Java Code Examples for org.apache.flink.queryablestate.FutureUtils#getFailedFuture()

/**
 * Returns a future holding the serialized request result.
 *
 * <p>If the channel has been established, forward the call to the
 * established channel, otherwise queue it for when the channel is
 * handed in.
 *
 * @param request the request to be sent.
 * @return Future holding the serialized result
 */
CompletableFuture<RESP> sendRequest(REQ request) {
	synchronized (connectLock) {
		if (failureCause != null) {
			return FutureUtils.getFailedFuture(failureCause);
		} else if (connectionShutdownFuture.get() != null) {
			return FutureUtils.getFailedFuture(new ClosedChannelException());
		} else {
			if (established != null) {
				return established.sendRequest(request);
			} else {
				// Queue this and handle when connected
				final PendingRequest pending = new PendingRequest(request);
				queuedRequests.add(pending);
				return pending;
			}
		}
	}
}
 

/**
 * Returns a future holding the serialized request result.
 *
 * <p>If the channel has been established, forward the call to the
 * established channel, otherwise queue it for when the channel is
 * handed in.
 *
 * @param request the request to be sent.
 * @return Future holding the serialized result
 */
CompletableFuture<RESP> sendRequest(REQ request) {
	synchronized (connectLock) {
		if (failureCause != null) {
			return FutureUtils.getFailedFuture(failureCause);
		} else if (connectionShutdownFuture.get() != null) {
			return FutureUtils.getFailedFuture(new ClosedChannelException());
		} else {
			if (established != null) {
				return established.sendRequest(request);
			} else {
				// Queue this and handle when connected
				final PendingRequest pending = new PendingRequest(request);
				queuedRequests.add(pending);
				return pending;
			}
		}
	}
}
 

/**
 * Returns a future holding the serialized request result.
 *
 * <p>If the channel has been established, forward the call to the
 * established channel, otherwise queue it for when the channel is
 * handed in.
 *
 * @param request the request to be sent.
 * @return Future holding the serialized result
 */
CompletableFuture<RESP> sendRequest(REQ request) {
	synchronized (connectLock) {
		if (failureCause != null) {
			return FutureUtils.getFailedFuture(failureCause);
		} else if (connectionShutdownFuture.get() != null) {
			return FutureUtils.getFailedFuture(new ClosedChannelException());
		} else {
			if (established != null) {
				return established.sendRequest(request);
			} else {
				// Queue this and handle when connected
				final PendingRequest pending = new PendingRequest(request);
				queuedRequests.add(pending);
				return pending;
			}
		}
	}
}
 

public CompletableFuture<RESP> sendRequest(final InetSocketAddress serverAddress, final REQ request) {
	if (clientShutdownFuture.get() != null) {
		return FutureUtils.getFailedFuture(new IllegalStateException(clientName + " is already shut down."));
	}

	EstablishedConnection connection = establishedConnections.get(serverAddress);
	if (connection != null) {
		return connection.sendRequest(request);
	} else {
		PendingConnection pendingConnection = pendingConnections.get(serverAddress);
		if (pendingConnection != null) {
			// There was a race, use the existing pending connection.
			return pendingConnection.sendRequest(request);
		} else {
			// We try to connect to the server.
			PendingConnection pending = new PendingConnection(serverAddress, messageSerializer);
			PendingConnection previous = pendingConnections.putIfAbsent(serverAddress, pending);

			if (previous == null) {
				// OK, we are responsible to connect.
				bootstrap.connect(serverAddress.getAddress(), serverAddress.getPort()).addListener(pending);
				return pending.sendRequest(request);
			} else {
				// There was a race, use the existing pending connection.
				return previous.sendRequest(request);
			}
		}
	}
}
 

