Java Code Examples for com.google.common.util.concurrent.FutureCallback

private FutureCallback<Map<Integer, Double>> momentCpuUsageCallback(final String timestamp) {
    return new FutureCallback<Map<Integer, Double>>() {
        @Override
        public void onSuccess(Map<Integer, Double> momentCpuTime) {
            Map<String, Double> transformMomentCpuTime = ProcUtil.transformHexThreadId(momentCpuTime);
            int totalTime = 0;
            Map<String, String> dbMomentCpuTimes = new HashMap<>();
            for (Map.Entry<String, Double> entry : transformMomentCpuTime.entrySet()) {
                int time = (int) (entry.getValue() * 10000);
                dbMomentCpuTimes.put(KvUtils.getThreadMomentCpuTimeKey(timestamp, entry.getKey()), String.valueOf(time));
                totalTime += time;
            }
            kvDb.putBatch(dbMomentCpuTimes);
            kvDb.put(KvUtils.getThreadMomentCpuTimeKey(timestamp), String.valueOf(totalTime));
            kvDb.put(KvUtils.getCollectSuccessKey(timestamp), "true");
        }

        @Override
        public void onFailure(Throwable throwable) {
            logger.error("timestamp : {},fail get moment cpu usage", timestamp, throwable);
            kvDb.put(KvUtils.getCollectSuccessKey(timestamp), "true");
        }
    };
}
 

/**
 * 主方法
 */
public static void main(String[] args) throws Exception {
    //new JVMTest();
    //getJvmInfo();
    final CountDownLatch latch = new CountDownLatch(1);
    HostTask hostTask = new HostTask(UUID.randomUUID().toString(), 10995, new ConsoleResponseHandler(), 5000L);
    ContinueResponseJob job = hostTask.createJob();
    ListenableFuture<Integer> future = hostTask.getResultFuture();
    Futures.addCallback(future, new FutureCallback<Integer>() {
        @Override
        public void onSuccess(Integer result) {
            System.out.println(result);
            latch.countDown();
        }

        @Override
        public void onFailure(Throwable t) {
            t.printStackTrace();
            latch.countDown();
        }
    });
    latch.await();

}
 

/**
 * Register a callback to cache the result of a check.
 * @param target
 * @param lf
 */
private void addResultCachingCallback(
    Checkable<K, V> target, ListenableFuture<V> lf) {
  Futures.addCallback(lf, new FutureCallback<V>() {
    @Override
    public void onSuccess(@Nullable V result) {
      synchronized (ThrottledAsyncChecker.this) {
        checksInProgress.remove(target);
        completedChecks.put(target, new LastCheckResult<>(
            result, timer.monotonicNow()));
      }
    }

    @Override
    public void onFailure(@Nonnull Throwable t) {
      synchronized (ThrottledAsyncChecker.this) {
        checksInProgress.remove(target);
        completedChecks.put(target, new LastCheckResult<>(
            t, timer.monotonicNow()));
      }
    }
  }, MoreExecutors.directExecutor());
}
 

/**
 * Adapt a {@link ListenableFuture} to java standard {@link
 * CompletableFuture}, which is used by Jet.
 */
private static <T> CompletableFuture<T> toCompletableFuture(ListenableFuture<T> lf) {
    CompletableFuture<T> f = new CompletableFuture<>();
    // note that we don't handle CompletableFuture.cancel()
    Futures.addCallback(lf, new FutureCallback<T>() {
        @Override
        public void onSuccess(@NullableDecl T result) {
            f.complete(result);
        }

        @Override
        public void onFailure(Throwable t) {
            f.completeExceptionally(t);
        }
    }, directExecutor());
    return f;
}
 

