1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
|
// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.application.container;
import com.yahoo.api.annotations.Beta;
import com.yahoo.application.container.handler.Request;
import com.yahoo.application.container.handler.Response;
import com.yahoo.jdisc.handler.CompletionHandler;
import com.yahoo.jdisc.handler.ContentChannel;
import com.yahoo.jdisc.handler.RequestDispatch;
import com.yahoo.jdisc.handler.ResponseHandler;
import com.yahoo.jdisc.service.CurrentContainer;
import com.yahoo.jdisc.test.TestDriver;
import java.net.URI;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.concurrent.CountDownLatch;
/**
* @author Einar M R Rosenvinge
*/
@Beta
final class SynchronousRequestResponseHandler {
Response handleRequest(Request request, TestDriver driver) {
BlockingResponseHandler responseHandler = new BlockingResponseHandler();
ContentChannel inputRequestChannel = connectRequest(request, driver, responseHandler);
writeRequestBody(request, inputRequestChannel);
return responseHandler.getResponse();
}
private void writeRequestBody(Request request, ContentChannel inputRequestChannel) {
List<BlockingCompletionHandler> completionHandlers = new ArrayList<>();
if (request.getBody().length > 0) {
BlockingCompletionHandler w = new BlockingCompletionHandler();
try {
inputRequestChannel.write(ByteBuffer.wrap(request.getBody()), w);
completionHandlers.add(w);
} finally {
BlockingCompletionHandler c = new BlockingCompletionHandler();
inputRequestChannel.close(c);
completionHandlers.add(c);
}
} else {
BlockingCompletionHandler c = new BlockingCompletionHandler();
inputRequestChannel.close(c);
completionHandlers.add(c);
}
for (BlockingCompletionHandler completionHandler : completionHandlers) {
completionHandler.waitUntilCompleted();
}
}
private ContentChannel connectRequest(final Request request,
final TestDriver driver,
final ResponseHandler responseHandler) {
RequestDispatch dispatch =
new RequestDispatch() {
@Override
protected com.yahoo.jdisc.Request newRequest() {
return createDiscRequest(request, driver);
}
@Override
public ContentChannel handleResponse(com.yahoo.jdisc.Response response) {
return responseHandler.handleResponse(response);
}
};
return dispatch.connect();
}
private static String getScheme(String uri) {
int colonPos = uri.indexOf(':');
if (colonPos < 0) {
return "";
}
return uri.substring(0, colonPos);
}
private static com.yahoo.jdisc.Request createDiscRequest(Request request, CurrentContainer currentContainer) {
String scheme = getScheme(request.getUri());
com.yahoo.jdisc.Request discRequest;
if ("http".equals(scheme) || "https".equals(scheme)) {
com.yahoo.jdisc.http.HttpRequest httpRequest = com.yahoo.jdisc.http.HttpRequest.newServerRequest(currentContainer,
URI.create(request.getUri()),
com.yahoo.jdisc.http.HttpRequest.Method.valueOf(request.getMethod().name()));
request.getUserPrincipal().ifPresent(httpRequest::setUserPrincipal);
discRequest = httpRequest;
} else {
discRequest = new com.yahoo.jdisc.Request(currentContainer, URI.create(request.getUri()));
}
for (Map.Entry<String, List<String>> entry : request.getHeaders().entrySet()) {
discRequest.headers().add(entry.getKey(), entry.getValue());
}
discRequest.context().putAll(request.getAttributes());
return discRequest;
}
private static byte[] concatenateBuffers(List<ByteBuffer> byteBuffers) {
int totalSize = 0;
for (ByteBuffer responseBuffer : byteBuffers) {
totalSize += responseBuffer.remaining();
}
ByteBuffer totalBuffer = ByteBuffer.allocate(totalSize);
for (ByteBuffer responseBuffer : byteBuffers) {
totalBuffer.put(responseBuffer);
}
return totalBuffer.array();
}
private static void copyResponseHeaders(Response response, com.yahoo.jdisc.Response discResponse) {
for (Map.Entry<String, List<String>> entry : discResponse.headers().entrySet()) {
response.getHeaders().put(entry.getKey(), entry.getValue());
}
}
private static class BlockingResponseHandler implements ResponseHandler, ContentChannel {
private volatile com.yahoo.jdisc.Response discResponse = null;
private CountDownLatch closedLatch = new CountDownLatch(1);
private final List<ByteBuffer> responseBuffers = new ArrayList<>();
@Override
public ContentChannel handleResponse(com.yahoo.jdisc.Response discResponse) {
this.discResponse = discResponse;
return this;
}
public Response getResponse() {
try {
closedLatch.await();
} catch (InterruptedException e) {
throw new ApplicationException(e);
}
byte[] totalBuffer = concatenateBuffers(responseBuffers);
Response response = new Response(discResponse.getStatus(), totalBuffer);
copyResponseHeaders(response, discResponse);
return response;
}
@Override
public void write(ByteBuffer byteBuffer, CompletionHandler completionHandler) {
responseBuffers.add(byteBuffer);
completionHandler.completed();
}
@Override
public void close(CompletionHandler completionHandler) {
completionHandler.completed();
closedLatch.countDown();
}
}
private static class BlockingCompletionHandler implements CompletionHandler {
private volatile Throwable throwable;
private CountDownLatch doneLatch = new CountDownLatch(1);
@Override
public void completed() {
doneLatch.countDown();
}
@Override
public void failed(Throwable t) {
throwable = t;
doneLatch.countDown();
}
public void waitUntilCompleted() {
try {
doneLatch.await();
} catch (InterruptedException e) {
throw new ApplicationException(e);
}
if (throwable != null) {
if (throwable instanceof RuntimeException) {
throw (RuntimeException) throwable;
} else {
throw new RuntimeException(throwable);
}
}
}
}
}
|
