Vladsz83 commented on code in PR #13666: URL: https://github.com/apache/ignite/pull/13666#discussion_r4324398996
########## modules/core/src/main/java/org/apache/ignite/internal/management/snapshot/SnapshotListTask.java: ########## @@ -0,0 +1,452 @@ +/* + * 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.management.snapshot; + +import java.io.File; +import java.io.IOException; +import java.nio.file.FileVisitResult; +import java.nio.file.Files; +import java.nio.file.Path; +import java.nio.file.SimpleFileVisitor; +import java.nio.file.attribute.BasicFileAttributes; +import java.util.ArrayList; +import java.util.Collection; +import java.util.Collections; +import java.util.Comparator; +import java.util.List; +import java.util.Map; +import java.util.Set; +import java.util.UUID; +import java.util.concurrent.ConcurrentHashMap; +import java.util.concurrent.ExecutionException; +import java.util.concurrent.Future; +import java.util.concurrent.atomic.AtomicBoolean; +import java.util.concurrent.atomic.AtomicLong; +import org.apache.ignite.IgniteException; +import org.apache.ignite.IgniteLogger; +import org.apache.ignite.cluster.ClusterNode; +import org.apache.ignite.compute.ComputeJobResult; +import org.apache.ignite.internal.NodeStoppingException; +import org.apache.ignite.internal.processors.cache.persistence.filename.SnapshotFileTree; +import org.apache.ignite.internal.processors.cache.persistence.snapshot.IgniteSnapshotManager; +import org.apache.ignite.internal.processors.cache.persistence.snapshot.IncrementalSnapshotMetadata; +import org.apache.ignite.internal.processors.cache.persistence.snapshot.SnapshotListJobResult; +import org.apache.ignite.internal.processors.cache.persistence.snapshot.SnapshotListTaskResult; +import org.apache.ignite.internal.processors.cache.persistence.snapshot.SnapshotMetadata; +import org.apache.ignite.internal.processors.rollingupgrade.feature.CoreFeatureRegistry; +import org.apache.ignite.internal.processors.task.GridInternal; +import org.apache.ignite.internal.thread.pool.IgniteThreadPoolExecutor; +import org.apache.ignite.internal.util.typedef.F; +import org.apache.ignite.internal.util.typedef.T2; +import org.apache.ignite.internal.util.typedef.X; +import org.apache.ignite.internal.visor.VisorJob; +import org.apache.ignite.internal.visor.VisorMultiNodeTask; +import org.apache.ignite.internal.visor.VisorTaskArgument; +import org.apache.ignite.resources.LoggerResource; +import org.jetbrains.annotations.Nullable; + +import static org.apache.ignite.internal.util.lang.ClusterNodeFunc.nodeIds; + +/** */ +@GridInternal +public class SnapshotListTask extends VisorMultiNodeTask<SnapshotListCommandArg, SnapshotListTaskResult, SnapshotListJobResult> { + /** Serial version uid. */ + private static final long serialVersionUID = 0L; + + /** */ + public static final String FEATURE_NOT_ACTIVE_ERR_MSG = "Won't search for local snapshots. " + + "The snapshot list feature isn't activated yet."; + + /** {@inheritDoc} */ + @Override protected VisorJob<SnapshotListCommandArg, SnapshotListJobResult> job(SnapshotListCommandArg arg) { + return new SnapshotListJob(arg, debug); + } + + /** {@inheritDoc} */ + @Override protected Collection<UUID> jobNodes(VisorTaskArgument<SnapshotListCommandArg> arg) { + if (!ignite.context().rollingUpgrade().features().isActive(CoreFeatureRegistry.SNAPSHOT_LIST_FEATURE)) + throw new IgniteException(FEATURE_NOT_ACTIVE_ERR_MSG); + + /** Allows {@link #map0(List, VisorTaskArgument)} to use the entire grid. */ + return nodeIds(ignite.cluster().forServers().nodes()); + } + + /** {@inheritDoc} */ + @Override protected SnapshotListTaskResult reduce0(List<ComputeJobResult> nodesJobsResults) throws IgniteException { + String[] cstIds = new String[nodesJobsResults.size()]; + UUID[] nodesIds = new UUID[nodesJobsResults.size()]; + SnapshotListJobResult[] nodesResults = new SnapshotListJobResult[nodesJobsResults.size()]; + + for (int i = 0; i < nodesJobsResults.size(); i++) { + ComputeJobResult nodeJobRes = nodesJobsResults.get(i); + + if (nodeJobRes.getException() != null) { + throw new IgniteException("Failed to execute snapshot list job on node [uuid=" + nodeJobRes.getNode().id() + ']', + nodeJobRes.getException()); + } + + assert nodeJobRes.getData() != null; + + cstIds[i] = nodeConsistentId(nodeJobRes.getNode()); + nodesIds[i] = nodeJobRes.getNode().id(); + nodesResults[i] = nodeJobRes.getData(); + } + + return new SnapshotListTaskResult(cstIds, nodesIds, nodesResults); + } + + /** */ + private String nodeConsistentId(ClusterNode n) { + UUID nodeId = n.id(); + + n = ignite.context().discovery().node(nodeId); + + if (n == null) + n = ignite.context().discovery().historicalNode(nodeId); + + return n == null ? "" : n.consistentId().toString(); + } + + /** + * Walk through a directory. Doesn't lock it or its content. Tries to find files and summarize their size. + * Tolerates and skips concurrent modification errors. + */ + public static long calculateDirectorySize(File path) throws IOException { + AtomicLong size = new AtomicLong(0); + AtomicBoolean entered = new AtomicBoolean(); + + Files.walkFileTree(path.toPath(), new