/*
|
* CDDL HEADER START
|
*
|
* The contents of this file are subject to the terms of the
|
* Common Development and Distribution License, Version 1.0 only
|
* (the "License"). You may not use this file except in compliance
|
* with the License.
|
*
|
* You can obtain a copy of the license at legal-notices/CDDLv1_0.txt
|
* or http://forgerock.org/license/CDDLv1.0.html.
|
* See the License for the specific language governing permissions
|
* and limitations under the License.
|
*
|
* When distributing Covered Code, include this CDDL HEADER in each
|
* file and include the License file at legal-notices/CDDLv1_0.txt.
|
* If applicable, add the following below this CDDL HEADER, with the
|
* fields enclosed by brackets "[]" replaced with your own identifying
|
* information:
|
* Portions Copyright [yyyy] [name of copyright owner]
|
*
|
* CDDL HEADER END
|
*
|
*
|
* Copyright 2006-2010 Sun Microsystems, Inc.
|
* Portions Copyright 2012-2014 ForgeRock AS
|
*/
|
package org.opends.server.backends.jeb;
|
|
import java.util.*;
|
|
import org.forgerock.i18n.slf4j.LocalizedLogger;
|
import org.forgerock.opendj.ldap.ConditionResult;
|
import org.opends.server.backends.jeb.importLDIF.ImportIDSet;
|
import org.opends.server.types.DirectoryException;
|
import org.opends.server.types.Entry;
|
import org.opends.server.types.Modification;
|
import org.opends.server.util.StaticUtils;
|
|
import com.sleepycat.je.*;
|
|
import static org.opends.messages.JebMessages.*;
|
|
/**
|
* Represents an index implemented by a JE database in which each key maps to
|
* a set of entry IDs. The key is a byte array, and is constructed from some
|
* normalized form of an attribute value (or fragment of a value) appearing
|
* in the entry.
|
*/
|
public class Index extends DatabaseContainer
|
{
|
private static final LocalizedLogger logger = LocalizedLogger.getLoggerForThisClass();
|
|
/**
|
* The indexer object to construct index keys from LDAP attribute values.
|
*/
|
public Indexer indexer;
|
|
/**
|
* The comparator for index keys.
|
*/
|
private final Comparator<byte[]> comparator;
|
|
/**
|
* The limit on the number of entry IDs that may be indexed by one key.
|
*/
|
private int indexEntryLimit;
|
|
/**
|
* Limit on the number of entry IDs that may be retrieved by cursoring
|
* through an index.
|
*/
|
private final int cursorEntryLimit;
|
|
/**
|
* Number of keys that have exceeded the entry limit since this
|
* object was created.
|
*/
|
private int entryLimitExceededCount;
|
|
/**
|
* The max number of tries to rewrite phantom records.
|
*/
|
final int phantomWriteRetires = 3;
|
|
/**
|
* Whether to maintain a count of IDs for a key once the entry limit
|
* has exceeded.
|
*/
|
boolean maintainCount;
|
|
private final State state;
|
|
/**
|
* A flag to indicate if this index should be trusted to be consistent
|
* with the entries database. If not trusted, we assume that existing
|
* entryIDSets for a key is still accurate. However, keys that do not
|
* exist are undefined instead of an empty entryIDSet. The following
|
* rules will be observed when the index is not trusted:
|
*
|
* - no entryIDs will be added to a non-existing key.
|
* - undefined entryIdSet will be returned whenever a key is not found.
|
*/
|
private boolean trusted = false;
|
|
/**
|
* A flag to indicate if a rebuild process is running on this index.
|
* During the rebuild process, we assume that no entryIDSets are
|
* accurate and return an undefined set on all read operations.
|
* However all write opeations will succeed. The rebuildRunning
|
* flag overrides all behaviours of the trusted flag.
|
*/
|
private boolean rebuildRunning = false;
|
|
//Thread local area to store per thread cursors.
|
private final ThreadLocal<Cursor> curLocal = new ThreadLocal<Cursor>();
|
private final ImportIDSet newImportIDSet;
|
|
/**
|
* Create a new index object.
|
* @param name The name of the index database within the entryContainer.
|
* @param indexer The indexer object to construct index keys from LDAP
|
* attribute values.
|
* @param state The state database to persist index state info.
|
* @param indexEntryLimit The configured limit on the number of entry IDs
|
* that may be indexed by one key.
|
* @param cursorEntryLimit The configured limit on the number of entry IDs
|
* @param maintainCount Whether to maintain a count of IDs for a key once
|
* the entry limit has exceeded.
|
* @param env The JE Environemnt
|
* @param entryContainer The database entryContainer holding this index.
|
* @throws DatabaseException If an error occurs in the JE database.
|
*/
|
@SuppressWarnings("unchecked")
|
public Index(String name, Indexer indexer, State state,
|
int indexEntryLimit, int cursorEntryLimit, boolean maintainCount,
|
Environment env, EntryContainer entryContainer)
|
throws DatabaseException
|
{
|
super(name, env, entryContainer);
|
this.indexer = indexer;
|
this.comparator = indexer.getComparator();
|
this.indexEntryLimit = indexEntryLimit;
|
this.cursorEntryLimit = cursorEntryLimit;
|
this.maintainCount = maintainCount;
|
this.newImportIDSet = new ImportIDSet(indexEntryLimit,
|
indexEntryLimit, maintainCount);
|
DatabaseConfig dbNodupsConfig = new DatabaseConfig();
|
|
if(env.getConfig().getReadOnly())
|
{
|
dbNodupsConfig.setReadOnly(true);
|
dbNodupsConfig.setAllowCreate(false);
|
dbNodupsConfig.setTransactional(false);
|
}
|
else if(!env.getConfig().getTransactional())
|
{
|
dbNodupsConfig.setAllowCreate(true);
|
dbNodupsConfig.setTransactional(false);
|
dbNodupsConfig.setDeferredWrite(true);
|
}
|
else
|
{
|
dbNodupsConfig.setAllowCreate(true);
|
dbNodupsConfig.setTransactional(true);
|
}
|
|
this.dbConfig = dbNodupsConfig;
|
this.dbConfig.setOverrideBtreeComparator(true);
|
this.dbConfig.setBtreeComparator((Class<? extends Comparator<byte[]>>)
|
comparator.getClass());
|
|
this.state = state;
|
|
this.trusted = state.getIndexTrustState(null, this);
|
if(!trusted && entryContainer.getHighestEntryID().equals(new EntryID(0)))
|
{
|
// If there are no entries in the entry container then there
|
// is no reason why this index can't be upgraded to trusted.
