private void launch(String[] cmd) throws IOException {
String[] params = Arrays.copyOf(cmd, cmd.length + 1);
params[cmd.length] = tmpfile.toString();
ProcessBuilder pb = new ProcessBuilder(params);
pb = pb.inheritIO();
try {
input.suspend();
Process process = pb.start();
process.waitFor();
} catch (IOException ex) {
errorHandler.accept("process IO failure: " + ex.getMessage());
} catch (InterruptedException ex) {
errorHandler.accept("process interrupt: " + ex.getMessage());
} finally {
try {
watcher.close();
watchedThread.join(); // so that saveFile() is finished.
saveFile();
} catch (InterruptedException ex) {
errorHandler.accept("process interrupt: " + ex.getMessage());
} finally {
input.resume();
}
}
}
@Override
public void paginateSQL(
final StringBuilder query,
final int firstRow,
final int maxRows,
final Consumer<StringBuilder> queryBuilder) {
if ((firstRow >= 0) && (maxRows > 0)) {
queryBuilder.accept(query);
query.append(OFFSET);
query.append(firstRow);
query.append(ROWS_FETCH_FIRST);
query.append(maxRows);
query.append(ROWS_ONLY);
return;
}
if (firstRow >= 0) {
queryBuilder.accept(query);
query.append(OFFSET);
query.append(firstRow);
query.append(ROWS);
return;
}
if (maxRows > 0) {
queryBuilder.accept(query);
query.append(FETCH_FIRST);
query.append(maxRows);
query.append(ROWS_ONLY);
return;
}
queryBuilder.accept(query);
}
private void saveFile() {
try {
saveHandler.accept(Files.lines(tmpfile).collect(Collectors.joining("\n", "", "\n")));
} catch (IOException ex) {
errorHandler.accept("Failure in read edit file: " + ex.getMessage());
}
}
@Override
public void forEachRemaining(Consumer<? super R> action) {
while (left != null) {
accept(handleLeft(), action);
}
if (cur == none()) {
if (!source.tryAdvance(this)) {
accept(pushRight(none(), none()), action);
return;
}
}
acc = mapper.apply(cur);
source.forEachRemaining(
next -> {
if (!this.mergeable.test(cur, next)) {
action.accept(acc);
acc = mapper.apply(next);
} else {
acc = accumulator.apply(acc, next);
}
cur = next;
});
if (accept(pushRight(acc, cur), action)) {
if (right != null) {
action.accept(right.acc);
right = null;
}
}
}
/** Process objects with specific tag. */
public void byTag(
String tagName, Predicate<IOsmObject> predicate, Consumer<IOsmObject> consumer) {
short tagKey = tagsPack.getTagCode(tagName);
for (int i = 0; i < nodes.size(); i++) {
IOsmNode n = nodes.get(i);
if (n.hasTag(tagKey)) {
if (predicate.test(n)) {
consumer.accept(n);
}
}
}
for (int i = 0; i < ways.size(); i++) {
IOsmWay w = ways.get(i);
if (w.hasTag(tagKey)) {
if (predicate.test(w)) {
consumer.accept(w);
}
}
}
for (int i = 0; i < relations.size(); i++) {
IOsmRelation r = relations.get(i);
if (r.hasTag(tagKey)) {
if (predicate.test(r)) {
consumer.accept(r);
}
}
}
}
default BiFunctor<T1, T2> bipeek(Consumer<? super T1> c1, Consumer<? super T2> c2) {
return bimap(
input -> {
c1.accept(input);
return input;
},
input -> {
c2.accept(input);
return input;
});
}
public void addOr(T value, Consumer<T> ifFound) {
Node<T> toInsert = new Node<>(value);
// Assume we're inserting and making a comparison, fix later
size++;
comparisonCount++;
int headComparison = head != null ? head.getValue().compareTo(value) : -1;
if (head == null) {
// There's nothing in the list
comparisonCount--;
head = tail = toInsert;
referenceChangeCount += 2;
} else if (headComparison == 0) {
// The element we're interested in is the first thing in the list
size--;
if (ifFound != null) ifFound.accept(head.getValue());
} else if (headComparison > 0) {
// The element needs to become the first element in the sorted list
toInsert.linkTo(head);
head = toInsert;
referenceChangeCount += 2;
} else {
// The element is not the first element, or doesn't belong at the very start of the list
// Search for an element that matches the target, or insert it if we've passed where it
// should "logically" be in terms of sorting order
Node<T> ref = head;
while (ref.next() != null) {
comparisonCount++;
int comparison = ref.next().getValue().compareTo(value);
if (comparison > 0) {
// The element cannot possibly come after this element. Insert before it
toInsert.linkTo(ref.next());
ref.linkTo(toInsert);
referenceChangeCount += 2;
return;
} else if (comparison == 0) {
// We found the element. Perform the specified action if one was provided
size--;
if (ifFound != null) ifFound.accept(ref.next().getValue());
return;
}
ref = ref.next();
}
// The element hasn't been inserted yet, it belongs at the tail of the list
tail.linkTo(toInsert);
tail = toInsert;
referenceChangeCount += 2;
}
}
public static void runExample(
String exampleDir,
String verticleID,
VertxOptions options,
DeploymentOptions deploymentOptions) {
if (options == null) {
// Default parameter
options = new VertxOptions();
}
// Smart cwd detection
// Based on the current directory (.) and the desired directory (exampleDir), we try to compute
// the vertx.cwd
// directory:
try {
// We need to use the canonical file. Without the file name is .
