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

Class GenericProtobufObjectOutput

java.lang.Object

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

All Implemented Interfaces:

DataOutput, ObjectOutput

public class GenericProtobufObjectOutput
extends Object
implements ObjectOutput

GenericGoogleProtobuf object output implementation

Constructor Summary

Constructors

Constructor and Description
GenericProtobufObjectOutput(OutputStream os)

Method Summary

Modifier and Type	Method and Description
void	flushBuffer() Flush buffer.
void	writeAttachments(Map<String,Object> attachments)
void	writeBool(boolean v) Write boolean.
void	writeByte(byte v) Write byte.
void	writeBytes(byte[] b) Write byte array.
void	writeBytes(byte[] b, int off, int len) Write byte array.
void	writeDouble(double v) Write double.
void	writeEvent(Object data)
void	writeFloat(float v) Write float.
void	writeInt(int v) Write integer.
void	writeLong(long v) Write long.
void	writeObject(Object obj) write object.
void	writeShort(short v) Write short.
void	writeThrowable(Object obj) The following methods are customized for the requirement of Dubbo's RPC protocol implementation.
void	writeUTF(String v) Write string.

Methods inherited from class java.lang.Object

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

Constructor Detail

GenericProtobufObjectOutput

public GenericProtobufObjectOutput(OutputStream os)

Method Detail

writeBool

public void writeBool(boolean v)
               throws IOException

Description copied from interface: DataOutput

Write boolean.

Specified by:

writeBool in interface DataOutput

Parameters:

v - value.

Throws:

IOException

writeByte

public void writeByte(byte v)
               throws IOException

Description copied from interface: DataOutput

Write byte.

Specified by:

writeByte in interface DataOutput

Parameters:

v - value.

Throws:

IOException

writeShort

public void writeShort(short v)
                throws IOException

Description copied from interface: DataOutput

Write short.

Specified by:

writeShort in interface DataOutput

Parameters:

v - value.

Throws:

IOException

writeInt

public void writeInt(int v)
              throws IOException

Description copied from interface: DataOutput

Write integer.

Specified by:

writeInt in interface DataOutput

Parameters:

v - value.

Throws:

IOException

writeLong

public void writeLong(long v)
               throws IOException

Description copied from interface: DataOutput

Write long.

Specified by:

writeLong in interface DataOutput

Parameters:

v - value.

Throws:

IOException

writeFloat

public void writeFloat(float v)
                throws IOException

Description copied from interface: DataOutput

Write float.

Specified by:

writeFloat in interface DataOutput

Parameters:

v - value.

Throws:

IOException

writeDouble

public void writeDouble(double v)
                 throws IOException

Description copied from interface: DataOutput

Write double.

Specified by:

writeDouble in interface DataOutput

Parameters:

v - value.

Throws:

IOException

writeUTF

public void writeUTF(String v)
              throws IOException

Description copied from interface: DataOutput

Write string.

Specified by:

writeUTF in interface DataOutput

Parameters:

v - value.

Throws:

IOException

writeBytes

public void writeBytes(byte[] b)
                throws IOException

Description copied from interface: DataOutput

Write byte array.

Specified by:

writeBytes in interface DataOutput

Parameters:

b - value.

Throws:

IOException

writeBytes

public void writeBytes(byte[] b,
                       int off,
                       int len)
                throws IOException

Description copied from interface: DataOutput

Write byte array.

Specified by:

writeBytes in interface DataOutput

Parameters:

b - value.

off - the start offset in the data.

len - the number of bytes that are written.

Throws:

IOException

writeObject

public void writeObject(Object obj)
                 throws IOException

Description copied from interface: ObjectOutput

write object.

Specified by:

writeObject in interface ObjectOutput

Parameters:

obj - object.

Throws:

IOException

writeEvent

public void writeEvent(Object data)
                throws IOException

Specified by:

writeEvent in interface ObjectOutput

Throws:

IOException

writeThrowable

public void writeThrowable(Object obj)
                    throws IOException

Description copied from interface: ObjectOutput

The following methods are customized for the requirement of Dubbo's RPC protocol implementation. Legacy protocol implementation will try to write Map, Throwable and Null value directly to the stream, which does not meet the restrictions of all serialization protocols.

See how ProtobufSerialization, KryoSerialization implemented these methods for more details.

The binding of RPC protocol and biz serialization protocol is not a good practice. Encoding of RPC protocol should be highly independent and portable, easy to cross platforms and languages, for example, like the http headers, restricting the content of headers / attachments to Ascii strings and uses ISO_8859_1 to encode them. https://tools.ietf.org/html/rfc7540#section-8.1.2

Specified by:

writeThrowable in interface ObjectOutput

Throws:

IOException

writeAttachments

public void writeAttachments(Map<String,Object> attachments)
                      throws IOException

Specified by:

writeAttachments in interface ObjectOutput

Throws:

IOException

flushBuffer

public void flushBuffer()
                 throws IOException

Description copied from interface: DataOutput

Flush buffer.

Specified by:

flushBuffer in interface DataOutput

Throws:

IOException