Introduce interface changes to support read/write blob with object me…

…tadata (opensearch-project#13023)

* Introduce interface changes to read/write blob with object metadata
---------
Signed-off-by: Sandeep Kumawat <skumwt@amazon.com>
Co-authored-by: Sandeep Kumawat <skumwt@amazon.com>
(cherry picked from commit 9b0f578)
Signed-off-by: Sandeep Kumawat <2025sandeepkumawat@gmail.com>

plugins/repository-s3/src/main/java/org/opensearch/repositories/s3/S3BlobContainer.java

@@ -325,7 +325,7 @@ public void readBlobAsync(String blobName, ActionListener<ReadContext> listener)
                             );
                         }
                     }
-                    listener.onResponse(new ReadContext(blobSize, blobPartInputStreamFutures, blobChecksum));
+                    listener.onResponse(new ReadContext.Builder(blobSize, blobPartInputStreamFutures).blobChecksum(blobChecksum).build());
                 } catch (Exception ex) {
                     listener.onFailure(ex);
                 }

plugins/repository-s3/src/test/java/org/opensearch/repositories/s3/S3BlobContainerMockClientTests.java

@@ -30,7 +30,7 @@
 
 import org.apache.lucene.store.IndexInput;
 import org.opensearch.cluster.metadata.RepositoryMetadata;
-import org.opensearch.common.CheckedTriFunction;
+import org.opensearch.common.CheckedConsumer;
 import org.opensearch.common.StreamContext;
 import org.opensearch.common.blobstore.BlobPath;
 import org.opensearch.common.blobstore.stream.write.StreamContextSupplier;
@@ -52,6 +52,7 @@
 import org.opensearch.test.OpenSearchTestCase;
 import org.opensearch.threadpool.Scheduler;
 import org.junit.After;
+import org.junit.Assert;
 import org.junit.Before;
 
 import java.io.IOException;
@@ -513,24 +514,30 @@ private void testWriteBlobByStreams(boolean expectException, boolean throwExcept
             exceptionRef.set(ex);
             countDownLatch.countDown();
         });
-        blobContainer.asyncBlobUpload(new WriteContext("write_blob_by_streams_max_retries", new StreamContextSupplier() {
-            @Override
-            public StreamContext supplyStreamContext(long partSize) {
-                return new StreamContext(new CheckedTriFunction<Integer, Long, Long, InputStreamContainer, IOException>() {
-                    @Override
-                    public InputStreamContainer apply(Integer partNo, Long size, Long position) throws IOException {
-                        InputStream inputStream = new OffsetRangeIndexInputStream(new ByteArrayIndexInput("desc", bytes), size, position);
-                        openInputStreams.add(inputStream);
-                        return new InputStreamContainer(inputStream, size, position);
-                    }
-                }, partSize, calculateLastPartSize(bytes.length, partSize), calculateNumberOfParts(bytes.length, partSize));
-            }
-        }, bytes.length, false, WritePriority.NORMAL, uploadSuccess -> {
+
+        StreamContextSupplier streamContextSupplier = partSize -> new StreamContext((partNo, size, position) -> {
+            InputStream inputStream = new OffsetRangeIndexInputStream(new ByteArrayIndexInput("desc", bytes), size, position);
+            openInputStreams.add(inputStream);
+            return new InputStreamContainer(inputStream, size, position);
+        }, partSize, calculateLastPartSize(bytes.length, partSize), calculateNumberOfParts(bytes.length, partSize));
+
+        CheckedConsumer<Boolean, IOException> uploadFinalizer = uploadSuccess -> {
             assertTrue(uploadSuccess);
             if (throwExceptionOnFinalizeUpload) {
                 throw new RuntimeException();
             }
-        }, false, null), completionListener);
+        };
+
+        WriteContext writeContext = new WriteContext.Builder().fileName("write_blob_by_streams_max_retries")
+            .streamContextSupplier(streamContextSupplier)
+            .fileSize(bytes.length)
+            .failIfAlreadyExists(false)
+            .writePriority(WritePriority.NORMAL)
+            .uploadFinalizer(uploadFinalizer)
+            .doRemoteDataIntegrityCheck(false)
+            .build();
+
+        blobContainer.asyncBlobUpload(writeContext, completionListener);
 
