1.服务端增加运行时报告，定制日志输出线程的运行情况，提高辨识度。示例如下：

---------Server Health Collector Report---------
id<SkyWalkingServer,M:null/null,P:24763,T:PersistenceThread_1(13)>
[INFO]read 3 chars from local file:1455864122412-37cd0a49fbb84ae9b111a08557cbd827(t:1455864245081)

id<SkyWalkingServer,M:null/null,P:24763,T:PersistenceThread_2(14)>
[INFO]read 3 chars from local file:1455864122406-e19d28ec360d44d2a06335511f61d7c6(t:1455864245080)

id<SkyWalkingServer,M:unknown host!/null,P:24763,T:PersistenceThread_0(12)>
[INFO]read 3 chars from local file:1455864122413-c0efe8bf31194c1887301ff3098eed00(t:1455864245080)

id<SkyWalkingServer,M:unknown host!/null,P:24763,T:PersistenceThread_3(15)>
[INFO]read 3 chars from local file:1455864122413-79b44d640a7c4f9899d599c8354b861b(t:1455864245080)

id<SkyWalkingServer,M:unknown host!/null,P:24763,T:PersistenceThread_4(16)>
[INFO]read 3 chars from local file:1455864122413-db2d14a825db4b5a93fa1a0a0e25d0c6(t:1455864245082)

id<SkyWalkingServer,M:unknown host!/null,P:24763,T:RegisterPersistenceThread(11)>
[INFO]flush memory register to file.(t:1455864250063)

------------------------------------------------

skywalking-server/src/main/java/com/ai/cloud/skywalking/reciever/CollectionServer.java

@@ -1,12 +1,11 @@
 package com.ai.cloud.skywalking.reciever;
 
-import com.ai.cloud.skywalking.reciever.buffer.DataBufferThreadContainer;
-import com.ai.cloud.skywalking.reciever.conf.Config;
-import com.ai.cloud.skywalking.reciever.conf.ConfigInitializer;
-import com.ai.cloud.skywalking.reciever.handler.CollectionServerDataHandler;
-import com.ai.cloud.skywalking.reciever.persistance.PersistenceThreadLauncher;
 import io.netty.bootstrap.ServerBootstrap;
-import io.netty.channel.*;
+import io.netty.channel.ChannelFuture;
+import io.netty.channel.ChannelInitializer;
+import io.netty.channel.ChannelOption;
+import io.netty.channel.ChannelPipeline;
+import io.netty.channel.EventLoopGroup;
 import io.netty.channel.nio.NioEventLoopGroup;
 import io.netty.channel.socket.nio.NioServerSocketChannel;
 import io.netty.handler.codec.LengthFieldBasedFrameDecoder;
@@ -15,12 +14,20 @@ import io.netty.handler.codec.bytes.ByteArrayDecoder;
 import io.netty.handler.codec.bytes.ByteArrayEncoder;
 import io.netty.handler.logging.LogLevel;
 import io.netty.handler.logging.LoggingHandler;
-import org.apache.logging.log4j.LogManager;
-import org.apache.logging.log4j.Logger;
 
 import java.io.IOException;
 import java.util.Properties;
 
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+
+import com.ai.cloud.skywalking.reciever.buffer.DataBufferThreadContainer;
+import com.ai.cloud.skywalking.reciever.conf.Config;
+import com.ai.cloud.skywalking.reciever.conf.ConfigInitializer;
+import com.ai.cloud.skywalking.reciever.handler.CollectionServerDataHandler;
+import com.ai.cloud.skywalking.reciever.persistance.PersistenceThreadLauncher;
+import com.ai.cloud.skywalking.reciever.selfexamination.ServerHealthCollector;
+
 public class CollectionServer {
 
     static Logger logger = LogManager.getLogger(CollectionServer.class);
@@ -62,6 +69,8 @@ public class CollectionServer {
     public static void main(String[] args) throws IOException, IllegalAccessException, InterruptedException {
         logger.info("To initialize the collect server configuration parameters....");
         initializeParam();
+        logger.info("To init server health collector...");
+        ServerHealthCollector.init();
         logger.info("To launch register persistence thread....");
         PersistenceThreadLauncher.doLaunch();
         logger.info("To init data buffer thread container...");

skywalking-server/src/main/java/com/ai/cloud/skywalking/reciever/conf/Config.java

@@ -72,9 +72,9 @@ public class Config {
     }
 
     public static class HBaseConfig {
-        //
+        
         public static String TABLE_NAME = "sw-call-chain";
-        //
+        
         public static String FAMILY_COLUMN_NAME = "call-chain";
 
         public static String ZK_HOSTNAME;
@@ -104,4 +104,9 @@ public class Config {
 
         public static boolean ALARM_OFF_FLAG = false;
     }
+    
+    public static class HealthCollector {
+    	// 默认健康检查上报时间
+    	public static long REPORT_INTERVAL = 5 * 60 * 1000L;
+    }
 }

skywalking-server/src/main/java/com/ai/cloud/skywalking/reciever/conf/Constants.java

