Refactor async executor service dependencies using guice framework (#…

…2488)

Signed-off-by: Vamsi Manohar <[email protected]>

legacy/src/main/java/org/opensearch/sql/legacy/plugin/RestSqlStatsAction.java

@@ -11,11 +11,14 @@
 import java.util.Arrays;
 import java.util.HashSet;
 import java.util.List;
+import java.util.Map;
 import java.util.Set;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
+import org.apache.logging.log4j.ThreadContext;
 import org.opensearch.client.node.NodeClient;
 import org.opensearch.common.settings.Settings;
+import org.opensearch.common.unit.TimeValue;
 import org.opensearch.core.rest.RestStatus;
 import org.opensearch.rest.BaseRestHandler;
 import org.opensearch.rest.BytesRestResponse;
@@ -24,6 +27,7 @@
 import org.opensearch.sql.common.utils.QueryContext;
 import org.opensearch.sql.legacy.executor.format.ErrorMessageFactory;
 import org.opensearch.sql.legacy.metrics.Metrics;
+import org.opensearch.threadpool.ThreadPool;
 
 /**
  * Currently this interface is for node level. Cluster level is coming up soon.
@@ -69,8 +73,11 @@ protected RestChannelConsumer prepareRequest(RestRequest request, NodeClient cli
 
     try {
       return channel ->
-          channel.sendResponse(
-              new BytesRestResponse(RestStatus.OK, Metrics.getInstance().collectToJSON()));
+          schedule(
+              client,
+              () ->
+                  channel.sendResponse(
+                      new BytesRestResponse(RestStatus.OK, Metrics.getInstance().collectToJSON())));
     } catch (Exception e) {
       LOG.error("Failed during Query SQL STATS Action.", e);
 
@@ -91,4 +98,17 @@ protected Set<String> responseParams() {
             "sql", "flat", "separator", "_score", "_type", "_id", "newLine", "format", "sanitize"));
     return responseParams;
   }
+
+  private void schedule(NodeClient client, Runnable task) {
+    ThreadPool threadPool = client.threadPool();
+    threadPool.schedule(withCurrentContext(task), new TimeValue(0), "sql-worker");
+  }
+
+  private Runnable withCurrentContext(final Runnable task) {
+    final Map<String, String> currentContext = ThreadContext.getImmutableContext();
+    return () -> {
+      ThreadContext.putAll(currentContext);
+      task.run();
+    };
+  }
 }

plugin/src/main/java/org/opensearch/sql/plugin/SQLPlugin.java

@@ -5,21 +5,14 @@
 
 package org.opensearch.sql.plugin;
 
-import static org.opensearch.sql.common.setting.Settings.Key.SPARK_EXECUTION_ENGINE_CONFIG;
+import static java.util.Collections.singletonList;
 import static org.opensearch.sql.datasource.model.DataSourceMetadata.defaultOpenSearchDataSourceMetadata;
-import static org.opensearch.sql.spark.execution.statestore.StateStore.ALL_DATASOURCE;
 
