/*
* 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 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;
import com.alibaba.cobar.CobarConfig;
import com.alibaba.cobar.CobarServer;
import com.alibaba.cobar.config.Fields;
import com.alibaba.cobar.config.model.SchemaConfig;
import com.alibaba.cobar.manager.ManagerConnection;
import com.alibaba.cobar.mysql.MySQLDataNode;
import com.alibaba.cobar.mysql.MySQLDataSource;
import com.alibaba.cobar.mysql.PacketUtil;
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.parser.util.Pair;
import com.alibaba.cobar.parser.util.PairUtil;
import com.alibaba.cobar.util.IntegerUtil;
import com.alibaba.cobar.util.LongUtil;
import com.alibaba.cobar.util.StringUtil;
import com.alibaba.cobar.util.TimeUtil;
/**
* 查看数据节点信息
*
* @author wenfeng.cenwf 2011-4-28
* @author xianmao.hexm
*/
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("DATASOURCES", 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(ManagerConnection c, String name) {
ByteBuffer buffer = c.allocate();
// write header
buffer = header.write(buffer, c);
// write fields
for (FieldPacket field : fields) {
buffer = field.write(buffer, c);
}
// write eof
buffer = eof.write(buffer, c);
// write rows
byte packetId = eof.packetId;
CobarConfig conf = CobarServer.getInstance().getConfig();
Map<String, MySQLDataNode> 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;
buffer = row.write(buffer, c);
}
// write last eof
EOFPacket lastEof = new EOFPacket();
lastEof.packetId = ++packetId;
buffer = lastEof.write(buffer, c);
// post write
c.write(buffer);
}
private static RowDataPacket getRow(MySQLDataNode node, String charset) {
RowDataPacket row = new RowDataPacket(FIELD_COUNT);
row.add(StringUtil.encode(node.getName(), charset));
row.add(StringUtil.encode(node.getConfig().getDataSource(), charset));
MySQLDataSource ds = node.getSource();
if (ds != null) {
row.add(IntegerUtil.toBytes(ds.getIndex()));
row.add(ds.getConfig().getType().getBytes());
row.add(IntegerUtil.toBytes(ds.getActiveCount()));
row.add(IntegerUtil.toBytes(ds.getIdleCount()));
row.add(IntegerUtil.toBytes(ds.size()));
} else {
row.add(null);
row.add(null);
row.add(null);
row.add(null);
row.add(null);
}
row.add(LongUtil.toBytes(node.getExecuteCount()));
row.add(StringUtil.encode(nf.format(0), charset));
row.add(StringUtil.encode(nf.format(0), charset));
row.add(LongUtil.toBytes(0));
long recoveryTime = node.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());
}
}
}
}