|
setTrusted(null, true);
|
}
|
|
}
|
|
/**
|
* Add an add entry ID operation into a index buffer.
|
*
|
* @param buffer The index buffer to insert the ID into.
|
* @param keyBytes The index key bytes.
|
* @param entryID The entry ID.
|
* @return True if the entry ID is inserted or ignored because the entry limit
|
* count is exceeded. False if it already exists in the entry ID set
|
* for the given key.
|
*/
|
public boolean insertID(IndexBuffer buffer, byte[] keyBytes,
|
EntryID entryID)
|
{
|
TreeMap<byte[], IndexBuffer.BufferedIndexValues> bufferedOperations =
|
buffer.getBufferedIndex(this);
|
IndexBuffer.BufferedIndexValues values = null;
|
|
if(bufferedOperations == null)
|
{
|
bufferedOperations = new TreeMap<byte[],
|
IndexBuffer.BufferedIndexValues>(comparator);
|
buffer.putBufferedIndex(this, bufferedOperations);
|
}
|
else
|
{
|
values = bufferedOperations.get(keyBytes);
|
}
|
|
if(values == null)
|
{
|
values = new IndexBuffer.BufferedIndexValues();
|
bufferedOperations.put(keyBytes, values);
|
}
|
|
if(values.deletedIDs != null && values.deletedIDs.contains(entryID))
|
{
|
values.deletedIDs.remove(entryID);
|
return true;
|
}
|
|
if(values.addedIDs == null)
|
{
|
values.addedIDs = new EntryIDSet(keyBytes, null);
|
}
|
|
values.addedIDs.add(entryID);
|
return true;
|
}
|
|
/**
|
* Insert an entry ID into the set of IDs indexed by a given key.
|
*
|
* @param txn A database transaction, or null if none is required.
|
* @param key The index key.
|
* @param entryID The entry ID.
|
* @return True if the entry ID is inserted or ignored because the entry limit
|
* count is exceeded. False if it already exists in the entry ID set
|
* for the given key.
|
* @throws DatabaseException If an error occurs in the JE database.
|
*/
|
public boolean insertID(Transaction txn, DatabaseEntry key, EntryID entryID)
|
throws DatabaseException
|
{
|
OperationStatus status;
|
DatabaseEntry entryIDData = entryID.getDatabaseEntry();
|
DatabaseEntry data = new DatabaseEntry();
|
boolean success = false;
|
|
if(maintainCount)
|
{
|
for(int i = 0; i < phantomWriteRetires; i++)
|
{
|
if(insertIDWithRMW(txn, key, data, entryIDData, entryID) ==
|
OperationStatus.SUCCESS)
|
{
|
return true;
|
}
|
}
|
}
|
else
|
{
|
status = read(txn, key, data, LockMode.READ_COMMITTED);
|
if(status == OperationStatus.SUCCESS)
|
{
|
EntryIDSet entryIDList =
|
new EntryIDSet(key.getData(), data.getData());
|
|
if (entryIDList.isDefined())
|
{
|
for(int i = 0; i < phantomWriteRetires; i++)
|
{
|
if(insertIDWithRMW(txn, key, data, entryIDData, entryID) ==
|
OperationStatus.SUCCESS)
|
{
|
return true;
|
}
|
}
|
}
|
}
|
else
|
{
|
if(rebuildRunning || trusted)
|
{
|
status = insert(txn, key, entryIDData);
|
if(status == OperationStatus.KEYEXIST)
|
{
|
for(int i = 1; i < phantomWriteRetires; i++)
|
{
|
if(insertIDWithRMW(txn, key, data, entryIDData, entryID) ==
|
OperationStatus.SUCCESS)
|
{
|
return true;
|
}
|
}
|
}
|
}
|
else
|
{
|
return true;
|
}
|
}
|
}
|
|
return success;
|
}
|
|
|
|
private void
|
deleteKey(DatabaseEntry key, ImportIDSet importIdSet,
|
DatabaseEntry data) throws DatabaseException {
|
OperationStatus status = read(null, key, data, LockMode.DEFAULT);
|
if(status == OperationStatus.SUCCESS) {
|
newImportIDSet.clear(false);
|
newImportIDSet.remove(data.getData(), importIdSet);
|
if(newImportIDSet.isDefined() && (newImportIDSet.size() == 0))
|
{
|
delete(null, key);
|
}
|
else
|
{
|
data.setData(newImportIDSet.toDatabase());
|
put(null, key, data);
|
}
|
} else {
|
// Should never happen -- the keys should always be there.
