| /* |
| * 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.cassandra.repair.consistent; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.UUID; |
| |
| import com.google.common.base.Preconditions; |
| |
| import org.apache.cassandra.locator.InetAddressAndPort; |
| import org.apache.cassandra.repair.messages.FailSession; |
| import org.apache.cassandra.repair.messages.FinalizePromise; |
| import org.apache.cassandra.repair.messages.PrepareConsistentResponse; |
| import org.apache.cassandra.service.ActiveRepairService; |
| |
| /** |
| * Container for all consistent repair sessions a node is coordinating |
| */ |
| public class CoordinatorSessions |
| { |
| private final Map<UUID, CoordinatorSession> sessions = new HashMap<>(); |
| |
| protected CoordinatorSession buildSession(CoordinatorSession.Builder builder) |
| { |
| return new CoordinatorSession(builder); |
| } |
| |
| public synchronized CoordinatorSession registerSession(UUID sessionId, Set<InetAddressAndPort> participants, boolean isForced) |
| { |
| ActiveRepairService.ParentRepairSession prs = ActiveRepairService.instance.getParentRepairSession(sessionId); |
| |
| Preconditions.checkArgument(!sessions.containsKey(sessionId), |
| "A coordinator already exists for session %s", sessionId); |
| Preconditions.checkArgument(!isForced || prs.repairedAt == ActiveRepairService.UNREPAIRED_SSTABLE, |
| "cannot promote data for forced incremental repairs"); |
| |
| CoordinatorSession.Builder builder = CoordinatorSession.builder(); |
| builder.withState(ConsistentSession.State.PREPARING); |
| builder.withSessionID(sessionId); |
| builder.withCoordinator(prs.coordinator); |
| |
| builder.withTableIds(prs.getTableIds()); |
| builder.withRepairedAt(prs.repairedAt); |
| builder.withRanges(prs.getRanges()); |
| builder.withParticipants(participants); |
| CoordinatorSession session = buildSession(builder); |
| sessions.put(session.sessionID, session); |
| return session; |
| } |
| |
| public synchronized CoordinatorSession getSession(UUID sessionId) |
| { |
| return sessions.get(sessionId); |
| } |
| |
| public void handlePrepareResponse(PrepareConsistentResponse msg) |
| { |
| CoordinatorSession session = getSession(msg.parentSession); |
| if (session != null) |
| { |
| session.handlePrepareResponse(msg.participant, msg.success); |
| } |
| } |
| |
| public void handleFinalizePromiseMessage(FinalizePromise msg) |
| { |
| CoordinatorSession session = getSession(msg.sessionID); |
| if (session != null) |
| { |
| session.handleFinalizePromise(msg.participant, msg.promised); |
| } |
| } |
| |
| public void handleFailSessionMessage(FailSession msg) |
| { |
| CoordinatorSession session = getSession(msg.sessionID); |
| if (session != null) |
| { |
| session.fail(); |
| } |
| } |
| } |