Remove unused BlobStore#deleteBlobsIgnoringIfNotExists (#118245)

This method is never called against a general `BlobStore`, we only use
it in certain implementations for which a bulk delete at the `BlobStore`
level makes sense. This commit removes the unused interface method.

modules/repository-azure/src/main/java/org/elasticsearch/repositories/azure/AzureBlobContainer.java

@@ -144,7 +144,7 @@ public DeleteResult delete(OperationPurpose purpose) throws IOException {
 
     @Override
     public void deleteBlobsIgnoringIfNotExists(OperationPurpose purpose, Iterator<String> blobNames) throws IOException {
-        blobStore.deleteBlobsIgnoringIfNotExists(purpose, new Iterator<>() {
+        blobStore.deleteBlobs(purpose, new Iterator<>() {
             @Override
             public boolean hasNext() {
                 return blobNames.hasNext();

modules/repository-azure/src/main/java/org/elasticsearch/repositories/azure/AzureBlobStore.java

@@ -264,8 +264,7 @@ public DeleteResult deleteBlobDirectory(OperationPurpose purpose, String path) t
         return new DeleteResult(blobsDeleted.get(), bytesDeleted.get());
     }
 
-    @Override
-    public void deleteBlobsIgnoringIfNotExists(OperationPurpose purpose, Iterator<String> blobNames) throws IOException {
+    void deleteBlobs(OperationPurpose purpose, Iterator<String> blobNames) {
         if (blobNames.hasNext() == false) {
             return;
         }

modules/repository-azure/src/test/java/org/elasticsearch/repositories/azure/AzureBlobContainerStatsTests.java

@@ -72,7 +72,7 @@ public void testRetriesAndOperationsAreTrackedSeparately() throws IOException {
                     false
                 );
                 case LIST_BLOBS -> blobStore.listBlobsByPrefix(purpose, randomIdentifier(), randomIdentifier());
-                case BLOB_BATCH -> blobStore.deleteBlobsIgnoringIfNotExists(
+                case BLOB_BATCH -> blobStore.deleteBlobs(
                     purpose,
                     List.of(randomIdentifier(), randomIdentifier(), randomIdentifier()).iterator()
                 );
@@ -113,7 +113,7 @@ public void testOperationPurposeIsReflectedInBlobStoreStats() throws IOException
             os.flush();
         });
         // BLOB_BATCH
-        blobStore.deleteBlobsIgnoringIfNotExists(purpose, List.of(randomIdentifier(), randomIdentifier(), randomIdentifier()).iterator());
+        blobStore.deleteBlobs(purpose, List.of(randomIdentifier(), randomIdentifier(), randomIdentifier()).iterator());
 
         Map<String, BlobStoreActionStats> stats = blobStore.stats();
         String statsMapString = stats.toString();
@@ -148,10 +148,7 @@ public void testOperationPurposeIsNotReflectedInBlobStoreStatsWhenNotServerless(
                 os.flush();
             });
             // BLOB_BATCH
-            blobStore.deleteBlobsIgnoringIfNotExists(
-                purpose,
-                List.of(randomIdentifier(), randomIdentifier(), randomIdentifier()).iterator()
-            );
+            blobStore.deleteBlobs(purpose, List.of(randomIdentifier(), randomIdentifier(), randomIdentifier()).iterator());
         }
 
         Map<String, BlobStoreActionStats> stats = blobStore.stats();

modules/repository-gcs/src/main/java/org/elasticsearch/repositories/gcs/GoogleCloudStorageBlobContainer.java

@@ -114,12 +114,12 @@ public void writeBlobAtomic(OperationPurpose purpose, String blobName, BytesRefe
 
     @Override
     public DeleteResult delete(OperationPurpose purpose) throws IOException {
-        return blobStore.deleteDirectory(purpose, path().buildAsString());
+        return blobStore.deleteDirectory(path().buildAsString());
     }
 
