Mercurial > hg > monetdb-java
diff tests/Test_Cforkbomb.java @ 0:a5a898f6886c
Copy of MonetDB java directory changeset e6e32756ad31.
author | Sjoerd Mullender <sjoerd@acm.org> |
---|---|
date | Wed, 21 Sep 2016 09:34:48 +0200 (2016-09-21) |
parents | |
children | 04fbf3655452 |
line wrap: on
line diff
new file mode 100644 --- /dev/null +++ b/tests/Test_Cforkbomb.java @@ -0,0 +1,59 @@ +/* + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * Copyright 1997 - July 2008 CWI, August 2008 - 2016 MonetDB B.V. + */ + +import java.sql.*; +import java.util.*; + +public class Test_Cforkbomb { + private static String args[]; + + static class Worker extends Thread { + private int id; + + public Worker(int id) { + this.id = id; + } + + public void run() { + try { + System.out.print("Establishing Connection " + id + "..."); + Connection con = DriverManager.getConnection(args[0]); + System.out.println(" done..."); + + // do something with the connection to test if it works + Statement stmt = con.createStatement(); + ResultSet rs = stmt.executeQuery("SELECT " + id); + if (!rs.next()) { + System.out.println("thread " + id + " got no response from server :("); + } else { + if (rs.getInt(1) == id) { + System.out.println("thread " + id + ": connection ok"); + } else { + System.out.println("thread " + id + ": got garbage: " + rs.getString(1)); + } + } + + con.close(); + } catch (SQLException e) { + System.out.println("thread " + id + " unhappy: " + e.toString()); + } + } + } + + public static void main(String[] args) throws Exception { + Test_Cforkbomb.args = args; + Class.forName("nl.cwi.monetdb.jdbc.MonetDriver"); + + // just DoS the server full throttle :) + int i; + for (i = 0; i < 200; i++) { + Worker w = new Worker(i); + w.start(); + } + } +}