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5012893c1d
This change renames directories in preparation for the great package rename. The repository is now in a broken state because the code itself hasn't been updated. However this should ensure that git correctly preserves history for each file.
53 lines
1.9 KiB
Java
53 lines
1.9 KiB
Java
// Copyright 2016 The Domain Registry Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package com.google.domain.registry.tools.server;
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import static com.google.common.collect.Iterators.partition;
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import static com.google.domain.registry.model.ofy.ObjectifyService.ofy;
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import com.google.appengine.tools.mapreduce.Reducer;
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import com.google.appengine.tools.mapreduce.ReducerInput;
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import com.googlecode.objectify.Key;
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import com.googlecode.objectify.VoidWork;
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import java.util.Iterator;
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import java.util.List;
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/** Reducer that deletes a group of keys, identified by a shared ancestor key. */
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public class KillAllEntitiesReducer extends Reducer<Key<?>, Key<?>, Void> {
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private static final long serialVersionUID = 7939357855356876000L;
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private static final int BATCH_SIZE = 100;
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@Override
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public void reduce(Key<?> ancestor, final ReducerInput<Key<?>> keysToDelete) {
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Iterator<List<Key<?>>> batches = partition(keysToDelete, BATCH_SIZE);
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while (batches.hasNext()) {
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final List<Key<?>> batch = batches.next();
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// Use a transaction to get retrying for free.
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ofy().transact(new VoidWork() {
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@Override
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public void vrun() {
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ofy().deleteWithoutBackup().keys(batch);
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}});
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getContext().incrementCounter("entities deleted", batch.size());
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for (Key<?> key : batch) {
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getContext().incrementCounter(String.format("%s deleted", key.getKind()));
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}
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}
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}
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}
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