001 /**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017 package org.apache.activemq.command;
018
019 import java.io.DataInputStream;
020 import java.io.DataOutputStream;
021 import java.io.IOException;
022 import java.util.Arrays;
023 import java.util.Collections;
024 import java.util.HashMap;
025 import java.util.Map;
026 import org.apache.activemq.state.CommandVisitor;
027 import org.apache.activemq.util.ByteArrayInputStream;
028 import org.apache.activemq.util.ByteArrayOutputStream;
029 import org.apache.activemq.util.ByteSequence;
030 import org.apache.activemq.util.MarshallingSupport;
031 import org.apache.activemq.wireformat.WireFormat;
032
033 /**
034 * @openwire:marshaller code="1"
035 *
036 */
037 public class WireFormatInfo implements Command, MarshallAware {
038
039 public static final byte DATA_STRUCTURE_TYPE = CommandTypes.WIREFORMAT_INFO;
040 private static final int MAX_PROPERTY_SIZE = 1024 * 4;
041 private static final byte MAGIC[] = new byte[] {'A', 'c', 't', 'i', 'v', 'e', 'M', 'Q'};
042
043 protected byte magic[] = MAGIC;
044 protected int version;
045 protected ByteSequence marshalledProperties;
046
047 protected transient Map<String, Object> properties;
048 private transient Endpoint from;
049 private transient Endpoint to;
050
051 public byte getDataStructureType() {
052 return DATA_STRUCTURE_TYPE;
053 }
054
055 public boolean isWireFormatInfo() {
056 return true;
057 }
058
059 public boolean isMarshallAware() {
060 return true;
061 }
062
063 /**
064 * @openwire:property version=1 size=8 testSize=-1
065 */
066 public byte[] getMagic() {
067 return magic;
068 }
069
070 public void setMagic(byte[] magic) {
071 this.magic = magic;
072 }
073
074 /**
075 * @openwire:property version=1
076 */
077 public int getVersion() {
078 return version;
079 }
080
081 public void setVersion(int version) {
082 this.version = version;
083 }
084
085 /**
086 * @openwire:property version=1
087 */
088 public ByteSequence getMarshalledProperties() {
089 return marshalledProperties;
090 }
091
092 public void setMarshalledProperties(ByteSequence marshalledProperties) {
093 this.marshalledProperties = marshalledProperties;
094 }
095
096 /**
097 * The endpoint within the transport where this message came from.
098 */
099 public Endpoint getFrom() {
100 return from;
101 }
102
103 public void setFrom(Endpoint from) {
104 this.from = from;
105 }
106
107 /**
108 * The endpoint within the transport where this message is going to - null
109 * means all endpoints.
110 */
111 public Endpoint getTo() {
112 return to;
113 }
114
115 public void setTo(Endpoint to) {
116 this.to = to;
117 }
118
119 // ////////////////////
120 //
121 // Implementation Methods.
122 //
123 // ////////////////////
124
125 public Object getProperty(String name) throws IOException {
126 if (properties == null) {
127 if (marshalledProperties == null) {
128 return null;
129 }
130 properties = unmarsallProperties(marshalledProperties);
131 }
132 return properties.get(name);
133 }
134
135 @SuppressWarnings("unchecked")
136 public Map<String, Object> getProperties() throws IOException {
137 if (properties == null) {
138 if (marshalledProperties == null) {
139 return Collections.EMPTY_MAP;
140 }
141 properties = unmarsallProperties(marshalledProperties);
142 }
143 return Collections.unmodifiableMap(properties);
144 }
145
146 public void clearProperties() {
147 marshalledProperties = null;
148 properties = null;
149 }
150
151 public void setProperty(String name, Object value) throws IOException {
152 lazyCreateProperties();
153 properties.put(name, value);
154 }
155
156 protected void lazyCreateProperties() throws IOException {
157 if (properties == null) {
158 if (marshalledProperties == null) {
159 properties = new HashMap<String, Object>();
160 } else {
161 properties = unmarsallProperties(marshalledProperties);
162 marshalledProperties = null;
163 }
164 }
165 }
166
167 private Map<String, Object> unmarsallProperties(ByteSequence marshalledProperties) throws IOException {
168 return MarshallingSupport.unmarshalPrimitiveMap(new DataInputStream(new ByteArrayInputStream(marshalledProperties)), MAX_PROPERTY_SIZE);
169 }
170
171 public void beforeMarshall(WireFormat wireFormat) throws IOException {
172 // Need to marshal the properties.
