| /* |
| * 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.persistence; |
| |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.concurrent.ConcurrentHashMap; |
| |
| import org.apache.logging.log4j.Logger; |
| |
| import org.apache.geode.cache.persistence.RevokedPersistentDataException; |
| import org.apache.geode.distributed.internal.DistributionManager; |
| import org.apache.geode.distributed.internal.MembershipListener; |
| import org.apache.geode.distributed.internal.ProfileListener; |
| import org.apache.geode.distributed.internal.membership.InternalDistributedMember; |
| import org.apache.geode.internal.logging.LogService; |
| |
| public class PersistentMemberManager { |
| private static final Logger logger = LogService.getLogger(); |
| |
| private final Set<MemberRevocationListener> revocationListeners = |
| new HashSet<MemberRevocationListener>(); |
| private final Map<PersistentMemberPattern, Object> revokedMembers = |
| new ConcurrentHashMap<PersistentMemberPattern, Object>(); |
| private Map<PersistentMemberPattern, PendingRevokeListener> pendingRevokes = |
| new HashMap<PersistentMemberPattern, PendingRevokeListener>(); |
| |
| private static final Object TOKEN = new Object(); |
| |
| public PersistentMemberManager() {} |
| |
| public void revokeMember(PersistentMemberPattern pattern) { |
| cancelRevoke(pattern); |
| synchronized (this) { |
| if (revokedMembers.put(pattern, TOKEN) == null) { |
| logger.info("The following persistent member has been revoked: {}", |
| pattern); |
| for (MemberRevocationListener listener : revocationListeners) { |
| listener.revoked(pattern); |
| } |
| } |
| } |
| } |
| |
| /** |
| * Add a new revocation listener |
| * |
| * @param listener The revocation listener |
| * @param recoveredRevokedMembers a set of members which the listener knows have been revoked |
| */ |
| public HashSet<PersistentMemberPattern> addRevocationListener(MemberRevocationListener listener, |
| Set<PersistentMemberPattern> recoveredRevokedMembers) { |
| synchronized (this) { |
| // Fix for 42607, don't allow us to start up a member if we're in the |
| // process of revoking that member. |
| for (PersistentMemberPattern pattern : pendingRevokes.keySet()) { |
| if (listener.matches(pattern)) { |
| throw new RevokedPersistentDataException( |
| String.format( |
| "The persistent member id %s has been revoked in this distributed system. You cannot recover from disk files which have been revoked.", |
| pattern)); |
| } |
| } |
| for (PersistentMemberPattern pattern : revokedMembers.keySet()) { |
| if (listener.matches(pattern)) { |
| throw new RevokedPersistentDataException( |
| String.format( |
| "The persistent member id %s has been revoked in this distributed system. You cannot recover from disk files which have been revoked.", |
| pattern)); |
| } |
| } |
| for (PersistentMemberPattern pattern : recoveredRevokedMembers) { |
| revokedMembers.put(pattern, TOKEN); |
| } |
| revocationListeners.add(listener); |
| return new HashSet<PersistentMemberPattern>(revokedMembers.keySet()); |
| } |
| } |
| |
| public void removeRevocationListener(ProfileListener listener) { |
| synchronized (this) { |
| revocationListeners.remove(listener); |
| } |
| } |
| |
| public HashSet<PersistentMemberPattern> getRevokedMembers() { |
| synchronized (this) { |
| return new HashSet<PersistentMemberPattern>(revokedMembers.keySet()); |
| } |
| } |
| |
| /** |
| * Returns a map of the regions that are waiting to recover to the persistent member ids that each |
| * region is waiting for. |
| */ |
| public Map<String, Set<PersistentMemberID>> getWaitingRegions() { |
| synchronized (this) { |
| Map<String, Set<PersistentMemberID>> missingMemberIds = |
| new HashMap<String, Set<PersistentMemberID>>(); |
| for (MemberRevocationListener listener : revocationListeners) { |
| String regionPath = listener.getRegionPath(); |
