tachyon.network.protocol

Class RPCMessage

java.lang.Object

tachyon.network.protocol.RPCMessage

All Implemented Interfaces:

EncodedMessage

Direct Known Subclasses:

RPCRequest, RPCResponse

public abstract class RPCMessage
extends Object
implements EncodedMessage

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	RPCMessage.Type

Constructor Summary

Constructors

Constructor and Description
RPCMessage()

Method Summary

Methods

Modifier and Type	Method and Description
static io.netty.handler.codec.ByteToMessageDecoder	createFrameDecoder() Creates a decoder that splits up the incoming ByteBuf into new ByteBuf's according to a length field in the input.
static RPCMessage	decodeMessage(RPCMessage.Type type, io.netty.buffer.ByteBuf in) Returns the message of message type 'type', decoded from the input ByteBuf.
DataBuffer	getPayloadDataBuffer() Returns the data buffer of the payload.
abstract RPCMessage.Type	getType() Returns the type of the message.
boolean	hasPayload() Returns true if the message has a payload.
void	validate() Validate the message.

Methods inherited from class java.lang.Object

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

Methods inherited from interface tachyon.network.protocol.EncodedMessage

encode, getEncodedLength

Constructor Detail

RPCMessage

public RPCMessage()

Method Detail

getType

public abstract RPCMessage.Type getType()

Returns the type of the message.

Returns:

the message type

validate

public void validate()

Validate the message. Throws an Exception if the message is invalid.

hasPayload

public boolean hasPayload()

Returns true if the message has a payload. The encoder will send the payload with a more efficient method.

Returns:

true if the message has a payload, false otherwise

getPayloadDataBuffer

public DataBuffer getPayloadDataBuffer()

Returns the data buffer of the payload.

Returns:

The DataBuffer representing the payload

createFrameDecoder

public static io.netty.handler.codec.ByteToMessageDecoder createFrameDecoder()

Creates a decoder that splits up the incoming ByteBuf into new ByteBuf's according to a length field in the input. The encoding scheme is: [(long) frame length][message payload] The frame length is NOT included in the output ByteBuf.

Returns:

the frame decoder for Netty

decodeMessage

public static RPCMessage decodeMessage(RPCMessage.Type type,
                       io.netty.buffer.ByteBuf in)

Returns the message of message type 'type', decoded from the input ByteBuf. This must be updated to add new message types.

Parameters:

type - The type of message to decode

in - the input ByteBuf

Returns:

the decoded RPCMessage