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Tarantool client for java
package org.tarantool;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.lang.reflect.Array;
import java.math.BigInteger;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.Callable;
/**
* forked from https://bitbucket.org/sirbrialliance/msgpack-java-lite
*/
public class MsgPackLite {
public static final MsgPackLite INSTANCE = new MsgPackLite();
protected final int MAX_4BIT = 0xf;
protected final int MAX_5BIT = 0x1f;
protected final int MAX_7BIT = 0x7f;
protected final int MAX_8BIT = 0xff;
protected final int MAX_15BIT = 0x7fff;
protected final int MAX_16BIT = 0xffff;
protected final int MAX_31BIT = 0x7fffffff;
protected final long MAX_32BIT = 0xffffffffL;
protected final BigInteger BI_MIN_LONG = BigInteger.valueOf(Long.MIN_VALUE);
protected final BigInteger BI_MAX_LONG = BigInteger.valueOf(Long.MAX_VALUE);
protected final BigInteger BI_MAX_64BIT = BigInteger.valueOf(2).pow(64).subtract(BigInteger.ONE);
//these values are from http://wiki.msgpack.org/display/MSGPACK/Format+specification
protected final byte MP_NULL = (byte) 0xc0;
protected final byte MP_FALSE = (byte) 0xc2;
protected final byte MP_TRUE = (byte) 0xc3;
protected final byte MP_BIN8 = (byte) 0xc4;
protected final byte MP_BIN16 = (byte) 0xc5;
protected final byte MP_BIN32 = (byte) 0xc6;
protected final byte MP_FLOAT = (byte) 0xca;
protected final byte MP_DOUBLE = (byte) 0xcb;
protected final byte MP_FIXNUM = (byte) 0x00;//last 7 bits is value
protected final byte MP_UINT8 = (byte) 0xcc;
protected final byte MP_UINT16 = (byte) 0xcd;
protected final byte MP_UINT32 = (byte) 0xce;
protected final byte MP_UINT64 = (byte) 0xcf;
protected final byte MP_NEGATIVE_FIXNUM = (byte) 0xe0;//last 5 bits is value
protected final int MP_NEGATIVE_FIXNUM_INT = 0xe0;// /me wishes for signed numbers.
protected final byte MP_INT8 = (byte) 0xd0;
protected final byte MP_INT16 = (byte) 0xd1;
protected final byte MP_INT32 = (byte) 0xd2;
protected final byte MP_INT64 = (byte) 0xd3;
protected final byte MP_FIXARRAY = (byte) 0x90;//last 4 bits is size
protected final int MP_FIXARRAY_INT = 0x90;
protected final byte MP_ARRAY16 = (byte) 0xdc;
protected final byte MP_ARRAY32 = (byte) 0xdd;
protected final byte MP_FIXMAP = (byte) 0x80;//last 4 bits is size
protected final int MP_FIXMAP_INT = 0x80;
protected final byte MP_MAP16 = (byte) 0xde;
protected final byte MP_MAP32 = (byte) 0xdf;
protected final byte MP_FIXSTR = (byte) 0xa0;//last 5 bits is size
protected final int MP_FIXSTR_INT = 0xa0;
protected final byte MP_STR8 = (byte) 0xd9;
protected final byte MP_STR16 = (byte) 0xda;
protected final byte MP_STR32 = (byte) 0xdb;
public void pack(Object item, OutputStream os) throws IOException {
DataOutputStream out = new DataOutputStream(os);
if (item instanceof Callable) {
try {
item = ((Callable) item).call();
} catch (Exception e) {
throw new IllegalArgumentException(e);
}
}
if (item == null) {
out.write(MP_NULL);
} else if (item instanceof Boolean) {
out.write(((Boolean) item).booleanValue() ? MP_TRUE : MP_FALSE);
} else if (item instanceof Number || item instanceof Code) {
if (item instanceof Float) {
out.write(MP_FLOAT);
out.writeFloat((Float) item);
} else if (item instanceof Double) {
out.write(MP_DOUBLE);
out.writeDouble((Double) item);
} else {
if (item instanceof BigInteger) {
BigInteger value = (BigInteger) item;
boolean isPositive = value.signum() >= 0;
if (isPositive && value.compareTo(BI_MAX_64BIT) > 0 ||
