| /* |
| * 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.ignite.internal.processors.odbc; |
| |
| import java.io.Externalizable; |
| import java.io.IOException; |
| import java.io.ObjectInput; |
| import java.io.ObjectOutput; |
| import java.nio.ByteBuffer; |
| import org.apache.ignite.internal.IgniteCodeGeneratingFail; |
| import org.apache.ignite.internal.binary.streams.BinaryHeapOutputStream; |
| import org.apache.ignite.internal.util.typedef.internal.U; |
| import org.apache.ignite.plugin.extensions.communication.Message; |
| import org.apache.ignite.plugin.extensions.communication.MessageReader; |
| import org.apache.ignite.plugin.extensions.communication.MessageWriter; |
| |
| @IgniteCodeGeneratingFail |
| public class ClientMessage implements Message, Externalizable { |
| /** */ |
| private static final long serialVersionUID = -4609408156037304495L; |
| |
| /** */ |
| private byte[] data; |
| |
| /** */ |
| private BinaryHeapOutputStream stream; |
| |
| /** */ |
| private int cnt = -4; |
| |
| /** */ |
| private int msgSize; |
| |
| /** */ |
| public ClientMessage() {} |
| |
| /** */ |
| public ClientMessage(byte[] data) { |
| this.data = data; |
| } |
| |
| /** */ |
| public ClientMessage(BinaryHeapOutputStream stream) { |
| this.stream = stream; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public boolean writeTo(ByteBuffer buf, MessageWriter ignored) { |
| assert stream != null || data != null; |
| |
| byte[] data = stream != null ? stream.array() : this.data; |
| int msgSize = stream != null ? stream.position() : data.length; |
| |
| if (cnt < 0) { |
| for (; cnt < 0 && buf.hasRemaining(); cnt++) |
| buf.put((byte) ((msgSize >> (8 * (4 + cnt))) & 0xFF)); |
| |
| if (cnt < 0) |
| return false; |
| } |
| |
| assert cnt >= 0; |
| assert msgSize > 0; |
| |
| int remaining = buf.remaining(); |
| |
| if (remaining > 0) { |
| int missing = msgSize - cnt; |
| |
| if (missing > 0) { |
| int len = Math.min(missing, remaining); |
| |
| buf.put(data, cnt, len); |
| |
| cnt += len; |
| } |
| } |
| |
| if (cnt == msgSize) { |
| cnt = -4; |
| |
| if (stream != null) { |
| U.closeQuiet(stream); |
| |
| stream = null; |
| } |
| |
| return true; |
| } |
| |
| return false; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public boolean readFrom(ByteBuffer buf, MessageReader reader) { |
| if (cnt < 0) { |
| for (; cnt < 0 && buf.hasRemaining(); cnt++) |
| msgSize |= (buf.get() & 0xFF) << (8 * (4 + cnt)); |
| |
| if (cnt < 0) |
| return false; |
| |
| data = new byte[msgSize]; |
| } |
| |
| assert data != null; |
| assert cnt >= 0; |
| assert msgSize > 0; |
| |
| int remaining = buf.remaining(); |
| |
| if (remaining > 0) { |
| int missing = msgSize - cnt; |
| |
| if (missing > 0) { |
| int len = Math.min(missing, remaining); |
| |
| buf.get(data, cnt, len); |
| |
| cnt += len; |
| } |
| } |
| |
| if (cnt == msgSize) { |
| cnt = -4; |
| msgSize = 0; |
| |
| return true; |
| } |
| |
| return false; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public short directType() { |
| return Short.MIN_VALUE; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public byte fieldsCount() { |
| return 1; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public void onAckReceived() { |
| // No-op |
| } |
| |
| /** |
| * @return Message payload. |
| */ |
| public byte[] payload() { |
| if (stream != null) { |
| data = stream.arrayCopy(); |
| U.closeQuiet(stream); |
| stream = null; |
| } |
| |
| return data; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public void writeExternal(ObjectOutput out) throws IOException { |
| byte[] data = payload(); |
| out.writeInt(data.length); |
| out.write(data); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException { |
| data = new byte[in.readInt()]; |
| in.read(data, 0, data.length); |
| } |
| } |