[Extensions] Removing support for onIndexModule extension point

server/src/main/java/org/opensearch/extensions/ExtensionsManager.java

@@ -11,7 +11,6 @@
 import java.io.IOException;
 import java.io.InputStream;
 import java.net.InetAddress;
-import java.net.UnknownHostException;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.ArrayList;
@@ -37,7 +36,6 @@
 import org.opensearch.action.admin.cluster.state.ClusterStateResponse;
 import org.opensearch.client.node.NodeClient;
 import org.opensearch.cluster.ClusterSettingsResponse;
-import org.opensearch.cluster.node.DiscoveryNode;
 import org.opensearch.cluster.service.ClusterService;
 import org.opensearch.core.util.FileSystemUtils;
 import org.opensearch.common.io.stream.StreamInput;
@@ -58,12 +56,6 @@
 import org.opensearch.extensions.rest.RestActionsRequestHandler;
 import org.opensearch.extensions.settings.CustomSettingsRequestHandler;
 import org.opensearch.extensions.settings.RegisterCustomSettingsRequest;
-import org.opensearch.index.IndexModule;
-import org.opensearch.index.IndexService;
-import org.opensearch.index.IndicesModuleRequest;
-import org.opensearch.index.IndicesModuleResponse;
-import org.opensearch.index.shard.IndexEventListener;
-import org.opensearch.indices.cluster.IndicesClusterStateService;
 import org.opensearch.threadpool.ThreadPool;
 import org.opensearch.transport.ConnectTransportException;
 import org.opensearch.transport.TransportException;
@@ -80,8 +72,6 @@
  */
 public class ExtensionsManager {
     public static final String REQUEST_EXTENSION_ACTION_NAME = "internal:discovery/extensions";
-    public static final String INDICES_EXTENSION_POINT_ACTION_NAME = "indices:internal/extensions";
-    public static final String INDICES_EXTENSION_NAME_ACTION_NAME = "indices:internal/name";
     public static final String REQUEST_EXTENSION_CLUSTER_STATE = "internal:discovery/clusterstate";
     public static final String REQUEST_EXTENSION_CLUSTER_SETTINGS = "internal:discovery/clustersettings";
     public static final String REQUEST_EXTENSION_ENVIRONMENT_SETTINGS = "internal:discovery/enviornmentsettings";
@@ -466,125 +456,6 @@ TransportResponse handleExtensionRequest(ExtensionRequest extensionRequest) thro
         }
     }
 
-    public void onIndexModule(IndexModule indexModule) throws UnknownHostException {
-        for (DiscoveryNode extensionNode : extensionIdMap.values()) {
-            onIndexModule(indexModule, extensionNode);
-        }
-    }
-
-    private void onIndexModule(IndexModule indexModule, DiscoveryNode extensionNode) throws UnknownHostException {
-        logger.info("onIndexModule index:" + indexModule.getIndex());
-        final CompletableFuture<IndicesModuleResponse> inProgressFuture = new CompletableFuture<>();
-        final CompletableFuture<AcknowledgedResponse> inProgressIndexNameFuture = new CompletableFuture<>();
-        final TransportResponseHandler<AcknowledgedResponse> acknowledgedResponseHandler = new TransportResponseHandler<
-            AcknowledgedResponse>() {
-            @Override
-            public void handleResponse(AcknowledgedResponse response) {
-                logger.info("ACK Response" + response);
-                inProgressIndexNameFuture.complete(response);
-            }
-
-            @Override
-            public void handleException(TransportException exp) {
-                inProgressIndexNameFuture.completeExceptionally(exp);
-            }
-
-            @Override
-            public String executor() {
-                return ThreadPool.Names.GENERIC;
-            }
-
-            @Override
-            public AcknowledgedResponse read(StreamInput in) throws IOException {
-                return new AcknowledgedResponse(in);
-            }
-
-        };
-
-        final TransportResponseHandler<IndicesModuleResponse> indicesModuleResponseHandler = new TransportResponseHandler<
-            IndicesModuleResponse>() {
-
-            @Override
-            public IndicesModuleResponse read(StreamInput in) throws IOException {
-                return new IndicesModuleResponse(in);
-            }
-
-            @Override
-            public void handleResponse(IndicesModuleResponse response) {
-                logger.info("received {}", response);
-                if (response.getIndexEventListener() == true) {
-                    indexModule.addIndexEventListener(new IndexEventListener() {
-                        @Override
-                        public void beforeIndexRemoved(
-                            IndexService indexService,
-                            IndicesClusterStateService.AllocatedIndices.IndexRemovalReason reason
-                        ) {
-                            logger.info("Index Event Listener is called");
-                            String indexName = indexService.index().getName();
-                            logger.info("Index Name" + indexName.toString());
-                            try {
-                                logger.info("Sending extension request type: " + INDICES_EXTENSION_NAME_ACTION_NAME);
-                                transportService.sendRequest(
-                                    extensionNode,
-                                    INDICES_EXTENSION_NAME_ACTION_NAME,
-                                    new IndicesModuleRequest(indexModule),
-                                    acknowledgedResponseHandler
-                                );
-                                inProgressIndexNameFuture.orTimeout(EXTENSION_REQUEST_WAIT_TIMEOUT, TimeUnit.SECONDS).join();
-                            } catch (CompletionException e) {
-                                if (e.getCause() instanceof TimeoutException) {
-                                    logger.info("No response from extension to request.");
-                                }
-                                if (e.getCause() instanceof RuntimeException) {
-                                    throw (RuntimeException) e.getCause();
-                                } else if (e.getCause() instanceof Error) {
-                                    throw (Error) e.getCause();
-                                } else {
-                                    throw new RuntimeException(e.getCause());
-                                }
-                            }
-                        }
-                    });
-                }
-                inProgressFuture.complete(response);
-            }
-
-            @Override
-            public void handleException(TransportException exp) {
-                logger.error(new ParameterizedMessage("IndicesModuleRequest failed"), exp);
-                inProgressFuture.completeExceptionally(exp);
-            }
-
-            @Override
-            public String executor() {
-                return ThreadPool.Names.GENERIC;
-            }
-        };
-
-        try {
-            logger.info("Sending extension request type: " + INDICES_EXTENSION_POINT_ACTION_NAME);
-            transportService.sendRequest(
-                extensionNode,
-                INDICES_EXTENSION_POINT_ACTION_NAME,
-                new IndicesModuleRequest(indexModule),
-                indicesModuleResponseHandler
-            );
-            inProgressFuture.orTimeout(EXTENSION_REQUEST_WAIT_TIMEOUT, TimeUnit.SECONDS).join();
-            logger.info("Received response from Extension");
-        } catch (CompletionException e) {
-            if (e.getCause() instanceof TimeoutException) {
-                logger.info("No response from extension to request.");
-            }
-            if (e.getCause() instanceof RuntimeException) {
-                throw (RuntimeException) e.getCause();
-            } else if (e.getCause() instanceof Error) {
-                throw (Error) e.getCause();
-            } else {
-                throw new RuntimeException(e.getCause());
-            }
-        }
-    }
-
     private ExtensionsSettings readFromExtensionsYml(Path filePath) throws IOException {
         Yaml yaml = new Yaml();
         try (InputStream inputStream = Files.newInputStream(filePath)) {
@@ -655,14 +526,6 @@ static String getRequestExtensionActionName() {
         return REQUEST_EXTENSION_ACTION_NAME;
     }
 
-    static String getIndicesExtensionPointActionName() {
-        return INDICES_EXTENSION_POINT_ACTION_NAME;
-    }
-
-    static String getIndicesExtensionNameActionName() {
-        return INDICES_EXTENSION_NAME_ACTION_NAME;
-    }
-
     static String getRequestExtensionClusterState() {
         return REQUEST_EXTENSION_CLUSTER_STATE;
     }

server/src/main/java/org/opensearch/extensions/NoopExtensionsManager.java

@@ -9,7 +9,6 @@
 package org.opensearch.extensions;
 
 import java.io.IOException;
-import java.net.UnknownHostException;
 import java.nio.file.Path;
 import java.util.Optional;
 
@@ -22,7 +21,6 @@
 import org.opensearch.extensions.action.ExtensionActionRequest;
 import org.opensearch.extensions.action.ExtensionActionResponse;
 import org.opensearch.extensions.action.RemoteExtensionActionResponse;
-import org.opensearch.index.IndexModule;
 import org.opensearch.transport.TransportService;
 
 /**
@@ -70,11 +68,6 @@ public void initialize() {
         // no-op
     }
 
-    @Override
-    public void onIndexModule(IndexModule indexModule) throws UnknownHostException {
-        // no-op
-    }
-
     @Override
     public Optional<DiscoveryExtensionNode> lookupInitializedExtensionById(final String extensionId) {
         // no-op not found

server/src/main/java/org/opensearch/indices/IndicesService.java

@@ -148,7 +148,6 @@
 import org.opensearch.indices.replication.common.ReplicationType;
 import org.opensearch.node.Node;
 import org.opensearch.plugins.IndexStorePlugin;
-import org.opensearch.extensions.ExtensionsManager;
 import org.opensearch.plugins.PluginsService;
 import org.opensearch.repositories.RepositoriesService;
 import org.opensearch.script.ScriptService;
@@ -289,7 +288,6 @@ public class IndicesService extends AbstractLifecycleComponent
      */
     private final Settings settings;
     private final PluginsService pluginsService;
-    private final ExtensionsManager extensionsManager;
     private final NodeEnvironment nodeEnv;
     private final NamedXContentRegistry xContentRegistry;
     private final TimeValue shardsClosedTimeout;
@@ -342,7 +340,6 @@ protected void doStart() {
     public IndicesService(
         Settings settings,
         PluginsService pluginsService,
-        ExtensionsManager extensionsManager,
         NodeEnvironment nodeEnv,
         NamedXContentRegistry xContentRegistry,
         AnalysisRegistry analysisRegistry,
@@ -368,7 +365,6 @@ public IndicesService(
         this.settings = settings;
         this.threadPool = threadPool;
         this.pluginsService = pluginsService;
-        this.extensionsManager = extensionsManager;
         this.nodeEnv = nodeEnv;
         this.xContentRegistry = xContentRegistry;
         this.valuesSourceRegistry = valuesSourceRegistry;
@@ -810,7 +806,6 @@ private synchronized IndexService createIndexService(
             indexModule.addIndexOperationListener(operationListener);
         }
         pluginsService.onIndexModule(indexModule);
-        extensionsManager.onIndexModule(indexModule);
         for (IndexEventListener listener : builtInListeners) {
             indexModule.addIndexEventListener(listener);
         }

server/src/main/java/org/opensearch/node/Node.java

@@ -707,7 +707,6 @@ protected Node(
             final IndicesService indicesService = new IndicesService(
                 settings,
                 pluginsService,
-                extensionsManager,
                 nodeEnvironment,
                 xContentRegistry,
                 analysisModule.getAnalysisRegistry(),

server/src/test/java/org/opensearch/extensions/ExtensionsManagerTests.java

@@ -48,7 +48,6 @@
 import org.opensearch.common.util.FeatureFlags;
 import org.opensearch.env.EnvironmentSettingsResponse;
 import org.opensearch.cluster.metadata.IndexMetadata;
-import org.opensearch.cluster.metadata.IndexNameExpressionResolver;
 import org.opensearch.cluster.node.DiscoveryNode;
 import org.opensearch.cluster.service.ClusterService;
 import org.opensearch.common.bytes.BytesReference;
@@ -65,29 +64,20 @@
 import org.opensearch.common.settings.SettingsModule;
 import org.opensearch.common.transport.TransportAddress;
 import org.opensearch.common.util.PageCacheRecycler;
-import org.opensearch.common.util.concurrent.ThreadContext;
 import org.opensearch.env.Environment;
-import org.opensearch.env.TestEnvironment;
 import org.opensearch.extensions.proto.ExtensionRequestProto;
 import org.opensearch.extensions.rest.RegisterRestActionsRequest;
 import org.opensearch.extensions.settings.RegisterCustomSettingsRequest;
 import org.opensearch.identity.IdentityService;
-import org.opensearch.index.IndexModule;
-import org.opensearch.index.IndexSettings;
-import org.opensearch.index.analysis.AnalysisRegistry;
-import org.opensearch.index.engine.EngineConfigFactory;
-import org.opensearch.index.engine.InternalEngineFactory;
 import org.opensearch.indices.breaker.NoneCircuitBreakerService;
 import org.opensearch.rest.RestController;
 import org.opensearch.test.FeatureFlagSetter;
-import org.opensearch.test.IndexSettingsModule;
 import org.opensearch.test.MockLogAppender;
 import org.opensearch.test.OpenSearchTestCase;
 import org.opensearch.test.client.NoOpNodeClient;
 import org.opensearch.test.transport.MockTransportService;
 import org.opensearch.threadpool.TestThreadPool;
 import org.opensearch.threadpool.ThreadPool;
-import org.opensearch.transport.NodeNotConnectedException;
 import org.opensearch.transport.Transport;
 import org.opensearch.transport.TransportResponse;
 import org.opensearch.transport.TransportService;
@@ -838,40 +828,6 @@ public void testRegisterHandler() throws Exception {
 
     }
 
-    public void testOnIndexModule() throws Exception {
-        Files.write(extensionDir.resolve("extensions.yml"), extensionsYmlLines, StandardCharsets.UTF_8);
-        ExtensionsManager extensionsManager = new ExtensionsManager(extensionDir);
-        initialize(extensionsManager);
-
-        Environment environment = TestEnvironment.newEnvironment(settings);
-        AnalysisRegistry emptyAnalysisRegistry = new AnalysisRegistry(
-            environment,
-            emptyMap(),
-            emptyMap(),
-            emptyMap(),
-            emptyMap(),
-            emptyMap(),
-            emptyMap(),
-            emptyMap(),
-            emptyMap(),
-            emptyMap()
-        );
-
-        IndexSettings indexSettings = IndexSettingsModule.newIndexSettings("test_index", settings);
-        IndexModule indexModule = new IndexModule(
-            indexSettings,
-            emptyAnalysisRegistry,
-            new InternalEngineFactory(),
-            new EngineConfigFactory(indexSettings),
-            Collections.emptyMap(),
-            () -> true,
-            new IndexNameExpressionResolver(new ThreadContext(Settings.EMPTY)),
-            Collections.emptyMap()
-        );
-        expectThrows(NodeNotConnectedException.class, () -> extensionsManager.onIndexModule(indexModule));
-
-    }
-
     public void testIncompatibleExtensionRegistration() throws IOException, IllegalAccessException {
 
         try (MockLogAppender mockLogAppender = MockLogAppender.createForLoggers(LogManager.getLogger(ExtensionsManager.class))) {

server/src/test/java/org/opensearch/snapshots/SnapshotResiliencyTests.java

@@ -195,7 +195,6 @@
 import org.opensearch.ingest.IngestService;
 import org.opensearch.monitor.StatusInfo;
 import org.opensearch.node.ResponseCollectorService;
-import org.opensearch.extensions.ExtensionsManager;
 import org.opensearch.plugins.PluginsService;
 import org.opensearch.repositories.RepositoriesService;
 import org.opensearch.repositories.Repository;
@@ -1807,7 +1806,6 @@ public void onFailure(final Exception e) {
                 indicesService = new IndicesService(
                     settings,
                     mock(PluginsService.class),
-                    mock(ExtensionsManager.class),
                     nodeEnv,
                     namedXContentRegistry,
                     new AnalysisRegistry(