/*
* Copyright ( c ) 2011 , 2019 , Oracle and / or its affiliates . All rights reserved .
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
*
* This code is free software ; you can redistribute it and / or modify it
* under the terms of the GNU General Public License version 2 only , as
* published by the Free Software Foundation .
*
* This code is distributed in the hope that it will be useful , but WITHOUT
* ANY WARRANTY ; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE . See the GNU General Public License
* version 2 for more details ( a copy is included in the LICENSE file that
* accompanied this code ) .
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
*
* Please contact Oracle , 500 Oracle Parkway , Redwood Shores , CA 94065 USA
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*/
/*
* @ test
* @ library / test / lib
* lib /
* @ run testng / othervm LdapTimeoutTest
* @ bug 7094377 8000487 6176036 7056489 8151678
* @ summary Timeout tests for ldap
*/
import org.testng.Assert ;
import org.testng.annotations.BeforeTest;
import org.testng.annotations.Test;
import javax.naming.Context;
import javax.naming.NamingException;
import javax.naming.directory.InitialDirContext;
import javax.naming.directory.SearchControls;
import java.io.IOException;
import java.io.OutputStream;
import java.net.Socket;
import java.util.ArrayList;
import java.util.Hashtable;
import java.util.List;
import java.util.Objects;
import java.util.concurrent.Callable;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import java.util.concurrent.FutureTask;
import java.util.concurrent.SynchronousQueue;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import static java.lang.String.format;
import static java.util.concurrent.TimeUnit.MILLISECONDS;
import static java.util.concurrent.TimeUnit.NANOSECONDS;
import static jdk.test.lib.Utils.adjustTimeout;
import static org.testng.Assert .assertTrue;
import static org.testng.Assert .expectThrows;
public class LdapTimeoutTest {
// ------ configure test timeouts here ------
/*
* Practical representation of an infinite timeout .
*/
private static final long INFINITY_MILLIS = adjustTimeout(20 _000 );
/*
* The acceptable variation in timeout measurements .
*/
private static final long TOLERANCE = adjustTimeout( 3 _500 );
private static final long CONNECT_MILLIS = adjustTimeout( 3 _000 );
private static final long READ_MILLIS = adjustTimeout(10 _000 );
static {
// a series of checks to make sure this timeouts configuration is
// consistent and the timeouts do not overlap
assert (TOLERANCE >= 0 );
// context creation
assert (2 * CONNECT_MILLIS + TOLERANCE < READ_MILLIS);
// context creation immediately followed by search
assert (2 * CONNECT_MILLIS + READ_MILLIS + TOLERANCE < INFINITY_MILLIS);
}
@BeforeTest
public void beforeTest() {
startAuxiliaryDiagnosticOutput();
}
/*
* These are timeout tests and they are run in parallel to reduce the total
* amount of run time .
*
* Currently it doesn ' t seem possible to instruct JTREG to run TestNG test
* methods in parallel . That said , this JTREG test is still
* a " TestNG - flavored " test for the sake of having org . testng . Assert
* capability .
*/
@Test
public void test() throws Exception {
List<Future<?>> futures = new ArrayList<>();
ExecutorService executorService = Executors.newCachedThreadPool();
try {
futures.add(executorService.submit(() -> { test1(); return null ; }));
futures.add(executorService.submit(() -> { test2(); return null ; }));
futures.add(executorService.submit(() -> { test3(); return null ; }));
futures.add(executorService.submit(() -> { test4(); return null ; }));
futures.add(executorService.submit(() -> { test5(); return null ; }));
futures.add(executorService.submit(() -> { test6(); return null ; }));
futures.add(executorService.submit(() -> { test7(); return null ; }));
} finally {
executorService.shutdown();
}
int failedCount = 0 ;
for (var f : futures) {
try {
f.get();
} catch (ExecutionException e) {
failedCount++;
e.getCause().printStackTrace(System.out);
}
}
if (failedCount > 0 )
throw new RuntimeException(failedCount + " (sub)tests failed" );
}
static void test1() throws Exception {
Hashtable<Object, Object> env = new Hashtable<>();
env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory" );
// Here and in the other tests it's important to close the server as
// calling `thread.interrupt` from assertion may not be enough
// (depending on where the blocking call has stuck)
try (TestServer server = new NotBindableServer()) {
env.put(Context.PROVIDER_URL, urlTo(server));
server.start();
// Here and in the other tests joining done purely to reduce timing
// jitter. Commenting out or removing that should not make the test
// incorrect. (ServerSocket can accept connection as soon as it is
// bound, not need to call `accept` before that.)
