Change apm-collector-stream from collector module to common codes.

Make agent gRPC to be a collector module.
Make agent jetty to be a collector module.
Make agent stream to be a collector module.

apm-collector/apm-collector-agent-grpc/collector-agent-grpc-define/pom.xml

@@ -21,13 +21,13 @@
          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>
-        <artifactId>apm-collector-agent</artifactId>
+        <artifactId>apm-collector-agent-grpc</artifactId>
         <groupId>org.skywalking</groupId>
         <version>3.2.5-2017</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
-    <artifactId>collector-agent-define</artifactId>
+    <artifactId>collector-agent-grpc-define</artifactId>
     <packaging>jar</packaging>
 
-</project>
+</project>

apm-collector/apm-collector-agent-grpc/collector-agent-grpc-define/src/main/java/org/skywalking/apm/collector/agent/grpc/AgentGRPCModule.java

@@ -16,16 +16,16 @@
  * Project repository: https://github.com/OpenSkywalking/skywalking
  */
 
-package org.skywalking.apm.collector.agent;
+package org.skywalking.apm.collector.agent.grpc;
 
 import org.skywalking.apm.collector.core.module.Module;
 
 /**
  * @author peng-yongsheng
  */
-public class AgentModule extends Module {
+public class AgentGRPCModule extends Module {
 
-    public static final String NAME = "agent";
+    public static final String NAME = "agent_gRPC";
 
     @Override public String name() {
         return NAME;

apm-collector/apm-collector-agent-grpc/collector-agent-grpc-define/src/main/resources/META-INF/services/org.skywalking.apm.collector.core.module.Module

@@ -16,4 +16,4 @@
 # Project repository: https://github.com/OpenSkywalking/skywalking
 #
 
-org.skywalking.apm.collector.stream.StreamModule
+org.skywalking.apm.collector.agent.grpc.AgentGRPCModule

apm-collector/apm-collector-agent-grpc/collector-agent-grpc-provider/pom.xml

@@ -0,0 +1,60 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Copyright 2017, OpenSkywalking Organization All rights reserved.
+  ~
+  ~ 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 repository: https://github.com/OpenSkywalking/skywalking
+  -->
+
+<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>
+        <artifactId>apm-collector-agent-grpc</artifactId>
+        <groupId>org.skywalking</groupId>
+        <version>3.2.5-2017</version>
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
+
+    <artifactId>collector-agent-grpc-provider</artifactId>
+    <packaging>jar</packaging>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.skywalking</groupId>
+            <artifactId>collector-agent-grpc-define</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.skywalking</groupId>
+            <artifactId>collector-grpc-manager-define</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.skywalking</groupId>
+            <artifactId>collector-cluster-define</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.skywalking</groupId>
+            <artifactId>collector-naming-define</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.skywalking</groupId>
+            <artifactId>collector-agent-stream-define</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+    </dependencies>
+</project>

apm-collector/apm-collector-agent-grpc/collector-agent-grpc-provider/src/main/java/org/skywalking/apm/collector/agent/grpc/AgentModuleGRPCProvider.java

@@ -19,7 +19,6 @@
 package org.skywalking.apm.collector.agent.grpc;
 
 import java.util.Properties;
-import org.skywalking.apm.collector.agent.AgentModule;
 import org.skywalking.apm.collector.agent.grpc.handler.ApplicationRegisterServiceHandler;
 import org.skywalking.apm.collector.agent.grpc.handler.InstanceDiscoveryServiceHandler;
 import org.skywalking.apm.collector.agent.grpc.handler.JVMMetricsServiceHandler;
@@ -27,8 +26,7 @@ import org.skywalking.apm.collector.agent.grpc.handler.ServiceNameDiscoveryServi
 import org.skywalking.apm.collector.agent.grpc.handler.TraceSegmentServiceHandler;
 import org.skywalking.apm.collector.agent.grpc.handler.naming.AgentGRPCNamingHandler;
 import org.skywalking.apm.collector.agent.grpc.handler.naming.AgentGRPCNamingListener;
-import org.skywalking.apm.collector.agent.stream.AgentStreamSingleton;
-import org.skywalking.apm.collector.cache.CacheModule;
+import org.skywalking.apm.collector.agent.stream.AgentStreamModule;
 import org.skywalking.apm.collector.cluster.ClusterModule;
 import org.skywalking.apm.collector.cluster.service.ModuleListenerService;
 import org.skywalking.apm.collector.cluster.service.ModuleRegisterService;
@@ -39,10 +37,7 @@ import org.skywalking.apm.collector.grpc.manager.GRPCManagerModule;
 import org.skywalking.apm.collector.grpc.manager.service.GRPCManagerService;
 import org.skywalking.apm.collector.naming.NamingModule;
 import org.skywalking.apm.collector.naming.service.NamingHandlerRegisterService;
-import org.skywalking.apm.collector.remote.RemoteModule;
 import org.skywalking.apm.collector.server.Server;
-import org.skywalking.apm.collector.storage.StorageModule;
-import org.skywalking.apm.collector.stream.StreamModule;
 
 /**
  * @author peng-yongsheng
@@ -58,7 +53,7 @@ public class AgentModuleGRPCProvider extends ModuleProvider {
     }
 
     @Override public Class<? extends Module> module() {
-        return AgentModule.class;
+        return AgentGRPCModule.class;
     }
 
     @Override public void prepare(Properties config) throws ServiceNotProvidedException {
@@ -70,7 +65,7 @@ public class AgentModuleGRPCProvider extends ModuleProvider {
         Integer port = (Integer)config.get(PORT);
 
         ModuleRegisterService moduleRegisterService = getManager().find(ClusterModule.NAME).getService(ModuleRegisterService.class);
-        moduleRegisterService.register(AgentModule.NAME, this.name(), new AgentModuleGRPCRegistration(host, port));
+        moduleRegisterService.register(AgentGRPCModule.NAME, this.name(), new AgentModuleGRPCRegistration(host, port));
 
         AgentGRPCNamingListener namingListener = new AgentGRPCNamingListener();
         ModuleListenerService moduleListenerService = getManager().find(ClusterModule.NAME).getService(ModuleListenerService.class);
@@ -82,7 +77,6 @@ public class AgentModuleGRPCProvider extends ModuleProvider {
         GRPCManagerService managerService = getManager().find(GRPCManagerModule.NAME).getService(GRPCManagerService.class);
         Server gRPCServer = managerService.createIfAbsent(host, port);
 
-        AgentStreamSingleton.createInstanceIfAbsent(getManager());
         addHandlers(gRPCServer);
     }
 
@@ -91,14 +85,14 @@ public class AgentModuleGRPCProvider extends ModuleProvider {
     }
 
     @Override public String[] requiredModules() {
-        return new String[] {ClusterModule.NAME, NamingModule.NAME, StorageModule.NAME, GRPCManagerModule.NAME, CacheModule.NAME, RemoteModule.NAME, StreamModule.NAME};
+        return new String[] {ClusterModule.NAME, NamingModule.NAME, GRPCManagerModule.NAME, AgentStreamModule.NAME};
     }
 
     private void addHandlers(Server gRPCServer) {
         gRPCServer.addHandler(new ApplicationRegisterServiceHandler(getManager()));
         gRPCServer.addHandler(new InstanceDiscoveryServiceHandler(getManager()));
         gRPCServer.addHandler(new ServiceNameDiscoveryServiceHandler(getManager()));
-        gRPCServer.addHandler(new JVMMetricsServiceHandler());
+        gRPCServer.addHandler(new JVMMetricsServiceHandler(getManager()));
         gRPCServer.addHandler(new TraceSegmentServiceHandler(getManager()));
     }
 }

apm-collector/apm-collector-agent-grpc/collector-agent-grpc-provider/src/main/java/org/skywalking/apm/collector/agent/grpc/handler/ApplicationRegisterServiceHandler.java

