From b086f57f56bf0eb9dab9cf321a0f69aaaae84347 Mon Sep 17 00:00:00 2001 From: Andrew Branson Date: Wed, 30 May 2012 08:37:45 +0200 Subject: Initial Maven Conversion --- .../persistency/ClusterStorageManager.java | 379 --------------------- 1 file changed, 379 deletions(-) delete mode 100644 source/com/c2kernel/persistency/ClusterStorageManager.java (limited to 'source/com/c2kernel/persistency/ClusterStorageManager.java') diff --git a/source/com/c2kernel/persistency/ClusterStorageManager.java b/source/com/c2kernel/persistency/ClusterStorageManager.java deleted file mode 100644 index 756ac4d..0000000 --- a/source/com/c2kernel/persistency/ClusterStorageManager.java +++ /dev/null @@ -1,379 +0,0 @@ -package com.c2kernel.persistency; - -import java.util.ArrayList; -import java.util.ConcurrentModificationException; -import java.util.HashMap; -import java.util.Iterator; -import java.util.StringTokenizer; - -import com.c2kernel.common.ObjectNotFoundException; -import com.c2kernel.entity.C2KLocalObject; -import com.c2kernel.entity.agent.JobList; -import com.c2kernel.entity.proxy.EntityProxyManager; -import com.c2kernel.entity.proxy.ProxyMessage; -import com.c2kernel.events.History; -import com.c2kernel.persistency.outcome.Outcome; -import com.c2kernel.persistency.outcome.Viewpoint; -import com.c2kernel.process.Gateway; -import com.c2kernel.utils.Logger; -import com.c2kernel.utils.SoftCache; - -/** - * instantiates ClusterStorages listed in properties file All read/write requests to storage pass through this object, which - * can query the capabilities of each declared storage, and channel requests accordingly. Transaction based. - * - * * @version $Revision: 1.62 $ $Date: 2006/02/01 13:27:46 $ - * @author $Author: abranson $ - */ -public class ClusterStorageManager { - HashMap allStores = new HashMap(); - String[] clusterPriority; - HashMap> clusterWriters = new HashMap>(); - HashMap> clusterReaders = new HashMap>(); - // we don't need a soft cache for the top level cache - the proxies and entities clear that when reaped - HashMap> memoryCache = new HashMap>(); - boolean ready = false; - - /** - * Initialises all ClusterStorage handlers listed by class name in the property "ClusterStorages" - * This property is usually process specific, and so should be in the server/client.conf and not the connect file. - */ - public ClusterStorageManager() throws ClusterStorageException { - String allClusters = Gateway.getProperty("ClusterStorage"); - if (allClusters == null || allClusters.equals("")) { - Logger.warning("ClusterStorageManager.init() - no ClusterStorages defined. No persistency!"); - return; - } - StringTokenizer tok = new StringTokenizer(allClusters, ","); - clusterPriority = new String[tok.countTokens()]; - int clusterNo = 0; - ArrayList rootStores = new ArrayList(); - while (tok.hasMoreTokens()) { - ClusterStorage newStorage = null; - String newStorageClass = tok.nextToken(); - try { - try { - newStorage = (ClusterStorage)(Class.forName(newStorageClass).newInstance()); - } catch (ClassNotFoundException ex2) { - newStorage = (ClusterStorage)(Class.forName("com.c2kernel.persistency."