Package org.apache.pulsar.broker.loadbalance.impl

Class BundleRangeCache

java.lang.Object

org.apache.pulsar.broker.loadbalance.impl.BundleRangeCache

public class BundleRangeCache
extends Object

The cache for the bundle ranges. The first key is the broker id and the second key is the namespace name, the value is the set of bundle ranges of that namespace. When the broker key is accessed if the associated value is not present, an empty map will be created as the initial value that will never be removed. Therefore, for each broker, there could only be one internal map during the whole lifetime. Then it will be safe to apply the synchronized key word on the value for thread safe operations.

Constructor Summary

Constructors

Constructor	Description
BundleRangeCache()

Method Summary

Modifier and Type	Method	Description
void	add(String broker, String namespace, String bundleRange)
Map<String,List<String>>	getBrokerToNamespacesMap()	Get the map whose key is the broker and value is the namespace that has at least 1 cached bundle range.
int	getBundleRangeCount(String broker, String namespace)
void	reloadFromBundles(String broker, Stream<String> bundles)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

BundleRangeCache

public BundleRangeCache()

Method Details

reloadFromBundles

public void reloadFromBundles(String broker,
 Stream<String> bundles)

add

public void add(String broker,
 String namespace,
 String bundleRange)

getBundleRangeCount

public int getBundleRangeCount(String broker,
 String namespace)

getBrokerToNamespacesMap

public Map<String,List<String>> getBrokerToNamespacesMap()

Get the map whose key is the broker and value is the namespace that has at least 1 cached bundle range.