| Set<PersistentMemberID> ids = listener.getMissingMemberIds(); |
| Set<PersistentMemberID> allIds = missingMemberIds.get(regionPath); |
| if (ids != null) { |
| if (allIds != null) { |
| allIds.addAll(ids); |
| } else { |
| allIds = ids; |
| missingMemberIds.put(regionPath, allIds); |
| } |
| } |
| } |
| return missingMemberIds; |
| } |
| } |
| |
| public boolean isRevoked(String regionPath, PersistentMemberID id) { |
| for (PersistentMemberPattern member : revokedMembers.keySet()) { |
| if (member.matches(id)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| /** |
| * Prepare the revoke of a persistent id. |
| * |
| * @param pattern the pattern to revoke |
| * @param dm the distribution manager |
| * @param sender the originator of the prepare |
| * @return true if this member is not currently running the chosen disk store. false if the revoke |
| * should be aborted because the disk store is already running. |
| */ |
| public boolean prepareRevoke(PersistentMemberPattern pattern, DistributionManager dm, |
| InternalDistributedMember sender) { |
| if (logger.isDebugEnabled()) { |
| logger.debug("Preparing revoke if pattern {}", pattern); |
| } |
| |
| |
| PendingRevokeListener membershipListener = new PendingRevokeListener(pattern, sender, dm); |
| synchronized (this) { |
| for (MemberRevocationListener listener : revocationListeners) { |
| if (listener.matches(pattern)) { |
| return false; |
| } |
| } |
| |
| pendingRevokes.put(pattern, membershipListener); |
| } |
| |
| // Add a membership listener to make sure we cancel the pending |
| // revoke if the sender goes away. |
| // DO this outside the synch block to avoid lock ordering issues. |
| Set members = dm.addMembershipListenerAndGetDistributionManagerIds(membershipListener); |
| if (!members.contains(sender) && sender.equals(dm.getId())) { |
| cancelRevoke(pattern); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| public void cancelRevoke(PersistentMemberPattern pattern) { |
| PendingRevokeListener listener; |
| synchronized (this) { |
| listener = pendingRevokes.remove(pattern); |
| } |
| if (listener != null) { |
| if (logger.isDebugEnabled()) { |
| logger.debug("Cancelling revoke of id {}", pattern); |
| } |
| listener.remove(); |
| } |
| } |
| |
| public interface MemberRevocationListener { |
| void revoked(PersistentMemberPattern pattern); |
| |
| /** |
| * Return true if this is a listener for a resource that matches the persistent member pattern |
| * in question. |
| */ |
| boolean matches(PersistentMemberPattern pattern); |
| |
| /** |
| * Return the set of member ids which this resource knows are missing |
| */ |
| Set<PersistentMemberID> getMissingMemberIds(); |
| |
| String getRegionPath(); |
| } |
| |
| public class PendingRevokeListener implements MembershipListener { |
| InternalDistributedMember sender; |
| private PersistentMemberPattern pattern; |
| private DistributionManager dm; |
| |
| public PendingRevokeListener(PersistentMemberPattern pattern, InternalDistributedMember sender, |
| DistributionManager dm) { |
| this.dm = dm; |
| this.pattern = pattern; |
| this.sender = sender; |
| } |
| |
| @Override |
| public void memberJoined(DistributionManager distributionManager, |
| InternalDistributedMember id) { |
| |
| } |
| |
| @Override |
| public void memberDeparted(DistributionManager distributionManager, |
| InternalDistributedMember id, boolean crashed) { |
| if (id.equals(sender)) { |
| cancelRevoke(pattern); |
| } |
| |
| } |
| |
| @Override |
| public void memberSuspect(DistributionManager distributionManager, InternalDistributedMember id, |
| InternalDistributedMember whoSuspected, String reason) {} |
| |
| @Override |
| public void quorumLost(DistributionManager distributionManager, |
| Set<InternalDistributedMember> failures, List<InternalDistributedMember> remaining) {} |
| |
| public void remove() { |
| dm.removeAllMembershipListener(this); |
| } |
| |
| } |
| } |