/**
* Parses custom packet serialized by hessian marshaller.
*
* @param ses Session.
* @param buf Buffer containing not parsed bytes.
* @param state Parser state.
* @return Parsed message.
* @throws IOException If packet parsing or deserialization failed.
*/
@Nullable
private GridClientMessage parseCustomPacket(GridNioSession ses, ByteBuffer buf, ParserState state)
throws IOException {
assert state.packetType() == PacketType.GRIDGAIN;
assert state.packet() == null;
ByteArrayOutputStream tmp = state.buffer();
int len = state.index();
while (buf.remaining() > 0) {
byte b = buf.get();
if (len == 0) {
tmp.write(b);
if (tmp.size() == 4) {
len = U.bytesToInt(tmp.toByteArray(), 0);
tmp.reset();
if (len == 0) return PING_MESSAGE;
else if (len < 0)
throw new IOException(
"Failed to parse incoming packet (invalid packet length) [ses="
+ ses
+ ", len="
+ len
+ ']');
state.index(len);
}
} else {
tmp.write(b);
if (tmp.size() == len) return marshaller.unmarshal(tmp.toByteArray());
}
}
return null;
}
/**
* Encodes given object to a byte array and returns flags that describe the type of serialized
* object.
*
* @param obj Object to serialize.
* @param out Output stream to which object should be written.
* @return Serialization flags.
* @throws GridException If JDK serialization failed.
*/
private int encodeObj(Object obj, ByteArrayOutputStream out) throws GridException {
int flags = 0;
byte[] data = null;
if (obj instanceof String) {
data = ((String) obj).getBytes();
} else if (obj instanceof Boolean) {
data = new byte[] {(byte) ((Boolean) obj ? '1' : '0')};
flags |= BOOLEAN_FLAG;
} else if (obj instanceof Integer) {
data = U.intToBytes((Integer) obj);
flags |= INT_FLAG;
} else if (obj instanceof Long) {
data = U.longToBytes((Long) obj);
flags |= LONG_FLAG;
} else if (obj instanceof Date) {
data = U.longToBytes(((Date) obj).getTime());
flags |= DATE_FLAG;
} else if (obj instanceof Byte) {
data = new byte[] {(Byte) obj};
flags |= BYTE_FLAG;
} else if (obj instanceof Float) {
data = U.intToBytes(Float.floatToIntBits((Float) obj));
flags |= FLOAT_FLAG;
} else if (obj instanceof Double) {
data = U.longToBytes(Double.doubleToLongBits((Double) obj));
flags |= DOUBLE_FLAG;
} else if (obj instanceof byte[]) {
data = (byte[]) obj;
flags |= BYTE_ARR_FLAG;
} else {
jdkMarshaller.marshal(obj, out);
flags |= SERIALIZED_FLAG;
}
if (data != null) out.write(data, 0, data.length);
return flags;
}
/**
* Parses memcache protocol message.
*
* @param ses Session.
* @param buf Buffer containing not parsed bytes.
* @param state Current parser state.
* @return Parsed packet.s
* @throws IOException If packet cannot be parsed.
* @throws GridException If deserialization error occurred.
*/
@Nullable
private GridClientMessage parseMemcachePacket(
GridNioSession ses, ByteBuffer buf, ParserState state) throws IOException, GridException {
assert state.packetType() == PacketType.MEMCACHE;
assert state.packet() != null;
assert state.packet() instanceof GridTcpRestPacket;
GridTcpRestPacket req = (GridTcpRestPacket) state.packet();
ByteArrayOutputStream tmp = state.buffer();
int i = state.index();
while (buf.remaining() > 0) {
byte b = buf.get();
if (i == 0) req.requestFlag(b);
else if (i == 1) req.operationCode(b);
else if (i == 2 || i == 3) {
tmp.write(b);
if (i == 3) {
req.keyLength(U.bytesToShort(tmp.toByteArray(), 0));
tmp.reset();
}
} else if (i == 4) req.extrasLength(b);
else if (i >= 8 && i <= 11) {
tmp.write(b);
if (i == 11) {
req.totalLength(U.bytesToInt(tmp.toByteArray(), 0));
tmp.reset();
}
} else if (i >= 12 && i <= 15) {
tmp.write(b);
if (i == 15) {
req.opaque(tmp.toByteArray());
tmp.reset();
}
} else if (i >= HDR_LEN && i < HDR_LEN + req.extrasLength()) {
tmp.write(b);
if (i == HDR_LEN + req.extrasLength() - 1) {
req.extras(tmp.toByteArray());
tmp.reset();
}
} else if (i >= HDR_LEN + req.extrasLength()
&& i < HDR_LEN + req.extrasLength() + req.keyLength()) {
tmp.write(b);
if (i == HDR_LEN + req.extrasLength() + req.keyLength() - 1) {
req.key(tmp.toByteArray());
tmp.reset();
}
} else if (i >= HDR_LEN + req.extrasLength() + req.keyLength()
&& i < HDR_LEN + req.totalLength()) {
tmp.write(b);
if (i == HDR_LEN + req.totalLength() - 1) {
req.value(tmp.toByteArray());
tmp.reset();
}
}
if (i == HDR_LEN + req.totalLength() - 1)
// Assembled the packet.
return assemble(ses, req);
i++;
}
state.index(i);
return null;
}
