs in agent reset

* add close inputStream and fileChannel and fix some bug

* fixed some bugs

apm-commons/apm-datacarrier/src/main/java/org/apache/skywalking/apm/commons/datacarrier/DataCarrier.java

@@ -152,4 +152,10 @@ public class DataCarrier<T> {
             consumerPool.close();
         }
     }
+
+    public void clear() {
+        for (int i = 0; i < channels.getChannelSize(); i++) {
+            channels.getBuffer(i).clear();
+        }
+    }
 }

apm-commons/apm-datacarrier/src/main/java/org/apache/skywalking/apm/commons/datacarrier/buffer/Buffer.java

@@ -91,4 +91,10 @@ public class Buffer<T> {
         return result;
     }
 
+    public void clear() {
+        for (Object obj : buffer) {
+            obj = null;
+        }
+    }
+
 }

apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/conf/Config.java

@@ -16,7 +16,6 @@
  *
  */
 
-
 package org.apache.skywalking.apm.agent.core.conf;
 
 import org.apache.skywalking.apm.agent.core.context.trace.TraceSegment;
@@ -70,6 +69,21 @@ public class Config {
          * Skywalking team may ask for these files in order to resolve compatible problem.
          */
         public static boolean IS_OPEN_DEBUGGING_CLASS = false;
+
+        /**
+         * Specify register.status dir ,This is an option, the default is AGENT_HOME/option/reset.status.
+         */
+        public static String REGISTER_STATUS_DIR = "skywalking-agent/option";
+
+        /**
+         * Specify instance_uuid to ensure that the whole show is unique, for example: applicationName_ip_12
+         */
+        public static String INSTANCE_UUID = "";
+        /**
+         * enabled means that the reset function is enabled, and disabled means that the reset function is not enabled. A reset can be triggered by modifying the configuration file only if the reset feature is enabled.
+         */
+        public static String RESETER_LISTENER = "disabled";
+
     }
 
     public static class Collector {
@@ -80,7 +94,7 @@ public class Config {
         /**
          * application and service registry check interval
          */
-        public static long APP_AND_SERVICE_REGISTER_CHECK_INTERVAL = 3;
+        public static long SERVICE_AND_ENDPOINT_REGISTER_CHECK_INTERVAL = 3;
         /**
          * Collector skywalking trace receiver service addresses.
          */

apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/conf/SnifferConfigInitializer.java

@@ -41,24 +41,23 @@ import org.apache.skywalking.apm.util.StringUtil;
  */
 public class SnifferConfigInitializer {
     private static final ILog logger = LogManager.getLogger(SnifferConfigInitializer.class);
-    private static String SPECIFIED_CONFIG_PATH = "skywalking_config";
-    private static String DEFAULT_CONFIG_FILE_NAME = "/config/agent.config";
-    private static String ENV_KEY_PREFIX = "skywalking.";
+    private static final String SPECIFIED_CONFIG_PATH = "skywalking_config";
+    private static final String DEFAULT_CONFIG_FILE_NAME = "/config/agent.config";
+    private static final String ENV_KEY_PREFIX = "skywalking.";
+    private static final String INSTANCE_UUID_NAME = "agent.instance_uuid";
+    private static final String REGISTER_STATUS_DIR = "agent.register_status_dir";
     private static boolean IS_INIT_COMPLETED = false;
 
     /**
-     * If the specified agent config path is set, the agent will try to locate the specified agent config.
-     * If the specified agent config path is not set , the agent will try to locate `agent.config`, which should be in the /config dictionary of agent package.
-     * <p>
-     * Also try to override the config by system.env and system.properties. All the keys in these two places should
-     * start with {@link #ENV_KEY_PREFIX}. e.g. in env `skywalking.agent.application_code=yourAppName` to override
-     * `agent.application_code` in config file.
-     * <p>
-     * At the end, `agent.application_code` and `collector.servers` must be not blank.
+     * If the specified agent config path is set, the agent will try to locate the specified agent config. If the
+     * specified agent config path is not set , the agent will try to locate `agent.config`, which should be in the
+     * /config dictionary of agent package. <p> Also try to override the config by system.env and system.properties. All
+     * the keys in these two places should start with {@link #ENV_KEY_PREFIX}. e.g. in env
+     * `skywalking.agent.application_code=yourAppName` to override `agent.application_code` in config file. <p> At the
+     * end, `agent.application_code` and `collector.servers` must be not blank.
      */
     public static void initialize() throws ConfigNotFoundException, AgentPackageNotFoundException {
         InputStreamReader configFileStream;
-
         try {
             configFileStream = loadConfig();
             Properties properties = new Properties();

apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/dictionary/NetworkAddressDictionary.java

