/*
* Copyright 2012-2016 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.boot.devtools.tunnel.client;
import java.io.ByteArrayOutputStream;
import java.io.Closeable;
import java.io.IOException;
import java.net.ConnectException;
import java.nio.ByteBuffer;
import java.nio.channels.Channels;
import java.nio.channels.WritableByteChannel;
import java.util.concurrent.Executor;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
import org.springframework.boot.devtools.test.MockClientHttpRequestFactory;
import org.springframework.boot.devtools.tunnel.client.HttpTunnelConnection.TunnelChannel;
import org.springframework.boot.test.rule.OutputCapture;
import org.springframework.http.HttpStatus;
import org.springframework.util.SocketUtils;
import static org.assertj.core.api.Assertions.assertThat;
import static org.hamcrest.Matchers.containsString;
import static org.mockito.Mockito.never;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
/**
* Tests for {@link HttpTunnelConnection}.
*
* @author Phillip Webb
* @author Rob Winch
* @author Andy Wilkinson
*/
public class HttpTunnelConnectionTests {
@Rule
public ExpectedException thrown = ExpectedException.none();
@Rule
public OutputCapture outputCapture = new OutputCapture();
private int port = SocketUtils.findAvailableTcpPort();
private String url;
private ByteArrayOutputStream incomingData;
private WritableByteChannel incomingChannel;
@Mock
private Closeable closeable;
private MockClientHttpRequestFactory requestFactory = new MockClientHttpRequestFactory();
@Before
public void setup() {
MockitoAnnotations.initMocks(this);
this.url = "http://localhost:" + this.port;
this.incomingData = new ByteArrayOutputStream();
this.incomingChannel = Channels.newChannel(this.incomingData);
}
@Test
public void urlMustNotBeNull() throws Exception {
this.thrown.expect(IllegalArgumentException.class);
this.thrown.expectMessage("URL must not be empty");
new HttpTunnelConnection(null, this.requestFactory);
}
@Test
public void urlMustNotBeEmpty() throws Exception {
this.thrown.expect(IllegalArgumentException.class);
this.thrown.expectMessage("URL must not be empty");
new HttpTunnelConnection("", this.requestFactory);
}
@Test
public void urlMustNotBeMalformed() throws Exception {
this.thrown.expect(IllegalArgumentException.class);
this.thrown.expectMessage("Malformed URL 'htttttp:///ttest'");
new HttpTunnelConnection("htttttp:///ttest", this.requestFactory);
}
@Test
public void requestFactoryMustNotBeNull() {
this.thrown.expect(IllegalArgumentException.class);
this.thrown.expectMessage("RequestFactory must not be null");
new HttpTunnelConnection(this.url, null);
}
@Test
public void closeTunnelChangesIsOpen() throws Exception {
this.requestFactory.willRespondAfterDelay(1000, HttpStatus.GONE);
WritableByteChannel channel = openTunnel(false);
assertThat(channel.isOpen()).isTrue();
channel.close();
assertThat(channel.isOpen()).isFalse();
}
@Test
public void closeTunnelCallsCloseableOnce() throws Exception {
this.requestFactory.willRespondAfterDelay(1000, HttpStatus.GONE);
WritableByteChannel channel = openTunnel(false);
verify(this.closeable, never()).close();
channel.close();
channel.close();
verify(this.closeable, times(1)).close();
}
@Test
public void typicalTraffic() throws Exception {
this.requestFactory.willRespond("hi", "=2", "=3");
TunnelChannel channel = openTunnel(true);
write(channel, "hello");
write(channel, "1+1");
write(channel, "1+2");
assertThat(this.incomingData.toString()).isEqualTo("hi=2=3");
}
@Test
public void trafficWithLongPollTimeouts() throws Exception {
for (int i = 0; i < 10; i++) {
this.requestFactory.willRespond(HttpStatus.NO_CONTENT);
}
this.requestFactory.willRespond("hi");
TunnelChannel channel = openTunnel(true);
write(channel, "hello");
assertThat(this.incomingData.toString()).isEqualTo("hi");
assertThat(this.requestFactory.getExecutedRequests().size()).isGreaterThan(10);
}
@Test
public void serviceUnavailableResponseLogsWarningAndClosesTunnel() throws Exception {
this.requestFactory.willRespond(HttpStatus.SERVICE_UNAVAILABLE);
TunnelChannel tunnel = openTunnel(true);
assertThat(tunnel.isOpen()).isFalse();
this.outputCapture.expect(containsString(
"Did you forget to start it with remote debugging enabled?"));
}
@Test
public void connectFailureLogsWarning() throws Exception {
this.requestFactory.willRespond(new ConnectException());
TunnelChannel tunnel = openTunnel(true);
assertThat(tunnel.isOpen()).isFalse();
this.outputCapture.expect(containsString(
"Failed to connect to remote application at http://localhost:"
+ this.port));
}
private void write(TunnelChannel channel, String string) throws IOException {
channel.write(ByteBuffer.wrap(string.getBytes()));
}
private TunnelChannel openTunnel(boolean singleThreaded) throws Exception {
HttpTunnelConnection connection = new HttpTunnelConnection(this.url,
this.requestFactory,
(singleThreaded ? new CurrentThreadExecutor() : null));
return connection.open(this.incomingChannel, this.closeable);
}
private static class CurrentThreadExecutor implements Executor {
@Override
public void execute(Runnable command) {
command.run();
}
}
}