Source Code Cross Referenced for FxCache.java in  » J2EE » fleXive » com » flexive » ejb » mbeans » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » J2EE » fleXive » com.flexive.ejb.mbeans 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /***************************************************************
002:         *  This file is part of the [fleXive](R) project.
003:         *
004:         *  Copyright (c) 1999-2008
005:         *  UCS - unique computing solutions gmbh (http://www.ucs.at)
006:         *  All rights reserved
007:         *
008:         *  The [fleXive](R) project is free software; you can redistribute
009:         *  it and/or modify it under the terms of the GNU General Public
010:         *  License as published by the Free Software Foundation;
011:         *  either version 2 of the License, or (at your option) any
012:         *  later version.
013:         *
014:         *  The GNU General Public License can be found at
015:         *  http://www.gnu.org/copyleft/gpl.html.
016:         *  A copy is found in the textfile GPL.txt and important notices to the
017:         *  license from the author are found in LICENSE.txt distributed with
018:         *  these libraries.
019:         *
020:         *  This library is distributed in the hope that it will be useful,
021:         *  but WITHOUT ANY WARRANTY; without even the implied warranty of
022:         *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
023:         *  GNU General Public License for more details.
024:         *
025:         *  For further information about UCS - unique computing solutions gmbh,
026:         *  please see the company website: http://www.ucs.at
027:         *
028:         *  For further information about [fleXive](R), please see the
029:         *  project website: http://www.flexive.org
030:         *
031:         *
032:         *  This copyright notice MUST APPEAR in all copies of the file!
033:         ***************************************************************/package com.flexive.ejb.mbeans;
034:
035:        import com.flexive.core.stream.BinaryDownloadProtocol;
036:        import com.flexive.core.stream.BinaryUploadProtocol;
037:        import com.flexive.core.structure.StructureLoader;
038:        import com.flexive.shared.CacheAdmin;
039:        import com.flexive.shared.FxContext;
040:        import com.flexive.shared.cache.FxBackingCache;
041:        import com.flexive.shared.cache.FxBackingCacheProvider;
042:        import com.flexive.shared.cache.FxBackingCacheProviderFactory;
043:        import com.flexive.shared.cache.FxCacheException;
044:        import com.flexive.shared.mbeans.FxCacheMBean;
045:        import com.flexive.shared.mbeans.MBeanHelper;
046:        import com.flexive.shared.stream.FxStreamUtils;
047:        import com.flexive.stream.ServerLocation;
048:        import com.flexive.stream.StreamServer;
049:        import org.apache.commons.logging.Log;
050:        import org.apache.commons.logging.LogFactory;
051:        import org.jboss.cache.Cache;
052:
053:        import javax.management.*;
054:        import java.util.ArrayList;
055:        import java.util.List;
056:        import java.util.Set;
057:
058:        /**
059:         * FxCache MBean
060:         * TODO: implement missing skeletons ...