File current = new File(".").getCanonicalFile();
if (exampleDir.startsWith(current.getName()) && !exampleDir.equals(current.getName())) {
exampleDir = exampleDir.substring(current.getName().length() + 1);
}
} catch (IOException e) {
// Ignore it.
}
System.setProperty("vertx.cwd", exampleDir);
Consumer<Vertx> runner =
vertx -> {
try {
if (deploymentOptions != null) {
vertx.deployVerticle(verticleID, deploymentOptions);
} else {
vertx.deployVerticle(verticleID);
}
} catch (Throwable t) {
t.printStackTrace();
}
};
if (options.isClustered()) {
Vertx.clusteredVertx(
options,
res -> {
if (res.succeeded()) {
Vertx vertx = res.result();
runner.accept(vertx);
} else {
res.cause().printStackTrace();
}
});
} else {
Vertx vertx = Vertx.vertx(options);
runner.accept(vertx);
}
}
public void transferMoneyBalanceCheck(
AccountHolder fromData, AccountHolder toData, double amount, Consumer<Boolean> result) {
new Thread(
() -> {
if (fromData.withdrawMoney(amount)) {
toData.creditMoney(amount);
if (result != null) result.accept(true);
} else if (result != null) result.accept(false);
})
.start();
}
@Override
public void processRow(Row columns) {
if (columns == null || columns.isEmpty()) {
this.LOG.accept("Nothing to do -> empty entry list");
return;
}
try {
final String insertSQL = generateInsertStatement(columns);
LOG.accept("#processRow(): " + insertSQL);
this.statement.execute(insertSQL);
LOG.accept("#processRow() executed!");
} catch (SQLException ex) {
throw new IllegalStateException("Cannot insert entry: " + ex.getMessage(), ex);
}
}
@Test
public void runTestWithAsyncCompletion() throws Exception {
BlockingQueue<Async> queue = new ArrayBlockingQueue<>(1);
AtomicInteger count = new AtomicInteger();
TestSuite suite =
TestSuite.create("my_suite")
.test(
"my_test",
context -> {
count.compareAndSet(0, 1);
queue.add(context.async());
});
TestReporter reporter = new TestReporter();
run(suite, reporter);
Async async = queue.poll(2, TimeUnit.SECONDS);
assertEquals(1, count.get());
assertFalse(reporter.completed());
completeAsync.accept(async);
reporter.await();
assertTrue(reporter.completed());
assertEquals(0, reporter.exceptions.size());
assertEquals(1, reporter.results.size());
TestResult result = reporter.results.get(0);
assertEquals("my_test", result.name());
assertTrue(result.succeeded());
assertFalse(result.failed());
assertNull(result.failure());
}
/**
* Takes action on the Unicode of each character in this {@code CharSeq}.
*
* <p>Similar to {@link #eachCodePoint()}, but instead of returning the Unicode collection, it
* iterates the collection and takes action.