+newStorageClass).newInstance()); - } - newStorage.open(); - Logger.msg(5, "ClusterStorageManager.init() - Cluster storage " + newStorageClass + - " initialised successfully."); - allStores.put(newStorage.getId(), newStorage); - rootStores.add(newStorage); - clusterPriority[clusterNo++] = newStorage.getId(); - - } catch (ClusterStorageException ex) { - Logger.error(ex); - throw new ClusterStorageException("ClusterStorageManager.init() - Error initialising storage handler " + newStorageClass + - ": " + ex.getMessage()); - } catch (ClassNotFoundException ex) { - throw new ClusterStorageException("ClusterStorageManager.init() - The cluster storage handler class " + newStorageClass + - " could not be found."); - } catch (InstantiationException ex) { - throw new ClusterStorageException("ClusterStorageManager.init() - The cluster storage handler class " + newStorageClass + - " could not be instantiated."); - } catch (IllegalAccessException ex) { - throw new ClusterStorageException("ClusterStorageManager.init() - The cluster storage handler class " + newStorageClass + - " was not allowed to be instantiated."); - } - } - clusterReaders.put(ClusterStorage.ROOT, rootStores); // all storages are queried for clusters at the root level - ready = true; - } - - public void close() { - for (ClusterStorage thisStorage : allStores.values()) { - try { - thisStorage.close(); - } catch (ClusterStorageException ex) { - Logger.error(ex); - } - } - ready = false; - } - - /** - * Returns the loaded storage that declare that they can handle writing or reading the specified cluster name (e.g. - * Collection, Property) Must specify if the request is a read or a write. - */ - private ArrayList findStorages(String clusterType, boolean forWrite) { - - if (!ready) { - Logger.error("ClusterStorageManager.findStorages() - called before init!"); - return null; - } - - // choose the right cache for readers or writers - HashMap> cache; - if (forWrite) - cache = clusterWriters; - else - cache = clusterReaders; - - // check to see if we've been asked to do this before - if (cache.containsKey(clusterType)) - return cache.get(clusterType); - - // not done yet, we'll have to query them all - Logger.msg(7, "ClusterStorageManager.findStorages() - finding storage for "+clusterType+" forWrite:"+forWrite); - ArrayList useableStorages = new ArrayList(); - for (String element : clusterPriority) { - ClusterStorage thisStorage = allStores.get(element); - short requiredSupport = forWrite ? ClusterStorage.WRITE : ClusterStorage.READ; - if ((thisStorage.queryClusterSupport(clusterType) & requiredSupport) == requiredSupport) { - Logger.msg(7, "ClusterStorageManager.findStorages() - Got "+thisStorage.getName()); - useableStorages.add(thisStorage); - } - } - cache.put(clusterType, useableStorages); - return useableStorages; - } - - /** - * Retrieves the ids of the next level of a cluster - * Does not look in any currently open transactions. - */ - public String[] getClusterContents(Integer sysKey, String path) throws ClusterStorageException { - //String[] retArr = new String[0]; - ArrayList contents = new ArrayList(); - // get all readers - Logger.msg(8, "ClusterStorageManager.getClusterContents() - Finding contents of "+path); - ArrayList readers = findStorages(ClusterStorage.getClusterType(path), false); - // try each in turn until we get a result - for (ClusterStorage thisReader : readers) { - try { - String[] thisArr = thisReader.getClusterContents(sysKey, path); - if (thisArr != null) { - for (int j = 0; j < thisArr.length; j++) - if (!contents.contains(thisArr[j])) { - Logger.msg(9, "ClusterStorageManager.getClusterContents() - "+thisReader.getName()+" reports "+thisArr[j]); - contents.add(thisArr[j]); - } - } - } catch (ClusterStorageException e) { - Logger.error("ClusterStorageManager.getClusterContents() - reader " + thisReader.getName() + - " could not retrieve contents of " + sysKey + "/" + path + ": " + e.getMessage()); - } - } - - String[] retArr = new String[0]; - retArr = contents.toArray(retArr); - return retArr; - } - - /** Internal get method. Retrieves clusters from ClusterStorages & maintains the memory