173 if (marshalledProperties == null && properties != null) {
174 ByteArrayOutputStream baos = new ByteArrayOutputStream();
175 DataOutputStream os = new DataOutputStream(baos);
176 MarshallingSupport.marshalPrimitiveMap(properties, os);
177 os.close();
178 marshalledProperties = baos.toByteSequence();
179 }
180 }
181
182 public void afterMarshall(WireFormat wireFormat) throws IOException {
183 }
184
185 public void beforeUnmarshall(WireFormat wireFormat) throws IOException {
186 }
187
188 public void afterUnmarshall(WireFormat wireFormat) throws IOException {
189 }
190
191 public boolean isValid() {
192 return magic != null && Arrays.equals(magic, MAGIC);
193 }
194
195 public void setResponseRequired(boolean responseRequired) {
196 }
197
198 /**
199 * @throws IOException
200 */
201 public boolean isCacheEnabled() throws IOException {
202 return Boolean.TRUE == getProperty("CacheEnabled");
203 }
204
205 public void setCacheEnabled(boolean cacheEnabled) throws IOException {
206 setProperty("CacheEnabled", cacheEnabled ? Boolean.TRUE : Boolean.FALSE);
207 }
208
209 /**
210 * @throws IOException
211 */
212 public boolean isStackTraceEnabled() throws IOException {
213 return Boolean.TRUE == getProperty("StackTraceEnabled");
214 }
215
216 public void setStackTraceEnabled(boolean stackTraceEnabled) throws IOException {
217 setProperty("StackTraceEnabled", stackTraceEnabled ? Boolean.TRUE : Boolean.FALSE);
218 }
219
220 /**
221 * @throws IOException
222 */
223 public boolean isTcpNoDelayEnabled() throws IOException {
224 return Boolean.TRUE == getProperty("TcpNoDelayEnabled");
225 }
226
227 public void setTcpNoDelayEnabled(boolean tcpNoDelayEnabled) throws IOException {
228 setProperty("TcpNoDelayEnabled", tcpNoDelayEnabled ? Boolean.TRUE : Boolean.FALSE);
229 }
230
231 /**
232 * @throws IOException
233 */
234 public boolean isSizePrefixDisabled() throws IOException {
235 return Boolean.TRUE == getProperty("SizePrefixDisabled");
236 }
237
238 public void setSizePrefixDisabled(boolean prefixPacketSize) throws IOException {
239 setProperty("SizePrefixDisabled", prefixPacketSize ? Boolean.TRUE : Boolean.FALSE);
240 }
241
242 /**
243 * @throws IOException
244 */
245 public boolean isTightEncodingEnabled() throws IOException {
246 return Boolean.TRUE == getProperty("TightEncodingEnabled");
247 }
248
249 public void setTightEncodingEnabled(boolean tightEncodingEnabled) throws IOException {
250 setProperty("TightEncodingEnabled", tightEncodingEnabled ? Boolean.TRUE : Boolean.FALSE);
251 }
252
253 /**
254 * @throws IOException
255 */
256 public long getMaxInactivityDuration() throws IOException {
257 Long l = (Long)getProperty("MaxInactivityDuration");
258 return l == null ? 0 : l.longValue();
259 }
260
261 public void setMaxInactivityDuration(long maxInactivityDuration) throws IOException {
262 setProperty("MaxInactivityDuration", new Long(maxInactivityDuration));
263 }
264
265 public long getMaxInactivityDurationInitalDelay() throws IOException {
266 Long l = (Long)getProperty("MaxInactivityDurationInitalDelay");
267 return l == null ? 0 : l.longValue();
268 }
269
270 public void setMaxInactivityDurationInitalDelay(long maxInactivityDurationInitalDelay) throws IOException {
271 setProperty("MaxInactivityDurationInitalDelay", new Long(maxInactivityDurationInitalDelay));
272 }
273
274
275
276 /**
277 * @throws IOException
278 */
279 public int getCacheSize() throws IOException {
280 Integer i = (Integer)getProperty("CacheSize");
281 return i == null ? 0 : i.intValue();
282 }
283
284 public void setCacheSize(int cacheSize) throws IOException {
285 setProperty("CacheSize", new Integer(cacheSize));
286 }
287
288 public Response visit(CommandVisitor visitor) throws Exception {
289 return visitor.processWireFormat(this);
290 }
291
292 @Override
293 public String toString() {
294 Map<String, Object> p = null;
295 try {
296 p = getProperties();
297 } catch (IOException ignore) {
298 }
299 return "WireFormatInfo { version=" + version + ", properties=" + p + ", magic=" + toString(magic) + "}";
300 }
301
302 private String toString(byte[] data) {
303 StringBuffer sb = new StringBuffer();
304 sb.append('[');
305 for (int i = 0; i < data.length; i++) {
306 if (i != 0) {
307 sb.append(',');
308 }
309 sb.append((char)data[i]);
310 }
311 sb.append(']');
312 return sb.toString();
313 }
314
315 // /////////////////////////////////////////////////////////////
316 //
317 // This are not implemented.
318 //
319 // /////////////////////////////////////////////////////////////
320
321 public void setCommandId(int value) {
322 }
323
324 public int getCommandId() {
325 return 0;
326 }
327
328 public boolean isResponseRequired() {
329 return false;
330 }
331
332 public boolean isResponse() {
333 return false;
334 }
335
336 public boolean isBrokerInfo() {
337 return false;
338 }
339
340 public boolean isMessageDispatch() {
341 return false;
342 }
343
344 public boolean isMessage() {
345 return false;
346 }
347
348 public boolean isMessageAck() {
349 return false;
350 }
351
352 public boolean isMessageDispatchNotification() {
353 return false;
354 }
355
356 public boolean isShutdownInfo() {
357 return false;
358 }
359
360 public boolean isConnectionControl() {
361 return false;
362 }
363
364 public void setCachedMarshalledForm(WireFormat wireFormat, ByteSequence data) {
365 }
366
367 public ByteSequence getCachedMarshalledForm(WireFormat wireFormat) {
368 return null;
369 }
370
371 }