1 | |
|
2 | |
|
3 | |
|
4 | |
|
5 | |
|
6 | |
|
7 | |
|
8 | |
|
9 | |
|
10 | |
|
11 | |
package org.mule.transport.vm; |
12 | |
|
13 | |
import org.mule.DefaultMuleMessage; |
14 | |
import org.mule.api.DefaultMuleException; |
15 | |
import org.mule.api.MuleEvent; |
16 | |
import org.mule.api.MuleException; |
17 | |
import org.mule.api.MuleMessage; |
18 | |
import org.mule.api.construct.FlowConstruct; |
19 | |
import org.mule.api.endpoint.InboundEndpoint; |
20 | |
import org.mule.api.lifecycle.CreateException; |
21 | |
import org.mule.api.transport.Connector; |
22 | |
import org.mule.transport.PollingReceiverWorker; |
23 | |
import org.mule.transport.TransactedPollingMessageReceiver; |
24 | |
import org.mule.util.queue.Queue; |
25 | |
import org.mule.util.queue.QueueSession; |
26 | |
|
27 | |
import java.util.ArrayList; |
28 | |
import java.util.LinkedList; |
29 | |
import java.util.List; |
30 | |
|
31 | |
import edu.emory.mathcs.backport.java.util.concurrent.RejectedExecutionException; |
32 | |
|
33 | |
|
34 | |
|
35 | |
|
36 | |
|
37 | |
public class VMMessageReceiver extends TransactedPollingMessageReceiver |
38 | |
{ |
39 | |
|
40 | |
private VMConnector connector; |
41 | |
|
42 | |
public VMMessageReceiver(Connector connector, FlowConstruct flowConstruct, InboundEndpoint endpoint) |
43 | |
throws CreateException |
44 | |
{ |
45 | 0 | super(connector, flowConstruct, endpoint); |
46 | 0 | this.setReceiveMessagesInTransaction(endpoint.getTransactionConfig().isTransacted()); |
47 | 0 | this.connector = (VMConnector) connector; |
48 | 0 | } |
49 | |
|
50 | |
|
51 | |
|
52 | |
|
53 | |
|
54 | |
@Override |
55 | |
protected void schedule() throws RejectedExecutionException, NullPointerException, IllegalArgumentException |
56 | |
{ |
57 | 0 | if (!endpoint.getExchangePattern().hasResponse()) |
58 | |
{ |
59 | 0 | super.schedule(); |
60 | |
} |
61 | 0 | } |
62 | |
|
63 | |
@Override |
64 | |
protected void doDispose() |
65 | |
{ |
66 | |
|
67 | 0 | } |
68 | |
|
69 | |
@Override |
70 | |
protected void doConnect() throws Exception |
71 | |
{ |
72 | 0 | if (!endpoint.getExchangePattern().hasResponse()) |
73 | |
{ |
74 | |
|
75 | 0 | QueueSession queueSession = connector.getQueueSession(); |
76 | 0 | Queue q = queueSession.getQueue(endpoint.getEndpointURI().getAddress()); |
77 | 0 | if (logger.isDebugEnabled()) |
78 | |
{ |
79 | 0 | logger.debug("Current queue depth for queue: " + endpoint.getEndpointURI().getAddress() + " is: " |
80 | |
+ q.size()); |
81 | |
} |
82 | |
} |
83 | 0 | } |
84 | |
|
85 | |
@Override |
86 | |
protected void doDisconnect() throws Exception |
87 | |
{ |
88 | |
|
89 | 0 | } |
90 | |
|
91 | |
public void onMessage(MuleMessage message) throws MuleException |
92 | |
{ |
93 | |
|
94 | 0 | MuleMessage newMessage = new DefaultMuleMessage(message.getPayload(), message, connector.getMuleContext()); |
95 | 0 | routeMessage(newMessage); |
96 | 0 | } |
97 | |
|
98 | |
public MuleMessage onCall(MuleMessage message) throws MuleException |
99 | |
{ |
100 | |
try |
101 | |
{ |
102 | |
|
103 | 0 | MuleMessage newMessage = message.createInboundMessage(); |
104 | 0 | MuleEvent event = routeMessage(newMessage); |
105 | 0 | MuleMessage returnedMessage = event == null ? null : event.getMessage(); |
106 | 0 | if (returnedMessage != null) |
107 | |
{ |
108 | 0 | returnedMessage = returnedMessage.createInboundMessage(); |
