content: /**
   * Copyright (C) 2024 AIDC-AI
   *
   * Licensed 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 com.alibaba.langengine.core.runnables;
  
  import lombok.Data;
  import lombok.extern.slf4j.Slf4j;
  
  import java.util.function.Consumer;
  
  /**
   * Retry a Runnable if it fails.
   *
   * @author xiaoxuan.lp
   */
  @Slf4j
  @Data
  public class RunnableRetry extends RunnableBinding {
  
      private int maxAttemptNumber = 3;
      private long intervalTime = 10;
  
      @Override
      public Object invoke(Object input, RunnableConfig config) {
          return invoke(input, config, 0, null);
      }
  
      @Override
      public Object stream(Object o, RunnableConfig config, Consumer chunkConsumer) {
          return invoke(o, config, 0, chunkConsumer);
      }
  
      private Object invoke(Object input, RunnableConfig config, int count, Consumer chunkConsumer) {
          try {
              if(chunkConsumer != null) {
                  if(config != null && config.isStreamLog()) {
                      return getBound().streamLog(input, config, chunkConsumer);
                  }
                  return getBound().stream(input, config, chunkConsumer);
              } else {
                  return getBound().invoke(input, config);
              }
          } catch (Throwable e) {
              log.error(String.format("[%d] RunnableRetry invoke error", count), e);
              if(count >= maxAttemptNumber) {
                  throw new RuntimeException("last time RunnableRetry invoke error", e);
              }
              // 停顿时间
              try {
                  Thread.sleep(intervalTime);
              } catch (InterruptedException ex) {
                  throw new RuntimeException(ex);
              }
              return invoke(input ,config, ++count, chunkConsumer);
          }
      }
  }