/**
 * Returns a future holding the request result.
 * @param jobId                     JobID of the job the queryable state belongs to.
 * @param queryableStateName        Name under which the state is queryable.
 * @param key			            The key that the state we request is associated with.
 * @param namespace					The namespace of the state.
 * @param keyTypeInfo				The {@link TypeInformation} of the keys.
 * @param namespaceTypeInfo			The {@link TypeInformation} of the namespace.
 * @param stateDescriptor			The {@link StateDescriptor} of the state we want to query.
 * @return Future holding the immutable {@link State} object containing the result.
 */
private <K, N, S extends State, V> CompletableFuture<S> getKvState(
		final JobID jobId,
		final String queryableStateName,
		final K key,
		final N namespace,
		final TypeInformation<K> keyTypeInfo,
		final TypeInformation<N> namespaceTypeInfo,
		final StateDescriptor<S, V> stateDescriptor) {

	Preconditions.checkNotNull(jobId);
	Preconditions.checkNotNull(queryableStateName);
	Preconditions.checkNotNull(key);
	Preconditions.checkNotNull(namespace);

	Preconditions.checkNotNull(keyTypeInfo);
	Preconditions.checkNotNull(namespaceTypeInfo);
	Preconditions.checkNotNull(stateDescriptor);

	TypeSerializer<K> keySerializer = keyTypeInfo.createSerializer(executionConfig);
	TypeSerializer<N> namespaceSerializer = namespaceTypeInfo.createSerializer(executionConfig);

	stateDescriptor.initializeSerializerUnlessSet(executionConfig);

	final byte[] serializedKeyAndNamespace;
	try {
		serializedKeyAndNamespace = KvStateSerializer
				.serializeKeyAndNamespace(key, keySerializer, namespace, namespaceSerializer);
	} catch (IOException e) {
		return FutureUtils.getFailedFuture(e);
	}

	return getKvState(jobId, queryableStateName, key.hashCode(), serializedKeyAndNamespace)
		.thenApply(stateResponse -> createState(stateResponse, stateDescriptor));
}
 

/**
 * Returns a future holding the serialized request result.
 *
 * @param jobId                     JobID of the job the queryable state
 *                                  belongs to
 * @param queryableStateName        Name under which the state is queryable
 * @param keyHashCode               Integer hash code of the key (result of
 *                                  a call to {@link Object#hashCode()}
 * @param serializedKeyAndNamespace Serialized key and namespace to query
 *                                  KvState instance with
 * @return Future holding the serialized result
 */
private CompletableFuture<KvStateResponse> getKvState(
		final JobID jobId,
		final String queryableStateName,
		final int keyHashCode,
		final byte[] serializedKeyAndNamespace) {
	LOG.debug("Sending State Request to {}.", remoteAddress);
	try {
		KvStateRequest request = new KvStateRequest(jobId, queryableStateName, keyHashCode, serializedKeyAndNamespace);
		return client.sendRequest(remoteAddress, request);
	} catch (Exception e) {
		LOG.error("Unable to send KVStateRequest: ", e);
		return FutureUtils.getFailedFuture(e);
	}
}
 

public CompletableFuture<RESP> sendRequest(final InetSocketAddress serverAddress, final REQ request) {
	if (clientShutdownFuture.get() != null) {
		return FutureUtils.getFailedFuture(new IllegalStateException(clientName + " is already shut down."));
	}

	EstablishedConnection connection = establishedConnections.get(serverAddress);
	if (connection != null) {
		return connection.sendRequest(request);
	} else {
		PendingConnection pendingConnection = pendingConnections.get(serverAddress);
		if (pendingConnection != null) {
			// There was a race, use the existing pending connection.
			return pendingConnection.sendRequest(request);
		} else {
			// We try to connect to the server.
			PendingConnection pending = new PendingConnection(serverAddress, messageSerializer);
			PendingConnection previous = pendingConnections.putIfAbsent(serverAddress, pending);

			if (previous == null) {
				// OK, we are responsible to connect.
				bootstrap.connect(serverAddress.getAddress(), serverAddress.getPort()).addListener(pending);
				return pending.sendRequest(request);
			} else {
				// There was a race, use the existing pending connection.
				return previous.sendRequest(request);
			}
		}
	}
}
 

