com.couchbase.client.core.endpoint.kv

Class KeyValueHandler

java.lang.Object

io.netty.channel.ChannelHandlerAdapter

io.netty.channel.ChannelInboundHandlerAdapter

io.netty.channel.ChannelDuplexHandler

io.netty.handler.codec.MessageToMessageCodec<RESPONSE,REQUEST>

com.couchbase.client.core.endpoint.AbstractGenericHandler<FullBinaryMemcacheResponse,BinaryMemcacheRequest,BinaryRequest>

com.couchbase.client.core.endpoint.kv.KeyValueHandler

All Implemented Interfaces:

ChannelHandler, ChannelInboundHandler, ChannelOutboundHandler

public class KeyValueHandler
extends AbstractGenericHandler<FullBinaryMemcacheResponse,BinaryMemcacheRequest,BinaryRequest>

The KeyValueHandler is responsible for encoding BinaryRequests into lower level BinaryMemcacheRequests as well as decoding FullBinaryMemcacheResponses into CouchbaseResponses.

Since:

1.0

Author:

Michael Nitschinger

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	KeyValueHandler.KeepAliveRequest
protected static class	KeyValueHandler.KeepAliveResponse

Nested classes/interfaces inherited from interface io.netty.channel.ChannelHandler

ChannelHandler.Sharable

Field Summary

Fields

Modifier and Type	Field and Description
static byte	OP_APPEND
static byte	OP_COUNTER_DECR
static byte	OP_COUNTER_INCR
static byte	OP_GET
static byte	OP_GET_ALL_MUTATION_TOKENS
static byte	OP_GET_AND_LOCK
static byte	OP_GET_AND_TOUCH
static byte	OP_GET_BUCKET_CONFIG
static byte	OP_GET_REPLICA
static byte	OP_INSERT
static byte	OP_NOOP
static byte	OP_OBSERVE
static byte	OP_OBSERVE_SEQ
static byte	OP_PREPEND
static byte	OP_REMOVE
static byte	OP_REPLACE
static byte	OP_STAT
static byte	OP_SUB_ARRAY_ADD_UNIQUE
static byte	OP_SUB_ARRAY_INSERT
static byte	OP_SUB_ARRAY_PUSH_FIRST
static byte	OP_SUB_ARRAY_PUSH_LAST
static byte	OP_SUB_COUNTER
static byte	OP_SUB_DELETE
static byte	OP_SUB_DICT_ADD
static byte	OP_SUB_DICT_UPSERT
static byte	OP_SUB_EXIST
static byte	OP_SUB_GET
static byte	OP_SUB_MULTI_LOOKUP
static byte	OP_SUB_MULTI_MUTATION
static byte	OP_SUB_REPLACE
static byte	OP_TOUCH
static byte	OP_UNLOCK
static byte	OP_UPSERT
static byte	SUBDOC_BITMASK_MKDIR_P The bitmask for sub-document extras “command” section (third byte of the extras) that activates the creation of missing intermediate nodes in the JSON path.

Fields inherited from class com.couchbase.client.core.endpoint.AbstractGenericHandler

CHARSET

Constructor Summary

Constructors

Constructor and Description
KeyValueHandler(AbstractEndpoint endpoint, com.lmax.disruptor.EventSink<ResponseEvent> responseBuffer, boolean isTransient) Creates a new KeyValueHandler with the default queue for requests.

Method Summary

Modifier and Type	Method and Description
protected CouchbaseRequest	createKeepAliveRequest() Override to return a non-null request to be fired in the pipeline in case a keep alive is triggered.
protected CouchbaseResponse	decodeResponse(ChannelHandlerContext ctx, FullBinaryMemcacheResponse msg) Decodes the incoming response and transforms it into a CouchbaseResponse.
protected BinaryMemcacheRequest	encodeRequest(ChannelHandlerContext ctx, BinaryRequest msg) Encode the outgoing request and return it in encoded format.
protected ServiceType	serviceType() Returns the ServiceType associated with this handler.
protected void	sideEffectRequestToCancel(BinaryRequest request) Releasing the content of requests that are to be cancelled.
void	userEventTriggered(ChannelHandlerContext ctx, Object evt)

