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
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
|
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.tuscany.sca.binding.jsonrpc.provider;
import java.io.IOException;
import java.io.OutputStream;
import java.lang.reflect.Type;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.xml.bind.annotation.adapters.XmlAdapter;
import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;
import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapters;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.ContentProducer;
import org.apache.http.entity.EntityTemplate;
import org.apache.http.entity.StringEntity;
import org.apache.http.util.EntityUtils;
import org.apache.tuscany.sca.assembly.EndpointReference;
import org.apache.tuscany.sca.databinding.json.JSONDataBinding;
import org.apache.tuscany.sca.interfacedef.DataType;
import org.apache.tuscany.sca.interfacedef.Operation;
import org.apache.tuscany.sca.invocation.DataExchangeSemantics;
import org.apache.tuscany.sca.invocation.Invoker;
import org.apache.tuscany.sca.invocation.Message;
import org.codehaus.jackson.map.AnnotationIntrospector;
import org.codehaus.jackson.map.DeserializationConfig;
import org.codehaus.jackson.map.ObjectMapper;
import org.codehaus.jackson.map.deser.CustomDeserializerFactory;
import org.codehaus.jackson.map.deser.StdDeserializerProvider;
import org.codehaus.jackson.map.introspect.JacksonAnnotationIntrospector;
import org.codehaus.jackson.map.ser.CustomSerializerFactory;
import org.codehaus.jackson.map.type.TypeFactory;
import org.codehaus.jackson.xc.JaxbAnnotationIntrospector;
import org.codehaus.jackson.xc.XmlAdapterJsonDeserializer;
import org.codehaus.jackson.xc.XmlAdapterJsonSerializer;
import org.json.JSONException;
import org.json.JSONObject;
import org.oasisopen.sca.ServiceRuntimeException;
/**
* Invoker for the JSONRPC Binding
*
* @version $Rev$ $Date$
*/
public class JSONRPCBindingInvoker implements Invoker, DataExchangeSemantics {
private EndpointReference endpointReference;
private Operation operation;
private String uri;
private ObjectMapper mapper;
private HttpClient httpClient;
public JSONRPCBindingInvoker(EndpointReference endpointReference, Operation operation, HttpClient httpClient) {
this.endpointReference = endpointReference;
this.operation = operation;
this.uri = endpointReference.getBinding().getURI();
this.mapper = createObjectMapper(null);
this.httpClient = httpClient;
}
public Message invoke(Message msg) {
HttpPost post = null;
HttpResponse response = null;
try {
String requestId = "1";
post = new HttpPost(uri);
HttpEntity entity = null;
Object[] args = msg.getBody();
final String db = msg.getOperation().getWrapper().getDataBinding();
if (!db.equals(JSONDataBinding.NAME)) {
// Construct a map to hold JSON-RPC request
final Map<String, Object> jsonRequest = new HashMap<String, Object>();
jsonRequest.put("method", "Service" + "." + msg.getOperation().getName());
List<Object> params = null;
// Extract the arguments
args = msg.getBody();
if (args != null) {
params = Arrays.asList(args);
} else {
params = Collections.emptyList();
}
jsonRequest.put("params", params);
jsonRequest.put("id", requestId);
// Create content producer so that we can stream the json result out
ContentProducer cp = new ContentProducer() {
public void writeTo(OutputStream outstream) throws IOException {
mapper.writeValue(outstream, jsonRequest);
}
};
entity = new EntityTemplate(cp);
} else {
// Single string argument
entity = new StringEntity((String)args[0], "UTF-8");
}
post.setEntity(entity);
response = httpClient.execute(post);
if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
//success
try {