|
throw new RuntimeException();
|
}
|
}
|
|
|
private void
|
insertKey(DatabaseEntry key, ImportIDSet importIdSet,
|
DatabaseEntry data) throws DatabaseException {
|
OperationStatus status = read(null, key, data, LockMode.DEFAULT);
|
if(status == OperationStatus.SUCCESS) {
|
newImportIDSet.clear(false);
|
if (newImportIDSet.merge(data.getData(), importIdSet))
|
{
|
entryLimitExceededCount++;
|
}
|
data.setData(newImportIDSet.toDatabase());
|
put(null, key, data);
|
} else if(status == OperationStatus.NOTFOUND) {
|
if(!importIdSet.isDefined()) {
|
entryLimitExceededCount++;
|
}
|
data.setData(importIdSet.toDatabase());
|
put(null, key, data);
|
} else {
|
// Should never happen during import.
|
throw new RuntimeException();
|
}
|
}
|
|
|
/**
|
* Insert the specified import ID set into this index. Creates a DB
|
* cursor if needed.
|
*
|
* @param key The key to add the set to.
|
* @param importIdSet The set of import IDs.
|
* @param data Database entry to reuse for read.
|
* @throws DatabaseException If a database error occurs.
|
*/
|
public void
|
insert(DatabaseEntry key, ImportIDSet importIdSet,
|
DatabaseEntry data) throws DatabaseException {
|
Cursor cursor = curLocal.get();
|
if(cursor == null) {
|
cursor = openCursor(null, null);
|
curLocal.set(cursor);
|
}
|
insertKey(key, importIdSet, data);
|
}
|
|
|
/**
|
* Delete the specified import ID set from the import ID set associated with
|
* the key.
|
*
|
* @param key The key to delete the set from.
|
* @param importIdSet The import ID set to delete.
|
* @param data A database entry to use for data.
|
*
|
* @throws DatabaseException If a database error occurs.
|
*/
|
public void
|
delete(DatabaseEntry key, ImportIDSet importIdSet,
|
DatabaseEntry data) throws DatabaseException {
|
Cursor cursor = curLocal.get();
|
if(cursor == null) {
|
cursor = openCursor(null, null);
|
curLocal.set(cursor);
|
}
|
deleteKey(key, importIdSet, data);
|
}
|
|
|
/**
|
* Add the specified import ID set to the provided keys in the keyset.
|
*
|
* @param importIDSet A import ID set to use.
|
* @param keySet The set containing the keys.
|
* @param keyData A key database entry to use.
|
* @param data A database entry to use for data.
|
* @return <CODE>True</CODE> if the insert was successful.
|
* @throws DatabaseException If a database error occurs.
|
*/
|
|
public synchronized
|
boolean insert(ImportIDSet importIDSet, Set<byte[]> keySet,
|
DatabaseEntry keyData, DatabaseEntry data)
|
throws DatabaseException {
|
for(byte[] key : keySet) {
|
keyData.setData(key);
|
insert(keyData, importIDSet, data);
|
}
|
keyData.setData(null);
|
data.setData(null);
|
return true;
|
}
|
|
private OperationStatus insertIDWithRMW(Transaction txn, DatabaseEntry key,
|
DatabaseEntry data,
|
DatabaseEntry entryIDData,
|
EntryID entryID)
|
throws DatabaseException
|
{
|
OperationStatus status;
|
|
status = read(txn, key, data, LockMode.RMW);
|
if(status == OperationStatus.SUCCESS)
|
{
|
EntryIDSet entryIDList =
|
new EntryIDSet(key.getData(), data.getData());
|
if (entryIDList.isDefined() && indexEntryLimit > 0 &&
|
entryIDList.size() >= indexEntryLimit)
|
{
|
if(maintainCount)
|
{
|
entryIDList = new EntryIDSet(entryIDList.size());
|
}
|
else
|
{
|
entryIDList = new EntryIDSet();
|
}
|
entryLimitExceededCount++;
|
|
if(logger.isTraceEnabled())
|
{
|
StringBuilder builder = new StringBuilder();
|
StaticUtils.byteArrayToHexPlusAscii(builder, key.getData(), 4);
|
logger.trace("Index entry exceeded in index %s. " +
|
"Limit: %d. ID list size: %d.\nKey:%s",
|
name, indexEntryLimit, entryIDList.size(), builder);
|
}
|
}
|
|
entryIDList.add(entryID);
|
|
byte[] after = entryIDList.toDatabase();
|
data.setData(after);
|
return put(txn, key, data);
|
}
|
else
|
{
|
if(rebuildRunning || trusted)
|
{
|
return insert(txn, key, entryIDData);
|
}
|
else
|
{
|
return OperationStatus.SUCCESS;
|
}
|
}
|
}
|
|
/**
|
* Update the set of entry IDs for a given key.
|
*
|
* @param txn A database transaction, or null if none is required.
|
* @param key The database key.
|
* @param deletedIDs The IDs to remove for the key.
|
* @param addedIDs the IDs to add for the key.
|
* @throws DatabaseException If a database error occurs.
|
*/
|
void updateKey(Transaction txn, DatabaseEntry key,
|
EntryIDSet deletedIDs, EntryIDSet addedIDs)
|
throws DatabaseException
|
{
|
OperationStatus status;
|
DatabaseEntry data = new DatabaseEntry();
|
|
if(deletedIDs == null && addedIDs == null)
|
{
|
status = delete(txn, key);
|
|
if(status != OperationStatus.SUCCESS)
|
{
|
if(logger.isTraceEnabled())
|
{
|
StringBuilder builder = new StringBuilder();
|
StaticUtils.byteArrayToHexPlusAscii(builder, key.getData(), 4);
|
logger.trace("The expected key does not exist in the index %s.\nKey:%s ", name, builder);
|
}
|
}
|
|
return;
|
}
|
|
// Handle cases where nothing is changed early to avoid
|
// DB access.
