content: /*
   * Copyright 2021-2024 Aklivity Inc.
   *
   * Aklivity licenses this file to you under the Apache License,
   * version 2.0 (the "License"); you may not use this file except in compliance
   * with the License. You may obtain a copy of the License at:
   *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
   * License for the specific language governing permissions and limitations
   * under the License.
   */
  package io.aklivity.zilla.runtime.engine.guard;
  
  import java.net.URL;
  import java.util.function.LongFunction;
  import java.util.function.LongToIntFunction;
  import java.util.function.UnaryOperator;
  
  import io.aklivity.zilla.runtime.engine.EngineContext;
  import io.aklivity.zilla.runtime.engine.config.GuardedConfig;
  import io.aklivity.zilla.runtime.engine.util.function.LongObjectBiFunction;
  import io.aklivity.zilla.runtime.engine.util.function.LongObjectPredicate;
  
  public interface Guard
  {
      String name();
  
      GuardContext supply(
          EngineContext context);
  
      /*
       * Returns a verifier for the specified guarded configuration.
       *
       * @param indexOf  maps session id to engine index
       * @param config   the guarded configuration
       *
       * @return  the session verifier predicate
       */
      LongObjectPredicate<UnaryOperator<String>> verifier(
          LongToIntFunction indexOf,
          GuardedConfig config);
  
      /*
       * Returns an identifier for the specified guarded configuration.
       *
       * @param indexOf  maps session id to engine index
       * @param config   the guarded configuration
       *
       * @return  the session identity function
       */
      LongFunction<String> identifier(
          LongToIntFunction indexOf,
          GuardedConfig config);
  
      LongObjectBiFunction<String, String> attributor(
          LongToIntFunction indexOf,
          GuardedConfig config);
  
      URL type();
  }
  