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e2528875b2
This eliminates the use of Objectify polymorphism for EPP resources entirely (yay!), which makes the Registry 3.0 database migration easier. It is unfortunate that the naming parallelism of EppResources is lost between ContactResource, HostResource, and DomainResource, but the actual type as far as Datastore was concerned was DomainBase all along, and it would be a much more substantial data migration to allow us to continue using the class name DomainResource now that we're no longer using Objectify polymorphism. This simply isn't worth it. This also removes the polymorphic Datastore indexes (which will no longer function as of this change). The non-polymorphic replacement indexes were added in [] ------------- Created by MOE: https://github.com/google/moe MOE_MIGRATED_REVID=230930546
120 lines
4.5 KiB
Java
120 lines
4.5 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.rde.imports;
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import static com.google.common.math.IntMath.divide;
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import static java.math.RoundingMode.CEILING;
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import static java.math.RoundingMode.FLOOR;
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import com.google.appengine.tools.cloudstorage.GcsFilename;
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import com.google.appengine.tools.cloudstorage.GcsService;
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import com.google.appengine.tools.cloudstorage.GcsServiceFactory;
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import com.google.appengine.tools.cloudstorage.RetryParams;
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import com.google.appengine.tools.mapreduce.Input;
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import com.google.appengine.tools.mapreduce.InputReader;
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import com.google.common.collect.ImmutableList;
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import google.registry.config.RegistryConfig.ConfigModule;
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import google.registry.gcs.GcsUtils;
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import google.registry.model.domain.DomainBase;
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import google.registry.rde.imports.RdeParser.RdeHeader;
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import google.registry.xjc.JaxbFragment;
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import google.registry.xjc.rdedomain.XjcRdeDomainElement;
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import java.io.InputStream;
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import java.util.List;
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import java.util.Optional;
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/**
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* A MapReduce {@link Input} that imports {@link DomainBase} objects from an escrow file.
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*
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* <p>If a mapShards parameter has been specified, up to that many readers will be created
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* so that each map shard has one reader. If a mapShards parameter has not been specified, a
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* default number of readers will be created.
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*/
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public class RdeDomainInput extends Input<JaxbFragment<XjcRdeDomainElement>> {
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private static final long serialVersionUID = -366966393494008712L;
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private static final GcsService GCS_SERVICE =
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GcsServiceFactory.createGcsService(RetryParams.getDefaultInstance());
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/**
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* Default number of readers if map shards are not specified.
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*/
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private static final int DEFAULT_READERS = 50;
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/**
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* Minimum number of records per reader.
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*/
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private static final int MINIMUM_RECORDS_PER_READER = 100;
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/**
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* Optional argument to explicitly specify the number of readers.
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*/
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private final int numReaders;
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private final String importBucketName;
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private final String importFileName;
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public RdeDomainInput(
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Optional<Integer> mapShards, String importBucketName, String importFileName) {
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this.numReaders = mapShards.orElse(DEFAULT_READERS);
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this.importBucketName = importBucketName;
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this.importFileName = importFileName;
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}
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@Override
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public List<? extends InputReader<JaxbFragment<XjcRdeDomainElement>>> createReaders() {
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int numReaders = this.numReaders;
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RdeHeader header = newParser().getHeader();
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int numberOfDomains = header.getDomainCount().intValue();
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if (numberOfDomains / numReaders < MINIMUM_RECORDS_PER_READER) {
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numReaders = divide(numberOfDomains, MINIMUM_RECORDS_PER_READER, FLOOR);
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// use at least one reader
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numReaders = Math.max(numReaders, 1);
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}
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ImmutableList.Builder<RdeDomainReader> builder = new ImmutableList.Builder<>();
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int domainsPerReader =
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Math.max(MINIMUM_RECORDS_PER_READER, divide(numberOfDomains, numReaders, CEILING));
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int offset = 0;
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for (int i = 0; i < numReaders; i++) {
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builder = builder.add(newReader(offset, domainsPerReader));
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offset += domainsPerReader;
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}
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return builder.build();
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}
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private RdeDomainReader newReader(int offset, int maxResults) {
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return new RdeDomainReader(importBucketName, importFileName, offset, maxResults);
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}
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private RdeParser newParser() {
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GcsUtils utils = new GcsUtils(GCS_SERVICE, ConfigModule.provideGcsBufferSize());
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GcsFilename filename = new GcsFilename(importBucketName, importFileName);
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try (InputStream xmlInput = utils.openInputStream(filename)) {
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return new RdeParser(xmlInput);
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} catch (Exception e) {
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throw new InitializationException(
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String.format("Error opening rde file %s/%s", importBucketName, importFileName), e);
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}
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}
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/**
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* Thrown when the input cannot initialize properly.
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*/
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private static class InitializationException extends RuntimeException {
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public InitializationException(String message, Throwable cause) {
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super(message, cause);
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}
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}
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}
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