ing

src/main/java/com/loafle/overflow/container/server/handler/RPCServerHandler.java

@@ -32,6 +32,8 @@ public class RPCServerHandler extends SimpleChannelInboundHandler<SocketFrame> {
   @Qualifier(Container.RPC_INVOKER)
   private RPCInvoker rpcInvoker;
 
+  private ChannelHandlerContext ctx;
+
   public RPCServerHandler() {
   }
 
@@ -64,4 +66,44 @@ public class RPCServerHandler extends SimpleChannelInboundHandler<SocketFrame> {
       throw new UnsupportedOperationException(String.format("unsupported frame type: %s", frame.getClass().getName()));
     }
   }
+
+  public void send(String method, Object... params) {
+    if (null == this.ctx || !this.ctx.channel().isOpen()) {
+      logger.warn("ChannelHandlerContext is not valid");
+      return;
+    }
+    try {
+      byte[] notificationBytes = this.serverCodec.notification(method, params);
+      this.ctx.channel().writeAndFlush(notificationBytes);
+    } catch (RPCException e) {
+      logger.error("cannot create notification", e);
+    }
+  }
+
+  @Override
+  public void channelRegistered(ChannelHandlerContext ctx) throws Exception {
+    // Initialize early if channel is active already.
+    if (ctx.channel().isActive()) {
+      this.ctx = ctx;
+    }
+    super.channelRegistered(ctx);
+  }
+
+  @Override
+  public void channelActive(ChannelHandlerContext ctx) throws Exception {
+    this.ctx = ctx;
+    super.channelActive(ctx);
+  }
+
+  /**
+   * Calls {@link ChannelHandlerContext#fireChannelInactive()} to forward
+   * to the next {@link ChannelInboundHandler} in the {@link ChannelPipeline}.
+   *
+   * Sub-classes may override this method to change behavior.
+   */
+  @Override
+  public void channelInactive(ChannelHandlerContext ctx) throws Exception {
+    this.ctx = null;
+    super.channelInactive(ctx);
+  }
 }

src/main/java/com/loafle/overflow/container/service/ContainerProbeService.java

@@ -1,14 +1,19 @@
 package com.loafle.overflow.container.service;
 
+import com.loafle.overflow.container.server.handler.RPCServerHandler;
 import com.loafle.overflow.core.annotation.RPCService;
 import com.loafle.overflow.core.exception.OverflowException;
 import com.loafle.overflow.service.container.ProbeService;
 
+import org.springframework.beans.factory.annotation.Autowired;
+
 /**
  * ProbeService
  */
 @RPCService("ProbeService")
 public class ContainerProbeService implements ProbeService {
+  @Autowired()
+  private RPCServerHandler rpcServerHandler;
 
 	@Override
 	public void initService() throws Exception {
@@ -31,6 +36,6 @@ public class ContainerProbeService implements ProbeService {
 	}
 
   public void send(String method, Object... params) throws OverflowException {
-
+		this.rpcServerHandler.send(method, params);
   }
 }