Adding upstream version 1:10.11.6.upstream/1%10.11.6upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 210 insertions, 0 deletions

diff --git a/plugin/versioning/versioning.cc b/plugin/versioning/versioning.cc
new file mode 100644
index 00000000..38ebf762
--- /dev/null
+++ b/plugin/versioning/versioning.cc
@@ -0,0 +1,210 @@
+/* Copyright (c) 2016, MariaDB corporation. All rights
+   reserved.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; version 2 of the License.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA */
+
+#define MYSQL_SERVER 1
+#include <my_global.h>
+#include <mysql_version.h>
+#include <mysqld.h>
+#include <mysql/plugin.h>
+#include "sql_plugin.h"                         // st_plugin_int
+#include "sql_class.h"
+#include "item.h"
+#include "table.h"
+#include "vers_string.h"
+
+/* System Versioning: TRT_TRX_ID(), TRT_COMMIT_ID(), TRT_BEGIN_TS(), TRT_COMMIT_TS(), TRT_ISO_LEVEL() */
+template <TR_table::field_id_t TRT_FIELD>
+class Create_func_trt : public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, const LEX_CSTRING *name,
+                              List<Item> *item_list);
+
+  static Create_func_trt<TRT_FIELD> s_singleton;
+
+protected:
+  Create_func_trt<TRT_FIELD>() = default;
+  virtual ~Create_func_trt<TRT_FIELD>() = default;
+};
+
+template<TR_table::field_id_t TRT_FIELD>
+Create_func_trt<TRT_FIELD> Create_func_trt<TRT_FIELD>::s_singleton;
+
+template <TR_table::field_id_t TRT_FIELD>
+Item*
+Create_func_trt<TRT_FIELD>::create_native(THD *thd, const LEX_CSTRING *name,
+  List<Item> *item_list)
+{
+  Item *func= NULL;
+  int arg_count= 0;
+
+  if (item_list != NULL)
+    arg_count= item_list->elements;
+
+  switch (arg_count) {
+  case 1:
+  {
+    Item *param_1= item_list->pop();
+    switch (TRT_FIELD)
+    {
+    case TR_table::FLD_BEGIN_TS:
+    case TR_table::FLD_COMMIT_TS:
+      func= new (thd->mem_root) Item_func_trt_ts(thd, param_1, TRT_FIELD);
+      break;
+    case TR_table::FLD_TRX_ID:
+    case TR_table::FLD_COMMIT_ID:
+    case TR_table::FLD_ISO_LEVEL:
+      func= new (thd->mem_root) Item_func_trt_id(thd, param_1, TRT_FIELD);
+      break;
+    default:
+      DBUG_ASSERT(0);
+    }
+    break;
+  }
+  case 2:
+  {
+    Item *param_1= item_list->pop();
+    Item *param_2= item_list->pop();
+    switch (TRT_FIELD)
+    {
+    case TR_table::FLD_TRX_ID:
+    case TR_table::FLD_COMMIT_ID:
+      func= new (thd->mem_root) Item_func_trt_id(thd, param_1, param_2, TRT_FIELD);
+      break;
+    default:
+      goto error;
+    }
+    break;
+  }
+  error:
+  default:
+  {
+    my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+    break;
+  }
+  }
+
+  return func;
+};
+
+template <class Item_func_trt_trx_seesX>
+class Create_func_trt_trx_sees : public Create_native_func
+{
+public:
+  virtual Item *create_native(THD *thd, const LEX_CSTRING *name,
+                              List<Item> *item_list)
+  {
+    Item *func= NULL;
+    int arg_count= 0;
+
+    if (item_list != NULL)
+      arg_count= item_list->elements;
+
+    switch (arg_count) {
+    case 2:
