BUG#27779 (Slave cannot read old rows log events):

Taking code from before BUG#22583 and incorporating as events to be able
to read old events. Also incorporating old pack and unpack functions
into patch.


client/Makefile.am:
  Adding files log_event_old.{h,cc} and rpl_record_old.{h,cc}
client/mysqlbinlog.cc:
  Adding log_event_old.cc.
libmysqld/Makefile.am:
  Adding files log_event_old.{h,cc} and rpl_record_old.{h,cc}
sql/CMakeLists.txt:
  Adding files log_event_old.{h,cc} and rpl_record_old.{h,cc}
sql/Makefile.am:
  Adding files log_event_old.{h,cc} and rpl_record_old.{h,cc}
sql/log_event.cc:
  Adding code to read pre-GA rows events.
sql/log_event.h:
  Refactoring to support inheritance and including "old" events definitions.
sql/log_event_old.cc:
  New BitKeeper file ``sql/log_event_old.cc''
sql/log_event_old.h:
  New BitKeeper file ``sql/log_event_old.h''
sql/rpl_record_old.cc:
  New BitKeeper file ``sql/rpl_record_old.cc''
sql/rpl_record_old.h:
  New BitKeeper file ``sql/rpl_record_old.h''

1 files changed, 91 insertions, 0 deletions

diff --git a/sql/log_event_old.h b/sql/log_event_old.h
new file mode 100644
index 00000000000..aad0f6cc6cd
--- /dev/null
+++ b/sql/log_event_old.h
@@ -0,0 +1,91 @@
+#ifndef LOG_EVENT_OLD_H
+#define LOG_EVENT_OLD_H
+
+/*
+  Need to include this file at the proper position of log_event.h
+ */
+
+
+class Write_rows_log_event_old : public Write_rows_log_event
+{
+public:
+  enum
+  {
+    /* Support interface to THD::binlog_prepare_pending_rows_event */
+    TYPE_CODE = PRE_GA_WRITE_ROWS_EVENT
+  };
+
+#if defined(HAVE_REPLICATION)
+  Write_rows_log_event_old(const char *buf, uint event_len,
+                           const Format_description_log_event *descr)
+    : Write_rows_log_event(buf, event_len, descr)
+  {
+  }
+#endif
+
+private:
+  virtual Log_event_type get_type_code() { return (Log_event_type)TYPE_CODE; }
+
+#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
+  virtual int do_prepare_row(THD*, RELAY_LOG_INFO*, TABLE*,
+                             char const *row_start, char const **row_end);
+#endif
+};
+
+
+class Update_rows_log_event_old : public Update_rows_log_event
+{
+public:
+  enum 
+  {
+    /* Support interface to THD::binlog_prepare_pending_rows_event */
+    TYPE_CODE = PRE_GA_UPDATE_ROWS_EVENT
+  };
+
+#if defined(HAVE_REPLICATION)
+  Update_rows_log_event_old(const char *buf, uint event_len, 
+                            const Format_description_log_event *descr)
+    : Update_rows_log_event(buf, event_len, descr)
+  {
+  }
+#endif
+
+private:
+  virtual Log_event_type get_type_code() { return (Log_event_type)TYPE_CODE; }
+
+#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
+  virtual int do_prepare_row(THD*, RELAY_LOG_INFO*, TABLE*,
+                             char const *row_start, char const **row_end);
+#endif /* !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) */
+};
+
+
+class Delete_rows_log_event_old : public Delete_rows_log_event
+{
+public:
+  enum 
+  {
+    /* Support interface to THD::binlog_prepare_pending_rows_event */
+    TYPE_CODE = PRE_GA_DELETE_ROWS_EVENT
+  };
+
+#if defined(HAVE_REPLICATION)
+  Delete_rows_log_event_old(const char *buf, uint event_len,
+                            const Format_description_log_event *descr)
+    : Delete_rows_log_event(buf, event_len, descr)
+  {
+  }
+#endif
+
+private:
+  virtual Log_event_type get_type_code() { return (Log_event_type)TYPE_CODE; }
+
+#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
+  virtual int do_prepare_row(THD*, RELAY_LOG_INFO*, TABLE*,
+                             char const *row_start, char const **row_end);
+#endif
+};
+
+
+#endif
+