@@ -20,7 +20,8 @@ package org.skywalking.apm.collector.agent.grpc.handler;
 
 import com.google.protobuf.ProtocolStringList;
 import io.grpc.stub.StreamObserver;
-import org.skywalking.apm.collector.agent.stream.worker.register.ApplicationIDService;
+import org.skywalking.apm.collector.agent.stream.AgentStreamModule;
+import org.skywalking.apm.collector.agent.stream.service.register.IApplicationIDService;
 import org.skywalking.apm.collector.core.module.ModuleManager;
 import org.skywalking.apm.collector.server.grpc.GRPCHandler;
 import org.skywalking.apm.network.proto.Application;
@@ -37,10 +38,10 @@ public class ApplicationRegisterServiceHandler extends ApplicationRegisterServic
 
     private final Logger logger = LoggerFactory.getLogger(ApplicationRegisterServiceHandler.class);
 
-    private final ApplicationIDService applicationIDService;
+    private final IApplicationIDService applicationIDService;
 
     public ApplicationRegisterServiceHandler(ModuleManager moduleManager) {
-        applicationIDService = new ApplicationIDService(moduleManager);
+        applicationIDService = moduleManager.find(AgentStreamModule.NAME).getService(IApplicationIDService.class);
     }
 
     @Override public void register(Application request, StreamObserver<ApplicationMapping> responseObserver) {

apm-collector/apm-collector-agent-grpc/collector-agent-grpc-provider/src/main/java/org/skywalking/apm/collector/agent/grpc/handler/InstanceDiscoveryServiceHandler.java

@@ -21,7 +21,8 @@ package org.skywalking.apm.collector.agent.grpc.handler;
 import com.google.gson.JsonArray;
 import com.google.gson.JsonObject;
 import io.grpc.stub.StreamObserver;
-import org.skywalking.apm.collector.agent.stream.worker.register.InstanceIDService;
+import org.skywalking.apm.collector.agent.stream.AgentStreamModule;
+import org.skywalking.apm.collector.agent.stream.service.register.IInstanceIDService;
 import org.skywalking.apm.collector.core.module.ModuleManager;
 import org.skywalking.apm.collector.core.util.TimeBucketUtils;
 import org.skywalking.apm.collector.server.grpc.GRPCHandler;
@@ -41,10 +42,10 @@ public class InstanceDiscoveryServiceHandler extends InstanceDiscoveryServiceGrp
 
     private final Logger logger = LoggerFactory.getLogger(InstanceDiscoveryServiceHandler.class);
 
-    private final InstanceIDService instanceIDService;
+    private final IInstanceIDService instanceIDService;
 
     public InstanceDiscoveryServiceHandler(ModuleManager moduleManager) {
-        this.instanceIDService = new InstanceIDService(moduleManager);
+        this.instanceIDService = moduleManager.find(AgentStreamModule.NAME).getService(IInstanceIDService.class);
     }
 
     @Override

apm-collector/apm-collector-agent-grpc/collector-agent-grpc-provider/src/main/java/org/skywalking/apm/collector/agent/grpc/handler/JVMMetricsServiceHandler.java

@@ -0,0 +1,101 @@
+/*
+ * Copyright 2017, OpenSkywalking Organization All rights reserved.
+ *
+ * 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 repository: https://github.com/OpenSkywalking/skywalking
+ */
+
+package org.skywalking.apm.collector.agent.grpc.handler;
+
+import io.grpc.stub.StreamObserver;
+import java.util.List;
+import org.skywalking.apm.collector.agent.stream.AgentStreamModule;
+import org.skywalking.apm.collector.agent.stream.service.jvm.ICpuMetricService;
+import org.skywalking.apm.collector.agent.stream.service.jvm.IGCMetricService;
+import org.skywalking.apm.collector.agent.stream.service.jvm.IInstanceHeartBeatService;
+import org.skywalking.apm.collector.agent.stream.service.jvm.IMemoryMetricService;
+import org.skywalking.apm.collector.agent.stream.service.jvm.IMemoryPoolMetricService;
+import org.skywalking.apm.collector.core.module.ModuleManager;
+import org.skywalking.apm.collector.core.util.TimeBucketUtils;
+import org.skywalking.apm.collector.server.grpc.GRPCHandler;
+import org.skywalking.apm.network.proto.CPU;
+import org.skywalking.apm.network.proto.Downstream;
+import org.skywalking.apm.network.proto.GC;
+import org.skywalking.apm.network.proto.JVMMetrics;
+import org.skywalking.apm.network.proto.JVMMetricsServiceGrpc;
+import org.skywalking.apm.network.proto.Memory;
+import org.skywalking.apm.network.proto.MemoryPool;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * @author peng-yongsheng
+ */
+public class JVMMetricsServiceHandler extends JVMMetricsServiceGrpc.JVMMetricsServiceImplBase implements GRPCHandler {
+
+    private final Logger logger = LoggerFactory.getLogger(JVMMetricsServiceHandler.class);
+
+    private final ICpuMetricService cpuMetricService;
+    private final IGCMetricService gcMetricService;
+    private final IMemoryMetricService memoryMetricService;
+    private final IMemoryPoolMetricService memoryPoolMetricService;
+    private final IInstanceHeartBeatService instanceHeartBeatService;
+
+    public JVMMetricsServiceHandler(ModuleManager moduleManager) {
+        this.cpuMetricService = moduleManager.find(AgentStreamModule.NAME).getService(ICpuMetricService.class);
+        this.gcMetricService = moduleManager.find(AgentStreamModule.NAME).getService(IGCMetricService.class);
+        this.memoryMetricService = moduleManager.find(AgentStreamModule.NAME).getService(IMemoryMetricService.class);
+        this.memoryPoolMetricService = moduleManager.find(AgentStreamModule.NAME).getService(IMemoryPoolMetricService.class);
+        this.instanceHeartBeatService = moduleManager.find(AgentStreamModule.NAME).getService(IInstanceHeartBeatService.class);
+    }
+
+    @Override public void collect(JVMMetrics request, StreamObserver<Downstream> responseObserver) {
+        int instanceId = request.getApplicationInstanceId();
+        logger.debug("receive the jvm metric from application instance, id: {}", instanceId);
+
+        request.getMetricsList().forEach(metric -> {
+            long time = TimeBucketUtils.INSTANCE.getSecondTimeBucket(metric.getTime());
+            sendToInstanceHeartBeatService(instanceId, metric.getTime());
+            sendToCpuMetricService(instanceId, time, metric.getCpu());
+            sendToMemoryMetricService(instanceId, time, metric.getMemoryList());
+            sendToMemoryPoolMetricService(instanceId, time, metric.getMemoryPoolList());
+            sendToGCMetricService(instanceId, time, metric.getGcList());
+        });
+
+        responseObserver.onNext(Downstream.newBuilder().build());
+        responseObserver.onCompleted();
+    }
+
+    private void sendToInstanceHeartBeatService(int instanceId, long heartBeatTime) {
+        instanceHeartBeatService.send(instanceId, heartBeatTime);
+    }
+
+    private void sendToMemoryMetricService(int instanceId, long timeBucket, List<Memory> memories) {
+        memories.forEach(memory -> memoryMetricService.send(instanceId, timeBucket, memory.getIsHeap(), memory.getInit(), memory.getMax(), memory.getUsed(), memory.getCommitted()));
+    }
+
+    private void sendToMemoryPoolMetricService(int instanceId, long timeBucket,
+        List<MemoryPool> memoryPools) {
+
+        memoryPools.forEach(memoryPool -> memoryPoolMetricService.send(instanceId, timeBucket, memoryPool.getType().getNumber(), memoryPool.getInit(), memoryPool.getMax(), memoryPool.getUsed(), memoryPool.getCommited()));
+    }
+
+    private void sendToCpuMetricService(int instanceId, long timeBucket, CPU cpu) {
+        cpuMetricService.send(instanceId, timeBucket, cpu.getUsagePercent());
+    }
+
+    private void sendToGCMetricService(int instanceId, long timeBucket, List<GC> gcs) {
+        gcs.forEach(gc -> gcMetricService.send(instanceId, timeBucket, gc.getPhraseValue(), gc.getCount(), gc.getTime()));
+    }
+}

apm-collector/apm-collector-agent-grpc/collector-agent-grpc-provider/src/main/java/org/skywalking/apm/collector/agent/grpc/handler/ServiceNameDiscoveryServiceHandler.java

