/*
* Copyright 2002-2014 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.web.socket.sockjs.client;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URI;
import java.nio.charset.Charset;
import java.util.Arrays;
import java.util.Queue;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.LinkedBlockingDeque;
import org.junit.Before;
import org.junit.Test;
import org.springframework.core.task.SyncTaskExecutor;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpMethod;
import org.springframework.http.HttpStatus;
import org.springframework.http.client.ClientHttpResponse;
import org.springframework.messaging.Message;
import org.springframework.messaging.MessageHeaders;
import org.springframework.messaging.simp.stomp.StompCommand;
import org.springframework.messaging.simp.stomp.StompEncoder;
import org.springframework.messaging.simp.stomp.StompHeaderAccessor;
import org.springframework.messaging.support.MessageBuilder;
import org.springframework.util.concurrent.ListenableFuture;
import org.springframework.util.concurrent.ListenableFutureCallback;
import org.springframework.web.client.HttpServerErrorException;
import org.springframework.web.client.RequestCallback;
import org.springframework.web.client.ResponseExtractor;
import org.springframework.web.client.RestClientException;
import org.springframework.web.client.RestOperations;
import org.springframework.web.client.RestTemplate;
import org.springframework.web.socket.CloseStatus;
import org.springframework.web.socket.TextMessage;
import org.springframework.web.socket.WebSocketHandler;
import org.springframework.web.socket.WebSocketSession;
import org.springframework.web.socket.sockjs.frame.Jackson2SockJsMessageCodec;
import org.springframework.web.socket.sockjs.frame.SockJsFrame;
import org.springframework.web.socket.sockjs.transport.TransportType;
import static org.mockito.BDDMockito.*;
/**
* Unit tests for {@link RestTemplateXhrTransport}.
*
* @author Rossen Stoyanchev
*/
public class RestTemplateXhrTransportTests {
private static final Jackson2SockJsMessageCodec CODEC = new Jackson2SockJsMessageCodec();
private WebSocketHandler webSocketHandler;
@Before
public void setup() throws Exception {
this.webSocketHandler = mock(WebSocketHandler.class);
}
@Test
public void connectReceiveAndClose() throws Exception {
String body = "o\n" + "a[\"foo\"]\n" + "c[3000,\"Go away!\"]";
ClientHttpResponse response = response(HttpStatus.OK, body);
connect(response);
verify(this.webSocketHandler).afterConnectionEstablished(any());
verify(this.webSocketHandler).handleMessage(any(), eq(new TextMessage("foo")));
verify(this.webSocketHandler).afterConnectionClosed(any(), eq(new CloseStatus(3000, "Go away!")));
verifyNoMoreInteractions(this.webSocketHandler);
}
@Test
public void connectReceiveAndCloseWithPrelude() throws Exception {
StringBuilder sb = new StringBuilder(2048);
for (int i=0; i < 2048; i++) {
sb.append('h');
}
String body = sb.toString() + "\n" + "o\n" + "a[\"foo\"]\n" + "c[3000,\"Go away!\"]";
ClientHttpResponse response = response(HttpStatus.OK, body);
connect(response);
verify(this.webSocketHandler).afterConnectionEstablished(any());
verify(this.webSocketHandler).handleMessage(any(), eq(new TextMessage("foo")));
verify(this.webSocketHandler).afterConnectionClosed(any(), eq(new CloseStatus(3000, "Go away!")));
verifyNoMoreInteractions(this.webSocketHandler);
}
@Test
public void connectReceiveAndCloseWithStompFrame() throws Exception {
StompHeaderAccessor accessor = StompHeaderAccessor.create(StompCommand.SEND);
accessor.setDestination("/destination");
MessageHeaders headers = accessor.getMessageHeaders();
Message<byte[]> message = MessageBuilder.createMessage("body".getBytes(Charset.forName("UTF-8")), headers);
byte[] bytes = new StompEncoder().encode(message);
TextMessage textMessage = new TextMessage(bytes);