/**
 * Opens a Session to Cassandra and initializes the prepared statement.
 *
 * @param taskNumber The number of the parallel instance.
 */
@Override
public void open(int taskNumber, int numTasks) {
	this.session = cluster.connect();
	MappingManager mappingManager = new MappingManager(session);
	this.mapper = mappingManager.mapper(outputClass);
	if (mapperOptions != null) {
		Mapper.Option[] optionsArray = mapperOptions.getMapperOptions();
		if (optionsArray != null) {
			mapper.setDefaultSaveOptions(optionsArray);
		}
	}
	this.callback = new FutureCallback<Void>() {
		@Override
		public void onSuccess(Void ignored) {
			onWriteSuccess();
		}

		@Override
		public void onFailure(Throwable t) {
			onWriteFailure(t);
		}
	};
}
 

/**
 * Opens a Session to Cassandra and initializes the prepared statement.
 *
 * @param taskNumber The number of the parallel instance.
 * @throws IOException Thrown, if the output could not be opened due to an
 *                     I/O problem.
 */
@Override
public void open(int taskNumber, int numTasks) throws IOException {
	this.session = cluster.connect();
	this.prepared = session.prepare(insertQuery);
	this.callback = new FutureCallback<ResultSet>() {
		@Override
		public void onSuccess(ResultSet ignored) {
			onWriteSuccess(ignored);
		}

		@Override
		public void onFailure(Throwable t) {
			onWriteFailure(t);
		}
	};
}
 

@Override
public void open(Configuration configuration) {
	this.callback = new FutureCallback<V>() {
		@Override
		public void onSuccess(V ignored) {
			semaphore.release();
		}

		@Override
		public void onFailure(Throwable t) {
			throwable.compareAndSet(null, t);
			log.error("Error while sending value.", t);
			semaphore.release();
		}
	};
	this.cluster = builder.getCluster();
	this.session = createSession();

	throwable = new AtomicReference<>();
	semaphore = new Semaphore(config.getMaxConcurrentRequests());
}
 

/**
 * <p>Returns a future that wraps a list of all transactions that the given transaction depends on, recursively.
 * Only transactions in peers memory pools are included; the recursion stops at transactions that are in the
 * current best chain. So it doesn't make much sense to provide a tx that was already in the best chain and
 * a precondition checks this.</p>
 *
 * <p>For example, if tx has 2 inputs that connect to transactions A and B, and transaction B is unconfirmed and
 * has one input connecting to transaction C that is unconfirmed, and transaction C connects to transaction D
 * that is in the chain, then this method will return either {B, C} or {C, B}. No ordering is guaranteed.</p>
 *
 * <p>This method is useful for apps that want to learn about how long an unconfirmed transaction might take
 * to confirm, by checking for unexpectedly time locked transactions, unusually deep dependency trees or fee-paying
 * transactions that depend on unconfirmed free transactions.</p>
 *
 * <p>Note that dependencies downloaded this way will not trigger the onTransaction method of event listeners.</p>
 */
public ListenableFuture<List<Transaction>> downloadDependencies(Transaction tx) {
    TransactionConfidence.ConfidenceType txConfidence = tx.getConfidence().getConfidenceType();
    Preconditions.checkArgument(txConfidence != TransactionConfidence.ConfidenceType.BUILDING);
    log.info("{}: Downloading dependencies of {}", getAddress(), tx.getHashAsString());
    final LinkedList<Transaction> results = new LinkedList<>();
    // future will be invoked when the entire dependency tree has been walked and the results compiled.
    final ListenableFuture<Object> future = downloadDependenciesInternal(vDownloadTxDependencyDepth, 0, tx,
            new Object(), results);
    final SettableFuture<List<Transaction>> resultFuture = SettableFuture.create();
    Futures.addCallback(future, new FutureCallback<Object>() {
        @Override
        public void onSuccess(Object ignored) {
            resultFuture.set(results);
        }

        @Override
        public void onFailure(Throwable throwable) {
            resultFuture.setException(throwable);
        }
    });
    return resultFuture;
}
 

protected void watchCloseConfirmations() {
    // When we see the close transaction get enough confirmations, we can just delete the record
    // of this channel along with the refund tx from the wallet, because we're not going to need
    // any of that any more.
    final TransactionConfidence confidence = storedChannel.close.getConfidence();
    int numConfirms = Context.get().getEventHorizon();
    ListenableFuture<TransactionConfidence> future = confidence.getDepthFuture(numConfirms, Threading.SAME_THREAD);
    Futures.addCallback(future, new FutureCallback<TransactionConfidence>() {
        @Override
        public void onSuccess(TransactionConfidence result) {
            deleteChannelFromWallet();
        }

