Merge branch '2.3' into 2.4

system-test/rwsplit_php_stmt.cpp

@@ -0,0 +1,87 @@
+/**
+ * @file bug729.cpp regression case for bug 729 ("PDO prepared statements bug introduced")
+ *
+ * - execute following PHP script
+ * @verbatim
+ *  <?php
+ *  $options = [
+ *   PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
+ *   PDO::ATTR_EMULATE_PREPARES => false,
+ *  ];
+ *
+ *  $host=$argv[1];
+ *  $port=$argv[2];
+ *  $user=$argv[3];
+ *  $pass=$argv[4];
+ *
+ *  $dsn = "mysql:host=".$host.";port=".$port.";dbname=information_schema";
+ *  $dbh = new PDO( $dsn, $user, $pass, $options );
+ *  $res = $dbh
+ *   ->query( "SELECT COLLATION_NAME FROM COLLATIONS" )
+ *   ->fetch( PDO::FETCH_COLUMN );
+ *
+ *  var_dump( $res );
+ *
+ *  @endverbatim
+ * - check log for "Can't route MYSQL_COM_STMT_PREPARE"
+ */
+
+/*
+ *
+ *  Description Andreas K-Hansen 2015-02-12 19:32:13 UTC
+ *
+ *  The error occurred when upgrading from Maxscale 1.0.4 to 1.0.5.
+ *  The following exception occurs when trying to execute a query with prepared statements enabled:
+ *
+ *  PHP Fatal error:  Uncaught exception 'PDOException' with message 'SQLSTATE[42000]: Syntax error or access
+ * violation: 1064 Routing query to backend failed. See the error log for further details.' in
+ * /root/test.php:10
+ *  Stack trace:
+ #0 /root/test.php(10): PDO->query('SELECT COLLATIO...')
+ #1 {main}
+ *  thrown in /root/test.php on line 10
+ *
+ *  - Error log
+ *  Feb 12 19:14:01 363d6aec0f8c MaxScale[263]: Error: Failed to obtain address for host ::1, Address family
+ * for hostname not supported
+ *  Feb 12 19:14:01 363d6aec0f8c MaxScale[263]: Warning: Failed to add user root@::1 for service [RW Split
+ * Router]. This user will be unavailable via MaxScale.
+ *  Feb 12 19:14:01 363d6aec0f8c MaxScale[263]: Warning: Failed to add user root@127.0.0.1 for service [RW
+ * Split Router]. This user will be unavailable via MaxScale.
+ *  Feb 12 19:14:10 363d6aec0f8c MaxScale[263]: Warning : The query can't be routed to all backend servers
+ * because it includes SELECT and SQL variable modifications which is not supported. Set
+ * use_sql_variables_in=master or split the query to two, where SQL variable modifications are done in the
+ * first and the SELECT in the second one.
+ *  Feb 12 19:14:10 363d6aec0f8c MaxScale[263]: Error : Can't route
+ * MYSQL_COM_STMT_PREPARE:QUERY_TYPE_READ|QUERY_TYPE_PREPARE_STMT:"MYSQL_COM_STMT_PREPARE". SELECT with
+ * session data modification is not supported if configuration parameter use_sql_variables_in=all .
+ *
+ */
+
+
+#include <iostream>
+#include <maxtest/testconnections.hh>
+
+int main(int argc, char* argv[])
+{
+    TestConnections* Test = new TestConnections(argc, argv);
+    Test->set_timeout(30);
+    char str[4096 + 1024];
+
+    sprintf(str,
+            "php %s/rwsplit_php_stmt.php %s %d %s %s",
+            test_dir,
+            Test->maxscales->IP[0],
+            Test->maxscales->rwsplit_port[0],
+            Test->maxscales->user_name,
+            Test->maxscales->password);
+
+    Test->tprintf("Executing PHP script: %s\n", str);
+    Test->add_result(system(str), "PHP script FAILED!\n");
+
+    Test->log_excludes(0, "Can't route MYSQL_COM_STMT_PREPARE");
+
+    int rval = Test->global_result;
+    delete Test;
+    return rval;
+}