SockJsFrame frame = SockJsFrame.messageFrame(new Jackson2SockJsMessageCodec(), textMessage.getPayload());
String body = "o\n" + frame.getContent() + "\n" + "c[3000,\"Go away!\"]";
ClientHttpResponse response = response(HttpStatus.OK, body);
connect(response);
verify(this.webSocketHandler).afterConnectionEstablished(any());
verify(this.webSocketHandler).handleMessage(any(), eq(textMessage));
verify(this.webSocketHandler).afterConnectionClosed(any(), eq(new CloseStatus(3000, "Go away!")));
verifyNoMoreInteractions(this.webSocketHandler);
}
@Test
public void connectFailure() throws Exception {
final HttpServerErrorException expected = new HttpServerErrorException(HttpStatus.INTERNAL_SERVER_ERROR);
RestOperations restTemplate = mock(RestOperations.class);
given(restTemplate.execute((URI) any(), eq(HttpMethod.POST), any(), any())).willThrow(expected);
final CountDownLatch latch = new CountDownLatch(1);
connect(restTemplate).addCallback(
new ListenableFutureCallback<WebSocketSession>() {
@Override
public void onSuccess(WebSocketSession result) {
}
@Override
public void onFailure(Throwable ex) {
if (ex == expected) {
latch.countDown();
}
}
}
);
verifyNoMoreInteractions(this.webSocketHandler);
}
@Test
public void errorResponseStatus() throws Exception {
connect(response(HttpStatus.OK, "o\n"), response(HttpStatus.INTERNAL_SERVER_ERROR, "Oops"));
verify(this.webSocketHandler).afterConnectionEstablished(any());
verify(this.webSocketHandler).handleTransportError(any(), any());
verify(this.webSocketHandler).afterConnectionClosed(any(), any());
verifyNoMoreInteractions(this.webSocketHandler);
}
@Test
public void responseClosedAfterDisconnected() throws Exception {
String body = "o\n" + "c[3000,\"Go away!\"]\n" + "a[\"foo\"]\n";
ClientHttpResponse response = response(HttpStatus.OK, body);
connect(response);
verify(this.webSocketHandler).afterConnectionEstablished(any());
verify(this.webSocketHandler).afterConnectionClosed(any(), any());
verifyNoMoreInteractions(this.webSocketHandler);
verify(response).close();
}
private ListenableFuture<WebSocketSession> connect(ClientHttpResponse... responses) throws Exception {
return connect(new TestRestTemplate(responses));
}
private ListenableFuture<WebSocketSession> connect(RestOperations restTemplate, ClientHttpResponse... responses)
throws Exception {
RestTemplateXhrTransport transport = new RestTemplateXhrTransport(restTemplate);
transport.setTaskExecutor(new SyncTaskExecutor());
SockJsUrlInfo urlInfo = new SockJsUrlInfo(new URI("http://example.com"));
HttpHeaders headers = new HttpHeaders();
headers.add("h-foo", "h-bar");
TransportRequest request = new DefaultTransportRequest(urlInfo, headers, transport, TransportType.XHR, CODEC);
return transport.connect(request, this.webSocketHandler);
}
private ClientHttpResponse response(HttpStatus status, String body) throws IOException {
ClientHttpResponse response = mock(ClientHttpResponse.class);
InputStream inputStream = getInputStream(body);
given(response.getStatusCode()).willReturn(status);
given(response.getBody()).willReturn(inputStream);
return response;
}
private InputStream getInputStream(String content) {
byte[] bytes = content.getBytes(Charset.forName("UTF-8"));
return new ByteArrayInputStream(bytes);
}
private static class TestRestTemplate extends RestTemplate {
private Queue<ClientHttpResponse> responses = new LinkedBlockingDeque<>();
private TestRestTemplate(ClientHttpResponse... responses) {
this.responses.addAll(Arrays.asList(responses));
}
@Override
public <T> T execute(URI url, HttpMethod method, RequestCallback callback, ResponseExtractor<T> extractor) throws RestClientException {
try {
extractor.extractData(this.responses.remove());
}
catch (Throwable t) {
throw new RestClientException("Failed to invoke extractor", t);
}
return null;
}
}
}