From fdc6de263a58480519d683e67bb3dfa262d9b230 Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Thu, 5 Aug 2021 23:30:09 +0100
Subject: Handle gtid and xid transaction events

---
 lib/output/pq/updateDatabase.cpp | 30 +++++++++++++++++++++++++++---
 lib/output/pq/updateDatabase.h   |  3 +++
 2 files changed, 30 insertions(+), 3 deletions(-)

(limited to 'lib/output')

diff --git a/lib/output/pq/updateDatabase.cpp b/lib/output/pq/updateDatabase.cpp
index 232e8f9..ea8797b 100644
--- a/lib/output/pq/updateDatabase.cpp
+++ b/lib/output/pq/updateDatabase.cpp
@@ -27,6 +27,8 @@
 #include <streamSupport.h>
 
 namespace MyGrate::Output::Pq {
+	constexpr uint8_t STANDALONE {1};
+
 #ifndef __cpp_aggregate_paren_init
 	ColumnDef::ColumnDef(std::string n, std::size_t o, bool p) : name {std::move(n)}, ordinal(o), is_pk(p) { }
 #endif
@@ -266,14 +268,18 @@ namespace MyGrate::Output::Pq {
 	void
 	UpdateDatabase::beforeEvent(const MariaDB_Event_Ptr &)
 	{
-		beginTx();
+		if (!intx) {
+			beginTx();
+		}
 	}
 
 	void
 	UpdateDatabase::afterEvent(const MariaDB_Event_Ptr & e)
 	{
-		output::pq::sql::updateSourcePosition::execute(this, e->next_event_pos, source);
-		commitTx();
+		if (!intx) {
+			output::pq::sql::updateSourcePosition::execute(this, e->next_event_pos, source);
+			commitTx();
+		}
 	}
 
 	void
@@ -401,4 +407,22 @@ namespace MyGrate::Output::Pq {
 			afterEvent(e);
 		}
 	}
+
+	void
+	UpdateDatabase::gtid(MariaDB_Event_Ptr e)
+	{
+		beforeEvent(e);
+		if (!(e->event.gtid.flags & STANDALONE)) {
+			intx = true;
+		}
+		afterEvent(e);
+	}
+
+	void
+	UpdateDatabase::xid(MariaDB_Event_Ptr e)
+	{
+		beforeEvent(e);
+		intx = false;
+		afterEvent(e);
+	}
 }
diff --git a/lib/output/pq/updateDatabase.h b/lib/output/pq/updateDatabase.h
index d2b4872..716d7f6 100644
--- a/lib/output/pq/updateDatabase.h
+++ b/lib/output/pq/updateDatabase.h
@@ -59,6 +59,8 @@ namespace MyGrate::Output::Pq {
 		void insertRow(MariaDB_Event_Ptr) override;
 		void tableMap(MariaDB_Event_Ptr) override;
 		void rotate(MariaDB_Event_Ptr) override;
+		void gtid(MariaDB_Event_Ptr) override;
+		void xid(MariaDB_Event_Ptr) override;
 
 		const uint64_t source;
 		const std::string schema;
@@ -81,6 +83,7 @@ namespace MyGrate::Output::Pq {
 		Tables tables;
 		Tables::const_iterator selected;
 		MariaDB_Event_Ptr table_map;
+		bool intx {false};
 	};
 }
 
-- 
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