alievmirza commented on code in PR #2095: URL: https://github.com/apache/ignite-3/pull/2095#discussion_r1268102802
########## modules/distribution-zones/src/main/java/org/apache/ignite/internal/distributionzones/causalitydatanodes/CausalityDataNodesEngine.java: ########## @@ -0,0 +1,681 @@ +/* + * 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.ignite.internal.distributionzones.causalitydatanodes; + +import static java.lang.Math.max; +import static java.util.Collections.emptySet; +import static java.util.stream.Collectors.toSet; +import static org.apache.ignite.internal.distributionzones.DistributionZoneManager.DEFAULT_ZONE_ID; +import static org.apache.ignite.internal.distributionzones.DistributionZoneManager.IMMEDIATE_TIMER_VALUE; +import static org.apache.ignite.internal.distributionzones.DistributionZonesUtil.filterDataNodes; +import static org.apache.ignite.internal.distributionzones.DistributionZonesUtil.zoneDataNodesKey; +import static org.apache.ignite.internal.distributionzones.DistributionZonesUtil.zoneScaleDownChangeTriggerKey; +import static org.apache.ignite.internal.distributionzones.DistributionZonesUtil.zoneScaleUpChangeTriggerKey; +import static org.apache.ignite.internal.distributionzones.DistributionZonesUtil.zoneVersionedConfigurationKey; +import static org.apache.ignite.internal.distributionzones.DistributionZonesUtil.zonesLogicalTopologyKey; +import static org.apache.ignite.internal.util.ByteUtils.bytesToLong; +import static org.apache.ignite.internal.util.ByteUtils.fromBytes; +import static org.apache.ignite.internal.util.ByteUtils.toBytes; + +import java.io.Serializable; +import java.util.HashSet; +import java.util.Iterator; +import java.util.List; +import java.util.Map; +import java.util.Set; +import java.util.concurrent.ConcurrentHashMap; +import java.util.concurrent.ConcurrentSkipListMap; +import org.apache.ignite.internal.distributionzones.DistributionZoneManager.Augmentation; +import org.apache.ignite.internal.distributionzones.DistributionZoneManager.ZoneState; +import org.apache.ignite.internal.distributionzones.DistributionZonesUtil; +import org.apache.ignite.internal.distributionzones.Node; +import org.apache.ignite.internal.distributionzones.NodeWithAttributes; +import org.apache.ignite.internal.distributionzones.configuration.DistributionZoneView; +import org.apache.ignite.internal.distributionzones.rebalance.DistributionZoneRebalanceEngine; +import org.apache.ignite.internal.logger.IgniteLogger; +import org.apache.ignite.internal.logger.Loggers; +import org.apache.ignite.internal.metastorage.Entry; +import org.apache.ignite.internal.metastorage.MetaStorageManager; +import org.apache.ignite.internal.vault.VaultEntry; +import org.apache.ignite.internal.vault.VaultManager; +import org.apache.ignite.lang.ByteArray; +import org.apache.ignite.lang.DistributionZoneNotFoundException; +import org.apache.ignite.lang.IgniteBiTuple; + +/** + * Causality data nodes manager. + */ +public class CausalityDataNodesEngine { + /** The logger. */ + private static final IgniteLogger LOG = Loggers.forClass(DistributionZoneRebalanceEngine.class); + + /** Meta Storage manager. */ + private final MetaStorageManager msManager; + + /** Vault manager. */ + private final VaultManager vaultMgr; + + /** + * Map with states for distribution zones. States are needed to track nodes that we want to add or remove from the data nodes, + * schedule and stop scale up and scale down processes. + */ + private final Map<Integer, ZoneState> zonesState; + + /** + * zoneId -> (revision -> zoneConfiguration). + */ + private final ConcurrentHashMap<Integer, ConcurrentSkipListMap<Long, ZoneConfiguration>> zonesVersionedCfg; + + /** + * Local mapping of {@code nodeId} -> node's attributes, where {@code nodeId} is a node id, that changes between restarts. + * This map is updated every time we receive a topology event in a {@code topologyWatchListener}. + * TODO: https://issues.apache.org/jira/browse/IGNITE-19491 properly clean up this map + * + * @see <a href="https://github.com/apache/ignite-3/blob/main/modules/distribution-zones/tech-notes/filters.md";>Filter documentation</a> + */ + private Map<String, Map<String, String>> nodesAttributes; + + /** + * The constructor. + * + * @param msManager msManager. + * @param vaultMgr vaultMgr. + * @param zonesState zonesState. + * @param nodesAttributes nodesAttributes. + */ + public CausalityDataNodesEngine( + MetaStorageManager msManager, + VaultManager vaultMgr, + Map<Integer, ZoneState> zonesState, Review Comment: why do we need to propagate `zoneState` and `nodesAttriburtes`, if we could just pass here `distributionZoneManager` itself and access these fields? ########## modules/distribution-zones/src/main/java/org/apache/ignite/internal/distributionzones/causalitydatanodes/CausalityDataNodesEngine.java: ########## @@ -0,0 +1,681 @@ +/* + * 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.ignite.internal.distributionzones.causalitydatanodes; + +import static java.lang.Math.max; +import static java.util.Collections.emptySet; +import static java.util.stream.Collectors.toSet; +import static org.apache.ignite.internal.distributionzones.DistributionZoneManager.DEFAULT_ZONE_ID; +import static org.apache.ignite.internal.distributionzones.DistributionZoneManager.IMMEDIATE_TIMER_VALUE; +import static org.apache.ignite.internal.distributionzones.DistributionZonesUtil.filterDataNodes; +import static org.apache.ignite.internal.distributionzones.DistributionZonesUtil.zoneDataNodesKey; +import static org.apache.ignite.internal.distributionzones.DistributionZonesUtil.zoneScaleDownChangeTriggerKey; +import static org.apache.ignite.internal.distributionzones.DistributionZonesUtil.zoneScaleUpChangeTriggerKey; +import static org.apache.ignite.internal.distributionzones.DistributionZonesUtil.zoneVersionedConfigurationKey; +import static org.apache.ignite.internal.distributionzones.DistributionZonesUtil.zonesLogicalTopologyKey; +import static org.apache.ignite.internal.util.ByteUtils.bytesToLong; +import static org.apache.ignite.internal.util.ByteUtils.fromBytes; +import static org.apache.ignite.internal.util.ByteUtils.toBytes; + +import java.io.Serializable; +import java.util.HashSet; +import java.util.Iterator; +import java.util.List; +import java.util.Map; +import java.util.Set; +import java.util.concurrent.ConcurrentHashMap; +import java.util.concurrent.ConcurrentSkipListMap; +import org.apache.ignite.internal.distributionzones.DistributionZoneManager.Augmentation; +import org.apache.ignite.internal.distributionzones.DistributionZoneManager.ZoneState; +import org.apache.ignite.internal.distributionzones.DistributionZonesUtil; +import org.apache.ignite.internal.distributionzones.Node; +import org.apache.ignite.internal.distributionzones.NodeWithAttributes; +import org.apache.ignite.internal.distributionzones.configuration.DistributionZoneView; +import org.apache.ignite.internal.distributionzones.rebalance.DistributionZoneRebalanceEngine; +import org.apache.ignite.internal.logger.IgniteLogger; +import org.apache.ignite.internal.logger.Loggers; +import org.apache.ignite.internal.metastorage.Entry; +import org.apache.ignite.internal.metastorage.MetaStorageManager; +import org.apache.ignite.internal.vault.VaultEntry; +import org.apache.ignite.internal.vault.VaultManager; +import org.apache.ignite.lang.ByteArray; +import org.apache.ignite.lang.DistributionZoneNotFoundException; +import org.apache.ignite.lang.IgniteBiTuple; + +/** + * Causality data nodes manager. + */ +public class CausalityDataNodesEngine { + /** The logger. */ + private static final IgniteLogger LOG = Loggers.forClass(DistributionZoneRebalanceEngine.class); + + /** Meta Storage manager. */ + private final MetaStorageManager msManager; + + /** Vault manager. */ + private final VaultManager vaultMgr; + + /** + * Map with states for distribution zones. States are needed to track nodes that we want to add or remove from the data nodes, + * schedule and stop scale up and scale down processes. + */ + private final Map<Integer, ZoneState> zonesState; + + /** + * zoneId -> (revision -> zoneConfiguration). + */ + private final ConcurrentHashMap<Integer, ConcurrentSkipListMap<Long, ZoneConfiguration>> zonesVersionedCfg; + + /** + * Local mapping of {@code nodeId} -> node's attributes, where {@code nodeId} is a node id, that changes between restarts. + * This map is updated every time we receive a topology event in a {@code topologyWatchListener}. + * TODO: https://issues.apache.org/jira/browse/IGNITE-19491 properly clean up this map + * + * @see <a href="https://github.com/apache/ignite-3/blob/main/modules/distribution-zones/tech-notes/filters.md";>Filter documentation</a> + */ + private Map<String, Map<String, String>> nodesAttributes; + + /** + * The constructor. + * + * @param msManager msManager. + * @param vaultMgr vaultMgr. + * @param zonesState zonesState. + * @param nodesAttributes nodesAttributes. + */ + public CausalityDataNodesEngine( + MetaStorageManager msManager, + VaultManager vaultMgr, + Map<Integer, ZoneState> zonesState, + Map<String, Map<String, String>> nodesAttributes + ) { + this.msManager = msManager; + this.vaultMgr = vaultMgr; + this.zonesState = zonesState; + this.nodesAttributes = nodesAttributes; + + zonesVersionedCfg = new ConcurrentHashMap<>(); + } + + /** + * Gets data nodes of the zone using causality token. + * + * <p>Return data nodes or throw the {@link DistributionZoneNotFoundException} if the zone with the provided {@code zoneId} + * does not exist. + * + * @param causalityToken Causality token. + * @param zoneId Zone id. + * @return The future which will be completed with data nodes for the zoneId or with exception. + */ + public Set<String> dataNodes(long causalityToken, int zoneId) { + LOG.info("+++++++ dataNodes " + causalityToken + " " + zoneId); + + if (causalityToken < 1) { + throw new IllegalArgumentException("causalityToken must be greater then zero [causalityToken=" + causalityToken + '"'); + } + + if (zoneId < DEFAULT_ZONE_ID) { + throw new IllegalArgumentException("zoneId cannot be a negative number [zoneId=" + zoneId + '"'); + } + + ConcurrentSkipListMap<Long, ZoneConfiguration> versionedCfg = zonesVersionedCfg.get(zoneId); + + // Get the latest configuration and configuration revision for a given causality token + Map.Entry<Long, ZoneConfiguration> zoneLastCfgEntry = versionedCfg.floorEntry(causalityToken); + + if (zoneLastCfgEntry == null) { + // It means that the zone does not exist on a given causality token. + throw new DistributionZoneNotFoundException(zoneId); + } + + long lastCfgRevision = zoneLastCfgEntry.getKey(); + + ZoneConfiguration zoneLastCfg = zoneLastCfgEntry.getValue(); + + String filter = zoneLastCfg.getFilter(); + + boolean isZoneRemoved = zoneLastCfg.getIsRemoved(); + + if (isZoneRemoved) { + // It means that the zone was removed on a given causality token. + throw new DistributionZoneNotFoundException(zoneId); + } + + // Get revisions of the last scale up and scale down event which triggered immediate data nodes recalculation. + IgniteBiTuple<Long, Long> revisions = getRevisionsOfLastScaleUpAndScaleDownEvents(causalityToken, zoneId); + long lastScaleUpRevision = revisions.get1(); + long lastScaleDownRevision = revisions.get2(); + + if (lastCfgRevision == versionedCfg.firstKey() + && lastCfgRevision >= lastScaleUpRevision + && lastCfgRevision >= lastScaleDownRevision + ) { + // It means that the zone was created but the data nodes value had not updated yet. + // So the data nodes value will be equals to the logical topology on the lastCfgRevision. + + Entry topologyEntry = msManager.getLocally(zonesLogicalTopologyKey(), zoneLastCfgEntry.getKey()); + + Set<NodeWithAttributes> logicalTopology = fromBytes(topologyEntry.value()); + + Set<Node> logicalTopologyNodes = logicalTopology.stream().map(n -> n.node()).collect(toSet()); + + Set<String> dataNodesNames = filterDataNodes(logicalTopologyNodes, filter, nodesAttributes); + + return dataNodesNames; + } + + LOG.info("+++++++ dataNodes lastScaleUpRevision " + lastScaleUpRevision); + LOG.info("+++++++ dataNodes lastScaleDownRevision " + lastScaleDownRevision); + + ZoneState zoneState = zonesState.get(zoneId); + + LOG.info("+++++++ dataNodes zoneState " + zoneState); + + ConcurrentSkipListMap<Long, Augmentation> subAugmentationMap = null; + + // On the data nodes recalculation we write new data nodes to the meta storage then clear the augmentation map. + // Therefore, first we need to read the augmentation map before it is cleared and then read the last data nodes value + // from the meta storage. + // The zoneState can be null if the zone was removed. + if (zoneState != null) { + subAugmentationMap = new ConcurrentSkipListMap<>(zoneState.topologyAugmentationMap() + .headMap(causalityToken, true)); + } + + // Search the revisions of zoneScaleUpChangeTriggerKey and zoneScaleDownChangeTriggerKey with value greater or equals + // to expected one. + long scaleUpDataNodesRevision = searchTriggerKey(lastScaleUpRevision, zoneId, zoneScaleUpChangeTriggerKey(zoneId)); + long scaleDownDataNodesRevision = searchTriggerKey(lastScaleDownRevision, zoneId, zoneScaleDownChangeTriggerKey(zoneId)); + + // Choose the highest revision. + long dataNodesRevision = max(causalityToken, max(scaleUpDataNodesRevision, scaleDownDataNodesRevision)); + + LOG.info("+++++++ dataNodes scaleUpDataNodesRevision " + scaleUpDataNodesRevision); + LOG.info("+++++++ dataNodes scaleDownDataNodesRevision " + scaleDownDataNodesRevision); + + // Read data nodes value from the meta storage on dataNodesRevision and associated trigger keys. + Entry dataNodesEntry = msManager.getLocally(zoneDataNodesKey(zoneId), dataNodesRevision); + Entry scaleUpChangeTriggerKey = msManager.getLocally(zoneScaleUpChangeTriggerKey(zoneId), dataNodesRevision); + Entry scaleDownChangeTriggerKey = msManager.getLocally(zoneScaleDownChangeTriggerKey(zoneId), dataNodesRevision); + + if (dataNodesEntry.value() == null) { + LOG.info("+++++++ dataNodes The zone was removed not idempotently"); + // The zone was removed. + // In this case it is impossible to find out the data nodes value idempotently. + return emptySet(); + } + + Set<Node> baseDataNodes = DistributionZonesUtil.dataNodes(fromBytes(dataNodesEntry.value())); + long scaleUpTriggerRevision = bytesToLong(scaleUpChangeTriggerKey.value()); + long scaleDownTriggerRevision = bytesToLong(scaleDownChangeTriggerKey.value()); + + LOG.info("+++++++ dataNodes scaleUpTriggerRevision " + scaleUpTriggerRevision); + LOG.info("+++++++ dataNodes scaleDownTriggerRevision " + scaleDownTriggerRevision); + + LOG.info("+++++++ dataNodes baseDataNodes " + baseDataNodes); + + Set<Node> finalDataNodes = new HashSet<>(baseDataNodes); + + LOG.info("+++++++ dataNodes subAugmentationMap " + subAugmentationMap); + + // If the subAugmentationMap is null then it means that the zone was removed. In this case all nodes from topologyAugmentationMap + // must be already written to the meta storage. + if (subAugmentationMap != null) { + // Update the data nodes set with pending data from augmentation map + subAugmentationMap.forEach((rev, augmentation) -> { + if (augmentation.addition() && rev > scaleUpTriggerRevision && rev <= lastScaleUpRevision) { + for (Node node : augmentation.nodes()) { + LOG.info("+++++++ dataNodes finalDataNodes.add " + node); + finalDataNodes.add(node); + } + } + + if (!augmentation.addition() && rev > scaleDownTriggerRevision && rev <= lastScaleDownRevision) { + for (Node node : augmentation.nodes()) { + LOG.info("+++++++ dataNodes finalDataNodes.remove " + node); + finalDataNodes.remove(node); + } + } + }); + } + + // Apply the filter to get the final data nodes set. + Set<String> result = filterDataNodes(finalDataNodes, filter, nodesAttributes); + + LOG.info("+++++++ dataNodes result " + result); + + return result; + } + + /** + * These revisions correspond to the last configuration and topology events after which need to wait for the data nodes recalculation. + * These events are: a zone creation, changing a scale up timer to immediate, changing a scale down timer to immediate, + * changing a filter, deleting a zone, topology changes with the adding nodes, topology changes with removing nodes. + * + * @param causalityToken causalityToken. + * @param zoneId zoneId. + * @return Revisions. + */ + private IgniteBiTuple<Long, Long> getRevisionsOfLastScaleUpAndScaleDownEvents( + long causalityToken, + int zoneId) { + IgniteBiTuple<Long, Long> scaleUpAndScaleDownConfigRevisions = getLastScaleUpAndScaleDownConfigRevisions(causalityToken, zoneId); + + IgniteBiTuple<Long, Long> scaleUpAndScaleDownTopologyRevisions = + getLastScaleUpAndScaleDownTopologyRevisions(causalityToken, zoneId); + + long lastScaleUpRevision = max(scaleUpAndScaleDownConfigRevisions.get1(), scaleUpAndScaleDownTopologyRevisions.get1()); + + long lastScaleDownRevision = max(scaleUpAndScaleDownConfigRevisions.get2(), scaleUpAndScaleDownTopologyRevisions.get2()); + + return new IgniteBiTuple<>(lastScaleUpRevision, lastScaleDownRevision); + } + + /** + * Get revisions of the latest configuration change events which trigger immediate recalculation of the data nodes value. + * + * @param causalityToken causalityToken. + * @param zoneId zoneId. + * @return Revisions. + */ + private IgniteBiTuple<Long, Long> getLastScaleUpAndScaleDownConfigRevisions( + long causalityToken, + int zoneId + ) { + ConcurrentSkipListMap<Long, ZoneConfiguration> versionedCfg = zonesVersionedCfg.get(zoneId); + + Iterator<Map.Entry<Long, ZoneConfiguration>> reversedIterator = versionedCfg.headMap(causalityToken, true) + .descendingMap().entrySet().iterator(); + + Map.Entry<Long, ZoneConfiguration> entryNewerCfg = null; + + long scaleUpRevision = 0; + long scaleDownRevision = 0; + + // Iterate over zone configurations from newest to oldest. + while (reversedIterator.hasNext()) { + Map.Entry<Long, ZoneConfiguration> entryOlderCfg = reversedIterator.next(); + + ZoneConfiguration olderCfg = entryOlderCfg.getValue(); + + if (entryNewerCfg != null) { + boolean isScaleUpImmediate = entryNewerCfg.getValue().getDataNodesAutoAdjustScaleUp() == IMMEDIATE_TIMER_VALUE; + boolean isScaleDownImmediate = entryNewerCfg.getValue().getDataNodesAutoAdjustScaleDown() == IMMEDIATE_TIMER_VALUE; + + ZoneConfiguration newerCfg = entryNewerCfg.getValue(); + + if (scaleUpRevision == 0 && olderCfg.getDataNodesAutoAdjustScaleUp() != newerCfg.getDataNodesAutoAdjustScaleUp() + && newerCfg.getDataNodesAutoAdjustScaleUp() == IMMEDIATE_TIMER_VALUE + && isScaleUpImmediate) { + scaleUpRevision = entryNewerCfg.getKey(); + } + + if (scaleDownRevision == 0 && olderCfg.getDataNodesAutoAdjustScaleDown() != newerCfg.getDataNodesAutoAdjustScaleDown() + && newerCfg.getDataNodesAutoAdjustScaleDown() == IMMEDIATE_TIMER_VALUE + && isScaleDownImmediate) { + scaleDownRevision = entryNewerCfg.getKey(); + } + + if (scaleUpRevision == 0 && !olderCfg.getFilter().equals(newerCfg.getFilter())) { + scaleUpRevision = entryNewerCfg.getKey(); + } + } + + if ((scaleUpRevision > 0) && (scaleDownRevision > 0)) { + break; + } + + entryNewerCfg = entryOlderCfg; + } + + // The case when there is only one configuration in the history. + if (entryNewerCfg != null) { + if (scaleUpRevision == 0) { + scaleUpRevision = entryNewerCfg.getKey(); + } + + if (scaleDownRevision == 0) { + scaleDownRevision = entryNewerCfg.getKey(); + } + } + + return new IgniteBiTuple<>(scaleUpRevision, scaleDownRevision); + } + + /** + * Get revisions of the latest topology event with added nodes and with removed nodes when the zone have + * immediate scale up and scale down timers. + * + * @param causalityToken causalityToken. + * @param zoneId zoneId. + * @return Revisions. + */ + private IgniteBiTuple<Long, Long> getLastScaleUpAndScaleDownTopologyRevisions(long causalityToken, int zoneId) { + Set<NodeWithAttributes> newerLogicalTopology; + + long newerTopologyRevision; + + Entry topologyEntry = msManager.getLocally(zonesLogicalTopologyKey(), causalityToken); + + long scaleUpTopologyRevision = 0; + long scaleDownTopologyRevision = 0; + + + if (!topologyEntry.empty()) { + byte[] newerLogicalTopologyBytes = topologyEntry.value(); + + newerLogicalTopology = fromBytes(newerLogicalTopologyBytes); + + newerTopologyRevision = topologyEntry.revision(); + + while ((scaleUpTopologyRevision == 0) || (scaleDownTopologyRevision == 0)) { + topologyEntry = msManager.getLocally(zonesLogicalTopologyKey(), newerTopologyRevision - 1); + + Set<NodeWithAttributes> olderLogicalTopology; + + if (topologyEntry.empty()) { + // If older topology is empty then it means that each topology changes were iterated + // so use empty set to compare it with the first topology. + olderLogicalTopology = emptySet(); + } else { + byte[] olderLogicalTopologyBytes = topologyEntry.value(); + + olderLogicalTopology = fromBytes(olderLogicalTopologyBytes); + } + + Set<NodeWithAttributes> finalNewerLogicalTopology = newerLogicalTopology; + + Set<Node> removedNodes = + olderLogicalTopology.stream() + .filter(node -> !finalNewerLogicalTopology.contains(node)) + .map(NodeWithAttributes::node) + .collect(toSet()); + + Set<Node> addedNodes = + newerLogicalTopology.stream() + .filter(node -> !olderLogicalTopology.contains(node)) + .map(NodeWithAttributes::node) + .collect(toSet()); + + Map.Entry<Long, ZoneConfiguration> zoneConfigurationEntry = zonesVersionedCfg.get(zoneId) + .floorEntry(newerTopologyRevision); + + if (zoneConfigurationEntry == null) { + break; + } + + ZoneConfiguration zoneCfg = zoneConfigurationEntry.getValue(); + + if (scaleUpTopologyRevision == 0 + && !addedNodes.isEmpty() + && zoneCfg.getDataNodesAutoAdjustScaleUp() == IMMEDIATE_TIMER_VALUE) { + scaleUpTopologyRevision = newerTopologyRevision; + } + + if (scaleDownTopologyRevision == 0 + && !removedNodes.isEmpty() + && zoneCfg.getDataNodesAutoAdjustScaleDown() == IMMEDIATE_TIMER_VALUE) { + scaleDownTopologyRevision = newerTopologyRevision; + } + + newerLogicalTopology = olderLogicalTopology; + + newerTopologyRevision = topologyEntry.revision(); + + if (topologyEntry.empty()) { + break; + } + } + } + + return new IgniteBiTuple<>(scaleUpTopologyRevision, scaleDownTopologyRevision); + } + + /** + * Search a value of zoneScaleUpChangeTriggerKey/zoneScaleDownChangeTriggerKey which equals or greater than scaleRevision. + * It iterates over the entries in the local meta storage. If there is an entry with a value equals to or greater than + * the scaleRevision, then it returns the revision of this entry. If there is no such entry then it returns zero. + * + * @param scaleRevision Scale revision. + * @param zoneId Zone id. + * @param triggerKey Trigger key. + * @return Revision. + */ + private long searchTriggerKey(Long scaleRevision, int zoneId, ByteArray triggerKey) { + System.out.println("searchTriggerKey " + scaleRevision + " " + zoneId); + + Entry lastEntry = msManager.getLocally(triggerKey, Long.MAX_VALUE); + + long upperRevision = max(lastEntry.revision(), scaleRevision); + + // Gets old entries from storage to check if the expected value was handled before watch listener was registered. + List<Entry> entryList = msManager.getLocally(triggerKey.bytes(), scaleRevision, upperRevision); + + for (Entry entry : entryList) { + + // scaleRevision is null if the zone was removed. + if (entry.value() == null) { + return entry.revision(); + } else { + long entryScaleRevision = bytesToLong(entry.value()); + + if (entryScaleRevision >= scaleRevision) { + return entry.revision(); + } + } + } + + return 0; + } + + /** + * causalityOnUpdateScaleUp. + * + * @param revision revision. + * @param zoneId zoneId. + * @param newScaleUp newScaleUp. + */ + public void causalityOnUpdateScaleUp(long revision, int zoneId, int newScaleUp) { + ConcurrentSkipListMap<Long, ZoneConfiguration> versionedCfg = zonesVersionedCfg.get(zoneId); + + ZoneConfiguration previousCfg = versionedCfg.floorEntry(revision).getValue(); + + ZoneConfiguration newCfg = new ZoneConfiguration(previousCfg).setDataNodesAutoAdjustScaleUp(newScaleUp); + + versionedCfg.put(revision, newCfg); + + vaultMgr.put(zoneVersionedConfigurationKey(zoneId), toBytes(versionedCfg)).join(); + } + + /** + * causalityOnUpdateScaleDown. + * + * @param revision revision. + * @param zoneId zoneId. + * @param newScaleDown newScaleDown. + */ + public void causalityOnUpdateScaleDown(long revision, int zoneId, int newScaleDown) { + ConcurrentSkipListMap<Long, ZoneConfiguration> versionedCfg = zonesVersionedCfg.get(zoneId); + + ZoneConfiguration previousCfg = versionedCfg.floorEntry(revision).getValue(); + + ZoneConfiguration newCfg = new ZoneConfiguration(previousCfg).setDataNodesAutoAdjustScaleDown(newScaleDown); + + versionedCfg.put(revision, newCfg); + + vaultMgr.put(zoneVersionedConfigurationKey(zoneId), toBytes(versionedCfg)).join(); + } + + /** + * onUpdateFilter. + * + * @param revision revision. + * @param zoneId zoneId. + * @param filter filter. + */ + public void onUpdateFilter(long revision, int zoneId, String filter) { + ConcurrentSkipListMap<Long, ZoneConfiguration> versionedCfg = zonesVersionedCfg.get(zoneId); + + ZoneConfiguration previousCfg = versionedCfg.floorEntry(revision).getValue(); + + ZoneConfiguration newCfg = new ZoneConfiguration(previousCfg).setFilter(filter); + + versionedCfg.put(revision, newCfg); + + vaultMgr.put(zoneVersionedConfigurationKey(zoneId), toBytes(versionedCfg)).join(); + } + + /** + * onCreateOrRestoreZoneState. + * + * @param revision revision. + * @param zoneId zoneId. + * @param zoneCreation zoneCreation. + * @param zone zone. + */ + public void onCreateOrRestoreZoneState(long revision, int zoneId, boolean zoneCreation, DistributionZoneView zone) { Review Comment: `zoneId` is redundant, we could retrieve it from `DistributionZoneView` ########## modules/distribution-zones/src/main/java/org/apache/ignite/internal/distributionzones/causalitydatanodes/CausalityDataNodesEngine.java: ########## @@ -0,0 +1,681 @@ +/* + * 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.ignite.internal.distributionzones.causalitydatanodes; + +import static java.lang.Math.max; +import static java.util.Collections.emptySet; +import static java.util.stream.Collectors.toSet; +import static org.apache.ignite.internal.distributionzones.DistributionZoneManager.DEFAULT_ZONE_ID; +import static org.apache.ignite.internal.distributionzones.DistributionZoneManager.IMMEDIATE_TIMER_VALUE; +import static org.apache.ignite.internal.distributionzones.DistributionZonesUtil.filterDataNodes; +import static org.apache.ignite.internal.distributionzones.DistributionZonesUtil.zoneDataNodesKey; +import static org.apache.ignite.internal.distributionzones.DistributionZonesUtil.zoneScaleDownChangeTriggerKey; +import static org.apache.ignite.internal.distributionzones.DistributionZonesUtil.zoneScaleUpChangeTriggerKey; +import static org.apache.ignite.internal.distributionzones.DistributionZonesUtil.zoneVersionedConfigurationKey; +import static org.apache.ignite.internal.distributionzones.DistributionZonesUtil.zonesLogicalTopologyKey; +import static org.apache.ignite.internal.util.ByteUtils.bytesToLong; +import static org.apache.ignite.internal.util.ByteUtils.fromBytes; +import static org.apache.ignite.internal.util.ByteUtils.toBytes; + +import java.io.Serializable; +import java.util.HashSet; +import java.util.Iterator; +import java.util.List; +import java.util.Map; +import java.util.Set; +import java.util.concurrent.ConcurrentHashMap; +import java.util.concurrent.ConcurrentSkipListMap; +import org.apache.ignite.internal.distributionzones.DistributionZoneManager.Augmentation; +import org.apache.ignite.internal.distributionzones.DistributionZoneManager.ZoneState; +import org.apache.ignite.internal.distributionzones.DistributionZonesUtil; +import