/
IOTest.java
605 lines (498 loc) · 21.2 KB
/
IOTest.java
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//
// ========================================================================
// Copyright (c) 1995-2021 Mort Bay Consulting Pty Ltd and others.
//
// This program and the accompanying materials are made available under the
// terms of the Eclipse Public License v. 2.0 which is available at
// https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0
// which is available at https://www.apache.org/licenses/LICENSE-2.0.
//
// SPDX-License-Identifier: EPL-2.0 OR Apache-2.0
// ========================================================================
//
package org.eclipse.jetty.io;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.SocketException;
import java.nio.ByteBuffer;
import java.nio.channels.AsynchronousServerSocketChannel;
import java.nio.channels.AsynchronousSocketChannel;
import java.nio.channels.FileChannel;
import java.nio.channels.SelectionKey;
import java.nio.channels.Selector;
import java.nio.channels.ServerSocketChannel;
import java.nio.channels.SocketChannel;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.StandardOpenOption;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import org.eclipse.jetty.toolchain.test.FS;
import org.eclipse.jetty.toolchain.test.MavenTestingUtils;
import org.eclipse.jetty.toolchain.test.jupiter.WorkDir;
import org.eclipse.jetty.toolchain.test.jupiter.WorkDirExtension;
import org.eclipse.jetty.util.BufferUtil;
import org.eclipse.jetty.util.IO;
import org.eclipse.jetty.util.resource.PathResource;
import org.eclipse.jetty.util.resource.Resource;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.TestInfo;
import org.junit.jupiter.api.condition.OS;
import org.junit.jupiter.api.extension.ExtendWith;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.is;
import static org.hamcrest.Matchers.notNullValue;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.junit.jupiter.api.Assertions.assertTrue;
@ExtendWith(WorkDirExtension.class)
public class IOTest
{
public WorkDir workDir;
@Test
public void testIO() throws Exception
{
// Only a little test
ByteArrayInputStream in = new ByteArrayInputStream("The quick brown fox jumped over the lazy dog".getBytes());
ByteArrayOutputStream out = new ByteArrayOutputStream();
IO.copy(in, out);
assertEquals(out.toString(), "The quick brown fox jumped over the lazy dog", "copyThread");
}
@Test
public void testHalfClose() throws Exception
{
try (ServerSocket connector = new ServerSocket(0);
Socket client = new Socket("localhost", connector.getLocalPort());
Socket server = connector.accept())
{
// we can write both ways
client.getOutputStream().write(1);
assertEquals(1, server.getInputStream().read());
server.getOutputStream().write(1);
assertEquals(1, client.getInputStream().read());
// shutdown output results in read -1
client.shutdownOutput();
assertEquals(-1, server.getInputStream().read());
// Even though EOF has been read, the server input is not seen as shutdown
assertFalse(server.isInputShutdown());
// and we can read -1 again
assertEquals(-1, server.getInputStream().read());
// but cannot write
Assertions.assertThrows(SocketException.class, () -> client.getOutputStream().write(1));
// but can still write in opposite direction.
server.getOutputStream().write(1);
assertEquals(1, client.getInputStream().read());
// server can shutdown input to match the shutdown out of client
server.shutdownInput();
// now we EOF instead of reading -1
Assertions.assertThrows(SocketException.class, () -> server.getInputStream().read());
// but can still write in opposite direction.
server.getOutputStream().write(1);
assertEquals(1, client.getInputStream().read());
// client can shutdown input
client.shutdownInput();
// now we EOF instead of reading -1
Assertions.assertThrows(SocketException.class, () -> client.getInputStream().read());
// But we can still write at the server (data which will never be read)
server.getOutputStream().write(1);
// and the server output is not shutdown
assertFalse(server.isOutputShutdown());
// until we explicitly shut it down
server.shutdownOutput();
// and now we can't write
Assertions.assertThrows(SocketException.class, () -> server.getOutputStream().write(1));
// but the sockets are still open
assertFalse(client.isClosed());
assertFalse(server.isClosed());
// but if we close one end
client.close();
// it is seen as closed.