@@ -20,7 +20,8 @@ package org.skywalking.apm.collector.agent.grpc.handler;
 
 import io.grpc.stub.StreamObserver;
 import java.util.List;
-import org.skywalking.apm.collector.agent.stream.worker.register.ServiceNameService;
+import org.skywalking.apm.collector.agent.stream.AgentStreamModule;
+import org.skywalking.apm.collector.agent.stream.service.register.IServiceNameService;
 import org.skywalking.apm.collector.core.module.ModuleManager;
 import org.skywalking.apm.collector.server.grpc.GRPCHandler;
 import org.skywalking.apm.network.proto.ServiceNameCollection;
@@ -38,10 +39,10 @@ public class ServiceNameDiscoveryServiceHandler extends ServiceNameDiscoveryServ
 
     private final Logger logger = LoggerFactory.getLogger(ServiceNameDiscoveryServiceHandler.class);
 
-    private final ServiceNameService serviceNameService;
+    private final IServiceNameService serviceNameService;
 
     public ServiceNameDiscoveryServiceHandler(ModuleManager moduleManager) {
-        this.serviceNameService = new ServiceNameService(moduleManager);
+        this.serviceNameService = moduleManager.find(AgentStreamModule.NAME).getService(IServiceNameService.class);
     }
 
     @Override public void discovery(ServiceNameCollection request,

apm-collector/apm-collector-agent-grpc/collector-agent-grpc-provider/src/main/java/org/skywalking/apm/collector/agent/grpc/handler/TraceSegmentServiceHandler.java

@@ -19,7 +19,8 @@
 package org.skywalking.apm.collector.agent.grpc.handler;
 
 import io.grpc.stub.StreamObserver;
-import org.skywalking.apm.collector.agent.stream.parser.SegmentParse;
+import org.skywalking.apm.collector.agent.stream.AgentStreamModule;
+import org.skywalking.apm.collector.agent.stream.service.trace.ITraceSegmentService;
 import org.skywalking.apm.collector.core.module.ModuleManager;
 import org.skywalking.apm.collector.server.grpc.GRPCHandler;
 import org.skywalking.apm.network.proto.Downstream;
@@ -35,18 +36,17 @@ public class TraceSegmentServiceHandler extends TraceSegmentServiceGrpc.TraceSeg
 
     private final Logger logger = LoggerFactory.getLogger(TraceSegmentServiceHandler.class);
 
-    private final ModuleManager moduleManager;
+    private final ITraceSegmentService traceSegmentService;
 
     public TraceSegmentServiceHandler(ModuleManager moduleManager) {
-        this.moduleManager = moduleManager;
+        this.traceSegmentService = moduleManager.find(AgentStreamModule.NAME).getService(ITraceSegmentService.class);
     }
 
     @Override public StreamObserver<UpstreamSegment> collect(StreamObserver<Downstream> responseObserver) {
         return new StreamObserver<UpstreamSegment>() {
             @Override public void onNext(UpstreamSegment segment) {
                 logger.debug("receive segment");
-                SegmentParse segmentParse = new SegmentParse(moduleManager);
-                segmentParse.parse(segment, SegmentParse.Source.Agent);
+                traceSegmentService.send(segment);
             }
 
             @Override public void onError(Throwable throwable) {

apm-collector/apm-collector-agent-grpc/collector-agent-grpc-provider/src/main/java/org/skywalking/apm/collector/agent/grpc/handler/naming/AgentGRPCNamingHandler.java

@@ -37,8 +37,7 @@ public class AgentGRPCNamingHandler extends JettyHandler {
     }
 
     @Override public String pathSpec() {
-//        return "/agent/gRPC";
-        return "/agentstream/grpc";
+        return "/agent/gRPC";
     }
 
     @Override protected JsonElement doGet(HttpServletRequest req) throws ArgumentsParseException {

apm-collector/apm-collector-agent-grpc/collector-agent-grpc-provider/src/main/java/org/skywalking/apm/collector/agent/grpc/handler/naming/AgentGRPCNamingListener.java

@@ -18,7 +18,7 @@
 
 package org.skywalking.apm.collector.agent.grpc.handler.naming;
 
-import org.skywalking.apm.collector.agent.AgentModule;
+import org.skywalking.apm.collector.agent.grpc.AgentGRPCModule;
 import org.skywalking.apm.collector.agent.grpc.AgentModuleGRPCProvider;
 import org.skywalking.apm.collector.cluster.ClusterModuleListener;
 
@@ -27,7 +27,7 @@ import org.skywalking.apm.collector.cluster.ClusterModuleListener;
  */
 public class AgentGRPCNamingListener extends ClusterModuleListener {
 
-    public static final String PATH = "/" + AgentModule.NAME + "/" + AgentModuleGRPCProvider.NAME;
+    public static final String PATH = "/" + AgentGRPCModule.NAME + "/" + AgentModuleGRPCProvider.NAME;
 
     @Override public String path() {
         return PATH;

apm-collector/apm-collector-agent-grpc/pom.xml

@@ -21,25 +21,24 @@
          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>
-        <artifactId>apm-collector-agent</artifactId>
+        <artifactId>apm-collector</artifactId>
         <groupId>org.skywalking</groupId>
         <version>3.2.5-2017</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
-    <artifactId>collector-agent-stream</artifactId>
-    <packaging>jar</packaging>
+    <artifactId>apm-collector-agent-grpc</artifactId>
+    <packaging>pom</packaging>
+    <modules>
+        <module>collector-agent-grpc-define</module>
+        <module>collector-agent-grpc-provider</module>
+    </modules>
 
     <dependencies>
         <dependency>
             <groupId>org.skywalking</groupId>
-            <artifactId>collector-stream-provider</artifactId>
-            <version>${project.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.skywalking</groupId>
-            <artifactId>collector-cache-define</artifactId>
+            <artifactId>apm-collector-core</artifactId>
             <version>${project.version}</version>
         </dependency>
     </dependencies>
-</project>
+</project>

apm-collector/apm-collector-agent-jetty/collector-agent-jetty-define/pom.xml

@@ -21,12 +21,13 @@
          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>
-        <artifactId>apm-collector-stream</artifactId>
+        <artifactId>apm-collector-agent-jetty</artifactId>
         <groupId>org.skywalking</groupId>
         <version>3.2.5-2017</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
-    <artifactId>collector-stream-define</artifactId>
+    <artifactId>collector-agent-jetty-define</artifactId>
     <packaging>jar</packaging>
+
 </project>

apm-collector/apm-collector-agent-jetty/collector-agent-jetty-define/src/main/java/org/skywalking/apm/collector/agent/jetty/AgentJettyModule.java

@@ -16,16 +16,16 @@
  * Project repository: https://github.com/OpenSkywalking/skywalking
  */
 
-package org.skywalking.apm.collector.stream;
+package org.skywalking.apm.collector.agent.jetty;
 
 import org.skywalking.apm.collector.core.module.Module;
 
 /**
  * @author peng-yongsheng
  */
-public class StreamModule extends Module {
+public class AgentJettyModule extends Module {
 
-    public static final String NAME = "stream";
+    public static final String NAME = "agent_jetty";
 
     @Override public String name() {
         return NAME;

apm-collector/apm-collector-agent-jetty/collector-agent-jetty-define/src/main/resources/META-INF/services/org.skywalking.apm.collector.core.module.Module

@@ -16,4 +16,4 @@
 # Project repository: https://github.com/OpenSkywalking/skywalking
 #
 
