/*
* 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 io.mycat.server.response;
import io.mycat.MycatServer;
import io.mycat.backend.PhysicalDBNode;
import io.mycat.backend.PhysicalDBPool;
import io.mycat.backend.PhysicalDatasource;
import io.mycat.net.BufferArray;
import io.mycat.net.NetSystem;
import io.mycat.server.Fields;
import io.mycat.server.MySQLFrontConnection;
import io.mycat.server.config.node.MycatConfig;
import io.mycat.server.config.node.SchemaConfig;
import io.mycat.server.packet.EOFPacket;
import io.mycat.server.packet.FieldPacket;
import io.mycat.server.packet.ResultSetHeaderPacket;
import io.mycat.server.packet.RowDataPacket;
import io.mycat.server.packet.util.PacketUtil;
import io.mycat.util.IntegerUtil;
import io.mycat.util.LongUtil;
import io.mycat.util.Pair;
import io.mycat.util.PairUtil;
import io.mycat.util.StringUtil;
import io.mycat.util.TimeUtil;
import java.text.DecimalFormat;
import java.text.NumberFormat;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import java.util.Map;
/**
* 查看数据节点信息
*
* @author mycat
* @author mycat
*/
public final class ShowDataNode {
private static final NumberFormat nf = DecimalFormat.getInstance();
private static final int FIELD_COUNT = 12;
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 {
nf.setMaximumFractionDigits(3);
int i = 0;
byte packetId = 0;
header.packetId = ++packetId;
fields[i] = PacketUtil.getField("NAME", Fields.FIELD_TYPE_VAR_STRING);
fields[i++].packetId = ++packetId;
fields[i] = PacketUtil
.getField("DATHOST", Fields.FIELD_TYPE_VAR_STRING);
fields[i++].packetId = ++packetId;
fields[i] = PacketUtil.getField("INDEX", Fields.FIELD_TYPE_LONG);
fields[i++].packetId = ++packetId;
fields[i] = PacketUtil.getField("TYPE", Fields.FIELD_TYPE_VAR_STRING);
fields[i++].packetId = ++packetId;
fields[i] = PacketUtil.getField("ACTIVE", Fields.FIELD_TYPE_LONG);
fields[i++].packetId = ++packetId;
fields[i] = PacketUtil.getField("IDLE", Fields.FIELD_TYPE_LONG);
fields[i++].packetId = ++packetId;
fields[i] = PacketUtil.getField("SIZE", Fields.FIELD_TYPE_LONG);
fields[i++].packetId = ++packetId;
fields[i] = PacketUtil.getField("EXECUTE", Fields.FIELD_TYPE_LONGLONG);
fields[i++].packetId = ++packetId;
fields[i] = PacketUtil.getField("TOTAL_TIME", Fields.FIELD_TYPE_DOUBLE);
fields[i++].packetId = ++packetId;
fields[i] = PacketUtil.getField("MAX_TIME", Fields.FIELD_TYPE_DOUBLE);
fields[i++].packetId = ++packetId;
fields[i] = PacketUtil.getField("MAX_SQL", Fields.FIELD_TYPE_LONGLONG);
fields[i++].packetId = ++packetId;
fields[i] = PacketUtil.getField("RECOVERY_TIME",
Fields.FIELD_TYPE_LONGLONG);
fields[i++].packetId = ++packetId;
eof.packetId = ++packetId;
}
public static void execute(MySQLFrontConnection c,String name) {
BufferArray bufferArray = NetSystem.getInstance().getBufferPool()
.allocateArray();
// write header
header.write(bufferArray);
// write fields
for (FieldPacket field : fields) {
field.write(bufferArray);
}
// write eof
eof.write(bufferArray);
// write rows
byte packetId = eof.packetId;
MycatConfig conf = MycatServer.getInstance().getConfig();
Map<String, PhysicalDBNode> dataNodes = conf.getDataNodes();
List<String> keys = new ArrayList<String>();
if (StringUtil.isEmpty(name)) {
keys.addAll(dataNodes.keySet());
} else {
SchemaConfig sc = conf.getSchemas().get(name);
if (null != sc) {
keys.addAll(sc.getAllDataNodes());
}
}
Collections.sort(keys, new Comparators<String>());
for (String key : keys) {
RowDataPacket row = getRow(dataNodes.get(key), c.getCharset());
row.packetId = ++packetId;
row.write(bufferArray);
}
// write last eof
EOFPacket lastEof = new EOFPacket();
lastEof.packetId = ++packetId;
lastEof.write(bufferArray);
// post write
c.write(bufferArray);
}
private static RowDataPacket getRow(PhysicalDBNode node, String charset) {
RowDataPacket row = new RowDataPacket(FIELD_COUNT);
row.add(StringUtil.encode(node.getName(), charset));
row.add(StringUtil.encode(
node.getDbPool().getHostName() + '/' + node.getDatabase(),
charset));
PhysicalDBPool pool = node.getDbPool();
PhysicalDatasource ds = pool.getSource();
if (ds != null) {
int active = ds.getActiveCountForSchema(node.getDatabase());
int idle = ds.getIdleCountForSchema(node.getDatabase());
row.add(IntegerUtil.toBytes(pool.getActivedIndex()));
row.add(StringUtil.encode(ds.getConfig().getDbType(), charset));
row.add(IntegerUtil.toBytes(active));
row.add(IntegerUtil.toBytes(idle));
row.add(IntegerUtil.toBytes(ds.getSize()));
} else {
row.add(null);
row.add(null);
row.add(null);
row.add(null);
row.add(null);
}
row.add(LongUtil.toBytes(ds.getExecuteCountForSchema(node.getDatabase())));
row.add(StringUtil.encode(nf.format(0), charset));
row.add(StringUtil.encode(nf.format(0), charset));
row.add(LongUtil.toBytes(0));
long recoveryTime = pool.getSource().getHeartbeatRecoveryTime()
- TimeUtil.currentTimeMillis();
row.add(LongUtil.toBytes(recoveryTime > 0 ? recoveryTime / 1000L : -1L));
return row;
}
private static final class Comparators<T> implements Comparator<String> {
@Override
public int compare(String s1, String s2) {
Pair<String, Integer> p1 = PairUtil.splitIndex(s1, '[', ']');
Pair<String, Integer> p2 = PairUtil.splitIndex(s2, '[', ']');
if (p1.getKey().compareTo(p2.getKey()) == 0) {
return p1.getValue() - p2.getValue();
} else {
return p1.getKey().compareTo(p2.getKey());
}
}
}
}