entity = response.getEntity();
String entityResponse = EntityUtils.toString(entity);
entity.consumeContent();
if (!db.equals(JSONDataBinding.NAME)) {
JSONObject jsonResponse = new JSONObject(entityResponse);
if (!jsonResponse.has("result")) {
processException(jsonResponse);
}
DataType<List<DataType>> outputType = operation.getOutputType();
DataType returnType =
(outputType != null && !outputType.getLogical().isEmpty()) ? outputType.getLogical().get(0)
: null;
if (returnType == null) {
msg.setBody(null);
return msg;
}
//check requestId
if (!requestId.equalsIgnoreCase(jsonResponse.optString("id"))) {
throw new ServiceRuntimeException("Invalid response id:" + requestId);
}
Object rawResult = jsonResponse.get("result");
if (rawResult == null) {
processException(jsonResponse);
}
Class<?> returnClass = returnType.getPhysical();
Type genericReturnType = returnType.getGenericType();
ObjectMapper mapper = createObjectMapper(returnClass);
String json = rawResult.toString();
// Jackson requires the quoted String so that readValue can work
if (returnClass == String.class) {
json = "\"" + json + "\"";
}
Object body = mapper.readValue(json, TypeFactory.type(genericReturnType));
msg.setBody(body);
} else {
msg.setBody(entityResponse);
}
} catch (Exception e) {
//FIXME Exceptions are not handled correctly here
// They should be reported to the client JavaScript as proper
// JavaScript exceptions.
throw new ServiceRuntimeException("Unable to parse response", e);
}
}
} catch (Exception e) {
// e.printStackTrace();
msg.setFaultBody(e);
}
return msg;
}
public static ObjectMapper createObjectMapper(Class<?> cls) {
ObjectMapper mapper = new ObjectMapper();
if (cls != null) {
// Workaround for http://jira.codehaus.org/browse/JACKSON-413
Package pkg = cls.getPackage();
if (pkg != null) {
XmlJavaTypeAdapters adapters = pkg.getAnnotation(XmlJavaTypeAdapters.class);
if (adapters != null) {
CustomSerializerFactory serializerFactory = new CustomSerializerFactory();
CustomDeserializerFactory deserializerFactory = new CustomDeserializerFactory();
for (XmlJavaTypeAdapter a : adapters.value()) {
XmlAdapter xmlAdapter = null;
try {
xmlAdapter = a.value().newInstance();
} catch (Throwable e) {
// Ignore
}
if (xmlAdapter != null) {
XmlAdapterJsonDeserializer deserializer = new XmlAdapterJsonDeserializer(xmlAdapter);
XmlAdapterJsonSerializer serializer = new XmlAdapterJsonSerializer(xmlAdapter);
deserializerFactory.addSpecificMapping(a.type(), deserializer);
serializerFactory.addGenericMapping(a.type(), serializer);
StdDeserializerProvider deserializerProvider =
new StdDeserializerProvider(deserializerFactory);
mapper.setSerializerFactory(serializerFactory);
mapper.setDeserializerProvider(deserializerProvider);
}
}
}
}
}
AnnotationIntrospector primary = new JaxbAnnotationIntrospector();
AnnotationIntrospector secondary = new JacksonAnnotationIntrospector();
AnnotationIntrospector pair = new AnnotationIntrospector.Pair(primary, secondary);
mapper.getDeserializationConfig().setAnnotationIntrospector(pair);
// [rfeng] To avoid complaints about javaClass
mapper.getDeserializationConfig().set(DeserializationConfig.Feature.FAIL_ON_UNKNOWN_PROPERTIES, Boolean.FALSE);
mapper.getSerializationConfig().setAnnotationIntrospector(pair);
return mapper;
}
/**
* Generate and throw exception based on the data in the 'responseMessage'
*/
protected void processException(JSONObject responseMessage) throws JSONException {
JSONObject error = (JSONObject)responseMessage.get("error");
if (error != null) {
throw new ServiceRuntimeException(error.toString());
} else {
throw new ServiceRuntimeException(responseMessage.toString());
}
}
@Override
public boolean allowsPassByReference() {
return true;
}
}
|