assertTrue(client.isClosed());
// but not the other end
assertFalse(server.isClosed());
// which has to be closed explicitly
server.close();
assertTrue(server.isClosed());
}
}
@Test
public void testHalfCloseClientServer() throws Exception
{
try (ServerSocketChannel connector = ServerSocketChannel.open())
{
connector.socket().bind(null);
try (Socket client = SocketChannel.open(connector.socket().getLocalSocketAddress()).socket())
{
client.setSoTimeout(1000);
try (Socket server = connector.accept().socket())
{
server.setSoTimeout(1000);
// Write from client to server
client.getOutputStream().write(1);
// Server reads
assertEquals(1, server.getInputStream().read());
// Write from server to client with oshut
server.getOutputStream().write(1);
// System.err.println("OSHUT "+server);
server.shutdownOutput();
// Client reads response
assertEquals(1, client.getInputStream().read());
try
{
// Client reads -1 and does ishut
assertEquals(-1, client.getInputStream().read());
assertFalse(client.isInputShutdown());
//System.err.println("ISHUT "+client);
client.shutdownInput();
// Client ???
//System.err.println("OSHUT "+client);
client.shutdownOutput();
//System.err.println("CLOSE "+client);
client.close();
// Server reads -1, does ishut and then close
assertEquals(-1, server.getInputStream().read());
assertFalse(server.isInputShutdown());
//System.err.println("ISHUT "+server);
server.shutdownInput();
server.close();
}
catch (Exception e)
{
e.printStackTrace();
assertTrue(OS.MAC.isCurrentOs());
}
}
}
}
}
@Test
public void testHalfCloseBadClient() throws Exception
{
try (ServerSocketChannel connector = ServerSocketChannel.open())
{
connector.socket().bind(null);
try (Socket client = SocketChannel.open(connector.socket().getLocalSocketAddress()).socket())
{
client.setSoTimeout(1000);
try (Socket server = connector.accept().socket())
{
server.setSoTimeout(1000);
// Write from client to server
client.getOutputStream().write(1);
// Server reads
assertEquals(1, server.getInputStream().read());
// Write from server to client with oshut
server.getOutputStream().write(1);
//System.err.println("OSHUT "+server);
server.shutdownOutput();
// Client reads response
assertEquals(1, client.getInputStream().read());
// Client reads -1
assertEquals(-1, client.getInputStream().read());
assertFalse(client.isInputShutdown());
// Client can still write as we are half closed
client.getOutputStream().write(1);
// Server can still read
assertEquals(1, server.getInputStream().read());
// Server now closes
server.close();
// Client still reads -1 (not broken pipe !!)
assertEquals(-1, client.getInputStream().read());
assertFalse(client.isInputShutdown());
Thread.sleep(100);
// Client still reads -1 (not broken pipe !!)
assertEquals(-1, client.getInputStream().read());
assertFalse(client.isInputShutdown());
// Client can still write data even though server is closed???
client.getOutputStream().write(1);
// Client eventually sees Broken Pipe
assertThrows(IOException.class, () ->
{
int i = 0;
for (i = 0; i < 100000; i++)
{
client.getOutputStream().write(1);
}
});
}
}
}
}
@Test
public void testServerChannelInterrupt() throws Exception
{
try (ServerSocketChannel connector = ServerSocketChannel.open())
{
connector.configureBlocking(true);
connector.socket().bind(null);
try (Socket client = SocketChannel.open(connector.socket().getLocalSocketAddress()).socket())
{
client.setSoTimeout(2000);
try (Socket server = connector.accept().socket())
{
server.setSoTimeout(2000);
// Write from client to server
client.getOutputStream().write(1);
// Server reads
assertEquals(1, server.getInputStream().read());
// Write from server to client
server.getOutputStream().write(1);
// Client reads
assertEquals(1, client.getInputStream().read());
// block a thread in accept
final CountDownLatch latch = new CountDownLatch(2);
Thread acceptor = new Thread(() ->
{
try
{
latch.countDown();
connector.accept();
}
catch (Throwable ignored)
{
}
finally
{
latch.countDown();
}
});
acceptor.start();
while (latch.getCount() == 2)
{
Thread.sleep(10);
}
// interrupt the acceptor
acceptor.interrupt();
// wait for acceptor to exit
assertTrue(latch.await(10, TimeUnit.SECONDS));
// connector is closed
assertFalse(connector.isOpen());
// but connection is still open
assertFalse(client.isClosed());
assertFalse(server.isClosed());
// Write from client to server
client.getOutputStream().write(42);
// Server reads
assertEquals(42, server.getInputStream().read());
// Write from server to client
server.getOutputStream().write(43);
// Client reads
assertEquals(43, client.getInputStream().read());
}
}
}
}
@Test
public void testReset() throws Exception
{
try (ServerSocket connector = new ServerSocket(0);
Socket client = new Socket("127.0.0.1", connector.getLocalPort());
Socket server = connector.accept())
{
client.setTcpNoDelay(true);
client.setSoLinger(true, 0);
server.setTcpNoDelay(true);
server.setSoLinger(true, 0);
client.getOutputStream().write(1);
assertEquals(1, server.getInputStream().read());
server.getOutputStream().write(1);
assertEquals(1, client.getInputStream().read());
// Server generator shutdowns output after non persistent sending response.
