private static void doWork(String task) {
for (char ch : task.toCharArray()) {
if (ch == '.') {
try {
Thread.sleep(1000);
} catch (InterruptedException _ignored) {
Thread.currentThread().interrupt();
}
}
}
}
private synchronized void checkConnection() {
if (this.isConnected()) return;
for (int tries = 0;
(this.tries == NO_TRIES_LIMIT || tries < this.tries) && !this.isConnected();
++tries) {
if (this.verbose)
Logger.getLogger(RabbitMQAutoConnection.class.getName())
.info(
"Attempting to "
+ ((this.connection != null) ? "re" : "")
+ "connect to the rabbitmq server.");
this.factory.setHost(this.hosts.get(this.random.nextInt(this.hosts.size())));
try {
this.connection =
this.factory.newConnection(); // TODO: call newConnection with null, Address[] ?
} catch (IOException ignored) {
}
try {
Thread.sleep(this.interval);
} catch (InterruptedException ignored) {
}
}
if (this.isConnected()) {
if (this.verbose)
Logger.getLogger(RabbitMQAutoConnection.class.getName())
.info("Connected to the rabbitmq server.");
} else throw new NoRabbitMQConnectionException();
}
@Override
public void close() {
if (closed) {
return;
}
logger.info("closing rabbitmq river");
closed = true;
thread.interrupt();
}
@Override
public void start() {
connectionFactory = new ConnectionFactory();
connectionFactory.setUsername(rabbitUser);
connectionFactory.setPassword(rabbitPassword);
connectionFactory.setVirtualHost(rabbitVhost);
connectionFactory.setRequestedHeartbeat(new Long(rabbitHeartbeat.getSeconds()).intValue());
logger.info(
"creating rabbitmq river, addresses [{}], user [{}], vhost [{}]",
rabbitAddresses,
connectionFactory.getUsername(),
connectionFactory.getVirtualHost());
thread =
EsExecutors.daemonThreadFactory(settings.globalSettings(), "rabbitmq_river")
.newThread(new Consumer());
thread.start();
}
@Override
public void run() {
while (true) {
if (closed) {
break;
}
try {
connection = connectionFactory.newConnection(rabbitAddresses);
channel = connection.createChannel();
} catch (Exception e) {
if (!closed) {
logger.warn("failed to created a connection / channel", e);
} else {
continue;
}
cleanup(0, "failed to connect");
try {
Thread.sleep(5000);
} catch (InterruptedException e1) {
// ignore, if we are closing, we will exit later
}
}
QueueingConsumer consumer = null;
// define the queue
try {
if (rabbitQueueDeclare) {
// only declare the queue if we should
channel.queueDeclare(
rabbitQueue /*queue*/,
rabbitQueueDurable /*durable*/,
false /*exclusive*/,
rabbitQueueAutoDelete /*autoDelete*/,
rabbitQueueArgs /*extra args*/);
}
if (rabbitExchangeDeclare) {
// only declare the exchange if we should
channel.exchangeDeclare(
rabbitExchange /*exchange*/, rabbitExchangeType /*type*/, rabbitExchangeDurable);
}
channel.basicQos(
rabbitQosPrefetchSize /*qos_prefetch_size*/,
rabbitQosPrefetchCount /*qos_prefetch_count*/,
false);
if (rabbitQueueBind) {
// only bind queue if we should
channel.queueBind(
rabbitQueue /*queue*/,
rabbitExchange /*exchange*/,
rabbitRoutingKey /*routingKey*/);
}
consumer = new QueueingConsumer(channel);
channel.basicConsume(rabbitQueue /*queue*/, false /*noAck*/, consumer);
} catch (Exception e) {
if (!closed) {
logger.warn("failed to create queue [{}]", e, rabbitQueue);
}
cleanup(0, "failed to create queue");
continue;
}
// now use the queue to listen for messages
while (true) {
if (closed) {
break;
}
QueueingConsumer.Delivery task;
try {