     @Override
     public void deleteBlobsIgnoringIfNotExists(OperationPurpose purpose, Iterator<String> blobNames) throws IOException {
-        blobStore.deleteBlobsIgnoringIfNotExists(purpose, new Iterator<>() {
+        blobStore.deleteBlobs(new Iterator<>() {
             @Override
             public boolean hasNext() {
                 return blobNames.hasNext();

modules/repository-gcs/src/main/java/org/elasticsearch/repositories/gcs/GoogleCloudStorageBlobStore.java

@@ -29,7 +29,6 @@
 import org.elasticsearch.common.blobstore.BlobStore;
 import org.elasticsearch.common.blobstore.BlobStoreActionStats;
 import org.elasticsearch.common.blobstore.DeleteResult;
-import org.elasticsearch.common.blobstore.OperationPurpose;
 import org.elasticsearch.common.blobstore.OptionalBytesReference;
 import org.elasticsearch.common.blobstore.support.BlobContainerUtils;
 import org.elasticsearch.common.blobstore.support.BlobMetadata;
@@ -491,18 +490,17 @@ private void writeBlobMultipart(BlobInfo blobInfo, byte[] buffer, int offset, in
     /**
      * Deletes the given path and all its children.
      *
-     * @param purpose The purpose of the delete operation
      * @param pathStr Name of path to delete
      */
-    DeleteResult deleteDirectory(OperationPurpose purpose, String pathStr) throws IOException {
+    DeleteResult deleteDirectory(String pathStr) throws IOException {
         return SocketAccess.doPrivilegedIOException(() -> {
             DeleteResult deleteResult = DeleteResult.ZERO;
             Page<Blob> page = client().list(bucketName, BlobListOption.prefix(pathStr));
             do {
                 final AtomicLong blobsDeleted = new AtomicLong(0L);
                 final AtomicLong bytesDeleted = new AtomicLong(0L);
                 final Iterator<Blob> blobs = page.getValues().iterator();
-                deleteBlobsIgnoringIfNotExists(purpose, new Iterator<>() {
+                deleteBlobs(new Iterator<>() {
                     @Override
                     public boolean hasNext() {
                         return blobs.hasNext();
@@ -526,11 +524,9 @@ public String next() {
     /**
      * Deletes multiple blobs from the specific bucket using a batch request
      *
-     * @param purpose the purpose of the delete operation
      * @param blobNames names of the blobs to delete
      */
-    @Override
-    public void deleteBlobsIgnoringIfNotExists(OperationPurpose purpose, Iterator<String> blobNames) throws IOException {
+    void deleteBlobs(Iterator<String> blobNames) throws IOException {
         if (blobNames.hasNext() == false) {
             return;
         }

modules/repository-s3/src/main/java/org/elasticsearch/repositories/s3/S3BlobContainer.java

@@ -342,10 +342,10 @@ public DeleteResult delete(OperationPurpose purpose) throws IOException {
                     return summary.getKey();
                 });
                 if (list.isTruncated()) {
-                    blobStore.deleteBlobsIgnoringIfNotExists(purpose, blobNameIterator);
+                    blobStore.deleteBlobs(purpose, blobNameIterator);
                     prevListing = list;
                 } else {
-                    blobStore.deleteBlobsIgnoringIfNotExists(purpose, Iterators.concat(blobNameIterator, Iterators.single(keyPath)));
+                    blobStore.deleteBlobs(purpose, Iterators.concat(blobNameIterator, Iterators.single(keyPath)));
                     break;
                 }
             }
@@ -357,7 +357,7 @@ public DeleteResult delete(OperationPurpose purpose) throws IOException {
 
     @Override
     public void deleteBlobsIgnoringIfNotExists(OperationPurpose purpose, Iterator<String> blobNames) throws IOException {
-        blobStore.deleteBlobsIgnoringIfNotExists(purpose, Iterators.map(blobNames, this::buildKey));
+        blobStore.deleteBlobs(purpose, Iterators.map(blobNames, this::buildKey));
     }
 
