/*
* Copyright (c) 2013, OpenCloudDB/MyCAT and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software;Designed and Developed mainly by many Chinese
* opensource volunteers. you can redistribute it and/or modify it under the
* terms of the GNU General Public License version 2 only, as published by the
* Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Any questions about this component can be directed to it's project Web address
* https://code.google.com/p/opencloudb/.
*
*/
package org.opencloudb.response;
import java.nio.ByteBuffer;
import org.opencloudb.MycatServer;
import org.opencloudb.buffer.BufferQueue;
import org.opencloudb.config.Fields;
import org.opencloudb.manager.ManagerConnection;
import org.opencloudb.mysql.PacketUtil;
import org.opencloudb.mysql.nio.MySQLConnection;
import org.opencloudb.net.FrontendConnection;
import org.opencloudb.net.NIOProcessor;
import org.opencloudb.net.mysql.EOFPacket;
import org.opencloudb.net.mysql.FieldPacket;
import org.opencloudb.net.mysql.ResultSetHeaderPacket;
import org.opencloudb.net.mysql.RowDataPacket;
import org.opencloudb.server.ServerConnection;
import org.opencloudb.util.IntegerUtil;
import org.opencloudb.util.LongUtil;
import org.opencloudb.util.StringUtil;
import org.opencloudb.util.TimeUtil;
/**
* 查看当前有效连接信息
*
* @author mycat
* @author mycat
*/
public final class ShowConnection {
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("LOCAL_PORT", Fields.FIELD_TYPE_LONG);
fields[i++].packetId = ++packetId;
fields[i] = PacketUtil.getField("SCHEMA", Fields.FIELD_TYPE_VAR_STRING);
fields[i++].packetId = ++packetId;
fields[i] = PacketUtil
.getField("CHARSET", Fields.FIELD_TYPE_VAR_STRING);
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("ALIVE_TIME(S)",
Fields.FIELD_TYPE_LONGLONG);
fields[i++].packetId = ++packetId;
fields[i] = PacketUtil.getField("RECV_BUFFER", Fields.FIELD_TYPE_LONG);
fields[i++].packetId = ++packetId;
fields[i] = PacketUtil.getField("SEND_QUEUE", Fields.FIELD_TYPE_LONG);
fields[i++].packetId = ++packetId;
fields[i] = PacketUtil
.getField("txlevel", Fields.FIELD_TYPE_VAR_STRING);
fields[i++].packetId = ++packetId;
fields[i] = PacketUtil.getField("autocommit",
Fields.FIELD_TYPE_VAR_STRING);
fields[i++].packetId = ++packetId;
eof.packetId = ++packetId;
}
public static void execute(ManagerConnection c) {
ByteBuffer buffer = c.allocate();
// write header
buffer = header.write(buffer, c, true);
// write fields
for (FieldPacket field : fields) {
buffer = field.write(buffer, c, true);
}
// write eof
buffer = eof.write(buffer, c, true);
// write rows
byte packetId = eof.packetId;
String charset = c.getCharset();
NIOProcessor[] processors = MycatServer.getInstance().getProcessors();
for (NIOProcessor p : processors) {
for (FrontendConnection fc : p.getFrontends().values()) {
if (fc != null) {
RowDataPacket row = getRow(fc, charset);
row.packetId = ++packetId;
buffer = row.write(buffer, c, true);
}
}
}
// write last eof
EOFPacket lastEof = new EOFPacket();
lastEof.packetId = ++packetId;
buffer = lastEof.write(buffer, c, true);
// write buffer
c.write(buffer);
}
private static RowDataPacket getRow(FrontendConnection 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(StringUtil.encode(c.getSchema(), charset));
row.add(StringUtil.encode(c.getCharset(), charset));
row.add(LongUtil.toBytes(c.getNetInBytes()));
row.add(LongUtil.toBytes(c.getNetOutBytes()));
row.add(LongUtil.toBytes((TimeUtil.currentTimeMillis() - c
.getStartupTime()) / 1000L));
ByteBuffer bb = c.getReadBuffer();
row.add(IntegerUtil.toBytes(bb == null ? 0 : bb.capacity()));
BufferQueue bq = c.getWriteQueue();
row.add(IntegerUtil.toBytes(bq == null ? 0 : bq.snapshotSize()));
String txLevel = "";
String txAutommit = "";
if (c instanceof ServerConnection) {
ServerConnection mysqlC = (ServerConnection) c;
bq = mysqlC.getWriteQueue();
txLevel = mysqlC.getTxIsolation() + "";
txAutommit = mysqlC.isAutocommit() + "";
}
row.add(txLevel.getBytes());
row.add(txAutommit.getBytes());
return row;
}
}