Create a utility class for static SnapshotsService methods (#132521)

DiannaHohensee · web-flow · commit f0f641086f0f · 2025-08-07T10:18:53.000-07:00
This moves the static methods out of the SnapshotsService to
make the stateful code more visible. This is one step towards
refactoring the SnapshotsService.

Relates ES-11650
diff --git a/modules/repository-s3/src/main/java/org/elasticsearch/repositories/s3/S3Repository.java b/modules/repository-s3/src/main/java/org/elasticsearch/repositories/s3/S3Repository.java
@@ -42,6 +42,7 @@
 import org.elasticsearch.repositories.blobstore.MeteredBlobStoreRepository;
 import org.elasticsearch.snapshots.SnapshotId;
 import org.elasticsearch.snapshots.SnapshotsService;
+import org.elasticsearch.snapshots.SnapshotsServiceUtils;
 import org.elasticsearch.threadpool.Scheduler;
 import org.elasticsearch.threadpool.ThreadPool;
 import org.elasticsearch.xcontent.NamedXContentRegistry;
@@ -388,7 +389,7 @@ private static ByteSizeValue objectSizeLimit(ByteSizeValue chunkSize, ByteSizeVa
     @Override
     public void finalizeSnapshot(final FinalizeSnapshotContext finalizeSnapshotContext) {
         final FinalizeSnapshotContext wrappedFinalizeContext;
-        if (SnapshotsService.useShardGenerations(finalizeSnapshotContext.repositoryMetaVersion()) == false) {
+        if (SnapshotsServiceUtils.useShardGenerations(finalizeSnapshotContext.repositoryMetaVersion()) == false) {
             final ListenableFuture<Void> metadataDone = new ListenableFuture<>();
             wrappedFinalizeContext = new FinalizeSnapshotContext(
                 finalizeSnapshotContext.serializeProjectMetadata(),
diff --git a/qa/repository-multi-version/src/test/java/org/elasticsearch/upgrades/MultiVersionRepositoryAccessIT.java b/qa/repository-multi-version/src/test/java/org/elasticsearch/upgrades/MultiVersionRepositoryAccessIT.java
@@ -18,7 +18,7 @@
 import org.elasticsearch.common.settings.Settings;
 import org.elasticsearch.index.IndexVersion;
 import org.elasticsearch.index.IndexVersions;
-import org.elasticsearch.snapshots.SnapshotsService;
+import org.elasticsearch.snapshots.SnapshotsServiceUtils;
 import org.elasticsearch.test.rest.ESRestTestCase;
 import org.elasticsearch.test.rest.ObjectPath;
 import org.elasticsearch.xcontent.XContentParser;
@@ -183,7 +183,7 @@ public void testUpgradeMovesRepoToNewMetaVersion() throws IOException {
             // incompatibility in the downgrade test step. We verify that it is impossible here and then create the repo using verify=false
             // to check behavior on other operations below.
             final boolean verify = TEST_STEP != TestStep.STEP3_OLD_CLUSTER
-                || SnapshotsService.includesUUIDs(minNodeVersion)
+                || SnapshotsServiceUtils.includesUUIDs(minNodeVersion)
                 || minNodeVersion.before(IndexVersions.V_7_12_0);
             if (verify == false) {
                 expectThrowsAnyOf(EXPECTED_BWC_EXCEPTIONS, () -> createRepository(repoName, false, true));
@@ -208,7 +208,7 @@ public void testUpgradeMovesRepoToNewMetaVersion() throws IOException {
                     ensureSnapshotRestoreWorks(repoName, "snapshot-2", shards, index);
                 }
             } else {
-                if (SnapshotsService.includesUUIDs(minNodeVersion) == false) {
+                if (SnapshotsServiceUtils.includesUUIDs(minNodeVersion) == false) {
                     assertThat(TEST_STEP, is(TestStep.STEP3_OLD_CLUSTER));
                     expectThrowsAnyOf(EXPECTED_BWC_EXCEPTIONS, () -> listSnapshots(repoName));
                     expectThrowsAnyOf(EXPECTED_BWC_EXCEPTIONS, () -> deleteSnapshot(repoName, "snapshot-1"));
diff --git a/server/src/internalClusterTest/java/org/elasticsearch/snapshots/CorruptedBlobStoreRepositoryIT.java b/server/src/internalClusterTest/java/org/elasticsearch/snapshots/CorruptedBlobStoreRepositoryIT.java
@@ -327,7 +327,7 @@ public void testHandlingMissingRootLevelSnapshotMetadata() throws Exception {
 
