Mercurial > hg > Members > shoshi > jungle > bbs
view src/main/java/jp/ac/u_ryukyu/ie/cr/bbs/network/BulletinBoardJungleManager.java @ 20:7164db5bc76f
fix BulltinBoardJungleamanager singleton
author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
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date | Mon, 28 Aug 2017 11:14:19 +0900 |
parents | 6e91ad317eb0 |
children |
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package jp.ac.u_ryukyu.ie.cr.bbs.network; import jp.ac.u_ryukyu.ie.cr.jungle.DefaultJungle; import jp.ac.u_ryukyu.ie.cr.jungle.Jungle; import jp.ac.u_ryukyu.ie.cr.jungle.store.nodepath.DefaultNodePath; import jp.ac.u_ryukyu.ie.cr.jungle.transaction.editor.jungleTreeEditor.JungleTreeEditor; import jp.ac.u_ryukyu.ie.cr.jungle.transaction.node.TreeNode; import jp.ac.u_ryukyu.ie.cr.jungle.tree.JungleTree; import jp.ac.u_ryukyu.ie.cr.jungle.util.Either; import jp.ac.u_ryukyu.ie.cr.jungle.util.jungleError.Error; import jp.ac.u_ryukyu.ie.cr.jungleNetwork.codesegment.JungleDistributedUpdator; import jp.ac.u_ryukyu.ie.cr.jungleNetwork.operations.NetworkTreeOperationLog; import jp.ac.u_ryukyu.ie.cr.jungleNetwork.transaction.JungleUpdater; import java.nio.ByteBuffer; import java.util.concurrent.atomic.AtomicInteger; public class BulletinBoardJungleManager implements JungleDistributedUpdator { private Jungle jungle; private AtomicInteger requestCounter = new AtomicInteger(0); BulletinBoardJungleManager(Jungle jungle) { this.jungle = jungle; } public int requestGetAndIncrement() { return requestCounter.getAndIncrement(); } public int requestIncrementAndGet() { return requestCounter.incrementAndGet(); } public void setJungle(Jungle _j) { jungle = _j; } public AtomicInteger getRequestCounter() { return requestCounter; } public Jungle getJungle() { return jungle; } public JungleTree createNewTree(String name) { return jungle.createNewTree(name); } @Override public Either<Error, JungleTreeEditor> update(NetworkTreeOperationLog netLog) { String treeName = netLog.getTreeName(); Jungle jungle = getJungle(); if (jungle.getTreeByName(treeName) == null) { if(null == jungle.createNewTree(treeName)){ throw new IllegalStateException(); } } Either<Error, JungleTreeEditor> either = null; JungleTree tree = jungle.getTreeByName(treeName); long timestamp = System.currentTimeMillis(); ByteBuffer tBuffer = ByteBuffer.allocate(16); DefaultNodePath root = new DefaultNodePath(); tBuffer.putLong(timestamp); do { JungleTreeEditor editor = tree.getJungleTreeEditor(); /* * Merge. */ int pos = calculatePosition(tree.getRootNode(), netLog.getTimeStamp()); either = JungleUpdater.edit(editor, netLog, pos); if(either.isA()) { throw new IllegalStateException(); } editor = either.b(); either = editor.putAttribute(root, "renewtime", tBuffer); if(either.isA()) { throw new IllegalStateException(); } editor = either.b(); either = editor.success(); }while(either.isA()); requestIncrementAndGet(); return either; } private int calculatePosition(TreeNode node, long newNodeTimeStamp) { int count = 0; long childTimeStamp = 0; for(TreeNode n : node.getChildren()) { ByteBuffer timestamp = n.getAttributes().get("timestamp"); if(timestamp == null) { return count; } childTimeStamp = timestamp.getLong(0); if (newNodeTimeStamp < childTimeStamp) { break; } count++; } return count; } }