org.apache.ignite.internal.distributionzones.Node; +import org.apache.ignite.internal.distributionzones.NodeWithAttributes; +import org.apache.ignite.internal.distributionzones.configuration.DistributionZoneView; +import org.apache.ignite.internal.distributionzones.rebalance.DistributionZoneRebalanceEngine; +import org.apache.ignite.internal.logger.IgniteLogger; +import org.apache.ignite.internal.logger.Loggers; +import org.apache.ignite.internal.metastorage.Entry; +import org.apache.ignite.internal.metastorage.MetaStorageManager; +import org.apache.ignite.internal.vault.VaultEntry; +import org.apache.ignite.internal.vault.VaultManager; +import org.apache.ignite.lang.ByteArray; +import org.apache.ignite.lang.DistributionZoneNotFoundException; +import org.apache.ignite.lang.IgniteBiTuple; + +/** + * Causality data nodes manager. + */ +public class CausalityDataNodesEngine { + /** The logger. */ + private static final IgniteLogger LOG = Loggers.forClass(DistributionZoneRebalanceEngine.class); + + /** Meta Storage manager. */ + private final MetaStorageManager msManager; + + /** Vault manager. */ + private final VaultManager vaultMgr; + + /** + * Map with states for distribution zones. States are needed to track nodes that we want to add or remove from the data nodes, + * schedule and stop scale up and scale down processes. + */ + private final Map<Integer, ZoneState> zonesState; + + /** + * zoneId -> (revision -> zoneConfiguration). + */ + private final ConcurrentHashMap<Integer, ConcurrentSkipListMap<Long, ZoneConfiguration>> zonesVersionedCfg; + + /** + * Local mapping of {@code nodeId} -> node's attributes, where {@code nodeId} is a node id, that changes between restarts. + * This map is updated every time we receive a topology event in a {@code topologyWatchListener}. + * TODO: https://issues.apache.org/jira/browse/IGNITE-19491 properly clean up this map + * + * @see <a href="https://github.com/apache/ignite-3/blob/main/modules/distribution-zones/tech-notes/filters.md";>Filter documentation</a> + */ + private Map<String, Map<String, String>> nodesAttributes; + + /** + * The constructor. + * + * @param msManager msManager. + * @param vaultMgr vaultMgr. + * @param zonesState zonesState. + * @param nodesAttributes nodesAttributes. + */ + public CausalityDataNodesEngine( + MetaStorageManager msManager, + VaultManager vaultMgr, + Map<Integer, ZoneState> zonesState, + Map<String, Map<String, String>> nodesAttributes + ) { + this.msManager = msManager; + this.vaultMgr = vaultMgr; + this.zonesState = zonesState; + this.nodesAttributes = nodesAttributes; + + zonesVersionedCfg = new ConcurrentHashMap<>(); + } + + /** + * Gets data nodes of the zone using causality token. + * + * <p>Return data nodes or throw the {@link DistributionZoneNotFoundException} if the zone with the provided {@code zoneId} + * does not exist. + * + * @param causalityToken Causality token. + * @param zoneId Zone id. + * @return The future which will be completed with data nodes for the zoneId or with exception. + */ + public Set<String> dataNodes(long causalityToken, int zoneId) { + LOG.info("+++++++ dataNodes " + causalityToken + " " + zoneId); + + if (causalityToken < 1) { + throw new IllegalArgumentException("causalityToken must be greater then zero [causalityToken=" + causalityToken + '"'); + } + + if (zoneId < DEFAULT_ZONE_ID) { + throw new IllegalArgumentException("zoneId cannot be a negative number [zoneId=" + zoneId + '"'); + } + + ConcurrentSkipListMap<Long, ZoneConfiguration> versionedCfg = zonesVersionedCfg.get(zoneId); + + // Get the latest configuration and configuration revision for a given causality token + Map.Entry<Long, ZoneConfiguration> zoneLastCfgEntry = versionedCfg.floorEntry(causalityToken); + + if (zoneLastCfgEntry == null) { + // It means that the zone does not exist on a given causality token. + throw new DistributionZoneNotFoundException(zoneId); + } + + long lastCfgRevision = zoneLastCfgEntry.getKey(); + + ZoneConfiguration zoneLastCfg = zoneLastCfgEntry.getValue(); + + String filter = zoneLastCfg.getFilter(); + + boolean isZoneRemoved = zoneLastCfg.getIsRemoved(); + + if (isZoneRemoved) { + // It means that the zone was removed on a given causality token. + throw new DistributionZoneNotFoundException(zoneId); + } + + // Get revisions of the last scale up and scale down event which triggered immediate data nodes recalculation. + IgniteBiTuple<Long, Long> revisions = getRevisionsOfLastScaleUpAndScaleDownEvents(causalityToken, zoneId); + long lastScaleUpRevision = revisions.get1(); + long lastScaleDownRevision = revisions.get2(); + + if (lastCfgRevision == versionedCfg.firstKey() + && lastCfgRevision >= lastScaleUpRevision + && lastCfgRevision >= lastScaleDownRevision + ) { + // It means that the zone was created but the data nodes value had not updated yet. + // So the data nodes value will be equals to the logical topology on the lastCfgRevision. + + Entry topologyEntry = msManager.getLocally(zonesLogicalTopologyKey(), zoneLastCfgEntry.getKey()); + + Set<NodeWithAttributes> logicalTopology = fromBytes(topologyEntry.value()); + + Set<Node> logicalTopologyNodes = logicalTopology.stream().map(n -> n.node()).collect(toSet()); + + Set<String> dataNodesNames = filterDataNodes(logicalTopologyNodes, filter, nodesAttributes); + + return dataNodesNames; + } + + LOG.info("+++++++ dataNodes lastScaleUpRevision " + lastScaleUpRevision); + LOG.info("+++++++ dataNodes lastScaleDownRevision " + lastScaleDownRevision); + + ZoneState zoneState = zonesState.get(zoneId); + + LOG.info("+++++++ dataNodes zoneState " + zoneState); + + ConcurrentSkipListMap<Long, Augmentation> subAugmentationMap = null; + + // On the data nodes recalculation we write new data nodes to the meta storage then clear the augmentation map. + // Therefore, first we need to read the augmentation map before it is cleared and then read the last data nodes value + // from the meta storage. + // The zoneState can be null if the zone was removed. + if (zoneState != null) { + subAugmentationMap = new ConcurrentSkipListMap<>(zoneState.topologyAugmentationMap() + .headMap(causalityToken, true)); + } + + // Search the revisions of zoneScaleUpChangeTriggerKey and zoneScaleDownChangeTriggerKey with value greater or equals + // to expected one. + long scaleUpDataNodesRevision = searchTriggerKey(lastScaleUpRevision, zoneId, zoneScaleUpChangeTriggerKey(zoneId)); + long scaleDownDataNodesRevision = searchTriggerKey(lastScaleDownRevision, zoneId, zoneScaleDownChangeTriggerKey(zoneId)); + + // Choose the highest revision. + long dataNodesRevision = max(causalityToken, max(scaleUpDataNodesRevision, scaleDownDataNodesRevision)); + + LOG.info("+++++++ dataNodes scaleUpDataNodesRevision " + scaleUpDataNodesRevision); + LOG.info("+++++++ dataNodes scaleDownDataNodesRevision " + scaleDownDataNodesRevision); + + // Read data nodes value from the meta storage on dataNodesRevision and associated trigger keys. + Entry dataNodesEntry = msManager.getLocally(zoneDataNodesKey(zoneId), dataNodesRevision); + Entry scaleUpChangeTriggerKey = msManager.getLocally(zoneScaleUpChangeTriggerKey(zoneId), dataNodesRevision); + Entry scaleDownChangeTriggerKey = msManager.getLocally(zoneScaleDownChangeTriggerKey(zoneId), dataNodesRevision); + + if (dataNodesEntry.value() == null) { + LOG.info("+++++++ dataNodes The zone was removed not idempotently"); + // The zone was removed. + // In this case it is impossible to find out the data nodes value idempotently. + return emptySet(); + } + + Set<Node> baseDataNodes = DistributionZonesUtil.dataNodes(fromBytes(dataNodesEntry.value())); + long scaleUpTriggerRevision = bytesToLong(scaleUpChangeTriggerKey.value()); + long scaleDownTriggerRevision = bytesToLong(scaleDownChangeTriggerKey.value()); + + LOG.info("+++++++ dataNodes scaleUpTriggerRevision " + scaleUpTriggerRevision); + LOG.info("+++++++ dataNodes scaleDownTriggerRevision " + scaleDownTriggerRevision); + + LOG.info("+++++++ dataNodes baseDataNodes " + baseDataNodes); + + Set<Node> finalDataNodes = new HashSet<>(baseDataNodes); + + LOG.info("+++++++ dataNodes subAugmentationMap " + subAugmentationMap); + + // If the subAugmentationMap is null then it means that the zone was removed. In this case all nodes from topologyAugmentationMap + // must be already written to the meta storage. + if (subAugmentationMap != null) { + // Update the data nodes set with pending data from augmentation map + subAugmentationMap.forEach((rev, augmentation) -> { + if (augmentation.addition() && rev > scaleUpTriggerRevision && rev <= lastScaleUpRevision) { + for (Node node : augmentation.nodes()) { + LOG.info("+++++++ dataNodes finalDataNodes.add " + node); + finalDataNodes.add(node); + } + } + + if (!augmentation.addition() && rev > scaleDownTriggerRevision && rev <= lastScaleDownRevision) { + for (Node node : augmentation.nodes()) { + LOG.info("+++++++ dataNodes finalDataNodes.remove " + node); + finalDataNodes.remove(node); + } + } + }); + } + + // Apply the filter to get the final data nodes set. + Set<String> result = filterDataNodes(finalDataNodes, filter, nodesAttributes); + + LOG.info("+++++++ dataNodes result " + result); + + return result; + } + + /** + * These revisions correspond to the last configuration and topology events after