         logger.info("--> verify that repo is assumed in old metadata format");
         assertThat(
-            SnapshotsService.minCompatibleVersion(IndexVersion.current(), getRepositoryData(repoName), null),
+            SnapshotsServiceUtils.minCompatibleVersion(IndexVersion.current(), getRepositoryData(repoName), null),
             is(SnapshotsService.OLD_SNAPSHOT_FORMAT)
         );
 
@@ -336,7 +336,7 @@ public void testHandlingMissingRootLevelSnapshotMetadata() throws Exception {
 
         logger.info("--> verify that repository is assumed in new metadata format after removing corrupted snapshot");
         assertThat(
-            SnapshotsService.minCompatibleVersion(IndexVersion.current(), getRepositoryData(repoName), null),
+            SnapshotsServiceUtils.minCompatibleVersion(IndexVersion.current(), getRepositoryData(repoName), null),
             is(IndexVersion.current())
         );
         final RepositoryData finalRepositoryData = getRepositoryData(repoName);
diff --git a/server/src/main/java/org/elasticsearch/action/admin/cluster/repositories/cleanup/TransportCleanupRepositoryAction.java b/server/src/main/java/org/elasticsearch/action/admin/cluster/repositories/cleanup/TransportCleanupRepositoryAction.java
@@ -37,7 +37,7 @@
 import org.elasticsearch.repositories.RepositoryCleanupResult;
 import org.elasticsearch.repositories.RepositoryData;
 import org.elasticsearch.repositories.blobstore.BlobStoreRepository;
-import org.elasticsearch.snapshots.SnapshotsService;
+import org.elasticsearch.snapshots.SnapshotsServiceUtils;
 import org.elasticsearch.tasks.Task;
 import org.elasticsearch.threadpool.ThreadPool;
 import org.elasticsearch.transport.TransportService;
@@ -178,8 +178,8 @@ private void cleanupRepo(ProjectId projectId, String repositoryName, ActionListe
                     @Override
                     public ClusterState execute(ClusterState currentState) {
                         final ProjectMetadata projectMetadata = currentState.metadata().getProject(projectId);
-                        SnapshotsService.ensureRepositoryExists(repositoryName, projectMetadata);
-                        SnapshotsService.ensureNotReadOnly(projectMetadata, repositoryName);
+                        SnapshotsServiceUtils.ensureRepositoryExists(repositoryName, projectMetadata);
+                        SnapshotsServiceUtils.ensureNotReadOnly(projectMetadata, repositoryName);
                         // Repository cleanup is intentionally cluster wide exclusive
                         final RepositoryCleanupInProgress repositoryCleanupInProgress = RepositoryCleanupInProgress.get(currentState);
                         if (repositoryCleanupInProgress.hasCleanupInProgress()) {
diff --git a/server/src/main/java/org/elasticsearch/action/admin/cluster/snapshots/status/TransportSnapshotsStatusAction.java b/server/src/main/java/org/elasticsearch/action/admin/cluster/snapshots/status/TransportSnapshotsStatusAction.java
@@ -46,7 +46,7 @@
 import org.elasticsearch.snapshots.SnapshotShardFailure;
 import org.elasticsearch.snapshots.SnapshotShardsService;
 import org.elasticsearch.snapshots.SnapshotState;
-import org.elasticsearch.snapshots.SnapshotsService;
+import org.elasticsearch.snapshots.SnapshotsServiceUtils;
 import org.elasticsearch.tasks.CancellableTask;
 import org.elasticsearch.tasks.Task;
 import org.elasticsearch.threadpool.ThreadPool;
@@ -121,7 +121,7 @@ protected void masterOperation(
 
