clohfink commented on code in PR #3367: URL: https://github.com/apache/cassandra/pull/3367#discussion_r1683363500
########## src/java/org/apache/cassandra/repair/autorepair/AutoRepair.java: ########## @@ -0,0 +1,401 @@ +/* + * 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.autorepair; + +import java.util.ArrayList; +import java.util.EnumMap; +import java.util.HashSet; +import java.util.Iterator; +import java.util.List; +import java.util.Map; +import java.util.Set; +import java.util.UUID; +import java.util.concurrent.FutureTask; +import java.util.concurrent.TimeUnit; +import java.util.function.Supplier; + +import com.google.common.annotations.VisibleForTesting; +import com.google.common.collect.ImmutableList; + +import org.apache.cassandra.repair.RepairRunnable; +import org.apache.cassandra.utils.Pair; + +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import org.apache.cassandra.concurrent.NamedThreadFactory; +import org.apache.cassandra.concurrent.ScheduledExecutorPlus; +import org.apache.cassandra.config.DatabaseDescriptor; +import org.apache.cassandra.db.ColumnFamilyStore; +import org.apache.cassandra.db.Keyspace; +import org.apache.cassandra.dht.Range; +import org.apache.cassandra.dht.Token; +import org.apache.cassandra.exceptions.ConfigurationException; +import org.apache.cassandra.gms.Gossiper; +import org.apache.cassandra.schema.TableMetadata; +import org.apache.cassandra.schema.Tables; +import org.apache.cassandra.service.AutoRepairService; +import org.apache.cassandra.utils.FBUtilities; +import org.apache.cassandra.repair.autorepair.AutoRepairUtils.RepairTurn; + +import static org.apache.cassandra.concurrent.ExecutorFactory.Global.executorFactory; +import static org.apache.cassandra.repair.autorepair.AutoRepairUtils.RepairTurn.MY_TURN; +import static org.apache.cassandra.repair.autorepair.AutoRepairUtils.RepairTurn.MY_TURN_DUE_TO_PRIORITY; +import static org.apache.cassandra.repair.autorepair.AutoRepairUtils.RepairTurn.MY_TURN_FORCE_REPAIR; + +public class AutoRepair +{ + // Initial delay for repair session to start after setup + final static long INITIAL_REPAIR_DELAY_SEC = 30; + + private static final Logger logger = LoggerFactory.getLogger(AutoRepair.class); + + @VisibleForTesting + protected static Supplier<Long> timeFunc = System::currentTimeMillis; + + public static AutoRepair instance = new AutoRepair(); + + @VisibleForTesting + protected final Map<AutoRepairConfig.RepairType, ScheduledExecutorPlus> repairExecutors; + @VisibleForTesting + protected final Map<AutoRepairConfig.RepairType, AutoRepairState> repairStates; + + protected final Map<AutoRepairConfig.RepairType, IAutoRepairTokenRangeSplitter> tokenRangeSplitters = new EnumMap<>(AutoRepairConfig.RepairType.class); + + + @VisibleForTesting + protected AutoRepair() + { + AutoRepairConfig config = DatabaseDescriptor.getAutoRepairConfig(); + repairExecutors = new EnumMap<>(AutoRepairConfig.RepairType.class); + repairStates = new EnumMap<>(AutoRepairConfig.RepairType.class); + for (AutoRepairConfig.RepairType repairType : AutoRepairConfig.RepairType.values()) + { + repairExecutors.put(repairType, executorFactory().scheduled(false, "AutoRepair-Repair-" + repairType, Thread.NORM_PRIORITY)); + repairStates.put(repairType, AutoRepairConfig.RepairType.getAutoRepairState(repairType)); + tokenRangeSplitters.put(repairType, FBUtilities.newAutoRepairTokenRangeSplitter(config.getTokenRangeSplitter(repairType))); + } + } + + public void setup() + { + verifyIsSafeToEnable(); + + AutoRepairConfig config = DatabaseDescriptor.getAutoRepairConfig(); + AutoRepairService.setup(); + AutoRepairUtils.setup(); + + for (AutoRepairConfig.RepairType repairType : AutoRepairConfig.RepairType.values()) + { + repairExecutors.get(repairType).scheduleWithFixedDelay( + () -> repair(repairType, 60000), + INITIAL_REPAIR_DELAY_SEC, + config.getRepairCheckInterval().toSeconds(), + TimeUnit.SECONDS); + } + } + + @VisibleForTesting + protected void verifyIsSafeToEnable() + { + AutoRepairConfig config = DatabaseDescriptor.getAutoRepairConfig(); + if (config.isAutoRepairEnabled(AutoRepairConfig.RepairType.incremental) && + (DatabaseDescriptor.getMaterializedViewsEnabled() || DatabaseDescriptor.isCDCEnabled())) + throw new ConfigurationException("Cannot enable incremental repair with materialized views or CDC enabled"); + } + + // repairAsync runs a repair session of the given type asynchronously. + public void repairAsync(AutoRepairConfig.RepairType repairType, long millisToWait) + { + repairExecutors.get(repairType).submit(() -> repair(repairType, millisToWait)); + } + + // repair runs a repair session of the given type synchronously. + public void repair(AutoRepairConfig.RepairType repairType, long millisToWait) Review Comment: NP: maybe simplify this method a little breaking it up, its very long and deep -- This is an automated message from the Apache Git Service. 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