| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more contributor license |
| * agreements. See the NOTICE file distributed with this work for additional information regarding |
| * copyright ownership. The ASF licenses this file to You 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.apache.geode.internal.cache.control; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Set; |
| import java.util.concurrent.CancellationException; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.Future; |
| import java.util.concurrent.RejectedExecutionException; |
| import java.util.concurrent.ScheduledExecutorService; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.TimeoutException; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| |
| import org.apache.logging.log4j.Logger; |
| |
| import org.apache.geode.GemFireException; |
| import org.apache.geode.InternalGemFireError; |
| import org.apache.geode.SystemFailure; |
| import org.apache.geode.cache.RegionDestroyedException; |
| import org.apache.geode.cache.control.RebalanceOperation; |
| import org.apache.geode.cache.control.RebalanceResults; |
| import org.apache.geode.cache.partition.PartitionRebalanceInfo; |
| import org.apache.geode.internal.cache.InternalCache; |
| import org.apache.geode.internal.cache.PartitionedRegion; |
| import org.apache.geode.internal.cache.partitioned.PartitionedRegionRebalanceOp; |
| import org.apache.geode.internal.cache.partitioned.rebalance.CompositeDirector; |
| import org.apache.geode.logging.internal.log4j.api.LogService; |
| import org.apache.geode.util.internal.GeodeGlossary; |
| |
| /** |
| * Implements {@code RebalanceOperation} for rebalancing Cache resources. |
| */ |
| @SuppressWarnings("synthetic-access") |
| public class RebalanceOperationImpl implements RebalanceOperation { |
| private static final Logger logger = LogService.getLogger(); |
| |
| private final boolean simulation; |
| private final InternalCache cache; |
| private final List<Future<RebalanceResults>> futureList = |
| new ArrayList<>(); |
| private int pendingTasks; |
| private final AtomicBoolean cancelled = new AtomicBoolean(); |
| private final Object futureLock = new Object(); |
| private final RegionFilter filter; |
| |
| RebalanceOperationImpl(InternalCache cache, boolean simulation, RegionFilter filter) { |
| this.simulation = simulation; |
| this.cache = cache; |
| this.filter = filter; |
| } |
| |
| public void start() { |
| final InternalResourceManager manager = cache.getInternalResourceManager(); |
| synchronized (futureLock) { |
| manager.addInProgressRebalance(this); |
| scheduleRebalance(); |
| } |
| } |
| |
| private void scheduleRebalance() { |
| ResourceManagerStats stats = cache.getInternalResourceManager().getStats(); |
| |
| long start = stats.startRebalance(); |
| try { |
| for (PartitionedRegion region : cache.getPartitionedRegions()) { |
| if (cancelled.get()) { |
| break; |
| } |
| try { |
| // Colocated regions will be rebalanced as part of rebalancing their leader |
| if (region.getColocatedWith() == null && filter.include(region)) { |
| |
| if (region.isFixedPartitionedRegion()) { |
| if (Boolean.getBoolean( |
| GeodeGlossary.GEMFIRE_PREFIX + "DISABLE_MOVE_PRIMARIES_ON_STARTUP")) { |
| PartitionedRegionRebalanceOp prOp = new PartitionedRegionRebalanceOp(region, |
| simulation, new CompositeDirector(false, false, false, true), true, true, |
| cancelled, stats); |
| futureList.add(submitRebalanceTask(prOp, start)); |
| } else { |
| continue; |
| } |
| } else { |
| PartitionedRegionRebalanceOp prOp = |
| new PartitionedRegionRebalanceOp(region, simulation, |
| new CompositeDirector(true, true, true, true), true, true, cancelled, stats); |
| futureList.add(submitRebalanceTask(prOp, start)); |
| } |
| } |
| } catch (RegionDestroyedException ignore) { |
| // ignore, go on to the next region |
| } |
| } |
| } finally { |
| if (pendingTasks == 0) { |
| // if we didn't submit any tasks, end the rebalance now. |
| stats.endRebalance(start); |
| } |
| } |
| } |
| |