/**
 * Returns a future holding the request result.
 * @param jobId                     JobID of the job the queryable state belongs to.
 * @param queryableStateName        Name under which the state is queryable.
 * @param key			            The key that the state we request is associated with.
 * @param namespace					The namespace of the state.
 * @param keyTypeInfo				The {@link TypeInformation} of the keys.
 * @param namespaceTypeInfo			The {@link TypeInformation} of the namespace.
 * @param stateDescriptor			The {@link StateDescriptor} of the state we want to query.
 * @return Future holding the immutable {@link State} object containing the result.
 */
private <K, N, S extends State, V> CompletableFuture<S> getKvState(
		final JobID jobId,
		final String queryableStateName,
		final K key,
		final N namespace,
		final TypeInformation<K> keyTypeInfo,
		final TypeInformation<N> namespaceTypeInfo,
		final StateDescriptor<S, V> stateDescriptor) {

	Preconditions.checkNotNull(jobId);
	Preconditions.checkNotNull(queryableStateName);
	Preconditions.checkNotNull(key);
	Preconditions.checkNotNull(namespace);

	Preconditions.checkNotNull(keyTypeInfo);
	Preconditions.checkNotNull(namespaceTypeInfo);
	Preconditions.checkNotNull(stateDescriptor);

	TypeSerializer<K> keySerializer = keyTypeInfo.createSerializer(executionConfig);
	TypeSerializer<N> namespaceSerializer = namespaceTypeInfo.createSerializer(executionConfig);

	stateDescriptor.initializeSerializerUnlessSet(executionConfig);

	final byte[] serializedKeyAndNamespace;
	try {
		serializedKeyAndNamespace = KvStateSerializer
				.serializeKeyAndNamespace(key, keySerializer, namespace, namespaceSerializer);
	} catch (IOException e) {
		return FutureUtils.getFailedFuture(e);
	}

	return getKvState(jobId, queryableStateName, key.hashCode(), serializedKeyAndNamespace)
		.thenApply(stateResponse -> createState(stateResponse, stateDescriptor));
}
 

/**
 * Returns a future holding the serialized request result.
 *
 * @param jobId                     JobID of the job the queryable state
 *                                  belongs to
 * @param queryableStateName        Name under which the state is queryable
 * @param keyHashCode               Integer hash code of the key (result of
 *                                  a call to {@link Object#hashCode()}
 * @param serializedKeyAndNamespace Serialized key and namespace to query
 *                                  KvState instance with
 * @return Future holding the serialized result
 */
private CompletableFuture<KvStateResponse> getKvState(
		final JobID jobId,
		final String queryableStateName,
		final int keyHashCode,
		final byte[] serializedKeyAndNamespace) {
	LOG.debug("Sending State Request to {}.", remoteAddress);
	try {
		KvStateRequest request = new KvStateRequest(jobId, queryableStateName, keyHashCode, serializedKeyAndNamespace);
		return client.sendRequest(remoteAddress, request);
	} catch (Exception e) {
		LOG.error("Unable to send KVStateRequest: ", e);
		return FutureUtils.getFailedFuture(e);
	}
}
 

@Override
public CompletableFuture<Void> closeAsync() {
	try {
		distribution.stopFlinkCluster();
		return CompletableFuture.completedFuture(null);
	} catch (IOException e) {
		return FutureUtils.getFailedFuture(e);
	}
}
 

public CompletableFuture<RESP> sendRequest(final InetSocketAddress serverAddress, final REQ request) {
	if (clientShutdownFuture.get() != null) {
		return FutureUtils.getFailedFuture(new IllegalStateException(clientName + " is already shut down."));
	}