value.compareTo(BI_MIN_LONG) < 0)
throw new IllegalArgumentException(
"Cannot encode BigInteger as MsgPack: out of -2^63..2^64-1 range");
if (isPositive && value.compareTo(BI_MAX_LONG) > 0) {
byte[] data = value.toByteArray();
// data can contain leading zero bytes
for (int i = 0; i < data.length - 8; ++i)
assert data[i] == 0;
out.write(MP_UINT64);
out.write(data, data.length - 8, 8);
return;
}
}
long value = item instanceof Code ? ((Code) item).getId() : ((Number) item).longValue();
if (value >= 0) {
if (value <= MAX_7BIT) {
out.write((int) value | MP_FIXNUM);
} else if (value <= MAX_8BIT) {
out.write(MP_UINT8);
out.write((int) value);
} else if (value <= MAX_16BIT) {
out.write(MP_UINT16);
out.writeShort((int) value);
} else if (value <= MAX_32BIT) {
out.write(MP_UINT32);
out.writeInt((int) value);
} else {
out.write(MP_UINT64);
out.writeLong(value);
}
} else {
if (value >= -(MAX_5BIT + 1)) {
out.write((int) (value & 0xff));
} else if (value >= -(MAX_7BIT + 1)) {
out.write(MP_INT8);
out.write((int) value);
} else if (value >= -(MAX_15BIT + 1)) {
out.write(MP_INT16);
out.writeShort((int) value);
} else if (value >= -(MAX_31BIT + 1)) {
out.write(MP_INT32);
out.writeInt((int) value);
} else {
out.write(MP_INT64);
out.writeLong(value);
}
}
}
} else if (item instanceof String) {
byte[] data = ((String) item).getBytes("UTF-8");
if (data.length <= MAX_5BIT) {
out.write(data.length | MP_FIXSTR);
} else if (data.length <= MAX_8BIT) {
out.write(MP_STR8);
out.writeByte(data.length);
} else if (data.length <= MAX_16BIT) {
out.write(MP_STR16);
out.writeShort(data.length);
} else {
out.write(MP_STR32);
out.writeInt(data.length);
}
out.write(data);
} else if (item instanceof byte[] || item instanceof ByteBuffer) {
byte[] data;
if (item instanceof byte[]) {
data = (byte[]) item;
} else {
ByteBuffer bb = ((ByteBuffer) item);
if (bb.hasArray()) {
data = bb.array();
} else {
data = new byte[bb.capacity()];
bb.position();
bb.limit(bb.capacity());
bb.get(data);
}
}
if (data.length <= MAX_8BIT) {
out.write(MP_BIN8);
out.writeByte(data.length);
} else if (data.length <= MAX_16BIT) {
out.write(MP_BIN16);
out.writeShort(data.length);
} else {
out.write(MP_BIN32);
out.writeInt(data.length);
}
out.write(data);
} else if (item instanceof List || item.getClass().isArray()) {
int length = item instanceof List ? ((List) item).size() : Array.getLength(item);
if (length <= MAX_4BIT) {
out.write(length | MP_FIXARRAY);
} else if (length <= MAX_16BIT) {
out.write(MP_ARRAY16);
out.writeShort(length);
} else {
out.write(MP_ARRAY32);
out.writeInt(length);
}
if (item instanceof List) {
List list = ((List) item);
for (Object element : list) {
pack(element, out);
}
} else {
for (int i = 0; i < length; i++) {
pack(Array.get(item, i), out);
}
}
} else if (item instanceof Map) {
Map map = (Map) item;
if (map.size() <= MAX_4BIT) {
out.write(map.size() | MP_FIXMAP);
} else if (map.size() <= MAX_16BIT) {
out.write(MP_MAP16);
out.writeShort(map.size());
} else {
out.write(MP_MAP32);
out.writeInt(map.size());
}
for (Map.Entry kvp : map.entrySet()) {
pack(kvp.getKey(), out);
pack(kvp.getValue(), out);
}
} else {
throw new IllegalArgumentException("Cannot msgpack object of type " + item.getClass().getCanonicalName());
}
}
public Object unpack(InputStream is) throws IOException {
DataInputStream in = new DataInputStream(is);
int value = in.read();
if (value < 0) {
throw new IllegalArgumentException("No more input available when expecting a value");
}
