/*
* Copyright 1999-2012 Alibaba Group.
*
* 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.
*/
package com.alibaba.cobar.manager.response;
import java.nio.ByteBuffer;
import com.alibaba.cobar.CobarServer;
import com.alibaba.cobar.config.Fields;
import com.alibaba.cobar.heartbeat.CobarDetector;
import com.alibaba.cobar.heartbeat.CobarHeartbeat;
import com.alibaba.cobar.heartbeat.MySQLDetector;
import com.alibaba.cobar.heartbeat.MySQLHeartbeat;
import com.alibaba.cobar.manager.ManagerConnection;
import com.alibaba.cobar.mysql.PacketUtil;
import com.alibaba.cobar.net.BackendConnection;
import com.alibaba.cobar.net.NIOProcessor;
import com.alibaba.cobar.net.mysql.EOFPacket;
import com.alibaba.cobar.net.mysql.FieldPacket;
import com.alibaba.cobar.net.mysql.ResultSetHeaderPacket;
import com.alibaba.cobar.net.mysql.RowDataPacket;
import com.alibaba.cobar.util.IntegerUtil;
import com.alibaba.cobar.util.LongUtil;
import com.alibaba.cobar.util.StringUtil;
import com.alibaba.cobar.util.TimeUtil;
/**
* 查询后端连接
*
* @author xianmao.hexm 2012-5-10
*/
public class ShowBackend {
private static final int FIELD_COUNT = 14;
private static final ResultSetHeaderPacket header = PacketUtil.getHeader(FIELD_COUNT);
private static final FieldPacket[] fields = new FieldPacket[FIELD_COUNT];
private static final EOFPacket eof = new EOFPacket();
static {
int i = 0;
byte packetId = 0;
header.packetId = ++packetId;
fields[i] = PacketUtil.getField("processor", Fields.FIELD_TYPE_VAR_STRING);
fields[i++].packetId = ++packetId;
fields[i] = PacketUtil.getField("id", Fields.FIELD_TYPE_LONG);
fields[i++].packetId = ++packetId;
fields[i] = PacketUtil.getField("host", Fields.FIELD_TYPE_VAR_STRING);
fields[i++].packetId = ++packetId;
fields[i] = PacketUtil.getField("port", Fields.FIELD_TYPE_LONG);
fields[i++].packetId = ++packetId;
fields[i] = PacketUtil.getField("l_port", Fields.FIELD_TYPE_LONG);
fields[i++].packetId = ++packetId;
fields[i] = PacketUtil.getField("net_in", Fields.FIELD_TYPE_LONGLONG);
fields[i++].packetId = ++packetId;
fields[i] = PacketUtil.getField("net_out", Fields.FIELD_TYPE_LONGLONG);
fields[i++].packetId = ++packetId;
fields[i] = PacketUtil.getField("life", Fields.FIELD_TYPE_LONGLONG);
fields[i++].packetId = ++packetId;
fields[i] = PacketUtil.getField("closed", Fields.FIELD_TYPE_VAR_STRING);
fields[i++].packetId = ++packetId;
fields[i] = PacketUtil.getField("auth", Fields.FIELD_TYPE_VAR_STRING);
fields[i++].packetId = ++packetId;
fields[i] = PacketUtil.getField("quit", Fields.FIELD_TYPE_VAR_STRING);
fields[i++].packetId = ++packetId;
fields[i] = PacketUtil.getField("checking", Fields.FIELD_TYPE_VAR_STRING);
fields[i++].packetId = ++packetId;
fields[i] = PacketUtil.getField("stop", Fields.FIELD_TYPE_VAR_STRING);
fields[i++].packetId = ++packetId;
fields[i] = PacketUtil.getField("status", Fields.FIELD_TYPE_LONGLONG);
fields[i++].packetId = ++packetId;
eof.packetId = ++packetId;
}
public static void execute(ManagerConnection c) {
ByteBuffer buffer = c.allocate();
buffer = header.write(buffer, c);
for (FieldPacket field : fields) {
buffer = field.write(buffer, c);
}
buffer = eof.write(buffer, c);
byte packetId = eof.packetId;
String charset = c.getCharset();
for (NIOProcessor p : CobarServer.getInstance().getProcessors()) {
for (BackendConnection bc : p.getBackends().values()) {
if (bc != null) {
RowDataPacket row = getRow(bc, charset);
row.packetId = ++packetId;
buffer = row.write(buffer, c);
}
}
}
EOFPacket lastEof = new EOFPacket();
lastEof.packetId = ++packetId;
buffer = lastEof.write(buffer, c);
c.write(buffer);
}
private static RowDataPacket getRow(BackendConnection c, String charset) {
RowDataPacket row = new RowDataPacket(FIELD_COUNT);
row.add(c.getProcessor().getName().getBytes());
row.add(LongUtil.toBytes(c.getId()));
row.add(StringUtil.encode(c.getHost(), charset));
row.add(IntegerUtil.toBytes(c.getPort()));
row.add(IntegerUtil.toBytes(c.getLocalPort()));
row.add(LongUtil.toBytes(c.getNetInBytes()));
row.add(LongUtil.toBytes(c.getNetOutBytes()));
row.add(LongUtil.toBytes((TimeUtil.currentTimeMillis() - c.getStartupTime()) / 1000L));
row.add(c.isClosed() ? "true".getBytes() : "false".getBytes());
if (c instanceof CobarDetector) {
CobarDetector detector = (CobarDetector) c;
CobarHeartbeat heartbeat = detector.getHeartbeat();
row.add(detector.isAuthenticated() ? "true".getBytes() : "false".getBytes());
row.add(detector.isQuit() ? "true".getBytes() : "false".getBytes());
row.add(heartbeat.isChecking() ? "true".getBytes() : "false".getBytes());
row.add(heartbeat.isStop() ? "true".getBytes() : "false".getBytes());
row.add(LongUtil.toBytes(heartbeat.getStatus()));
} else if (c instanceof MySQLDetector) {
MySQLDetector detector = (MySQLDetector) c;
MySQLHeartbeat heartbeat = detector.getHeartbeat();
row.add(detector.isAuthenticated() ? "true".getBytes() : "false".getBytes());
row.add(detector.isQuit() ? "true".getBytes() : "false".getBytes());
row.add(heartbeat.isChecking() ? "true".getBytes() : "false".getBytes());
row.add(heartbeat.isStop() ? "true".getBytes() : "false".getBytes());
row.add(LongUtil.toBytes(heartbeat.getStatus()));
} else {
row.add(null);
row.add(null);
row.add(null);
row.add(null);
row.add(null);
}
return row;
}
}