move pplenabled to transportaction

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

@@ -154,7 +154,7 @@ public List<RestHandler> getRestHandlers(
     Metrics.getInstance().registerDefaultMetrics();
 
     return Arrays.asList(
-        new RestPPLQueryAction(pluginSettings, settings),
+        new RestPPLQueryAction(),
         new RestSqlAction(settings, injector),
         new RestSqlStatsAction(settings, restController),
         new RestPPLStatsAction(settings, restController),

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

@@ -15,7 +15,6 @@
 import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
-import java.util.function.Supplier;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 import org.opensearch.OpenSearchSecurityException;
@@ -28,7 +27,6 @@
 import org.opensearch.rest.RestChannel;
 import org.opensearch.rest.RestRequest;
 import org.opensearch.sql.common.antlr.SyntaxCheckException;
-import org.opensearch.sql.common.setting.Settings;
 import org.opensearch.sql.datasources.exceptions.DataSourceClientException;
 import org.opensearch.sql.exception.ExpressionEvaluationException;
 import org.opensearch.sql.exception.QueryEngineException;
@@ -49,16 +47,9 @@ public class RestPPLQueryAction extends BaseRestHandler {
 
   private static final Logger LOG = LogManager.getLogger();
 
-  private final Supplier<Boolean> pplEnabled;
-
   /** Constructor of RestPPLQueryAction. */
-  public RestPPLQueryAction(
-      Settings pluginSettings, org.opensearch.common.settings.Settings clusterSettings) {
+  public RestPPLQueryAction() {
     super();
-    this.pplEnabled =
-        () ->
-            MULTI_ALLOW_EXPLICIT_INDEX.get(clusterSettings)
-                && (Boolean) pluginSettings.getSettingValue(Settings.Key.PPL_ENABLED);
   }
 
   private static boolean isClientError(Exception e) {
@@ -104,17 +95,6 @@ protected Set<String> responseParams() {
 
   @Override
   protected RestChannelConsumer prepareRequest(RestRequest request, NodeClient nodeClient) {
-    // TODO: need move to transport Action
-    if (!pplEnabled.get()) {
-      return channel ->
-          reportError(
-              channel,
-              new IllegalAccessException(
-                  "Either plugins.ppl.enabled or rest.action.multi.allow_explicit_index setting is"
-                      + " false"),
-              BAD_REQUEST);
-    }
-
     TransportPPLQueryRequest transportPPLQueryRequest =
         new TransportPPLQueryRequest(PPLQueryRequestFactory.getPPLRequest(request));
 

plugin/src/main/java/org/opensearch/sql/plugin/transport/TransportPPLQueryAction.java

@@ -5,10 +5,12 @@
 
 package org.opensearch.sql.plugin.transport;
 
+import static org.opensearch.rest.BaseRestHandler.MULTI_ALLOW_EXPLICIT_INDEX;
 import static org.opensearch.sql.protocol.response.format.JsonResponseFormatter.Style.PRETTY;
 
 import java.util.Locale;
 import java.util.Optional;
+import java.util.function.Supplier;
 import org.opensearch.action.ActionRequest;
 import org.opensearch.action.support.ActionFilters;
 import org.opensearch.action.support.HandledTransportAction;
@@ -19,6 +21,7 @@
 import org.opensearch.common.inject.ModulesBuilder;
 import org.opensearch.core.action.ActionListener;
 import org.opensearch.sql.common.response.ResponseListener;
+import org.opensearch.sql.common.setting.Settings;
 import org.opensearch.sql.common.utils.QueryContext;
 import org.opensearch.sql.datasource.DataSourceService;
 import org.opensearch.sql.datasources.service.DataSourceServiceImpl;
@@ -47,14 +50,17 @@ public class TransportPPLQueryAction
 
   private final Injector injector;
 
+  private final Supplier<Boolean> pplEnabled;
+
   /** Constructor of TransportPPLQueryAction. */
   @Inject
   public TransportPPLQueryAction(
       TransportService transportService,
       ActionFilters actionFilters,
       NodeClient client,
       ClusterService clusterService,
-      DataSourceServiceImpl dataSourceService) {
+      DataSourceServiceImpl dataSourceService,
+      org.opensearch.common.settings.Settings clusterSettings) {
     super(PPLQueryAction.NAME, transportService, actionFilters, TransportPPLQueryRequest::new);
 
     ModulesBuilder modules = new ModulesBuilder();
@@ -67,6 +73,13 @@ public TransportPPLQueryAction(
           b.bind(DataSourceService.class).toInstance(dataSourceService);
         });
     this.injector = modules.createInjector();
+    this.pplEnabled =
+        () ->
+            MULTI_ALLOW_EXPLICIT_INDEX.get(clusterSettings)
+                && (Boolean)
+                    injector
+                        .getInstance(org.opensearch.sql.common.setting.Settings.class)
+                        .getSettingValue(Settings.Key.PPL_ENABLED);
   }
 
   /**
@@ -76,6 +89,13 @@ public TransportPPLQueryAction(
   @Override
   protected void doExecute(
       Task task, ActionRequest request, ActionListener<TransportPPLQueryResponse> listener) {
+    if (!pplEnabled.get()) {
+      listener.onFailure(
+          new IllegalAccessException(
+              "Either plugins.ppl.enabled or rest.action.multi.allow_explicit_index setting is"
+                  + " false"));
+      return;
+    }
     Metrics.getInstance().getNumericalMetric(MetricName.PPL_REQ_TOTAL).increment();
     Metrics.getInstance().getNumericalMetric(MetricName.PPL_REQ_COUNT_TOTAL).increment();