/* * Copyright 2012-2015 org.opencloudb. * * 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 org.opencloudb.response; import java.nio.ByteBuffer; import org.opencloudb.MycatServer; import org.opencloudb.config.Fields; import org.opencloudb.heartbeat.MyCATDetector; import org.opencloudb.heartbeat.MyCATHeartbeat; import org.opencloudb.heartbeat.MySQLDetector; import org.opencloudb.heartbeat.MySQLHeartbeat; import org.opencloudb.manager.ManagerConnection; import org.opencloudb.mysql.PacketUtil; import org.opencloudb.net.BackendConnection; 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.util.IntegerUtil; import org.opencloudb.util.LongUtil; import org.opencloudb.util.StringUtil; import org.opencloudb.util.TimeUtil; /** * 查询后端连接 * * @author mycat */ 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 : MycatServer.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 MyCATDetector) { MyCATDetector detector = (MyCATDetector) c; MyCATHeartbeat 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; } }