server.starting().join();
assertIncompletion(INFINITY_MILLIS, () -> new InitialDirContext(env));
}
}
static void test2() throws Exception {
Hashtable<Object, Object> env = new Hashtable<>();
env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory" );
env.put("com.sun.jndi.ldap.connect.timeout" , String.valueOf(CONNECT_MILLIS));
try (TestServer server = new BindableButNotReadableServer()) {
env.put(Context.PROVIDER_URL, urlTo(server));
server.start();
server.starting().join();
InitialDirContext ctx = new InitialDirContext(env);
SearchControls scl = new SearchControls();
scl.setSearchScope(SearchControls.SUBTREE_SCOPE);
assertIncompletion(INFINITY_MILLIS,
() -> ctx.search("ou=People,o=JNDITutorial" , "(objectClass=*)" , scl));
}
}
static void test3() throws Exception {
Hashtable<Object, Object> env = new Hashtable<>();
env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory" );
try (TestServer server = new BindableButNotReadableServer()) {
env.put(Context.PROVIDER_URL, urlTo(server));
server.start();
server.starting().join();
InitialDirContext ctx = new InitialDirContext(env);
SearchControls scl = new SearchControls();
scl.setSearchScope(SearchControls.SUBTREE_SCOPE);
assertIncompletion(INFINITY_MILLIS,
() -> ctx.search("ou=People,o=JNDITutorial" , "(objectClass=*)" , scl));
}
}
static void test4() throws Exception {
Hashtable<Object, Object> env = new Hashtable<>();
env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory" );
env.put("com.sun.jndi.ldap.connect.timeout" , String.valueOf(CONNECT_MILLIS));
env.put("com.sun.jndi.ldap.read.timeout" , String.valueOf(READ_MILLIS));
try (TestServer server = new NotBindableServer()) {
env.put(Context.PROVIDER_URL, urlTo(server));
server.start();
server.starting().join();
Assert .ThrowingRunnable completion =
() -> assertCompletion(CONNECT_MILLIS,
2 * CONNECT_MILLIS + TOLERANCE,
() -> new InitialDirContext(env));
NamingException e = expectThrows(NamingException.class , completion);
String msg = e.getMessage();
assertTrue(msg != null && msg.contains("timeout" )
&& msg.contains(String.valueOf(CONNECT_MILLIS)),
msg);
}
}
static void test5() throws Exception {
Hashtable<Object, Object> env = new Hashtable<>();
env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory" );
env.put("com.sun.jndi.ldap.connect.timeout" , String.valueOf(CONNECT_MILLIS));
env.put("com.sun.jndi.ldap.read.timeout" , String.valueOf(READ_MILLIS));
try (TestServer server = new BindableButNotReadableServer()) {
env.put(Context.PROVIDER_URL, urlTo(server));
server.start();
server.starting().join();
InitialDirContext ctx = new InitialDirContext(env);
SearchControls scl = new SearchControls();
scl.setSearchScope(SearchControls.SUBTREE_SCOPE);
Assert .ThrowingRunnable completion =
() -> assertCompletion(READ_MILLIS,
READ_MILLIS + TOLERANCE,
() -> ctx.search("ou=People,o=JNDITutorial" , "(objectClass=*)" , scl));
NamingException e = expectThrows(NamingException.class , completion);
String msg = e.getMessage();
assertTrue(msg != null && msg.contains("timeout" )
&& msg.contains(String.valueOf(READ_MILLIS)),
msg);
}
}
static void test6() throws Exception {
Hashtable<Object, Object> env = new Hashtable<>();
env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory" );
env.put("com.sun.jndi.ldap.connect.timeout" , String.valueOf(CONNECT_MILLIS));
env.put("com.sun.jndi.ldap.read.timeout" , String.valueOf(READ_MILLIS));
try (TestServer server = new NotBindableServer()) {
env.put(Context.PROVIDER_URL, urlTo(server));
server.start();
server.starting().join();
Assert .ThrowingRunnable completion =
() -> assertCompletion(CONNECT_MILLIS,
2 * CONNECT_MILLIS + TOLERANCE,
() -> new InitialDirContext(env));
NamingException e = expectThrows(NamingException.class , completion);
String msg = e.getMessage();
assertTrue(msg != null && msg.contains("timeout" )
&& msg.contains(String.valueOf(CONNECT_MILLIS)),
msg);
}
}
static void test7() throws Exception {
// 8000487: Java JNDI connection library on ldap conn is
// not honoring configured timeout
Hashtable<Object, Object> env = new Hashtable<>();
env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory" );
env.put("com.sun.jndi.ldap.connect.timeout" , String.valueOf(CONNECT_MILLIS));
env.put("com.sun.jndi.ldap.read.timeout" , String.valueOf(READ_MILLIS));