061:         *
062:         * @author Markus Plesser (markus.plesser@flexive.com), UCS - unique computing solutions gmbh (http://www.ucs.at)
063:         */
064:        //@Service(objectName = CacheAdmin.CACHE_SERVICE_NAME)
065:        public class FxCache implements  FxCacheMBean, DynamicMBean {
066:            private static final transient Log LOG = LogFactory
067:                    .getLog(FxCache.class);
068:
069:            private StreamServer server = null;
070:            private long nodeStartupTime = -1;
071:
072:            private FxBackingCacheProvider cacheProvider = null;
073:
074:            /**
075:             * Get the backing cache
076:             *
077:             * @return FxBackingCache
078:             * @throws FxCacheException on errors
079:             */
080:            private FxBackingCache getBackingCache() throws FxCacheException {
081:                if (cacheProvider == null) {
082:                    //start the cache
083:                    cacheProvider = FxBackingCacheProviderFactory.createNew();
084:                    LOG.info("Starting backing Cache {"
085:                            + cacheProvider.getDescription() + "}");
086:                    cacheProvider.init();
087:                    if (cacheProvider.getInstance().get(
088:                            "/" + this .getClass().getName(), SYSTEM_UP_KEY) == null) {
089:                        cacheProvider.getInstance().put(
090:                                "/" + this .getClass().getName(), SYSTEM_UP_KEY,
091:                                System.currentTimeMillis());
092:                    }
093:                    nodeStartupTime = System.currentTimeMillis();
094:                }
095:                return cacheProvider.getInstance();
096:            }
097:
098:            /**
099:             * {@inheritDoc}
100:             */
101:            @SuppressWarnings("unchecked")
102:            public void create() throws Exception {
103:                if (server != null)
104:                    return;
105:
106:                //switch to UTF-8 encoding
107:                if (!"UTF-8".equals(System.getProperty("file.encoding"))) {
108:                    // set default charset to UTF-8
109:                    LOG.warn("Changing system character encoding from "
110:                            + System.getProperty("file.encoding")
111:                            + " to UTF-8.");
112:                    System.setProperty("file.encoding", "UTF-8");
113:                }
114:                //start streamserver
115:                try {
116:                    server = new StreamServer(FxStreamUtils
117:                            .probeNetworkInterfaces(),
118:                            FxCacheMBean.STREAMING_PORT);
119:                    server.addProtocol(new BinaryUploadProtocol());
120:                    server.addProtocol(new BinaryDownloadProtocol());
121:                    server.start();
122:                    List<ServerLocation> servers = null;
123:                    if (globalExists(CacheAdmin.STREAMSERVER_BASE,
124:                            CacheAdmin.STREAMSERVER_EJB_KEY))
125:                        servers = (List<ServerLocation>) globalGet(
126:                                CacheAdmin.STREAMSERVER_BASE,
127:                                CacheAdmin.STREAMSERVER_EJB_KEY);
128:                    if (servers == null)
129:                        servers = new ArrayList<ServerLocation>(5);
130:                    ServerLocation this Server = new ServerLocation(server
131:                            .getAddress().getAddress(), server.getPort());
132:                    if (!servers.contains(this Server))
133:                        servers.add(this Server);
134:                    globalPut(CacheAdmin.STREAMSERVER_BASE,
135:                            CacheAdmin.STREAMSERVER_EJB_KEY, servers);
136:                    LOG.info("Added " + this Server
137:                            + " to available StreamServers (" + servers.size()
138:                            + " total)");
139:                } catch (Exception e) {
140:                    LOG.error("Failed to start StreamServer. Error: "
141:                            + e.getMessage(), e);
142:                }
143:            }
144:
145:            /**
146:             * {@inheritDoc}
147:             */
148:            public void destroy() throws Exception {
149:                //System.out.println("about to uninstall timer");
150:                //EJBLookup.getTimerServiceInterface().uninstall();
151:                //System.out.println("timers uninstalled");
152:                if (server != null) {
153:                    LOG.info("Shutting down StreamServer {"
154:                            + server.getDescription() + "}");
155:                    try {
156:                        server.stop();
157:                    } catch (Exception e) {
158:                        LOG.error(e, e);
159:                    }
160:                    server = null;
161:                }
162:                try {
163:                    if (cacheProvider != null) {
164:                        cacheProvider.shutdown();
165:                        cacheProvider = null;
166:                    }
167:                } catch (FxCacheException e) {
168:                    LOG.error(e, e);
169:                }
170:            }
171:
172:            //TODO: finish me!
