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
|
/*
* 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.jms.provider;
import javax.jms.JMSException;
import javax.jms.MessageListener;
import javax.naming.NamingException;
import org.apache.tuscany.sca.binding.jms.JMSBinding;
import org.apache.tuscany.sca.binding.jms.JMSBindingException;
import org.apache.tuscany.sca.binding.jms.headers.HeaderReferenceInterceptor;
import org.apache.tuscany.sca.binding.jms.host.AsyncResponseJMSServiceListener;
import org.apache.tuscany.sca.binding.jms.host.JMSAsyncResponseInvoker;
import org.apache.tuscany.sca.binding.jms.transport.TransportReferenceInterceptor;
import org.apache.tuscany.sca.core.ExtensionPointRegistry;
import org.apache.tuscany.sca.core.FactoryExtensionPoint;
import org.apache.tuscany.sca.core.UtilityExtensionPoint;
import org.apache.tuscany.sca.interfacedef.InterfaceContract;
import org.apache.tuscany.sca.interfacedef.Operation;
import org.apache.tuscany.sca.invocation.InvocationChain;
import org.apache.tuscany.sca.invocation.Invoker;
import org.apache.tuscany.sca.invocation.MessageFactory;
import org.apache.tuscany.sca.invocation.Phase;
import org.apache.tuscany.sca.provider.EndpointReferenceAsyncProvider;
import org.apache.tuscany.sca.provider.ProviderFactoryExtensionPoint;
import org.apache.tuscany.sca.provider.WireFormatProvider;
import org.apache.tuscany.sca.provider.WireFormatProviderFactory;
import org.apache.tuscany.sca.runtime.RuntimeComponentReference;
import org.apache.tuscany.sca.runtime.RuntimeEndpointReference;
import org.apache.tuscany.sca.work.WorkScheduler;
/**
* Implementation of the JMS reference binding provider.
*
* This version supports native async service invocations
*
* @version $Rev$ $Date$
*/
public class JMSBindingReferenceBindingProvider implements EndpointReferenceAsyncProvider {
protected RuntimeEndpointReference endpointReference;
protected RuntimeComponentReference reference;
protected JMSBinding jmsBinding;
protected JMSResourceFactory jmsResourceFactory;
protected InterfaceContract interfaceContract;
protected ExtensionPointRegistry extensions;
protected ProviderFactoryExtensionPoint providerFactories;
protected WireFormatProviderFactory requestWireFormatProviderFactory;
protected WireFormatProvider requestWireFormatProvider;
protected WireFormatProviderFactory responseWireFormatProviderFactory;
protected WireFormatProvider responseWireFormatProvider;
protected AsyncResponseJMSServiceListener responseQueue = null;
public JMSBindingReferenceBindingProvider(RuntimeEndpointReference endpointReference, ExtensionPointRegistry extensions, JMSResourceFactory jmsResourceFactory) {
this.endpointReference = endpointReference;
this.reference = (RuntimeComponentReference) endpointReference.getReference();
this.jmsBinding = (JMSBinding) endpointReference.getBinding();
this.extensions = extensions;
this.jmsResourceFactory = jmsResourceFactory;
// Get the factories/providers for operation selection
this.providerFactories = extensions.getExtensionPoint(ProviderFactoryExtensionPoint.class);
// Get the factories/providers for wire format
this.requestWireFormatProviderFactory =
(WireFormatProviderFactory)providerFactories.getProviderFactory(jmsBinding.getRequestWireFormat().getClass());
if (this.requestWireFormatProviderFactory != null){
this.requestWireFormatProvider = requestWireFormatProviderFactory.createReferenceWireFormatProvider(endpointReference);
}
this.responseWireFormatProviderFactory =
(WireFormatProviderFactory)providerFactories.getProviderFactory(jmsBinding.getResponseWireFormat().getClass());
if (this.responseWireFormatProviderFactory != null){
this.responseWireFormatProvider = responseWireFormatProviderFactory.createReferenceWireFormatProvider(endpointReference);
}
// create an interface contract that reflects both request and response
// wire formats
try {
interfaceContract = (InterfaceContract)reference.getInterfaceContract().clone();