-import com.amazonaws.auth.DefaultAWSCredentialsProviderChain;
-import com.amazonaws.services.emrserverless.AWSEMRServerless;
-import com.amazonaws.services.emrserverless.AWSEMRServerlessClientBuilder;
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableSet;
-import java.security.AccessController;
-import java.security.PrivilegedAction;
 import java.time.Clock;
 import java.util.Arrays;
 import java.util.Collection;
-import java.util.Collections;
 import java.util.List;
 import java.util.Objects;
 import java.util.function.Supplier;
@@ -68,7 +61,6 @@
 import org.opensearch.sql.datasources.transport.*;
 import org.opensearch.sql.legacy.esdomain.LocalClusterState;
 import org.opensearch.sql.legacy.executor.AsyncRestExecutor;
-import org.opensearch.sql.legacy.metrics.GaugeMetric;
 import org.opensearch.sql.legacy.metrics.Metrics;
 import org.opensearch.sql.legacy.plugin.RestSqlAction;
 import org.opensearch.sql.legacy.plugin.RestSqlStatsAction;
@@ -87,26 +79,13 @@
 import org.opensearch.sql.plugin.transport.TransportPPLQueryResponse;
 import org.opensearch.sql.prometheus.storage.PrometheusStorageFactory;
 import org.opensearch.sql.spark.asyncquery.AsyncQueryExecutorService;
-import org.opensearch.sql.spark.asyncquery.AsyncQueryExecutorServiceImpl;
-import org.opensearch.sql.spark.asyncquery.AsyncQueryJobMetadataStorageService;
-import org.opensearch.sql.spark.asyncquery.OpensearchAsyncQueryJobMetadataStorageService;
-import org.opensearch.sql.spark.client.EMRServerlessClient;
-import org.opensearch.sql.spark.client.EmrServerlessClientImpl;
 import org.opensearch.sql.spark.cluster.ClusterManagerEventListener;
-import org.opensearch.sql.spark.config.SparkExecutionEngineConfig;
-import org.opensearch.sql.spark.config.SparkExecutionEngineConfigSupplier;
-import org.opensearch.sql.spark.config.SparkExecutionEngineConfigSupplierImpl;
-import org.opensearch.sql.spark.dispatcher.SparkQueryDispatcher;
-import org.opensearch.sql.spark.execution.session.SessionManager;
-import org.opensearch.sql.spark.execution.statestore.StateStore;
-import org.opensearch.sql.spark.flint.FlintIndexMetadataReaderImpl;
-import org.opensearch.sql.spark.leasemanager.DefaultLeaseManager;
-import org.opensearch.sql.spark.response.JobExecutionResponseReader;
 import org.opensearch.sql.spark.rest.RestAsyncQueryManagementAction;
 import org.opensearch.sql.spark.storage.SparkStorageFactory;
 import org.opensearch.sql.spark.transport.TransportCancelAsyncQueryRequestAction;
 import org.opensearch.sql.spark.transport.TransportCreateAsyncQueryRequestAction;
 import org.opensearch.sql.spark.transport.TransportGetAsyncQueryResultAction;
+import org.opensearch.sql.spark.transport.config.AsyncExecutorServiceModule;
 import org.opensearch.sql.spark.transport.model.CancelAsyncQueryActionResponse;
 import org.opensearch.sql.spark.transport.model.CreateAsyncQueryActionResponse;
 import org.opensearch.sql.spark.transport.model.GetAsyncQueryResultActionResponse;
@@ -127,7 +106,6 @@ public class SQLPlugin extends Plugin implements ActionPlugin, ScriptPlugin {
 
   private NodeClient client;
   private DataSourceServiceImpl dataSourceService;
-  private AsyncQueryExecutorService asyncQueryExecutorService;
   private Injector injector;
 
   public String name() {
@@ -223,32 +201,16 @@ public Collection<Object> createComponents(
     dataSourceService.createDataSource(defaultOpenSearchDataSourceMetadata());
     LocalClusterState.state().setClusterService(clusterService);
     LocalClusterState.state().setPluginSettings((OpenSearchSettings) pluginSettings);
-    SparkExecutionEngineConfigSupplier sparkExecutionEngineConfigSupplier =
-        new SparkExecutionEngineConfigSupplierImpl(pluginSettings);
-    SparkExecutionEngineConfig sparkExecutionEngineConfig =
-        sparkExecutionEngineConfigSupplier.getSparkExecutionEngineConfig();
-    if (StringUtils.isEmpty(sparkExecutionEngineConfig.getRegion())) {
-      LOGGER.warn(
-          String.format(
-              "Async Query APIs are disabled as %s is not configured properly in cluster settings. "
-                  + "Please configure and restart the domain to enable Async Query APIs",
-              SPARK_EXECUTION_ENGINE_CONFIG.getKeyValue()));
-      this.asyncQueryExecutorService = new AsyncQueryExecutorServiceImpl();
-    } else {
-      this.asyncQueryExecutorService =
-          createAsyncQueryExecutorService(
-              sparkExecutionEngineConfigSupplier, sparkExecutionEngineConfig);
-    }
-
     ModulesBuilder modules = new ModulesBuilder();
     modules.add(new OpenSearchPluginModule());
     modules.add(
         b -> {
           b.bind(NodeClient.class).toInstance((NodeClient) client);
           b.bind(org.opensearch.sql.common.setting.Settings.class).toInstance(pluginSettings);
           b.bind(DataSourceService.class).toInstance(dataSourceService);
+          b.bind(ClusterService.class).toInstance(clusterService);
         });
-
+    modules.add(new AsyncExecutorServiceModule());
     injector = modules.createInjector();
     ClusterManagerEventListener clusterManagerEventListener =
         new ClusterManagerEventListener(
@@ -261,12 +223,15 @@ public Collection<Object> createComponents(
             OpenSearchSettings.AUTO_INDEX_MANAGEMENT_ENABLED_SETTING,
             environment.settings());
     return ImmutableList.of(
-        dataSourceService, asyncQueryExecutorService, clusterManagerEventListener, pluginSettings);
+        dataSourceService,
+        injector.getInstance(AsyncQueryExecutorService.class),
+        clusterManagerEventListener,
+        pluginSettings);
   }
 
