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org.apache.thrift.protocol.TBinaryProtocol Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.thrift.protocol;
import java.io.UnsupportedEncodingException;
import java.nio.ByteBuffer;
import org.apache.thrift.TException;
import org.apache.thrift.transport.TTransport;
/**
* Binary protocol implementation for thrift.
*
*/
public class TBinaryProtocol extends TProtocol {
private static final TStruct ANONYMOUS_STRUCT = new TStruct();
private static final long NO_LENGTH_LIMIT = -1;
protected static final int VERSION_MASK = 0xffff0000;
protected static final int VERSION_1 = 0x80010000;
/**
* The maximum number of bytes to read from the transport for
* variable-length fields (such as strings or binary) or {@link #NO_LENGTH_LIMIT} for
* unlimited.
*/
private final long stringLengthLimit_;
/**
* The maximum number of elements to read from the network for
* containers (maps, sets, lists), or {@link #NO_LENGTH_LIMIT} for unlimited.
*/
private final long containerLengthLimit_;
protected boolean strictRead_;
protected boolean strictWrite_;
private final byte[] inoutTemp = new byte[8];
/**
* Factory
*/
public static class Factory implements TProtocolFactory {
protected long stringLengthLimit_;
protected long containerLengthLimit_;
protected boolean strictRead_;
protected boolean strictWrite_;
public Factory() {
this(false, true);
}
public Factory(boolean strictRead, boolean strictWrite) {
this(strictRead, strictWrite, NO_LENGTH_LIMIT, NO_LENGTH_LIMIT);
}
public Factory(long stringLengthLimit, long containerLengthLimit) {
this(false, true, stringLengthLimit, containerLengthLimit);
}
public Factory(boolean strictRead, boolean strictWrite, long stringLengthLimit, long containerLengthLimit) {
stringLengthLimit_ = stringLengthLimit;
containerLengthLimit_ = containerLengthLimit;
strictRead_ = strictRead;
strictWrite_ = strictWrite;
}
public TProtocol getProtocol(TTransport trans) {
return new TBinaryProtocol(trans, stringLengthLimit_, containerLengthLimit_, strictRead_, strictWrite_);
}
}
/**
* Constructor
*/
public TBinaryProtocol(TTransport trans) {
this(trans, false, true);
}
public TBinaryProtocol(TTransport trans, boolean strictRead, boolean strictWrite) {
this(trans, NO_LENGTH_LIMIT, NO_LENGTH_LIMIT, strictRead, strictWrite);
}
public TBinaryProtocol(TTransport trans, long stringLengthLimit, long containerLengthLimit) {
this(trans, stringLengthLimit, containerLengthLimit, false, true);
}
public TBinaryProtocol(TTransport trans, long stringLengthLimit, long containerLengthLimit, boolean strictRead, boolean strictWrite) {
super(trans);
stringLengthLimit_ = stringLengthLimit;
containerLengthLimit_ = containerLengthLimit;
strictRead_ = strictRead;
strictWrite_ = strictWrite;
}
public void writeMessageBegin(TMessage message) throws TException {
if (strictWrite_) {
int version = VERSION_1 | message.type;
writeI32(version);
writeString(message.name);
writeI32(message.seqid);
} else {
writeString(message.name);
writeByte(message.type);
writeI32(message.seqid);
}
}
public void writeMessageEnd() {}
public void writeStructBegin(TStruct struct) {}
public void writeStructEnd() {}
public void writeFieldBegin(TField field) throws TException {
writeByte(field.type);
writeI16(field.id);
}
public void writeFieldEnd() {}
public void writeFieldStop() throws TException {
writeByte(TType.STOP);
}
public void writeMapBegin(TMap map) throws TException {