which need to wait for the data nodes recalculation. + * These events are: a zone creation, changing a scale up timer to immediate, changing a scale down timer to immediate, + * changing a filter, deleting a zone, topology changes with the adding nodes, topology changes with removing nodes. + * + * @param causalityToken causalityToken. + * @param zoneId zoneId. + * @return Revisions. + */ + private IgniteBiTuple<Long, Long> getRevisionsOfLastScaleUpAndScaleDownEvents( + long causalityToken, + int zoneId) { + IgniteBiTuple<Long, Long> scaleUpAndScaleDownConfigRevisions = getLastScaleUpAndScaleDownConfigRevisions(causalityToken, zoneId); + + IgniteBiTuple<Long, Long> scaleUpAndScaleDownTopologyRevisions = + getLastScaleUpAndScaleDownTopologyRevisions(causalityToken, zoneId); + + long lastScaleUpRevision = max(scaleUpAndScaleDownConfigRevisions.get1(), scaleUpAndScaleDownTopologyRevisions.get1()); + + long lastScaleDownRevision = max(scaleUpAndScaleDownConfigRevisions.get2(), scaleUpAndScaleDownTopologyRevisions.get2()); + + return new IgniteBiTuple<>(lastScaleUpRevision, lastScaleDownRevision); + } + + /** + * Get revisions of the latest configuration change events which trigger immediate recalculation of the data nodes value. + * + * @param causalityToken causalityToken. + * @param zoneId zoneId. + * @return Revisions. + */ + private IgniteBiTuple<Long, Long> getLastScaleUpAndScaleDownConfigRevisions( + long causalityToken, + int zoneId + ) { + ConcurrentSkipListMap<Long, ZoneConfiguration> versionedCfg = zonesVersionedCfg.get(zoneId); + + Iterator<Map.Entry<Long, ZoneConfiguration>> reversedIterator = versionedCfg.headMap(causalityToken, true) + .descendingMap().entrySet().iterator(); + + Map.Entry<Long, ZoneConfiguration> entryNewerCfg = null; + + long scaleUpRevision = 0; + long scaleDownRevision = 0; + + // Iterate over zone configurations from newest to oldest. + while (reversedIterator.hasNext()) { + Map.Entry<Long, ZoneConfiguration> entryOlderCfg = reversedIterator.next(); + + ZoneConfiguration olderCfg = entryOlderCfg.getValue(); + + if (entryNewerCfg != null) { + boolean isScaleUpImmediate = entryNewerCfg.getValue().getDataNodesAutoAdjustScaleUp() == IMMEDIATE_TIMER_VALUE; + boolean isScaleDownImmediate = entryNewerCfg.getValue().getDataNodesAutoAdjustScaleDown() == IMMEDIATE_TIMER_VALUE; + + ZoneConfiguration newerCfg = entryNewerCfg.getValue(); + + if (scaleUpRevision == 0 && olderCfg.getDataNodesAutoAdjustScaleUp() != newerCfg.getDataNodesAutoAdjustScaleUp() Review Comment: this could be simplified, you check for `isScaleUpImmediate` twice ########## modules/distribution-zones/src/main/java/org/apache/ignite/internal/distributionzones/causalitydatanodes/CausalityDataNodesEngine.java: ########## @@ -0,0 +1,681 @@ +/* + * 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.ignite.internal.distributionzones.causalitydatanodes; + +import static java.lang.Math.max; +import static java.util.Collections.emptySet; +import static java.util.stream.Collectors.toSet; +import static org.apache.ignite.internal.distributionzones.DistributionZoneManager.DEFAULT_ZONE_ID; +import static org.apache.ignite.internal.distributionzones.DistributionZoneManager.IMMEDIATE_TIMER_VALUE; +import static org.apache.ignite.internal.distributionzones.DistributionZonesUtil.filterDataNodes; +import static org.apache.ignite.internal.distributionzones.DistributionZonesUtil.zoneDataNodesKey; +import static org.apache.ignite.internal.distributionzones.DistributionZonesUtil.zoneScaleDownChangeTriggerKey; +import static org.apache.ignite.internal.distributionzones.DistributionZonesUtil.zoneScaleUpChangeTriggerKey; +import static org.apache.ignite.internal.distributionzones.DistributionZonesUtil.zoneVersionedConfigurationKey; +import static org.apache.ignite.internal.distributionzones.DistributionZonesUtil.zonesLogicalTopologyKey; +import static org.apache.ignite.internal.util.ByteUtils.bytesToLong; +import static org.apache.ignite.internal.util.ByteUtils.fromBytes; +import static org.apache.ignite.internal.util.ByteUtils.toBytes; + +import java.io.Serializable; +import java.util.HashSet; +import java.util.Iterator; +import java.util.List; +import java.util.Map; +import java.util.Set; +import java.util.concurrent.ConcurrentHashMap; +import java.util.concurrent.ConcurrentSkipListMap; +import org.apache.ignite.internal.distributionzones.DistributionZoneManager.Augmentation; +import org.apache.ignite.internal.distributionzones.DistributionZoneManager.ZoneState; +import org.apache.ignite.internal.distributionzones.DistributionZonesUtil; +import org.apache.ignite.internal.distributionzones.Node; +import org.apache.ignite.internal.distributionzones.NodeWithAttributes; +import org.apache.ignite.internal.distributionzones.configuration.DistributionZoneView; +import org.apache.ignite.internal.distributionzones.rebalance.DistributionZoneRebalanceEngine; +import org.apache.ignite.internal.logger.IgniteLogger; +import org.apache.ignite.internal.logger.Loggers; +import org.apache.ignite.internal.metastorage.Entry; +import org.apache.ignite.internal.metastorage.MetaStorageManager; +import org.apache.ignite.internal.vault.VaultEntry; +import org.apache.ignite.internal.vault.VaultManager; +import org.apache.ignite.lang.ByteArray; +import org.apache.ignite.lang.DistributionZoneNotFoundException; +import org.apache.ignite.lang.IgniteBiTuple; + +/** + * Causality data nodes manager. + */ +public class CausalityDataNodesEngine { + /** The logger. */ + private static final IgniteLogger LOG = Loggers.forClass(DistributionZoneRebalanceEngine.class); + + /** Meta Storage manager. */ + private final MetaStorageManager msManager; + + /** Vault manager. */ + private final VaultManager vaultMgr; + + /** + * Map with states for distribution zones. States are needed to track nodes that we want to add or remove from the data nodes, + * schedule and stop scale up and scale down processes. + */ + private final Map<Integer, ZoneState> zonesState; + + /** + * zoneId -> (revision -> zoneConfiguration). + */ + private final ConcurrentHashMap<Integer, ConcurrentSkipListMap<Long, ZoneConfiguration>> zonesVersionedCfg; + + /** + * Local mapping of {@code nodeId} -> node's attributes, where {@code nodeId} is a node id, that changes between restarts. + * This map is updated every time we receive a topology event in a {@code topologyWatchListener}. + * TODO: https://issues.apache.org/jira/browse/IGNITE-19491 properly clean up this map + * + * @see <a href="https://github.com/apache/ignite-3/blob/main/modules/distribution-zones/tech-notes/filters.md";>Filter documentation</a> + */ + private Map<String, Map<String, String>> nodesAttributes; + + /** + * The constructor. + * + * @param msManager msManager. + * @param vaultMgr vaultMgr. + * @param zonesState zonesState. + * @param nodesAttributes nodesAttributes. + */ + public CausalityDataNodesEngine( + MetaStorageManager msManager, + VaultManager vaultMgr, + Map<Integer, ZoneState> zonesState, + Map<String, Map<String, String>> nodesAttributes + ) { + this.msManager = msManager; + this.vaultMgr = vaultMgr; + this.zonesState = zonesState; + this.nodesAttributes = nodesAttributes; + + zonesVersionedCfg = new ConcurrentHashMap<>(); + } + + /** + * Gets data nodes of the zone using causality token. + * + * <p>Return data nodes or throw the {@link DistributionZoneNotFoundException} if the zone with the provided {@code zoneId} + * does not exist. + * + * @param causalityToken Causality token. + * @param zoneId Zone id. + * @return The future which will be completed with data nodes for the zoneId or with exception. + */ + public Set<String> dataNodes(long causalityToken, int zoneId) { + LOG.info("+++++++ dataNodes " + causalityToken + " " + zoneId); + + if (causalityToken < 1) { + throw new IllegalArgumentException("causalityToken must be greater then zero [causalityToken=" + causalityToken + '"'); + } + + if (zoneId < DEFAULT_ZONE_ID) { + throw new IllegalArgumentException("zoneId cannot be a negative number [zoneId=" + zoneId + '"'); + } + + ConcurrentSkipListMap<Long, ZoneConfiguration> versionedCfg = zonesVersionedCfg.get(zoneId); + + // Get the latest configuration and configuration revision for a given causality token + Map.Entry<Long, ZoneConfiguration> zoneLastCfgEntry = versionedCfg.floorEntry(causalityToken); + + if (zoneLastCfgEntry == null) { + // It means that the zone does not exist on a given causality token. + throw new DistributionZoneNotFoundException(zoneId); + } + + long lastCfgRevision = zoneLastCfgEntry.getKey(); + + ZoneConfiguration zoneLastCfg = zoneLastCfgEntry.getValue(); + + String filter = zoneLastCfg.getFilter(); + + boolean isZoneRemoved = zoneLastCfg.getIsRemoved(); + + if (isZoneRemoved) { + // It means that the zone was removed on a given causality token. + throw new DistributionZoneNotFoundException(zoneId); + } + + // Get revisions of the last scale up and scale down event which triggered immediate data nodes recalculation. + IgniteBiTuple<Long, Long> revisions = getRevisionsOfLastScaleUpAndScaleDownEvents(causalityToken, zoneId); + long lastScaleUpRevision = revisions.get1(); + long lastScaleDownRevision = revisions.get2(); + + if (lastCfgRevision == versionedCfg.firstKey() + && lastCfgRevision >= lastScaleUpRevision + && lastCfgRevision >= lastScaleDownRevision + ) { + // It means that the zone was created but the data nodes value had not updated yet. + // So the data nodes value will be equals to the logical topology on the lastCfgRevision. + + Entry topologyEntry = msManager.getLocally(zonesLogicalTopologyKey(), zoneLastCfgEntry.getKey()); + + Set<NodeWithAttributes> logicalTopology = fromBytes(topologyEntry.value()); + + Set<Node> logicalTopologyNodes = logicalTopology.stream().map(n -> n.node()).collect(toSet()); + + Set<String> dataNodesNames = filterDataNodes(logicalTopologyNodes, filter, nodesAttributes); + + return dataNodesNames; + } + + LOG.info("+++++++ dataNodes lastScaleUpRevision " + lastScaleUpRevision); + LOG.info("+++++++ dataNodes lastScaleDownRevision " + lastScaleDownRevision); + + ZoneState zoneState = zonesState.get(zoneId); + + LOG.info("+++++++ dataNodes zoneState " + zoneState); + + ConcurrentSkipListMap<Long, Augmentation> subAugmentationMap = null; + + // On the data nodes recalculation we write new data nodes to the meta storage then clear the augmentation map. + // Therefore, first we need to read the augmentation map before it is cleared and then read the last data nodes value + // from the meta storage. + // The zoneState can be null if the zone was removed. + if (zoneState != null) { + subAugmentationMap = new ConcurrentSkipListMap<>(zoneState.topologyAugmentationMap() + .headMap(causalityToken, true)); + } + + // Search the revisions of zoneScaleUpChangeTriggerKey and zoneScaleDownChangeTriggerKey with value greater or equals + // to expected one. + long scaleUpDataNodesRevision = searchTriggerKey(lastScaleUpRevision, zoneId, zoneScaleUpChangeTriggerKey(zoneId)); + long scaleDownDataNodesRevision = searchTriggerKey(lastScaleDownRevision, zoneId, zoneScaleDownChangeTriggerKey(zoneId)); + + // Choose the highest revision. + long dataNodesRevision = max(causalityToken, max(scaleUpDataNodesRevision, scaleDownDataNodesRevision)); + + LOG.info("+++++++ dataNodes scaleUpDataNodesRevision " + scaleUpDataNodesRevision); + LOG.info("+++++++ dataNodes scaleDownDataNodesRevision " + scaleDownDataNodesRevision); + + // Read data nodes value from the meta storage on dataNodesRevision and associated trigger keys. + Entry dataNodesEntry = msManager.getLocally(zoneDataNodesKey(zoneId), dataNodesRevision); + Entry scaleUpChangeTriggerKey = msManager.getLocally(zoneScaleUpChangeTriggerKey(zoneId), dataNodesRevision); + Entry scaleDownChangeTriggerKey = msManager.getLocally(zoneScaleDownChangeTriggerKey(zoneId), dataNodesRevision); + + if (dataNodesEntry.value() == null) { + LOG.info("+++++++ dataNodes The zone was removed not idempotently"); + // The zone was removed. + // In this case it is impossible to find out the data nodes value idempotently. + return emptySet(); + } + + Set<Node> baseDataNodes = DistributionZonesUtil.dataNodes(fromBytes(dataNodesEntry.value())); + long scaleUpTriggerRevision = bytesToLong(scaleUpChangeTriggerKey.value()); + long scaleDownTriggerRevision = bytesToLong(scaleDownChangeTriggerKey.value()); + + LOG.info("+++++++ dataNodes scaleUpTriggerRevision " + scaleUpTriggerRevision); + LOG.info("+++++++ dataNodes scaleDownTriggerRevision " + scaleDownTriggerRevision); + + LOG.info("+++++++ dataNodes baseDataNodes " + baseDataNodes); + + Set<Node> finalDataNodes = new HashSet<>(baseDataNodes); + + LOG.info("+++++++ dataNodes subAugmentationMap " + subAugmentationMap); + + // If the subAugmentationMap is null then it means that the zone was removed. In this case all nodes from topologyAugmentationMap + // must be already written to the meta storage. + if (subAugmentationMap != null) { + // Update the data nodes set with pending data from augmentation map + subAugmentationMap.forEach((rev, augmentation) -> { + if (augmentation.addition() && rev > scaleUpTriggerRevision && rev <= lastScaleUpRevision) { + for (Node node : augmentation.nodes()) { + LOG.info("+++++++ dataNodes finalDataNodes.add " + node); + finalDataNodes.add(node); + } + } + + if (!augmentation.addition() && rev > scaleDownTriggerRevision && rev <= lastScaleDownRevision) { + for (Node node : augmentation.nodes()) { + LOG.info("+++++++ dataNodes finalDataNodes.remove " + node); + finalDataNodes.remove(node); + } + } + }); + } + + // Apply the filter to get the final data nodes set. + Set<String> result = filterDataNodes(finalDataNodes, filter, nodesAttributes); + + LOG.info("+++++++ dataNodes result " + result); + + return result; + } + + /** + * These revisions correspond to the last configuration and topology events after which need to wait for the data nodes recalculation. + * These events are: a zone creation, changing a scale up timer to immediate, changing a scale down timer to immediate, + * changing a filter, deleting a zone, topology changes with the adding nodes, topology changes with removing nodes. + * + * @param causalityToken causalityToken. + * @param zoneId zoneId. + * @return Revisions. + */ + private IgniteBiTuple<Long, Long> getRevisionsOfLastScaleUpAndScaleDownEvents( Review Comment: Please, do not use `IgniteBiTuple`, let's have two methods to retrieve revisions ########## modules/distribution-zones/src/main/java/org/apache/ignite/internal/distributionzones/causalitydatanodes/CausalityDataNodesEngine.java: ########## @@ -0,0 +1,681 @@ +/* + * 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.ignite.internal.distributionzones.causalitydatanodes; + +import static java.lang.Math.max; +import static java.util.Collections.emptySet; +import static java.util.stream.Collectors.toSet; +import static org.apache.ignite.internal.distributionzones.DistributionZoneManager.DEFAULT_ZONE_ID; +import static org.apache.ignite.internal.distributionzones.DistributionZoneManager.IMMEDIATE_TIMER_VALUE; +import static org.apache.ignite.internal.distributionzones.DistributionZonesUtil.filterDataNodes; +import static org.apache.ignite.internal.distributionzones.DistributionZonesUtil.zoneDataNodesKey; +import static org.apache.ignite.internal.distributionzones.DistributionZonesUtil.zoneScaleDownChangeTriggerKey; +import static org.apache.ignite.internal.distributionzones.DistributionZonesUtil.zoneScaleUpChangeTriggerKey; +import static org.apache.ignite.internal.distributionzones.DistributionZonesUtil.zoneVersionedConfigurationKey; +import static org.apache.ignite.internal.distributionzones.DistributionZonesUtil.zonesLogicalTopologyKey; +import static org.apache.ignite.internal.util.ByteUtils.bytesToLong; +import static org.apache.ignite.internal.util.ByteUtils.fromBytes; +import static org.apache.ignite.internal.util.ByteUtils.toBytes; + +import java.io.Serializable; +import java.util.HashSet; +import java.util.Iterator; +import java.util.List; +import java.util.Map; +import java.util.Set; +import java.util.concurrent.ConcurrentHashMap; +import java.util.concurrent.ConcurrentSkipListMap; +import org.apache.ignite.internal.distributionzones.DistributionZoneManager.Augmentation; +import org.apache.ignite.internal.distributionzones.DistributionZoneManager.ZoneState; +import org.apache.ignite.internal.distributionzones.DistributionZonesUtil; +import org.apache.ignite.internal.distributionzones.Node; +import org.apache.ignite.internal.distributionzones.NodeWithAttributes; +import org.apache.ignite.internal.distributionzones.configuration.DistributionZoneView; +import org.apache.ignite.internal.distributionzones.rebalance.DistributionZoneRebalanceEngine; +import org.apache.ignite.internal.logger.IgniteLogger; +import org.apache.ignite.internal.logger.Loggers; +import org.apache.ignite.internal.metastorage.Entry; +import org.apache.ignite.internal.metastorage.MetaStorageManager; +import org.apache.ignite.internal.vault.VaultEntry; +import org.apache.ignite.internal.vault.VaultManager; +import org.apache.ignite.lang.ByteArray; +import org.apache.ignite.lang.DistributionZoneNotFoundException; +import org.apache.ignite.lang.IgniteBiTuple; + +/** + * Causality data nodes manager. + */ +public class CausalityDataNodesEngine { + /** The logger. */ + private static final IgniteLogger LOG = Loggers.forClass(DistributionZoneRebalanceEngine.class); + + /** Meta Storage manager. */ + private final MetaStorageManager msManager; + + /** Vault manager. */ + private final VaultManager vaultMgr; + + /** + * Map with states for distribution zones. States are needed to track nodes that we want to add or remove from the data nodes, + * schedule and stop scale up and scale down processes. + */ + private final Map<Integer, ZoneState> zonesState; + + /** + * zoneId -> (revision -> zoneConfiguration). + */ + private final ConcurrentHashMap<Integer, ConcurrentSkipListMap<Long, ZoneConfiguration>> zonesVersionedCfg; + + /** + * Local mapping of {@code nodeId} -> node's attributes, where {@code nodeId} is a node id, that changes between restarts. + * This map is updated every time we receive a topology event in a {@code topologyWatchListener}. + * TODO: https://issues.apache.org/jira/browse/IGNITE-19491 properly clean up this map + * + * @see <a href="https://github.com/apache/ignite-3/blob/main/modules/distribution-zones/tech-notes/filters.md";>Filter documentation</a> + */ + private Map<String, Map<String, String>> nodesAttributes; + + /** + * The