org.apache.dubbo.common.serialize.protobuf.support

Class GenericProtobufSerialization

java.lang.Object

org.apache.dubbo.common.serialize.protobuf.support.GenericProtobufSerialization

All Implemented Interfaces:

Serialization

public class GenericProtobufSerialization
extends Object
implements Serialization

Currently, the Dubbo protocol / framework data, such as attachments, event data, etc., depends on business layer serialization protocol to do serialization before transmitted. That's a problem when using Protobuf as business serialization protocol, because Protobuf does not support raw java Object types, to solve it, we can use one of the following methods:

• 1. Package these data with Protobuf so that they can be serialized.
• 2. Separate the serialization of Dubbo protocol/framework and the service args (easy to cross-platform, cross-language serialization) to avoid the binding of this part and serialization protocol.

Constructor Summary

Constructors

Constructor and Description
GenericProtobufSerialization()

Method Summary

Modifier and Type	Method and Description
ObjectInput	deserialize(URL url, InputStream input) Get a deserialization implementation instance
String	getContentType() Get content type
byte	getContentTypeId() Get content type unique id, recommended that custom implementations use values different with any value of Constants and don't greater than ExchangeCodec.SERIALIZATION_MASK (31) because dubbo protocol use 5 bits to record serialization ID in header.
ObjectOutput	serialize(URL url, OutputStream output) Get a serialization implementation instance

Methods inherited from class java.lang.Object

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

Constructor Detail

GenericProtobufSerialization

public GenericProtobufSerialization()

Method Detail

getContentTypeId

public byte getContentTypeId()

Description copied from interface: Serialization

Get content type unique id, recommended that custom implementations use values different with any value of Constants and don't greater than ExchangeCodec.SERIALIZATION_MASK (31) because dubbo protocol use 5 bits to record serialization ID in header.

Specified by:

getContentTypeId in interface Serialization

Returns:

content type id

getContentType

public String getContentType()

Description copied from interface: Serialization

Get content type

Specified by:

getContentType in interface Serialization

Returns:

content type

serialize

public ObjectOutput serialize(URL url,
                              OutputStream output)

Description copied from interface: Serialization

Get a serialization implementation instance

Specified by:

serialize in interface Serialization

Parameters:

url - URL address for the remote service

output - the underlying output stream

Returns:

serializer

deserialize

public ObjectInput deserialize(URL url,
                               InputStream input)

Description copied from interface: Serialization

Get a deserialization implementation instance

Specified by:

deserialize in interface Serialization

Parameters:

url - URL address for the remote service

input - the underlying input stream

Returns:

deserializer