添加追加EOF标志位的线程

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

+package com.ai.cloud.skywalking.reciever.buffer;
+
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+
+import java.io.BufferedWriter;
+import java.io.File;
+import java.io.FileWriter;
+import java.io.IOException;
+
+class AppendEOFFlagThread extends Thread {
+
+    private Logger logger = LogManager.getLogger(AppendEOFFlagThread.class);
+    private File[] dataBufferFiles;
+
+    public AppendEOFFlagThread(File[] dataBufferFiles) {
+        this.dataBufferFiles = dataBufferFiles;
+    }
+
+    @Override
+    public void run() {
+        BufferedWriter bufferedWriter;
+        for (File file : dataBufferFiles) {
+            try {
+                logger.info("Add EOF flags to unprocessed data file[{}]", file.getName());
+                bufferedWriter = new BufferedWriter(new FileWriter(new File(file.getParent(), file.getName()), true));
+                bufferedWriter.write("EOF\n");
+                bufferedWriter.flush();
+                bufferedWriter.close();
+            } catch (IOException e) {
+                logger.info("Add EOF flags to the unprocessed data file failed.", e);
+            }
+        }
+    }
+}

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

@@ -5,17 +5,17 @@ import org.apache.commons.io.comparator.NameFileComparator;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 
-import java.io.BufferedWriter;
 import java.io.File;
-import java.io.FileWriter;
-import java.io.IOException;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.List;
 import java.util.concurrent.ThreadLocalRandom;
 
 import static com.ai.cloud.skywalking.reciever.conf.Config.Buffer.MAX_THREAD_NUMBER;
+import static com.ai.cloud.skywalking.reciever.conf.Config.Persistence.MAX_APPEND_EOF_FLAGS_THREAD_NUMBER;
 
 public class DataBufferThreadContainer {
+
     private static Logger logger = LogManager.getLogger(DataBufferThreadContainer.class);
     private static List<DataBufferThread> buffers = new ArrayList<DataBufferThread>();
 
@@ -34,19 +34,17 @@ public class DataBufferThreadContainer {
         File parentDir = new File(Config.Buffer.DATA_BUFFER_FILE_PARENT_DIRECTORY);
         NameFileComparator sizeComparator = new NameFileComparator();
         File[] dataFileList = sizeComparator.sort(parentDir.listFiles());
-        BufferedWriter bufferedWriter;
-        for (File file : dataFileList) {
-            try {
-                logger.info("Add EOF flags to unprocessed data file[{}]", file.getName());
-                bufferedWriter = new BufferedWriter(new FileWriter(new File(file.getParent(), file.getName()), true));
-                bufferedWriter.write("EOF\n");
-                bufferedWriter.flush();
-                bufferedWriter.close();
-            } catch (IOException e) {
-                logger.info("Add EOF flags to the unprocessed data file failed.", e);
+        int step = (int) Math.ceil(dataFileList.length * 1.0 / MAX_APPEND_EOF_FLAGS_THREAD_NUMBER);
+        int start = 0, end = 0;
+        while (true) {
+            if (end + step >= dataFileList.length) {
+                new AppendEOFFlagThread(Arrays.copyOf(dataFileList, start)).start();
+                break;
             }
+            end += step;
+            new AppendEOFFlagThread(Arrays.copyOfRange(dataFileList, start, end)).start();
+            start = end;
         }
-
         logger.info("Data buffer thread size {} begin to init ", MAX_THREAD_NUMBER);
         for (int i = 0; i < MAX_THREAD_NUMBER; i++) {
             DataBufferThread dataBufferThread = new DataBufferThread();

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

@@ -48,6 +48,9 @@ public class Config {
 
         // 处理文件完成之后，等待时间
         public static long SWITCH_FILE_WAIT_TIME = 5000L;
+
+        // 追加EOF标志位的线程数量
+        public static final int MAX_APPEND_EOF_FLAGS_THREAD_NUMBER = 11;
     }
 
     public static class RegisterPersistence {