         final SnapshotsInProgress snapshotsInProgress = SnapshotsInProgress.get(state);
         final ProjectId projectId = projectResolver.getProjectId();
-        List<SnapshotsInProgress.Entry> currentSnapshots = SnapshotsService.currentSnapshots(
+        List<SnapshotsInProgress.Entry> currentSnapshots = SnapshotsServiceUtils.currentSnapshots(
             snapshotsInProgress,
             projectId,
             request.repository(),
diff --git a/server/src/main/java/org/elasticsearch/action/admin/indices/rollover/MetadataRolloverService.java b/server/src/main/java/org/elasticsearch/action/admin/indices/rollover/MetadataRolloverService.java
@@ -50,7 +50,7 @@
 import org.elasticsearch.indices.SystemIndices;
 import org.elasticsearch.injection.guice.Inject;
 import org.elasticsearch.snapshots.SnapshotInProgressException;
-import org.elasticsearch.snapshots.SnapshotsService;
+import org.elasticsearch.snapshots.SnapshotsServiceUtils;
 import org.elasticsearch.telemetry.TelemetryProvider;
 import org.elasticsearch.telemetry.metric.MeterRegistry;
 import org.elasticsearch.threadpool.ThreadPool;
@@ -305,7 +305,7 @@ private RolloverResult rolloverDataStream(
         boolean isFailureStoreRollover
     ) throws Exception {
         final ProjectMetadata metadata = projectState.metadata();
-        Set<String> snapshottingDataStreams = SnapshotsService.snapshottingDataStreams(
+        Set<String> snapshottingDataStreams = SnapshotsServiceUtils.snapshottingDataStreams(
             projectState,
             Collections.singleton(dataStream.getName())
         );
diff --git a/server/src/main/java/org/elasticsearch/cluster/metadata/MetadataDataStreamsService.java b/server/src/main/java/org/elasticsearch/cluster/metadata/MetadataDataStreamsService.java
@@ -37,7 +37,7 @@
 import org.elasticsearch.logging.LogManager;
 import org.elasticsearch.logging.Logger;
 import org.elasticsearch.snapshots.SnapshotInProgressException;
-import org.elasticsearch.snapshots.SnapshotsService;
+import org.elasticsearch.snapshots.SnapshotsServiceUtils;
 
 import java.io.IOException;
 import java.util.HashSet;
@@ -664,7 +664,7 @@ public static ClusterState deleteDataStreams(ProjectState projectState, Set<Data
         }
 
         Set<String> dataStreamNames = dataStreams.stream().map(DataStream::getName).collect(Collectors.toSet());
-        Set<String> snapshottingDataStreams = SnapshotsService.snapshottingDataStreams(projectState, dataStreamNames);
+        Set<String> snapshottingDataStreams = SnapshotsServiceUtils.snapshottingDataStreams(projectState, dataStreamNames);
         if (snapshottingDataStreams.isEmpty() == false) {
             throw new SnapshotInProgressException(
                 "Cannot delete data streams that are being snapshotted: ["
diff --git a/server/src/main/java/org/elasticsearch/cluster/metadata/MetadataDeleteIndexService.java b/server/src/main/java/org/elasticsearch/cluster/metadata/MetadataDeleteIndexService.java
@@ -35,7 +35,7 @@
 import org.elasticsearch.injection.guice.Inject;
 import org.elasticsearch.snapshots.RestoreService;
 import org.elasticsearch.snapshots.SnapshotInProgressException;
-import org.elasticsearch.snapshots.SnapshotsService;
+import org.elasticsearch.snapshots.SnapshotsServiceUtils;
 
 import java.util.HashMap;
 import java.util.HashSet;
@@ -186,7 +186,7 @@ public static ClusterState deleteIndices(ProjectState projectState, Set<Index> i
         }
 
         // Check if index deletion conflicts with any running snapshots
-        Set<Index> snapshottingIndices = SnapshotsService.snapshottingIndices(projectState, indicesToDelete);
+        Set<Index> snapshottingIndices = SnapshotsServiceUtils.snapshottingIndices(projectState, indicesToDelete);
         if (snapshottingIndices.isEmpty() == false) {
             throw new SnapshotInProgressException(
                 "Cannot delete indices that are being snapshotted: "
diff --git a/server/src/main/java/org/elasticsearch/cluster/metadata/MetadataIndexStateService.java b/server/src/main/java/org/elasticsearch/cluster/metadata/MetadataIndexStateService.java
@@ -77,7 +77,7 @@
 import org.elasticsearch.rest.RestStatus;
 import org.elasticsearch.snapshots.RestoreService;
 import org.elasticsearch.snapshots.SnapshotInProgressException;
-import org.elasticsearch.snapshots.SnapshotsService;
+import org.elasticsearch.snapshots.SnapshotsServiceUtils;
 import org.elasticsearch.tasks.TaskId;
 import org.elasticsearch.threadpool.ThreadPool;
 
