/*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF 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 org.apache.omid.tso;
  
  import com.google.inject.AbstractModule;
  import com.google.inject.name.Names;
  import com.lmax.disruptor.BlockingWaitStrategy;
  import com.lmax.disruptor.BusySpinWaitStrategy;
  import com.lmax.disruptor.WaitStrategy;
  import com.lmax.disruptor.YieldingWaitStrategy;
  
  import javax.inject.Singleton;
  
  public class DisruptorModule extends AbstractModule {
  
      private final TSOServerConfig config;
  
      public DisruptorModule(TSOServerConfig config) {
          this.config = config;
      }
  
      @Override
      protected void configure() {
          switch (config.getWaitStrategyEnum()) {
          // A low-cpu usage Disruptor configuration for using in local/test environments
          case LOW_CPU:
               bind(WaitStrategy.class).annotatedWith(Names.named("PersistenceStrategy")).to(BlockingWaitStrategy.class);
               bind(WaitStrategy.class).annotatedWith(Names.named("ReplyStrategy")).to(BlockingWaitStrategy.class);
               bind(WaitStrategy.class).annotatedWith(Names.named("RetryStrategy")).to(BlockingWaitStrategy.class);
               break;
          // The default high-cpu usage Disruptor configuration for getting high throughput on production environments
          case HIGH_THROUGHPUT:
          default:
               bind(WaitStrategy.class).annotatedWith(Names.named("PersistenceStrategy")).to(BusySpinWaitStrategy.class);
               bind(WaitStrategy.class).annotatedWith(Names.named("ReplyStrategy")).to(BusySpinWaitStrategy.class);
               bind(WaitStrategy.class).annotatedWith(Names.named("RetryStrategy")).to(YieldingWaitStrategy.class);
               break;
          }
  
          if (config.getLowLatency()) {
              bind(RequestProcessor.class).to(RequestProcessorSkipCT.class).in(Singleton.class);
              bind(PersistenceProcessor.class).to(PersitenceProcessorNullImpl.class).in(Singleton.class);
          } else {
              bind(PersistenceProcessor.class).to(PersistenceProcessorImpl.class).in(Singleton.class);
              bind(RequestProcessor.class).to(RequestProcessorPersistCT.class).in(Singleton.class);
          }
  
          bind(ReplyProcessor.class).to(ReplyProcessorImpl.class).in(Singleton.class);
          bind(RetryProcessor.class).to(RetryProcessorImpl.class).in(Singleton.class);
  
      }
  
  }