public QueryResult queryOnPartition(String mapName, Predicate predicate, int partitionId) {
final QueryResult result = new QueryResult();
List<QueryEntry> list = new LinkedList<QueryEntry>();
PartitionContainer container = getPartitionContainer(partitionId);
RecordStore recordStore = container.getRecordStore(mapName);
Map<Data, Record> records = recordStore.getReadonlyRecordMap();
SerializationService serializationService = nodeEngine.getSerializationService();
final PagingPredicate pagingPredicate =
predicate instanceof PagingPredicate ? (PagingPredicate) predicate : null;
Comparator<Map.Entry> wrapperComparator = SortingUtil.newComparator(pagingPredicate);
for (Record record : records.values()) {
Data key = record.getKey();
Object value = record.getValue();
if (value == null) {
continue;
}
QueryEntry queryEntry = new QueryEntry(serializationService, key, key, value);
if (predicate.apply(queryEntry)) {
if (pagingPredicate != null) {
Map.Entry anchor = pagingPredicate.getAnchor();
if (anchor != null
&& SortingUtil.compare(
pagingPredicate.getComparator(),
pagingPredicate.getIterationType(),
anchor,
queryEntry)
>= 0) {
continue;
}
}
list.add(queryEntry);
}
}
if (pagingPredicate != null) {
Collections.sort(list, wrapperComparator);
if (list.size() > pagingPredicate.getPageSize()) {
list = list.subList(0, pagingPredicate.getPageSize());
}
}
for (QueryEntry entry : list) {
result.add(
new QueryResultEntryImpl(entry.getKeyData(), entry.getKeyData(), entry.getValueData()));
}
return result;
}
public MapMergePolicy getMergePolicy(String mergePolicyName) {
MapMergePolicy mergePolicy = mergePolicyMap.get(mergePolicyName);
if (mergePolicy == null && mergePolicyName != null) {
try {
// check if user has entered custom class name instead of policy name
mergePolicy =
ClassLoaderUtil.newInstance(nodeEngine.getConfigClassLoader(), mergePolicyName);
mergePolicyMap.put(mergePolicyName, mergePolicy);
} catch (Exception e) {
logger.severe(e);
throw ExceptionUtil.rethrow(e);
}
}
if (mergePolicy == null) {
return mergePolicyMap.get(MapConfig.DEFAULT_MAP_MERGE_POLICY);
}
return mergePolicy;
}
public MapService(NodeEngine nodeEngine) {
this.nodeEngine = nodeEngine;
this.mapEvictionManager = new MapEvictionManager(this);
this.replicaWaitSecondsForScheduledTasks =
getNodeEngine()
.getGroupProperties()
.MAP_REPLICA_WAIT_SECONDS_FOR_SCHEDULED_TASKS
.getInteger()
* 1000;
logger = nodeEngine.getLogger(MapService.class.getName());
partitionContainers =
new PartitionContainer[nodeEngine.getPartitionService().getPartitionCount()];
ownedPartitions = new AtomicReference<List<Integer>>();
mergePolicyMap = new ConcurrentHashMap<String, MapMergePolicy>();
mergePolicyMap.put(PutIfAbsentMapMergePolicy.class.getName(), new PutIfAbsentMapMergePolicy());
mergePolicyMap.put(HigherHitsMapMergePolicy.class.getName(), new HigherHitsMapMergePolicy());
mergePolicyMap.put(PassThroughMergePolicy.class.getName(), new PassThroughMergePolicy());
mergePolicyMap.put(
LatestUpdateMapMergePolicy.class.getName(), new LatestUpdateMapMergePolicy());
}
public LocalMapStatsImpl createLocalMapStats(String mapName) {
MapContainer mapContainer = getMapContainer(mapName);
LocalMapStatsImpl localMapStats = getLocalMapStatsImpl(mapName);
if (!mapContainer.getMapConfig().isStatisticsEnabled()) {
return localMapStats;
}
long ownedEntryCount = 0;
long backupEntryCount = 0;
long dirtyCount = 0;
long ownedEntryMemoryCost = 0;
long backupEntryMemoryCost = 0;
long hits = 0;
long lockedEntryCount = 0;
long heapCost = 0;
int backupCount = mapContainer.getTotalBackupCount();
ClusterService clusterService = nodeEngine.getClusterService();
final InternalPartitionService partitionService = nodeEngine.getPartitionService();
Address thisAddress = clusterService.getThisAddress();
for (int partitionId = 0; partitionId < partitionService.getPartitionCount(); partitionId++) {
InternalPartition partition = partitionService.getPartition(partitionId);
Address owner = partition.getOwner();
if (owner == null) {
// no-op because no owner is set yet. Therefor we don't know anything about the map
continue;
}
if (owner.equals(thisAddress)) {
PartitionContainer partitionContainer = getPartitionContainer(partitionId);
RecordStore recordStore = partitionContainer.getExistingRecordStore(mapName);
// we don't want to force loading the record store because we are loading statistics. So
// that is why
// we ask for 'getExistingRecordStore' instead of 'getRecordStore' which does the load.