*
* @param consumer the action to be taken on the Unicode of each character
* @throws NullPointerException if consumer is null
*/
public void forEachCodePoint(Consumer<Integer> consumer) {
Objects.requireNonNull(consumer);
char[] chars = str.toCharArray();
for (int i = 0; i < chars.length; i++) {
consumer.accept((int) chars[i]);
}
}
private static void execute(
Settings settings,
BiFunction<Runnable, TimeValue, ScheduledFuture<?>> scheduler,
Consumer<Throwable> consumer,
boolean constructionShouldFail,
Runnable asserts)
throws InterruptedException {
assert constructionShouldFail == (consumer != null);
assert constructionShouldFail == (asserts == null);
ThreadPool threadPool = null;
try {
threadPool =
new ThreadPool(JvmGcMonitorServiceSettingsTests.class.getCanonicalName()) {
@Override
public ScheduledFuture<?> scheduleWithFixedDelay(Runnable command, TimeValue interval) {
return scheduler.apply(command, interval);
}
};
try {
JvmGcMonitorService service = new JvmGcMonitorService(settings, threadPool);
if (constructionShouldFail) {
fail("construction of jvm gc service should have failed");
}
service.doStart();
asserts.run();
service.doStop();
} catch (Throwable t) {
consumer.accept(t);
}
} finally {
ThreadPool.terminate(threadPool, 30, TimeUnit.SECONDS);
}
}
private void dragConsume(DragEvent e, Consumer<DragEvent> c) {
List<File> files = e.getDragboard().getFiles();
if (files != null && !files.isEmpty()) {
c.accept(e);
}
e.consume();
}
@Override
public void visit(Consumer<? super Renderer> consumer) {
consumer.accept(this);
for (Renderer c : content) {
c.visit(consumer);
}
}
@Override
public Set<Integer> onIntermediateResult(
Address address, Collection<CacheEntry<K, Object>> results) {
if (results != null) {
log.tracef("Response from %s with results %s", address, results.size());
Set<Integer> segmentsCompleted;
CacheEntry<K, Object>[] lastCompleted = new CacheEntry[1];
if (listenerNotifier != null) {
segmentsCompleted = new HashSet<>();
} else {
segmentsCompleted = null;
}
results.forEach(
e -> {
K key = e.getKey();
int segment = ch.getSegment(key);
Set<K> keys = referenceArray.get(segment);
// On completion we null this out first - thus we don't need to add
if (keys != null) {
keys.add(key);
} else if (segmentsCompleted != null) {
segmentsCompleted.add(segment);
lastCompleted[0] = e;
}
consumer.accept(valueFunction.apply(e));
});
if (lastCompleted[0] != null) {
listenerNotifier.addSegmentsForObject(lastCompleted[0], segmentsCompleted);
}
return segmentsCompleted;
}
return null;
}
/**
* Listen to a message from JMS from a given destination by name.
*
* @param destinationName destinationName
* @param messageListener messageListener
*/
public void listenTextMessagesWithDestination(
final String destinationName, final Consumer<String> messageListener) {
final MessageConsumer consumer = getConsumer(destinationName);
try {
consumer.setMessageListener(
message -> {
try {
messageListener.accept(((TextMessage) message).getText());
if (acknowledgeMode == Session.CLIENT_ACKNOWLEDGE) {
message.acknowledge();
}
} catch (JMSException e) {
throw new IllegalStateException(
"Unable to register get text from message in listener " + destinationName, e);
} catch (Exception ex) {
throw new IllegalStateException("Unable handle JMS Consumer " + destinationName, ex);
}
});
} catch (JMSException e) {
throw new IllegalStateException("Unable to register message listener " + destinationName, e);
}
}
protected void withRedisTransaction(Consumer<Transaction> r, Consumer<Jedis> onOk) {
Jedis redis = getRedis();
Transaction transaction = null;
try {
transaction = redis.multi();
r.accept(transaction);
transaction.exec();
transaction = null;
if (onOk != null) {
onOk.accept(redis);
}
} finally {
rollback(transaction);
redis.close();
}
}
@Override
public boolean tryAdvance(Consumer<? super R> action) {
if (left != null) {
if (accept(handleLeft(), action)) {
return true;
}
}
if (cur == none()) { // start
if (!source.tryAdvance(this)) {
return accept(pushRight(none(), none()), action);
}
}
T first = cur;
R acc = mapper.apply(cur);
T last = first;
while (source.tryAdvance(this)) {
if (!this.mergeable.test(last, cur)) {
action.accept(acc);
return true;
}
last = cur;
acc = this.accumulator.apply(acc, last);
}
return accept(pushRight(acc, last), action);
}
@Override
public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
if (shouldVisit(file, attrs)) {
consumer.accept(file);
}
return FileVisitResult.CONTINUE;
}
private void parseAndConsumeBufferContent(
CriteriaSet criteriaSet, Consumer<Message> consumer, List<String> buffer) {
Message msg = parseOneMessage(buffer);
if (msg != null && criteriaSet.IsSatisfiedBy(msg)) consumer.accept(msg);
buffer.clear();
}
/**
* Find the path from start to goal using breadth first search
*
* @param start The starting location
* @param goal The goal location
* @param nodeSearched A hook for visualization. See assignment instructions for how to use it.
* @return The list of intersections that form the shortest (unweighted) path from start to goal
* (including both start and goal).
*/
public List<GeographicPoint> bfs(
GeographicPoint start, GeographicPoint goal, Consumer<GeographicPoint> nodeSearched) {
// TODO: Implement this method in WEEK 2
// Hook for visualization. See writeup.