Methods inherited from class com.couchbase.client.core.endpoint.AbstractGenericHandler

channelActive, channelInactive, channelWritabilityChanged, connect, currentRequest, currentRequest, decode, encode, endpoint, env, exceptionCaught, finishedDecoding, handlerRemoved, logIdent, onKeepAliveFired, onKeepAliveResponse, publishResponse, remoteHostname

Methods inherited from class io.netty.handler.codec.MessageToMessageCodec

acceptInboundMessage, acceptOutboundMessage, channelRead, write

Methods inherited from class io.netty.channel.ChannelDuplexHandler

bind, close, deregister, disconnect, flush, read

Methods inherited from class io.netty.channel.ChannelInboundHandlerAdapter

channelReadComplete, channelRegistered, channelUnregistered

Methods inherited from class io.netty.channel.ChannelHandlerAdapter

handlerAdded, isSharable

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.netty.channel.ChannelHandler

handlerAdded

Field Detail

OP_GET_BUCKET_CONFIG

public static final byte OP_GET_BUCKET_CONFIG

See Also:

Constant Field Values

OP_GET

public static final byte OP_GET

See Also:

Constant Field Values

OP_GET_AND_LOCK

public static final byte OP_GET_AND_LOCK

See Also:

Constant Field Values

OP_GET_AND_TOUCH

public static final byte OP_GET_AND_TOUCH

See Also:

Constant Field Values

OP_GET_REPLICA

public static final byte OP_GET_REPLICA

See Also:

Constant Field Values

OP_INSERT

public static final byte OP_INSERT

See Also:

Constant Field Values

OP_UPSERT

public static final byte OP_UPSERT

See Also:

Constant Field Values

OP_REPLACE

public static final byte OP_REPLACE

See Also:

Constant Field Values

OP_REMOVE

public static final byte OP_REMOVE

See Also:

Constant Field Values

OP_COUNTER_INCR

public static final byte OP_COUNTER_INCR

See Also:

Constant Field Values

OP_COUNTER_DECR

public static final byte OP_COUNTER_DECR

See Also:

Constant Field Values

OP_UNLOCK

public static final byte OP_UNLOCK

See Also:

Constant Field Values

OP_OBSERVE

public static final byte OP_OBSERVE

See Also:

Constant Field Values

OP_OBSERVE_SEQ

public static final byte OP_OBSERVE_SEQ

See Also:

Constant Field Values

OP_TOUCH

public static final byte OP_TOUCH

See Also:

Constant Field Values

OP_APPEND

public static final byte OP_APPEND

See Also:

Constant Field Values

OP_PREPEND

public static final byte OP_PREPEND

See Also:

Constant Field Values

OP_NOOP

public static final byte OP_NOOP

See Also:

Constant Field Values

OP_STAT

public static final byte OP_STAT

See Also:

Constant Field Values

OP_GET_ALL_MUTATION_TOKENS

public static final byte OP_GET_ALL_MUTATION_TOKENS

See Also:

Constant Field Values

OP_SUB_GET

public static final byte OP_SUB_GET

See Also:

Constant Field Values

OP_SUB_EXIST

public static final byte OP_SUB_EXIST

See Also:

Constant Field Values

OP_SUB_DICT_ADD

public static final byte OP_SUB_DICT_ADD

See Also:

Constant Field Values

OP_SUB_DICT_UPSERT

public static final byte OP_SUB_DICT_UPSERT

See Also:

Constant Field Values

OP_SUB_DELETE

public static final byte OP_SUB_DELETE

See Also:

Constant Field Values

OP_SUB_REPLACE

public static final byte OP_SUB_REPLACE

See Also:

Constant Field Values

OP_SUB_ARRAY_PUSH_LAST

public static final byte OP_SUB_ARRAY_PUSH_LAST

See Also:

Constant Field Values

OP_SUB_ARRAY_PUSH_FIRST

public static final byte OP_SUB_ARRAY_PUSH_FIRST

See Also:

Constant Field Values

OP_SUB_ARRAY_INSERT

public static final byte OP_SUB_ARRAY_INSERT

See Also:

