chore(zerozone2): rename channelOffset targetNodeId to attributes (#2794)

Signed-off-by: Robin Han <[email protected]>

Author: superhx

core/src/main/java/kafka/automq/zerozone/ChannelOffset.java

@@ -27,7 +27,7 @@ public class ChannelOffset {
     private static final int CHANNEL_ID_INDEX = 1;
     private static final int ORDER_HINT_INDEX = 3;
     private static final int CHANNEL_OWNER_NODE_ID_INDEX = 5;
-    private static final int TARGET_NODE_ID_INDEX = 9;
+    private static final int CHANNEL_ATTRIBUTES = 9;
     private static final int WAL_RECORD_OFFSET_INDEX = 13;
 
     private final ByteBuf buf;
@@ -40,15 +40,15 @@ public static ChannelOffset of(ByteBuf buf) {
         return new ChannelOffset(buf);
     }
 
-    public static ChannelOffset of(short channelId, short orderHint, int channelOwnerNodeId, int targetNodeId,
+    public static ChannelOffset of(short channelId, short orderHint, int channelOwnerNodeId, int attributes,
         ByteBuf walRecordOffset) {
         ByteBuf channelOffset = Unpooled.buffer(1 /* magic */ + 2 /* channelId */ + 2 /* orderHint */
             + 4 /* channelOwnerNodeId */ + 4 /* targetNodeId */ + walRecordOffset.readableBytes());
         channelOffset.writeByte(MAGIC);
         channelOffset.writeShort(channelId);
         channelOffset.writeShort(orderHint);
         channelOffset.writeInt(channelOwnerNodeId);
-        channelOffset.writeInt(targetNodeId);
+        channelOffset.writeInt(attributes);
         channelOffset.writeBytes(walRecordOffset.duplicate());
         return of(channelOffset);
     }
@@ -65,8 +65,8 @@ public int channelOwnerNodeId() {
         return buf.getInt(CHANNEL_OWNER_NODE_ID_INDEX);
     }
 
-    public int targetNodeId() {
-        return buf.getInt(TARGET_NODE_ID_INDEX);
+    public int attributes() {
+        return buf.getInt(CHANNEL_ATTRIBUTES);
     }
 
     public ByteBuf walRecordOffset() {
@@ -83,7 +83,7 @@ public String toString() {
             "channelId=" + channelId() +
             ", orderHint=" + orderHint() +
             ", channelOwnerNodeId=" + channelOwnerNodeId() +
-            ", targetNodeId=" + targetNodeId() +
+            ", attributes=" + attributes() +
             '}';
     }
 }