if (recordStore != null) {
heapCost += recordStore.getHeapCost();
Map<Data, Record> records = recordStore.getReadonlyRecordMap();
for (Record record : records.values()) {
RecordStatistics stats = record.getStatistics();
// there is map store and the record is dirty (waits to be stored)
ownedEntryCount++;
ownedEntryMemoryCost += record.getCost();
localMapStats.setLastAccessTime(stats.getLastAccessTime());
localMapStats.setLastUpdateTime(stats.getLastUpdateTime());
hits += stats.getHits();
if (recordStore.isLocked(record.getKey())) {
lockedEntryCount++;
}
}
}
} else {
for (int replica = 1; replica <= backupCount; replica++) {
Address replicaAddress = partition.getReplicaAddress(replica);
int tryCount = 30;
// wait if the partition table is not updated yet
while (replicaAddress == null
&& clusterService.getSize() > backupCount
&& tryCount-- > 0) {
try {
Thread.sleep(100);
} catch (InterruptedException e) {
throw ExceptionUtil.rethrow(e);
}
replicaAddress = partition.getReplicaAddress(replica);
}
if (replicaAddress != null && replicaAddress.equals(thisAddress)) {
PartitionContainer partitionContainer = getPartitionContainer(partitionId);
RecordStore recordStore = partitionContainer.getRecordStore(mapName);
heapCost += recordStore.getHeapCost();
Map<Data, Record> records = recordStore.getReadonlyRecordMap();
for (Record record : records.values()) {
backupEntryCount++;
backupEntryMemoryCost += record.getCost();
}
} else if (replicaAddress == null && clusterService.getSize() > backupCount) {
logger.warning("Partition: " + partition + ", replica: " + replica + " has no owner!");
}
}
}
}
if (mapContainer.getMapStoreScheduler() != null) {
dirtyCount = mapContainer.getMapStoreScheduler().size();
}
localMapStats.setBackupCount(backupCount);
localMapStats.setDirtyEntryCount(zeroOrPositive(dirtyCount));
localMapStats.setLockedEntryCount(zeroOrPositive(lockedEntryCount));
localMapStats.setHits(zeroOrPositive(hits));
localMapStats.setOwnedEntryCount(zeroOrPositive(ownedEntryCount));
localMapStats.setBackupEntryCount(zeroOrPositive(backupEntryCount));
localMapStats.setOwnedEntryMemoryCost(zeroOrPositive(ownedEntryMemoryCost));
localMapStats.setBackupEntryMemoryCost(zeroOrPositive(backupEntryMemoryCost));
// add near cache heap cost.
heapCost += mapContainer.getNearCacheSizeEstimator().getSize();
localMapStats.setHeapCost(heapCost);
if (mapContainer.getMapConfig().isNearCacheEnabled()) {
NearCacheStatsImpl nearCacheStats = getNearCache(mapName).getNearCacheStats();
localMapStats.setNearCacheStats(nearCacheStats);
}
return localMapStats;
}