cache */ - public C2KLocalObject get(Integer sysKeyIntObj, String path) throws ClusterStorageException, ObjectNotFoundException { - C2KLocalObject result = null; - // check cache first - SoftCache sysKeyMemCache = null; - if (memoryCache.containsKey(sysKeyIntObj)) { - sysKeyMemCache = memoryCache.get(sysKeyIntObj); - synchronized(sysKeyMemCache) { - C2KLocalObject obj = sysKeyMemCache.get(path); - if (obj != null) { - Logger.msg(7, "ClusterStorageManager.get() - found "+sysKeyIntObj+"/"+path+" in memcache"); - return obj; - } - } - } - - // special case - loading viewpoint contents - if (path.startsWith(ClusterStorage.VIEWPOINT) && - path.endsWith("/data")) { - StringTokenizer tok = new StringTokenizer(path,"/"); - if (tok.countTokens() == 4) { // to not catch viewpoints called 'data' - Outcome data = null; - Viewpoint view = (Viewpoint)get(sysKeyIntObj, path.substring(0, path.lastIndexOf("/"))); - if (view != null) - data = view.getOutcome(); - return data; - } - } - - // deal out top level remote maps - if (path.indexOf('/') == -1) { - if (path.equals(ClusterStorage.HISTORY)) - result = new History(sysKeyIntObj, null); - if (path.equals(ClusterStorage.JOB)) - result = new JobList(sysKeyIntObj, null); - if (result!=null) { - synchronized(sysKeyMemCache) { - sysKeyMemCache.put(path, result); - } - return result; - } - - } - - // else try each reader in turn until we find it - ArrayList readers = findStorages(ClusterStorage.getClusterType(path), false); - for (ClusterStorage thisReader : readers) { - try { - result = thisReader.get(sysKeyIntObj, path); - Logger.msg(7, "ClusterStorageManager.get() - reading "+path+" from "+thisReader.getName() + " for intkey=" + sysKeyIntObj); - if (result != null) { // got it! - // store it in the cache - if (sysKeyMemCache == null) { // create cache if needed - sysKeyMemCache = new SoftCache(0); - synchronized (memoryCache) { - memoryCache.put(sysKeyIntObj, sysKeyMemCache); - } - } - synchronized(sysKeyMemCache) { - sysKeyMemCache.put(path, result); - } - // then return it - return result; - } - } catch (ClusterStorageException e) { - Logger.msg(7, "ClusterStorageManager.get() - reader " + thisReader.getName() + " could not retrieve " + sysKeyIntObj + - "/" + path + ": " + e.getMessage()); - } - } - throw new ObjectNotFoundException("ClusterStorageManager.get() - Path " + path + " not found in " + sysKeyIntObj, ""); - } - - /** Internal put method. Creates or overwrites a cluster in all writers. Used when committing transactions. */ - public void put(Integer sysKeyIntObj, C2KLocalObject obj) throws ClusterStorageException { - String path = ClusterStorage.getPath(obj); - ArrayList writers = findStorages(ClusterStorage.getClusterType(path), true); - for (ClusterStorage thisWriter : writers) { - try { - Logger.msg(7, "ClusterStorageManager.put() - writing "+path+" to "+thisWriter.getName()); - thisWriter.put(sysKeyIntObj, obj); - } catch (ClusterStorageException e) { - Logger.error("ClusterStorageManager.put() - writer " + thisWriter.getName() + " could not store " + - sysKeyIntObj + "/" + path + ": " + e.getMessage()); - throw e; - } - } - // put in mem cache if that worked - SoftCache sysKeyMemCache; - if (memoryCache.containsKey(sysKeyIntObj)) - sysKeyMemCache = memoryCache.get(sysKeyIntObj); - else { - sysKeyMemCache = new SoftCache(); - synchronized (memoryCache) { - memoryCache.put(sysKeyIntObj, sysKeyMemCache); - } - } - - synchronized(sysKeyMemCache) { - sysKeyMemCache.put(path, obj); - } - - if (Logger.doLog(9)) dumpCacheContents(9); - - // transmit proxy event - EntityProxyManager.sendProxyEvent( new