// nodeSearched.accept(next.getLocation());
Queue<GeographicPoint> queue = new LinkedList<GeographicPoint>();
Set<GeographicPoint> visited = new HashSet<GeographicPoint>();
Map<GeographicPoint, GeographicPoint> parentMap =
new HashMap<GeographicPoint, GeographicPoint>();
queue.add(start);
visited.add(start);
while (!queue.isEmpty()) {
GeographicPoint curr = queue.poll();
nodeSearched.accept(curr);
if (curr.equals(goal)) { // reaches the goal
return RetrievePath(parentMap, start, goal); // retrieve the path
}
MapVertex node = Vertices.get(curr); // the MapVertex associated with the location curr
Set<MapEdge> edges = node.getEdges(); // the edges connected to the node
for (MapEdge edge : edges) {
MapVertex next = edge.getEnd(); // neighbor of the location curr
GeographicPoint nextLoc = next.getLocation();
if (!visited.contains(nextLoc)) {
visited.add(nextLoc);
parentMap.put(nextLoc, curr); // set curr as the parent of next in tha path map
queue.add(nextLoc);
}
}
}
/////// if the goal is not achievable
return null;
}
private void map(final Consumer<MapCell> mapping, final MapCell[][] map) {
for (int i = 0; i < map.length; i++) {
for (int j = 0; j < map[0].length; j++) {
mapping.accept(map[i][j]);
}
}
}
/** TODO: Documentation */
default boolean ifPresent(final Consumer<T> consumer) {
if (this.isPresent()) {
consumer.accept(this.get());
return true;
}
return false;
}
private boolean accept(R acc, Consumer<? super R> action) {
if (acc != NONE) {
action.accept(acc);
return true;
}
return false;
}
@Override
public boolean tryAdvance(Consumer<? super ByteBuffer> action) {
Objects.requireNonNull(action);
int messageOffset = offset + MessageLengthFrameDecoder.HEADER_LENGTH;
if (messageOffset > buffer.limit()) {
return false;
}
frameDecoder.wrap(buffer);
frameDecoder.decodeFrameHeader();
final int messageLength = frameDecoder.getMessageLength();
int messageLimit = offset + MessageLengthFrameDecoder.HEADER_LENGTH + messageLength;
if (messageLength <= 0 || (messageLimit > buffer.limit())) {
return false;
}
ByteBuffer message = buffer.duplicate();
message.order(originalByteOrder);
message.limit(messageLimit);
action.accept(message);
offset = messageLimit;
buffer.position(messageLimit);
return true;
}
public final ServerStarter start(Stage stage, Consumer<ServerBuilder> consumer) {
notNull(consumer, "Null ServerBuilder consumer");
/* Create a new injector and set up the module */
final Injector injector =
Guice.createInjector(stage, (binder) -> consumer.accept(new ServerBuilder(binder)));
/* Get a hold on our HttpServer instance */
final HttpServer server = injector.getInstance(HttpServer.class);
final String serverName = server.getServerConfiguration().getName();
/* Attempt to start our server */
try {
log.info("Starting server %s", serverName);
server.start();
} catch (IOException exception) {
log.error(exception, "Exception starting server %s", serverName);
System.exit(1);
}
/* Add a shutdown hook terminating the server on exit */
Runtime.getRuntime()
.addShutdownHook(
new Thread() {
@Override
public void run() {
log.info("Shutting down server %s", serverName);
server.shutdown();
}
});
/* Return self for chaining */
this.server = server;
return this;
}
/**
* Performs the given action for each element contained within this {@code LinkedList} in
* <em>forward</em> order. The behavior of this method is undefined if this list is modified
* during the iteration process.
*
* @param action The action to apply to each element in this list.
* @throws NullPointerException if the specified argument {@code action} is {@code null}.
*/
@Override
public void forEach(Consumer<? super E> action) {
Objects.requireNonNull(action);
for (Node<E> n = first; n != null; n = n.nextLink) {
action.accept(n.item);
}
}
public JsPromise then(Consumer onSuccessCallBack) {
// future.thenAccept(onSuccessCallBack);
onSuccess = onSuccessCallBack;
executor.submit(
() -> {
try {
onSuccessCallBack.accept(future.get());
} catch (InterruptedException e) {
throw new RuntimeException(e);
} catch (ExecutionException e) {
onError.accept(e);
}
});
return this;
}
@Override
public void onError(WebContext ctx, HandledException error) {
if (error != null) {
UserContext.message(Message.error(error.getMessage()));
}
defaultRoute.accept(ctx);
}