|
if((deletedIDs == null || deletedIDs.size() == 0) &&
|
(addedIDs == null || addedIDs.size() == 0))
|
{
|
return;
|
}
|
|
if(maintainCount)
|
{
|
for(int i = 0; i < phantomWriteRetires; i++)
|
{
|
if(updateKeyWithRMW(txn, key, data, deletedIDs, addedIDs) ==
|
OperationStatus.SUCCESS)
|
{
|
return;
|
}
|
}
|
}
|
else
|
{
|
status = read(txn, key, data, LockMode.READ_COMMITTED);
|
if(status == OperationStatus.SUCCESS)
|
{
|
EntryIDSet entryIDList =
|
new EntryIDSet(key.getData(), data.getData());
|
|
if (entryIDList.isDefined())
|
{
|
for(int i = 0; i < phantomWriteRetires; i++)
|
{
|
if(updateKeyWithRMW(txn, key, data, deletedIDs, addedIDs) ==
|
OperationStatus.SUCCESS)
|
{
|
return;
|
}
|
}
|
}
|
}
|
else
|
{
|
if(deletedIDs != null && !rebuildRunning && trusted)
|
{
|
if(logger.isTraceEnabled())
|
{
|
StringBuilder builder = new StringBuilder();
|
StaticUtils.byteArrayToHexPlusAscii(builder, key.getData(), 4);
|
logger.trace("The expected key does not exist in the index %s.\nKey:%s ", name, builder);
|
}
|
|
setTrusted(txn, false);
|
logger.error(ERR_JEB_INDEX_CORRUPT_REQUIRES_REBUILD, name);
|
}
|
|
if((rebuildRunning || trusted) && addedIDs != null &&
|
addedIDs.size() > 0)
|
{
|
data.setData(addedIDs.toDatabase());
|
|
status = insert(txn, key, data);
|
if(status == OperationStatus.KEYEXIST)
|
{
|
for(int i = 1; i < phantomWriteRetires; i++)
|
{
|
if(updateKeyWithRMW(txn, key, data, deletedIDs, addedIDs) ==
|
OperationStatus.SUCCESS)
|
{
|
return;
|
}
|
}
|
}
|
}
|
}
|
}
|
}
|
|
private OperationStatus updateKeyWithRMW(Transaction txn,
|
DatabaseEntry key,
|
DatabaseEntry data,
|
EntryIDSet deletedIDs,
|
EntryIDSet addedIDs)
|
throws DatabaseException
|
{
|
OperationStatus status;
|
|
status = read(txn, key, data, LockMode.RMW);
|
if(status == OperationStatus.SUCCESS)
|
{
|
EntryIDSet entryIDList =
|
new EntryIDSet(key.getData(), data.getData());
|
|
if(addedIDs != null)
|
{
|
if(entryIDList.isDefined() && indexEntryLimit > 0)
|
{
|
long idCountDelta = addedIDs.size();
|
if(deletedIDs != null)
|
{
|
idCountDelta -= deletedIDs.size();
|
}
|
if(idCountDelta + entryIDList.size() >= indexEntryLimit)
|
{
|
if(maintainCount)
|
{
|
entryIDList = new EntryIDSet(entryIDList.size() + idCountDelta);
|
}
|
else
|
{
|
entryIDList = new EntryIDSet();
|
}
|
entryLimitExceededCount++;
|
|
if(logger.isTraceEnabled())
|
{
|
StringBuilder builder = new StringBuilder();
|
StaticUtils.byteArrayToHexPlusAscii(builder, key.getData(), 4);
|
logger.trace("Index entry exceeded in index %s. " +
|
"Limit: %d. ID list size: %d.\nKey:%s",
|
name, indexEntryLimit, idCountDelta + addedIDs.size(), builder);
|
|
}
|
}
|
else
|
{
|
entryIDList.addAll(addedIDs);
|
if(deletedIDs != null)
|
{
|
entryIDList.deleteAll(deletedIDs);
|
}
|
}
|
}
|
else
|
{
|
entryIDList.addAll(addedIDs);
|
if(deletedIDs != null)
|
{
|
entryIDList.deleteAll(deletedIDs);
|
}
|
}
|
}
|
else if(deletedIDs != null)
|
{
|
entryIDList.deleteAll(deletedIDs);
|
}
|
|
byte[] after = entryIDList.toDatabase();
|
if (after == null)
|
{
|
// No more IDs, so remove the key. If index is not
|
// trusted then this will cause all subsequent reads
|
// for this key to return undefined set.
|
return delete(txn, key);
|
}
|
else
|
{
|
data.setData(after);
|
return put(txn, key, data);
|
}
|
}
|
else
|
{
|
if(deletedIDs != null && !rebuildRunning && trusted)
|
{
|
if(logger.isTraceEnabled())
|
{
|
StringBuilder builder = new StringBuilder();
|
StaticUtils.byteArrayToHexPlusAscii(builder, key.getData(), 4);
|
logger.trace("The expected key does not exist in the index %s.\nKey:%s", name, builder);
|
}
|
|
setTrusted(txn, false);
|
logger.error(ERR_JEB_INDEX_CORRUPT_REQUIRES_REBUILD, name);
|
}
|
|
if((rebuildRunning || trusted) && addedIDs != null && addedIDs.size() > 0)
|
{
|
data.setData(addedIDs.toDatabase());
|
return insert(txn, key, data);
|
}
|
return OperationStatus.SUCCESS;
|
}
|
}
|
|
/**
|
* Add an remove entry ID operation into a index buffer.
|
*
|
* @param buffer The index buffer to insert the ID into.
|
* @param keyBytes The index key bytes.
|
* @param entryID The entry ID.
|
* @return True if the entry ID is inserted or ignored because the entry limit
|
* count is exceeded. False if it already exists in the entry ID set
|
* for the given key.