@@ -346,7 +346,7 @@ static ClusterState addIndexClosedBlocks(
         }
 
         // Check if index closing conflicts with any running snapshots
-        Set<Index> snapshottingIndices = SnapshotsService.snapshottingIndices(currentProjectState, indicesToClose);
+        Set<Index> snapshottingIndices = SnapshotsServiceUtils.snapshottingIndices(currentProjectState, indicesToClose);
         if (snapshottingIndices.isEmpty() == false) {
             throw new SnapshotInProgressException(
                 "Cannot close indices that are being snapshotted: "
@@ -934,7 +934,7 @@ static Tuple<ClusterState, List<IndexResult>> closeRoutingTable(
                 }
 
                 // Check if index closing conflicts with any running snapshots
-                Set<Index> snapshottingIndices = SnapshotsService.snapshottingIndices(currentProjectState, Set.of(index));
+                Set<Index> snapshottingIndices = SnapshotsServiceUtils.snapshottingIndices(currentProjectState, Set.of(index));
                 if (snapshottingIndices.isEmpty() == false) {
                     closingResults.put(
                         result.getKey(),
diff --git a/server/src/main/java/org/elasticsearch/repositories/FinalizeSnapshotContext.java b/server/src/main/java/org/elasticsearch/repositories/FinalizeSnapshotContext.java
@@ -17,7 +17,7 @@
 import org.elasticsearch.cluster.metadata.Metadata;
 import org.elasticsearch.index.IndexVersion;
 import org.elasticsearch.snapshots.SnapshotInfo;
-import org.elasticsearch.snapshots.SnapshotsService;
+import org.elasticsearch.snapshots.SnapshotsServiceUtils;
 
 import java.util.Map;
 import java.util.Set;
@@ -111,7 +111,11 @@ public Map<RepositoryShardId, Set<ShardGeneration>> obsoleteShardGenerations() {
      * Returns a new {@link ClusterState}, based on the given {@code state} with the create-snapshot entry removed.
      */
     public ClusterState updatedClusterState(ClusterState state) {
-        final ClusterState updatedState = SnapshotsService.stateWithoutSnapshot(state, snapshotInfo.snapshot(), updatedShardGenerations);
+        final ClusterState updatedState = SnapshotsServiceUtils.stateWithoutSnapshot(
+            state,
+            snapshotInfo.snapshot(),
+            updatedShardGenerations
+        );
         // Now that the updated cluster state may have changed in-progress shard snapshots' shard generations to the latest shard
         // generation, let's mark any now unreferenced shard generations as obsolete and ready to be deleted.
         obsoleteGenerations.set(
diff --git a/server/src/main/java/org/elasticsearch/repositories/RepositoryData.java b/server/src/main/java/org/elasticsearch/repositories/RepositoryData.java
@@ -30,6 +30,7 @@
 import org.elasticsearch.snapshots.SnapshotInfo;
 import org.elasticsearch.snapshots.SnapshotState;
 import org.elasticsearch.snapshots.SnapshotsService;
+import org.elasticsearch.snapshots.SnapshotsServiceUtils;
 import org.elasticsearch.threadpool.ThreadPool;
 import org.elasticsearch.xcontent.XContentBuilder;
 import org.elasticsearch.xcontent.XContentParser;
@@ -699,9 +700,9 @@ public XContentBuilder snapshotsToXContent(final XContentBuilder builder, final
     public XContentBuilder snapshotsToXContent(final XContentBuilder builder, final IndexVersion repoMetaVersion, boolean permitMissingUuid)
         throws IOException {
 