173:            private static MBeanInfo info = new MBeanInfo(
174:                    FxCache.class.getCanonicalName(),
175:                    "[fleXive] Cache MBean",
176:                    new MBeanAttributeInfo[] { new MBeanAttributeInfo(
177:                            "FxCache", FxCache.class.getCanonicalName(), "",
178:                            true, false, false) },
179:                    new MBeanConstructorInfo[] {},
180:                    new MBeanOperationInfo[] {
181:                            new MBeanOperationInfo("get", "",
182:                                    new MBeanParameterInfo[] {
183:                                            new MBeanParameterInfo("path",
184:                                                    "java.lang.String", ""),
185:                                            new MBeanParameterInfo("key",
186:                                                    "java.lang.Object", "") },
187:                                    "java.lang.Object", MBeanOperationInfo.INFO),
188:                            new MBeanOperationInfo("put", "",
189:                                    new MBeanParameterInfo[] {
190:                                            new MBeanParameterInfo("path",
191:                                                    "java.lang.String", ""),
192:                                            new MBeanParameterInfo("key",
193:                                                    "java.lang.Object", ""),
194:                                            new MBeanParameterInfo("value",
195:                                                    "java.lang.Object", "") },
196:                                    "void", MBeanOperationInfo.ACTION) },
197:                    new MBeanNotificationInfo[] {});
198:
199:            /**
200:             * {@inheritDoc}
201:             */
202:            public String getDeploymentId() {
203:                return MBeanHelper.DEPLOYMENT_ID;
204:            }
205:
206:            /**
207:             * Includes the division id into the path.
208:             *
209:             * @param path the path to encode
210:             * @return the encoded path
211:             * @throws FxCacheException if the division id could not be resolved
212:             */
213:            private String divisionEncodePath(String path)
214:                    throws FxCacheException {
215:                try {
216:                    int divId;
217:                    //#<id>  - purposely undocumented hack to force a division ;) - used during environment loading
218:                    if (path.charAt(0) == '#') {
219:                        try {
220:                            divId = Integer.parseInt(path.substring(1, path
221:                                    .indexOf('/')));
222:                            path = path.substring(path.indexOf('/'));
223:                        } catch (Exception e) {
224:                            throw new FxCacheException(
225:                                    "Invalid Division Id in path [" + path
226:                                            + "]!");
227:                        }
228:                    } else {
229:                        FxContext ri = FxContext.get();
230:                        if (ri.getDivisionId() == -1) {
231:                            throw new FxCacheException(
232:                                    "Division ID missing in request information ["
233:                                            + ri.getRequestURI() + "]");
234:                        }
235:                        divId = ri.getDivisionId();
236:                    }
237:                    return "/Division" + divId
238:                            + (path.startsWith("/") ? "" : "/") + path;
239:                } catch (Throwable t) {
240:                    System.err.println(t.getMessage());
241:                    throw new FxCacheException("Unable to encode path: "
242:                            + t.getMessage());
243:                }
244:            }
245:
246:            /**
247:             * Includes the global division id into the path.
248:             *
249:             * @param path the path to encode
250:             * @return the encoded path
251:             */
252:            private String globalDivisionEncodePath(final String path) {
253:                return "/GlobalConfiguration"
254:                        + (path.startsWith("/") ? "" : "/") + path;
255:            }
256:
257:            /**
258:             * {@inheritDoc}
259:             */
260:            public Cache<Object, Object> getCache() throws FxCacheException {
261:                return getBackingCache().getCache();
262:            }
263:
264:            /**
265:             * {@inheritDoc}
266:             */
267:            public Object get(String path, Object key) throws FxCacheException {
268:                return getBackingCache().get(divisionEncodePath(path), key);
269:            }
270:
271:            /**
272:             * {@inheritDoc}
273:             */
274:            public Object globalGet(String path, Object key)
275:                    throws FxCacheException {
276:                return getBackingCache().get(globalDivisionEncodePath(path),
277:                        key);
278:            }
279:
280:            /**