Constant Field Values

OP_SUB_ARRAY_ADD_UNIQUE

public static final byte OP_SUB_ARRAY_ADD_UNIQUE

See Also:

Constant Field Values

OP_SUB_COUNTER

public static final byte OP_SUB_COUNTER

See Also:

Constant Field Values

OP_SUB_MULTI_LOOKUP

public static final byte OP_SUB_MULTI_LOOKUP

See Also:

Constant Field Values

OP_SUB_MULTI_MUTATION

public static final byte OP_SUB_MULTI_MUTATION

See Also:

Constant Field Values

SUBDOC_BITMASK_MKDIR_P

public static final byte SUBDOC_BITMASK_MKDIR_P

The bitmask for sub-document extras “command” section (third byte of the extras) that activates the creation of missing intermediate nodes in the JSON path.

See Also:

Constant Field Values

Constructor Detail

KeyValueHandler

public KeyValueHandler(AbstractEndpoint endpoint,
                       com.lmax.disruptor.EventSink<ResponseEvent> responseBuffer,
                       boolean isTransient)

Creates a new KeyValueHandler with the default queue for requests.

Parameters:

endpoint - the AbstractEndpoint to coordinate with.

responseBuffer - the RingBuffer to push responses into.

Method Detail

encodeRequest

protected BinaryMemcacheRequest encodeRequest(ChannelHandlerContext ctx,
                                              BinaryRequest msg)
                                       throws Exception

Description copied from class: AbstractGenericHandler

Encode the outgoing request and return it in encoded format.

This method needs to be implemented by the child handler and is responsible for the actual conversion.

Specified by:

encodeRequest in class AbstractGenericHandler<FullBinaryMemcacheResponse,BinaryMemcacheRequest,BinaryRequest>

Parameters:

ctx - the context passed in.

msg - the outgoing message.

Returns:

the encoded request.

Throws:

Exception - as a generic error.

decodeResponse

protected CouchbaseResponse decodeResponse(ChannelHandlerContext ctx,
                                           FullBinaryMemcacheResponse msg)
                                    throws Exception

Description copied from class: AbstractGenericHandler

Decodes the incoming response and transforms it into a CouchbaseResponse.

Note that the actual notification is handled by this generic handler, the implementing class only is concerned about the conversion itself.

Specified by:

decodeResponse in class AbstractGenericHandler<FullBinaryMemcacheResponse,BinaryMemcacheRequest,BinaryRequest>

Parameters:

ctx - the context passed in.

msg - the incoming message.

Returns:

a response or null if nothing should be returned.

Throws:

Exception - as a generic error. It will be bubbled up to the user (wrapped in a CouchbaseException) in the onError of the request’s Observable.

sideEffectRequestToCancel

protected void sideEffectRequestToCancel(BinaryRequest request)

Releasing the content of requests that are to be cancelled.

Overrides:

sideEffectRequestToCancel in class AbstractGenericHandler<FullBinaryMemcacheResponse,BinaryMemcacheRequest,BinaryRequest>

Parameters:

request - the request to side effect on.

userEventTriggered

public void userEventTriggered(ChannelHandlerContext ctx,
                               Object evt)
                        throws Exception

Specified by:

userEventTriggered in interface ChannelInboundHandler

Overrides:

userEventTriggered in class AbstractGenericHandler<FullBinaryMemcacheResponse,BinaryMemcacheRequest,BinaryRequest>

Throws:

Exception

createKeepAliveRequest

protected CouchbaseRequest createKeepAliveRequest()

Description copied from class: AbstractGenericHandler

Override to return a non-null request to be fired in the pipeline in case a keep alive is triggered.

Overrides:

createKeepAliveRequest in class AbstractGenericHandler<FullBinaryMemcacheResponse,BinaryMemcacheRequest,BinaryRequest>

Returns:

a CouchbaseRequest to be fired in case of keep alive (null by default).

serviceType

protected ServiceType serviceType()

Description copied from class: AbstractGenericHandler

Returns the ServiceType associated with this handler.

Specified by:

serviceType in class AbstractGenericHandler<FullBinaryMemcacheResponse,BinaryMemcacheRequest,BinaryRequest>

Returns:

the service type.