@@ -1,7 +1,5 @@
 package com.ai.cloud.skywalking.reciever.conf;
 
 public class Constants {
-    public static final String HEALTH_DATA_SPILT_PATTERN = "^~";
-
     public static final String DATA_SPILT = "#&";
 }

skywalking-server/src/main/java/com/ai/cloud/skywalking/reciever/selfexamination/ServerHealthCollector.java

@@ -1,33 +1,71 @@
 package com.ai.cloud.skywalking.reciever.selfexamination;
 
-import java.util.HashMap;
+import java.util.Arrays;
 import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
 
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+
+import com.ai.cloud.skywalking.reciever.conf.Config;
 import com.ai.cloud.skywalking.reciever.util.MachineUtil;
 
-public class ServerHealthCollector extends Thread{
-	private static Map<String, ServerHeathReading> heathReadings = new HashMap<String, ServerHeathReading>();
+public class ServerHealthCollector extends Thread {
+	private Logger logger = LogManager.getLogger(ServerHealthCollector.class);
+
+	private static Map<String, ServerHeathReading> heathReadings = new ConcurrentHashMap<String, ServerHeathReading>();
+
+	private ServerHealthCollector(){
+		super("ServerHealthCollector");
+	}
 	
-	public static ServerHeathReading getCurrentHeathReading(String extraId){
+	public static void init(){
+		new ServerHealthCollector().start();
+	}
+	
+	public static ServerHeathReading getCurrentHeathReading(String extraId) {
 		String id = getId(extraId);
-		if(!heathReadings.containsKey(id)){
+		if (!heathReadings.containsKey(id)) {
 			synchronized (heathReadings) {
-				if(!heathReadings.containsKey(id)){
+				if (!heathReadings.containsKey(id)) {
 					heathReadings.put(id, new ServerHeathReading(id));
 				}
 			}
 		}
 		return heathReadings.get(id);
 	}
-	
-	private static String getId(String extraId){
-		return  "SkyWalkingServer,M:" + MachineUtil.getHostDesc() +",P:" + MachineUtil.getProcessNo() + ",T:"
+
+	private static String getId(String extraId) {
+		return "SkyWalkingServer,M:" + MachineUtil.getHostDesc() + ",P:"
+				+ MachineUtil.getProcessNo() + ",T:"
 				+ Thread.currentThread().getName() + "("
-				+ Thread.currentThread().getId() + ")" + (extraId == null? "" : ",extra:" + extraId);
+				+ Thread.currentThread().getId() + ")"
+				+ (extraId == null ? "" : ",extra:" + extraId);
 	}
-	
+
 	@Override
-	public void run(){
-		//TODO: 服务端本地存储，用于将信息存储如数据库，并供前台展现，完成定时刷新
+	public void run() {
+		while (true) {
+			try {
+				String[] keyList = heathReadings.keySet().toArray(new String[0]);
+				Arrays.sort(keyList);
+				StringBuilder log = new StringBuilder();
+				log.append("\n---------Server Health Collector Report---------\n");
+				for(String key : keyList){
+					log.append(heathReadings.get(key)).append("\n");
+				}
+				log.append("------------------------------------------------\n");
+				
+				logger.info(log);
+				
+				try {
+					Thread.sleep(Config.HealthCollector.REPORT_INTERVAL);
+				} catch (InterruptedException e) {
+					logger.warn("sleep error.", e);
+				}
+			} catch (Throwable t) {
+				logger.error("ServerHealthCollector report error.", t);
+			}
+		}
 	}
 }

skywalking-server/src/main/java/com/ai/cloud/skywalking/reciever/selfexamination/ServerHeathReading.java

@@ -3,12 +3,10 @@ package com.ai.cloud.skywalking.reciever.selfexamination;
 import java.util.HashMap;
 import java.util.Map;
 
-import com.ai.cloud.skywalking.reciever.conf.Constants;
-
 public class ServerHeathReading {
-	public static final String ERROR = "ERROR";
-	public static final String WARNING = "WARNING";
-	public static final String INFO = "INFO";
+	public static final String ERROR = "[ERROR]";
+	public static final String WARNING = "[WARNING]";
+	public static final String INFO = "[INFO]";
 	
 	private String id;
 	
@@ -32,10 +30,10 @@ public class ServerHeathReading {
 	
 	@Override
 	public String toString(){
-		StringBuilder sb = new StringBuilder(this.id);
-		sb.append(Constants.HEALTH_DATA_SPILT_PATTERN);
+		StringBuilder sb = new StringBuilder();
+		sb.append("id<").append(this.id).append(">\n");
 		for(Map.Entry<String, HeathDetailData> data : datas.entrySet()){
-			sb.append(data.getKey()).append(Constants.HEALTH_DATA_SPILT_PATTERN).append(data.getValue().toString()).append(Constants.HEALTH_DATA_SPILT_PATTERN);
+			sb.append(data.getKey()).append(data.getValue().toString()).append("\n");
 		}
 		
 		//reset data
@@ -68,7 +66,7 @@ public class ServerHeathReading {
 		
 		@Override
 		public String toString(){
-			return "d:" + data + Constants.HEALTH_DATA_SPILT_PATTERN + "t:" + statusTime;
+			return  data + "(t:" + statusTime + ")";
 		}
 	}
 }