         assertTrue(countDownLatch.await(5000, TimeUnit.SECONDS));
         // wait for completableFuture to finish
@@ -563,24 +570,30 @@ private void testWriteBlobByStreamsLargeBlob(boolean expectException, boolean th
             countDownLatch.countDown();
         });
         List<InputStream> openInputStreams = new ArrayList<>();
-        blobContainer.asyncBlobUpload(new WriteContext("write_large_blob", new StreamContextSupplier() {
-            @Override
-            public StreamContext supplyStreamContext(long partSize) {
-                return new StreamContext(new CheckedTriFunction<Integer, Long, Long, InputStreamContainer, IOException>() {
-                    @Override
-                    public InputStreamContainer apply(Integer partNo, Long size, Long position) throws IOException {
-                        InputStream inputStream = new OffsetRangeIndexInputStream(new ZeroIndexInput("desc", blobSize), size, position);
-                        openInputStreams.add(inputStream);
-                        return new InputStreamContainer(inputStream, size, position);
-                    }
-                }, partSize, calculateLastPartSize(blobSize, partSize), calculateNumberOfParts(blobSize, partSize));
-            }
-        }, blobSize, false, WritePriority.NORMAL, uploadSuccess -> {
+
+        StreamContextSupplier streamContextSupplier = partSize1 -> new StreamContext((partNo, size, position) -> {
+            InputStream inputStream = new OffsetRangeIndexInputStream(new ZeroIndexInput("desc", blobSize), size, position);
+            openInputStreams.add(inputStream);
+            return new InputStreamContainer(inputStream, size, position);
+        }, partSize1, calculateLastPartSize(blobSize, partSize1), calculateNumberOfParts(blobSize, partSize1));
+
+        CheckedConsumer<Boolean, IOException> uploadFinalizer = uploadSuccess -> {
             assertTrue(uploadSuccess);
             if (throwExceptionOnFinalizeUpload) {
                 throw new RuntimeException();
             }
-        }, false, null), completionListener);
+        };
+
+        WriteContext writeContext = new WriteContext.Builder().fileName("write_large_blob")
+            .streamContextSupplier(streamContextSupplier)
+            .fileSize(blobSize)
+            .failIfAlreadyExists(false)
+            .writePriority(WritePriority.NORMAL)
+            .uploadFinalizer(uploadFinalizer)
+            .doRemoteDataIntegrityCheck(false)
+            .build();
+
+        blobContainer.asyncBlobUpload(writeContext, completionListener);
 
         assertTrue(countDownLatch.await(5000, TimeUnit.SECONDS));
         if (expectException || throwExceptionOnFinalizeUpload) {
@@ -695,20 +708,23 @@ private void testLargeFilesRedirectedToSlowSyncClient(boolean expectException, W
 
         List<InputStream> openInputStreams = new ArrayList<>();
         final S3BlobContainer s3BlobContainer = Mockito.spy(new S3BlobContainer(blobPath, blobStore));
-        s3BlobContainer.asyncBlobUpload(new WriteContext("write_large_blob", new StreamContextSupplier() {
-            @Override
-            public StreamContext supplyStreamContext(long partSize) {
-                return new StreamContext(new CheckedTriFunction<Integer, Long, Long, InputStreamContainer, IOException>() {
-                    @Override
-                    public InputStreamContainer apply(Integer partNo, Long size, Long position) throws IOException {
-                        InputStream inputStream = new OffsetRangeIndexInputStream(new ZeroIndexInput("desc", blobSize), size, position);
-                        openInputStreams.add(inputStream);
-                        return new InputStreamContainer(inputStream, size, position);
-                    }
-                }, partSize, calculateLastPartSize(blobSize, partSize), calculateNumberOfParts(blobSize, partSize));
-            }
-        }, blobSize, false, writePriority, uploadSuccess -> { assertTrue(uploadSuccess); }, false, null), completionListener);
 
+        StreamContextSupplier streamContextSupplier = partSize1 -> new StreamContext((partNo, size, position) -> {
+            InputStream inputStream = new OffsetRangeIndexInputStream(new ZeroIndexInput("desc", blobSize), size, position);
+            openInputStreams.add(inputStream);
+            return new InputStreamContainer(inputStream, size, position);
+        }, partSize1, calculateLastPartSize(blobSize, partSize1), calculateNumberOfParts(blobSize, partSize1));
+
+        WriteContext writeContext = new WriteContext.Builder().fileName("write_large_blob")
+            .streamContextSupplier(streamContextSupplier)
+            .fileSize(blobSize)
+            .failIfAlreadyExists(false)
+            .writePriority(writePriority)
+            .uploadFinalizer(Assert::assertTrue)
+            .doRemoteDataIntegrityCheck(false)
+            .build();
+
+        s3BlobContainer.asyncBlobUpload(writeContext, completionListener);
         assertTrue(countDownLatch.await(5000, TimeUnit.SECONDS));
         if (expectException) {
             assertNotNull(exceptionRef.get());

plugins/repository-s3/src/test/java/org/opensearch/repositories/s3/S3BlobContainerRetriesTests.java