+    {
+      Item *param_1= item_list->pop();
+      Item *param_2= item_list->pop();
+      func= new (thd->mem_root) Item_func_trt_trx_seesX(thd, param_1, param_2);
+      break;
+    }
+    default:
+      my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
+      break;
+    }
+
+    return func;
+  }
+
+  static Create_func_trt_trx_sees<Item_func_trt_trx_seesX> s_singleton;
+
+protected:
+  Create_func_trt_trx_sees<Item_func_trt_trx_seesX>() = default;
+  virtual ~Create_func_trt_trx_sees<Item_func_trt_trx_seesX>() = default;
+};
+
+template<class X>
+Create_func_trt_trx_sees<X> Create_func_trt_trx_sees<X>::s_singleton;
+
+#define BUILDER(F) & F::s_singleton
+
+static const Native_func_registry func_array_vers[] =
+{
+  { { C_STRING_WITH_LEN("TRT_BEGIN_TS") }, BUILDER(Create_func_trt<TR_table::FLD_BEGIN_TS>)},
+  { { C_STRING_WITH_LEN("TRT_COMMIT_ID") }, BUILDER(Create_func_trt<TR_table::FLD_COMMIT_ID>)},
+  { { C_STRING_WITH_LEN("TRT_COMMIT_TS") }, BUILDER(Create_func_trt<TR_table::FLD_COMMIT_TS>)},
+  { { C_STRING_WITH_LEN("TRT_ISO_LEVEL") }, BUILDER(Create_func_trt<TR_table::FLD_ISO_LEVEL>)},
+  { { C_STRING_WITH_LEN("TRT_TRX_ID") }, BUILDER(Create_func_trt<TR_table::FLD_TRX_ID>)},
+  { { C_STRING_WITH_LEN("TRT_TRX_SEES") }, BUILDER(Create_func_trt_trx_sees<Item_func_trt_trx_sees>)},
+  { { C_STRING_WITH_LEN("TRT_TRX_SEES_EQ") }, BUILDER(Create_func_trt_trx_sees<Item_func_trt_trx_sees_eq>)},
+  { {0, 0}, NULL}
+};
+
+
+/*
+  Disable __attribute__() on non-gcc compilers.
+*/
+#if !defined(__attribute__) && !defined(__GNUC__)
+#define __attribute__(A)
+#endif
+
+static int versioning_plugin_init(void *p __attribute__ ((unused)))
+{
+  DBUG_ENTER("versioning_plugin_init");
+  // No need in locking since we so far single-threaded
+  int res= native_functions_hash.append(func_array_vers,
+                                        array_elements(func_array_vers));
+  if (res)
+  {
+    my_message(ER_PLUGIN_IS_NOT_LOADED, "Can't append function array" , MYF(0));
+    DBUG_RETURN(res);
+  }
+
+  DBUG_RETURN(0);
+}
+
+static int versioning_plugin_deinit(void *p __attribute__ ((unused)))
+{
+  DBUG_ENTER("versioning_plugin_deinit");
+  (void) native_functions_hash.remove(func_array_vers,
+                                      array_elements(func_array_vers));
+  DBUG_RETURN(0);
+}
+
+struct st_mysql_daemon versioning_plugin=
+{ MYSQL_REPLICATION_INTERFACE_VERSION  };
+
+/*
+  Plugin library descriptor
+*/
+
+maria_declare_plugin(versioning)
+{
+  MYSQL_REPLICATION_PLUGIN, // initialized after MYSQL_STORAGE_ENGINE_PLUGIN
+  &versioning_plugin,
+  "test_versioning",
+  "MariaDB Corp",
+  "System Vesioning testing features",
+  PLUGIN_LICENSE_GPL,
+  versioning_plugin_init, /* Plugin Init */
+  versioning_plugin_deinit, /* Plugin Deinit */
+  0x0100 /* 1.0 */,
+  NULL,                       /* status variables                */
+  NULL,                       /* system variables                */
+  "1.0",                      /* string version */
+  MariaDB_PLUGIN_MATURITY_EXPERIMENTAL
+}
+maria_declare_plugin_end;