Add support for slave_compressed_protocol, slave_load_tmpdir, and

slave_skip_errors in SHOW VARIABLES. (Bug #7800)


sql/structs.h:
  Add SHOW_SLAVE_SKIP_ERRORS
sql/set_var.cc:
  Add slave_compressed_protocol, slave_load_tmpdir, slave_skip_errors to list
  of variables.
mysql-test/t/rpl_variables.test:
  Add test for additional slave-related variables
mysql-test/r/rpl_variables.result:
  Update results
sql/sql_show.cc:
  Handle showing slave_skip_errors

mysql-test/r/rpl_variables.result

@@ -6,3 +6,12 @@ drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
 start slave;
 set global slave_net_timeout=100;
 set global sql_slave_skip_counter=100;
+show variables like 'slave_compressed_protocol';
+Variable_name	Value
+slave_compressed_protocol	OFF
+show variables like 'slave_load_tmpdir';
+Variable_name	Value
+slave_load_tmpdir	MYSQL_TEST_DIR/var/tmp/
+show variables like 'slave_skip_errors';
+Variable_name	Value
+slave_skip_errors	3,100,137,643,1752

mysql-test/t/rpl_variables-master.opt

@@ -0,0 +1 @@
+--slave-skip-errors=3,100,137,643,1752

mysql-test/t/rpl_variables.test

@@ -2,3 +2,11 @@ source include/master-slave.inc;
 
 set global slave_net_timeout=100;
 set global sql_slave_skip_counter=100;
+
+# BUG #7800: Add various-slave related variables to SHOW VARIABLES
+show variables like 'slave_compressed_protocol';
+--replace_result $MYSQL_TEST_DIR MYSQL_TEST_DIR
+show variables like 'slave_load_tmpdir';
+# We just set some arbitrary values in variables-master.opt so we can test
+# that a list of values works correctly
+show variables like 'slave_skip_errors';

sql/set_var.cc

@@ -951,7 +951,11 @@ struct show_var_st init_vars[]= {
   {"skip_networking",         (char*) &opt_disable_networking,      SHOW_BOOL},
   {"skip_show_database",      (char*) &opt_skip_show_db,            SHOW_BOOL},
 #ifdef HAVE_REPLICATION
+  {sys_slave_compressed_protocol.name,
+    (char*) &sys_slave_compressed_protocol,           SHOW_SYS},
+  {"slave_load_tmpdir",       (char*) &slave_load_tmpdir,           SHOW_CHAR_PTR},
   {sys_slave_net_timeout.name,(char*) &sys_slave_net_timeout,	    SHOW_SYS},
+  {"slave_skip_errors",       (char*) &slave_error_mask,            SHOW_SLAVE_SKIP_ERRORS},
   {sys_slave_trans_retries.name,(char*) &sys_slave_trans_retries,   SHOW_SYS},
 #endif
   {sys_slow_launch_time.name, (char*) &sys_slow_launch_time,        SHOW_SYS},

sql/sql_show.cc

@@ -1345,6 +1345,33 @@ static bool show_status_array(THD *thd, const char *wild,
 	  pthread_mutex_unlock(&LOCK_active_mi);
 	  break;
         }
+        case SHOW_SLAVE_SKIP_ERRORS:
+        {
+          MY_BITMAP *bitmap= (MY_BITMAP *)value;
+          if (!use_slave_mask || bitmap_is_clear_all(bitmap))
+          {
+            end= strmov(buff, "OFF");
+          }
+          else if (bitmap_is_set_all(bitmap))
+          {
+            end= strmov(buff, "ALL");
+          }
+          else
+          {
+            for (int i= 1; i < MAX_SLAVE_ERROR; i++)
+            {
+              if (bitmap_is_set(bitmap, i))
+              {
+                end+= my_snprintf((char *)end, sizeof(buff) - (end - buff),
+                                  "%d,", i);
+              }
+            }
+            if (end != buff)
+              end--;				// Remove last ','
+            *(char *)end= 0;
+          }
+          break;
+        }
 #endif /* HAVE_REPLICATION */
         case SHOW_OPENTABLES:
           end= int10_to_str((long) cached_tables(), buff, 10);

sql/structs.h

@@ -184,7 +184,7 @@ enum SHOW_TYPE
 #endif /* HAVE_OPENSSL */
   SHOW_RPL_STATUS, SHOW_SLAVE_RUNNING, SHOW_SLAVE_RETRIED_TRANS,
   SHOW_KEY_CACHE_LONG, SHOW_KEY_CACHE_CONST_LONG,
-  SHOW_LONG_STATUS, SHOW_LONG_CONST_STATUS
+  SHOW_LONG_STATUS, SHOW_LONG_CONST_STATUS, SHOW_SLAVE_SKIP_ERRORS
 };
 
 enum SHOW_COMP_OPTION { SHOW_OPTION_YES, SHOW_OPTION_NO, SHOW_OPTION_DISABLED};