Remove "Optional[]" from getResourceGroupQueryType string

TrinoQueryProperties.getResourceGroupQueryType() called toString on an Optional. This
unintended behavior produced output such as "Optional[DATA_DEFINITION]", complicating
rule writing for end users.

Co-authored-by: Yuya Ebihara <[email protected]>

Author: willmostly

gateway-ha/src/main/java/io/trino/gateway/ha/router/StatementUtils.java

@@ -14,6 +14,7 @@
 package io.trino.gateway.ha.router;
 
 import com.google.common.collect.ImmutableList;
+import io.airlift.log.Logger;
 import io.trino.sql.tree.AddColumn;
 import io.trino.sql.tree.Analyze;
 import io.trino.sql.tree.Call;
@@ -89,7 +90,6 @@
 import io.trino.sql.tree.Use;
 
 import java.util.Map;
-import java.util.Optional;
 
 import static com.google.common.collect.ImmutableMap.toImmutableMap;
 import static io.trino.gateway.ha.router.QueryType.ALTER_TABLE_EXECUTE;
@@ -108,6 +108,8 @@
 //modified version of io.trino.util.StatementUtils
 public final class StatementUtils
 {
+    private static final Logger log = Logger.get(StatementUtils.class);
+
     private StatementUtils() {}
 
     private static final Map<Class<? extends Statement>, StatementTypeInfo<? extends Statement>> STATEMENT_QUERY_TYPES = ImmutableList.<StatementTypeInfo<?>>builder()
@@ -191,13 +193,17 @@ private StatementUtils() {}
             .build().stream()
             .collect(toImmutableMap(StatementTypeInfo::getStatementType, identity()));
 
-    public static Optional<QueryType> getQueryType(Statement statement)
+    public static String getResourceGroupQueryType(Statement statement)
     {
         if (statement instanceof ExplainAnalyze) {
-            return getQueryType(((ExplainAnalyze) statement).getStatement());
+            return getResourceGroupQueryType(((ExplainAnalyze) statement).getStatement());
+        }
+        StatementTypeInfo<? extends Statement> statementTypeInfo = STATEMENT_QUERY_TYPES.get(statement.getClass());
+        if (statementTypeInfo != null) {
+            return statementTypeInfo.getQueryType().toString();
         }
-        return Optional.ofNullable(STATEMENT_QUERY_TYPES.get(statement.getClass()))
-                .map(StatementTypeInfo::getQueryType);
+        log.warn("Unsupported statement type: %s", statement.getClass());
+        return "UNKNOWN";
     }
 
     private static <T extends Statement> StatementTypeInfo<T> basicStatement(Class<T> statementType, QueryType queryType)

gateway-ha/src/main/java/io/trino/gateway/ha/router/TrinoQueryProperties.java

@@ -206,7 +206,7 @@ else if (statement instanceof ExecuteImmediate executeImmediate) {
             }
 
             queryType = statement.getClass().getSimpleName();
-            resourceGroupQueryType = StatementUtils.getQueryType(statement).toString();
+            resourceGroupQueryType = StatementUtils.getResourceGroupQueryType(statement);
             ImmutableSet.Builder<QualifiedName> tableBuilder = ImmutableSet.builder();
             ImmutableSet.Builder<String> catalogBuilder = ImmutableSet.builder();
             ImmutableSet.Builder<String> schemaBuilder = ImmutableSet.builder();

gateway-ha/src/test/java/io/trino/gateway/ha/router/TestRoutingGroupSelector.java

@@ -178,6 +178,18 @@ void testTrinoQueryPropertiesQueryType()
         assertThat(routingGroupSelector.findRoutingGroup(mockRequest)).isEqualTo("type-group");
     }
 
+    @Test
+    void testTrinoQueryPropertiesResourceGroupQueryType()
+            throws IOException
+    {
+        RoutingGroupSelector routingGroupSelector =
+                RoutingGroupSelector.byRoutingRulesEngine("src/test/resources/rules/routing_rules_trino_query_properties.yml", requestAnalyzerConfig);
+        HttpServletRequest mockRequest = prepareMockRequest();
+        when(mockRequest.getReader()).thenReturn(new BufferedReader(new StringReader("CREATE TABLE cat.schem.foo (c1 int)")));
+
+        assertThat(routingGroupSelector.findRoutingGroup(mockRequest)).isEqualTo("resource-group-type-group");
+    }
+
     @Test
     void testTrinoQueryPropertiesAlternateStatementFormat()
             throws IOException

gateway-ha/src/test/resources/rules/routing_rules_trino_query_properties.yml

@@ -32,6 +32,13 @@ condition: |
 actions:
   - "result.put(\"routingGroup\", \"type-group\")"
 ---
+name: "resource-group-query-type"
+description: "test table type"
+condition: |
+  trinoQueryProperties.getResourceGroupQueryType().equals("DATA_DEFINITION")
+actions:
+  - "result.put(\"routingGroup\", \"resource-group-type-group\")"
+---
 name: "prepared-statement-header"
 description: "test execute with multiple prepared statements"
 condition: |