@@ -16,7 +16,6 @@
  *
  */
 
-
 package org.apache.skywalking.apm.agent.core.dictionary;
 
 import io.netty.util.internal.ConcurrentSet;
@@ -49,6 +48,12 @@ public enum NetworkAddressDictionary {
         }
     }
 
+    public void clearApplicationDictionary() {
+        unRegisterApplications.clear();
+        applicationDictionary.clear();
+
+    }
+
     public void syncRemoteDictionary(
         NetworkAddressRegisterServiceGrpc.NetworkAddressRegisterServiceBlockingStub networkAddressRegisterServiceBlockingStub) {
         if (unRegisterApplications.size() > 0) {

apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/dictionary/OperationNameDictionary.java

@@ -61,6 +61,13 @@ public enum OperationNameDictionary {
         }
     }
 
+    public void clearOperationNameDictionary() {
+        unRegisterOperationNames.clear();
+        operationNameDictionary.clear();
+
+    }
+
+
     public void syncRemoteDictionary(
         ServiceNameDiscoveryServiceGrpc.ServiceNameDiscoveryServiceBlockingStub serviceNameDiscoveryServiceBlockingStub) {
         if (unRegisterOperationNames.size() > 0) {
@@ -106,6 +113,10 @@ public enum OperationNameDictionary {
             return applicationId;
         }
 
+        public void setApplicationId(int applicationId) {
+            this.applicationId = applicationId;
+        }
+
         public String getOperationName() {
             return operationName;
         }

apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/listener/ResetConfListener.java

+/*
+ * 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.skywalking.apm.agent.core.listener;
+
+import java.io.File;
+
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.util.concurrent.Executors;
+import java.util.concurrent.TimeUnit;
+import org.apache.skywalking.apm.agent.core.boot.BootService;
+import org.apache.skywalking.apm.agent.core.boot.DefaultImplementor;
+import org.apache.skywalking.apm.agent.core.boot.DefaultNamedThreadFactory;
+import org.apache.skywalking.apm.agent.core.conf.Config;
+import org.apache.skywalking.apm.agent.core.logging.api.ILog;
+import org.apache.skywalking.apm.agent.core.logging.api.LogManager;
+import org.apache.skywalking.apm.util.RunnableWithExceptionProtection;
+
+/**
+ * @author liu-xinyuan
+ **/
+@DefaultImplementor
+public class ResetConfListener implements BootService, Runnable {
+    private static final ILog logger = LogManager.getLogger(ResetConfListener.class);
+    private File configFile = null;
+
+    @Override public void prepare() throws Throwable {
+
+    }
+
+    @Override public void boot() {
+        if ("enabled".equals(Config.Agent.RESETER_LISTENER)) {
+            Executors.newSingleThreadScheduledExecutor(new DefaultNamedThreadFactory("ResetConfListener"))
+                .scheduleAtFixedRate(new RunnableWithExceptionProtection(this, new RunnableWithExceptionProtection.CallbackWhenException() {
+                    @Override
+                    public void handle(Throwable t) {
+                        logger.error("unexpected exception.", t);
+                    }
+                }), 0, Config.Collector.SERVICE_AND_ENDPOINT_REGISTER_CHECK_INTERVAL, TimeUnit.SECONDS);
+
+        } else {
+            logger.info("Since the agent.register_status variable is not set correctly, the reset service is not started -> Agent reset service is inactive.");
+        }
+    }
+    @Override public void onComplete() throws Throwable {
+
+    }
+
+    @Override public void shutdown() throws Throwable {
+
+    }
+
+    @Override public void run() {
+        logger.debug("ResetConfListener running.");
+
+        try {
+            if (Reseter.INSTANCE.predicateReset())
+                Reseter.INSTANCE.setStatus(ResetStatus.DONE).clearID().reportToRegisterFile();
+        } catch (SecurityException e) {
+            logger.warn(e, "Denise read access to the file {}", configFile);
+        } catch (FileNotFoundException e) {
+            logger.warn(e, "not found file {}", configFile);
+        } catch (IOException e) {
+            logger.warn(e.getMessage());
+        }
+
+    }
+
+}

apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/listener/ResetStatus.java

+/*
+ * 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.skywalking.apm.agent.core.listener;
+
+/**
+ * @author liu-xinyuan
+ **/
+public enum ResetStatus {
+    OFF("OFF"), ON("ON"), DONE("DONE");
+    private String label;
+
+    ResetStatus(String label) {
+        this.label = label;
+    }
+
+    public String value() {
+        return this.label;
+    }
+
+}
\ No newline at end of file

apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/listener/Reseter.java

+/*
+ * 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.skywalking.apm.agent.core.listener;
+
+import java.io.Closeable;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.nio.channels.FileChannel;
+import java.nio.channels.FileLock;
+import java.util.Properties;
+import org.apache.skywalking.apm.agent.core.boot.ServiceManager;
+import org.apache.skywalking.apm.agent.core.conf.Config;
+import org.apache.skywalking.apm.agent.core.conf.RemoteDownstreamConfig;
+import org.apache.skywalking.apm.agent.core.dictionary.DictionaryUtil;
+import org.apache.skywalking.apm.agent.core.dictionary.NetworkAddressDictionary;
+import org.apache.skywalking.apm.agent.core.dictionary.OperationNameDictionary;
+import org.apache.skywalking.apm.agent.core.logging.api.ILog;
+import org.apache.skywalking.apm.agent.core.logging.api.LogManager;
+import org.apache.skywalking.apm.agent.core.remote.TraceSegmentServiceClient;
+
+/**
+ * @author liu-xinyuan
+ **/
+public enum Reseter {
+    INSTANCE;
+    private static final ILog logger = LogManager.getLogger(Reseter.class);
+    private static final String APPLICATION_ID_NAM = "application_id";
+    private static final String INSTANCE_ID_NAME = "instance_id";
+    private static final String STATUS_NAME = "status";
+    private static final String RESET_CHILD_DIR = "/reset.status";
+    private static final String COMMENT = "#Status has three values: ON (trigger reset), DONE(reset complete), OFF(agent fist boot).\n" +
+        "Application_id: application_id of the current agent.\n" +
+        "Instance_id: the instanceid of the current agent.";
+    private volatile Properties properties = new Properties();
+    private String resetPath;
+    private ResetStatus status = ResetStatus.OFF;
+    private int isFirstRun = 0;
+    private int detectDuration = 5;
+
+    public Reseter setStatus(ResetStatus status) {
+        this.status = status;
+        return this;
+    }
+
+    public String getResetPath() throws IOException {
+        if (isFirstRun == 0) {
+            File statusDir = new File(Config.Agent.REGISTER_STATUS_DIR);
+
+            if (statusDir.exists() && statusDir.isDirectory()) {
+                resetPath = statusDir.getAbsolutePath() + RESET_CHILD_DIR;
+            } else {
+                statusDir.mkdir();
+            }
+            init();
+            isFirstRun = 1;
+        }
+        return resetPath;
+    }
+
+    public void reportToRegisterFile() throws IOException {
+        FileOutputStream outputStream = null;
+        try {
+            File configFile = new File(resetPath);
+            properties.setProperty(APPLICATION_ID_NAM, RemoteDownstreamConfig.Agent.APPLICATION_ID + "");
+            properties.setProperty(INSTANCE_ID_NAME, RemoteDownstreamConfig.Agent.APPLICATION_INSTANCE_ID + "");
+            properties.setProperty(STATUS_NAME, status.value());
+            outputStream = new FileOutputStream(configFile);
+            properties.store(outputStream, COMMENT);
+        } finally {
+            closeFileStream(outputStream);
+        }
+    }
+
+    public Reseter clearID() {
+        RemoteDownstreamConfig.Agent.APPLICATION_ID = DictionaryUtil.nullValue();
+        RemoteDownstreamConfig.Agent.APPLICATION_INSTANCE_ID = DictionaryUtil.nullValue();
+        OperationNameDictionary.INSTANCE.clearOperationNameDictionary();
+        NetworkAddressDictionary.INSTANCE.clearApplicationDictionary();
+        ServiceManager.INSTANCE.findService(TraceSegmentServiceClient.class).clearCache();
+        status = ResetStatus.DONE;
+        logger.info("clear id successfully,begin trigger reset.");
+        return this;
+    }
+
+    public Boolean predicateReset() throws IOException {
+        File resetFile = new File(getResetPath());
+        FileInputStream inputStream = null;
+        FileLock fileLock = null;
+        FileChannel fileChannel = null;
+        if (System.currentTimeMillis() - resetFile.lastModified() < detectDuration * 1000) {
+            try {
+                logger.info("The file reset.status was detected to have been modified in the last {} seconds.", detectDuration);
+                inputStream = new FileInputStream(resetFile);
+                fileChannel = inputStream.getChannel();
+                fileLock = fileChannel.tryLock(0, resetFile.length(), true);
+                if (fileLock == null) {
+                    return false;
+                }
+                properties.clear();
+                properties.load(inputStream);
+            } finally {
+                fileLock.release();
+                fileChannel.close();
+                closeFileStream(inputStream);
+            }
+            if (properties.get(STATUS_NAME) != null && properties.getProperty(STATUS_NAME).equals(ResetStatus.ON.value())) {
+                return true;
+            }
+        }
+        return false;
+
+    }
+
+    public void init() throws IOException {
+        FileOutputStream outputStream = null;
+        try {
+            properties.setProperty(APPLICATION_ID_NAM, RemoteDownstreamConfig.Agent.APPLICATION_ID + "");
+            properties.setProperty(INSTANCE_ID_NAME, RemoteDownstreamConfig.Agent.APPLICATION_INSTANCE_ID + "");
+            properties.setProperty(STATUS_NAME, status.value());
+            File file = new File(resetPath);
+            if (!file.getParentFile().exists()) {
+                file.getParentFile().mkdir();
+            }
+            outputStream = new FileOutputStream(file);
+            properties.store(outputStream, COMMENT);
+        } finally {
+            closeFileStream(outputStream);
+        }
+    }
+
+    public void closeFileStream(Closeable stream) throws IOException {
+        if (stream != null) {
+            try {
+                stream.close();
+            } catch (IOException e) {
+                throw new IOException("file close failed.", e);
+            }
+        } else {
+            throw new IOException("create file outputstream failed");
+        }
+    }
+}

apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/remote/AppAndServiceRegisterClient.java

@@ -31,16 +31,21 @@ import org.apache.skywalking.apm.agent.core.context.trace.TraceSegment;
 import org.apache.skywalking.apm.agent.core.dictionary.DictionaryUtil;
 import org.apache.skywalking.apm.agent.core.dictionary.NetworkAddressDictionary;
 import org.apache.skywalking.apm.agent.core.dictionary.OperationNameDictionary;
+import org.apache.skywalking.apm.agent.core.listener.ResetStatus;
+import org.apache.skywalking.apm.agent.core.listener.Reseter;
 import org.apache.skywalking.apm.agent.core.logging.api.ILog;
 import org.apache.skywalking.apm.agent.core.logging.api.LogManager;
 import org.apache.skywalking.apm.agent.core.os.OSUtil;
 import org.apache.skywalking.apm.network.language.agent.*;
+import org.apache.skywalking.apm.network.register.ServiceInstancePingGrpc;
+import org.apache.skywalking.apm.network.register.ServiceInstancePingPkg;
 import org.apache.skywalking.apm.util.RunnableWithExceptionProtection;
 
 import java.util.UUID;
 import java.util.concurrent.Executors;
 import java.util.concurrent.ScheduledFuture;
 import java.util.concurrent.TimeUnit;
+import org.apache.skywalking.apm.util.StringUtil;
 
