/* * (C) 2007-2012 Alibaba Group Holding Limited. * * Licensed 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. * Authors: * wuhua <wq163@163.com> , boyan <killme2008@gmail.com> */ package com.taobao.metamorphosis.network; import com.taobao.gecko.core.buffer.IoBuffer; /** * ��ȡ��ϢЭ�飬Э���ʽ���£� get topic group partition offset maxSize opaque\r\n * * @author boyan * @Date 2011-4-19 * */ public class GetCommand extends AbstractRequestCommand { private final long offset; private final int maxSize; private final int partition; private final String group; static final long serialVersionUID = -1L; public GetCommand(final String topic, final String group, final int partition, final long offset, final int maxSize, final Integer opaque) { super(topic, opaque); this.group = group; this.partition = partition; this.offset = offset; this.maxSize = maxSize; } public String getGroup() { return this.group; } public long getOffset() { return this.offset; } public int getMaxSize() { return this.maxSize; } public int getPartition() { return this.partition; } @Override public String toString() { return MetaEncodeCommand.GET_CMD + " " + this.getTopic() + " " + this.getGroup() + " " + this.partition + " " + this.offset + " " + this.getMaxSize() + " " + this.getOpaque() + "\r\n"; } @Override public IoBuffer encode() { final IoBuffer buffer = IoBuffer.allocate(11 + this.getGroup().length() + ByteUtils.stringSize(this.partition) + ByteUtils.stringSize(this.getOpaque()) + this.getTopic().length() + ByteUtils.stringSize(this.offset) + ByteUtils.stringSize(this.maxSize)); ByteUtils.setArguments(buffer, MetaEncodeCommand.GET_CMD, this.getTopic(), this.getGroup(), this.partition, this.offset, this.maxSize, this.getOpaque()); buffer.flip(); return buffer; } @Override public int hashCode() { final int prime = 31; int result = super.hashCode(); result = prime * result + (this.group == null ? 0 : this.group.hashCode()); result = prime * result + this.maxSize; result = prime * result + (int) (this.offset ^ this.offset >>> 32); result = prime * result + this.partition; return result; } @Override public boolean equals(final Object obj) { if (this == obj) { return true; } if (!super.equals(obj)) { return false; } if (this.getClass() != obj.getClass()) { return false; } final GetCommand other = (GetCommand) obj; if (this.group == null) { if (other.group != null) { return false; } } else if (!this.group.equals(other.group)) { return false; } if (this.maxSize != other.maxSize) { return false; } if (this.offset != other.offset) { return false; } if (this.partition != other.partition) { return false; } return true; } }