	EstablishedConnection connection = establishedConnections.get(serverAddress);
	if (connection != null) {
		return connection.sendRequest(request);
	} else {
		PendingConnection pendingConnection = pendingConnections.get(serverAddress);
		if (pendingConnection != null) {
			// There was a race, use the existing pending connection.
			return pendingConnection.sendRequest(request);
		} else {
			// We try to connect to the server.
			PendingConnection pending = new PendingConnection(serverAddress, messageSerializer);
			PendingConnection previous = pendingConnections.putIfAbsent(serverAddress, pending);

			if (previous == null) {
				// OK, we are responsible to connect.
				bootstrap.connect(serverAddress.getAddress(), serverAddress.getPort()).addListener(pending);
				return pending.sendRequest(request);
			} else {
				// There was a race, use the existing pending connection.
				return previous.sendRequest(request);
			}
		}
	}
}
 

/**
 * Returns a future holding the request result.
 * @param jobId                     JobID of the job the queryable state belongs to.
 * @param queryableStateName        Name under which the state is queryable.
 * @param key			            The key that the state we request is associated with.
 * @param namespace					The namespace of the state.
 * @param keyTypeInfo				The {@link TypeInformation} of the keys.
 * @param namespaceTypeInfo			The {@link TypeInformation} of the namespace.
 * @param stateDescriptor			The {@link StateDescriptor} of the state we want to query.
 * @return Future holding the immutable {@link State} object containing the result.
 */
private <K, N, S extends State, V> CompletableFuture<S> getKvState(
		final JobID jobId,
		final String queryableStateName,
		final K key,
		final N namespace,
		final TypeInformation<K> keyTypeInfo,
		final TypeInformation<N> namespaceTypeInfo,
		final StateDescriptor<S, V> stateDescriptor) {

	Preconditions.checkNotNull(jobId);
	Preconditions.checkNotNull(queryableStateName);
	Preconditions.checkNotNull(key);
	Preconditions.checkNotNull(namespace);

	Preconditions.checkNotNull(keyTypeInfo);
	Preconditions.checkNotNull(namespaceTypeInfo);
	Preconditions.checkNotNull(stateDescriptor);

	TypeSerializer<K> keySerializer = keyTypeInfo.createSerializer(executionConfig);
	TypeSerializer<N> namespaceSerializer = namespaceTypeInfo.createSerializer(executionConfig);

	stateDescriptor.initializeSerializerUnlessSet(executionConfig);

	final byte[] serializedKeyAndNamespace;
	try {
		serializedKeyAndNamespace = KvStateSerializer
				.serializeKeyAndNamespace(key, keySerializer, namespace, namespaceSerializer);
	} catch (IOException e) {
		return FutureUtils.getFailedFuture(e);
	}

	return getKvState(jobId, queryableStateName, key.hashCode(), serializedKeyAndNamespace)
		.thenApply(stateResponse -> createState(stateResponse, stateDescriptor));
}
 

/**
 * Returns a future holding the serialized request result.
 *
 * @param jobId                     JobID of the job the queryable state
 *                                  belongs to
 * @param queryableStateName        Name under which the state is queryable
 * @param keyHashCode               Integer hash code of the key (result of
 *                                  a call to {@link Object#hashCode()}
 * @param serializedKeyAndNamespace Serialized key and namespace to query
 *                                  KvState instance with
 * @return Future holding the serialized result
 */
private CompletableFuture<KvStateResponse> getKvState(
		final JobID jobId,
		final String queryableStateName,
		final int keyHashCode,
		final byte[] serializedKeyAndNamespace) {
	LOG.debug("Sending State Request to {}.", remoteAddress);
	try {
		KvStateRequest request = new KvStateRequest(jobId, queryableStateName, keyHashCode, serializedKeyAndNamespace);
		return client.sendRequest(remoteAddress, request);
	} catch (Exception e) {
		LOG.error("Unable to send KVStateRequest: ", e);
		return FutureUtils.getFailedFuture(e);
	}
}