|
*/
|
public boolean removeID(IndexBuffer buffer, byte[] keyBytes,
|
EntryID entryID)
|
{
|
TreeMap<byte[], IndexBuffer.BufferedIndexValues> bufferedOperations =
|
buffer.getBufferedIndex(this);
|
IndexBuffer.BufferedIndexValues values = null;
|
|
if(bufferedOperations == null)
|
{
|
bufferedOperations = new TreeMap<byte[],
|
IndexBuffer.BufferedIndexValues>(comparator);
|
buffer.putBufferedIndex(this, bufferedOperations);
|
}
|
else
|
{
|
values = bufferedOperations.get(keyBytes);
|
}
|
|
if(values == null)
|
{
|
values = new IndexBuffer.BufferedIndexValues();
|
bufferedOperations.put(keyBytes, values);
|
}
|
|
if(values.addedIDs != null && values.addedIDs.contains(entryID))
|
{
|
values.addedIDs.remove(entryID);
|
return true;
|
}
|
|
if(values.deletedIDs == null)
|
{
|
values.deletedIDs = new EntryIDSet(keyBytes, null);
|
}
|
|
values.deletedIDs.add(entryID);
|
return true;
|
}
|
|
/**
|
* Remove an entry ID from the set of IDs indexed by a given key.
|
*
|
* @param txn A database transaction, or null if none is required.
|
* @param key The index key.
|
* @param entryID The entry ID.
|
* @throws DatabaseException If an error occurs in the JE database.
|
*/
|
public void removeID(Transaction txn, DatabaseEntry key, EntryID entryID)
|
throws DatabaseException
|
{
|
OperationStatus status;
|
DatabaseEntry data = new DatabaseEntry();
|
|
if(maintainCount)
|
{
|
removeIDWithRMW(txn, key, data, entryID);
|
}
|
else
|
{
|
status = read(txn, key, data, LockMode.READ_COMMITTED);
|
if(status == OperationStatus.SUCCESS)
|
{
|
EntryIDSet entryIDList = new EntryIDSet(key.getData(), data.getData());
|
if(entryIDList.isDefined())
|
{
|
removeIDWithRMW(txn, key, data, entryID);
|
}
|
}
|
else
|
{
|
// Ignore failures if rebuild is running since a empty entryIDset
|
// will probably not be rebuilt.
|
if(trusted && !rebuildRunning)
|
{
|
if(logger.isTraceEnabled())
|
{
|
StringBuilder builder = new StringBuilder();
|
StaticUtils.byteArrayToHexPlusAscii(builder, key.getData(), 4);
|
logger.trace("The expected key does not exist in the index %s.\nKey:%s",name, builder);
|
}
|
|
setTrusted(txn, false);
|
logger.error(ERR_JEB_INDEX_CORRUPT_REQUIRES_REBUILD, name);
|
}
|
}
|
}
|
}
|
|
/**
|
* Delete specified entry ID from all keys in the provided key set.
|
*
|
* @param txn A Transaction.
|
* @param keySet A set of keys.
|
* @param entryID The entry ID to delete.
|
* @throws DatabaseException If a database error occurs.
|
*/
|
public
|
void delete(Transaction txn, Set<byte[]> keySet, EntryID entryID)
|
throws DatabaseException {
|
setTrusted(txn, false);
|
for(byte[] key : keySet) {
|
removeIDWithRMW(txn, new DatabaseEntry(key),
|
new DatabaseEntry(), entryID);
|
}
|
setTrusted(txn, true);
|
}
|
|
private void removeIDWithRMW(Transaction txn, DatabaseEntry key,
|
DatabaseEntry data, EntryID entryID)
|
throws DatabaseException
|
{
|
OperationStatus status;
|
status = read(txn, key, data, LockMode.RMW);
|
|
if (status == OperationStatus.SUCCESS)
|
{
|
EntryIDSet entryIDList = new EntryIDSet(key.getData(), data.getData());
|
// Ignore failures if rebuild is running since the entry ID is
|
// probably already removed.
|
if (!entryIDList.remove(entryID) && !rebuildRunning && trusted)
|
{
|
if(logger.isTraceEnabled())
|
{
|
StringBuilder builder = new StringBuilder();
|
StaticUtils.byteArrayToHexPlusAscii(builder, key.getData(), 4);
|
logger.trace("The expected entry ID does not exist in " +
|
"the entry ID list for index %s.\nKey:%s", name, builder);
|
}
|
|
setTrusted(txn, false);
|
logger.error(ERR_JEB_INDEX_CORRUPT_REQUIRES_REBUILD, name);
|
}
|
else
|
{
|
byte[] after = entryIDList.toDatabase();
|
if (after == null)
|
{
|
// No more IDs, so remove the key. If index is not
|
// trusted then this will cause all subsequent reads
|
// for this key to return undefined set.
|
delete(txn, key);
|
}
|
else
|
{
|
data.setData(after);
|
put(txn, key, data);
|
}
|
}
|
}
|
else
|
{
|
// Ignore failures if rebuild is running since a empty entryIDset
|
// will probably not be rebuilt.
|
if(trusted && !rebuildRunning)
|
{
|
if(logger.isTraceEnabled())
|
{
|
StringBuilder builder = new StringBuilder();
|
StaticUtils.byteArrayToHexPlusAscii(builder, key.getData(), 4);
|
logger.trace("The expected key does not exist in the index %s.\nKey:%s", name, builder);
|
}
|
|
setTrusted(txn, false);
|
logger.error(ERR_JEB_INDEX_CORRUPT_REQUIRES_REBUILD, name);
|
}
|
}
|
}
|
|
/**
|
* Buffered delete of a key from the JE database.
|
* @param buffer The index buffer to use to store the deleted keys
|
* @param keyBytes The index key bytes.