server.shutdownOutput();
// client endpoint reads EOF and shutdown input as result
assertEquals(-1, client.getInputStream().read());
client.shutdownInput();
// client connection see's EOF and shutsdown output as no more requests to be sent.
client.shutdownOutput();
// Since input already shutdown, client also closes socket.
client.close();
// Server reads the EOF from client oshut and shut's down it's input
assertEquals(-1, server.getInputStream().read());
server.shutdownInput();
// Since output was already shutdown, server
// closes in the try-with-resources block end.
}
}
@Test
public void testAsyncSocketChannel() throws Exception
{
AsynchronousServerSocketChannel connector = AsynchronousServerSocketChannel.open();
connector.bind(null);
InetSocketAddress addr = (InetSocketAddress)connector.getLocalAddress();
Future<AsynchronousSocketChannel> acceptor = connector.accept();
AsynchronousSocketChannel client = AsynchronousSocketChannel.open();
client.connect(new InetSocketAddress("127.0.0.1", addr.getPort())).get(5, TimeUnit.SECONDS);
AsynchronousSocketChannel server = acceptor.get(5, TimeUnit.SECONDS);
ByteBuffer read = ByteBuffer.allocate(1024);
Future<Integer> reading = server.read(read);
byte[] data = "Testing 1 2 3".getBytes(StandardCharsets.UTF_8);
ByteBuffer write = BufferUtil.toBuffer(data);
Future<Integer> writing = client.write(write);
writing.get(5, TimeUnit.SECONDS);
reading.get(5, TimeUnit.SECONDS);
read.flip();
assertEquals(ByteBuffer.wrap(data), read);
}
@Test
public void testGatherWrite() throws Exception
{
Path dir = workDir.getEmptyPathDir();
Path file = Files.createTempFile(dir, "test", ".txt");
FileChannel out = FileChannel.open(file,
StandardOpenOption.CREATE,
StandardOpenOption.READ,
StandardOpenOption.WRITE,
StandardOpenOption.DELETE_ON_CLOSE);
ByteBuffer[] buffers = new ByteBuffer[4096];
long expected = 0;
for (int i = 0; i < buffers.length; i++)
{
buffers[i] = BufferUtil.toBuffer(i);
expected += buffers[i].remaining();
}
long wrote = IO.write(out, buffers, 0, buffers.length);
assertEquals(expected, wrote);
for (ByteBuffer buffer : buffers)
{
assertEquals(0, buffer.remaining());
}
}
@Test
public void testDeleteNull()
{
assertFalse(IO.delete(null));
}
@Test
public void testDeleteNonExistentFile(TestInfo testInfo)
{
File dir = MavenTestingUtils.getTargetTestingDir(testInfo.getDisplayName());
FS.ensureEmpty(dir);
File noFile = new File(dir, "nada");
assertFalse(IO.delete(noFile));
}
@Test
public void testIsEmptyNull()
{
assertTrue(IO.isEmptyDir(null));
}
@Test
public void testIsEmptyDoesNotExist(TestInfo testInfo)
{
File dir = MavenTestingUtils.getTargetTestingDir(testInfo.getDisplayName());
FS.ensureEmpty(dir);
File noFile = new File(dir, "nada");
assertTrue(IO.isEmptyDir(noFile));
}
@Test
public void testIsEmptyExistButAsFile(TestInfo testInfo) throws IOException
{
File dir = MavenTestingUtils.getTargetTestingDir(testInfo.getDisplayName());
FS.ensureEmpty(dir);
File file = new File(dir, "nada");
FS.touch(file);
