Java Futures.exceptionalFuture方法代碼示例

import io.atomix.utils.concurrent.Futures; //導入方法依賴的package包/類
@Override
public CompletableFuture<Boolean> isEmpty() {
  try {
    return backingMap.isEmpty();
  } catch (Exception e) {
    return Futures.exceptionalFuture(e);
  }
}
 

import io.atomix.utils.concurrent.Futures; //導入方法依賴的package包/類
CompletableFuture<ReconfigureResponse> reconfigure(ReconfigureRequest request) {
  if (reconfigureHandler != null) {
    return reconfigureHandler.apply(request);
  } else {
    return Futures.exceptionalFuture(new ConnectException());
  }
}
 

import io.atomix.utils.concurrent.Futures; //導入方法依賴的package包/類
@Override
public CompletableFuture<Versioned<V1>> putAndGet(K1 key, V1 value, Duration ttl) {
  try {
    return backingMap.putAndGet(keyEncoder.apply(key), valueEncoder.apply(value), ttl)
        .thenApply(versionedValueTransform);
  } catch (Exception e) {
    return Futures.exceptionalFuture(e);
  }
}
 

import io.atomix.utils.concurrent.Futures; //導入方法依賴的package包/類
@Override
public CompletableFuture<Boolean> remove(K1 key, long version) {
  try {
    return backingMap.remove(keyEncoder.apply(key), version);
  } catch (Exception e) {
    return Futures.exceptionalFuture(e);
  }
}
 

import io.atomix.utils.concurrent.Futures; //導入方法依賴的package包/類
@Override
public <M, R> CompletableFuture<R> sendAndReceive(
        M message,
        MessageSubject subject,
        Function<M, byte[]> encoder,
        Function<byte[], R> decoder,
        NodeId toNodeId) {
    TestClusterCommunicationService node = nodes.get(toNodeId);
    if (node == null) {
        return Futures.exceptionalFuture(new MessagingException.NoRemoteHandler());
    }
    return node.handle(subject, encoder.apply(message)).thenApply(decoder);
}
 

import io.atomix.utils.concurrent.Futures; //導入方法依賴的package包/類
CompletableFuture<byte[]> leave(byte[] request) {
  if (leaveHandler != null) {
    return leaveHandler.apply(decode(request)).thenApply(this::encode);
  } else {
    return Futures.exceptionalFuture(new ConnectException());
  }
}
 

import io.atomix.utils.concurrent.Futures; //導入方法依賴的package包/類
CompletableFuture<KeepAliveResponse> keepAlive(KeepAliveRequest request) {
  if (keepAliveHandler != null) {
    return keepAliveHandler.apply(request);
  } else {
    return Futures.exceptionalFuture(new ConnectException());
  }
}
 

import io.atomix.utils.concurrent.Futures; //導入方法依賴的package包/類
@Override
public CompletableFuture<Boolean> put(K1 key, V1 value) {
  try {
    return backingMap.put(keyEncoder.apply(key),
        valueEncoder.apply(value));
  } catch (Exception e) {
    return Futures.exceptionalFuture(e);
  }
}
 

import io.atomix.utils.concurrent.Futures; //導入方法依賴的package包/類
private CompletableFuture<byte[]> handle(MessageSubject subject, byte[] message) {
    Function<byte[], CompletableFuture<byte[]>> subscriber = subscribers.get(subject);
    if (subscriber != null) {
        return subscriber.apply(message);
    }
    return Futures.exceptionalFuture(new MessagingException.NoRemoteHandler());
}
 

import io.atomix.utils.concurrent.Futures; //導入方法依賴的package包/類
@Override
public CompletableFuture<Void> rollback(TransactionId transactionId) {
  try {
    return backingMap.rollback(transactionId);
  } catch (Exception e) {
    return Futures.exceptionalFuture(e);
  }
}
 

import io.atomix.utils.concurrent.Futures; //導入方法依賴的package包/類
@Override
public CompletableFuture<Boolean> prepare(TransactionLog<MapUpdate<K1, V1>> transactionLog) {
  try {
    return backingMap.prepare(transactionLog.map(record -> record.map(keyEncoder, valueEncoder)));
  } catch (Exception e) {
    return Futures.exceptionalFuture(e);
  }
}
 

import io.atomix.utils.concurrent.Futures; //導入方法依賴的package包/類
@Override
public CompletableFuture<Boolean> replace(K1 key, long expectedOldValue, long newValue) {
  try {
    return backingMap.replace(keyEncoder.apply(key), expectedOldValue, newValue);
  } catch (Exception e) {
    return Futures.exceptionalFuture(e);
  }
}
 

import io.atomix.utils.concurrent.Futures; //導入方法依賴的package包/類
@Override
public synchronized CompletableFuture<Void> listen(Collection<NodeId> cluster) {
  if (joinFuture != null)
    return joinFuture;

  // If no configuration was loaded from disk, create a new configuration.
  if (configuration == null) {
    member.setType(RaftMember.Type.PASSIVE);

    // Create a set of cluster members, excluding the local member which is joining a cluster.
    Set<RaftMember> activeMembers = cluster.stream()
        .filter(m -> !m.equals(member.nodeId()))
        .map(m -> new DefaultRaftMember(m, RaftMember.Type.ACTIVE, member.getLastUpdated()))
        .collect(Collectors.toSet());

    // If the set of members in the cluster is empty when the local member is excluded,
    // fail the join.
    if (activeMembers.isEmpty()) {
      return Futures.exceptionalFuture(new IllegalStateException("cannot join empty cluster"));
    }

    // Create a new configuration and configure the cluster. Once the cluster is configured, the configuration
    // will be stored on disk to ensure the cluster can fall back to the provided configuration if necessary.
    configure(new Configuration(0, 0, member.getLastUpdated().toEpochMilli(), activeMembers));
  }
  return join();
}
 

import io.atomix.utils.concurrent.Futures; //導入方法依賴的package包/類
@Override
public CompletableFuture<Versioned<V1>> putIfAbsent(K1 key, V1 value, Duration ttl) {
  try {
    return backingMap.putIfAbsent(keyEncoder.apply(key), valueEncoder.apply(value), ttl)
        .thenApply(versionedValueTransform);
  } catch (Exception e) {
    return Futures.exceptionalFuture(e);
  }
}
 

import io.atomix.utils.concurrent.Futures; //導入方法依賴的package包/類
/**
 * Appends an entry to the Raft log and compacts logs if necessary.
 *
 * @param entry   the entry to append
 * @param attempt the append attempt count
 * @param <E>     the entry type
 * @return a completable future to be completed once the entry has been appended
 */
protected <E extends RaftLogEntry> CompletableFuture<Indexed<E>> appendAndCompact(E entry, int attempt) {
  if (attempt == MAX_APPEND_ATTEMPTS) {
    return Futures.exceptionalFuture(new StorageException.OutOfDiskSpace("Not enough space to append entry"));
  } else {
    try {
      return CompletableFuture.completedFuture(raft.getLogWriter().append(entry));
    } catch (StorageException.OutOfDiskSpace e) {
      return raft.getLogCompactor().compact().thenCompose(v -> appendAndCompact(entry, attempt + 1));
    }
  }
}