   @Override
   public List<ExecutorBuilder<?>> getExecutorBuilders(Settings settings) {
-    return Collections.singletonList(
+    return singletonList(
         new FixedExecutorBuilder(
             settings,
             AsyncRestExecutor.SQL_WORKER_THREAD_POOL_NAME,
@@ -318,57 +283,4 @@ private DataSourceServiceImpl createDataSourceService() {
         dataSourceMetadataStorage,
         dataSourceUserAuthorizationHelper);
   }
-
-  private AsyncQueryExecutorService createAsyncQueryExecutorService(
-      SparkExecutionEngineConfigSupplier sparkExecutionEngineConfigSupplier,
-      SparkExecutionEngineConfig sparkExecutionEngineConfig) {
-    StateStore stateStore = new StateStore(client, clusterService);
-    registerStateStoreMetrics(stateStore);
-    AsyncQueryJobMetadataStorageService asyncQueryJobMetadataStorageService =
-        new OpensearchAsyncQueryJobMetadataStorageService(stateStore);
-    EMRServerlessClient emrServerlessClient =
-        createEMRServerlessClient(sparkExecutionEngineConfig.getRegion());
-    JobExecutionResponseReader jobExecutionResponseReader = new JobExecutionResponseReader(client);
-    SparkQueryDispatcher sparkQueryDispatcher =
-        new SparkQueryDispatcher(
-            emrServerlessClient,
-            this.dataSourceService,
-            new DataSourceUserAuthorizationHelperImpl(client),
-            jobExecutionResponseReader,
-            new FlintIndexMetadataReaderImpl(client),
-            client,
-            new SessionManager(stateStore, emrServerlessClient, pluginSettings),
-            new DefaultLeaseManager(pluginSettings, stateStore),
-            stateStore);
-    return new AsyncQueryExecutorServiceImpl(
-        asyncQueryJobMetadataStorageService,
-        sparkQueryDispatcher,
-        sparkExecutionEngineConfigSupplier);
-  }
-
-  private void registerStateStoreMetrics(StateStore stateStore) {
-    GaugeMetric<Long> activeSessionMetric =
-        new GaugeMetric<>(
-            "active_async_query_sessions_count",
-            StateStore.activeSessionsCount(stateStore, ALL_DATASOURCE));
-    GaugeMetric<Long> activeStatementMetric =
-        new GaugeMetric<>(
-            "active_async_query_statements_count",
-            StateStore.activeStatementsCount(stateStore, ALL_DATASOURCE));
-    Metrics.getInstance().registerMetric(activeSessionMetric);
-    Metrics.getInstance().registerMetric(activeStatementMetric);
-  }
-
-  private EMRServerlessClient createEMRServerlessClient(String region) {
-    return AccessController.doPrivileged(
-        (PrivilegedAction<EMRServerlessClient>)
-            () -> {
-              AWSEMRServerless awsemrServerless =
-                  AWSEMRServerlessClientBuilder.standard()
-                      .withRegion(region)
-                      .withCredentials(new DefaultAWSCredentialsProviderChain())
-                      .build();
-              return new EmrServerlessClientImpl(awsemrServerless);
-            });
-  }
 }

plugin/src/main/java/org/opensearch/sql/plugin/rest/RestPPLStatsAction.java

@@ -22,6 +22,7 @@
 import org.opensearch.rest.RestController;
 import org.opensearch.rest.RestRequest;
 import org.opensearch.sql.common.utils.QueryContext;
+import org.opensearch.sql.datasources.utils.Scheduler;
 import org.opensearch.sql.legacy.executor.format.ErrorMessageFactory;
 import org.opensearch.sql.legacy.metrics.Metrics;
 