task = consumer.nextDelivery();
} catch (Exception e) {
if (!closed) {
logger.error("failed to get next message, reconnecting...", e);
}
cleanup(0, "failed to get message");
break;
}
if (task != null && task.getBody() != null) {
final List<Long> deliveryTags = Lists.newArrayList();
BulkRequestBuilder bulkRequestBuilder = client.prepareBulk();
try {
processBody(task, bulkRequestBuilder);
} catch (Exception e) {
logger.warn(
"failed to parse request for delivery tag [{}], ack'ing...",
e,
task.getEnvelope().getDeliveryTag());
try {
channel.basicAck(task.getEnvelope().getDeliveryTag(), false);
} catch (IOException e1) {
logger.warn("failed to ack [{}]", e1, task.getEnvelope().getDeliveryTag());
}
continue;
}
deliveryTags.add(task.getEnvelope().getDeliveryTag());
if (bulkRequestBuilder.numberOfActions() < bulkSize) {
// try and spin some more of those without timeout, so we have a bigger bulk (bounded
// by the bulk size)
try {
while ((task = consumer.nextDelivery(bulkTimeout.millis())) != null) {
try {
processBody(task, bulkRequestBuilder);
deliveryTags.add(task.getEnvelope().getDeliveryTag());
} catch (Throwable e) {
logger.warn(
"failed to parse request for delivery tag [{}], ack'ing...",
e,
task.getEnvelope().getDeliveryTag());
try {
channel.basicAck(task.getEnvelope().getDeliveryTag(), false);
} catch (Exception e1) {
logger.warn(
"failed to ack on failure [{}]", e1, task.getEnvelope().getDeliveryTag());
}
}
if (bulkRequestBuilder.numberOfActions() >= bulkSize) {
break;
}
}
} catch (InterruptedException e) {
if (closed) {
break;
}
} catch (ShutdownSignalException sse) {
logger.warn(
"Received a shutdown signal! initiatedByApplication: [{}], hard error: [{}]",
sse,
sse.isInitiatedByApplication(),
sse.isHardError());
if (!closed && sse.isInitiatedByApplication()) {
logger.error("failed to get next message, reconnecting...", sse);
}
cleanup(0, "failed to get message");
break;
}
}
if (logger.isTraceEnabled()) {
logger.trace(
"executing bulk with [{}] actions", bulkRequestBuilder.numberOfActions());
}
// if we have no bulk actions we might have processed custom commands, so ack them
if (ordered || bulkRequestBuilder.numberOfActions() == 0) {
try {
if (bulkRequestBuilder.numberOfActions() > 0) {
BulkResponse response = bulkRequestBuilder.execute().actionGet();
if (response.hasFailures()) {
// TODO write to exception queue?
logger.warn("failed to execute: " + response.buildFailureMessage());
}
}
} catch (Exception e) {
logger.warn("failed to execute bulk", e);
}
for (Long deliveryTag : deliveryTags) {
try {
channel.basicAck(deliveryTag, false);
} catch (Exception e1) {
logger.warn("failed to ack [{}]", e1, deliveryTag);
}
}
} else {
if (bulkRequestBuilder.numberOfActions() > 0) {
bulkRequestBuilder.execute(
new ActionListener<BulkResponse>() {
@Override
public void onResponse(BulkResponse response) {
if (response.hasFailures()) {
// TODO write to exception queue?
logger.warn("failed to execute: " + response.buildFailureMessage());
}
for (Long deliveryTag : deliveryTags) {
try {
channel.basicAck(deliveryTag, false);
} catch (Exception e1) {
logger.warn("failed to ack [{}]", e1, deliveryTag);
}
}
}
@Override
public void onFailure(Throwable e) {
logger.warn(
"failed to execute bulk for delivery tags [{}], not ack'ing",
e,
deliveryTags);
}
});
}
}
}
}
}
cleanup(0, "closing river");
}
@Override
public synchronized void start() {
setDaemon(true);
super.start();
}