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4be4fb0082
This is a 'yellow' Flogger migration CL. Yellow CLs should be mostly safe but include changes that are notable for one reason or another. Manual intervention may be required to address small issues. The comments in this CL indicate cases where suggested code changes should be double checked, or even modified. There may even be cases where files outside this CL are affected by changes to things such as logger visibility. However if a change does not have an associated comment then it should be safe. For more information, see [] Base CL: 197826149 ------------- Created by MOE: https://github.com/google/moe MOE_MIGRATED_REVID=198097990
89 lines
3.3 KiB
Java
89 lines
3.3 KiB
Java
// Copyright 2017 The Nomulus 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 google.registry.mapreduce.inputs;
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import static com.google.common.collect.ImmutableSet.toImmutableSet;
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import static google.registry.model.ofy.ObjectifyService.ofy;
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import com.google.appengine.api.datastore.Cursor;
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import com.google.appengine.api.datastore.QueryResultIterator;
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import com.google.appengine.tools.mapreduce.InputReader;
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import com.google.common.collect.ImmutableSet;
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import com.googlecode.objectify.Key;
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import com.googlecode.objectify.cmd.Query;
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import google.registry.model.EppResource;
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import google.registry.model.index.EppResourceIndex;
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import google.registry.model.index.EppResourceIndexBucket;
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import javax.annotation.Nullable;
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/** Base class for {@link InputReader} classes that map over {@link EppResourceIndex}. */
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abstract class EppResourceBaseReader<T> extends RetryingInputReader<EppResourceIndex, T> {
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/** Number of bytes in 1MB of memory, used for memory estimates. */
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static final long ONE_MB = 1024 * 1024;
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private static final long serialVersionUID = 7942584269402339168L;
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/**
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* The resource kinds to filter for.
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*
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* <p>This can be empty, or any of {"ContactResource", "HostResource", "DomainBase"}. It will
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* never contain "EppResource", "DomainResource" or "DomainApplication" since these aren't
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* actual kinds in Datastore.
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*/
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private final ImmutableSet<String> filterKinds;
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private final Key<EppResourceIndexBucket> bucketKey;
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private final long memoryEstimate;
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EppResourceBaseReader(
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Key<EppResourceIndexBucket> bucketKey,
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long memoryEstimate,
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ImmutableSet<String> filterKinds) {
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this.bucketKey = bucketKey;
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this.memoryEstimate = memoryEstimate;
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this.filterKinds = filterKinds;
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}
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@Override
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public QueryResultIterator<EppResourceIndex> getQueryIterator(@Nullable Cursor cursor) {
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return startQueryAt(query(), cursor).iterator();
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}
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@Override
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public int getTotal() {
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return query().count();
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}
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/** Query for children of this bucket. */
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Query<EppResourceIndex> query() {
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Query<EppResourceIndex> query = ofy().load().type(EppResourceIndex.class).ancestor(bucketKey);
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return filterKinds.isEmpty() ? query : query.filter("kind in", filterKinds);
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}
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/** Returns the estimated memory that will be used by this reader in bytes. */
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@Override
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public long estimateMemoryRequirement() {
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return memoryEstimate;
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}
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static <R extends EppResource> ImmutableSet<String> varargsToKinds(
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ImmutableSet<Class<? extends R>> resourceClasses) {
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// Ignore EppResource when finding kinds, since it doesn't have one and doesn't imply filtering.
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return resourceClasses.contains(EppResource.class)
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? ImmutableSet.of()
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: resourceClasses.stream().map(Key::getKind).collect(toImmutableSet());
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}
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}
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