-org.skywalking.apm.collector.agent.AgentModule
+org.skywalking.apm.collector.agent.jetty.AgentJettyModule

apm-collector/apm-collector-agent-jetty/collector-agent-jetty-provider/pom.xml

@@ -21,7 +21,7 @@
          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>
-        <artifactId>apm-collector-agent</artifactId>
+        <artifactId>apm-collector-agent-jetty</artifactId>
         <groupId>org.skywalking</groupId>
         <version>3.2.5-2017</version>
     </parent>
@@ -33,12 +33,7 @@
     <dependencies>
         <dependency>
             <groupId>org.skywalking</groupId>
-            <artifactId>collector-agent-define</artifactId>
-            <version>${project.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.skywalking</groupId>
-            <artifactId>collector-agent-stream</artifactId>
+            <artifactId>collector-agent-jetty-define</artifactId>
             <version>${project.version}</version>
         </dependency>
         <dependency>
@@ -46,5 +41,20 @@
             <artifactId>collector-jetty-manager-define</artifactId>
             <version>${project.version}</version>
         </dependency>
+        <dependency>
+            <groupId>org.skywalking</groupId>
+            <artifactId>collector-cluster-define</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.skywalking</groupId>
+            <artifactId>collector-naming-define</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.skywalking</groupId>
+            <artifactId>collector-agent-stream-define</artifactId>
+            <version>${project.version}</version>
+        </dependency>
     </dependencies>
 </project>

apm-collector/apm-collector-agent-jetty/collector-agent-jetty-provider/src/main/java/org/skywalking/apm/collector/agent/jetty/AgentModuleJettyProvider.java

@@ -19,14 +19,13 @@
 package org.skywalking.apm.collector.agent.jetty;
 
 import java.util.Properties;
-import org.skywalking.apm.collector.agent.AgentModule;
 import org.skywalking.apm.collector.agent.jetty.handler.ApplicationRegisterServletHandler;
 import org.skywalking.apm.collector.agent.jetty.handler.InstanceDiscoveryServletHandler;
 import org.skywalking.apm.collector.agent.jetty.handler.ServiceNameDiscoveryServiceHandler;
 import org.skywalking.apm.collector.agent.jetty.handler.TraceSegmentServletHandler;
 import org.skywalking.apm.collector.agent.jetty.handler.naming.AgentJettyNamingHandler;
 import org.skywalking.apm.collector.agent.jetty.handler.naming.AgentJettyNamingListener;
-import org.skywalking.apm.collector.cache.CacheModule;
+import org.skywalking.apm.collector.agent.stream.AgentStreamModule;
 import org.skywalking.apm.collector.cluster.ClusterModule;
 import org.skywalking.apm.collector.cluster.service.ModuleListenerService;
 import org.skywalking.apm.collector.cluster.service.ModuleRegisterService;
@@ -38,8 +37,6 @@ import org.skywalking.apm.collector.jetty.manager.service.JettyManagerService;
 import org.skywalking.apm.collector.naming.NamingModule;
 import org.skywalking.apm.collector.naming.service.NamingHandlerRegisterService;
 import org.skywalking.apm.collector.server.Server;
-import org.skywalking.apm.collector.storage.StorageModule;
-import org.skywalking.apm.collector.stream.StreamModule;
 
 /**
  * @author peng-yongsheng
@@ -56,7 +53,7 @@ public class AgentModuleJettyProvider extends ModuleProvider {
     }
 
     @Override public Class<? extends Module> module() {
-        return AgentModule.class;
+        return AgentJettyModule.class;
     }
 
     @Override public void prepare(Properties config) throws ServiceNotProvidedException {
@@ -69,7 +66,7 @@ public class AgentModuleJettyProvider extends ModuleProvider {
         String contextPath = config.getProperty(CONTEXT_PATH);
 
         ModuleRegisterService moduleRegisterService = getManager().find(ClusterModule.NAME).getService(ModuleRegisterService.class);
-        moduleRegisterService.register(AgentModule.NAME, this.name(), new AgentModuleJettyRegistration(host, port, contextPath));
+        moduleRegisterService.register(AgentJettyModule.NAME, this.name(), new AgentModuleJettyRegistration(host, port, contextPath));
 
         AgentJettyNamingListener namingListener = new AgentJettyNamingListener();
         ModuleListenerService moduleListenerService = getManager().find(ClusterModule.NAME).getService(ModuleListenerService.class);
@@ -88,7 +85,7 @@ public class AgentModuleJettyProvider extends ModuleProvider {
     }
 
     @Override public String[] requiredModules() {
-        return new String[] {ClusterModule.NAME, NamingModule.NAME, StorageModule.NAME, JettyManagerModule.NAME, CacheModule.NAME, StreamModule.NAME};
+        return new String[] {ClusterModule.NAME, NamingModule.NAME, JettyManagerModule.NAME, AgentStreamModule.NAME};
     }
 
     private void addHandlers(Server jettyServer) {

apm-collector/apm-collector-agent-jetty/collector-agent-jetty-provider/src/main/java/org/skywalking/apm/collector/agent/jetty/handler/ApplicationRegisterServletHandler.java

@@ -24,7 +24,8 @@ import com.google.gson.JsonElement;
 import com.google.gson.JsonObject;
 import java.io.IOException;
 import javax.servlet.http.HttpServletRequest;
-import org.skywalking.apm.collector.agent.stream.worker.register.ApplicationIDService;
+import org.skywalking.apm.collector.agent.stream.AgentStreamModule;
+import org.skywalking.apm.collector.agent.stream.service.register.IApplicationIDService;
 import org.skywalking.apm.collector.core.module.ModuleManager;
 import org.skywalking.apm.collector.server.jetty.ArgumentsParseException;
 import org.skywalking.apm.collector.server.jetty.JettyHandler;
@@ -38,13 +39,13 @@ public class ApplicationRegisterServletHandler extends JettyHandler {
 
     private final Logger logger = LoggerFactory.getLogger(ApplicationRegisterServletHandler.class);
 
-    private final ApplicationIDService applicationIDService;
+    private final IApplicationIDService applicationIDService;
     private Gson gson = new Gson();
     private static final String APPLICATION_CODE = "c";
     private static final String APPLICATION_ID = "i";
 
     public ApplicationRegisterServletHandler(ModuleManager moduleManager) {
-        this.applicationIDService = new ApplicationIDService(moduleManager);
+        this.applicationIDService = moduleManager.find(AgentStreamModule.NAME).getService(IApplicationIDService.class);
     }
 
     @Override public String pathSpec() {

apm-collector/apm-collector-agent-jetty/collector-agent-jetty-provider/src/main/java/org/skywalking/apm/collector/agent/jetty/handler/InstanceDiscoveryServletHandler.java

@@ -23,7 +23,8 @@ import com.google.gson.JsonElement;
 import com.google.gson.JsonObject;
 import java.io.IOException;
 import javax.servlet.http.HttpServletRequest;
-import org.skywalking.apm.collector.agent.stream.worker.register.InstanceIDService;
+import org.skywalking.apm.collector.agent.stream.AgentStreamModule;
+import org.skywalking.apm.collector.agent.stream.service.register.IInstanceIDService;
 import org.skywalking.apm.collector.core.module.ModuleManager;
 import org.skywalking.apm.collector.server.jetty.ArgumentsParseException;
 import org.skywalking.apm.collector.server.jetty.JettyHandler;
@@ -37,8 +38,8 @@ public class InstanceDiscoveryServletHandler extends JettyHandler {
 
     private final Logger logger = LoggerFactory.getLogger(InstanceDiscoveryServletHandler.class);
 
-    private final InstanceIDService instanceIDService;
-    private Gson gson = new Gson();
+    private final IInstanceIDService instanceIDService;
+    private final Gson gson = new Gson();
 
     private static final String APPLICATION_ID = "ai";
     private static final String AGENT_UUID = "au";
@@ -47,7 +48,7 @@ public class InstanceDiscoveryServletHandler extends JettyHandler {
     private static final String OS_INFO = "oi";
 
     public InstanceDiscoveryServletHandler(ModuleManager moduleManager) {
-        this.instanceIDService = new InstanceIDService(moduleManager);
+        this.instanceIDService = moduleManager.find(AgentStreamModule.NAME).getService(IInstanceIDService.class);
     }
 
