Line data    Source code

       1             : // Copyright (C) 2017 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.git.receive;
      16             : 
      17             : import static com.google.common.base.Preconditions.checkState;
      18             : 
      19             : import com.google.gerrit.server.git.HookUtil;
      20             : import java.util.Map;
      21             : import org.eclipse.jgit.lib.Ref;
      22             : import org.eclipse.jgit.transport.AdvertiseRefsHook;
      23             : import org.eclipse.jgit.transport.ReceivePack;
      24             : import org.eclipse.jgit.transport.ServiceMayNotContinueException;
      25             : import org.eclipse.jgit.transport.UploadPack;
      26             : 
      27             : /**
      28             :  * Hook that scans all refs and holds onto the results reference.
      29             :  *
      30             :  * <p>This allows a caller who has an {@code AllRefsWatcher} instance to get the full map of refs in
      31             :  * the repo, even if refs are filtered by a later hook or filter.
      32             :  */
      33          97 : class AllRefsWatcher implements AdvertiseRefsHook {
      34             :   private Map<String, Ref> allRefs;
      35             : 
      36             :   @Override
      37             :   public void advertiseRefs(ReceivePack rp) throws ServiceMayNotContinueException {
      38          97 :     allRefs = HookUtil.ensureAllRefsAdvertised(rp);
      39          97 :   }
      40             : 
      41             :   @Override
      42             :   public void advertiseRefs(UploadPack uploadPack) {
      43           0 :     throw new UnsupportedOperationException();
      44             :   }
      45             : 
      46             :   Map<String, Ref> getAllRefs() {
      47          96 :     checkState(allRefs != null, "getAllRefs() only valid after refs were advertised");
      48          96 :     return allRefs;
      49             :   }
      50             : }