From b1a631f8b4252e7731cd3683bf64f42f59e47463 Mon Sep 17 00:00:00 2001
From: chuzhongzai <njy1822574439@outlook.com>
Date: Tue, 20 Jan 2026 22:28:45 +0800
Subject: [PATCH] =?UTF-8?q?=E6=96=B0=E5=A2=9E=E4=B8=BB=E5=8A=A8=E9=87=8D?=
 =?UTF-8?q?=E8=BF=9E=E5=8A=9F=E8=83=BD=E4=BB=A5=E5=8F=8A=E5=AE=9A=E6=97=B6?=
 =?UTF-8?q?=E6=A3=80=E6=B5=8B=E8=BF=9E=E6=8E=A5=E6=9C=89=E6=95=88=E6=80=A7?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/main/java/lion/Message/AbstractMessage.java       |  2 ++
 .../java/lion/Message/Main/AvailableCheckMessage.java | 11 +++++++++++
 src/main/java/lion/Message/MessageCodec.java          |  1 +
 src/main/java/lion/storageNode.java                   |  5 +++++
 4 files changed, 19 insertions(+)
 create mode 100644 src/main/java/lion/Message/Main/AvailableCheckMessage.java

diff --git a/src/main/java/lion/Message/AbstractMessage.java b/src/main/java/lion/Message/AbstractMessage.java
index ff7aada..8a2633a 100644
--- a/src/main/java/lion/Message/AbstractMessage.java
+++ b/src/main/java/lion/Message/AbstractMessage.java
@@ -14,6 +14,8 @@ public class AbstractMessage {
 
     public static final byte MAINTAIN_MESSAGE = 7;
 
+    public static final byte AVAILABLE_CHECK_MESSAGE = 8;
+
     public byte messageType;
 
     public int messageId;
diff --git a/src/main/java/lion/Message/Main/AvailableCheckMessage.java b/src/main/java/lion/Message/Main/AvailableCheckMessage.java
new file mode 100644
index 0000000..60d7ada
--- /dev/null
+++ b/src/main/java/lion/Message/Main/AvailableCheckMessage.java
@@ -0,0 +1,11 @@
+package lion.Message.Main;
+
+import lion.Message.AbstractMessage;
+import lombok.Data;
+
+@Data
+public class AvailableCheckMessage extends AbstractMessage {
+    {
+        messageType = AVAILABLE_CHECK_MESSAGE;
+    }
+}
diff --git a/src/main/java/lion/Message/MessageCodec.java b/src/main/java/lion/Message/MessageCodec.java
index d61c135..7106a95 100644
--- a/src/main/java/lion/Message/MessageCodec.java
+++ b/src/main/java/lion/Message/MessageCodec.java
@@ -45,6 +45,7 @@ public class MessageCodec extends ByteToMessageCodec<AbstractMessage> {
             case AbstractMessage.DELETE_GALLERY_MESSAGE -> objectMapper.readValue(metadata, DeleteGalleryMessage.class);
             case AbstractMessage.IDENTITY_MESSAGE -> objectMapper.readValue(metadata, IdentityMessage.class);
             case AbstractMessage.MAINTAIN_MESSAGE -> objectMapper.readValue(metadata, MaintainMessage.class);
+            case AbstractMessage.AVAILABLE_CHECK_MESSAGE -> objectMapper.readValue(metadata, AvailableCheckMessage.class);
             default -> null;
         };
 
diff --git a/src/main/java/lion/storageNode.java b/src/main/java/lion/storageNode.java
index 3719c80..e051f56 100644
--- a/src/main/java/lion/storageNode.java
+++ b/src/main/java/lion/storageNode.java
@@ -177,6 +177,11 @@ public class storageNode {
                     ResponseMessage responseMessage = new ResponseMessage(deleteGalleryMessage.messageId, result);
                     ctx.writeAndFlush(responseMessage);
                 }
+                case AbstractMessage.AVAILABLE_CHECK_MESSAGE -> {
+                    AvailableCheckMessage acm = (AvailableCheckMessage) abstractMessage;
+                    ResponseMessage responseMessage = new ResponseMessage(acm.messageId, (byte)0);
+                    ctx.writeAndFlush(responseMessage);
+                }
             }
 //
 //            //修复预览