 /**
  * @author wusheng
@@ -48,13 +53,13 @@ import java.util.concurrent.TimeUnit;
 @DefaultImplementor
 public class AppAndServiceRegisterClient implements BootService, GRPCChannelListener, Runnable, TracingContextListener {
     private static final ILog logger = LogManager.getLogger(AppAndServiceRegisterClient.class);
-    private static final String PROCESS_UUID = UUID.randomUUID().toString().replaceAll("-", "");
 
     private volatile GRPCChannelStatus status = GRPCChannelStatus.DISCONNECT;
     private volatile ApplicationRegisterServiceGrpc.ApplicationRegisterServiceBlockingStub applicationRegisterServiceBlockingStub;
     private volatile InstanceDiscoveryServiceGrpc.InstanceDiscoveryServiceBlockingStub instanceDiscoveryServiceBlockingStub;
     private volatile ServiceNameDiscoveryServiceGrpc.ServiceNameDiscoveryServiceBlockingStub serviceNameDiscoveryServiceBlockingStub;
     private volatile NetworkAddressRegisterServiceGrpc.NetworkAddressRegisterServiceBlockingStub networkAddressRegisterServiceBlockingStub;
+    private volatile ServiceInstancePingGrpc.ServiceInstancePingBlockingStub serviceInstancePingBlockingStub;
     private volatile ScheduledFuture<?> applicationRegisterFuture;
     private volatile long lastSegmentTime = -1;
 
@@ -66,6 +71,7 @@ public class AppAndServiceRegisterClient implements BootService, GRPCChannelList
             instanceDiscoveryServiceBlockingStub = InstanceDiscoveryServiceGrpc.newBlockingStub(channel);
             serviceNameDiscoveryServiceBlockingStub = ServiceNameDiscoveryServiceGrpc.newBlockingStub(channel);
             networkAddressRegisterServiceBlockingStub = NetworkAddressRegisterServiceGrpc.newBlockingStub(channel);
+            serviceInstancePingBlockingStub = ServiceInstancePingGrpc.newBlockingStub(channel);
         } else {
             applicationRegisterServiceBlockingStub = null;
             instanceDiscoveryServiceBlockingStub = null;
@@ -82,13 +88,13 @@ public class AppAndServiceRegisterClient implements BootService, GRPCChannelList
     @Override
     public void boot() throws Throwable {
         applicationRegisterFuture = Executors
-                .newSingleThreadScheduledExecutor(new DefaultNamedThreadFactory("AppAndServiceRegisterClient"))
-                .scheduleAtFixedRate(new RunnableWithExceptionProtection(this, new RunnableWithExceptionProtection.CallbackWhenException() {
-                    @Override
-                    public void handle(Throwable t) {
-                        logger.error("unexpected exception.", t);
-                    }
-                }), 0, Config.Collector.APP_AND_SERVICE_REGISTER_CHECK_INTERVAL, TimeUnit.SECONDS);
+            .newSingleThreadScheduledExecutor(new DefaultNamedThreadFactory("AppAndServiceRegisterClient"))
+            .scheduleAtFixedRate(new RunnableWithExceptionProtection(this, new RunnableWithExceptionProtection.CallbackWhenException() {
+                @Override
+                public void handle(Throwable t) {
+                    logger.error("unexpected exception.", t);
+                }
+            }), 0, Config.Collector.SERVICE_AND_ENDPOINT_REGISTER_CHECK_INTERVAL, TimeUnit.SECONDS);
     }
 