281:             * {@inheritDoc}
282:             */
283:            public boolean globalExists(String path, Object key)
284:                    throws FxCacheException {
285:                return getBackingCache().exists(globalDivisionEncodePath(path),
286:                        key);
287:            }
288:
289:            /**
290:             * {@inheritDoc}
291:             */
292:            public void put(String path, Object key, Object value)
293:                    throws FxCacheException {
294:                getBackingCache().put(divisionEncodePath(path), key, value);
295:            }
296:
297:            /**
298:             * {@inheritDoc}
299:             */
300:            public boolean exists(String path, Object key)
301:                    throws FxCacheException {
302:                return getBackingCache().exists(divisionEncodePath(path), key);
303:            }
304:
305:            /**
306:             * {@inheritDoc}
307:             */
308:            public void globalPut(String path, Object key, Object value)
309:                    throws FxCacheException {
310:                getBackingCache().put(globalDivisionEncodePath(path), key,
311:                        value);
312:            }
313:
314:            /**
315:             * {@inheritDoc}
316:             */
317:            public void remove(String path) throws FxCacheException {
318:                getBackingCache().remove(divisionEncodePath(path));
319:            }
320:
321:            /**
322:             * {@inheritDoc}
323:             */
324:            public void globalRemove(String path) throws FxCacheException {
325:                getBackingCache().remove(globalDivisionEncodePath(path));
326:            }
327:
328:            /**
329:             * {@inheritDoc}
330:             */
331:            public Set getKeys(String path) throws FxCacheException {
332:                return getBackingCache().getKeys(divisionEncodePath(path));
333:            }
334:
335:            /**
336:             * {@inheritDoc}
337:             */
338:            public Set globalGetKeys(String path) throws FxCacheException {
339:                return getBackingCache()
340:                        .getKeys(globalDivisionEncodePath(path));
341:            }
342:
343:            /**
344:             * {@inheritDoc}
345:             */
346:            public Set getChildrenNames(String path) throws FxCacheException {
347:                return getBackingCache().getChildrenNames(
348:                        divisionEncodePath(path));
349:            }
350:
351:            /**
352:             * {@inheritDoc}
353:             */
354:            public void remove(String path, Object key) throws FxCacheException {
355:                getBackingCache().remove(divisionEncodePath(path), key);
356:            }
357:
358:            /**
359:             * {@inheritDoc}
360:             */
361:            public void globalRemove(String path, Object key)
362:                    throws FxCacheException {
363:                getBackingCache().remove(globalDivisionEncodePath(path), key);
364:            }
365:
366:            /**
367:             * {@inheritDoc}
368:             */
369:            public void reloadEnvironment(Integer divisionId) throws Exception {
370:                StructureLoader.load(divisionId, true, null);
371:            }
372:
373:            /**
374:             * {@inheritDoc}
375:             */
376:            public void setEvictionStrategy(Integer divisionId, String path,
377:                    Integer maxContents, Integer timeToIdle, Integer timeToLive)
378:                    throws FxCacheException {
379:                cacheProvider.setEvictionStrategy("/Division" + divisionId
380:                        + (path.charAt(0) == '/' ? path : '/' + path),
381:                        maxContents, timeToIdle, timeToLive);
382:            }
383:
384:            /**
385:             * {@inheritDoc}
386:             */
387:            public long getSystemStartTime() {
388:                try {
389:                    return (Long) getBackingCache().get(
390:                            "/" + this .getClass().getName(), SYSTEM_UP_KEY);
391:                } catch (Exception exc) {
392:                    return -1;
393:                }
394:            }
395:
396:            /**
397:             * {@inheritDoc}
398:             */
399:            public long getNodeStartTime() {
400:                return nodeStartupTime;
401:            }
402:
403:            /**
404:             * {@inheritDoc}
405:             */
406:            public Object getAttribute(String attribute)
407:                    throws AttributeNotFoundException, MBeanException,
408:                    ReflectionException {
409:                /*if ("FxCache".equals(attribute))
410:                    return getCache();
411:                else*/
412:                if ("DeploymentId".equals(attribute))
413:                    return getDeploymentId();
414:                else if ("SystemStartTime".equals(attribute))
415:                    return getSystemStartTime();
416:                else if ("NodeStartTime".equals(attribute))
417:                    return getNodeStartTime();
418:                return null; //To change body of implemented methods use File | Settings | File Templates.