     @Override public String pathSpec() {

apm-collector/apm-collector-agent-jetty/collector-agent-jetty-provider/src/main/java/org/skywalking/apm/collector/agent/jetty/handler/ServiceNameDiscoveryServiceHandler.java

@@ -24,7 +24,8 @@ import com.google.gson.JsonElement;
 import com.google.gson.JsonObject;
 import java.io.IOException;
 import javax.servlet.http.HttpServletRequest;
-import org.skywalking.apm.collector.agent.stream.worker.register.ServiceNameService;
+import org.skywalking.apm.collector.agent.stream.AgentStreamModule;
+import org.skywalking.apm.collector.agent.stream.service.register.IServiceNameService;
 import org.skywalking.apm.collector.core.module.ModuleManager;
 import org.skywalking.apm.collector.server.jetty.ArgumentsParseException;
 import org.skywalking.apm.collector.server.jetty.JettyHandler;
@@ -38,8 +39,8 @@ public class ServiceNameDiscoveryServiceHandler extends JettyHandler {
 
     private final Logger logger = LoggerFactory.getLogger(ServiceNameDiscoveryServiceHandler.class);
 
-    private final ServiceNameService serviceNameService;
-    private Gson gson = new Gson();
+    private final IServiceNameService serviceNameService;
+    private final Gson gson = new Gson();
 
     private static final String APPLICATION_ID = "ai";
     private static final String SERVICE_NAME = "sn";
@@ -47,7 +48,7 @@ public class ServiceNameDiscoveryServiceHandler extends JettyHandler {
     private static final String ELEMENT = "el";
 
     public ServiceNameDiscoveryServiceHandler(ModuleManager moduleManager) {
-        this.serviceNameService = new ServiceNameService(moduleManager);
+        this.serviceNameService = moduleManager.find(AgentStreamModule.NAME).getService(IServiceNameService.class);
     }
 
     @Override public String pathSpec() {

apm-collector/apm-collector-agent-jetty/collector-agent-jetty-provider/src/main/java/org/skywalking/apm/collector/agent/jetty/handler/TraceSegmentServletHandler.java

@@ -25,7 +25,8 @@ import java.io.IOException;
 import javax.servlet.http.HttpServletRequest;
 import org.skywalking.apm.collector.agent.jetty.handler.reader.TraceSegment;
 import org.skywalking.apm.collector.agent.jetty.handler.reader.TraceSegmentJsonReader;
-import org.skywalking.apm.collector.agent.stream.parser.SegmentParse;
+import org.skywalking.apm.collector.agent.stream.AgentStreamModule;
+import org.skywalking.apm.collector.agent.stream.service.trace.ITraceSegmentService;
 import org.skywalking.apm.collector.core.module.ModuleManager;
 import org.skywalking.apm.collector.server.jetty.ArgumentsParseException;
 import org.skywalking.apm.collector.server.jetty.JettyHandler;
@@ -39,10 +40,10 @@ public class TraceSegmentServletHandler extends JettyHandler {
 
     private final Logger logger = LoggerFactory.getLogger(TraceSegmentServletHandler.class);
 
-    private final ModuleManager moduleManager;
+    private final ITraceSegmentService traceSegmentService;
 
     public TraceSegmentServletHandler(ModuleManager moduleManager) {
-        this.moduleManager = moduleManager;
+        this.traceSegmentService = moduleManager.find(AgentStreamModule.NAME).getService(ITraceSegmentService.class);
     }
 
     @Override public String pathSpec() {
@@ -71,9 +72,8 @@ public class TraceSegmentServletHandler extends JettyHandler {
 
         reader.beginArray();
         while (reader.hasNext()) {
-            SegmentParse segmentParse = new SegmentParse(moduleManager);
             TraceSegment traceSegment = jsonReader.read(reader);
-            segmentParse.parse(traceSegment.getUpstreamSegment(), SegmentParse.Source.Agent);
+            traceSegmentService.send(traceSegment.getUpstreamSegment());
         }
         reader.endArray();
     }

apm-collector/apm-collector-agent-jetty/collector-agent-jetty-provider/src/main/java/org/skywalking/apm/collector/agent/jetty/handler/naming/AgentJettyNamingListener.java

@@ -18,7 +18,7 @@
 
 package org.skywalking.apm.collector.agent.jetty.handler.naming;
 
-import org.skywalking.apm.collector.agent.AgentModule;
+import org.skywalking.apm.collector.agent.jetty.AgentJettyModule;
 import org.skywalking.apm.collector.agent.jetty.AgentModuleJettyProvider;
 import org.skywalking.apm.collector.cluster.ClusterModuleListener;
 
@@ -27,7 +27,7 @@ import org.skywalking.apm.collector.cluster.ClusterModuleListener;
  */
 public class AgentJettyNamingListener extends ClusterModuleListener {
 
-    public static final String PATH = "/" + AgentModule.NAME + "/" + AgentModuleJettyProvider.NAME;
+    public static final String PATH = "/" + AgentJettyModule.NAME + "/" + AgentModuleJettyProvider.NAME;
 
     @Override public String path() {
         return PATH;

apm-collector/apm-collector-agent-jetty/pom.xml

@@ -0,0 +1,44 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Copyright 2017, OpenSkywalking Organization All rights reserved.
+  ~
+  ~ 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 repository: https://github.com/OpenSkywalking/skywalking
+  -->
+
+<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>
+        <artifactId>apm-collector</artifactId>
+        <groupId>org.skywalking</groupId>
+        <version>3.2.5-2017</version>
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
+
+    <artifactId>apm-collector-agent-jetty</artifactId>
+    <packaging>pom</packaging>
+    <modules>
+        <module>collector-agent-jetty-define</module>
+        <module>collector-agent-jetty-provider</module>
+    </modules>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.skywalking</groupId>
+            <artifactId>apm-collector-core</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+    </dependencies>
+</project>

apm-collector/apm-collector-agent-stream/collector-agent-stream-define/pom.xml

@@ -21,20 +21,20 @@
          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>
-        <artifactId>apm-collector-stream</artifactId>
+        <artifactId>apm-collector-agent-stream</artifactId>
         <groupId>org.skywalking</groupId>
         <version>3.2.5-2017</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
-    <artifactId>collector-stream-provider</artifactId>
+    <artifactId>collector-agent-stream-define</artifactId>
     <packaging>jar</packaging>
 
     <dependencies>
         <dependency>
             <groupId>org.skywalking</groupId>
-            <artifactId>collector-stream-define</artifactId>
+            <artifactId>apm-network</artifactId>
             <version>${project.version}</version>
         </dependency>
     </dependencies>
-</project>
+</project>

apm-collector/apm-collector-agent-stream/collector-agent-stream-define/src/main/java/org/skywalking/apm/collector/agent/stream/AgentStreamModule.java

@@ -0,0 +1,68 @@
+/*
+ * Copyright 2017, OpenSkywalking Organization All rights reserved.
+ *
+ * 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 repository: https://github.com/OpenSkywalking/skywalking
+ */
+
+package org.skywalking.apm.collector.agent.stream;
+
+import java.util.ArrayList;
+import java.util.List;
+import org.skywalking.apm.collector.agent.stream.service.jvm.ICpuMetricService;
+import org.skywalking.apm.collector.agent.stream.service.jvm.IGCMetricService;
+import org.skywalking.apm.collector.agent.stream.service.jvm.IInstanceHeartBeatService;
+import org.skywalking.apm.collector.agent.stream.service.jvm.IMemoryMetricService;
+import org.skywalking.apm.collector.agent.stream.service.jvm.IMemoryPoolMetricService;
+import org.skywalking.apm.collector.agent.stream.service.register.IApplicationIDService;
+import org.skywalking.apm.collector.agent.stream.service.register.IInstanceIDService;
+import org.skywalking.apm.collector.agent.stream.service.register.IServiceNameService;
+import org.skywalking.apm.collector.agent.stream.service.trace.ITraceSegmentService;
+import org.skywalking.apm.collector.core.module.Module;
+
+/**
+ * @author peng-yongsheng
+ */
+public class AgentStreamModule extends Module {
+
+    public static final String NAME = "agent_stream";
+
+    @Override public String name() {
+        return NAME;
+    }
+
+    @Override public Class[] services() {
+        List<Class> classes = new ArrayList<>();
+
+        addRegisterService(classes);
+        addJVMService(classes);
+        classes.add(ITraceSegmentService.class);
+
+        return classes.toArray(new Class[] {});
+    }
+
+    private void addRegisterService(List<Class> classes) {
+        classes.add(IApplicationIDService.class);
+        classes.add(IInstanceIDService.class);
+        classes.add(IServiceNameService.class);
+    }
+
+    private void addJVMService(List<Class> classes) {
+        classes.add(ICpuMetricService.class);
+        classes.add(IGCMetricService.class);
+        classes.add(IMemoryMetricService.class);
+        classes.add(IMemoryPoolMetricService.class);
+        classes.add(IInstanceHeartBeatService.class);
+    }
+}

apm-collector/apm-collector-agent-stream/collector-agent-stream-define/src/main/java/org/skywalking/apm/collector/agent/stream/service/jvm/ICpuMetricService.java

