Line data    Source code

       1             : // Copyright (C) 2019 The Android Open Source Project
       2             : //
       3             : // Licensed under the Apache License, Version 2.0 (the "License");
       4             : // you may not use this file except in compliance with the License.
       5             : // You may obtain a copy of the License at
       6             : //
       7             : // http://www.apache.org/licenses/LICENSE-2.0
       8             : //
       9             : // Unless required by applicable law or agreed to in writing, software
      10             : // distributed under the License is distributed on an "AS IS" BASIS,
      11             : // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      12             : // See the License for the specific language governing permissions and
      13             : // limitations under the License.
      14             : 
      15             : package com.google.gerrit.server.update;
      16             : 
      17             : import com.github.rholder.retry.RetryListener;
      18             : import com.google.common.base.Throwables;
      19             : import com.google.gerrit.extensions.restapi.RestApiException;
      20             : import java.util.function.Consumer;
      21             : import java.util.function.Predicate;
      22             : 
      23             : /**
      24             :  * A change action that is executed with retrying.
      25             :  *
      26             :  * <p>Instances of this class are created via {@link RetryHelper#changeUpdate(String,
      27             :  * ChangeAction)}.
      28             :  *
      29             :  * <p>In contrast to normal {@link RetryableAction.Action}s that are called via {@link
      30             :  * RetryableAction} {@link ChangeAction}s get a {@link BatchUpdate.Factory} provided.
      31             :  *
      32             :  * <p>In addition when a change action is called any exception that is not an unchecked exception
      33             :  * and neither {@link UpdateException} nor {@link RestApiException} get wrapped into an {@link
      34             :  * UpdateException}.
      35             :  */
      36             : public class RetryableChangeAction<T> extends RetryableAction<T> {
      37             :   @FunctionalInterface
      38             :   public interface ChangeAction<T> {
      39             :     T call(BatchUpdate.Factory batchUpdateFactory) throws Exception;
      40             :   }
      41             : 
      42             :   RetryableChangeAction(
      43             :       RetryHelper retryHelper,
      44             :       BatchUpdate.Factory updateFactory,
      45             :       String actionName,
      46             :       ChangeAction<T> changeAction) {
      47          70 :     super(
      48          70 :         retryHelper, ActionType.CHANGE_UPDATE, actionName, () -> changeAction.call(updateFactory));
      49          70 :   }
      50             : 
      51             :   @Override
      52             :   public RetryableChangeAction<T> retryOn(Predicate<Throwable> exceptionPredicate) {
      53          53 :     super.retryOn(exceptionPredicate);
      54          53 :     return this;
      55             :   }
      56             : 
      57             :   @Override
      58             :   public RetryableChangeAction<T> retryWithTrace(Predicate<Throwable> exceptionPredicate) {
      59           0 :     super.retryWithTrace(exceptionPredicate);
      60           0 :     return this;
      61             :   }
      62             : 
      63             :   @Override
      64             :   public RetryableChangeAction<T> onAutoTrace(Consumer<String> traceIdConsumer) {
      65           0 :     super.onAutoTrace(traceIdConsumer);
      66           0 :     return this;
      67             :   }
      68             : 
      69             :   @Override
      70             :   public RetryableChangeAction<T> listener(RetryListener retryListener) {
      71          53 :     super.listener(retryListener);
      72          53 :     return this;
      73             :   }
      74             : 
      75             :   @Override
      76             :   public RetryableChangeAction<T> defaultTimeoutMultiplier(int multiplier) {
      77          67 :     super.defaultTimeoutMultiplier(multiplier);
      78          67 :     return this;
      79             :   }
      80             : 
      81             :   @Override
      82             :   public T call() throws UpdateException, RestApiException {
      83             :     try {
      84          70 :       return super.call();
      85          18 :     } catch (Exception e) {
      86          17 :       Throwables.throwIfUnchecked(e);
      87          17 :       Throwables.throwIfInstanceOf(e, UpdateException.class);
      88           0 :       Throwables.throwIfInstanceOf(e, RestApiException.class);
      89           0 :       throw new UpdateException(e);
      90             :     }
      91             :   }
      92             : }