     @Override
@@ -105,15 +111,17 @@ public class AppAndServiceRegisterClient implements BootService, GRPCChannelList
     public void run() {
         logger.debug("AppAndServiceRegisterClient running, status:{}.", status);
         boolean shouldTry = true;
+        String instanceUUID = StringUtil.isEmpty(Config.Agent.INSTANCE_UUID) ? UUID.randomUUID().toString().replaceAll("-", "") : Config.Agent.INSTANCE_UUID;
         while (GRPCChannelStatus.CONNECTED.equals(status) && shouldTry) {
             shouldTry = false;
             try {
                 if (RemoteDownstreamConfig.Agent.APPLICATION_ID == DictionaryUtil.nullValue()) {
                     if (applicationRegisterServiceBlockingStub != null) {
                         ApplicationMapping applicationMapping = applicationRegisterServiceBlockingStub.applicationCodeRegister(
-                                Application.newBuilder().setApplicationCode(Config.Agent.APPLICATION_CODE).build());
+                            Application.newBuilder().setApplicationCode(Config.Agent.APPLICATION_CODE).build());
                         if (applicationMapping != null) {
                             RemoteDownstreamConfig.Agent.APPLICATION_ID = applicationMapping.getApplication().getValue();
+                            Reseter.INSTANCE.reportToRegisterFile();
                             shouldTry = true;
                         }
                     }
@@ -122,21 +130,24 @@ public class AppAndServiceRegisterClient implements BootService, GRPCChannelList
                         if (RemoteDownstreamConfig.Agent.APPLICATION_INSTANCE_ID == DictionaryUtil.nullValue()) {
 
                             ApplicationInstanceMapping instanceMapping = instanceDiscoveryServiceBlockingStub.registerInstance(ApplicationInstance.newBuilder()
-                                    .setApplicationId(RemoteDownstreamConfig.Agent.APPLICATION_ID)
-                                    .setAgentUUID(PROCESS_UUID)
-                                    .setRegisterTime(System.currentTimeMillis())
-                                    .setOsinfo(OSUtil.buildOSInfo())
-                                    .build());
+                                .setApplicationId(RemoteDownstreamConfig.Agent.APPLICATION_ID)
+                                .setAgentUUID(instanceUUID)
+                                .setRegisterTime(System.currentTimeMillis())
+                                .setOsinfo(OSUtil.buildOSInfo())
+                                .build());
                             if (instanceMapping.getApplicationInstanceId() != DictionaryUtil.nullValue()) {
                                 RemoteDownstreamConfig.Agent.APPLICATION_INSTANCE_ID
-                                        = instanceMapping.getApplicationInstanceId();
+                                    = instanceMapping.getApplicationInstanceId();
+                                Reseter.INSTANCE.setStatus(ResetStatus.OFF).reportToRegisterFile();
+
                             }
                         } else {
                             if (lastSegmentTime - System.currentTimeMillis() > 60 * 1000) {
-                                instanceDiscoveryServiceBlockingStub.heartbeat(ApplicationInstanceHeartbeat.newBuilder()
-                                        .setApplicationInstanceId(RemoteDownstreamConfig.Agent.APPLICATION_INSTANCE_ID)
-                                        .setHeartbeatTime(System.currentTimeMillis())
-                                        .build());
+                                serviceInstancePingBlockingStub.doPing(ServiceInstancePingPkg.newBuilder()
+                                    .setServiceInstanceId(RemoteDownstreamConfig.Agent.APPLICATION_INSTANCE_ID)
+                                    .setServiceInstanceUUID(instanceUUID)
+                                    .setTime(System.currentTimeMillis())
+                                    .build());
                             }
 
                             NetworkAddressDictionary.INSTANCE.syncRemoteDictionary(networkAddressRegisterServiceBlockingStub);

apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/remote/TraceSegmentServiceClient.java

@@ -25,9 +25,11 @@ import io.grpc.stub.StreamObserver;
 import org.apache.skywalking.apm.agent.core.boot.BootService;
 import org.apache.skywalking.apm.agent.core.boot.DefaultImplementor;
 import org.apache.skywalking.apm.agent.core.boot.ServiceManager;
+import org.apache.skywalking.apm.agent.core.conf.RemoteDownstreamConfig;
 import org.apache.skywalking.apm.agent.core.context.TracingContext;
 import org.apache.skywalking.apm.agent.core.context.TracingContextListener;
 import org.apache.skywalking.apm.agent.core.context.trace.TraceSegment;
+import org.apache.skywalking.apm.agent.core.dictionary.DictionaryUtil;
 import org.apache.skywalking.apm.agent.core.logging.api.ILog;
 import org.apache.skywalking.apm.agent.core.logging.api.LogManager;
 import org.apache.skywalking.apm.commons.datacarrier.DataCarrier;
@@ -155,7 +157,7 @@ public class TraceSegmentServiceClient implements BootService, IConsumer<TraceSe
 