@@ -67,8 +68,11 @@ protected RestChannelConsumer prepareRequest(RestRequest request, NodeClient cli
 
     try {
       return channel ->
-          channel.sendResponse(
-              new BytesRestResponse(RestStatus.OK, Metrics.getInstance().collectToJSON()));
+          Scheduler.schedule(
+              client,
+              () ->
+                  channel.sendResponse(
+                      new BytesRestResponse(RestStatus.OK, Metrics.getInstance().collectToJSON())));
     } catch (Exception e) {
       LOG.error("Failed during Query PPL STATS Action.", e);
 

spark/src/main/java/org/opensearch/sql/spark/asyncquery/AsyncQueryExecutorServiceImpl.java

@@ -5,7 +5,6 @@
 
 package org.opensearch.sql.spark.asyncquery;
 
-import static org.opensearch.sql.common.setting.Settings.Key.SPARK_EXECUTION_ENGINE_CONFIG;
 import static org.opensearch.sql.spark.data.constants.SparkConstants.ERROR_FIELD;
 import static org.opensearch.sql.spark.data.constants.SparkConstants.STATUS_FIELD;
 
@@ -34,26 +33,10 @@ public class AsyncQueryExecutorServiceImpl implements AsyncQueryExecutorService
   private AsyncQueryJobMetadataStorageService asyncQueryJobMetadataStorageService;
   private SparkQueryDispatcher sparkQueryDispatcher;
   private SparkExecutionEngineConfigSupplier sparkExecutionEngineConfigSupplier;
-  private Boolean isSparkJobExecutionEnabled;
-
-  public AsyncQueryExecutorServiceImpl() {
-    this.isSparkJobExecutionEnabled = Boolean.FALSE;
-  }
-
-  public AsyncQueryExecutorServiceImpl(
-      AsyncQueryJobMetadataStorageService asyncQueryJobMetadataStorageService,
-      SparkQueryDispatcher sparkQueryDispatcher,
-      SparkExecutionEngineConfigSupplier sparkExecutionEngineConfigSupplier) {
-    this.isSparkJobExecutionEnabled = Boolean.TRUE;
-    this.asyncQueryJobMetadataStorageService = asyncQueryJobMetadataStorageService;
-    this.sparkQueryDispatcher = sparkQueryDispatcher;
-    this.sparkExecutionEngineConfigSupplier = sparkExecutionEngineConfigSupplier;
-  }
 
   @Override
   public CreateAsyncQueryResponse createAsyncQuery(
       CreateAsyncQueryRequest createAsyncQueryRequest) {
-    validateSparkExecutionEngineSettings();
     SparkExecutionEngineConfig sparkExecutionEngineConfig =
         sparkExecutionEngineConfigSupplier.getSparkExecutionEngineConfig();
     DispatchQueryResponse dispatchQueryResponse =
@@ -80,7 +63,6 @@ public CreateAsyncQueryResponse createAsyncQuery(
 
   @Override
   public AsyncQueryExecutionResponse getAsyncQueryResults(String queryId) {
-    validateSparkExecutionEngineSettings();
     Optional<AsyncQueryJobMetadata> jobMetadata =
         asyncQueryJobMetadataStorageService.getJobMetadata(queryId);
     if (jobMetadata.isPresent()) {
@@ -120,14 +102,4 @@ public String cancelQuery(String queryId) {
     }
     throw new AsyncQueryNotFoundException(String.format("QueryId: %s not found", queryId));
   }
-
-  private void validateSparkExecutionEngineSettings() {
-    if (!isSparkJobExecutionEnabled) {
-      throw new IllegalArgumentException(
-          String.format(
-              "Async Query APIs are disabled as %s is not configured in cluster settings. Please"
-                  + " configure the setting and restart the domain to enable Async Query APIs",
-              SPARK_EXECUTION_ENGINE_CONFIG.getKeyValue()));
-    }
-  }
 }

spark/src/main/java/org/opensearch/sql/spark/client/EMRServerlessClientFactory.java

@@ -0,0 +1,17 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package org.opensearch.sql.spark.client;
+
+/** Factory interface for creating instances of {@link EMRServerlessClient}. */
+public interface EMRServerlessClientFactory {
+
+  /**
+   * Gets an instance of {@link EMRServerlessClient}.
+   *
+   * @return An {@link EMRServerlessClient} instance.
+   */
+  EMRServerlessClient getClient();
+}