Package com.apple.foundationdb.record.provider.foundationdb.keyspace

Class ResolverMappingReplicator

java.lang.Object

com.apple.foundationdb.record.provider.foundationdb.keyspace.ResolverMappingReplicator

All Implemented Interfaces:

AutoCloseable

@API(EXPERIMENTAL)
public class ResolverMappingReplicator
extends Object
implements AutoCloseable

Copies the contents of one LocatableResolver to another. This can be useful for migrating between different underlying LocatableResolver implementations. The copy operation is not transactional so the resulting copy will not be a consistent snapshot of the original. It is the responsibility of the caller to ensure that the copied snapshot is consistent by, for example, preventing any writes to the resolver (see LocatableResolver.enableWriteLock()). After copying, the allocation window on the replica will be set to the largest value seen during the copy operation. This means that all allocations in the replica will be larger than any value present in the original. Note, copying to ScopedDirectoryLayer is not supported.

Constructor Summary

Constructors

Constructor	Description
ResolverMappingReplicator(LocatableResolver primary)
ResolverMappingReplicator(LocatableResolver primary, int transactionRowLimit)
ResolverMappingReplicator(LocatableResolver primary, int transactionRowLimit, long transactionTimeLimitMillis)

Method Summary

Modifier and Type	Method	Description
void	close()
void	copyTo(LocatableResolver replica)	Copy the mappings stored in a LocatableResolver to the specified replica.
CompletableFuture<Void>	copyToAsync(LocatableResolver replica)	Copy the mappings stored in a LocatableResolver to the specified replica.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

ResolverMappingReplicator

public ResolverMappingReplicator(@Nonnull
                                 LocatableResolver primary)

ResolverMappingReplicator

public ResolverMappingReplicator(@Nonnull
                                 LocatableResolver primary,
                                 int transactionRowLimit)

ResolverMappingReplicator

public ResolverMappingReplicator(@Nonnull
                                 LocatableResolver primary,
                                 int transactionRowLimit,
                                 long transactionTimeLimitMillis)

Method Detail

close

public void close()

Specified by:

close in interface AutoCloseable

copyTo

public void copyTo(LocatableResolver replica)

Copy the mappings stored in a LocatableResolver to the specified replica.

Parameters:

replica - The LocatableResolver to copy to.

copyToAsync

public CompletableFuture<Void> copyToAsync(@Nonnull
                                           LocatableResolver replica)

Copy the mappings stored in a LocatableResolver to the specified replica.

Parameters:

replica - The LocatableResolver to copy to.

Returns:

A future that will complete when the copy is finished.

toString

public String toString()

Overrides:

toString in class Object