|
*/
|
public void delete(IndexBuffer buffer, byte[] keyBytes)
|
{
|
TreeMap<byte[], IndexBuffer.BufferedIndexValues> bufferedOperations =
|
buffer.getBufferedIndex(this);
|
IndexBuffer.BufferedIndexValues values = null;
|
|
if(bufferedOperations == null)
|
{
|
bufferedOperations = new TreeMap<byte[],
|
IndexBuffer.BufferedIndexValues>(comparator);
|
buffer.putBufferedIndex(this, bufferedOperations);
|
}
|
else
|
{
|
values = bufferedOperations.get(keyBytes);
|
}
|
|
if(values == null)
|
{
|
values = new IndexBuffer.BufferedIndexValues();
|
bufferedOperations.put(keyBytes, values);
|
}
|
}
|
|
/**
|
* Check if an entry ID is in the set of IDs indexed by a given key.
|
*
|
* @param txn A database transaction, or null if none is required.
|
* @param key The index key.
|
* @param entryID The entry ID.
|
* @return true if the entry ID is indexed by the given key,
|
* false if it is not indexed by the given key,
|
* undefined if the key has exceeded the entry limit.
|
* @throws DatabaseException If an error occurs in the JE database.
|
*/
|
public ConditionResult containsID(Transaction txn, DatabaseEntry key,
|
EntryID entryID)
|
throws DatabaseException
|
{
|
if(rebuildRunning)
|
{
|
return ConditionResult.UNDEFINED;
|
}
|
|
OperationStatus status;
|
LockMode lockMode = LockMode.DEFAULT;
|
DatabaseEntry data = new DatabaseEntry();
|
|
status = read(txn, key, data, lockMode);
|
if (status == OperationStatus.SUCCESS)
|
{
|
EntryIDSet entryIDList =
|
new EntryIDSet(key.getData(), data.getData());
|
if (!entryIDList.isDefined())
|
{
|
return ConditionResult.UNDEFINED;
|
}
|
return ConditionResult.valueOf(entryIDList.contains(entryID));
|
}
|
else
|
{
|
if(trusted)
|
{
|
return ConditionResult.FALSE;
|
}
|
else
|
{
|
return ConditionResult.UNDEFINED;
|
}
|
}
|
}
|
|
/**
|
* Reads the set of entry IDs for a given key.
|
*
|
* @param key The database key.
|
* @param txn A database transaction, or null if none is required.
|
* @param lockMode The JE locking mode to be used for the database read.
|
* @return The entry IDs indexed by this key.
|
*/
|
public EntryIDSet readKey(DatabaseEntry key, Transaction txn,
|
LockMode lockMode)
|
{
|
if(rebuildRunning)
|
{
|
return new EntryIDSet();
|
}
|
|
try
|
{
|
OperationStatus status;
|
DatabaseEntry data = new DatabaseEntry();
|
status = read( txn, key, data, lockMode);
|
if (status != OperationStatus.SUCCESS)
|
{
|
if(trusted)
|
{
|
return new EntryIDSet(key.getData(), null);
|
}
|
else
|
{
|
return new EntryIDSet();
|
}
|
}
|
return new EntryIDSet(key.getData(), data.getData());
|
}
|
catch (DatabaseException e)
|
{
|
logger.traceException(e);
|
return new EntryIDSet();
|
}
|
}
|
|
/**
|
* Writes the set of entry IDs for a given key.
|
*
|
* @param key The database key.
|
* @param entryIDList The entry IDs indexed by this key.
|
* @param txn A database transaction, or null if none is required.
|
* @throws DatabaseException If an error occurs in the JE database.
|
*/
|
public void writeKey(Transaction txn, DatabaseEntry key,
|
EntryIDSet entryIDList)
|
throws DatabaseException
|
{
|
DatabaseEntry data = new DatabaseEntry();
|
byte[] after = entryIDList.toDatabase();
|
if (after == null)
|
{
|
// No more IDs, so remove the key.
|
delete(txn, key);
|
}
|
else
|
{
|
if (!entryIDList.isDefined())
|
{
|
entryLimitExceededCount++;
|
}
|
data.setData(after);
|
put(txn, key, data);
|
}
|
}
|
|
|
/**
|
* Reads a range of keys and collects all their entry IDs into a
|
* single set.
|
*
|
* @param lower The lower bound of the range. A 0 length byte array indicates
|
* no lower bound and the range will start from the
|
* smallest key.
|
* @param upper The upper bound of the range. A 0 length byte array indicates
|
* no upper bound and the range will end at the largest
|
* key.
|
* @param lowerIncluded true if a key exactly matching the lower bound
|
* is included in the range, false if only keys
|
* strictly greater than the lower bound are included.
|
* This value is ignored if the lower bound is not
|
* specified.
|
* @param upperIncluded true if a key exactly matching the upper bound
|
* is included in the range, false if only keys
|
* strictly less than the upper bound are included.
|
* This value is ignored if the upper bound is not
|
* specified.
|
* @return The set of entry IDs.
|
*/
|
public EntryIDSet readRange(byte[] lower, byte[] upper,
|
boolean lowerIncluded, boolean upperIncluded)
|
{
|
LockMode lockMode = LockMode.DEFAULT;
|
|
// If this index is not trusted, then just return an undefined
|
// id set.
|
if(rebuildRunning || !trusted)
|
{
|
return new EntryIDSet();
|
}
|
|
try
|
{
|
// Total number of IDs found so far.
|
int totalIDCount = 0;
|
|
DatabaseEntry data = new DatabaseEntry();
|
DatabaseEntry key;
|
|
ArrayList<EntryIDSet> lists = new ArrayList<EntryIDSet>();
|
|
OperationStatus status;
|
Cursor cursor;
|
|
cursor = openCursor(null, CursorConfig.READ_COMMITTED);
|
|
try
|
{
|
// Set the lower bound if necessary.