        @Override
        public void onFailure(Throwable t) {
            Throwables.propagate(t);
        }
    });
}
 

/**
 * <p>Returns a future that wraps a list of all transactions that the given transaction depends on, recursively.
 * Only transactions in peers memory pools are included; the recursion stops at transactions that are in the
 * current best chain. So it doesn't make much sense to provide a tx that was already in the best chain and
 * a precondition checks this.</p>
 * <p>
 * <p>For example, if tx has 2 inputs that connect to transactions A and B, and transaction B is unconfirmed and
 * has one input connecting to transaction C that is unconfirmed, and transaction C connects to transaction D
 * that is in the chain, then this method will return either {B, C} or {C, B}. No ordering is guaranteed.</p>
 * <p>
 * <p>This method is useful for apps that want to learn about how long an unconfirmed transaction might take
 * to confirm, by checking for unexpectedly time locked transactions, unusually deep dependency trees or fee-paying
 * transactions that depend on unconfirmed free transactions.</p>
 * <p>
 * <p>Note that dependencies downloaded this way will not trigger the onTransaction method of event listeners.</p>
 */
public ListenableFuture<List<Transaction>> downloadDependencies(Transaction tx) {
    TransactionConfidence.ConfidenceType txConfidence = tx.getConfidence().getConfidenceType();
    Preconditions.checkArgument(txConfidence != TransactionConfidence.ConfidenceType.BUILDING);
    log.info("{}: Downloading dependencies of {}", getAddress(), tx.getHashAsString());
    final LinkedList<Transaction> results = new LinkedList<>();
    // future will be invoked when the entire dependency tree has been walked and the results compiled.
    final ListenableFuture<Object> future = downloadDependenciesInternal(vDownloadTxDependencyDepth, 0, tx,
            new Object(), results);
    final SettableFuture<List<Transaction>> resultFuture = SettableFuture.create();
    Futures.addCallback(future, new FutureCallback<Object>() {
        @Override
        public void onSuccess(Object ignored) {
            resultFuture.set(results);
        }

        @Override
        public void onFailure(Throwable throwable) {
            resultFuture.setException(throwable);
        }
    });
    return resultFuture;
}
 

public static void deleteRunItem(final Context context, final RunItem runItem) {
    final ProgressDialog dialog = new ProgressDialog(context);
    dialog.setTitle("Deleting run from server");
    dialog.setMessage("Working...");
    dialog.show();
    dialog.setCancelable(false);
    dialog.setCanceledOnTouchOutside(false);
    mLocalRunItems.remove(runItem);

    Futures.addCallback(getRunTable().delete(runItem), new FutureCallback<Void>() {
        @Override
        public void onSuccess(Void v) {
            dialog.dismiss();
        }

        @Override
        public void onFailure(Throwable t) {
            Log.e(TAG, "Deleting key error");
        }
    });
}
 

/**
 * Opens a Session to Cassandra and initializes the prepared statement.
 *
 * @param taskNumber The number of the parallel instance.
 */
@Override
public void open(int taskNumber, int numTasks) {
	this.session = cluster.connect();
	MappingManager mappingManager = new MappingManager(session);
	this.mapper = mappingManager.mapper(outputClass);
	if (mapperOptions != null) {
		Mapper.Option[] optionsArray = mapperOptions.getMapperOptions();
		if (optionsArray != null) {
			mapper.setDefaultSaveOptions(optionsArray);
		}
	}
	this.callback = new FutureCallback<Void>() {
		@Override
		public void onSuccess(Void ignored) {
			onWriteSuccess();
		}

