How to use

findSegment

method

in

org.infinispan.distribution.MagicKey

public MagicKey(String name, Cache<?, ?> primaryOwner, Cache<?, ?>... backupOwners) {
 this.name = name;
 Address primaryAddress = addressOf(primaryOwner);
 this.address = primaryAddress.toString();
 LocalizedCacheTopology cacheTopology = primaryOwner.getAdvancedCache().getDistributionManager().getCacheTopology();
 ConsistentHash ch = cacheTopology.getWriteConsistentHash();
 segment = findSegment(ch.getNumSegments(), s -> {
   List<Address> owners = ch.locateOwnersForSegment(s);
   if (!primaryAddress.equals(owners.get(0))) return false;
   for (Cache<?, ?> backup : backupOwners) {
    if (!owners.contains(addressOf(backup))) return false;
   }
   return true;
 });
 if (segment < 0) {
   throw new IllegalStateException("Could not find any segment owned by " + primaryOwner + ", "
    + Arrays.toString(backupOwners) + ", primary segments: " + segments(primaryOwner)
    + ", backup segments: " + Stream.of(backupOwners).collect(Collectors.toMap(Function.identity(), this::segments)));
 }
 hashcode = getHashCodeForSegment(cacheTopology, segment);
 unique = counter.getAndIncrement();
}

public MagicKey(String name, Cache<?, ?> primaryOwner) {
 this.name = name;
 Address primaryAddress = addressOf(primaryOwner);
 this.address = primaryAddress.toString();
 LocalizedCacheTopology cacheTopology = primaryOwner.getAdvancedCache().getDistributionManager().getCacheTopology();
 ConsistentHash ch = cacheTopology.getWriteConsistentHash();
 int segment = findSegment(ch.getNumSegments(), s -> primaryAddress.equals(ch.locatePrimaryOwnerForSegment(s)));
 if (segment < 0) {
   throw new IllegalStateException("Could not find any segment owned by " + primaryOwner +
    ", primary segments: " + segments(primaryOwner));
 }
 this.segment = segment;
 hashcode = getHashCodeForSegment(cacheTopology, segment);
 unique = counter.getAndIncrement();
}