assertFalse(IO.isEmptyDir(file));
}
@Test
public void testIsEmptyExistAndIsEmpty(TestInfo testInfo)
{
File dir = MavenTestingUtils.getTargetTestingDir(testInfo.getDisplayName());
FS.ensureEmpty(dir);
assertTrue(IO.isEmptyDir(dir));
}
@Test
public void testIsEmptyExistAndHasContent(TestInfo testInfo) throws IOException
{
File dir = MavenTestingUtils.getTargetTestingDir(testInfo.getDisplayName());
FS.ensureEmpty(dir);
File file = new File(dir, "nada");
FS.touch(file);
assertFalse(IO.isEmptyDir(dir));
}
@Test
public void testSelectorWakeup() throws Exception
{
try (ServerSocketChannel connector = ServerSocketChannel.open())
{
connector.bind(null);
InetSocketAddress addr = (InetSocketAddress)connector.getLocalAddress();
try (SocketChannel client = SocketChannel.open(new InetSocketAddress("127.0.0.1", addr.getPort()));
SocketChannel server = connector.accept())
{
server.configureBlocking(false);
Selector selector = Selector.open();
SelectionKey key = server.register(selector, SelectionKey.OP_READ);
assertThat(key, notNullValue());
assertThat(selector.selectNow(), is(0));
// Test wakeup before select
selector.wakeup();
assertThat(selector.select(), is(0));
// Test wakeup after select
new Thread(() ->
{
try
{
Thread.sleep(100);
selector.wakeup();
}
catch (Exception e)
{
e.printStackTrace();
}
}).start();
assertThat(selector.select(), is(0));
}
}
}
@Test
public void testSymbolicLink(TestInfo testInfo) throws Exception
{
File dir = MavenTestingUtils.getTargetTestingDir(testInfo.getDisplayName());
FS.ensureEmpty(dir);
File realFile = new File(dir, "real");
Path realPath = realFile.toPath();
FS.touch(realFile);
File linkFile = new File(dir, "link");
Path linkPath = linkFile.toPath();
Files.createSymbolicLink(linkPath, realPath);
Path targPath = linkPath.toRealPath();
System.err.printf("realPath = %s%n", realPath);
System.err.printf("linkPath = %s%n", linkPath);
System.err.printf("targPath = %s%n", targPath);
assertFalse(Files.isSymbolicLink(realPath));
assertTrue(Files.isSymbolicLink(linkPath));
Resource link = new PathResource(dir).addPath("link");
assertThat(link.isAlias(), is(true));
}
@Test
public void testSymbolicLinkDir(TestInfo testInfo) throws Exception
{
File dir = MavenTestingUtils.getTargetTestingDir(testInfo.getDisplayName());
FS.ensureEmpty(dir);
File realDirFile = new File(dir, "real");
Path realDirPath = realDirFile.toPath();
Files.createDirectories(realDirPath);
File linkDirFile = new File(dir, "link");
Path linkDirPath = linkDirFile.toPath();
Files.createSymbolicLink(linkDirPath, realDirPath);
File realFile = new File(realDirFile, "file");
Path realPath = realFile.toPath();
FS.touch(realFile);
File linkFile = new File(linkDirFile, "file");
Path linkPath = linkFile.toPath();
Path targPath = linkPath.toRealPath();
System.err.printf("realPath = %s%n", realPath);
System.err.printf("linkPath = %s%n", linkPath);
System.err.printf("targPath = %s%n", targPath);
assertFalse(Files.isSymbolicLink(realPath));
assertFalse(Files.isSymbolicLink(linkPath));
}
}