		@Override
		public void onFailure(Throwable t) {
			onWriteFailure(t);
		}
	};
}
 

/**
 * Opens a Session to Cassandra and initializes the prepared statement.
 *
 * @param taskNumber The number of the parallel instance.
 * @throws IOException Thrown, if the output could not be opened due to an
 *                     I/O problem.
 */
@Override
public void open(int taskNumber, int numTasks) throws IOException {
	this.session = cluster.connect();
	this.prepared = session.prepare(insertQuery);
	this.callback = new FutureCallback<ResultSet>() {
		@Override
		public void onSuccess(ResultSet ignored) {
			onWriteSuccess(ignored);
		}

		@Override
		public void onFailure(Throwable t) {
			onWriteFailure(t);
		}
	};
}
 

@Override
public void open(Configuration configuration) {
	this.callback = new FutureCallback<V>() {
		@Override
		public void onSuccess(V ignored) {
			semaphore.release();
		}

		@Override
		public void onFailure(Throwable t) {
			throwable.compareAndSet(null, t);
			log.error("Error while sending value.", t);
			semaphore.release();
		}
	};
	this.cluster = builder.getCluster();
	this.session = createSession();

	throwable = new AtomicReference<>();
	semaphore = new Semaphore(config.getMaxConcurrentRequests());
}
 

protected void fetchServiceList(FluxSink<String> sink, GrpcRequestContainer request) {
	ManagedChannel channel = createChannel(request);
    var client = ServerReflectionClient.create(channel);

    
    Futures.addCallback(client.listServices(), new FutureCallback<>() {

		@Override
		public void onSuccess(ImmutableList<String> result) {
			result.forEach(sink::next);
			channel.shutdown();
			sink.complete();
		}

		@Override
		public void onFailure(Throwable t) {
			t.printStackTrace();
			channel.shutdown();
			sink.error(t);
		}
	}, executor);
}
 

@Nonnull
@Override
public ListenableFuture<TotalCaptureResultProxy> removeMetadataFuture(final long timestamp)
{
    ListenableFuture<TotalCaptureResultProxy> future = getOrCreateFuture(timestamp);
    // Remove the future from the map when it is done to free the memory.
    Futures.addCallback(future, new FutureCallback<TotalCaptureResultProxy>()
    {
        @Override
        public void onSuccess(TotalCaptureResultProxy totalCaptureResultProxy)
        {
            synchronized (mLock)
            {
                mMetadataFutures.remove(timestamp);
            }
        }

        @Override
        public void onFailure(Throwable throwable)
        {
            throw new UnsupportedOperationException();
        }
    });
    return Futures2.nonCancellationPropagating(future);
}
 

private void sendClientDisconnect(final Channel channel, final String clientId, final boolean persistent, final Long sessionExpiryInterval) {


        final boolean preventWill = channel.attr(ChannelAttributes.PREVENT_LWT).get() != null ? channel.attr(ChannelAttributes.PREVENT_LWT).get() : false;
        final boolean sendWill = !preventWill && (channel.attr(ChannelAttributes.SEND_WILL).get() != null ? channel.attr(ChannelAttributes.SEND_WILL).get() : true);
        final ListenableFuture<Void> persistenceFuture = clientSessionPersistence.clientDisconnected(clientId, sendWill, sessionExpiryInterval);
        FutureUtils.addPersistenceCallback(persistenceFuture, new FutureCallback<Void>() {
                    @Override
                    public void onSuccess(@Nullable final Void result) {
                        if (!channel.attr(ChannelAttributes.TAKEN_OVER).get()) {
                            channelPersistence.remove(clientId);
                        }

                        final SettableFuture<Void> disconnectFuture = channel.attr(ChannelAttributes.DISCONNECT_FUTURE).get();
                        if (disconnectFuture != null) {
                            disconnectFuture.set(null);
                        }
                    }