-        final boolean shouldWriteUUIDS = SnapshotsService.includesUUIDs(repoMetaVersion);
-        final boolean shouldWriteIndexGens = SnapshotsService.useIndexGenerations(repoMetaVersion);
-        final boolean shouldWriteShardGens = SnapshotsService.useShardGenerations(repoMetaVersion);
+        final boolean shouldWriteUUIDS = SnapshotsServiceUtils.includesUUIDs(repoMetaVersion);
+        final boolean shouldWriteIndexGens = SnapshotsServiceUtils.useIndexGenerations(repoMetaVersion);
+        final boolean shouldWriteShardGens = SnapshotsServiceUtils.useShardGenerations(repoMetaVersion);
 
         assert Boolean.compare(shouldWriteUUIDS, shouldWriteIndexGens) <= 0;
         assert Boolean.compare(shouldWriteIndexGens, shouldWriteShardGens) <= 0;
@@ -908,7 +909,7 @@ public static RepositoryData snapshotsFromXContent(XContentParser parser, long g
                                 this snapshot repository format requires Elasticsearch version [%s] or later""", versionString));
                     };
 
-                    assert SnapshotsService.useShardGenerations(version);
+                    assert SnapshotsServiceUtils.useShardGenerations(version);
                 }
                 case UUID -> {
                     XContentParserUtils.ensureExpectedToken(XContentParser.Token.VALUE_STRING, parser.nextToken(), parser);
diff --git a/server/src/main/java/org/elasticsearch/repositories/blobstore/BlobStoreRepository.java b/server/src/main/java/org/elasticsearch/repositories/blobstore/BlobStoreRepository.java
@@ -130,6 +130,7 @@
 import org.elasticsearch.snapshots.SnapshotInfo;
 import org.elasticsearch.snapshots.SnapshotMissingException;
 import org.elasticsearch.snapshots.SnapshotsService;
+import org.elasticsearch.snapshots.SnapshotsServiceUtils;
 import org.elasticsearch.tasks.TaskCancelledException;
 import org.elasticsearch.threadpool.ThreadPool;
 import org.elasticsearch.transport.LeakTracker;
@@ -999,7 +1000,7 @@ private void createSnapshotsDeletion(
                 return new SnapshotsDeletion(
                     snapshotIds,
                     repositoryDataGeneration,
-                    SnapshotsService.minCompatibleVersion(minimumNodeVersion, originalRepositoryData, snapshotIds),
+                    SnapshotsServiceUtils.minCompatibleVersion(minimumNodeVersion, originalRepositoryData, snapshotIds),
                     originalRootBlobs,
                     blobStore().blobContainer(indicesPath()).children(OperationPurpose.SNAPSHOT_DATA),
                     originalRepositoryData
@@ -1105,7 +1106,7 @@ class SnapshotsDeletion {
             this.snapshotIds = snapshotIds;
             this.originalRepositoryDataGeneration = originalRepositoryDataGeneration;
             this.repositoryFormatIndexVersion = repositoryFormatIndexVersion;
-            this.useShardGenerations = SnapshotsService.useShardGenerations(repositoryFormatIndexVersion);
+            this.useShardGenerations = SnapshotsServiceUtils.useShardGenerations(repositoryFormatIndexVersion);
             this.originalRootBlobs = originalRootBlobs;
             this.originalIndexContainers = originalIndexContainers;
             this.originalRepositoryData = originalRepositoryData;
@@ -1776,11 +1777,11 @@ public void finalizeSnapshot(final FinalizeSnapshotContext finalizeSnapshotConte
         // If there are older version nodes in the cluster, we don't need to run this cleanup as it will have already happened
         // when writing the index-${N} to each shard directory.
         final IndexVersion repositoryMetaVersion = finalizeSnapshotContext.repositoryMetaVersion();
-        final boolean writeShardGens = SnapshotsService.useShardGenerations(repositoryMetaVersion);
+        final boolean writeShardGens = SnapshotsServiceUtils.useShardGenerations(repositoryMetaVersion);
 
         final Executor executor = threadPool.executor(ThreadPool.Names.SNAPSHOT);
 
-        final boolean writeIndexGens = SnapshotsService.useIndexGenerations(repositoryMetaVersion);
+        final boolean writeIndexGens = SnapshotsServiceUtils.useIndexGenerations(repositoryMetaVersion);
 
         record MetadataWriteResult(
             RepositoryData existingRepositoryData,
@@ -2563,7 +2564,7 @@ private void cacheRepositoryData(RepositoryData repositoryData, IndexVersion ver
             return;
         }
         final RepositoryData toCache;
-        if (SnapshotsService.useShardGenerations(version)) {
+        if (SnapshotsServiceUtils.useShardGenerations(version)) {
             toCache = repositoryData;
         } else {
             // don't cache shard generations here as they may be unreliable
@@ -2918,7 +2919,7 @@ public void onFailure(Exception e) {
             }, true);
             maybeWriteIndexLatest(newGen);
 
