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ABR8: Pull out session-scoped classes (#5841)
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111 changes: 111 additions & 0 deletions
111
...sdb-cassandra/src/main/java/com/palantir/atlasdb/cassandra/backup/RepairRangeFetcher.java
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| /* | ||
| * (c) Copyright 2022 Palantir Technologies Inc. All rights reserved. | ||
| * | ||
| * Licensed 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. | ||
| */ | ||
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|
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| package com.palantir.atlasdb.cassandra.backup; | ||
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| import com.datastax.driver.core.Statement; | ||
| import com.datastax.driver.core.TableMetadata; | ||
| import com.google.common.collect.Multimap; | ||
| import com.google.common.collect.Multimaps; | ||
| import com.google.common.collect.RangeSet; | ||
| import com.palantir.atlasdb.cassandra.CassandraKeyValueServiceConfig; | ||
| import com.palantir.atlasdb.cassandra.CassandraServersConfigs; | ||
| import com.palantir.atlasdb.cassandra.backup.transaction.TransactionsTableInteraction; | ||
| import com.palantir.atlasdb.keyvalue.cassandra.LightweightOppToken; | ||
| import com.palantir.common.streams.KeyedStream; | ||
| import com.palantir.logsafe.SafeArg; | ||
| import com.palantir.logsafe.logger.SafeLogger; | ||
| import com.palantir.logsafe.logger.SafeLoggerFactory; | ||
| import com.palantir.timestamp.FullyBoundedTimestampRange; | ||
| import java.net.InetSocketAddress; | ||
| import java.util.Collection; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
| import java.util.Set; | ||
| import java.util.stream.Collectors; | ||
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| final class RepairRangeFetcher { | ||
| private static final SafeLogger log = SafeLoggerFactory.get(RepairRangeFetcher.class); | ||
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| private final CqlSession cqlSession; | ||
| private final CqlMetadata cqlMetadata; | ||
| private final CassandraKeyValueServiceConfig config; | ||
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| public RepairRangeFetcher(CqlSession cqlSession, CassandraKeyValueServiceConfig config) { | ||
| this.cqlSession = cqlSession; | ||
| this.cqlMetadata = cqlSession.getMetadata(); | ||
| this.config = config; | ||
| } | ||
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| public Map<String, Map<InetSocketAddress, RangeSet<LightweightOppToken>>> getTransactionTableRangesForRepair( | ||
| List<TransactionsTableInteraction> transactionsTableInteractions) { | ||
| String keyspaceName = config.getKeyspaceOrThrow(); | ||
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| Map<String, Set<LightweightOppToken>> partitionKeysByTable = | ||
| getPartitionTokensByTable(transactionsTableInteractions, keyspaceName); | ||
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| maybeLogTokenRanges(transactionsTableInteractions, partitionKeysByTable); | ||
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| Set<InetSocketAddress> hosts = CassandraServersConfigs.getCqlHosts(config); | ||
| return KeyedStream.stream(partitionKeysByTable) | ||
| .map(ranges -> ClusterMetadataUtils.getTokenMapping(hosts, cqlMetadata, keyspaceName, ranges)) | ||
| .collectToMap(); | ||
| } | ||
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| private Map<String, Set<LightweightOppToken>> getPartitionTokensByTable( | ||
| List<TransactionsTableInteraction> transactionsTableInteractions, String keyspaceName) { | ||
| Multimap<String, TransactionsTableInteraction> interactionsByTable = | ||
| Multimaps.index(transactionsTableInteractions, TransactionsTableInteraction::getTransactionsTableName); | ||
| return KeyedStream.stream(interactionsByTable.asMap()) | ||
| .map(interactionsForTable -> | ||
| getPartitionsTokenForSingleTransactionsTable(keyspaceName, interactionsForTable)) | ||
| .collectToMap(); | ||
| } | ||
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| private Set<LightweightOppToken> getPartitionsTokenForSingleTransactionsTable( | ||
| String keyspaceName, Collection<TransactionsTableInteraction> interactions) { | ||
| return interactions.stream() | ||
| .map(interaction -> getPartitionTokensForTransactionsTable(keyspaceName, interaction)) | ||
| .flatMap(Collection::stream) | ||
| .collect(Collectors.toSet()); | ||
| } | ||
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| private Set<LightweightOppToken> getPartitionTokensForTransactionsTable( | ||
| String keyspaceName, TransactionsTableInteraction interaction) { | ||
| TableMetadata transactionsTableMetadata = ClusterMetadataUtils.getTableMetadata( | ||
| cqlMetadata, keyspaceName, interaction.getTransactionsTableName()); | ||
| List<Statement> selectStatements = | ||
| interaction.createSelectStatementsForScanningFullTimestampRange(transactionsTableMetadata); | ||
| return cqlSession.retrieveRowKeysAtConsistencyAll(selectStatements); | ||
| } | ||
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| private static void maybeLogTokenRanges( | ||
| List<TransactionsTableInteraction> transactionsTableInteractions, | ||
| Map<String, Set<LightweightOppToken>> partitionKeysByTable) { | ||
| if (log.isDebugEnabled()) { | ||
| Multimap<String, TransactionsTableInteraction> indexedInteractions = Multimaps.index( | ||
| transactionsTableInteractions, TransactionsTableInteraction::getTransactionsTableName); | ||
| Multimap<String, FullyBoundedTimestampRange> loggableTableRanges = | ||
| Multimaps.transformValues(indexedInteractions, TransactionsTableInteraction::getTimestampRange); | ||
| Map<String, Integer> numPartitionKeysByTable = | ||
| KeyedStream.stream(partitionKeysByTable).map(Set::size).collectToMap(); | ||
| log.debug( | ||
| "Identified token ranges requiring repair in the following transactions tables", | ||
| SafeArg.of("transactionsTablesWithRanges", loggableTableRanges), | ||
| SafeArg.of("numPartitionKeysByTable", numPartitionKeysByTable)); | ||
| } | ||
| } | ||
| } |
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