                    @Override
                    public void onFailure(@NotNull final Throwable throwable) {
                        Exceptions.rethrowError("Unable to update client session data for disconnecting client " + clientId + " with clean session set to " + !persistent + ".", throwable);
                    }
                }
        );
    }
 

private void sendSubackAndRetainedMessages(final ChannelHandlerContext ctx, @NotNull final SUBSCRIBE msg, @NotNull final Mqtt5SubAckReasonCode[] answerCodes,
                                           @NotNull final SettableFuture<List<SubscriptionResult>> addResultsFuture, @NotNull final Set<Topic> ignoredTopics,
                                           final @Nullable String reasonString) {

    Futures.addCallback(addResultsFuture, new FutureCallback<>() {
        @Override
        public void onSuccess(@Nullable final List<SubscriptionResult> subscriptionResults) {

            final ChannelFuture future = ctx.writeAndFlush(new SUBACK(msg.getPacketIdentifier(), ImmutableList.copyOf(answerCodes), reasonString));
            // actually the ignoredTopics are unnecessary in this case, as the batching logic already applies the filtering
            if (subscriptionResults != null) {
                future.addListener(new SendRetainedMessagesListener(subscriptionResults, ignoredTopics, retainedMessagePersistence, retainedMessagesSender));
            }
        }

        @Override
        public void onFailure(@NotNull final Throwable throwable) {
            //Already logged
            ctx.channel().disconnect();
        }
    }, ctx.executor());
}
 

@NotNull
private SettableFuture<PublishStatus> queuePublish(@NotNull final String client, @NotNull final PUBLISH publish,
                                                   final int subscriptionQos, final boolean shared, final boolean retainAsPublished,
                                                   @Nullable final ImmutableIntArray subscriptionIdentifier) {

    final ListenableFuture<Void> future = clientQueuePersistence.add(client, shared, createPublish(publish, subscriptionQos, retainAsPublished, subscriptionIdentifier));
    final SettableFuture<PublishStatus> statusFuture = SettableFuture.create();

    Futures.addCallback(future, new FutureCallback<Void>() {
        @Override
        public void onSuccess(final Void result) {
            statusFuture.set(DELIVERED);
        }

        @Override
        public void onFailure(final Throwable t) {
            statusFuture.set(FAILED);
        }
    }, singleWriterService.callbackExecutor(client));
    return statusFuture;
}
 

public ListenableFuture<HealthCheckResponse> handle() {
   ShsMetrics.incHealthCheck();
   SettableFuture<HealthCheckResponse> future = SettableFuture.create();
   try {
      Futures.addCallback(ping(), new FutureCallback<HealthCheckResponse>() {
         @Override
         public void onSuccess(HealthCheckResponse result) {
            future.set(result);
         }

         @Override
         public void onFailure(@NonNull Throwable t) {
            logger.error("alexa health check failed: ", t);
            future.set(badHealth());
         }
      }, MoreExecutors.directExecutor());
   } catch(Exception e) {
      logger.error("alexa health check failed: ", e);
      future.set(badHealth());
   }
   return future;
}
 

private <T> ListenableFuture<Set<T>> getSecondClients(final List<String> serverUrls, final ConfigMeta meta, final String uri, final Function<String, Set<T>> parseFunction) {
    final SettableFuture<Set<T>> secondClientsFuture = SettableFuture.create();
    long delay = Numbers.toLong(config.get("queryListeningClients.delayMillis"), 1000);
    executor.schedule(() -> {
        ListenableFuture<Set<T>> secondFuture = doGetListeningClients(serverUrls, meta, uri, parseFunction);
        Futures.addCallback(secondFuture, new FutureCallback<Set<T>>() {
            @Override
            public void onSuccess(Set<T> result) {
                secondClientsFuture.set(result);
            }