-            if (filteredRepositoryData.getUuid().equals(RepositoryData.MISSING_UUID) && SnapshotsService.includesUUIDs(version)) {
+            if (filteredRepositoryData.getUuid().equals(RepositoryData.MISSING_UUID) && SnapshotsServiceUtils.includesUUIDs(version)) {
                 assert newRepositoryData.getUuid().equals(RepositoryData.MISSING_UUID) == false;
                 logger.info(
                     Strings.format(
@@ -3000,7 +3001,7 @@ public String toString() {
     }
 
     private RepositoryData updateRepositoryData(RepositoryData repositoryData, IndexVersion repositoryMetaversion, long newGen) {
-        if (SnapshotsService.includesUUIDs(repositoryMetaversion)) {
+        if (SnapshotsServiceUtils.includesUUIDs(repositoryMetaversion)) {
             final String clusterUUID = clusterService.state().metadata().clusterUUID();
             if (repositoryData.getClusterUUID().equals(clusterUUID) == false) {
                 repositoryData = repositoryData.withClusterUuid(clusterUUID);
@@ -3137,7 +3138,7 @@ private ClusterState updateRepositoryGenerationsIfNecessary(ClusterState state,
             }
         }
         updatedDeletionsInProgress = changedDeletions ? SnapshotDeletionsInProgress.of(deletionEntries) : null;
-        return SnapshotsService.updateWithSnapshots(state, updatedSnapshotsInProgress, updatedDeletionsInProgress);
+        return SnapshotsServiceUtils.updateWithSnapshots(state, updatedSnapshotsInProgress, updatedDeletionsInProgress);
     }
 
     private RepositoryMetadata getRepoMetadata(ProjectMetadata projectMetadata) {
@@ -3376,8 +3377,8 @@ private void doSnapshotShard(SnapshotShardContext context) {
             );
 
             final ShardGeneration indexGeneration;
-            final boolean writeShardGens = SnapshotsService.useShardGenerations(context.getRepositoryMetaVersion());
-            final boolean writeFileInfoWriterUUID = SnapshotsService.includeFileInfoWriterUUID(context.getRepositoryMetaVersion());
+            final boolean writeShardGens = SnapshotsServiceUtils.useShardGenerations(context.getRepositoryMetaVersion());
+            final boolean writeFileInfoWriterUUID = SnapshotsServiceUtils.includeFileInfoWriterUUID(context.getRepositoryMetaVersion());
             // build a new BlobStoreIndexShardSnapshot, that includes this one and all the saved ones
             final BlobStoreIndexShardSnapshots updatedBlobStoreIndexShardSnapshots = snapshots.withAddedSnapshot(
                 new SnapshotFiles(snapshotId.getName(), indexCommitPointFiles, context.stateIdentifier())
diff --git a/server/src/main/java/org/elasticsearch/snapshots/SnapshotShardsService.java b/server/src/main/java/org/elasticsearch/snapshots/SnapshotShardsService.java
diff --git a/server/src/main/java/org/elasticsearch/snapshots/SnapshotsService.java b/server/src/main/java/org/elasticsearch/snapshots/SnapshotsService.java
diff --git a/server/src/main/java/org/elasticsearch/snapshots/SnapshotsServiceUtils.java b/server/src/main/java/org/elasticsearch/snapshots/SnapshotsServiceUtils.java
diff --git a/server/src/test/java/org/elasticsearch/snapshots/SnapshotResiliencyTests.java b/server/src/test/java/org/elasticsearch/snapshots/SnapshotResiliencyTests.java
diff --git a/server/src/test/java/org/elasticsearch/snapshots/SnapshotsServiceTests.java b/server/src/test/java/org/elasticsearch/snapshots/SnapshotsServiceTests.java
diff --git a/test/framework/src/main/java/org/elasticsearch/snapshots/AbstractSnapshotIntegTestCase.java b/test/framework/src/main/java/org/elasticsearch/snapshots/AbstractSnapshotIntegTestCase.java