     @Override
     public void afterFinished(TraceSegment traceSegment) {
-        if (traceSegment.isIgnore()) {
+        if (traceSegment.isIgnore() || RemoteDownstreamConfig.Agent.APPLICATION_INSTANCE_ID == DictionaryUtil.nullValue() || RemoteDownstreamConfig.Agent.APPLICATION_ID == DictionaryUtil.nullValue()) {
             return;
         }
         if (!carrier.produce(traceSegment)) {
@@ -173,4 +175,9 @@ public class TraceSegmentServiceClient implements BootService, IConsumer<TraceSe
         }
         this.status = status;
     }
+
+    public void clearCache() {
+        carrier.clear();
+    }
+
 }

apm-sniffer/apm-agent-core/src/main/resources/META-INF/services/org.apache.skywalking.apm.agent.core.boot.BootService

@@ -23,3 +23,4 @@ org.apache.skywalking.apm.agent.core.remote.GRPCChannelManager
 org.apache.skywalking.apm.agent.core.jvm.JVMService
 org.apache.skywalking.apm.agent.core.remote.AppAndServiceRegisterClient
 org.apache.skywalking.apm.agent.core.context.ContextManagerExtendService
+org.apache.skywalking.apm.agent.core.listener.ResetConfListener
\ No newline at end of file

apm-sniffer/apm-agent-core/src/test/java/org/apache/skywalking/apm/agent/core/boot/ServiceManagerTest.java

@@ -55,7 +55,7 @@ public class ServiceManagerTest {
     public void testServiceDependencies() throws Exception {
         HashMap<Class, BootService> registryService = getFieldValue(ServiceManager.INSTANCE, "bootedServices");
 
-        assertThat(registryService.size(), is(7));
+        assertThat(registryService.size(), is(8));
 
         assertTraceSegmentServiceClient(ServiceManager.INSTANCE.findService(TraceSegmentServiceClient.class));
         assertContextManager(ServiceManager.INSTANCE.findService(ContextManager.class));

apm-sniffer/config/agent.config

@@ -43,3 +43,12 @@ collector.backend_service=127.0.0.1:10800
 
 # Logging level
 logging.level=DEBUG
+
+#Specify register.status dir,if dir not exists or it is a file then default AGENT_HOME/option
+#agent.register_status_dir=register_dir
+
+#Specify instance_uuid to ensure that the whole show is unique, for example: applicationName_ip_12
+#agent.instance_uuid = applicationName_ip_1
+
+#enabled means that the reset function is enabled, and disabled means that the reset function is not enabled. A reset can be triggered by modifying the configuration file only if the reset feature is enabled.
+#agent.reseter_listener = disabled

oap-server/server-core/src/main/java/org/apache/skywalking/oap/server/core/register/service/ServiceInstanceInventoryRegister.java

@@ -109,4 +109,4 @@ public class ServiceInstanceInventoryRegister implements IServiceInstanceInvento
             logger.warn("Service instance {} heartbeat, but not found in storage.");
         }
     }
-}
+}
\ No newline at end of file

query-protocol @ 3a83be79

-Subproject commit 1122e97b5604ae96447bd58ecdb248d7e02952aa
+Subproject commit 3a83be79a9c23aad6576ed2a4a04b82de6d7a829

oap-server/server-receiver-plugin/skywalking-register-receiver-plugin/src/main/java/org/apache/skywalking/oap/server/receiver/register/provider/RegisterModuleProvider.java

@@ -22,7 +22,6 @@ import org.apache.skywalking.oap.server.core.CoreModule;
 import org.apache.skywalking.oap.server.core.server.*;
 import org.apache.skywalking.oap.server.library.module.*;
 import org.apache.skywalking.oap.server.receiver.register.module.RegisterModule;
-import org.apache.skywalking.oap.server.receiver.register.provider.handler.v5.grpc.*;
 import org.apache.skywalking.oap.server.receiver.register.provider.handler.v5.rest.*;
 
