use of com.sleepycat.je.OperationStatus in project voldemort by voldemort.
the class BdbStorageEngine method delete.
@Override
public boolean delete(ByteArray key, Version version) throws PersistenceFailureException {
StoreUtils.assertValidKey(key);
long startTimeNs = -1;
if (logger.isTraceEnabled())
startTimeNs = System.nanoTime();
Transaction transaction = null;
try {
transaction = this.environment.beginTransaction(null, null);
DatabaseEntry keyEntry = new DatabaseEntry(key.get());
if (version == null) {
// unversioned delete. Just blow away the whole thing
OperationStatus status = getBdbDatabase().delete(transaction, keyEntry);
if (OperationStatus.SUCCESS == status)
return true;
else
return false;
} else {
// versioned deletes; need to determine what to delete
DatabaseEntry valueEntry = new DatabaseEntry();
// do a get for the existing values
OperationStatus status = getBdbDatabase().get(transaction, keyEntry, valueEntry, LockMode.RMW);
// key does not exist to begin with.
if (OperationStatus.NOTFOUND == status)
return false;
List<Versioned<byte[]>> vals = StoreBinaryFormat.fromByteArray(valueEntry.getData());
Iterator<Versioned<byte[]>> iter = vals.iterator();
int numVersions = vals.size();
int numDeletedVersions = 0;
// supplied version
while (iter.hasNext()) {
Versioned<byte[]> curr = iter.next();
Version currentVersion = curr.getVersion();
if (currentVersion.compare(version) == Occurred.BEFORE) {
iter.remove();
numDeletedVersions++;
}
}
if (numDeletedVersions < numVersions) {
// we still have some valid versions
valueEntry.setData(StoreBinaryFormat.toByteArray(vals));
getBdbDatabase().put(transaction, keyEntry, valueEntry);
} else {
// we have deleted all the versions; so get rid of the entry
// in the database
getBdbDatabase().delete(transaction, keyEntry);
}
return numDeletedVersions > 0;
}
} catch (DatabaseException e) {
this.bdbEnvironmentStats.reportException(e);
logger.error(e);
throw new PersistenceFailureException(e);
} finally {
attemptCommit(transaction);
if (logger.isTraceEnabled()) {
logger.trace("Completed DELETE (" + getName() + ") of key " + ByteUtils.toHexString(key.get()) + " (keyRef: " + System.identityHashCode(key) + ") in " + (System.nanoTime() - startTimeNs) + " ns at " + System.currentTimeMillis());
}
}
}
use of com.sleepycat.je.OperationStatus in project voldemort by voldemort.
the class BdbStorageEngine method put.
@Override
public void put(ByteArray key, Versioned<byte[]> value, byte[] transforms) throws PersistenceFailureException {
long startTimeNs = -1;
if (logger.isTraceEnabled())
startTimeNs = System.nanoTime();
StoreUtils.assertValidKey(key);
DatabaseEntry keyEntry = new DatabaseEntry(key.get());
DatabaseEntry valueEntry = new DatabaseEntry();
boolean succeeded = false;
Transaction transaction = null;
List<Versioned<byte[]>> vals = null;
try {
transaction = environment.beginTransaction(null, null);
// do a get for the existing values
OperationStatus status = getBdbDatabase().get(transaction, keyEntry, valueEntry, LockMode.RMW);
if (OperationStatus.SUCCESS == status) {
// update
vals = StoreBinaryFormat.fromByteArray(valueEntry.getData());
// compare vector clocks and throw out old ones, for updates
Iterator<Versioned<byte[]>> iter = vals.iterator();
while (iter.hasNext()) {
Versioned<byte[]> curr = iter.next();
Occurred occurred = value.getVersion().compare(curr.getVersion());
if (occurred == Occurred.BEFORE)
throw new ObsoleteVersionException("Key " + new String(hexCodec.encode(key.get())) + " " + value.getVersion().toString() + " is obsolete, it is no greater than the current version of " + curr.getVersion().toString() + ".");
else if (occurred == Occurred.AFTER)
iter.remove();
}
} else {
// insert
vals = new ArrayList<Versioned<byte[]>>(1);
}
// update the new value
vals.add(value);
valueEntry.setData(StoreBinaryFormat.toByteArray(vals));
status = getBdbDatabase().put(transaction, keyEntry, valueEntry);
if (status != OperationStatus.SUCCESS)
throw new PersistenceFailureException("Put operation failed with status: " + status);
succeeded = true;
} catch (DatabaseException e) {
this.bdbEnvironmentStats.reportException(e);
logger.error("Error in put for store " + this.getName(), e);
throw new PersistenceFailureException(e);
} finally {
if (succeeded)
attemptCommit(transaction);
else
attemptAbort(transaction);
if (logger.isTraceEnabled()) {
logger.trace("Completed PUT (" + getName() + ") to key " + key + " (keyRef: " + System.identityHashCode(key) + " value " + value + " in " + (System.nanoTime() - startTimeNs) + " ns at " + System.currentTimeMillis());
}
}
}
use of com.sleepycat.je.OperationStatus in project voldemort by voldemort.
the class BdbStorageEngine method get.
