105 lines
3.2 KiB
C++
105 lines
3.2 KiB
C++
/**
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* @file connection_limit.cpp connection_limit check if max_connections parameter works
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*
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* - Maxscale.cnf contains max_connections=10 for RWSplit, max_connections=20 for ReadConn master and
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* max_connections=25 for ReadConn slave
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* - create max num of connections and check tha N+1 connection fails
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*/
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#include <maxtest/testconnections.hh>
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void check_with_wrong_pw(int router, int max_conn, TestConnections& test);
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void check_max_conn(int router, int max_conn, TestConnections& test);
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int main(int argc, char* argv[])
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{
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TestConnections test(argc, argv);
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// First test with wrong pw to see that count is properly decremented.
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test.tprintf("Trying 20 connections with RWSplit with wrong password\n");
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check_with_wrong_pw(0, 20, test);
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if (test.ok())
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{
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test.tprintf("Trying 11 connections with RWSplit\n");
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check_max_conn(0, 10, test);
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}
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if (test.ok())
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{
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test.tprintf("Trying 21 connections with Readconn master\n");
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check_max_conn(1, 20, test);
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}
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if (test.ok())
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{
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test.tprintf("Trying 26 connections with Readconnn slave\n");
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check_max_conn(2, 25, test);
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}
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test.check_maxscale_alive(0);
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int rval = test.global_result;
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return rval;
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}
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void check_with_wrong_pw(int router, int max_conn, TestConnections& test)
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{
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// Check MXS-2645, connection count is not decremented properly when authentication fails.
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const char wrong_pw[] = "batman";
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bool limit_reached = false;
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for (int i = 0; i < max_conn && !limit_reached; i++)
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{
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MYSQL* failed_conn = open_conn(
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test.maxscales->ports[0][router], test.maxscales->IP[0],
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test.maxscales->user_name, wrong_pw,
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test.ssl);
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auto error = mysql_errno(failed_conn);
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if (error == 0)
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{
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test.expect(false, "Connection succeeded when it should have failed.");
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}
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else if (error == 1040)
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{
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test.expect(false, "Connection limit wrongfully reached.");
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limit_reached = true;
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}
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mysql_close(failed_conn);
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}
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}
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void check_max_conn(int router, int max_conn, TestConnections& test)
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{
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MYSQL* conn[max_conn + 1];
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int i;
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for (i = 0; i < max_conn; i++)
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{
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conn[i] = open_conn(test.maxscales->ports[0][router],
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test.maxscales->IP[0],
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test.maxscales->user_name,
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test.maxscales->password,
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test.ssl);
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if (mysql_errno(conn[i]) != 0)
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{
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test.add_result(1, "Connection %d failed, error is %s\n", i, mysql_error(conn[i]));
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}
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}
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conn[max_conn] = open_conn(test.maxscales->ports[0][router],
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test.maxscales->IP[0],
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test.maxscales->user_name,
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test.maxscales->password,
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test.ssl);
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if (mysql_errno(conn[i]) != 1040)
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{
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test.add_result(1,
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"Max_xonnections reached, but error is not 1040, it is %d %s\n",
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mysql_errno(conn[i]),
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mysql_error(conn[i]));
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}
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for (i = 0; i < max_conn; i++)
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{
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mysql_close(conn[i]);
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}
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}
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