 /**
@@ -46,12 +45,6 @@ public class RegisterModuleProvider extends ModuleProvider {
     }
 
     @Override public void start() {
-        GRPCHandlerRegister grpcHandlerRegister = getManager().find(CoreModule.NAME).getService(GRPCHandlerRegister.class);
-        grpcHandlerRegister.addHandler(new ApplicationRegisterHandler(getManager()));
-        grpcHandlerRegister.addHandler(new InstanceDiscoveryServiceHandler(getManager()));
-        grpcHandlerRegister.addHandler(new ServiceNameDiscoveryHandler(getManager()));
-        grpcHandlerRegister.addHandler(new NetworkAddressRegisterServiceHandler(getManager()));
-
         JettyHandlerRegister jettyHandlerRegister = getManager().find(CoreModule.NAME).getService(JettyHandlerRegister.class);
         jettyHandlerRegister.addHandler(new ApplicationRegisterServletHandler(getManager()));
         jettyHandlerRegister.addHandler(new InstanceDiscoveryServletHandler(getManager()));

oap-server/server-receiver-plugin/skywalking-register-receiver-plugin/src/main/java/org/apache/skywalking/oap/server/receiver/register/provider/handler/v5/ServiceInstancePingPkgHandler.java

+/*
+ *
+ *  * 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.skywalking.oap.server.receiver.register.provider.handler.v5;
+
+import io.grpc.stub.StreamObserver;
+import org.apache.skywalking.apm.network.common.Commands;
+import org.apache.skywalking.apm.network.register.ServiceInstancePingGrpc;
+import org.apache.skywalking.apm.network.register.ServiceInstancePingPkg;
+import org.apache.skywalking.oap.server.core.Const;
+import org.apache.skywalking.oap.server.core.CoreModule;
+import org.apache.skywalking.oap.server.core.register.ServiceInstanceInventory;
+import org.apache.skywalking.oap.server.core.register.service.IServiceInstanceInventoryRegister;
+import org.apache.skywalking.oap.server.core.storage.StorageModule;
+import org.apache.skywalking.oap.server.core.storage.cache.IServiceInstanceInventoryCacheDAO;
+import org.apache.skywalking.oap.server.library.module.ModuleManager;
+import org.apache.skywalking.oap.server.library.server.grpc.GRPCHandler;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class ServiceInstancePingPkgHandler extends ServiceInstancePingGrpc.ServiceInstancePingImplBase implements GRPCHandler {
+    private static final Logger logger = LoggerFactory.getLogger(ServiceInstancePingPkgHandler.class);
+
+    private final IServiceInstanceInventoryCacheDAO instanceInventoryCacheDAO;
+    private final IServiceInstanceInventoryRegister serviceInstanceInventoryRegister;
+
+    public ServiceInstancePingPkgHandler(ModuleManager moduleManager) {
+        this.instanceInventoryCacheDAO = moduleManager.find(StorageModule.NAME).getService(IServiceInstanceInventoryCacheDAO.class);
+        this.serviceInstanceInventoryRegister = moduleManager.find(CoreModule.NAME).getService(IServiceInstanceInventoryRegister.class);
+
+    }
+
+    @Override public void doPing(ServiceInstancePingPkg request, StreamObserver<Commands> responseObserver) {
+
+        ServiceInstanceInventory serviceInstanceInventory = instanceInventoryCacheDAO.get(request.getServiceInstanceId());
+        if (request.getServiceInstanceUUID().equals(serviceInstanceInventory.getName()) || serviceInstanceInventory.getServiceId() == Const.NONE) {
+            logger.error("Your metadata loss,please set the status in reset.status in the agent {} to ON to trigger a reset!", request.getServiceInstanceUUID());
+        } else {
+            serviceInstanceInventoryRegister.heartbeat(request.getServiceInstanceId(), request.getTime());
+        }
+
+    }
+}