419:            }
420:
421:            /**
422:             * {@inheritDoc}
423:             */
424:            public void setAttribute(Attribute attribute)
425:                    throws AttributeNotFoundException,
426:                    InvalidAttributeValueException, MBeanException,
427:                    ReflectionException {
428:                //TODO: code me!
429:            }
430:
431:            /**
432:             * {@inheritDoc}
433:             */
434:            public AttributeList getAttributes(String[] attributes) {
435:                //TODO: code me!
436:                return null;
437:            }
438:
439:            /**
440:             * {@inheritDoc}
441:             */
442:            public AttributeList setAttributes(AttributeList attributes) {
443:                //TODO: code me!
444:                return null;
445:            }
446:
447:            /**
448:             * {@inheritDoc}
449:             */
450:            public Object invoke(String actionName, Object params[],
451:                    String signature[]) throws MBeanException,
452:                    ReflectionException {
453:                try {
454:                    if ("get".equals(actionName)) {
455:                        return get((String) params[0], params[1]);
456:                    } else if ("put".equals(actionName)) {
457:                        put((String) params[0], params[1], params[2]);
458:                    } else if ("remove".equals(actionName)
459:                            && params.length == 1) {
460:                        remove((String) params[0]);
461:                    } else if ("remove".equals(actionName)
462:                            && params.length == 2) {
463:                        remove((String) params[0], params[1]);
464:                    } else if ("exists".equals(actionName)
465:                            && params.length == 2) {
466:                        return exists((String) params[0], params[1]);
467:                    } else if ("getKeys".equals(actionName)) {
468:                        return getKeys((String) params[0]);
469:                    } else if ("globalGet".equals(actionName)) {
470:                        return globalGet((String) params[0], params[1]);
471:                    } else if ("globalPut".equals(actionName)) {
472:                        globalPut((String) params[0], params[1], params[2]);
473:                    } else if ("globalRemove".equals(actionName)
474:                            && params.length == 1) {
475:                        globalRemove((String) params[0]);
476:                    } else if ("globalRemove".equals(actionName)
477:                            && params.length == 2) {
478:                        globalRemove((String) params[0], params[1]);
479:                    } else if ("globalExists".equals(actionName)
480:                            && params.length == 2) {
481:                        return globalExists((String) params[0], params[1]);
482:                    } else if ("globalGetKeys".equals(actionName)
483:                            && params.length == 1) {
484:                        return globalGetKeys((String) params[0]);
485:                    } else if ("getChildrenNames".equals(actionName)) {
486:                        return getChildrenNames((String) params[0]);
487:                    } else if ("reloadEnvironment".equals(actionName)) {
488:                        reloadEnvironment((Integer) params[0]);
489:                    } else if ("create".equals(actionName)) {
490:                        create();
491:                    } else if ("destroy".equals(actionName)) {
492:                        destroy();
493:                    } else if ("setEvictionStrategy".equals(actionName)
494:                            && params.length == 5) {
495:                        setEvictionStrategy((Integer) params[0],
496:                                (String) params[1], (Integer) params[2],
497:                                (Integer) params[3], (Integer) params[4]);
498:                    } else {
499:                        LOG.warn("Tried to call [" + actionName
500:                                + "] which is not implemented!");
501:                    }
502:                } catch (Exception e) {
503:                    LOG
504:                            .error("Failed to invoke MBean op: "
505:                                    + e.getMessage(), e);
506:                    throw new MBeanException(e);
507:                }
508:                return null; //To change body of implemented methods use File | Settings | File Templates.
509:            }
510:
511:            public MBeanInfo getMBeanInfo() {
512:                return info;
513:            }
514:        }
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