added replication of VIEW DDL commands (BUG#4838)

sql/sql_acl.cc:
  filling privileges for slave thread fixed
sql/sql_parse.cc:
  added writing to binary log view DDL commands

mysql-test/r/rpl_view.result

+stop slave;
+drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
+reset master;
+reset slave;
+drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
+start slave;
+drop table if exists t1,v1;
+drop view if exists t1,v1;
+create table t1 (a int);
+insert into t1 values (1);
+create view v1 as select a from t1;
+insert into v1 values (2);
+select * from v1 order by a;
+a
+1
+2
+select * from v1 order by a;
+a
+1
+2
+update v1 set a=3 where a=1;
+select * from v1 order by a;
+a
+2
+3
+select * from v1 order by a;
+a
+2
+3
+delete from v1 where a=2;
+select * from v1 order by a;
+a
+3
+select * from v1 order by a;
+a
+3
+alter view v1 as select a as b from t1;
+select * from v1 order by 1;
+b
+3
+drop view v1;
+select * from v1 order by a;
+ERROR 42S02: Table 'test.v1' doesn't exist
+drop table t1;

mysql-test/t/rpl_view.test

+source include/master-slave.inc;
+--disable_warnings
+drop table if exists t1,v1;
+drop view if exists t1,v1;
+sync_slave_with_master;
+--enable_warnings
+
+#
+# Check that createion drop of view is replicated, also check replication of
+# updating of view
+#
+connection master;
+create table t1 (a int);
+insert into t1 values (1);
+create view v1 as select a from t1;
+insert into v1 values (2);
+select * from v1 order by a;
+sync_slave_with_master;
+# view already have to be on slave
+select * from v1 order by a;
+connection master;
+update v1 set a=3 where a=1;
+select * from v1 order by a;
+sync_slave_with_master;
+select * from v1 order by a;
+connection master;
+delete from v1 where a=2;
+select * from v1 order by a;
+sync_slave_with_master;
+select * from v1 order by a;
+connection master;
+# 'alter view' internally maped to creation, but still check that it works
+alter view v1 as select a as b from t1;
+sync_slave_with_master;
+select * from v1 order by 1;
+connection master;
+drop view v1;
+sync_slave_with_master;
+#error, because view have to be removed from slave
+-- error 1146
+select * from v1 order by a;
+connection master;
+drop table t1;
+sync_slave_with_master;

sql/sql_acl.cc

@@ -5516,6 +5516,9 @@ void fill_effective_table_privileges(THD *thd, GRANT_INFO *grant,
   /* global privileges */
   grant->privilege= thd->master_access;
 
+  if (!thd->priv_user)
+    return;                                   // it is slave
+
   /* db privileges */
   grant->privilege|= acl_get(thd->host, thd->ip, thd->priv_user, db, 0);
 

sql/sql_parse.cc

@@ -4059,7 +4059,12 @@ mysql_execute_command(THD *thd)
     }
   case SQLCOM_CREATE_VIEW:
     {
-      res= mysql_create_view(thd, thd->lex->create_view_mode);
+      if (!(res= mysql_create_view(thd, thd->lex->create_view_mode)) &&
+          mysql_bin_log.is_open())
+      {
+        Query_log_event qinfo(thd, thd->query, thd->query_length, 0, FALSE);
+        mysql_bin_log.write(&qinfo);
+      }
       break;
     }
   case SQLCOM_DROP_VIEW:
@@ -4067,7 +4072,12 @@ mysql_execute_command(THD *thd)
       if (check_table_access(thd, DROP_ACL, all_tables, 0) ||
           end_active_trans(thd))
         goto error;
-      res= mysql_drop_view(thd, first_table, thd->lex->drop_mode);
+      if (!(res= mysql_drop_view(thd, first_table, thd->lex->drop_mode)) &&
+          mysql_bin_log.is_open())
+      {
+        Query_log_event qinfo(thd, thd->query, thd->query_length, 0, FALSE);
+        mysql_bin_log.write(&qinfo);
+      }
       break;
     }
   case SQLCOM_CREATE_TRIGGER: