[Backport 2.x]Create Remote Object managers and use them in orchestration from Remo…

server/src/internalClusterTest/java/org/opensearch/gateway/remote/RemoteClusterStateServiceIT.java

@@ -26,13 +26,13 @@
 import java.util.function.Function;
 import java.util.stream.Collectors;
 
-import static org.opensearch.gateway.remote.RemoteClusterStateService.COORDINATION_METADATA;
-import static org.opensearch.gateway.remote.RemoteClusterStateService.CUSTOM_METADATA;
-import static org.opensearch.gateway.remote.RemoteClusterStateService.DELIMITER;
-import static org.opensearch.gateway.remote.RemoteClusterStateService.METADATA_FILE_PREFIX;
 import static org.opensearch.gateway.remote.RemoteClusterStateService.REMOTE_CLUSTER_STATE_ENABLED_SETTING;
-import static org.opensearch.gateway.remote.RemoteClusterStateService.SETTING_METADATA;
-import static org.opensearch.gateway.remote.RemoteClusterStateService.TEMPLATES_METADATA;
+import static org.opensearch.gateway.remote.RemoteClusterStateUtils.DELIMITER;
+import static org.opensearch.gateway.remote.RemoteClusterStateUtils.METADATA_FILE_PREFIX;
+import static org.opensearch.gateway.remote.model.RemoteCoordinationMetadata.COORDINATION_METADATA;
+import static org.opensearch.gateway.remote.model.RemoteCustomMetadata.CUSTOM_METADATA;
+import static org.opensearch.gateway.remote.model.RemotePersistentSettingsMetadata.SETTING_METADATA;
+import static org.opensearch.gateway.remote.model.RemoteTemplatesMetadata.TEMPLATES_METADATA;
 
 @OpenSearchIntegTestCase.ClusterScope(scope = OpenSearchIntegTestCase.Scope.TEST, numDataNodes = 0)
 public class RemoteClusterStateServiceIT extends RemoteStoreBaseIntegTestCase {

server/src/internalClusterTest/java/org/opensearch/remotestore/RemoteStoreClusterStateRestoreIT.java

@@ -57,6 +57,7 @@
 import static org.opensearch.cluster.metadata.Metadata.CLUSTER_READ_ONLY_BLOCK;
 import static org.opensearch.cluster.metadata.Metadata.SETTING_READ_ONLY_SETTING;
 import static org.opensearch.gateway.remote.RemoteClusterStateService.REMOTE_CLUSTER_STATE_ENABLED_SETTING;
+import static org.opensearch.gateway.remote.RemoteClusterStateUtils.encodeString;
 import static org.opensearch.indices.ShardLimitValidator.SETTING_CLUSTER_MAX_SHARDS_PER_NODE;
 import static org.opensearch.repositories.blobstore.BlobStoreRepository.SYSTEM_REPOSITORY_SETTING;
 import static org.opensearch.test.hamcrest.OpenSearchAssertions.assertAcked;
@@ -326,9 +327,7 @@ public void testFullClusterRestoreManifestFilePointsToInvalidIndexMetadataPathTh
         // Step - 3 Delete index metadata file in remote
         try {
             Files.move(
-                segmentRepoPath.resolve(
-                    RemoteClusterStateService.encodeString(clusterName) + "/cluster-state/" + prevClusterUUID + "/index"
-                ),
+                segmentRepoPath.resolve(encodeString(clusterName) + "/cluster-state/" + prevClusterUUID + "/index"),
                 segmentRepoPath.resolve("cluster-state/")
             );
         } catch (IOException e) {
@@ -354,10 +353,7 @@ public void testRemoteStateFullRestart() throws Exception {
         try {
             Files.move(
                 segmentRepoPath.resolve(
-                    RemoteClusterStateService.encodeString(clusterService().state().getClusterName().value())
-                        + "/cluster-state/"
-                        + prevClusterUUID
-                        + "/manifest"
+                    encodeString(clusterService().state().getClusterName().value()) + "/cluster-state/" + prevClusterUUID + "/manifest"
                 ),
                 segmentRepoPath.resolve("cluster-state/")
             );

server/src/main/java/org/opensearch/cluster/routing/remote/InternalRemoteRoutingTableService.java

@@ -33,7 +33,7 @@
 import org.opensearch.core.action.ActionListener;
 import org.opensearch.core.common.bytes.BytesReference;
 import org.opensearch.gateway.remote.ClusterMetadataManifest;
-import org.opensearch.gateway.remote.RemoteClusterStateService;
+import org.opensearch.gateway.remote.RemoteStateTransferException;
 import org.opensearch.gateway.remote.routingtable.RemoteIndexRoutingTable;
 import org.opensearch.index.remote.RemoteStoreEnums;
 import org.opensearch.index.remote.RemoteStorePathStrategy;
@@ -52,6 +52,7 @@
 import java.util.function.Supplier;
 import java.util.stream.Collectors;
 
+import static org.opensearch.gateway.remote.RemoteClusterStateUtils.DELIMITER;
 import static org.opensearch.node.remotestore.RemoteStoreNodeAttribute.isRemoteRoutingTableEnabled;
 
 /**
@@ -87,7 +88,6 @@ public class InternalRemoteRoutingTableService extends AbstractLifecycleComponen
 
     public static final String INDEX_ROUTING_PATH_TOKEN = "index-routing";
     public static final String INDEX_ROUTING_FILE_PREFIX = "index_routing";
-    public static final String DELIMITER = "__";
     public static final String INDEX_ROUTING_METADATA_PREFIX = "indexRouting--";
 
     private static final Logger logger = LogManager.getLogger(InternalRemoteRoutingTableService.class);
@@ -175,10 +175,7 @@ public CheckedRunnable<IOException> getIndexRoutingAsyncAction(
                 )
             ),
             ex -> latchedActionListener.onFailure(
-                new RemoteClusterStateService.RemoteStateTransferException(
-                    "Exception in writing index to remote store: " + indexRouting.getIndex().toString(),
-                    ex
-                )
+                new RemoteStateTransferException("Exception in writing index to remote store: " + indexRouting.getIndex().toString(), ex)
             )
         );
 

server/src/main/java/org/opensearch/common/remote/AbstractRemoteWritableBlobEntity.java

@@ -42,6 +42,8 @@ public AbstractRemoteWritableBlobEntity(
 
     public abstract BlobPathParameters getBlobPathParameters();
 
+    public abstract String getType();
+
     public String getFullBlobName() {
         return blobName;
     }

server/src/main/java/org/opensearch/common/settings/ClusterSettings.java

@@ -182,6 +182,10 @@
 import java.util.Set;
 import java.util.function.Predicate;
 
+import static org.opensearch.gateway.remote.RemoteGlobalMetadataManager.GLOBAL_METADATA_UPLOAD_TIMEOUT_SETTING;
+import static org.opensearch.gateway.remote.RemoteIndexMetadataManager.INDEX_METADATA_UPLOAD_TIMEOUT_SETTING;
+import static org.opensearch.gateway.remote.RemoteManifestManager.METADATA_MANIFEST_UPLOAD_TIMEOUT_SETTING;
+
 /**
  * Encapsulates all valid cluster level settings.
  *
@@ -719,9 +723,9 @@ public void apply(Settings value, Settings current, Settings previous) {
                 // Remote cluster state settings
                 RemoteClusterStateCleanupManager.REMOTE_CLUSTER_STATE_CLEANUP_INTERVAL_SETTING,
                 RemoteClusterStateService.REMOTE_CLUSTER_STATE_ENABLED_SETTING,
-                RemoteClusterStateService.INDEX_METADATA_UPLOAD_TIMEOUT_SETTING,
-                RemoteClusterStateService.GLOBAL_METADATA_UPLOAD_TIMEOUT_SETTING,
-                RemoteClusterStateService.METADATA_MANIFEST_UPLOAD_TIMEOUT_SETTING,
+                INDEX_METADATA_UPLOAD_TIMEOUT_SETTING,
+                GLOBAL_METADATA_UPLOAD_TIMEOUT_SETTING,
+                METADATA_MANIFEST_UPLOAD_TIMEOUT_SETTING,
                 RemoteStoreNodeService.REMOTE_STORE_COMPATIBILITY_MODE_SETTING,
                 RemoteStoreNodeService.MIGRATION_DIRECTION_SETTING,
 

server/src/main/java/org/opensearch/gateway/remote/ClusterMetadataManifest.java

@@ -1158,8 +1158,7 @@ public String getComponent() {
         }
 
         public String getUploadedFilename() {
-            String[] splitPath = uploadedFilename.split("/");
-            return splitPath[splitPath.length - 1];
+            return uploadedFilename;
         }
 
         public String getIndexName() {

server/src/main/java/org/opensearch/gateway/remote/RemoteClusterStateCleanupManager.java

@@ -34,12 +34,9 @@
 import java.util.Set;
 import java.util.concurrent.atomic.AtomicBoolean;
 
-import static org.opensearch.gateway.remote.RemoteClusterStateService.GLOBAL_METADATA_FORMAT;
-import static org.opensearch.gateway.remote.RemoteClusterStateService.GLOBAL_METADATA_PATH_TOKEN;
-import static org.opensearch.gateway.remote.RemoteClusterStateService.INDEX_METADATA_FORMAT;
-import static org.opensearch.gateway.remote.RemoteClusterStateService.INDEX_PATH_TOKEN;
-import static org.opensearch.gateway.remote.RemoteClusterStateService.MANIFEST_FILE_PREFIX;
-import static org.opensearch.gateway.remote.RemoteClusterStateService.MANIFEST_PATH_TOKEN;
+import static org.opensearch.gateway.remote.RemoteClusterStateUtils.GLOBAL_METADATA_PATH_TOKEN;
+import static org.opensearch.gateway.remote.model.RemoteClusterMetadataManifest.MANIFEST;
+import static org.opensearch.gateway.remote.model.RemoteGlobalMetadata.GLOBAL_METADATA_FORMAT;
 
 /**
  * A Manager which provides APIs to clean up stale cluster state files and runs an async stale cleanup task
@@ -74,6 +71,7 @@
     private long lastCleanupAttemptStateVersion;
     private final ThreadPool threadpool;
     private final ClusterApplierService clusterApplierService;
+    private RemoteManifestManager remoteManifestManager;
 
     public RemoteClusterStateCleanupManager(RemoteClusterStateService remoteClusterStateService, ClusterService clusterService) {
         this.remoteClusterStateService = remoteClusterStateService;
@@ -89,6 +87,7 @@
 
     void start() {
         staleFileDeletionTask = new AsyncStaleFileDeletion(this);
+        remoteManifestManager = remoteClusterStateService.getRemoteManifestManager();
     }
 
     @Override
@@ -172,13 +171,17 @@
             Set<String> staleIndexMetadataPaths = new HashSet<>();
             Set<String> staleGlobalMetadataPaths = new HashSet<>();
             activeManifestBlobMetadata.forEach(blobMetadata -> {
-                ClusterMetadataManifest clusterMetadataManifest = remoteClusterStateService.fetchRemoteClusterMetadataManifest(
+                ClusterMetadataManifest clusterMetadataManifest = remoteManifestManager.fetchRemoteClusterMetadataManifest(
                     clusterName,
                     clusterUUID,
                     blobMetadata.name()
                 );
                 clusterMetadataManifest.getIndices()
-                    .forEach(uploadedIndexMetadata -> filesToKeep.add(uploadedIndexMetadata.getUploadedFilename()));
+                    .forEach(
+                        uploadedIndexMetadata -> filesToKeep.add(
+                            RemoteClusterStateUtils.getFormattedIndexFileName(uploadedIndexMetadata.getUploadedFilename())
+                        )
+                    );
                 if (clusterMetadataManifest.getCodecVersion() == ClusterMetadataManifest.CODEC_V1) {
                     filesToKeep.add(clusterMetadataManifest.getGlobalMetadataFileName());
                 } else if (clusterMetadataManifest.getCodecVersion() >= ClusterMetadataManifest.CODEC_V2) {
@@ -191,43 +194,38 @@
                 }
             });
             staleManifestBlobMetadata.forEach(blobMetadata -> {
-                ClusterMetadataManifest clusterMetadataManifest = remoteClusterStateService.fetchRemoteClusterMetadataManifest(
+                ClusterMetadataManifest clusterMetadataManifest = remoteManifestManager.fetchRemoteClusterMetadataManifest(
                     clusterName,
                     clusterUUID,
                     blobMetadata.name()
                 );
-                staleManifestPaths.add(new BlobPath().add(MANIFEST_PATH_TOKEN).buildAsString() + blobMetadata.name());
+                staleManifestPaths.add(
+                    remoteManifestManager.getManifestFolderPath(clusterName, clusterUUID).buildAsString() + blobMetadata.name()
+                );
                 if (clusterMetadataManifest.getCodecVersion() == ClusterMetadataManifest.CODEC_V1) {
                     addStaleGlobalMetadataPath(clusterMetadataManifest.getGlobalMetadataFileName(), filesToKeep, staleGlobalMetadataPaths);
                 } else if (clusterMetadataManifest.getCodecVersion() >= ClusterMetadataManifest.CODEC_V2) {
-                    addStaleGlobalMetadataPath(
-                        clusterMetadataManifest.getCoordinationMetadata().getUploadedFilename(),
-                        filesToKeep,
-                        staleGlobalMetadataPaths
-                    );
-                    addStaleGlobalMetadataPath(
-                        clusterMetadataManifest.getSettingsMetadata().getUploadedFilename(),
-                        filesToKeep,
-                        staleGlobalMetadataPaths
-                    );
-                    addStaleGlobalMetadataPath(
-                        clusterMetadataManifest.getTemplatesMetadata().getUploadedFilename(),
-                        filesToKeep,
-                        staleGlobalMetadataPaths
-                    );
+                    if (filesToKeep.contains(clusterMetadataManifest.getCoordinationMetadata().getUploadedFilename()) == false) {
+                        staleGlobalMetadataPaths.add(clusterMetadataManifest.getCoordinationMetadata().getUploadedFilename());
+                    }
+                    if (filesToKeep.contains(clusterMetadataManifest.getSettingsMetadata().getUploadedFilename()) == false) {
+                        staleGlobalMetadataPaths.add(clusterMetadataManifest.getSettingsMetadata().getUploadedFilename());
+                    }
+                    if (filesToKeep.contains(clusterMetadataManifest.getTemplatesMetadata().getUploadedFilename()) == false) {
+                        staleGlobalMetadataPaths.add(clusterMetadataManifest.getTemplatesMetadata().getUploadedFilename());
+                    }
                     clusterMetadataManifest.getCustomMetadataMap()
                         .values()
-                        .forEach(
-                            attribute -> addStaleGlobalMetadataPath(attribute.getUploadedFilename(), filesToKeep, staleGlobalMetadataPaths)
-                        );
+                        .stream()
+                        .map(ClusterMetadataManifest.UploadedMetadataAttribute::getUploadedFilename)
+                        .filter(file -> filesToKeep.contains(file) == false)
+                        .forEach(staleGlobalMetadataPaths::add);
                 }
 
                 clusterMetadataManifest.getIndices().forEach(uploadedIndexMetadata -> {
-                    if (filesToKeep.contains(uploadedIndexMetadata.getUploadedFilename()) == false) {
-                        staleIndexMetadataPaths.add(
-                            new BlobPath().add(INDEX_PATH_TOKEN).add(uploadedIndexMetadata.getIndexUUID()).buildAsString()
-                                + INDEX_METADATA_FORMAT.blobName(uploadedIndexMetadata.getUploadedFilename())
-                        );
+                    String fileName = RemoteClusterStateUtils.getFormattedIndexFileName(uploadedIndexMetadata.getUploadedFilename());
+                    if (filesToKeep.contains(fileName) == false) {
+                        staleIndexMetadataPaths.add(fileName);
                     }
                 });
             });
@@ -237,9 +235,9 @@
                 return;
             }
 
-            deleteStalePaths(clusterName, clusterUUID, new ArrayList<>(staleGlobalMetadataPaths));
-            deleteStalePaths(clusterName, clusterUUID, new ArrayList<>(staleIndexMetadataPaths));
-            deleteStalePaths(clusterName, clusterUUID, new ArrayList<>(staleManifestPaths));
+            deleteStalePaths(new ArrayList<>(staleGlobalMetadataPaths));
+            deleteStalePaths(new ArrayList<>(staleIndexMetadataPaths));
+            deleteStalePaths(new ArrayList<>(staleManifestPaths));
         } catch (IllegalStateException e) {
             logger.error("Error while fetching Remote Cluster Metadata manifests", e);
         } catch (IOException e) {
@@ -267,8 +265,8 @@
         try {
             getBlobStoreTransferService().listAllInSortedOrderAsync(
                 ThreadPool.Names.REMOTE_PURGE,
-                remoteClusterStateService.getManifestFolderPath(clusterName, clusterUUID),
-                MANIFEST_FILE_PREFIX,
+                remoteManifestManager.getManifestFolderPath(clusterName, clusterUUID),
+                MANIFEST,
                 Integer.MAX_VALUE,
                 new ActionListener<>() {
                     @Override
@@ -312,7 +310,11 @@
         clusterUUIDs.forEach(
             clusterUUID -> getBlobStoreTransferService().deleteAsync(
                 ThreadPool.Names.REMOTE_PURGE,
-                remoteClusterStateService.getCusterMetadataBasePath(clusterName, clusterUUID),
+                RemoteClusterStateUtils.getClusterMetadataBasePath(
+                    remoteClusterStateService.getBlobStoreRepository(),
+                    clusterName,
+                    clusterUUID
+                ),
                 new ActionListener<>() {
                     @Override
                     public void onResponse(Void unused) {
@@ -336,12 +338,9 @@
     }
 
     // package private for testing
-    void deleteStalePaths(String clusterName, String clusterUUID, List<String> stalePaths) throws IOException {
+    void deleteStalePaths(List<String> stalePaths) throws IOException {
         logger.debug(String.format(Locale.ROOT, "Deleting stale files from remote - %s", stalePaths));
-        getBlobStoreTransferService().deleteBlobs(
-            remoteClusterStateService.getCusterMetadataBasePath(clusterName, clusterUUID),
-            stalePaths
-        );
+        getBlobStoreTransferService().deleteBlobs(BlobPath.cleanPath(), stalePaths);
     }
 
     /**