     @Override

modules/repository-s3/src/main/java/org/elasticsearch/repositories/s3/S3BlobStore.java

@@ -340,8 +340,7 @@ public BlobContainer blobContainer(BlobPath path) {
         return new S3BlobContainer(path, this);
     }
 
-    @Override
-    public void deleteBlobsIgnoringIfNotExists(OperationPurpose purpose, Iterator<String> blobNames) throws IOException {
+    void deleteBlobs(OperationPurpose purpose, Iterator<String> blobNames) throws IOException {
         if (blobNames.hasNext() == false) {
             return;
         }

modules/repository-url/src/main/java/org/elasticsearch/common/blobstore/url/URLBlobStore.java

@@ -13,7 +13,6 @@
 import org.elasticsearch.common.blobstore.BlobPath;
 import org.elasticsearch.common.blobstore.BlobStore;
 import org.elasticsearch.common.blobstore.BlobStoreException;
-import org.elasticsearch.common.blobstore.OperationPurpose;
 import org.elasticsearch.common.blobstore.url.http.HttpURLBlobContainer;
 import org.elasticsearch.common.blobstore.url.http.URLHttpClient;
 import org.elasticsearch.common.blobstore.url.http.URLHttpClientSettings;
@@ -23,10 +22,8 @@
 import org.elasticsearch.common.unit.ByteSizeValue;
 import org.elasticsearch.core.CheckedFunction;
 
-import java.io.IOException;
 import java.net.MalformedURLException;
 import java.net.URL;
-import java.util.Iterator;
 import java.util.List;
 
 /**
@@ -109,11 +106,6 @@ public BlobContainer blobContainer(BlobPath blobPath) {
         }
     }
 
-    @Override
-    public void deleteBlobsIgnoringIfNotExists(OperationPurpose purpose, Iterator<String> blobNames) throws IOException {
-        throw new UnsupportedOperationException("Bulk deletes are not supported in URL repositories");
-    }
-
     @Override
     public void close() {
         // nothing to do here...

plugins/repository-hdfs/src/main/java/org/elasticsearch/repositories/hdfs/HdfsBlobStore.java

@@ -16,10 +16,8 @@
 import org.elasticsearch.common.blobstore.BlobContainer;
 import org.elasticsearch.common.blobstore.BlobPath;
 import org.elasticsearch.common.blobstore.BlobStore;
-import org.elasticsearch.common.blobstore.OperationPurpose;
 
 import java.io.IOException;
-import java.util.Iterator;
 
 final class HdfsBlobStore implements BlobStore {
 
@@ -72,11 +70,6 @@ public BlobContainer blobContainer(BlobPath path) {
         return new HdfsBlobContainer(path, this, buildHdfsPath(path), bufferSize, securityContext, replicationFactor);
     }
 
-    @Override
-    public void deleteBlobsIgnoringIfNotExists(OperationPurpose purpose, Iterator<String> blobNames) throws IOException {
-        throw new UnsupportedOperationException("Bulk deletes are not supported in Hdfs repositories");
-    }
-
     private Path buildHdfsPath(BlobPath blobPath) {
         final Path path = translateToHdfsPath(blobPath);
         if (readOnly == false) {

plugins/repository-hdfs/src/test/java/org/elasticsearch/repositories/hdfs/HdfsBlobStoreRepositoryTests.java

@@ -46,11 +46,6 @@ public void testSnapshotAndRestore() throws Exception {
         testSnapshotAndRestore(false);
     }
 
-    @Override
-    public void testBlobStoreBulkDeletion() throws Exception {
-        // HDFS does not implement bulk deletion from different BlobContainers
-    }
-
     @Override
     protected Collection<Class<? extends Plugin>> nodePlugins() {
         return Collections.singletonList(HdfsPlugin.class);

server/src/internalClusterTest/java/org/elasticsearch/repositories/blobstore/BlobStoreRepositoryOperationPurposeIT.java

