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// Copyright (C) 2016 The Android Open Source Project
//
// 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.google.gerrit.server.notedb.rebuild;
import com.google.common.util.concurrent.ListenableFuture;
import com.google.common.util.concurrent.ListeningExecutorService;
import com.google.gerrit.reviewdb.client.Change;
import com.google.gerrit.reviewdb.client.Project;
import com.google.gerrit.reviewdb.server.ReviewDb;
import com.google.gerrit.server.notedb.ChangeBundle;
import com.google.gerrit.server.notedb.NoteDbUpdateManager;
import com.google.gerrit.server.notedb.NoteDbUpdateManager.Result;
import com.google.gwtorm.server.OrmException;
import com.google.gwtorm.server.SchemaFactory;
import java.io.IOException;
public abstract class ChangeRebuilder {
public static class NoPatchSetsException extends OrmException {
private static final long serialVersionUID = 1L;
NoPatchSetsException(Change.Id changeId) {
super("Change " + changeId + " cannot be rebuilt because it has no patch sets");
}
}
private final SchemaFactory<ReviewDb> schemaFactory;
protected ChangeRebuilder(SchemaFactory<ReviewDb> schemaFactory) {
this.schemaFactory = schemaFactory;
}
public final ListenableFuture<Result> rebuildAsync(
Change.Id id, ListeningExecutorService executor) {
return executor.submit(
() -> {
try (ReviewDb db = schemaFactory.open()) {
return rebuild(db, id);
}
});
}
/**
* Rebuild ReviewDb contents by copying from NoteDb.
*
* <p>Requires NoteDb to be the primary storage for the change.
*/
public abstract void rebuildReviewDb(ReviewDb db, Project.NameKey project, Change.Id changeId)
throws OrmException;
// In the following methods "rebuilding" always refers to copying the state
// from ReviewDb to NoteDb, i.e. assuming ReviewDb is the primary storage.
public abstract Result rebuild(ReviewDb db, Change.Id changeId) throws IOException, OrmException;
public abstract Result rebuildEvenIfReadOnly(ReviewDb db, Change.Id changeId)
throws IOException, OrmException;
public abstract Result rebuild(NoteDbUpdateManager manager, ChangeBundle bundle)
throws IOException, OrmException;
public abstract void buildUpdates(NoteDbUpdateManager manager, ChangeBundle bundle)
throws IOException, OrmException;
public abstract NoteDbUpdateManager stage(ReviewDb db, Change.Id changeId)
throws IOException, OrmException;
public abstract Result execute(ReviewDb db, Change.Id changeId, NoteDbUpdateManager manager)
throws OrmException, IOException;
}
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