SimpleFileVisitor<>() { + @Override public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) { + entered.compareAndSet(false, true); + + // Use attrs instead of Files.size() for efficiency. + if (attrs.isRegularFile()) + size.addAndGet(attrs.size()); + + return FileVisitResult.CONTINUE; + } + + @Override public FileVisitResult visitFileFailed(Path file, IOException err) throws IOException { + if (!entered.get() && file.toFile().equals(path)) { + // Cannot even start snapshot size calculation - can't enter snapshot directory. + throw err; + } + + return FileVisitResult.CONTINUE; + } + }); + + return size.get(); + } + + /** */ + private static class SnapshotListJob extends SnapshotJob<SnapshotListCommandArg, SnapshotListJobResult> { + /** Serial version uid. */ + private static final long serialVersionUID = 0L; + + /** */ + @LoggerResource + private IgniteLogger log; + + /** + * @param arg Snapshot list task argument. + * @param debug Flag indicating whether debug information should be printed into node log. + */ + protected SnapshotListJob(SnapshotListCommandArg arg, boolean debug) { + super(arg, debug); + } + + /** {@inheritDoc} */ + @Override protected SnapshotListJobResult run(SnapshotListCommandArg arg) { + assert !ignite.localNode().isClient(); + + if (ignite.context().isStopping()) + throw new IgniteException("Won't search for local snapshots.", new NodeStoppingException("Node is stopping.")); + + // Read local snapshots. + List<T2<SnapshotFileTree, Long>> locSnps = findLocalSnapshots(arg.src()); + + if (locSnps.isEmpty()) + return new SnapshotListJobResult(Collections.emptyMap()); + + // Main sizes of the local snapshots (per snapshot name). + Map<String, Long> sizes = new ConcurrentHashMap<>(locSnps.size(), 1.0f); + // Optional incremental parts descriptions (per snapshot name). + Map<String, SnapshotListJobResult.SnapshotInfo> incs = new ConcurrentHashMap<>(locSnps.size(), 1.0f); + // Optional external storages descriptions (per snapshot name). + Map<String, SnapshotListJobResult.SnapshotInfo> extStors = new ConcurrentHashMap<>(locSnps.size(), 1.0f); + + // Snapshot sizes, incremental parts and external storages futures. + List<Future<?>> futs = new ArrayList<>(locSnps.size() * 3); + // Names of snapshots with read failures. + Set<String> failedSnps = ConcurrentHashMap.newKeySet(locSnps.size() / 2); + + IgniteThreadPoolExecutor exec = ignite.context().pools().getSnapshotExecutorService(); + + // Descriptions of the local snapshots: main sizes, external storages and incremental parts. + for (T2<SnapshotFileTree, Long> snpPair : locSnps) { + SnapshotFileTree sft = snpPair.get1(); + String snpName = sft.name(); + + // Future for the snapshot main size. It is the largest part of the job, thus it goes first. + Future<?> fut = exec.submit(() -> { + if (ignite.context().isStopping()) + throw new IgniteException("Won't search for local snapshots.", new NodeStoppingException("Node is stopping.")); + + if (failedSnps.contains(snpName)) + return; + + try { + sizes.put(snpName, calculateDirectorySize(sft.root())); + } + catch (Exception e) { + failedSnps.add(snpName); + + log.warning("Failed to calculate snapshot's size, snapshot ignored [snpName='" + snpName + "']", e); + } + }); + + futs.add(fut); + + // Future for optional incremental parts. + fut = exec.submit(() -> { + if (ignite.context().isStopping()) + throw new IgniteException("Won't search for local snapshots.", new NodeStoppingException("Node is stopping.")); + + if (failedSnps.contains(snpName)) + return; + + try { + SnapshotListJobResult.SnapshotInfo incDesc = incrementals(sft); + + if (incDesc != null) + incs.put(snpName, incDesc); + } + catch (Exception e) { + failedSnps.add(snpName); + + log.warning("Failed to read snapshot's incremental parts, snapshot ignored [snpName='" + snpName + "']", e); + } + }); + + futs.add(fut); + + // Future for optional external storages. + fut = exec.submit(() -> { + if (ignite.context().isStopping()) + throw new IgniteException("Won't search for local snapshots.", new NodeStoppingException("Node is stopping.")); + + if (failedSnps.contains(snpName)) + return; + + try { + SnapshotListJobResult.SnapshotInfo extDesc = externalStorages(sft); + + if (extDesc != null) + extStors.put(snpName, extDesc); + } + catch (Exception e) { + failedSnps.add(snpName); + + log.warning("Failed to read snapshot's external storages, snapshot ignored [snpName='" + snpName + "']", e); + } + }); + + futs.add(fut); + } + + // Wait for the futures. + for (Future<?> fut : futs) { + try { + fut.get(); + } + catch (ExecutionException e) { + throw new IgniteException("Failed to read local node's snapshots.", e); + } + catch (InterruptedException e) { + Thread.currentThread().interrupt(); + + throw new IgniteException("Interrupted while reading local snapshots.", e); + } + } + + // Result snapshot descriptions. + Map<String, SnapshotListJobResult.SnapshotInfo> resMap = new ConcurrentHashMap<>(locSnps.size() - failedSnps.size(), 1.0f); Review Comment: Done. -- This is an automated message from the Apache Git Service. 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