@@ -37,7 +37,6 @@
 
 import org.apache.http.HttpStatus;
 import org.opensearch.cluster.metadata.RepositoryMetadata;
-import org.opensearch.common.CheckedTriFunction;
 import org.opensearch.common.Nullable;
 import org.opensearch.common.StreamContext;
 import org.opensearch.common.SuppressForbidden;
@@ -375,22 +374,24 @@ public void testWriteBlobByStreamsWithRetries() throws Exception {
             exceptionRef.set(ex);
             countDownLatch.countDown();
         });
-        blobContainer.asyncBlobUpload(new WriteContext("write_blob_by_streams_max_retries", new StreamContextSupplier() {
-            @Override
-            public StreamContext supplyStreamContext(long partSize) {
-                return new StreamContext(new CheckedTriFunction<Integer, Long, Long, InputStreamContainer, IOException>() {
-                    @Override
-                    public InputStreamContainer apply(Integer partNo, Long size, Long position) throws IOException {
-                        InputStream inputStream = new OffsetRangeIndexInputStream(new ByteArrayIndexInput("desc", bytes), size, position);
-                        openInputStreams.add(inputStream);
-                        return new InputStreamContainer(inputStream, size, position);
-                    }
-                }, partSize, calculateLastPartSize(bytes.length, partSize), calculateNumberOfParts(bytes.length, partSize));
-            }
-        }, bytes.length, false, WritePriority.NORMAL, Assert::assertTrue, false, null), completionListener);
 
+        StreamContextSupplier streamContextSupplier = partSize -> new StreamContext((partNo, size, position) -> {
+            InputStream inputStream = new OffsetRangeIndexInputStream(new ByteArrayIndexInput("desc", bytes), size, position);
+            openInputStreams.add(inputStream);
+            return new InputStreamContainer(inputStream, size, position);
+        }, partSize, calculateLastPartSize(bytes.length, partSize), calculateNumberOfParts(bytes.length, partSize));
+
+        WriteContext writeContext = new WriteContext.Builder().fileName("write_blob_by_streams_max_retries")
+            .streamContextSupplier(streamContextSupplier)
+            .fileSize(bytes.length)
+            .failIfAlreadyExists(false)
+            .writePriority(WritePriority.NORMAL)
+            .uploadFinalizer(Assert::assertTrue)
+            .doRemoteDataIntegrityCheck(false)
+            .build();
+
+        blobContainer.asyncBlobUpload(writeContext, completionListener);
         assertTrue(countDownLatch.await(5000, TimeUnit.SECONDS));
-
         assertThat(countDown.isCountedDown(), is(true));
 
         openInputStreams.forEach(inputStream -> {

server/src/internalClusterTest/java/org/opensearch/remotestore/multipart/mocks/MockFsAsyncBlobContainer.java

@@ -131,7 +131,7 @@ public void readBlobAsync(String blobName, ActionListener<ReadContext> listener)
                     InputStreamContainer blobPartStream = new InputStreamContainer(readBlob(blobName, offset, partSize), partSize, offset);
                     blobPartStreams.add(() -> CompletableFuture.completedFuture(blobPartStream));
                 }
-                ReadContext blobReadContext = new ReadContext(contentLength, blobPartStreams, null);
+                ReadContext blobReadContext = new ReadContext.Builder(contentLength, blobPartStreams).build();
                 listener.onResponse(blobReadContext);
             } catch (Exception e) {
                 listener.onFailure(e);

server/src/main/java/org/opensearch/common/blobstore/BlobContainer.java

@@ -32,6 +32,7 @@
 
 package org.opensearch.common.blobstore;
 
+import org.opensearch.common.annotation.ExperimentalApi;
 import org.opensearch.core.action.ActionListener;
 
 import java.io.IOException;
@@ -77,6 +78,20 @@ public interface BlobContainer {
      */
     InputStream readBlob(String blobName) throws IOException;
 
+    /**
+     * Creates a new {@link BlobDownloadResponse} for the given blob name.
+     *
+     * @param   blobName
+     *          The name of the blob to get an {@link InputStream} for.
+     * @return  The {@link BlobDownloadResponse} of the blob.
+     * @throws  NoSuchFileException if the blob does not exist
+     * @throws  IOException if the blob can not be read.
+     */
+    @ExperimentalApi
+    default BlobDownloadResponse readBlobWithMetadata(String blobName) throws IOException {
+        throw new UnsupportedOperationException("readBlobWithMetadata is not implemented yet");
+    };
+
     /**
      * Creates a new {@link InputStream} that can be used to read the given blob starting from
      * a specific {@code position} in the blob. The {@code length} is an indication of the
@@ -128,6 +143,36 @@ default long readBlobPreferredLength() {
      */
     void writeBlob(String blobName, InputStream inputStream, long blobSize, boolean failIfAlreadyExists) throws IOException;
 
