Line data    Source code

       1             : // Copyright (C) 2020 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.google.common.collect.ImmutableList;
      18             : import com.google.gerrit.extensions.restapi.RestApiException;
      19             : import com.google.gerrit.server.submit.MergeOpRepoManager;
      20             : import java.util.Collection;
      21             : import java.util.Optional;
      22             : import java.util.stream.Collectors;
      23             : 
      24             : public class SubmissionExecutor {
      25             : 
      26             :   private final ImmutableList<SubmissionListener> submissionListeners;
      27             :   private final boolean dryrun;
      28          69 :   private ImmutableList<BatchUpdateListener> additionalListeners = ImmutableList.of();
      29             : 
      30          69 :   public SubmissionExecutor(boolean dryrun, ImmutableList<SubmissionListener> submissionListeners) {
      31          69 :     this.dryrun = dryrun;
      32          69 :     this.submissionListeners = submissionListeners;
      33          69 :     if (dryrun) {
      34           0 :       submissionListeners.forEach(SubmissionListener::setDryrun);
      35             :     }
      36          69 :   }
      37             : 
      38             :   /**
      39             :    * Set additional listeners. These can be set again in each try (or will be reused if not
      40             :    * overwritten).
      41             :    */
      42             :   public void setAdditionalBatchUpdateListeners(
      43             :       ImmutableList<BatchUpdateListener> additionalListeners) {
      44          53 :     this.additionalListeners = additionalListeners;
      45          53 :   }
      46             : 
      47             :   /** Execute the batch updates, reporting to all the Submission and BatchUpdateListeners. */
      48             :   public void execute(Collection<BatchUpdate> updates) throws RestApiException, UpdateException {
      49          69 :     submissionListeners.forEach(l -> l.beforeBatchUpdates(updates));
      50             : 
      51          69 :     ImmutableList<BatchUpdateListener> listeners =
      52             :         new ImmutableList.Builder<BatchUpdateListener>()
      53          69 :             .addAll(additionalListeners)
      54          69 :             .addAll(
      55          69 :                 submissionListeners.stream()
      56          69 :                     .map(l -> l.listensToBatchUpdates())
      57          69 :                     .filter(Optional::isPresent)
      58          69 :                     .map(Optional::get)
      59          69 :                     .collect(Collectors.toList()))
      60          69 :             .build();
      61          69 :     BatchUpdate.execute(updates, listeners, dryrun);
      62          69 :   }
      63             : 
      64             :   /**
      65             :    * Caller invokes this when done with the submission (either because everything succeeded or gave
      66             :    * up retrying).
      67             :    */
      68             :   public void afterExecutions(MergeOpRepoManager orm) {
      69          69 :     submissionListeners.forEach(l -> l.afterSubmission(orm));
      70          69 :   }
      71             : }