@@ -36,7 +36,6 @@
 import java.io.InputStream;
 import java.io.OutputStream;
 import java.util.Collection;
-import java.util.Iterator;
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 
@@ -136,11 +135,6 @@ public BlobContainer blobContainer(BlobPath path) {
             return new AssertingBlobContainer(delegateBlobStore.blobContainer(path));
         }
 
-        @Override
-        public void deleteBlobsIgnoringIfNotExists(OperationPurpose purpose, Iterator<String> blobNames) throws IOException {
-            delegateBlobStore.deleteBlobsIgnoringIfNotExists(purpose, blobNames);
-        }
-
         @Override
         public void close() throws IOException {
             delegateBlobStore.close();

server/src/main/java/org/elasticsearch/common/blobstore/BlobStore.java

@@ -9,9 +9,7 @@
 package org.elasticsearch.common.blobstore;
 
 import java.io.Closeable;
-import java.io.IOException;
 import java.util.Collections;
-import java.util.Iterator;
 import java.util.Map;
 
 /**
@@ -28,14 +26,6 @@ public interface BlobStore extends Closeable {
      */
     BlobContainer blobContainer(BlobPath path);
 
-    /**
-     * Delete all the provided blobs from the blob store. Each blob could belong to a different {@code BlobContainer}
-     *
-     * @param purpose   the purpose of the delete operation
-     * @param blobNames the blobs to be deleted
-     */
-    void deleteBlobsIgnoringIfNotExists(OperationPurpose purpose, Iterator<String> blobNames) throws IOException;
-
     /**
      * Returns statistics on the count of operations that have been performed on this blob store
      */

server/src/main/java/org/elasticsearch/common/blobstore/fs/FsBlobContainer.java

@@ -177,7 +177,7 @@ public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IO
 
     @Override
     public void deleteBlobsIgnoringIfNotExists(OperationPurpose purpose, Iterator<String> blobNames) throws IOException {
-        blobStore.deleteBlobsIgnoringIfNotExists(purpose, Iterators.map(blobNames, blobName -> path.resolve(blobName).toString()));
+        blobStore.deleteBlobs(Iterators.map(blobNames, blobName -> path.resolve(blobName).toString()));
     }
 
     @Override

server/src/main/java/org/elasticsearch/common/blobstore/fs/FsBlobStore.java

@@ -13,7 +13,6 @@
 import org.elasticsearch.common.blobstore.BlobContainer;
 import org.elasticsearch.common.blobstore.BlobPath;
 import org.elasticsearch.common.blobstore.BlobStore;
-import org.elasticsearch.common.blobstore.OperationPurpose;
 import org.elasticsearch.core.IOUtils;
 
 import java.io.IOException;
@@ -70,8 +69,7 @@ public BlobContainer blobContainer(BlobPath path) {
         return new FsBlobContainer(this, path, f);
     }
 
-    @Override
-    public void deleteBlobsIgnoringIfNotExists(OperationPurpose purpose, Iterator<String> blobNames) throws IOException {
+    void deleteBlobs(Iterator<String> blobNames) throws IOException {
         IOException ioe = null;
         long suppressedExceptions = 0;
         while (blobNames.hasNext()) {

server/src/test/java/org/elasticsearch/repositories/blobstore/BlobStoreRepositoryDeleteThrottlingTests.java

@@ -35,7 +35,6 @@
 import java.io.OutputStream;
 import java.util.Collection;
 import java.util.Collections;
-import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
@@ -100,11 +99,6 @@ public BlobContainer blobContainer(BlobPath path) {
             return new ConcurrencyLimitingBlobContainer(delegate.blobContainer(path), activeIndices, countDownLatch);
         }
 
-        @Override
-        public void deleteBlobsIgnoringIfNotExists(OperationPurpose purpose, Iterator<String> blobNames) throws IOException {
-            delegate.deleteBlobsIgnoringIfNotExists(purpose, blobNames);
-        }
-
         @Override
         public void close() throws IOException {
             delegate.close();

test/external-modules/latency-simulating-directory/src/main/java/org/elasticsearch/test/simulatedlatencyrepo/LatencySimulatingBlobStoreRepository.java

