Expose validate-on-borrow

Expose the option to validate the connection on borrow as supported by Agroal.

Fix #41616

extensions/agroal/runtime/src/main/java/io/quarkus/agroal/runtime/DataSourceJdbcRuntimeConfig.java

@@ -115,6 +115,15 @@ public interface DataSourceJdbcRuntimeConfig {
      */
     Optional<String> validationQuerySql();
 
+    /**
+     * Forces connection validation prior to acquisition (foreground validation) regardless of the idle status.
+     * <p>
+     * Because of the overhead of performing validation on every call, it’s recommended to rely on default idle validation
+     * instead, and to leave this to `false`.
+     */
+    @WithDefault("false")
+    boolean validateOnBorrow();
+
     /**
      * Disable pooling to prevent reuse of Connections. Use this when an external pool manages the life-cycle
      * of Connections.

extensions/agroal/runtime/src/main/java/io/quarkus/agroal/runtime/DataSources.java

@@ -410,6 +410,7 @@ public boolean isValid(Connection connection) {
                 }
             });
         }
+        poolConfiguration.validateOnBorrow(dataSourceJdbcRuntimeConfig.validateOnBorrow());
         poolConfiguration.reapTimeout(dataSourceJdbcRuntimeConfig.idleRemovalInterval());
         if (dataSourceJdbcRuntimeConfig.leakDetectionInterval().isPresent()) {
             poolConfiguration.leakTimeout(dataSourceJdbcRuntimeConfig.leakDetectionInterval().get());