@@ -0,0 +1,28 @@
+/*
+ * Copyright 2017, OpenSkywalking Organization All rights reserved.
+ *
+ * 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 repository: https://github.com/OpenSkywalking/skywalking
+ */
+
+package org.skywalking.apm.collector.agent.stream.service.jvm;
+
+import org.skywalking.apm.collector.core.module.Service;
+
+/**
+ * @author peng-yongsheng
+ */
+public interface ICpuMetricService extends Service {
+    void send(int instanceId, long timeBucket, double usagePercent);
+}

apm-collector/apm-collector-agent-stream/collector-agent-stream-define/src/main/java/org/skywalking/apm/collector/agent/stream/service/jvm/IGCMetricService.java

@@ -0,0 +1,28 @@
+/*
+ * Copyright 2017, OpenSkywalking Organization All rights reserved.
+ *
+ * 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 repository: https://github.com/OpenSkywalking/skywalking
+ */
+
+package org.skywalking.apm.collector.agent.stream.service.jvm;
+
+import org.skywalking.apm.collector.core.module.Service;
+
+/**
+ * @author peng-yongsheng
+ */
+public interface IGCMetricService extends Service {
+    void send(int instanceId, long timeBucket, int phraseValue, long count, long time);
+}

apm-collector/apm-collector-agent-stream/collector-agent-stream-define/src/main/java/org/skywalking/apm/collector/agent/stream/service/jvm/IInstanceHeartBeatService.java

@@ -0,0 +1,28 @@
+/*
+ * Copyright 2017, OpenSkywalking Organization All rights reserved.
+ *
+ * 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 repository: https://github.com/OpenSkywalking/skywalking
+ */
+
+package org.skywalking.apm.collector.agent.stream.service.jvm;
+
+import org.skywalking.apm.collector.core.module.Service;
+
+/**
+ * @author peng-yongsheng
+ */
+public interface IInstanceHeartBeatService extends Service {
+    void send(int instanceId, long heartBeatTime);
+}

apm-collector/apm-collector-agent-stream/collector-agent-stream-define/src/main/java/org/skywalking/apm/collector/agent/stream/service/jvm/IMemoryMetricService.java

@@ -0,0 +1,28 @@
+/*
+ * Copyright 2017, OpenSkywalking Organization All rights reserved.
+ *
+ * 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 repository: https://github.com/OpenSkywalking/skywalking
+ */
+
+package org.skywalking.apm.collector.agent.stream.service.jvm;
+
+import org.skywalking.apm.collector.core.module.Service;
+
+/**
+ * @author peng-yongsheng
+ */
+public interface IMemoryMetricService extends Service {
+    void send(int instanceId, long timeBucket, boolean isHeap, long init, long max, long used, long commited);
+}

apm-collector/apm-collector-agent-stream/collector-agent-stream-define/src/main/java/org/skywalking/apm/collector/agent/stream/service/jvm/IMemoryPoolMetricService.java

@@ -0,0 +1,28 @@
+/*
+ * Copyright 2017, OpenSkywalking Organization All rights reserved.
+ *
+ * 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 repository: https://github.com/OpenSkywalking/skywalking
+ */
+
+package org.skywalking.apm.collector.agent.stream.service.jvm;
+
+import org.skywalking.apm.collector.core.module.Service;
+
+/**
+ * @author peng-yongsheng
+ */
+public interface IMemoryPoolMetricService extends Service {
+    void send(int instanceId, long timeBucket, int poolType, long init, long max, long used, long commited);
+}

apm-collector/apm-collector-agent-stream/collector-agent-stream-define/src/main/java/org/skywalking/apm/collector/agent/stream/service/register/IApplicationIDService.java

@@ -16,12 +16,13 @@
  * Project repository: https://github.com/OpenSkywalking/skywalking
  */
 
-package org.skywalking.apm.collector.agent.stream.buffer;
+package org.skywalking.apm.collector.agent.stream.service.register;
+
+import org.skywalking.apm.collector.core.module.Service;
 
 /**
  * @author peng-yongsheng
  */
-public class BufferFileConfig {
-    public static int BUFFER_OFFSET_MAX_FILE_SIZE = 10 * 1024 * 1024;
-    public static int BUFFER_SEGMENT_MAX_FILE_SIZE = 10 * 1024 * 1024;
+public interface IApplicationIDService extends Service {
+    int getOrCreate(String applicationCode);
 }

apm-collector/apm-collector-agent-stream/collector-agent-stream-define/src/main/java/org/skywalking/apm/collector/agent/stream/service/register/IInstanceIDService.java

@@ -0,0 +1,30 @@
+/*
+ * Copyright 2017, OpenSkywalking Organization All rights reserved.
+ *
+ * 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 repository: https://github.com/OpenSkywalking/skywalking
+ */
+
+package org.skywalking.apm.collector.agent.stream.service.register;
+
+import org.skywalking.apm.collector.core.module.Service;
+
+/**
+ * @author peng-yongsheng
+ */
+public interface IInstanceIDService extends Service {
+    int getOrCreate(int applicationId, String agentUUID, long registerTime, String osInfo);
+
+    void recover(int instanceId, int applicationId, long registerTime, String osInfo);
+}

apm-collector/apm-collector-agent-stream/collector-agent-stream-define/src/main/java/org/skywalking/apm/collector/agent/stream/service/register/IServiceNameService.java

@@ -0,0 +1,28 @@
+/*
+ * Copyright 2017, OpenSkywalking Organization All rights reserved.
+ *
+ * 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 repository: https://github.com/OpenSkywalking/skywalking
+ */
+
+package org.skywalking.apm.collector.agent.stream.service.register;
+
+import org.skywalking.apm.collector.core.module.Service;
+
+/**
+ * @author peng-yongsheng
+ */
+public interface IServiceNameService extends Service {
+    int getOrCreate(int applicationId, String serviceName);
+}

apm-collector/apm-collector-agent-stream/collector-agent-stream-define/src/main/java/org/skywalking/apm/collector/agent/stream/service/trace/ITraceSegmentService.java

@@ -0,0 +1,29 @@
+/*
+ * Copyright 2017, OpenSkywalking Organization All rights reserved.
+ *
+ * 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 repository: https://github.com/OpenSkywalking/skywalking
+ */
+
+package org.skywalking.apm.collector.agent.stream.service.trace;
+
+import org.skywalking.apm.collector.core.module.Service;
+import org.skywalking.apm.network.proto.UpstreamSegment;
+
+/**
+ * @author peng-yongsheng
+ */
+public interface ITraceSegmentService extends Service {
+    void send(UpstreamSegment segment);
+}

apm-collector/apm-collector-agent-stream/collector-agent-stream-define/src/main/resources/META-INF/services/org.skywalking.apm.collector.core.module.Module