ProxyMessage(sysKeyIntObj.intValue(), path, ProxyMessage.ADDED)); - } - - /** Deletes a cluster from all writers */ - public void remove(Integer sysKeyIntObj, String path) throws ClusterStorageException { - ArrayList writers = findStorages(ClusterStorage.getClusterType(path), true); - for (ClusterStorage thisWriter : writers) { - try { - Logger.msg(7, "ClusterStorageManager.delete() - removing "+path+" from "+thisWriter.getName()); - thisWriter.delete(sysKeyIntObj, path); - } catch (ClusterStorageException e) { - Logger.error("ClusterStorageManager.delete() - writer " + thisWriter.getName() + " could not delete " + sysKeyIntObj + - "/" + path + ": " + e.getMessage()); - throw e; - } - } - - if (memoryCache.containsKey(sysKeyIntObj)) { - SoftCache sysKeyMemCache = memoryCache.get(sysKeyIntObj); - synchronized (sysKeyMemCache) { - sysKeyMemCache.remove(path); - } - } - - - // transmit proxy event - EntityProxyManager.sendProxyEvent( new ProxyMessage(sysKeyIntObj.intValue(), path, ProxyMessage.DELETED)); - } - - public void clearCache(Integer sysKeyIntObj, String path) { - Logger.msg(7, "CSM.clearCache() - removing "+sysKeyIntObj+"/"+path); - - if (memoryCache.containsKey(sysKeyIntObj)) { - SoftCache sysKeyMemCache = memoryCache.get(sysKeyIntObj); - synchronized(sysKeyMemCache) { - for (Iterator iter = sysKeyMemCache.keySet().iterator(); iter.hasNext();) { - String thisPath = iter.next(); - if (thisPath.startsWith(path)) { - Logger.msg(7, "CSM.clearCache() - removing "+sysKeyIntObj+"/"+thisPath); - iter.remove(); - } - } - } - } - } - - public void clearCache(Integer sysKeyIntObj) { - - Logger.msg(5, "CSM.clearCache() - removing entire cache of "+sysKeyIntObj); - - if (memoryCache.containsKey(sysKeyIntObj)) { - synchronized (memoryCache) { - if (Logger.doLog(6)) { - SoftCache sysKeyMemCache = memoryCache.get(sysKeyIntObj); - int size = sysKeyMemCache.size(); - Logger.msg(6, "CSM.clearCache() - "+size+" objects to remove."); - } - memoryCache.remove(sysKeyIntObj); - } - } - else - Logger.msg(6, "CSM.clearCache() - No objects cached"); - } - - public void clearCache() { - synchronized (memoryCache) { - memoryCache.clear(); - } - Logger.msg(5, "CSM.clearCache() - cleared entire cache, "+memoryCache.size()+" entities."); - } - - public void dumpCacheContents(int logLevel) { - if (!Logger.doLog(logLevel)) return; - synchronized(memoryCache) { - for (Integer sysKey : memoryCache.keySet()) { - Logger.msg(logLevel, "Cached Objects of Entity "+sysKey); - SoftCache sysKeyMemCache = memoryCache.get(sysKey); - try { - synchronized(sysKeyMemCache) { - for (Object name : sysKeyMemCache.keySet()) { - String path = (String) name; - try { - Logger.msg(logLevel, " Path "+path+": "+sysKeyMemCache.get(path).getClass().getName()); - } catch (NullPointerException e) { - Logger.msg(logLevel, " Path "+path+": reaped"); - } - } - } - } catch (ConcurrentModificationException ex) { - Logger.msg(logLevel, "Cache modified - aborting"); - } - } - Logger.msg(logLevel, "Total number of cached entities: "+memoryCache.size()); - } - } - - public Object query(String id, Object query) throws ClusterStorageException { - ClusterStorage requiredStorage = allStores.get(id); - if (requiredStorage == null) - throw new ClusterStorageException("Storage "+id+" not found."); - return requiredStorage.query(query); - } - - public String queryToXML(String id, String query, boolean genericFormat) throws ClusterStorageException { - ClusterStorage requiredStorage = allStores.get(id); - if (requiredStorage == null) - throw new ClusterStorageException("Storage "+id+" not found."); - return requiredStorage.queryToXML(query, genericFormat); - } -} -- cgit v1.2.3