Throw UnexpectedException when invoke deserialize or serialize method in...

Throw UnexpectedException when invoke deserialize or serialize method in GC,CPU,MEMORY,MEMORY POOL data define.

apm-collector/apm-collector-agentjvm/src/main/java/org/skywalking/apm/collector/agentjvm/worker/cpu/define/CpuMetricDataDefine.java

 package org.skywalking.apm.collector.agentjvm.worker.cpu.define;
 
+import org.skywalking.apm.collector.core.framework.UnexpectedException;
 import org.skywalking.apm.collector.remote.grpc.proto.RemoteData;
 import org.skywalking.apm.collector.stream.worker.impl.data.Attribute;
 import org.skywalking.apm.collector.stream.worker.impl.data.AttributeType;
@@ -26,11 +27,11 @@ public class CpuMetricDataDefine extends DataDefine {
     }
 
     @Override public Object deserialize(RemoteData remoteData) {
-        return null;
+        throw new UnexpectedException("cpu metric data did not need send to remote worker.");
     }
 
     @Override public RemoteData serialize(Object object) {
-        return null;
+        throw new UnexpectedException("cpu metric data did not need send to remote worker.");
     }
 
     public static class CpuMetric implements Transform<CpuMetric> {

apm-collector/apm-collector-agentjvm/src/main/java/org/skywalking/apm/collector/agentjvm/worker/gc/define/GCMetricDataDefine.java

 package org.skywalking.apm.collector.agentjvm.worker.gc.define;
 
+import org.skywalking.apm.collector.core.framework.UnexpectedException;
 import org.skywalking.apm.collector.remote.grpc.proto.RemoteData;
 import org.skywalking.apm.collector.stream.worker.impl.data.Attribute;
 import org.skywalking.apm.collector.stream.worker.impl.data.AttributeType;
@@ -28,11 +29,11 @@ public class GCMetricDataDefine extends DataDefine {
     }
 
     @Override public Object deserialize(RemoteData remoteData) {
-        return null;
+        throw new UnexpectedException("gc metric data did not need send to remote worker.");
     }
 
     @Override public RemoteData serialize(Object object) {
-        return null;
+        throw new UnexpectedException("gc metric data did not need send to remote worker.");
     }
 
     public static class GCMetric implements Transform<GCMetric> {

apm-collector/apm-collector-agentjvm/src/main/java/org/skywalking/apm/collector/agentjvm/worker/memory/define/MemoryMetricDataDefine.java

 package org.skywalking.apm.collector.agentjvm.worker.memory.define;
 
+import org.skywalking.apm.collector.core.framework.UnexpectedException;
 import org.skywalking.apm.collector.remote.grpc.proto.RemoteData;
 import org.skywalking.apm.collector.stream.worker.impl.data.Attribute;
 import org.skywalking.apm.collector.stream.worker.impl.data.AttributeType;
@@ -30,11 +31,11 @@ public class MemoryMetricDataDefine extends DataDefine {
     }
 
     @Override public Object deserialize(RemoteData remoteData) {
-        return null;
+        throw new UnexpectedException("memory metric data did not need send to remote worker.");
     }
 
     @Override public RemoteData serialize(Object object) {
-        return null;
+        throw new UnexpectedException("memory metric data did not need send to remote worker.");
     }
 
     public static class MemoryMetric implements Transform<MemoryMetric> {

apm-collector/apm-collector-agentjvm/src/main/java/org/skywalking/apm/collector/agentjvm/worker/memorypool/define/MemoryPoolMetricDataDefine.java

 package org.skywalking.apm.collector.agentjvm.worker.memorypool.define;
 
+import org.skywalking.apm.collector.core.framework.UnexpectedException;
 import org.skywalking.apm.collector.remote.grpc.proto.RemoteData;
 import org.skywalking.apm.collector.stream.worker.impl.data.Attribute;
 import org.skywalking.apm.collector.stream.worker.impl.data.AttributeType;
@@ -31,11 +32,11 @@ public class MemoryPoolMetricDataDefine extends DataDefine {
     }
 
     @Override public Object deserialize(RemoteData remoteData) {
-        return null;
+        throw new UnexpectedException("memory pool metric data did not need send to remote worker.");
     }
 
     @Override public RemoteData serialize(Object object) {
-        return null;
+        throw new UnexpectedException("memory pool metric data did not need send to remote worker.");
     }
 
     public static class MemoryPoolMetric implements Transform<MemoryPoolMetric> {

apm-collector/apm-collector-core/src/main/java/org/skywalking/apm/collector/core/framework/UnexpectedException.java

+package org.skywalking.apm.collector.core.framework;
+
+/**
+ * @author pengys5
+ */
+public class UnexpectedException extends RuntimeException {
+
+    public UnexpectedException(String message) {
+        super(message);
+    }
+}