            @Override
            public void onFailure(Throwable t) {
                secondClientsFuture.setException(t);
            }
        }, Constants.CURRENT_EXECUTOR);
    }, delay, TimeUnit.MILLISECONDS);
    return secondClientsFuture;
}
 

private void setupConfidenceListener() {
    if (getDepositTx() != null) {
        TransactionConfidence transactionConfidence = getDepositTx().getConfidence();
        if (transactionConfidence.getConfidenceType() == TransactionConfidence.ConfidenceType.BUILDING) {
            setConfirmedState();
        } else {
            ListenableFuture<TransactionConfidence> future = transactionConfidence.getDepthFuture(1);
            Futures.addCallback(future, new FutureCallback<TransactionConfidence>() {
                @Override
                public void onSuccess(TransactionConfidence result) {
                    setConfirmedState();
                }

                @Override
                public void onFailure(@NotNull Throwable t) {
                    t.printStackTrace();
                    log.error(t.getMessage());
                    throw new RuntimeException(t);
                }
            });
        }
    } else {
        log.error("depositTx == null. That must not happen.");
    }
}
 

public void emptyWallet(String toAddress, KeyParameter aesKey, ResultHandler resultHandler, ErrorMessageHandler errorMessageHandler)
        throws InsufficientMoneyException, AddressFormatException {
    SendRequest sendRequest = SendRequest.emptyWallet(Address.fromBase58(params, toAddress));
    sendRequest.fee = Coin.ZERO;
    sendRequest.feePerKb = getTxFeeForWithdrawalPerByte().multiply(1000);
    sendRequest.aesKey = aesKey;
    Wallet.SendResult sendResult = wallet.sendCoins(sendRequest);
    printTx("empty wallet", sendResult.tx);
    Futures.addCallback(sendResult.broadcastComplete, new FutureCallback<Transaction>() {
        @Override
        public void onSuccess(Transaction result) {
            log.info("emptyWallet onSuccess Transaction=" + result);
            resultHandler.handleResult();
        }

        @Override
        public void onFailure(@NotNull Throwable t) {
            log.error("emptyWallet onFailure " + t.toString());
            errorMessageHandler.handleErrorMessage(t.getMessage());
        }
    });
}
 

public String sendFundsForMultipleAddresses(Set<String> fromAddresses,
                                            String toAddress,
                                            Coin receiverAmount,
                                            Coin fee,
                                            @Nullable String changeAddress,
                                            @Nullable KeyParameter aesKey,
                                            FutureCallback<Transaction> callback) throws AddressFormatException,
        AddressEntryException, InsufficientMoneyException {

    SendRequest request = getSendRequestForMultipleAddresses(fromAddresses, toAddress, receiverAmount, fee, changeAddress, aesKey);
    Wallet.SendResult sendResult = wallet.sendCoins(request);
    Futures.addCallback(sendResult.broadcastComplete, callback);

    printTx("sendFunds", sendResult.tx);
    return sendResult.tx.getHashAsString();
}
 

public SettableFuture<Tuple2<Map<String, Long>, Map<String, Long>>> getFees(FeeProvider provider) {
    final SettableFuture<Tuple2<Map<String, Long>, Map<String, Long>>> resultFuture = SettableFuture.create();
    ListenableFuture<Tuple2<Map<String, Long>, Map<String, Long>>> future = executorService.submit(() -> {
        Thread.currentThread().setName("FeeRequest-" + provider.toString());
        return provider.getFees();
    });

    Futures.addCallback(future, new FutureCallback<Tuple2<Map<String, Long>, Map<String, Long>>>() {
        public void onSuccess(Tuple2<Map<String, Long>, Map<String, Long>> feeData) {
            log.debug("Received feeData of {}\nfrom provider {}", feeData, provider);
            resultFuture.set(feeData);
        }

        public void onFailure(@NotNull Throwable throwable) {
            resultFuture.setException(throwable);
        }
    });

    return resultFuture;
}
 

private void requestAllPrices(PriceProvider provider, Runnable resultHandler, FaultHandler faultHandler) {
    Log.traceCall();
    PriceRequest priceRequest = new PriceRequest();
    SettableFuture<Tuple2<Map<String, Long>, Map<String, MarketPrice>>> future = priceRequest.requestAllPrices(provider);
    Futures.addCallback(future, new FutureCallback<Tuple2<Map<String, Long>, Map<String, MarketPrice>>>() {
        @Override
        public void onSuccess(@Nullable Tuple2<Map<String, Long>, Map<String, MarketPrice>> result) {
            UserThread.execute(() -> {
                checkNotNull(result, "Result must not be null at requestAllPrices");
                timeStampMap = result.first;
                epochInSecondAtLastRequest = timeStampMap.get("btcAverageTs");
                final Map<String, MarketPrice> priceMap = result.second;

