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split merge hander actiontech#1139 (actiontech#1140)
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112 changes: 112 additions & 0 deletions
112
...a/com/actiontech/dble/backend/mysql/nio/handler/query/impl/MultiNodeEasyMergeHandler.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,112 @@ | ||
| /* | ||
| * Copyright (C) 2016-2019 ActionTech. | ||
| * License: http://www.gnu.org/licenses/gpl.html GPL version 2 or higher. | ||
| */ | ||
|
|
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| package com.actiontech.dble.backend.mysql.nio.handler.query.impl; | ||
|
|
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| import com.actiontech.dble.backend.BackendConnection; | ||
| import com.actiontech.dble.backend.mysql.nio.MySQLConnection; | ||
| import com.actiontech.dble.net.mysql.FieldPacket; | ||
| import com.actiontech.dble.net.mysql.RowDataPacket; | ||
| import com.actiontech.dble.route.RouteResultsetNode; | ||
| import com.actiontech.dble.server.NonBlockingSession; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
|
|
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| import java.util.List; | ||
|
|
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| /** | ||
| * mergeHandler will merge data,if contains aggregate function,use group by handler | ||
| * | ||
| * @author ActionTech | ||
| */ | ||
| public class MultiNodeEasyMergeHandler extends MultiNodeMergeHandler { | ||
| private static final Logger LOGGER = LoggerFactory.getLogger(MultiNodeEasyMergeHandler.class); | ||
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| public MultiNodeEasyMergeHandler(long id, RouteResultsetNode[] route, boolean autocommit, NonBlockingSession session) { | ||
| super(id, route, autocommit, session); | ||
| this.merges.add(this); | ||
| } | ||
|
|
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| @Override | ||
| public void execute() throws Exception { | ||
| synchronized (exeHandlers) { | ||
| if (terminate.get()) | ||
| return; | ||
| for (BaseSelectHandler exeHandler : exeHandlers) { | ||
| session.setHandlerStart(exeHandler); //base start execute | ||
| MySQLConnection exeConn = exeHandler.initConnection(); | ||
| if (exeConn != null) { | ||
| exeConn.setComplexQuery(true); | ||
| exeHandler.execute(exeConn); | ||
| } | ||
| } | ||
| } | ||
| } | ||
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| @Override | ||
| public void fieldEofResponse(byte[] header, List<byte[]> fields, List<FieldPacket> fieldPackets, byte[] eof, | ||
| boolean isLeft, BackendConnection conn) { | ||
| if (LOGGER.isDebugEnabled()) { | ||
| LOGGER.debug(conn.toString() + "'s field is reached."); | ||
| } | ||
| session.setHandlerStart(this); | ||
| // if terminated | ||
| if (terminate.get()) { | ||
| return; | ||
| } | ||
| lock.lock(); // for combine | ||
| try { | ||
| if (this.fieldPackets.isEmpty()) { | ||
| this.fieldPackets = fieldPackets; | ||
| nextHandler.fieldEofResponse(null, null, fieldPackets, null, this.isLeft, conn); | ||
| } | ||
| startEasyMerge(); | ||
| if (++reachedConCount == route.length) { | ||
| session.allBackendConnReceive(); | ||
| } | ||
| } finally { | ||
| lock.unlock(); | ||
| } | ||
| } | ||
|
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| @Override | ||
| public boolean rowResponse(byte[] row, RowDataPacket rowPacket, boolean isLeft, BackendConnection conn) { | ||
| if (terminate.get()) | ||
| return true; | ||
| return nextHandler.rowResponse(null, rowPacket, this.isLeft, conn); | ||
| } | ||
|
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| @Override | ||
| public void rowEofResponse(byte[] data, boolean isLeft, BackendConnection conn) { | ||
| if (LOGGER.isDebugEnabled()) { | ||
| LOGGER.debug(conn.toString() + " 's rowEof is reached."); | ||
| } | ||
|
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| if (this.terminate.get()) | ||
| return; | ||
| lock.lock(); | ||
| try { | ||
| if (reachedConCount == route.length) { | ||
| session.setHandlerEnd(this); | ||
| nextHandler.rowEofResponse(null, this.isLeft, conn); | ||
| } | ||
| } finally { | ||
| lock.unlock(); | ||
| } | ||
| } | ||
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| @Override | ||
| protected void ownThreadJob(Object... objects) { | ||
| } | ||
|
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| @Override | ||
| protected void terminateThread() throws Exception { | ||
| recycleConn(); | ||
| } | ||
|
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| @Override | ||
| protected void recycleResources() { | ||
| } | ||
| } |
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