@@ -24,7 +24,6 @@
 
 import java.io.IOException;
 import java.io.InputStream;
-import java.util.Iterator;
 
 class LatencySimulatingBlobStoreRepository extends FsRepository {
 
@@ -53,11 +52,6 @@ public BlobContainer blobContainer(BlobPath path) {
                 return new LatencySimulatingBlobContainer(blobContainer);
             }
 
-            @Override
-            public void deleteBlobsIgnoringIfNotExists(OperationPurpose purpose, Iterator<String> blobNames) throws IOException {
-                fsBlobStore.deleteBlobsIgnoringIfNotExists(purpose, blobNames);
-            }
-
             @Override
             public void close() throws IOException {
                 fsBlobStore.close();

test/framework/src/main/java/org/elasticsearch/repositories/blobstore/ESBlobStoreRepositoryIntegTestCase.java

@@ -48,7 +48,6 @@
 import java.io.IOException;
 import java.io.InputStream;
 import java.nio.file.NoSuchFileException;
-import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.HashMap;
 import java.util.HashSet;
@@ -70,7 +69,6 @@
 import static org.elasticsearch.test.hamcrest.ElasticsearchAssertions.assertHitCount;
 import static org.hamcrest.Matchers.equalTo;
 import static org.hamcrest.Matchers.greaterThan;
-import static org.hamcrest.Matchers.hasKey;
 import static org.hamcrest.Matchers.instanceOf;
 import static org.hamcrest.Matchers.is;
 import static org.hamcrest.Matchers.notNullValue;
@@ -524,39 +522,6 @@ public void testIndicesDeletedFromRepository() throws Exception {
         assertAcked(clusterAdmin().prepareDeleteSnapshot(TEST_REQUEST_TIMEOUT, repoName, "test-snap2").get());
     }
 
-    public void testBlobStoreBulkDeletion() throws Exception {
-        Map<BlobPath, List<String>> expectedBlobsPerContainer = new HashMap<>();
-        try (BlobStore store = newBlobStore()) {
-            List<String> blobsToDelete = new ArrayList<>();
-            int numberOfContainers = randomIntBetween(2, 5);
-            for (int i = 0; i < numberOfContainers; i++) {
-                BlobPath containerPath = BlobPath.EMPTY.add(randomIdentifier());
-                final BlobContainer container = store.blobContainer(containerPath);
-                int numberOfBlobsPerContainer = randomIntBetween(5, 10);
-                for (int j = 0; j < numberOfBlobsPerContainer; j++) {
-                    byte[] bytes = randomBytes(randomInt(100));
-                    String blobName = randomAlphaOfLength(10);
-                    container.writeBlob(randomPurpose(), blobName, new BytesArray(bytes), false);
-                    if (randomBoolean()) {
-                        blobsToDelete.add(containerPath.buildAsString() + blobName);
-                    } else {
-                        expectedBlobsPerContainer.computeIfAbsent(containerPath, unused -> new ArrayList<>()).add(blobName);
-                    }
-                }
-            }
-
-            store.deleteBlobsIgnoringIfNotExists(randomPurpose(), blobsToDelete.iterator());
-            for (var containerEntry : expectedBlobsPerContainer.entrySet()) {
-                BlobContainer blobContainer = store.blobContainer(containerEntry.getKey());
-                Map<String, BlobMetadata> blobsInContainer = blobContainer.listBlobs(randomPurpose());
-                for (String expectedBlob : containerEntry.getValue()) {
-                    assertThat(blobsInContainer, hasKey(expectedBlob));
-                }
-                blobContainer.delete(randomPurpose());
-            }
-        }
-    }
-
     public void testDanglingShardLevelBlobCleanup() throws Exception {
         final var repoName = createRepository(randomRepositoryName());
         final var client = client();