| private Future<RebalanceResults> submitRebalanceTask( |
| final PartitionedRegionRebalanceOp rebalanceOp, final long rebalanceStartTime) { |
| final InternalResourceManager manager = cache.getInternalResourceManager(); |
| ScheduledExecutorService ex = manager.getExecutor(); |
| |
| synchronized (futureLock) { |
| // this update should happen inside this.futureLock |
| pendingTasks++; |
| |
| try { |
| Future<RebalanceResults> future = ex.submit(() -> { |
| try { |
| RebalanceResultsImpl results = new RebalanceResultsImpl(); |
| SystemFailure.checkFailure(); |
| cache.getCancelCriterion().checkCancelInProgress(null); |
| |
| Set<PartitionRebalanceInfo> detailSet = null; |
| |
| detailSet = rebalanceOp.execute(); |
| |
| for (PartitionRebalanceInfo details : detailSet) { |
| results.addDetails(details); |
| } |
| return results; |
| } catch (RuntimeException e) { |
| logger.debug("Unexpected exception in rebalancing: {}", e.getMessage(), e); |
| throw e; |
| } finally { |
| synchronized (futureLock) { |
| pendingTasks--; |
| if (pendingTasks == 0) {// all threads done |
| manager.removeInProgressRebalance(RebalanceOperationImpl.this); |
| manager.getStats().endRebalance(rebalanceStartTime); |
| } |
| } |
| } |
| }); |
| |
| return future; |
| } catch (RejectedExecutionException e) { |
| cache.getCancelCriterion().checkCancelInProgress(null); |
| throw e; |
| } |
| } |
| } |
| |
| private List<Future<RebalanceResults>> getFutureList() { |
| synchronized (futureList) { |
| return futureList; |
| } |
| } |
| |
| @Override |
| public boolean cancel() { |
| cancelled.set(true); |
| |
| synchronized (futureLock) { |
| for (Future<RebalanceResults> fr : getFutureList()) { |
| if (fr.cancel(false)) { |
| pendingTasks--; |
| } |
| } |
| if (pendingTasks == 0) { |
| cache.getInternalResourceManager().removeInProgressRebalance(this); |
| } |
| } |
| |
| return true; |
| } |
| |
| @Override |
| public RebalanceResults getResults() throws CancellationException, InterruptedException { |
| RebalanceResultsImpl results = new RebalanceResultsImpl(); |
| List<Future<RebalanceResults>> frlist = getFutureList(); |
| for (Future<RebalanceResults> fr : frlist) { |
| try { |
| RebalanceResults rr = fr.get(); |
| results.addDetails((RebalanceResultsImpl) rr); |
| |
| } catch (ExecutionException e) { |
| if (e.getCause() instanceof GemFireException) { |
| throw (GemFireException) e.getCause(); |
| } else if (e.getCause() instanceof InternalGemFireError) { |
| throw (InternalGemFireError) e.getCause(); |
| } else { |
| throw new InternalGemFireError(e.getCause()); |
| } |
| } |
| } |
| return results; |
| } |
| |
| @Override |
| public RebalanceResults getResults(long timeout, TimeUnit unit) |
| throws CancellationException, TimeoutException, InterruptedException { |
| long endTime = unit.toNanos(timeout) + System.nanoTime(); |
| |
| RebalanceResultsImpl results = new RebalanceResultsImpl(); |
| List<Future<RebalanceResults>> frlist = getFutureList(); |
| for (Future<RebalanceResults> fr : frlist) { |
| try { |
| long waitTime = endTime - System.nanoTime(); |
| RebalanceResults rr = fr.get(waitTime, TimeUnit.NANOSECONDS); |
| results.addDetails((RebalanceResultsImpl) rr); |
| } catch (ExecutionException e) { |
| if (e.getCause() instanceof GemFireException) { |
| throw (GemFireException) e.getCause(); |
| } else if (e.getCause() instanceof InternalGemFireError) { |
| throw (InternalGemFireError) e.getCause(); |
| } else { |
| throw new InternalGemFireError(e.getCause()); |
| } |
| } |
| } |
| return results; |
| } |
| |
| @Override |
| public boolean isCancelled() { |
| return cancelled.get(); |
| } |
| |
| private boolean isAllDone() { |
| for (Future<RebalanceResults> fr : getFutureList()) { |
| if (!fr.isDone()) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| @Override |
| public boolean isDone() { |
| return cancelled.get() || isAllDone(); |
| } |
| |
| /** |
| * Returns true if this is a simulation. |
| * |
| * @return true if this is a simulation |
| */ |
| boolean isSimulation() { |
| return simulation; |
| } |
| } |