@@ -0,0 +1,19 @@
+#
+# Copyright 2017, OpenSkywalking Organization All rights reserved.
+#
+# 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 repository: https://github.com/OpenSkywalking/skywalking
+#
+
+org.skywalking.apm.collector.agent.stream.AgentStreamModule

apm-collector/apm-collector-agent-stream/collector-agent-stream-provider/pom.xml

@@ -21,30 +21,35 @@
          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>
-        <artifactId>apm-collector-agent</artifactId>
+        <artifactId>apm-collector-agent-stream</artifactId>
         <groupId>org.skywalking</groupId>
         <version>3.2.5-2017</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
-    <artifactId>collector-agent-grpc-provider</artifactId>
+    <artifactId>collector-agent-stream-provider</artifactId>
     <packaging>jar</packaging>
 
     <dependencies>
         <dependency>
             <groupId>org.skywalking</groupId>
-            <artifactId>collector-agent-define</artifactId>
+            <artifactId>collector-agent-stream-define</artifactId>
             <version>${project.version}</version>
         </dependency>
         <dependency>
             <groupId>org.skywalking</groupId>
-            <artifactId>collector-agent-stream</artifactId>
+            <artifactId>collector-storage-define</artifactId>
             <version>${project.version}</version>
         </dependency>
         <dependency>
             <groupId>org.skywalking</groupId>
-            <artifactId>collector-grpc-manager-define</artifactId>
+            <artifactId>collector-cache-define</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.skywalking</groupId>
+            <artifactId>apm-collector-stream</artifactId>
             <version>${project.version}</version>
         </dependency>
     </dependencies>
-</project>
+</project>

apm-collector/apm-collector-agent-stream/collector-agent-stream-provider/src/main/java/org/skywalking/apm/collector/agent/stream/AgentStreamBootStartup.java

@@ -22,34 +22,23 @@ import org.skywalking.apm.collector.agent.stream.graph.JvmMetricStreamGraph;
 import org.skywalking.apm.collector.agent.stream.graph.RegisterStreamGraph;
 import org.skywalking.apm.collector.agent.stream.graph.TraceStreamGraph;
 import org.skywalking.apm.collector.core.module.ModuleManager;
-import org.skywalking.apm.collector.core.util.ObjectUtils;
 import org.skywalking.apm.collector.stream.timer.PersistenceTimer;
 import org.skywalking.apm.collector.stream.worker.base.WorkerCreateListener;
 
 /**
  * @author peng-yongsheng
  */
-public class AgentStreamSingleton {
-
-    private static AgentStreamSingleton INSTANCE;
+public class AgentStreamBootStartup {
 
     private final ModuleManager moduleManager;
     private final WorkerCreateListener workerCreateListener;
 
-    private AgentStreamSingleton(ModuleManager moduleManager) {
+    public AgentStreamBootStartup(ModuleManager moduleManager) {
         this.moduleManager = moduleManager;
         this.workerCreateListener = new WorkerCreateListener();
-        this.create();
     }
 
-    public static synchronized AgentStreamSingleton createInstanceIfAbsent(ModuleManager moduleManager) {
-        if (ObjectUtils.isEmpty(INSTANCE)) {
-            INSTANCE = new AgentStreamSingleton(moduleManager);
-        }
-        return INSTANCE;
-    }
-
-    private void create() {
+    public void start() {
         createJVMGraph();
         createRegisterGraph();
         createTraceGraph();

apm-collector/apm-collector-agent-stream/collector-agent-stream-provider/src/main/java/org/skywalking/apm/collector/agent/stream/AgentStreamModuleProvider.java

@@ -0,0 +1,89 @@
+/*
+ * Copyright 2017, OpenSkywalking Organization All rights reserved.
+ *
+ * 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 repository: https://github.com/OpenSkywalking/skywalking
+ */
+
+package org.skywalking.apm.collector.agent.stream;
+
+import java.util.Properties;
+import org.skywalking.apm.collector.agent.stream.buffer.BufferFileConfig;
+import org.skywalking.apm.collector.agent.stream.service.jvm.ICpuMetricService;
+import org.skywalking.apm.collector.agent.stream.service.jvm.IGCMetricService;
+import org.skywalking.apm.collector.agent.stream.service.jvm.IInstanceHeartBeatService;
+import org.skywalking.apm.collector.agent.stream.service.jvm.IMemoryMetricService;
+import org.skywalking.apm.collector.agent.stream.service.jvm.IMemoryPoolMetricService;
+import org.skywalking.apm.collector.agent.stream.service.register.IApplicationIDService;
+import org.skywalking.apm.collector.agent.stream.service.register.IInstanceIDService;
+import org.skywalking.apm.collector.agent.stream.service.register.IServiceNameService;
+import org.skywalking.apm.collector.agent.stream.service.trace.ITraceSegmentService;
+import org.skywalking.apm.collector.agent.stream.worker.jvm.CpuMetricService;
+import org.skywalking.apm.collector.agent.stream.worker.jvm.GCMetricService;
+import org.skywalking.apm.collector.agent.stream.worker.jvm.InstanceHeartBeatService;
+import org.skywalking.apm.collector.agent.stream.worker.jvm.MemoryMetricService;
+import org.skywalking.apm.collector.agent.stream.worker.jvm.MemoryPoolMetricService;
+import org.skywalking.apm.collector.agent.stream.worker.register.ApplicationIDService;
+import org.skywalking.apm.collector.agent.stream.worker.register.InstanceIDService;
+import org.skywalking.apm.collector.agent.stream.worker.register.ServiceNameService;
+import org.skywalking.apm.collector.agent.stream.worker.trace.TraceSegmentService;
+import org.skywalking.apm.collector.cache.CacheModule;
+import org.skywalking.apm.collector.core.module.Module;
+import org.skywalking.apm.collector.core.module.ModuleProvider;
+import org.skywalking.apm.collector.core.module.ServiceNotProvidedException;
+import org.skywalking.apm.collector.storage.StorageModule;
+
+/**
+ * @author peng-yongsheng
+ */
+public class AgentStreamModuleProvider extends ModuleProvider {
+
+    @Override public String name() {
+        return "default";
+    }
+
+    @Override public Class<? extends Module> module() {
+        return AgentStreamModule.class;
+    }
+
+    @Override public void prepare(Properties config) throws ServiceNotProvidedException {
+        this.registerServiceImplementation(IApplicationIDService.class, new ApplicationIDService(getManager()));
+        this.registerServiceImplementation(IInstanceIDService.class, new InstanceIDService(getManager()));
+        this.registerServiceImplementation(IServiceNameService.class, new ServiceNameService(getManager()));
+
+        this.registerServiceImplementation(ICpuMetricService.class, new CpuMetricService());
+        this.registerServiceImplementation(IGCMetricService.class, new GCMetricService());
+        this.registerServiceImplementation(IMemoryMetricService.class, new MemoryMetricService());
+        this.registerServiceImplementation(IMemoryPoolMetricService.class, new MemoryPoolMetricService());
+        this.registerServiceImplementation(IInstanceHeartBeatService.class, new InstanceHeartBeatService());
+
+        this.registerServiceImplementation(ITraceSegmentService.class, new TraceSegmentService(getManager()));
+
+        BufferFileConfig.Parser parser = new BufferFileConfig.Parser();
+        parser.parse(config);
+    }
+
+    @Override public void start(Properties config) throws ServiceNotProvidedException {
+        AgentStreamBootStartup bootStartup = new AgentStreamBootStartup(getManager());
+        bootStartup.start();
+    }
+
+    @Override public void notifyAfterCompleted() throws ServiceNotProvidedException {
+
+    }
+
+    @Override public String[] requiredModules() {
+        return new String[] {StorageModule.NAME, CacheModule.NAME};
+    }
+}

apm-collector/apm-collector-agent-stream/collector-agent-stream-provider/src/main/java/org/skywalking/apm/collector/agent/stream/buffer/BufferFileConfig.java

