update checkpoint for record queue (#40)

logproxy-client/src/main/java/com/oceanbase/clogproxy/client/connection/ClientHandler.java

@@ -334,6 +334,7 @@ public class ClientHandler extends ChannelInboundHandlerAdapter {
             while (true) {
                 try {
                     recordQueue.put(new StreamContext.TransferPacket(logMessage));
+                    stream.setCheckpointString(logMessage.getTimestamp());
                     break;
                 } catch (InterruptedException e) {
                     // do nothing

logproxy-client/src/main/java/com/oceanbase/clogproxy/client/connection/ClientStream.java

@@ -302,6 +302,15 @@ public class ClientStream {
         }
     }
 
+    /**
+     * Set checkpoint string.
+     *
+     * @param checkpointString Checkpoint string.
+     */
+    public void setCheckpointString(String checkpointString) {
+        this.checkpointString = checkpointString;
+    }
+
     /**
      * Add a {@link RecordListener} to {@link #listeners}.
      *