requestWireFormatProvider.configureWireFormatInterfaceContract(interfaceContract);
responseWireFormatProvider.configureWireFormatInterfaceContract(interfaceContract);
} catch (CloneNotSupportedException ex){
interfaceContract = reference.getInterfaceContract();
} // end try
// If the service is asyncInvocation, then create a fixed response location
if( endpointReference.isAsyncInvocation() ) {
String asyncCallbackName = endpointReference.getReference().getName() + "_asyncResponse";
jmsBinding.setResponseDestinationName(asyncCallbackName);
} // end if
} // end constructor
public Invoker createInvoker(Operation operation) {
if (jmsBinding.getDestinationName() == null) {
throw new JMSBindingException("No destination specified for reference " + reference.getName());
} // end if
if ( jmsBinding.getActivationSpecName() != null ) {
throw new JMSBindingException("Activation spec can not be specified on an SCA reference binding.");
}
Invoker invoker = null;
invoker = new RRBJMSBindingInvoker(operation, jmsResourceFactory, endpointReference);
return invoker;
} // end method createInvoker
public boolean supportsOneWayInvocation() {
return true;
}
public InterfaceContract getBindingInterfaceContract() {
return interfaceContract;
}
public void start() {
// If the reference is async invocation, then a response queue handler and associated JMS listener must be created
// and started
if (endpointReference.isAsyncInvocation()) {
// Create the JMS listener
FactoryExtensionPoint modelFactories = extensions.getExtensionPoint(FactoryExtensionPoint.class);
MessageFactory messageFactory = modelFactories.getFactory(MessageFactory.class);
MessageListener listener;
try {
listener = new JMSAsyncResponseInvoker(endpointReference, messageFactory, jmsResourceFactory);
} catch (NamingException e) {
throw new JMSBindingException("Unable to create JMSResponseInvoker", e);
} // end try
// Create the response queue handler
UtilityExtensionPoint utilities = extensions.getExtensionPoint(UtilityExtensionPoint.class);
WorkScheduler workScheduler = utilities.getUtility(WorkScheduler.class);
responseQueue = new AsyncResponseJMSServiceListener(listener,
jmsBinding.getResponseDestinationName(),
jmsBinding, workScheduler, jmsResourceFactory);
responseQueue.start();
} // end if
} // end method start
public void stop() {
try {
if( responseQueue != null ) {
responseQueue.stop();
} // end if
jmsResourceFactory.closeConnection();
jmsResourceFactory.closeResponseConnection();
} catch (JMSException e) {
throw new JMSBindingException(e);
}
} // end method stop
/*
* set up the reference binding wire with the right set of jms reference
* interceptors
*/
public void configure() {
InvocationChain bindingChain = endpointReference.getBindingInvocationChain();
// add transport interceptor
bindingChain.addInterceptor(Phase.REFERENCE_BINDING_TRANSPORT,
new TransportReferenceInterceptor(jmsBinding,
jmsResourceFactory,
endpointReference) );
// add request wire format
bindingChain.addInterceptor(requestWireFormatProvider.getPhase(),
requestWireFormatProvider.createInterceptor());
// add response wire format, but only add it if it's different from the request
if (!jmsBinding.getRequestWireFormat().equals(jmsBinding.getResponseWireFormat())){
bindingChain.addInterceptor(responseWireFormatProvider.getPhase(),
responseWireFormatProvider.createInterceptor());
}
// add the header processor that comes after the wire formatter but before the
// policy interceptors
bindingChain.addInterceptor(Phase.REFERENCE_BINDING_WIREFORMAT,
new HeaderReferenceInterceptor(extensions,
jmsBinding,
jmsResourceFactory,
endpointReference) );
}
/**
* Indicates that this binding supports async invocations natively
*/
public boolean supportsNativeAsync() {
return true;
} // end method supportsNativeAsync
public JMSResourceFactory getJMSResourceFactory() {
return jmsResourceFactory;
}
} // end class
|