                cache.putAll(priceMap);

                resultHandler.run();
            });
        }

        @Override
        public void onFailure(@NotNull Throwable throwable) {
            UserThread.execute(() -> faultHandler.handleFault("Could not load marketPrices", throwable));
        }
    });
}
 

public SettableFuture<Tuple2<Map<String, Long>, Map<String, MarketPrice>>> requestAllPrices(PriceProvider provider) {
    final String baseUrl = provider.getBaseUrl();
    final SettableFuture<Tuple2<Map<String, Long>, Map<String, MarketPrice>>> resultFuture = SettableFuture.create();
    ListenableFuture<Tuple2<Map<String, Long>, Map<String, MarketPrice>>> future = executorService.submit(() -> {
        Thread.currentThread().setName("PriceRequest-" + provider.toString());
        return provider.getAll();
    });

    Futures.addCallback(future, new FutureCallback<Tuple2<Map<String, Long>, Map<String, MarketPrice>>>() {
        public void onSuccess(Tuple2<Map<String, Long>, Map<String, MarketPrice>> marketPriceTuple) {
            log.debug("Received marketPriceTuple of {}\nfrom provider {}", marketPriceTuple, provider);
            resultFuture.set(marketPriceTuple);
        }

        public void onFailure(@NotNull Throwable throwable) {
            resultFuture.setException(new PriceRequestException(throwable, baseUrl));
        }
    });

    return resultFuture;
}
 

protected void watchCloseConfirmations() {
    // When we see the close transaction get enough confirmations, we can just delete the record
    // of this channel along with the refund tx from the wallet, because we're not going to need
    // any of that any more.
    final TransactionConfidence confidence = storedChannel.close.getConfidence();
    int numConfirms = Context.get().getEventHorizon();
    ListenableFuture<TransactionConfidence> future = confidence.getDepthFuture(numConfirms, Threading.SAME_THREAD);
    Futures.addCallback(future, new FutureCallback<TransactionConfidence>() {
        @Override
        public void onSuccess(TransactionConfidence result) {
            deleteChannelFromWallet();
        }

        @Override
        public void onFailure(Throwable t) {
            Throwables.propagate(t);
        }
    });
}
 

public static void sendAsyncMessage(final JobMsg job) {

        ListeningExecutorService guavaExecutor = MoreExecutors.listeningDecorator(EXECUTORS);

        final ListenableFuture<Boolean> listenableFuture = guavaExecutor.submit(new Callable<Boolean>() {

            @Override
            public Boolean call() throws Exception {
                return MessageProducer.send(job);
            }
        });
        Futures.addCallback(listenableFuture, new FutureCallback<Boolean>() {
            @Override
            public void onSuccess(Boolean mqMessageStatus) {
            }

            @Override
            public void onFailure(Throwable throwable) {
                LOGGER.error(throwable.getMessage());
            }
        });
    }
 

@Override
public CompletableFuture<Datagram> processRequest(ChannelHandlerContext ctx, RemotingCommand request) {
    final List<RawMessageExtend> messages = deserializeRawMessagesExtend(request);
    final ListenableFuture<Datagram> result = receiver.receive(messages, request);
    final CompletableFuture<Datagram> future = new CompletableFuture<>();
    Futures.addCallback(result, new FutureCallback<Datagram>() {
        @Override
        public void onSuccess(Datagram datagram) {
            future.complete(datagram);
        }

        @Override
        public void onFailure(Throwable ex) {
            future.completeExceptionally(ex);
        }
    }, MoreExecutors.directExecutor());
    return future;
}