@@ -0,0 +1,79 @@
+/*
+ * Copyright 2017, OpenSkywalking Organization All rights reserved.
+ *
+ * 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 repository: https://github.com/OpenSkywalking/skywalking
+ */
+
+package org.skywalking.apm.collector.agent.stream.buffer;
+
+import java.util.Properties;
+
+/**
+ * @author peng-yongsheng
+ */
+public class BufferFileConfig {
+    static int BUFFER_OFFSET_MAX_FILE_SIZE = 10 * 1024 * 1024;
+    static int BUFFER_SEGMENT_MAX_FILE_SIZE = 10 * 1024 * 1024;
+
+    private static final String BUFFER_OFFSET_MAX_FILE_SIZE_KEY = "buffer_offset_max_file_size";
+    private static final String BUFFER_SEGMENT_MAX_FILE_SIZE_KEY = "buffer_segment_max_file_size";
+
+    public static class Parser {
+
+        public void parse(Properties config) {
+            if (config.containsKey(BUFFER_OFFSET_MAX_FILE_SIZE_KEY)) {
+                String sizeStr = config.getProperty(BUFFER_OFFSET_MAX_FILE_SIZE_KEY).toUpperCase();
+                if (sizeStr.endsWith("K")) {
+                    int size = Integer.parseInt(sizeStr.replace("K", ""));
+                    BUFFER_OFFSET_MAX_FILE_SIZE = size * 1024;
+                } else if (sizeStr.endsWith("KB")) {
+                    int size = Integer.parseInt(sizeStr.replace("KB", ""));
+                    BUFFER_OFFSET_MAX_FILE_SIZE = size * 1024;
+                } else if (sizeStr.endsWith("M")) {
+                    int size = Integer.parseInt(sizeStr.replace("M", ""));
+                    BUFFER_OFFSET_MAX_FILE_SIZE = size * 1024 * 1024;
+                } else if (sizeStr.endsWith("MB")) {
+                    int size = Integer.parseInt(sizeStr.replace("MB", ""));
+                    BUFFER_OFFSET_MAX_FILE_SIZE = size * 1024 * 1024;
+                } else {
+                    BUFFER_OFFSET_MAX_FILE_SIZE = 10 * 1024 * 1024;
+                }
+            } else {
+                BUFFER_OFFSET_MAX_FILE_SIZE = 10 * 1024 * 1024;
+            }
+
+            if (config.containsKey(BUFFER_SEGMENT_MAX_FILE_SIZE_KEY)) {
+                String sizeStr = config.getProperty(BUFFER_SEGMENT_MAX_FILE_SIZE_KEY).toUpperCase();
+                if (sizeStr.endsWith("K")) {
+                    int size = Integer.parseInt(sizeStr.replace("K", ""));
+                    BUFFER_SEGMENT_MAX_FILE_SIZE = size * 1024;
+                } else if (sizeStr.endsWith("KB")) {
+                    int size = Integer.parseInt(sizeStr.replace("KB", ""));
+                    BUFFER_SEGMENT_MAX_FILE_SIZE = size * 1024;
+                } else if (sizeStr.endsWith("M")) {
+                    int size = Integer.parseInt(sizeStr.replace("M", ""));
+                    BUFFER_SEGMENT_MAX_FILE_SIZE = size * 1024 * 1024;
+                } else if (sizeStr.endsWith("MB")) {
+                    int size = Integer.parseInt(sizeStr.replace("MB", ""));
+                    BUFFER_SEGMENT_MAX_FILE_SIZE = size * 1024 * 1024;
+                } else {
+                    BUFFER_SEGMENT_MAX_FILE_SIZE = 1024 * 1024;
+                }
+            } else {
+                BUFFER_SEGMENT_MAX_FILE_SIZE = 1024 * 1024;
+            }
+        }
+    }
+}

apm-collector/apm-collector-agent-stream/collector-agent-stream-provider/src/main/java/org/skywalking/apm/collector/agent/stream/buffer/OffsetManager.java

@@ -70,7 +70,7 @@ public enum OffsetManager {
             offset.deserialize(offsetRecord);
             initialized = true;
 
-            Executors.newSingleThreadScheduledExecutor().scheduleAtFixedRate(() -> flush(), 10, 3, TimeUnit.SECONDS);
+            Executors.newSingleThreadScheduledExecutor().scheduleAtFixedRate(this::flush, 10, 3, TimeUnit.SECONDS);
         }
     }
 

apm-collector/apm-collector-agent-stream/collector-agent-stream-provider/src/main/java/org/skywalking/apm/collector/agent/stream/worker/jvm/CpuMetricService.java

@@ -0,0 +1,52 @@
+/*
+ * Copyright 2017, OpenSkywalking Organization All rights reserved.
+ *
+ * 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 repository: https://github.com/OpenSkywalking/skywalking
+ */
+
+package org.skywalking.apm.collector.agent.stream.worker.jvm;
+
+import org.skywalking.apm.collector.agent.stream.graph.JvmMetricStreamGraph;
+import org.skywalking.apm.collector.agent.stream.service.jvm.ICpuMetricService;
+import org.skywalking.apm.collector.core.graph.Graph;
+import org.skywalking.apm.collector.core.graph.GraphManager;
+import org.skywalking.apm.collector.core.util.Const;
+import org.skywalking.apm.collector.storage.table.jvm.CpuMetric;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * @author peng-yongsheng
+ */
+public class CpuMetricService implements ICpuMetricService {
+
+    private final Logger logger = LoggerFactory.getLogger(CpuMetricService.class);
+
+    private final Graph<CpuMetric> cpuMetricGraph;
+
+    public CpuMetricService() {
+        cpuMetricGraph = GraphManager.INSTANCE.createIfAbsent(JvmMetricStreamGraph.CPU_METRIC_GRAPH_ID, CpuMetric.class);
+    }
+
+    @Override public void send(int instanceId, long timeBucket, double usagePercent) {
+        CpuMetric cpuMetric = new CpuMetric(timeBucket + Const.ID_SPLIT + instanceId);
+        cpuMetric.setInstanceId(instanceId);
+        cpuMetric.setUsagePercent(usagePercent);
+        cpuMetric.setTimeBucket(timeBucket);
+
+        logger.debug("send to cpu metric graph, id: {}", cpuMetric.getId());
+        cpuMetricGraph.start(cpuMetric);
+    }
+}

apm-collector/apm-collector-agent-stream/collector-agent-stream-provider/src/main/java/org/skywalking/apm/collector/agent/stream/worker/jvm/GCMetricService.java

@@ -0,0 +1,54 @@
+/*
+ * Copyright 2017, OpenSkywalking Organization All rights reserved.
+ *
+ * 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 repository: https://github.com/OpenSkywalking/skywalking
+ */
+
+package org.skywalking.apm.collector.agent.stream.worker.jvm;
+
+import org.skywalking.apm.collector.agent.stream.graph.JvmMetricStreamGraph;
+import org.skywalking.apm.collector.agent.stream.service.jvm.IGCMetricService;
+import org.skywalking.apm.collector.core.graph.Graph;
+import org.skywalking.apm.collector.core.graph.GraphManager;
+import org.skywalking.apm.collector.core.util.Const;
+import org.skywalking.apm.collector.storage.table.jvm.GCMetric;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * @author peng-yongsheng
+ */
+public class GCMetricService implements IGCMetricService {
+
+    private final Logger logger = LoggerFactory.getLogger(GCMetricService.class);
+
+    private final Graph<GCMetric> gcMetricGraph;
+
+    public GCMetricService() {
+        gcMetricGraph = GraphManager.INSTANCE.createIfAbsent(JvmMetricStreamGraph.GC_METRIC_GRAPH_ID, GCMetric.class);
+    }
+
+    @Override public void send(int instanceId, long timeBucket, int phraseValue, long count, long time) {
+        GCMetric gcMetric = new GCMetric(timeBucket + Const.ID_SPLIT + instanceId + Const.ID_SPLIT + String.valueOf(phraseValue));
+        gcMetric.setInstanceId(instanceId);
+        gcMetric.setPhrase(phraseValue);
+        gcMetric.setCount(count);
+        gcMetric.setTime(time);
+        gcMetric.setTimeBucket(timeBucket);
+
+        logger.debug("send to gc metric graph, id: {}", gcMetric.getId());
+        gcMetricGraph.start(gcMetric);
+    }
+}