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java.lang.Objectorg.infinispan.distribution.ch.AbstractConsistentHash
public abstract class AbstractConsistentHash
An abstract consistent hash implementation that handles common implementations of certain methods. In particular,
default implementations of locateAll(java.util.Collection, int)
and isKeyLocalToAddress(org.infinispan.remoting.transport.Address, Object, int)
.
ConsistentHash.locate(Object, int)
first (and
sometimes in a loop). Depending on the algorithm used, there may be more efficient ways to achieve the same results
and in such cases the methods provided here should be overridden.
Field Summary | |
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protected Set<Address> |
caches
|
Constructor Summary | |
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AbstractConsistentHash()
|
Method Summary | |
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Set<Address> |
getCaches()
Should return a collection of cache addresses in the cluster. |
boolean |
isKeyLocalToAddress(Address a,
Object key,
int replCount)
Test to see whether a key is mapped to a given address. |
Map<Object,List<Address>> |
locateAll(Collection<Object> keys,
int replCount)
The logical equivalent of calling ConsistentHash.locate(Object, int) multiple times for each key in the collection of
keys. |
void |
setCaches(Set<Address> caches)
Sets the collection of cache addresses in the cluster. |
void |
setTopologyInfo(TopologyInfo topologyInfo)
Sets cluster topology information that can be used by CH to improve fault tolerance by smart choosing of backups. |
String |
toString()
|
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Methods inherited from interface org.infinispan.distribution.ch.ConsistentHash |
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getBackupsForNode, getHashId, getHashSpace, getStateProvidersOnJoin, getStateProvidersOnLeave, locate |
Field Detail |
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protected volatile Set<Address> caches
Constructor Detail |
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public AbstractConsistentHash()
Method Detail |
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public void setCaches(Set<Address> caches)
ConsistentHash
setCaches
in interface ConsistentHash
caches
- A set of unique caches in cluster.public Set<Address> getCaches()
ConsistentHash
getCaches
in interface ConsistentHash
public Map<Object,List<Address>> locateAll(Collection<Object> keys, int replCount)
ConsistentHash
ConsistentHash.locate(Object, int)
multiple times for each key in the collection of
keys. Implementations may be optimised for such a bulk lookup, or may just repeatedly call ConsistentHash.locate(Object,
int)
.
locateAll
in interface ConsistentHash
keys
- keys to locatereplCount
- replication count (number of copies) for each key
public boolean isKeyLocalToAddress(Address a, Object key, int replCount)
ConsistentHash
isKeyLocalToAddress
in interface ConsistentHash
a
- address to testkey
- key to testreplCount
- repl count
public void setTopologyInfo(TopologyInfo topologyInfo)
ConsistentHash
setTopologyInfo
in interface ConsistentHash
public String toString()
toString
in class Object
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