com.spotify.folsom.client.ascii

Class DeleteWithCasRequest

java.lang.Object

java.util.concurrent.CompletableFuture<V>

com.spotify.folsom.client.AbstractRequest<T>

com.spotify.folsom.client.ascii.AsciiRequest<MemcacheStatus>

com.spotify.folsom.client.ascii.DeleteWithCasRequest

All Implemented Interfaces:

Request<MemcacheStatus>, java.util.concurrent.CompletionStage<MemcacheStatus>, java.util.concurrent.Future<MemcacheStatus>

public class DeleteWithCasRequest
extends AsciiRequest<MemcacheStatus>

Deletes a key with CAS check.

Since the ASCII protocol does not have a CAS field for the delete command, we instead use a CAS set with a dummy value and negative exptime, which is guaranteed to immediately expire the key.

Nested Class Summary

Nested classes/interfaces inherited from class java.util.concurrent.CompletableFuture

java.util.concurrent.CompletableFuture.AsynchronousCompletionTask

Field Summary

Fields

Modifier and Type	Field and Description
private long	cas
private static byte[]	CMD_BYTES
private static byte[]	FLAGS_EXPTIME_LENGTH_BYTES
private static byte[]	VALUE_BYTES

Fields inherited from class com.spotify.folsom.client.ascii.AsciiRequest

NEWLINE_BYTES, SPACE_BYTES

Fields inherited from class com.spotify.folsom.client.AbstractRequest

key

Constructor Summary

Constructors

Constructor and Description
DeleteWithCasRequest(byte[] key, long cas)

Method Summary

Modifier and Type	Method and Description
void	handle(AsciiResponse response, HostAndPort server)
io.netty.buffer.ByteBuf	writeRequest(io.netty.buffer.ByteBufAllocator alloc, java.nio.ByteBuffer dst)

Methods inherited from class com.spotify.folsom.client.ascii.AsciiRequest

handle

Methods inherited from class com.spotify.folsom.client.AbstractRequest

asFuture, encodeKey, encodeKeys, fail, getKey, succeed, toBuffer, toBuffer

Methods inherited from class java.util.concurrent.CompletableFuture

acceptEither, acceptEitherAsync, acceptEitherAsync, allOf, anyOf, applyToEither, applyToEitherAsync, applyToEitherAsync, cancel, complete, completedFuture, completeExceptionally, exceptionally, get, get, getNow, getNumberOfDependents, handle, handleAsync, handleAsync, isCancelled, isCompletedExceptionally, isDone, join, obtrudeException, obtrudeValue, runAfterBoth, runAfterBothAsync, runAfterBothAsync, runAfterEither, runAfterEitherAsync, runAfterEitherAsync, runAsync, runAsync, supplyAsync, supplyAsync, thenAccept, thenAcceptAsync, thenAcceptAsync, thenAcceptBoth, thenAcceptBothAsync, thenAcceptBothAsync, thenApply, thenApplyAsync, thenApplyAsync, thenCombine, thenCombineAsync, thenCombineAsync, thenCompose, thenComposeAsync, thenComposeAsync, thenRun, thenRunAsync, thenRunAsync, toCompletableFuture, toString, whenComplete, whenCompleteAsync, whenCompleteAsync

Methods inherited from class java.lang.Object

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

Field Detail

CMD_BYTES

private static final byte[] CMD_BYTES

FLAGS_EXPTIME_LENGTH_BYTES

private static final byte[] FLAGS_EXPTIME_LENGTH_BYTES

VALUE_BYTES

private static final byte[] VALUE_BYTES

cas

private final long cas

Constructor Detail

DeleteWithCasRequest

public DeleteWithCasRequest(byte[] key,
                            long cas)

Method Detail

writeRequest

public io.netty.buffer.ByteBuf writeRequest(io.netty.buffer.ByteBufAllocator alloc,
                                            java.nio.ByteBuffer dst)

handle

public void handle(AsciiResponse response,
                   HostAndPort server)
            throws java.io.IOException

Specified by:

handle in class AsciiRequest<MemcacheStatus>

Throws:

java.io.IOException