env.put(Context.SECURITY_AUTHENTICATION, "simple" );
env.put(Context.SECURITY_PRINCIPAL, "user" );
env.put(Context.SECURITY_CREDENTIALS, "password" );
try (TestServer server = new NotBindableServer()) {
env.put(Context.PROVIDER_URL, urlTo(server));
server.start();
server.starting().join();
Assert .ThrowingRunnable completion =
() -> assertCompletion(CONNECT_MILLIS,
2 * CONNECT_MILLIS + TOLERANCE,
() -> new InitialDirContext(env));
NamingException e = expectThrows(NamingException.class , completion);
String msg = e.getMessage();
assertTrue(msg != null && msg.contains("timeout" )
&& msg.contains(String.valueOf(CONNECT_MILLIS)),
msg);
}
}
// ------ test stub servers ------
static class TestServer extends BaseLdapServer {
private final CompletableFuture<Void > starting = new CompletableFuture<>();
TestServer() throws IOException { }
@Override
protected void beforeAcceptingConnections() {
starting.completeAsync(() -> null );
}
public CompletableFuture<Void > starting() {
return starting.copy();
}
}
static class BindableButNotReadableServer extends TestServer {
BindableButNotReadableServer() throws IOException { }
private static final byte [] bindResponse = {
0 x30, 0 x0C, 0 x02, 0 x01, 0 x01, 0 x61, 0 x07, 0 x0A,
0 x01, 0 x00, 0 x04, 0 x00, 0 x04, 0 x00
};
@Override
protected void handleRequest(Socket socket,
LdapMessage msg,
OutputStream out)
throws IOException {
switch (msg.getOperation()) {
case BIND_REQUEST:
out.write(bindResponse);
out.flush();
default :
break ;
}
}
}
static class NotBindableServer extends TestServer {
NotBindableServer() throws IOException { }
@Override
protected void beforeConnectionHandled(Socket socket) {
try {
TimeUnit.DAYS.sleep(Integer.MAX_VALUE);
} catch (InterruptedException e) {
Thread .currentThread().interrupt();
}
}
}
// ------ timeouts check utilities ------
/*
* Asserts that the specified executable yields a result or an exception
* within the specified time frame . Interrupts the executable
* unconditionally .
*
* If the executable yields a result or an exception within the specified
* time frame , the result will be returned and the exception will be
* rethrown respectively in a transparent fashion as if the executable was
* executed directly .
*/
public static <T> T assertCompletion(long loMillis,
long hiMillis,
Callable<T> code)
throws Throwable {
if (loMillis < 0 || hiMillis < 0 || loMillis > hiMillis) {
throw new IllegalArgumentException("loMillis=" + loMillis +
", hiMillis=" + hiMillis);
}
Objects.requireNonNull(code);
// this queue acts both as an exchange point and a barrier
SynchronousQueue<Long > startTime = new SynchronousQueue<>();
Callable<T> wrappedTask = () -> {
// by the time this value reaches the "stopwatch" thread it might be
// well outdated and that's okay, we will adjust the wait time
startTime.put(System.nanoTime());
return code.call();
};
FutureTask<T> task = new FutureTask<>(wrappedTask);
Thread t = new Thread (task);
t.start();
final long startNanos;
try {
startNanos = startTime.take(); // (1) wait for the initial time mark
} catch (Throwable e) {
t.interrupt();
throw e;
}
final long waitTime = hiMillis -
NANOSECONDS.toMillis(System.nanoTime() - startNanos); // (2) adjust wait time
try {
T r = task.get(waitTime, MILLISECONDS); // (3) wait for the task to complete
long elapsed = NANOSECONDS.toMillis(System.nanoTime() - startNanos);
if (elapsed < loMillis || elapsed > hiMillis) {
throw new RuntimeException(format(
"After %s ms. (waitTime %s ms.) returned result '%s'" , elapsed, waitTime, r));
}
return r;
} catch (ExecutionException e) {
long elapsed = NANOSECONDS.toMillis(System.nanoTime() - startNanos);
if (elapsed < loMillis || elapsed > hiMillis) {
throw new RuntimeException(format(
"After %s ms. (waitTime %s ms.) thrown exception" , elapsed, waitTime), e);
}
throw e.getCause();
} catch (TimeoutException e) {
// We trust timed get not to throw TimeoutException prematurely
// (i.e. before the wait time elapses)
long elapsed = NANOSECONDS.toMillis(System.nanoTime() - startNanos);
throw new RuntimeException(format(
"After %s ms. (waitTime %s ms.) is incomplete" , elapsed, waitTime));
} finally {
t.interrupt();
}
}
/*
* Asserts that the specified executable yields no result and no exception
* for at least the specified amount of time . Interrupts the executable
* unconditionally .