switch ((byte) value) {
case MP_NULL:
return null;
case MP_FALSE:
return false;
case MP_TRUE:
return true;
case MP_FLOAT:
return in.readFloat();
case MP_DOUBLE:
return in.readDouble();
case MP_UINT8:
return in.read();//read single byte, return as int
case MP_UINT16:
return in.readShort() & MAX_16BIT;//read short, trick Java into treating it as unsigned, return int
case MP_UINT32:
return in.readInt() & MAX_32BIT;//read int, trick Java into treating it as unsigned, return long
case MP_UINT64: {
long v = in.readLong();
if (v >= 0) {
return v;
} else {
//this is a little bit more tricky, since we don't have unsigned longs
byte[] bytes = new byte[]{
(byte) ((v >> 56) & 0xff),
(byte) ((v >> 48) & 0xff),
(byte) ((v >> 40) & 0xff),
(byte) ((v >> 32) & 0xff),
(byte) ((v >> 24) & 0xff),
(byte) ((v >> 16) & 0xff),
(byte) ((v >> 8) & 0xff),
(byte) (v & 0xff),
};
return new BigInteger(1, bytes);
}
}
case MP_INT8:
return (byte) in.read();
case MP_INT16:
return in.readShort();
case MP_INT32:
return in.readInt();
case MP_INT64:
return in.readLong();
case MP_ARRAY16:
return unpackList(in.readShort() & MAX_16BIT, in);
case MP_ARRAY32:
return unpackList(in.readInt(), in);
case MP_MAP16:
return unpackMap(in.readShort() & MAX_16BIT, in);
case MP_MAP32:
return unpackMap(in.readInt(), in);
case MP_STR8:
return unpackStr(in.readByte() & MAX_8BIT, in);
case MP_STR16:
return unpackStr(in.readShort() & MAX_16BIT, in);
case MP_STR32:
return unpackStr(in.readInt(), in);
case MP_BIN8:
return unpackBin(in.readByte() & MAX_8BIT, in);
case MP_BIN16:
return unpackBin(in.readShort() & MAX_16BIT, in);
case MP_BIN32:
return unpackBin(in.readInt(), in);
}
if (value >= MP_NEGATIVE_FIXNUM_INT && value <= MP_NEGATIVE_FIXNUM_INT + MAX_5BIT) {
return (byte) value;
} else if (value >= MP_FIXARRAY_INT && value <= MP_FIXARRAY_INT + MAX_4BIT) {
return unpackList(value - MP_FIXARRAY_INT, in);
} else if (value >= MP_FIXMAP_INT && value <= MP_FIXMAP_INT + MAX_4BIT) {
return unpackMap(value - MP_FIXMAP_INT, in);
} else if (value >= MP_FIXSTR_INT && value <= MP_FIXSTR_INT + MAX_5BIT) {
return unpackStr(value - MP_FIXSTR_INT, in);
} else if (value <= MAX_7BIT) {//MP_FIXNUM - the value is value as an int
return value;
} else {
throw new IllegalArgumentException("Input contains invalid type value " + (byte) value);
}
}
protected List unpackList(int size, DataInputStream in) throws IOException {
if (size < 0) {
throw new IllegalArgumentException("Array to unpack too large for Java (more than 2^31 elements)!");
}
List ret = new ArrayList(size);
for (int i = 0; i < size; ++i) {
ret.add(unpack(in));
}
return ret;
}
protected Map unpackMap(int size, DataInputStream in) throws IOException {
if (size < 0) {
throw new IllegalArgumentException("Map to unpack too large for Java (more than 2^31 elements)!");
}
Map ret = new HashMap(size);
for (int i = 0; i < size; ++i) {
Object key = unpack(in);
Object value = unpack(in);
ret.put(key, value);
}
return ret;
}
protected Object unpackStr(int size, DataInputStream in) throws IOException {
if (size < 0) {
throw new IllegalArgumentException("byte[] to unpack too large for Java (more than 2^31 elements)!");
}
byte[] data = new byte[size];
in.readFully(data);
return new String(data, "UTF-8");
}
protected Object unpackBin(int size, DataInputStream in) throws IOException {
if (size < 0) {
throw new IllegalArgumentException("byte[] to unpack too large for Java (more than 2^31 elements)!");
}
byte[] data = new byte[size];
in.readFully(data);
return data;
}
}