@Override
public List<Versioned<byte[]>> get(ByteArray key, byte[] transforms) throws PersistenceFailureException {
StoreUtils.assertValidKey(key);
DatabaseEntry keyEntry = new DatabaseEntry(key.get());
DatabaseEntry valueEntry = new DatabaseEntry();
long startTimeNs = -1;
if (logger.isTraceEnabled())
startTimeNs = System.nanoTime();
try {
// uncommitted reads are perfectly fine now, since we have no
// je-delete() in put()
OperationStatus status = getBdbDatabase().get(null, keyEntry, valueEntry, readLockMode);
if (OperationStatus.SUCCESS == status) {
return StoreBinaryFormat.fromByteArray(valueEntry.getData());
} else {
return Collections.emptyList();
}
} catch (DatabaseException e) {
this.bdbEnvironmentStats.reportException(e);
logger.error(e);
throw new PersistenceFailureException(e);
} finally {
if (logger.isTraceEnabled()) {
logger.trace("Completed GET (" + getName() + ") from key " + key + " (keyRef: " + System.identityHashCode(key) + ") in " + (System.nanoTime() - startTimeNs) + " ns at " + System.currentTimeMillis());
}
}
}
use of com.sleepycat.je.OperationStatus in project voldemort by voldemort.
the class BdbStorageEngine method putAndUnlock.
@Override
public void putAndUnlock(ByteArray key, KeyLockHandle<byte[]> handle) {
long startTimeNs = -1;
if (logger.isTraceEnabled())
startTimeNs = System.nanoTime();
StoreUtils.assertValidKey(key);
DatabaseEntry keyEntry = new DatabaseEntry(key.get());
DatabaseEntry valueEntry = new DatabaseEntry();
boolean succeeded = false;
Transaction transaction = null;
try {
transaction = (Transaction) handle.getKeyLock();
valueEntry.setData(StoreBinaryFormat.toByteArray(handle.getValues()));
OperationStatus status = getBdbDatabase().put(transaction, keyEntry, valueEntry);
if (status != OperationStatus.SUCCESS)
throw new PersistenceFailureException("putAndUnlock operation failed with status: " + status);
succeeded = true;
} catch (DatabaseException e) {
this.bdbEnvironmentStats.reportException(e);
logger.error("Error in putAndUnlock for store " + this.getName(), e);
throw new PersistenceFailureException(e);
} finally {
if (succeeded)
attemptCommit(transaction);
else
attemptAbort(transaction);
if (logger.isTraceEnabled()) {
logger.trace("Completed PUTANDUNLOCK (" + getName() + ") to key " + key + " (keyRef: " + System.identityHashCode(key) + " in " + (System.nanoTime() - startTimeNs) + " ns at " + System.currentTimeMillis());
}
handle.close();
}
}
use of com.sleepycat.je.OperationStatus in project voldemort by voldemort.
the class BdbConvertNewDupToPidScan method transfer.
@Override
public void transfer() throws Exception {
cursor = srcDB.openCursor(null, null);
DatabaseEntry keyEntry = new DatabaseEntry();
DatabaseEntry valueEntry = new DatabaseEntry();
HashFunction hash = new FnvHashFunction();
int totalPartitions = cluster.getNumberOfPartitions();
List<Versioned<byte[]>> vals;
long startTime = System.currentTimeMillis();
int scanCount = 0;
int keyCount = 0;
while (cursor.getNext(keyEntry, valueEntry, LockMode.READ_UNCOMMITTED) == OperationStatus.SUCCESS) {
keyCount++;
vals = StoreBinaryFormat.fromByteArray(valueEntry.getData());
scanCount += vals.size();
int partition = BdbConvertData.abs(hash.hash(keyEntry.getData())) % (Math.max(1, totalPartitions));
OperationStatus putStatus = dstDB.put(null, new DatabaseEntry(StoreBinaryFormat.makePrefixedKey(keyEntry.getData(), partition)), valueEntry);
if (OperationStatus.SUCCESS != putStatus) {
String errorStr = "Put failed with " + putStatus + " for key" + BdbConvertData.writeAsciiString(keyEntry.getData());
logger.error(errorStr);
throw new Exception(errorStr);
}
if (scanCount % 1000000 == 0)
logger.info("Reverted " + scanCount + " entries in " + (System.currentTimeMillis() - startTime) / 1000 + " secs");
}
logger.info("Converted " + scanCount + " entries and " + keyCount + " keys in " + (System.currentTimeMillis() - startTime) / 1000 + " secs");
}
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