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.patch;
      16             : 
      17             : import static com.google.common.base.Preconditions.checkState;
      18             : 
      19             : import com.google.common.collect.ImmutableList;
      20             : import com.google.common.flogger.FluentLogger;
      21             : import com.google.gerrit.common.data.PatchScript;
      22             : import com.google.gerrit.entities.Change;
      23             : import com.google.gerrit.entities.FixReplacement;
      24             : import com.google.gerrit.entities.PatchSet;
      25             : import com.google.gerrit.extensions.client.DiffPreferencesInfo;
      26             : import com.google.gerrit.extensions.restapi.AuthException;
      27             : import com.google.gerrit.extensions.restapi.ResourceConflictException;
      28             : import com.google.gerrit.extensions.restapi.ResourceNotFoundException;
      29             : import com.google.gerrit.server.git.LargeObjectException;
      30             : import com.google.gerrit.server.notedb.ChangeNotes;
      31             : import com.google.gerrit.server.permissions.ChangePermission;
      32             : import com.google.gerrit.server.permissions.PermissionBackend;
      33             : import com.google.gerrit.server.permissions.PermissionBackendException;
      34             : import com.google.gerrit.server.project.InvalidChangeOperationException;
      35             : import com.google.gerrit.server.project.NoSuchChangeException;
      36             : import com.google.gerrit.server.project.ProjectCache;
      37             : import com.google.gerrit.server.project.ProjectState;
      38             : import com.google.inject.Provider;
      39             : import com.google.inject.assistedinject.Assisted;
      40             : import com.google.inject.assistedinject.AssistedInject;
      41             : import java.io.IOException;
      42             : import java.util.concurrent.Callable;
      43             : import org.eclipse.jgit.lib.ObjectId;
      44             : import org.eclipse.jgit.lib.Repository;
      45             : 
      46             : public class PatchScriptFactoryForAutoFix implements Callable<PatchScript> {
      47             : 
      48           2 :   private static final FluentLogger logger = FluentLogger.forEnclosingClass();
      49             : 
      50             :   public interface Factory {
      51             : 
      52             :     PatchScriptFactoryForAutoFix create(
      53             :         Repository git,
      54             :         ChangeNotes notes,
      55             :         String fileName,
      56             :         PatchSet patchSet,
      57             :         ImmutableList<FixReplacement> fixReplacements,
      58             :         DiffPreferencesInfo diffPrefs);
      59             :   }
      60             : 
      61             :   private final PermissionBackend permissionBackend;
      62             :   private final ProjectCache projectCache;
      63             :   private final Change.Id changeId;
      64             :   private final ChangeNotes notes;
      65             :   private final Provider<PatchScriptBuilder> builderFactory;
      66             :   private final Repository git;
      67             :   private final PatchSet patchSet;
      68             :   private final String fileName;
      69             :   private final DiffPreferencesInfo diffPrefs;
      70             :   private final ImmutableList<FixReplacement> fixReplacements;
      71             : 
      72             :   @AssistedInject
      73             :   PatchScriptFactoryForAutoFix(
      74             :       Provider<PatchScriptBuilder> builderFactory,
      75             :       PermissionBackend permissionBackend,
      76             :       ProjectCache projectCache,
      77             :       @Assisted Repository git,
      78             :       @Assisted ChangeNotes notes,
      79             :       @Assisted String fileName,
      80             :       @Assisted PatchSet patchSet,
      81             :       @Assisted ImmutableList<FixReplacement> fixReplacements,
      82           2 :       @Assisted DiffPreferencesInfo diffPrefs) {
      83           2 :     this.notes = notes;
      84           2 :     this.permissionBackend = permissionBackend;
      85           2 :     this.projectCache = projectCache;
      86           2 :     this.changeId = patchSet.id().changeId();
      87           2 :     this.git = git;
      88           2 :     this.patchSet = patchSet;
      89           2 :     this.fileName = fileName;
      90           2 :     this.fixReplacements = fixReplacements;
      91           2 :     this.builderFactory = builderFactory;
      92           2 :     this.diffPrefs = diffPrefs;
      93           2 :   }
      94             : 
      95             :   @Override
      96             :   public PatchScript call()
      97             :       throws LargeObjectException, AuthException, InvalidChangeOperationException, IOException,
      98             :           PermissionBackendException, ResourceNotFoundException {
      99             : 
     100           2 :     if (!permissionBackend.currentUser().change(notes).test(ChangePermission.READ)) {
     101           0 :       throw new NoSuchChangeException(changeId);
     102             :     }
     103             : 
     104           2 :     if (!projectCache
     105           2 :         .get(notes.getProjectName())
     106           2 :         .map(ProjectState::statePermitsRead)
     107           2 :         .orElse(false)) {
     108           0 :       throw new NoSuchChangeException(changeId);
     109             :     }
     110             : 
     111           2 :     return createPatchScript();
     112             :   }
     113             : 
     114             :   private PatchScript createPatchScript() throws LargeObjectException, ResourceNotFoundException {
     115           2 :     checkState(patchSet.id().get() != 0, "edit not supported for left side");
     116           2 :     PatchScriptBuilder b = newBuilder();
     117             :     try {
     118           2 :       ObjectId baseId = patchSet.commitId();
     119           2 :       return b.toPatchScript(git, baseId, fileName, fixReplacements);
     120           0 :     } catch (ResourceConflictException e) {
     121           0 :       logger.atSevere().withCause(e).log("AutoFix replacements is not valid");
     122           0 :       throw new IllegalStateException("AutoFix replacements is not valid", e);
     123           0 :     } catch (IOException e) {
     124           0 :       logger.atSevere().withCause(e).log("File content unavailable");
     125           0 :       throw new NoSuchChangeException(notes.getChangeId(), e);
     126           0 :     } catch (org.eclipse.jgit.errors.LargeObjectException err) {
     127           0 :       throw new LargeObjectException("File content is too large", err);
     128             :     }
     129             :   }
     130             : 
     131             :   private PatchScriptBuilder newBuilder() {
     132           2 :     PatchScriptBuilder b = builderFactory.get();
     133           2 :     b.setDiffPrefs(diffPrefs);
     134           2 :     return b;
     135             :   }
     136             : }