constructor. + * + * @param msManager msManager. + * @param vaultMgr vaultMgr. + * @param zonesState zonesState. + * @param nodesAttributes nodesAttributes. + */ + public CausalityDataNodesEngine( + MetaStorageManager msManager, + VaultManager vaultMgr, + Map<Integer, ZoneState> zonesState, + Map<String, Map<String, String>> nodesAttributes + ) { + this.msManager = msManager; + this.vaultMgr = vaultMgr; + this.zonesState = zonesState; + this.nodesAttributes = nodesAttributes; + + zonesVersionedCfg = new ConcurrentHashMap<>(); + } + + /** + * Gets data nodes of the zone using causality token. + * + * <p>Return data nodes or throw the {@link DistributionZoneNotFoundException} if the zone with the provided {@code zoneId} + * does not exist. + * + * @param causalityToken Causality token. + * @param zoneId Zone id. + * @return The future which will be completed with data nodes for the zoneId or with exception. + */ + public Set<String> dataNodes(long causalityToken, int zoneId) { + LOG.info("+++++++ dataNodes " + causalityToken + " " + zoneId); + + if (causalityToken < 1) { + throw new IllegalArgumentException("causalityToken must be greater then zero [causalityToken=" + causalityToken + '"'); + } + + if (zoneId < DEFAULT_ZONE_ID) { + throw new IllegalArgumentException("zoneId cannot be a negative number [zoneId=" + zoneId + '"'); + } + + ConcurrentSkipListMap<Long, ZoneConfiguration> versionedCfg = zonesVersionedCfg.get(zoneId); + + // Get the latest configuration and configuration revision for a given causality token + Map.Entry<Long, ZoneConfiguration> zoneLastCfgEntry = versionedCfg.floorEntry(causalityToken); + + if (zoneLastCfgEntry == null) { + // It means that the zone does not exist on a given causality token. + throw new DistributionZoneNotFoundException(zoneId); + } + + long lastCfgRevision = zoneLastCfgEntry.getKey(); + + ZoneConfiguration zoneLastCfg = zoneLastCfgEntry.getValue(); + + String filter = zoneLastCfg.getFilter(); + + boolean isZoneRemoved = zoneLastCfg.getIsRemoved(); + + if (isZoneRemoved) { + // It means that the zone was removed on a given causality token. + throw new DistributionZoneNotFoundException(zoneId); + } + + // Get revisions of the last scale up and scale down event which triggered immediate data nodes recalculation. + IgniteBiTuple<Long, Long> revisions = getRevisionsOfLastScaleUpAndScaleDownEvents(causalityToken, zoneId); + long lastScaleUpRevision = revisions.get1(); + long lastScaleDownRevision = revisions.get2(); + + if (lastCfgRevision == versionedCfg.firstKey() + && lastCfgRevision >= lastScaleUpRevision + && lastCfgRevision >= lastScaleDownRevision + ) { + // It means that the zone was created but the data nodes value had not updated yet. + // So the data nodes value will be equals to the logical topology on the lastCfgRevision. + + Entry topologyEntry = msManager.getLocally(zonesLogicalTopologyKey(), zoneLastCfgEntry.getKey()); + + Set<NodeWithAttributes> logicalTopology = fromBytes(topologyEntry.value()); + + Set<Node> logicalTopologyNodes = logicalTopology.stream().map(n -> n.node()).collect(toSet()); + + Set<String> dataNodesNames = filterDataNodes(logicalTopologyNodes, filter, nodesAttributes); + + return dataNodesNames; + } + + LOG.info("+++++++ dataNodes lastScaleUpRevision " + lastScaleUpRevision); + LOG.info("+++++++ dataNodes lastScaleDownRevision " + lastScaleDownRevision); + + ZoneState zoneState = zonesState.get(zoneId); + + LOG.info("+++++++ dataNodes zoneState " + zoneState); + + ConcurrentSkipListMap<Long, Augmentation> subAugmentationMap = null; + + // On the data nodes recalculation we write new data nodes to the meta storage then clear the augmentation map. + // Therefore, first we need to read the augmentation map before it is cleared and then read the last data nodes value + // from the meta storage. + // The zoneState can be null if the zone was removed. + if (zoneState != null) { + subAugmentationMap = new ConcurrentSkipListMap<>(zoneState.topologyAugmentationMap() + .headMap(causalityToken, true)); + } + + // Search the revisions of zoneScaleUpChangeTriggerKey and zoneScaleDownChangeTriggerKey with value greater or equals + // to expected one. + long scaleUpDataNodesRevision = searchTriggerKey(lastScaleUpRevision, zoneId, zoneScaleUpChangeTriggerKey(zoneId)); + long scaleDownDataNodesRevision = searchTriggerKey(lastScaleDownRevision, zoneId, zoneScaleDownChangeTriggerKey(zoneId)); + + // Choose the highest revision. + long dataNodesRevision = max(causalityToken, max(scaleUpDataNodesRevision, scaleDownDataNodesRevision)); + + LOG.info("+++++++ dataNodes scaleUpDataNodesRevision " + scaleUpDataNodesRevision); + LOG.info("+++++++ dataNodes scaleDownDataNodesRevision " + scaleDownDataNodesRevision); + + // Read data nodes value from the meta storage on dataNodesRevision and associated trigger keys. + Entry dataNodesEntry = msManager.getLocally(zoneDataNodesKey(zoneId), dataNodesRevision); + Entry scaleUpChangeTriggerKey = msManager.getLocally(zoneScaleUpChangeTriggerKey(zoneId), dataNodesRevision); + Entry scaleDownChangeTriggerKey = msManager.getLocally(zoneScaleDownChangeTriggerKey(zoneId), dataNodesRevision); + + if (dataNodesEntry.value() == null) { + LOG.info("+++++++ dataNodes The zone was removed not idempotently"); + // The zone was removed. + // In this case it is impossible to find out the data nodes value idempotently. + return emptySet(); + } + + Set<Node> baseDataNodes = DistributionZonesUtil.dataNodes(fromBytes(dataNodesEntry.value())); + long scaleUpTriggerRevision = bytesToLong(scaleUpChangeTriggerKey.value()); + long scaleDownTriggerRevision = bytesToLong(scaleDownChangeTriggerKey.value()); + + LOG.info("+++++++ dataNodes scaleUpTriggerRevision " + scaleUpTriggerRevision); + LOG.info("+++++++ dataNodes scaleDownTriggerRevision " + scaleDownTriggerRevision); + + LOG.info("+++++++ dataNodes baseDataNodes " + baseDataNodes); + + Set<Node> finalDataNodes = new HashSet<>(baseDataNodes); + + LOG.info("+++++++ dataNodes subAugmentationMap " + subAugmentationMap); + + // If the subAugmentationMap is null then it means that the zone was removed. In this case all nodes from topologyAugmentationMap + // must be already written to the meta storage. + if (subAugmentationMap != null) { + // Update the data nodes set with pending data from augmentation map + subAugmentationMap.forEach((rev, augmentation) -> { + if (augmentation.addition() && rev > scaleUpTriggerRevision && rev <= lastScaleUpRevision) { + for (Node node : augmentation.nodes()) { + LOG.info("+++++++ dataNodes finalDataNodes.add " + node); + finalDataNodes.add(node); + } + } + + if (!augmentation.addition() && rev > scaleDownTriggerRevision && rev <= lastScaleDownRevision) { + for (Node node : augmentation.nodes()) { + LOG.info("+++++++ dataNodes finalDataNodes.remove " + node); + finalDataNodes.remove(node); + } + } + }); + } + + // Apply the filter to get the final data nodes set. + Set<String> result = filterDataNodes(finalDataNodes, filter, nodesAttributes); + + LOG.info("+++++++ dataNodes result " + result); + + return result; + } + + /** + * These revisions correspond to the last configuration and topology events after which need to wait for the data nodes recalculation. + * These events are: a zone creation, changing a scale up timer to immediate, changing a scale down timer to immediate, + * changing a filter, deleting a zone, topology changes with the adding nodes, topology changes with removing nodes. + * + * @param causalityToken causalityToken. + * @param zoneId zoneId. + * @return Revisions. + */ + private IgniteBiTuple<Long, Long> getRevisionsOfLastScaleUpAndScaleDownEvents( + long causalityToken, + int zoneId) { + IgniteBiTuple<Long, Long> scaleUpAndScaleDownConfigRevisions = getLastScaleUpAndScaleDownConfigRevisions(causalityToken, zoneId); + + IgniteBiTuple<Long, Long> scaleUpAndScaleDownTopologyRevisions = + getLastScaleUpAndScaleDownTopologyRevisions(causalityToken, zoneId); + + long lastScaleUpRevision = max(scaleUpAndScaleDownConfigRevisions.get1(), scaleUpAndScaleDownTopologyRevisions.get1()); + + long lastScaleDownRevision = max(scaleUpAndScaleDownConfigRevisions.get2(), scaleUpAndScaleDownTopologyRevisions.get2()); + + return new IgniteBiTuple<>(lastScaleUpRevision, lastScaleDownRevision); + } + + /** + * Get revisions of the latest configuration change events which trigger immediate recalculation of the data nodes value. + * + * @param causalityToken causalityToken. + * @param zoneId zoneId. + * @return Revisions. + */ + private IgniteBiTuple<Long, Long> getLastScaleUpAndScaleDownConfigRevisions( + long causalityToken, + int zoneId + ) { + ConcurrentSkipListMap<Long, ZoneConfiguration> versionedCfg = zonesVersionedCfg.get(zoneId); + + Iterator<Map.Entry<Long, ZoneConfiguration>> reversedIterator = versionedCfg.headMap(causalityToken, true) + .descendingMap().entrySet().iterator(); + + Map.Entry<Long, ZoneConfiguration> entryNewerCfg = null; + + long scaleUpRevision = 0; + long scaleDownRevision = 0; + + // Iterate over zone configurations from newest to oldest. + while (reversedIterator.hasNext()) { + Map.Entry<Long, ZoneConfiguration> entryOlderCfg = reversedIterator.next(); + + ZoneConfiguration olderCfg = entryOlderCfg.getValue(); + + if (entryNewerCfg != null) { + boolean isScaleUpImmediate = entryNewerCfg.getValue().getDataNodesAutoAdjustScaleUp() == IMMEDIATE_TIMER_VALUE; + boolean isScaleDownImmediate = entryNewerCfg.getValue().getDataNodesAutoAdjustScaleDown() == IMMEDIATE_TIMER_VALUE; + + ZoneConfiguration newerCfg = entryNewerCfg.getValue(); + + if (scaleUpRevision == 0 && olderCfg.getDataNodesAutoAdjustScaleUp() != newerCfg.getDataNodesAutoAdjustScaleUp() + && newerCfg.getDataNodesAutoAdjustScaleUp() == IMMEDIATE_TIMER_VALUE + && isScaleUpImmediate) { + scaleUpRevision = entryNewerCfg.getKey(); + } + + if (scaleDownRevision == 0 && olderCfg.getDataNodesAutoAdjustScaleDown() != newerCfg.getDataNodesAutoAdjustScaleDown() + && newerCfg.getDataNodesAutoAdjustScaleDown() == IMMEDIATE_TIMER_VALUE + && isScaleDownImmediate) { + scaleDownRevision = entryNewerCfg.getKey(); + } + + if (scaleUpRevision == 0 && !olderCfg.getFilter().equals(newerCfg.getFilter())) { + scaleUpRevision = entryNewerCfg.getKey(); + } + } + + if ((scaleUpRevision > 0) && (scaleDownRevision > 0)) { + break; + } + + entryNewerCfg = entryOlderCfg; + } + + // The case when there is only one configuration in the history. + if (entryNewerCfg != null) { + if (scaleUpRevision == 0) { + scaleUpRevision = entryNewerCfg.getKey(); + } + + if (scaleDownRevision == 0) { + scaleDownRevision = entryNewerCfg.getKey(); + } + } + + return new IgniteBiTuple<>(scaleUpRevision, scaleDownRevision); + } + + /** + * Get revisions of the latest topology event with added nodes and with removed nodes when the zone have + * immediate scale up and scale down timers. + * + * @param causalityToken causalityToken. + * @param zoneId zoneId. + * @return Revisions. + */ + private IgniteBiTuple<Long, Long> getLastScaleUpAndScaleDownTopologyRevisions(long causalityToken, int zoneId) { + Set<NodeWithAttributes> newerLogicalTopology; + + long newerTopologyRevision; + + Entry topologyEntry = msManager.getLocally(zonesLogicalTopologyKey(), causalityToken); + + long scaleUpTopologyRevision = 0; + long scaleDownTopologyRevision = 0; + + + if (!topologyEntry.empty()) { + byte[] newerLogicalTopologyBytes = topologyEntry.value(); + + newerLogicalTopology = fromBytes(newerLogicalTopologyBytes); + + newerTopologyRevision = topologyEntry.revision(); + + while ((scaleUpTopologyRevision == 0) || (scaleDownTopologyRevision == 0)) { + topologyEntry = msManager.getLocally(zonesLogicalTopologyKey(), newerTopologyRevision - 1); + + Set<NodeWithAttributes> olderLogicalTopology; + + if (topologyEntry.empty()) { + // If older topology is empty then it means that each topology changes were iterated + // so use empty set to compare it with the first topology. + olderLogicalTopology = emptySet(); + } else { + byte[] olderLogicalTopologyBytes = topologyEntry.value(); + + olderLogicalTopology = fromBytes(olderLogicalTopologyBytes); + } + + Set<NodeWithAttributes> finalNewerLogicalTopology = newerLogicalTopology; + + Set<Node> removedNodes = + olderLogicalTopology.stream() + .filter(node -> !finalNewerLogicalTopology.contains(node)) + .map(NodeWithAttributes::node) + .collect(toSet()); + + Set<Node> addedNodes = + newerLogicalTopology.stream() + .filter(node -> !olderLogicalTopology.contains(node)) + .map(NodeWithAttributes::node) + .collect(toSet()); + + Map.Entry<Long, ZoneConfiguration> zoneConfigurationEntry = zonesVersionedCfg.get(zoneId) + .floorEntry(newerTopologyRevision); + + if (zoneConfigurationEntry == null) { + break; + } + + ZoneConfiguration zoneCfg = zoneConfigurationEntry.getValue(); + + if (scaleUpTopologyRevision == 0 + && !addedNodes.isEmpty() + && zoneCfg.getDataNodesAutoAdjustScaleUp() == IMMEDIATE_TIMER_VALUE) { + scaleUpTopologyRevision = newerTopologyRevision; + } + + if (scaleDownTopologyRevision == 0 + && !removedNodes.isEmpty() + && zoneCfg.getDataNodesAutoAdjustScaleDown() == IMMEDIATE_TIMER_VALUE) { + scaleDownTopologyRevision = newerTopologyRevision; + } + + newerLogicalTopology = olderLogicalTopology; + + newerTopologyRevision = topologyEntry.revision(); + + if (topologyEntry.empty()) { + break; + } + } + } + + return new IgniteBiTuple<>(scaleUpTopologyRevision, scaleDownTopologyRevision); + } + + /** + * Search a value of zoneScaleUpChangeTriggerKey/zoneScaleDownChangeTriggerKey which equals or greater than scaleRevision. + * It iterates over the entries in the local meta storage. If there is an entry with a value equals to or greater than + * the scaleRevision, then it returns the revision of this entry. If there is no such entry then it returns zero. + * + * @param scaleRevision Scale revision. + * @param zoneId Zone id. + * @param triggerKey Trigger key. + * @return Revision. + */ + private long searchTriggerKey(Long scaleRevision, int zoneId, ByteArray triggerKey) { + System.out.println("searchTriggerKey " + scaleRevision + " " + zoneId); + + Entry lastEntry = msManager.getLocally(triggerKey, Long.MAX_VALUE); + + long upperRevision = max(lastEntry.revision(), scaleRevision); + + // Gets old entries from storage to check if the expected value was handled before watch listener was registered. + List<Entry> entryList = msManager.getLocally(triggerKey.bytes(), scaleRevision, upperRevision); + + for (Entry entry : entryList) { + + // scaleRevision is null if the zone was removed. + if (entry.value() == null) { + return entry.revision(); + } else { + long entryScaleRevision = bytesToLong(entry.value()); + + if (entryScaleRevision >= scaleRevision) { + return entry.revision(); + } + } + } + + return 0; + } + + /** + * causalityOnUpdateScaleUp. + * + * @param revision revision. + * @param zoneId zoneId. + * @param newScaleUp newScaleUp. + */ + public void causalityOnUpdateScaleUp(long revision, int zoneId, int newScaleUp) { + ConcurrentSkipListMap<Long, ZoneConfiguration> versionedCfg = zonesVersionedCfg.get(zoneId); + + ZoneConfiguration previousCfg = versionedCfg.floorEntry(revision).getValue(); + + ZoneConfiguration newCfg = new ZoneConfiguration(previousCfg).setDataNodesAutoAdjustScaleUp(newScaleUp); + + versionedCfg.put(revision, newCfg); + + vaultMgr.put(zoneVersionedConfigurationKey(zoneId), toBytes(versionedCfg)).join(); + } + + /** + * causalityOnUpdateScaleDown. + * + * @param revision revision. + * @param zoneId zoneId. + * @param newScaleDown newScaleDown. + */ + public void causalityOnUpdateScaleDown(long revision, int zoneId, int newScaleDown) { + ConcurrentSkipListMap<Long, ZoneConfiguration> versionedCfg = zonesVersionedCfg.get(zoneId); + + ZoneConfiguration previousCfg = versionedCfg.floorEntry(revision).getValue(); + + ZoneConfiguration newCfg = new ZoneConfiguration(previousCfg).setDataNodesAutoAdjustScaleDown(newScaleDown); + + versionedCfg.put(revision, newCfg); + + vaultMgr.put(zoneVersionedConfigurationKey(zoneId), toBytes(versionedCfg)).join(); + } + + /** + * onUpdateFilter. + * + * @param revision revision. + * @param zoneId zoneId. + * @param filter filter. + */ + public void onUpdateFilter(long revision, int zoneId, String filter) { + ConcurrentSkipListMap<Long, ZoneConfiguration> versionedCfg = zonesVersionedCfg.get(zoneId); + + ZoneConfiguration previousCfg = versionedCfg.floorEntry(revision).getValue(); + + ZoneConfiguration newCfg = new ZoneConfiguration(previousCfg).setFilter(filter); + + versionedCfg.put(revision, newCfg); + + vaultMgr.put(zoneVersionedConfigurationKey(zoneId), toBytes(versionedCfg)).join(); + } + + /** + * onCreateOrRestoreZoneState. + * + * @param revision revision. + * @param zoneId zoneId. + * @param zoneCreation zoneCreation. + * @param zone zone. + */ + public void onCreateOrRestoreZoneState(long revision, int zoneId, boolean zoneCreation, DistributionZoneView zone) { + if (zoneCreation) { + ZoneConfiguration zoneConfiguration = new ZoneConfiguration( + false, + zone.dataNodesAutoAdjustScaleUp(), + zone.dataNodesAutoAdjustScaleDown(), + zone.filter() + ); + + ConcurrentSkipListMap<Long, ZoneConfiguration> versionedCfg = new ConcurrentSkipListMap<>(); + + versionedCfg.put(revision, zoneConfiguration); + + zonesVersionedCfg.put(zoneId, versionedCfg); + + vaultMgr.put(zoneVersionedConfigurationKey(zoneId), toBytes(versionedCfg)).join(); + + } else { + VaultEntry versionedCfgEntry = vaultMgr.get(zoneVersionedConfigurationKey(zoneId)).join(); + + if (versionedCfgEntry != null) { + zonesVersionedCfg.put(zoneId, fromBytes(versionedCfgEntry.value())); + } + } + } + + /** + * onDelete. + * + * @param revision revision. + * @param zoneId zoneId. + */ + public void onDelete(long revision, int zoneId) { + ConcurrentSkipListMap<Long, ZoneConfiguration> versionedCfg = zonesVersionedCfg.get(zoneId); + + ZoneConfiguration previousCfg = versionedCfg.floorEntry(revision).getValue(); + + ZoneConfiguration newCfg = new ZoneConfiguration(previousCfg).setIsRemoved(true); + + versionedCfg.put(revision, newCfg); + + vaultMgr.put(zoneVersionedConfigurationKey(zoneId), toBytes(versionedCfg)).join(); + } + + /** + * Class stores zone configuration parameters. Changing of these parameters can trigger a data nodes recalculation. + */ + public static class ZoneConfiguration implements Serializable { Review Comment: Why do we need a separate class, if we could use `DistributionZoneView` itself with all information? -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
