/** @see ConnectionFactory#refreshMetadata(Collection) */
@Override
public void refreshMetadata(Collection<String> topics) {
try {
this.lock.writeLock().lock();
String brokerAddressesAsString =
ListIterate.collect(this.configuration.getBrokerAddresses(), Functions.getToString())
.makeString(",");
Seq<Broker> brokers = null;
try {
brokers = ClientUtils$.MODULE$.parseBrokerList(brokerAddressesAsString);
} catch (Exception e) {
throw new IllegalStateException(
"Can not parse Kafka Brokers for: [" + brokerAddressesAsString + "]", e);
}
TopicMetadataResponse topicMetadataResponse =
new TopicMetadataResponse(
ClientUtils$.MODULE$.fetchTopicMetadata(
JavaConversions.asScalaSet(new HashSet<>(topics)),
brokers,
this.configuration.getClientId(),
this.configuration.getFetchMetadataTimeout(),
0));
PartitionIterable<TopicMetadata> selectWithoutErrors =
Iterate.partition(
topicMetadataResponse.topicsMetadata(), errorlessTopicMetadataPredicate);
this.metadataCacheHolder.set(
this.metadataCacheHolder.get().merge(selectWithoutErrors.getSelected()));
if (log.isInfoEnabled()) {
for (TopicMetadata topicMetadata : selectWithoutErrors.getRejected()) {
log.info(
String.format("No metadata could be retrieved for '%s'", topicMetadata.topic()),
ErrorMapping.exceptionFor(topicMetadata.errorCode()));
}
}
} finally {
this.lock.writeLock().unlock();
}
}
@Test
public void partition() {
PartitionIterable<Integer> partition = this.lazyIterable.partition(IntegerPredicates.isEven());
Assert.assertEquals(iList(2, 4, 6), partition.getSelected());
Assert.assertEquals(iList(1, 3, 5, 7), partition.getRejected());
}