|
if(lower.length > 0)
|
{
|
key = new DatabaseEntry(lower);
|
|
// Initialize the cursor to the lower bound.
|
status = cursor.getSearchKeyRange(key, data, lockMode);
|
|
// Advance past the lower bound if necessary.
|
if (status == OperationStatus.SUCCESS && !lowerIncluded &&
|
comparator.compare(key.getData(), lower) == 0)
|
{
|
// Do not include the lower value.
|
status = cursor.getNext(key, data, lockMode);
|
}
|
}
|
else
|
{
|
key = new DatabaseEntry();
|
status = cursor.getNext(key, data, lockMode);
|
}
|
|
if (status != OperationStatus.SUCCESS)
|
{
|
// There are no values.
|
return new EntryIDSet(key.getData(), null);
|
}
|
|
// Step through the keys until we hit the upper bound or the last key.
|
while (status == OperationStatus.SUCCESS)
|
{
|
// Check against the upper bound if necessary
|
if(upper.length > 0)
|
{
|
int cmp = comparator.compare(key.getData(), upper);
|
if ((cmp > 0) || (cmp == 0 && !upperIncluded))
|
{
|
break;
|
}
|
}
|
EntryIDSet list = new EntryIDSet(key.getData(), data.getData());
|
if (!list.isDefined())
|
{
|
// There is no point continuing.
|
return list;
|
}
|
totalIDCount += list.size();
|
if (cursorEntryLimit > 0 && totalIDCount > cursorEntryLimit)
|
{
|
// There are too many. Give up and return an undefined list.
|
return new EntryIDSet();
|
}
|
lists.add(list);
|
status = cursor.getNext(key, data, LockMode.DEFAULT);
|
}
|
|
return EntryIDSet.unionOfSets(lists, false);
|
}
|
finally
|
{
|
cursor.close();
|
}
|
}
|
catch (DatabaseException e)
|
{
|
logger.traceException(e);
|
return new EntryIDSet();
|
}
|
}
|
|
/**
|
* Get the number of keys that have exceeded the entry limit since this
|
* object was created.
|
* @return The number of keys that have exceeded the entry limit since this
|
* object was created.
|
*/
|
public int getEntryLimitExceededCount()
|
{
|
return entryLimitExceededCount;
|
}
|
|
/**
|
* Close any cursors open against this index.
|
*
|
* @throws DatabaseException If a database error occurs.
|
*/
|
public void closeCursor() throws DatabaseException {
|
Cursor cursor = curLocal.get();
|
if(cursor != null) {
|
cursor.close();
|
curLocal.remove();
|
}
|
}
|
|
|
/**
|
* Update the index buffer for a deleted entry.
|
*
|
* @param buffer The index buffer to use to store the deleted keys
|
* @param entryID The entry ID.
|
* @param entry The entry to be indexed.
|
* @return True if all the indexType keys for the entry are added. False if
|
* the entry ID already exists for some keys.
|
* @throws DatabaseException If an error occurs in the JE database.
|
* @throws DirectoryException If a Directory Server error occurs.
|
*/
|
public boolean addEntry(IndexBuffer buffer, EntryID entryID, Entry entry)
|
throws DatabaseException, DirectoryException
|
{
|
HashSet<byte[]> addKeys = new HashSet<byte[]>();
|
boolean success = true;
|
|
indexer.indexEntry(entry, addKeys);
|
|
for (byte[] keyBytes : addKeys)
|
{
|
if(!insertID(buffer, keyBytes, entryID))
|
{
|
success = false;
|
}
|
}
|
|
return success;
|
}
|
|
/**
|
* Update the index for a new entry.
|
*
|
* @param txn A database transaction, or null if none is required.
|
* @param entryID The entry ID.
|
* @param entry The entry to be indexed.
|
* @return True if all the indexType keys for the entry are added. False if
|
* the entry ID already exists for some keys.
|
* @throws DatabaseException If an error occurs in the JE database.
|
* @throws DirectoryException If a Directory Server error occurs.
|
*/
|
public boolean addEntry(Transaction txn, EntryID entryID, Entry entry)
|
throws DatabaseException, DirectoryException
|
{
|
TreeSet<byte[]> addKeys = new TreeSet<byte[]>(indexer.getComparator());
|
boolean success = true;
|
|
indexer.indexEntry(entry, addKeys);
|
|
DatabaseEntry key = new DatabaseEntry();
|
for (byte[] keyBytes : addKeys)
|
{
|
key.setData(keyBytes);
|
if(!insertID(txn, key, entryID))
|
{
|
success = false;
|
}
|
}
|
|
return success;
|
}
|
|
/**
|
* Update the index buffer for a deleted entry.
|
*
|
* @param buffer The index buffer to use to store the deleted keys
|
* @param entryID The entry ID
|
* @param entry The contents of the deleted entry.
|
* @throws DatabaseException If an error occurs in the JE database.
|
* @throws DirectoryException If a Directory Server error occurs.
|
*/
|
public void removeEntry(IndexBuffer buffer, EntryID entryID, Entry entry)
|
throws DatabaseException, DirectoryException
|
{
|
HashSet<byte[]> delKeys = new HashSet<byte[]>();
|
|
indexer.indexEntry(entry, delKeys);
|
|
for (byte[] keyBytes : delKeys)
|
{
|
removeID(buffer, keyBytes, entryID);
|
}
|
}
|
|
/**
|
* Update the index for a deleted entry.
|
*
|
* @param txn A database transaction, or null if none is required.
|
* @param entryID The entry ID
|
* @param entry The contents of the deleted entry.
|
* @throws DatabaseException If an error occurs in the JE database.
|
* @throws DirectoryException If a Directory Server error occurs.