109 | |
} |
110 | 0 | return returnedMessage; |
111 | |
} |
112 | 0 | catch (Exception e) |
113 | |
{ |
114 | 0 | throw new DefaultMuleException(e); |
115 | |
} |
116 | |
} |
117 | |
|
118 | |
|
119 | |
|
120 | |
|
121 | |
@Override |
122 | |
protected List<MuleMessage> getMessages() throws Exception |
123 | |
{ |
124 | 0 | if (isReceiveMessagesInTransaction()) |
125 | |
{ |
126 | 0 | MuleEvent message = getFirstMessage(); |
127 | 0 | if (message == null) |
128 | |
{ |
129 | 0 | return null; |
130 | |
} |
131 | |
|
132 | 0 | List<MuleMessage> messages = new ArrayList<MuleMessage>(1); |
133 | 0 | messages.add(message.getMessage()); |
134 | 0 | return messages; |
135 | |
} |
136 | |
else |
137 | |
{ |
138 | 0 | return getFirstMessages(); |
139 | |
} |
140 | |
} |
141 | |
|
142 | |
protected List<MuleMessage> getFirstMessages() throws Exception |
143 | |
{ |
144 | |
|
145 | 0 | QueueSession qs = connector.getQueueSession(); |
146 | 0 | Queue queue = qs.getQueue(endpoint.getEndpointURI().getAddress()); |
147 | |
|
148 | |
|
149 | 0 | List<MuleMessage> messages = new LinkedList<MuleMessage>(); |
150 | |
|
151 | |
|
152 | |
|
153 | |
|
154 | |
|
155 | |
|
156 | |
|
157 | 0 | int maxThreads = connector.getReceiverThreadingProfile().getMaxThreadsActive(); |
158 | |
|
159 | 0 | int batchSize = Math.max(1, Math.min(queue.size(), ((maxThreads / 2) - 1))); |
160 | |
|
161 | |
|
162 | 0 | MuleEvent message = (MuleEvent) queue.poll(connector.getQueueTimeout()); |
163 | |
|
164 | 0 | if (message != null) |
165 | |
{ |
166 | |
|
167 | 0 | messages.add(message.getMessage()); |
168 | |
|
169 | |
|
170 | 0 | for (int i = 0; i < batchSize && message != null; i++) |
171 | |
{ |
172 | 0 | message = (MuleEvent)queue.poll(0); |
173 | 0 | if (message != null) |
174 | |
{ |
175 | 0 | messages.add(message.getMessage()); |
176 | |
} |
177 | |
} |
178 | |
} |
179 | |
|
180 | |
|
181 | 0 | return messages; |
182 | |
} |
183 | |
|
184 | |
protected MuleEvent getFirstMessage() throws Exception |
185 | |
{ |
186 | |
|
187 | 0 | QueueSession qs = connector.getQueueSession(); |
188 | 0 | Queue queue = qs.getQueue(endpoint.getEndpointURI().getAddress()); |
189 | |
|
190 | 0 | return (MuleEvent) queue.poll(connector.getQueueTimeout()); |
191 | |
} |
192 | |
|
193 | |
@Override |
194 | |
protected void processMessage(Object msg) throws Exception |
195 | |
{ |
196 | 0 | MuleMessage message = (MuleMessage) msg; |
197 | |
|
198 | |
|
199 | 0 | MuleMessage newMessage = message.createInboundMessage(); |
200 | 0 | routeMessage(newMessage); |
201 | 0 | } |
202 | |
|
203 | |
|
204 | |
|
205 | |
|
206 | |
@Override |
207 | |
protected PollingReceiverWorker createWork() |
208 | |
{ |
209 | 0 | return new VMReceiverWorker(this); |
210 | |
} |
211 | |
|
212 | |
|
213 | |
|
214 | |
|
215 | |
|
216 | |
|
217 | |
protected static class VMReceiverWorker extends PollingReceiverWorker |
218 | |
{ |
219 | |
|
220 | |
public VMReceiverWorker(VMMessageReceiver pollingMessageReceiver) |
221 | |
{ |
222 | 0 | super(pollingMessageReceiver); |
223 | 0 | } |
224 | |
|
225 | |
@Override |
226 | |
protected void poll() throws Exception |
227 | |
{ |
228 | |
|
229 | |
|
230 | |
|
231 | |
|
232 | |
|
233 | 0 | while (this.getReceiver().isConnected()) |
234 | |
{ |
235 | 0 | super.poll(); |
236 | |
} |
237 | 0 | } |
238 | |
} |
239 | |
|
240 | |
} |