writeByte(map.keyType);
writeByte(map.valueType);
writeI32(map.size);
}
public void writeMapEnd() {}
public void writeListBegin(TList list) throws TException {
writeByte(list.elemType);
writeI32(list.size);
}
public void writeListEnd() {}
public void writeSetBegin(TSet set) throws TException {
writeByte(set.elemType);
writeI32(set.size);
}
public void writeSetEnd() {}
public void writeBool(boolean b) throws TException {
writeByte(b ? (byte)1 : (byte)0);
}
public void writeByte(byte b) throws TException {
inoutTemp[0] = b;
trans_.write(inoutTemp, 0, 1);
}
public void writeI16(short i16) throws TException {
inoutTemp[0] = (byte)(0xff & (i16 >> 8));
inoutTemp[1] = (byte)(0xff & (i16));
trans_.write(inoutTemp, 0, 2);
}
public void writeI32(int i32) throws TException {
inoutTemp[0] = (byte)(0xff & (i32 >> 24));
inoutTemp[1] = (byte)(0xff & (i32 >> 16));
inoutTemp[2] = (byte)(0xff & (i32 >> 8));
inoutTemp[3] = (byte)(0xff & (i32));
trans_.write(inoutTemp, 0, 4);
}
public void writeI64(long i64) throws TException {
inoutTemp[0] = (byte)(0xff & (i64 >> 56));
inoutTemp[1] = (byte)(0xff & (i64 >> 48));
inoutTemp[2] = (byte)(0xff & (i64 >> 40));
inoutTemp[3] = (byte)(0xff & (i64 >> 32));
inoutTemp[4] = (byte)(0xff & (i64 >> 24));
inoutTemp[5] = (byte)(0xff & (i64 >> 16));
inoutTemp[6] = (byte)(0xff & (i64 >> 8));
inoutTemp[7] = (byte)(0xff & (i64));
trans_.write(inoutTemp, 0, 8);
}
public void writeDouble(double dub) throws TException {
writeI64(Double.doubleToLongBits(dub));
}
public void writeString(String str) throws TException {
try {
byte[] dat = str.getBytes("UTF-8");
writeI32(dat.length);
trans_.write(dat, 0, dat.length);
} catch (UnsupportedEncodingException uex) {
throw new TException("JVM DOES NOT SUPPORT UTF-8");
}
}
public void writeBinary(ByteBuffer bin) throws TException {
int length = bin.limit() - bin.position();
writeI32(length);
trans_.write(bin.array(), bin.position() + bin.arrayOffset(), length);
}
/**
* Reading methods.
*/
public TMessage readMessageBegin() throws TException {
int size = readI32();
if (size < 0) {
int version = size & VERSION_MASK;
if (version != VERSION_1) {
throw new TProtocolException(TProtocolException.BAD_VERSION, "Bad version in readMessageBegin");
}
return new TMessage(readString(), (byte)(size & 0x000000ff), readI32());
} else {
if (strictRead_) {
throw new TProtocolException(TProtocolException.BAD_VERSION, "Missing version in readMessageBegin, old client?");
}
return new TMessage(readStringBody(size), readByte(), readI32());
}
}
public void readMessageEnd() {}
public TStruct readStructBegin() {
return ANONYMOUS_STRUCT;
}
public void readStructEnd() {}
public TField readFieldBegin() throws TException {
byte type = readByte();
short id = type == TType.STOP ? 0 : readI16();
return new TField("", type, id);
}
public void readFieldEnd() {}
public TMap readMapBegin() throws TException {
TMap map = new TMap(readByte(), readByte(), readI32());
checkContainerReadLength(map.size);
return map;
}
public void readMapEnd() {}
public TList readListBegin() throws TException {
TList list = new TList(readByte(), readI32());
checkContainerReadLength(list.size);
return list;
}
public void readListEnd() {}
public TSet readSetBegin() throws TException {
TSet set = new TSet(readByte(), readI32());
checkContainerReadLength(set.size);
return set;
}
public void readSetEnd() {}
public boolean readBool() throws TException {
return (readByte() == 1);
}
public byte readByte() throws TException {
