import com.google.common.base.Preconditions;
import com.google.common.util.concurrent.Futures;
import com.google.common.util.concurrent.ListenableFuture;
-import com.google.common.util.concurrent.ListeningExecutorService;
-import java.util.concurrent.Callable;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicLong;
public class InMemoryDOMDataStore extends TransactionReadyPrototype implements DOMStore, Identifiable<String>, SchemaContextListener, AutoCloseable {
private static final Logger LOG = LoggerFactory.getLogger(InMemoryDOMDataStore.class);
private static final ListenableFuture<Void> SUCCESSFUL_FUTURE = Futures.immediateFuture(null);
+ private static final ListenableFuture<Boolean> CAN_COMMIT_FUTURE = Futures.immediateFuture(Boolean.TRUE);
private static final Invoker<DataChangeListenerRegistration<?>, DOMImmutableDataChangeEvent> DCL_NOTIFICATION_MGR_INVOKER =
new Invoker<DataChangeListenerRegistration<?>, DOMImmutableDataChangeEvent>() {
private final QueuedNotificationManager<DataChangeListenerRegistration<?>, DOMImmutableDataChangeEvent> dataChangeListenerNotificationManager;
private final ExecutorService dataChangeListenerExecutor;
- private final ListeningExecutorService commitExecutor;
private final boolean debugTransactions;
private final String name;
private volatile AutoCloseable closeable;
- public InMemoryDOMDataStore(final String name, final ListeningExecutorService commitExecutor,
- final ExecutorService dataChangeListenerExecutor) {
- this(name, commitExecutor, dataChangeListenerExecutor,
- InMemoryDOMDataStoreConfigProperties.DEFAULT_MAX_DATA_CHANGE_LISTENER_QUEUE_SIZE, false);
+ public InMemoryDOMDataStore(final String name, final ExecutorService dataChangeListenerExecutor) {
+ this(name, dataChangeListenerExecutor, InMemoryDOMDataStoreConfigProperties.DEFAULT_MAX_DATA_CHANGE_LISTENER_QUEUE_SIZE, false);
}
- public InMemoryDOMDataStore(final String name, final ListeningExecutorService commitExecutor,
- final ExecutorService dataChangeListenerExecutor, final int maxDataChangeListenerQueueSize,
- final boolean debugTransactions) {
+ public InMemoryDOMDataStore(final String name, final ExecutorService dataChangeListenerExecutor,
+ final int maxDataChangeListenerQueueSize, final boolean debugTransactions) {
this.name = Preconditions.checkNotNull(name);
- this.commitExecutor = Preconditions.checkNotNull(commitExecutor);
this.dataChangeListenerExecutor = Preconditions.checkNotNull(dataChangeListenerExecutor);
this.debugTransactions = debugTransactions;
return dataChangeListenerNotificationManager;
}
- public ExecutorService getDomStoreExecutor() {
- return commitExecutor;
- }
-
@Override
public final String getIdentifier() {
return name;
@Override
public void close() {
- ExecutorServiceUtil.tryGracefulShutdown(commitExecutor, 30, TimeUnit.SECONDS);
ExecutorServiceUtil.tryGracefulShutdown(dataChangeListenerExecutor, 30, TimeUnit.SECONDS);
if(closeable != null) {
@Override
public ListenableFuture<Boolean> canCommit() {
- return commitExecutor.submit(new Callable<Boolean>() {
- @Override
- public Boolean call() throws TransactionCommitFailedException {
- try {
- dataTree.validate(modification);
- LOG.debug("Store Transaction: {} can be committed", transaction.getIdentifier());
- return true;
- } catch (ConflictingModificationAppliedException e) {
- LOG.warn("Store Tx: {} Conflicting modification for {}.", transaction.getIdentifier(),
- e.getPath());
- transaction.warnDebugContext(LOG);
- throw new OptimisticLockFailedException("Optimistic lock failed.",e);
- } catch (DataValidationFailedException e) {
- LOG.warn("Store Tx: {} Data Precondition failed for {}.", transaction.getIdentifier(),
- e.getPath(), e);
- transaction.warnDebugContext(LOG);
- throw new TransactionCommitFailedException("Data did not pass validation.",e);
- }
- }
- });
+ try {
+ dataTree.validate(modification);
+ LOG.debug("Store Transaction: {} can be committed", transaction.getIdentifier());
+ return CAN_COMMIT_FUTURE;
+ } catch (ConflictingModificationAppliedException e) {
+ LOG.warn("Store Tx: {} Conflicting modification for {}.", transaction.getIdentifier(),
+ e.getPath());
+ transaction.warnDebugContext(LOG);
+ return Futures.immediateFailedFuture(new OptimisticLockFailedException("Optimistic lock failed.", e));
+ } catch (DataValidationFailedException e) {
+ LOG.warn("Store Tx: {} Data Precondition failed for {}.", transaction.getIdentifier(),
+ e.getPath(), e);
+ transaction.warnDebugContext(LOG);
+
+ // For debugging purposes, allow dumping of the modification. Coupled with the above
+ // precondition log, it should allow us to understand what went on.
+ LOG.trace("Store Tx: {} modifications: {}", modification);
+
+ return Futures.immediateFailedFuture(new TransactionCommitFailedException("Data did not pass validation.", e));
+ } catch (Exception e) {
+ LOG.warn("Unexpected failure in validation phase", e);
+ return Futures.immediateFailedFuture(e);
+ }
}
@Override
public ListenableFuture<Void> preCommit() {
- return commitExecutor.submit(new Callable<Void>() {
- @Override
- public Void call() {
- candidate = dataTree.prepare(modification);
- listenerResolver = ResolveDataChangeEventsTask.create(candidate, listenerTree);
- return null;
- }
- });
+ try {
+ candidate = dataTree.prepare(modification);
+ listenerResolver = ResolveDataChangeEventsTask.create(candidate, listenerTree);
+ return SUCCESSFUL_FUTURE;
+ } catch (Exception e) {
+ LOG.warn("Unexpected failure in pre-commit phase", e);
+ return Futures.immediateFailedFuture(e);
+ }
}
@Override