|
*/
|
public void removeEntry(Transaction txn, EntryID entryID, Entry entry)
|
throws DatabaseException, DirectoryException
|
{
|
TreeSet<byte[]> delKeys = new TreeSet<byte[]>(indexer.getComparator());
|
|
indexer.indexEntry(entry, delKeys);
|
|
DatabaseEntry key = new DatabaseEntry();
|
for (byte[] keyBytes : delKeys)
|
{
|
key.setData(keyBytes);
|
removeID(txn, key, entryID);
|
}
|
}
|
|
|
/**
|
* Update the index to reflect a sequence of modifications in a Modify
|
* operation.
|
*
|
* @param txn A database transaction, or null if none is required.
|
* @param entryID The ID of the entry that was modified.
|
* @param oldEntry The entry before the modifications were applied.
|
* @param newEntry The entry after the modifications were applied.
|
* @param mods The sequence of modifications in the Modify operation.
|
* @throws DatabaseException If an error occurs in the JE database.
|
*/
|
public void modifyEntry(Transaction txn,
|
EntryID entryID,
|
Entry oldEntry,
|
Entry newEntry,
|
List<Modification> mods)
|
throws DatabaseException
|
{
|
TreeMap<byte[], Boolean> modifiedKeys =
|
new TreeMap<byte[], Boolean>(indexer.getComparator());
|
|
indexer.modifyEntry(oldEntry, newEntry, mods, modifiedKeys);
|
|
DatabaseEntry key = new DatabaseEntry();
|
for (Map.Entry<byte[], Boolean> modifiedKey : modifiedKeys.entrySet())
|
{
|
key.setData(modifiedKey.getKey());
|
if(modifiedKey.getValue())
|
{
|
insertID(txn, key, entryID);
|
}
|
else
|
{
|
removeID(txn, key, entryID);
|
}
|
}
|
}
|
|
/**
|
* Update the index to reflect a sequence of modifications in a Modify
|
* operation.
|
*
|
* @param buffer The index buffer to use to store the deleted keys
|
* @param entryID The ID of the entry that was modified.
|
* @param oldEntry The entry before the modifications were applied.
|
* @param newEntry The entry after the modifications were applied.
|
* @param mods The sequence of modifications in the Modify operation.
|
* @throws DatabaseException If an error occurs in the JE database.
|
*/
|
public void modifyEntry(IndexBuffer buffer,
|
EntryID entryID,
|
Entry oldEntry,
|
Entry newEntry,
|
List<Modification> mods)
|
throws DatabaseException
|
{
|
TreeMap<byte[], Boolean> modifiedKeys =
|
new TreeMap<byte[], Boolean>(indexer.getComparator());
|
|
indexer.modifyEntry(oldEntry, newEntry, mods, modifiedKeys);
|
for (Map.Entry<byte[], Boolean> modifiedKey : modifiedKeys.entrySet())
|
{
|
if(modifiedKey.getValue())
|
{
|
insertID(buffer, modifiedKey.getKey(), entryID);
|
}
|
else
|
{
|
removeID(buffer, modifiedKey.getKey(), entryID);
|
}
|
}
|
}
|
|
/**
|
* Set the index entry limit.
|
*
|
* @param indexEntryLimit The index entry limit to set.
|
* @return True if a rebuild is required or false otherwise.
|
*/
|
public boolean setIndexEntryLimit(int indexEntryLimit)
|
{
|
boolean rebuildRequired = false;
|
if(this.indexEntryLimit < indexEntryLimit &&
|
entryLimitExceededCount > 0 )
|
{
|
rebuildRequired = true;
|
}
|
this.indexEntryLimit = indexEntryLimit;
|
|
return rebuildRequired;
|
}
|
|
/**
|
* Set the indexer.
|
*
|
* @param indexer The indexer to set
|
*/
|
public void setIndexer(Indexer indexer)
|
{
|
this.indexer = indexer;
|
}
|
|
/**
|
* Return entry limit.
|
*
|
* @return The entry limit.
|
*/
|
public int getIndexEntryLimit() {
|
return this.indexEntryLimit;
|
}
|
|
/**
|
* Set the index trust state.
|
* @param txn A database transaction, or null if none is required.
|
* @param trusted True if this index should be trusted or false
|
* otherwise.
|
* @throws DatabaseException If an error occurs in the JE database.
|
*/
|
public synchronized void setTrusted(Transaction txn, boolean trusted)
|
throws DatabaseException
|
{
|
this.trusted = trusted;
|
state.putIndexTrustState(txn, this, trusted);
|
}
|
|
/**
|
* Return true iff this index is trusted.
|
* @return the trusted state of this index
|
*/
|
public synchronized boolean isTrusted()
|
{
|
return trusted;
|
}
|
|
/**
|
* Return <code>true</code> iff this index is being rebuilt.
|
* @return The rebuild state of this index
|
*/
|
public synchronized boolean isRebuildRunning()
|
{
|
return rebuildRunning;
|
}
|
|
/**
|
* Set the rebuild status of this index.
|
* @param rebuildRunning True if a rebuild process on this index
|
* is running or False otherwise.
|
*/
|
public synchronized void setRebuildStatus(boolean rebuildRunning)
|
{
|
this.rebuildRunning = rebuildRunning;
|
}
|
|
/**
|
* Whether this index maintains a count of IDs for keys once the
|
* entry limit has exceeded.
|
* @return <code>true</code> if this index maintains court of IDs
|
* or <code>false</code> otherwise
|
*/
|
public boolean getMaintainCount()
|
{
|
return maintainCount;
|
}
|
|
/**
|
* Return an indexes comparator.
|
*
|
* @return The comparator related to an index.
|
*/
|
public Comparator<byte[]> getComparator()
|
{
|
return this.comparator;
|
}
|
}
|