if (trans_.getBytesRemainingInBuffer() >= 1) {
byte b = trans_.getBuffer()[trans_.getBufferPosition()];
trans_.consumeBuffer(1);
return b;
}
readAll(inoutTemp, 0, 1);
return inoutTemp[0];
}
public short readI16() throws TException {
byte[] buf = inoutTemp;
int off = 0;
if (trans_.getBytesRemainingInBuffer() >= 2) {
buf = trans_.getBuffer();
off = trans_.getBufferPosition();
trans_.consumeBuffer(2);
} else {
readAll(inoutTemp, 0, 2);
}
return
(short)
(((buf[off] & 0xff) << 8) |
((buf[off+1] & 0xff)));
}
public int readI32() throws TException {
byte[] buf = inoutTemp;
int off = 0;
if (trans_.getBytesRemainingInBuffer() >= 4) {
buf = trans_.getBuffer();
off = trans_.getBufferPosition();
trans_.consumeBuffer(4);
} else {
readAll(inoutTemp, 0, 4);
}
return
((buf[off] & 0xff) << 24) |
((buf[off+1] & 0xff) << 16) |
((buf[off+2] & 0xff) << 8) |
((buf[off+3] & 0xff));
}
public long readI64() throws TException {
byte[] buf = inoutTemp;
int off = 0;
if (trans_.getBytesRemainingInBuffer() >= 8) {
buf = trans_.getBuffer();
off = trans_.getBufferPosition();
trans_.consumeBuffer(8);
} else {
readAll(inoutTemp, 0, 8);
}
return
((long)(buf[off] & 0xff) << 56) |
((long)(buf[off+1] & 0xff) << 48) |
((long)(buf[off+2] & 0xff) << 40) |
((long)(buf[off+3] & 0xff) << 32) |
((long)(buf[off+4] & 0xff) << 24) |
((long)(buf[off+5] & 0xff) << 16) |
((long)(buf[off+6] & 0xff) << 8) |
((long)(buf[off+7] & 0xff));
}
public double readDouble() throws TException {
return Double.longBitsToDouble(readI64());
}
public String readString() throws TException {
int size = readI32();
checkStringReadLength(size);
if (trans_.getBytesRemainingInBuffer() >= size) {
try {
String s = new String(trans_.getBuffer(), trans_.getBufferPosition(), size, "UTF-8");
trans_.consumeBuffer(size);
return s;
} catch (UnsupportedEncodingException e) {
throw new TException("JVM DOES NOT SUPPORT UTF-8");
}
}
return readStringBody(size);
}
public String readStringBody(int size) throws TException {
checkStringReadLength(size);
try {
byte[] buf = new byte[size];
trans_.readAll(buf, 0, size);
return new String(buf, "UTF-8");
} catch (UnsupportedEncodingException uex) {
throw new TException("JVM DOES NOT SUPPORT UTF-8");
}
}
public ByteBuffer readBinary() throws TException {
int size = readI32();
checkStringReadLength(size);
if (trans_.getBytesRemainingInBuffer() >= size) {
ByteBuffer bb = ByteBuffer.wrap(trans_.getBuffer(), trans_.getBufferPosition(), size);
trans_.consumeBuffer(size);
return bb;
}
byte[] buf = new byte[size];
trans_.readAll(buf, 0, size);
return ByteBuffer.wrap(buf);
}
private void checkStringReadLength(int length) throws TProtocolException {
if (length < 0) {
throw new TProtocolException(TProtocolException.NEGATIVE_SIZE,
"Negative length: " + length);
}
if (stringLengthLimit_ != NO_LENGTH_LIMIT && length > stringLengthLimit_) {
throw new TProtocolException(TProtocolException.SIZE_LIMIT,
"Length exceeded max allowed: " + length);
}
}
private void checkContainerReadLength(int length) throws TProtocolException {
if (length < 0) {
throw new TProtocolException(TProtocolException.NEGATIVE_SIZE,
"Negative length: " + length);
}
if (containerLengthLimit_ != NO_LENGTH_LIMIT && length > containerLengthLimit_) {
throw new TProtocolException(TProtocolException.SIZE_LIMIT,
"Length exceeded max allowed: " + length);
}
}
private int readAll(byte[] buf, int off, int len) throws TException {
return trans_.readAll(buf, off, len);
}
}
