Implemented master balancing.

extensions/sphinx/Schema.php

@@ -324,7 +324,7 @@ class Schema extends Object
     public function quoteValue($str)
     {
         if (is_string($str)) {
-            return $this->db->getReadPdo()->quote($str);
+            return $this->db->getSlavePdo()->quote($str);
         } else {
             return $str;
         }

framework/db/Command.php

@@ -161,9 +161,9 @@ class Command extends \yii\base\Component
         $sql = $this->getSql();
 
         if ($forRead || $forRead === null && $this->db->getSchema()->isReadQuery($sql)) {
-            $pdo = $this->db->getReadPdo();
+            $pdo = $this->db->getSlavePdo();
         } else {
-            $pdo = $this->db->getWritePdo();
+            $pdo = $this->db->getMasterPdo();
         }
 
         try {

framework/db/Schema.php

@@ -369,7 +369,7 @@ abstract class Schema extends Object
             return $str;
         }
 
-        if (($value = $this->db->getReadPdo()->quote($str)) !== false) {
+        if (($value = $this->db->getSlavePdo()->quote($str)) !== false) {
             return $value;
         } else {
             // the driver doesn't support quote (e.g. oci)

framework/db/cubrid/Schema.php

@@ -116,7 +116,7 @@ class Schema extends \yii\db\Schema
             return $str;
         }
 
-        $pdo = $this->db->getReadPdo();
+        $pdo = $this->db->getSlavePdo();
 
         // workaround for broken PDO::quote() implementation in CUBRID 9.1.0 http://jira.cubrid.org/browse/APIS-658
         $version = $pdo->getAttribute(\PDO::ATTR_CLIENT_VERSION);
@@ -143,7 +143,7 @@ class Schema extends \yii\db\Schema
      */
     protected function loadTableSchema($name)
     {
-        $pdo = $this->db->getReadPdo();
+        $pdo = $this->db->getSlavePdo();
 
         $tableInfo = $pdo->cubrid_schema(\PDO::CUBRID_SCH_TABLE, $name);
 
@@ -266,7 +266,7 @@ class Schema extends \yii\db\Schema
      */
     protected function findTableNames($schema = '')
     {
-        $pdo = $this->db->getReadPdo();
+        $pdo = $this->db->getSlavePdo();
         $tables =$pdo->cubrid_schema(\PDO::CUBRID_SCH_TABLE);
         $tableNames = [];
         foreach ($tables as $table) {

framework/db/mssql/QueryBuilder.php

@@ -239,7 +239,7 @@ class QueryBuilder extends \yii\db\QueryBuilder
      */
     protected function isOldMssql()
     {
-        $pdo = $this->db->getReadPdo();
+        $pdo = $this->db->getSlavePdo();
         $version = preg_split("/\./", $pdo->getAttribute(\PDO::ATTR_SERVER_VERSION));
         return $version[0] < 11;
     }

framework/db/pgsql/QueryBuilder.php

@@ -137,7 +137,7 @@ class QueryBuilder extends \yii\db\QueryBuilder
         }
 
         // enable to have ability to alter several tables
-        $this->db->getWritePdo()->setAttribute(\PDO::ATTR_EMULATE_PREPARES, true);
+        $this->db->getMasterPdo()->setAttribute(\PDO::ATTR_EMULATE_PREPARES, true);
 
         return $command;
     }