*/
public static void assertIncompletion(long millis, Callable<?> code)
throws Exception
{
if (millis < 0 ) {
throw new IllegalArgumentException("millis=" + millis);
}
Objects.requireNonNull(code);
// this queue acts both as an exchange point and a barrier
SynchronousQueue<Long > startTime = new SynchronousQueue<>();
Callable<?> wrappedTask = () -> {
// by the time this value reaches the "stopwatch" thread it might be
// well outdated and that's okay, we will adjust the wait time
startTime.put(System.nanoTime());
return code.call();
};
FutureTask<?> task = new FutureTask<>(wrappedTask);
Thread t = new Thread (task);
t.start();
final long startNanos;
try {
startNanos = startTime.take(); // (1) wait for the initial time mark
} catch (Throwable e) {
t.interrupt();
throw e;
}
final long waitTime = millis -
NANOSECONDS.toMillis(System.nanoTime() - startNanos); // (2) adjust wait time
try {
Object r = task.get(waitTime, MILLISECONDS); // (3) wait for the task to complete
long elapsed = NANOSECONDS.toMillis(System.nanoTime() - startNanos);
if (elapsed < waitTime) {
throw new RuntimeException(format(
"After %s ms. (waitTime %s ms.) returned result '%s'" , elapsed, waitTime, r));
}
} catch (ExecutionException e) {
long elapsed = NANOSECONDS.toMillis(System.nanoTime() - startNanos);
if (elapsed < waitTime) {
throw new RuntimeException(format(
"After %s ms. (waitTime %s ms.) thrown exception" , elapsed, waitTime), e);
}
} catch (TimeoutException expected) {
} finally {
t.interrupt();
}
}
// ------ miscellaneous utilities ------
private static String urlTo(TestServer server) {
String hostAddress = server.getInetAddress().getHostAddress();
String addr;
if (hostAddress.contains(":" )) { // IPv6
addr = '[' + hostAddress + ']' ;
} else { // IPv4
addr = hostAddress;
}
return "ldap://" + addr + ":" + server.getPort();
}
/*
* A diagnostic aid that might help with debugging timeout issues . The idea
* is to continuously measure accuracy and responsiveness of the system that
* runs this test . If the system is overwhelmed ( with something else ) , it
* might affect the test run . At the very least we will have traces of that
* in the logs .
*
* This utility does not automatically scale up test timeouts , it simply
* gathers information .
*/
private static void startAuxiliaryDiagnosticOutput() {
System.out.printf("Starting diagnostic output (probe)%n" );
Thread t = new Thread (() -> {
for (int i = 0 ; ; i = ((i % 20 ) + 1 )) {
// 500, 1_000, 1_500, ..., 9_500, 10_000, 500, 1_000, ...
long expected = i * 500 ;
long start = System.nanoTime();
try {
MILLISECONDS.sleep(expected);
} catch (InterruptedException e) {
return ;
}
long stop = System.nanoTime();
long actual = NANOSECONDS.toMillis(stop - start);
System.out.printf("(probe) expected [ms.]: %s, actual [ms.]: %s%n" ,
expected, actual);
}
}, "probe" );
t.setDaemon(true );
t.start();
}
}
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