+    /**
+     * Reads blob content from the input stream and writes it to the container in a new blob with the given name, and metadata.
+     * This method assumes the container does not already contain a blob of the same blobName. If a blob by the
+     * same name already exists, the operation will fail and an {@link IOException} will be thrown.
+     *
+     * @param   blobName
+     *          The name of the blob to write the contents of the input stream to.
+     * @param   inputStream
+     *          The input stream from which to retrieve the bytes to write to the blob.
+     * @param   metadata
+     *          The metadata to be associate with the blob upload.
+     * @param   blobSize
+     *          The size of the blob to be written, in bytes.  It is implementation dependent whether
+     *          this value is used in writing the blob to the repository.
+     * @param   failIfAlreadyExists
+     *          whether to throw a FileAlreadyExistsException if the given blob already exists
+     * @throws  FileAlreadyExistsException if failIfAlreadyExists is true and a blob by the same name already exists
+     * @throws  IOException if the input stream could not be read, or the target blob could not be written to.
+     */
+    @ExperimentalApi
+    default void writeBlobWithMetadata(
+        String blobName,
+        InputStream inputStream,
+        Map<String, String> metadata,
+        long blobSize,
+        boolean failIfAlreadyExists
+    ) throws IOException {
+        throw new UnsupportedOperationException("writeBlobWithMetadata is not implemented yet");
+    };
+
     /**
      * Reads blob content from the input stream and writes it to the container in a new blob with the given name,
      * using an atomic write operation if the implementation supports it.
@@ -149,6 +194,38 @@ default long readBlobPreferredLength() {
      */
     void writeBlobAtomic(String blobName, InputStream inputStream, long blobSize, boolean failIfAlreadyExists) throws IOException;
 
+    /**
+     * Reads blob content from the input stream and writes it to the container in a new blob with the given name, and metadata
+     * using an atomic write operation if the implementation supports it.
+     * <p>
+     * This method assumes the container does not already contain a blob of the same blobName. If a blob by the
+     * same name already exists, the operation will fail and an {@link IOException} will be thrown.
+     *
+     * @param   blobName
+     *          The name of the blob to write the contents of the input stream to.
+     * @param   inputStream
+     *          The input stream from which to retrieve the bytes to write to the blob.
+     * @param   metadata
+     *          The metadata to be associate with the blob upload.
+     * @param   blobSize
+     *          The size of the blob to be written, in bytes.  It is implementation dependent whether
+     *          this value is used in writing the blob to the repository.
+     * @param   failIfAlreadyExists
+     *          whether to throw a FileAlreadyExistsException if the given blob already exists
+     * @throws  FileAlreadyExistsException if failIfAlreadyExists is true and a blob by the same name already exists
+     * @throws  IOException if the input stream could not be read, or the target blob could not be written to.
+     */
+    @ExperimentalApi
+    default void writeBlobAtomicWithMetadata(
+        String blobName,
+        InputStream inputStream,
+        Map<String, String> metadata,
+        long blobSize,
+        boolean failIfAlreadyExists
+    ) throws IOException {
+        throw new UnsupportedOperationException("writeBlobAtomicWithMetadata is not implemented yet");
+    };
+
     /**
      * Deletes this container and all its contents from the repository.
      *

server/src/main/java/org/opensearch/common/blobstore/BlobDownloadResponse.java

@@ -0,0 +1,45 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * The OpenSearch Contributors require contributions made to
+ * this file be licensed under the Apache-2.0 license or a
+ * compatible open source license.
+ */
+
+package org.opensearch.common.blobstore;
+
+import java.io.InputStream;
+import java.util.Map;
+
+/**
+ * Represents the response from a blob download operation, containing both the
+ * input stream of the blob content and the associated metadata.
+ *
+ * @opensearch.experimental
+ */
+public class BlobDownloadResponse {
+
+    /**
+     * Downloaded blob InputStream
+     */
+    private final InputStream inputStream;
+
+    /**
+     * Metadata of the downloaded blob
+     */
+    private final Map<String, String> metadata;
+
+    public InputStream getInputStream() {
+        return inputStream;
+    }
+
+    public Map<String, String> getMetadata() {
+        return metadata;
+    }
+
+    public BlobDownloadResponse(InputStream inputStream, Map<String, String> metadata) {
+        this.inputStream = inputStream;
+        this.metadata = metadata;
+    }
+
+}