支持通过GTID同步binlog

protocol/src/main/java/com/alibaba/otter/canal/protocol/EntryProtocol.proto

@@ -55,7 +55,10 @@ message Header {
 	optional EventType 				eventType			= 11 [default = UPDATE];
 	
 	/**预留扩展**/
-	repeated Pair					props				= 12;		
+	repeated Pair					props				= 12;
+
+    /**当前事务的gitd**/
+	optional string                 gtid                = 13;
 }
 
 /**每个字段的数据结构**/
@@ -169,7 +172,8 @@ enum EntryType{
 	ROWDATA					=		2;
 	TRANSACTIONEND			=		3;
 	/** 心跳类型，内部使用，外部暂不可见，可忽略 **/
-	HEARTBEAT				=		4; 
+	HEARTBEAT				=		4;
+	GTIDLOG                 =       5;
 }
 
 /** 事件类型 **/
@@ -186,6 +190,7 @@ enum EventType {
     /**CREATE INDEX**/
     CINDEX		= 		10;
     DINDEX 		= 		11;
+    GTID        =       12;
 }
 
 /**数据库类型**/

protocol/src/main/java/com/alibaba/otter/canal/protocol/position/EntryPosition.java

@@ -18,6 +18,7 @@ public class EntryPosition extends TimePosition {
     private Long              position;
     // add by agapple at 2016-06-28
     private Long              serverId              = null;              // 记录一下位点对应的serverId
+    private String            gtid                  = null;
 
     public EntryPosition(){
         super(null);
@@ -74,6 +75,14 @@ public class EntryPosition extends TimePosition {
         this.serverId = serverId;
     }
 
+    public String getGtid() {
+        return gtid;
+    }
+
+    public void setGtid(String gtid) {
+        this.gtid = gtid;
+    }
+
     @Override
     public int hashCode() {
         final int prime = 31;