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c458c05801
The dark lord Gosling designed the Java package naming system so that ownership flows from the DNS system. Since we own the domain name registry.google, it seems only appropriate that we should use google.registry as our package name.
79 lines
2.8 KiB
Java
79 lines
2.8 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 google.registry.model.common;
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import static google.registry.model.ofy.ObjectifyService.allocateId;
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import static google.registry.model.ofy.ObjectifyService.ofy;
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import com.google.appengine.api.users.User;
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import com.google.common.base.Splitter;
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import com.googlecode.objectify.VoidWork;
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import com.googlecode.objectify.Work;
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import com.googlecode.objectify.annotation.Entity;
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import com.googlecode.objectify.annotation.Id;
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import google.registry.model.ImmutableObject;
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import google.registry.model.annotations.NotBackedUp;
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import google.registry.model.annotations.NotBackedUp.Reason;
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/**
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* A helper class to convert email addresses to GAE user ids. It does so by persisting a User
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* object with the email address to datastore, and then immediately reading it back.
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*/
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@Entity
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@NotBackedUp(reason = Reason.TRANSIENT)
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public class GaeUserIdConverter extends ImmutableObject {
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@Id
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public long id;
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User user;
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/**
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* Converts an email address to a GAE user id.
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*
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* @return Numeric GAE user id (in String form), or null if email address has no GAE id
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*/
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public static String convertEmailAddressToGaeUserId(String emailAddress) {
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final GaeUserIdConverter gaeUserIdConverter = new GaeUserIdConverter();
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gaeUserIdConverter.id = allocateId();
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gaeUserIdConverter.user =
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new User(emailAddress, Splitter.on('@').splitToList(emailAddress).get(1));
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try {
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// Perform these operations in a transactionless context to avoid enlisting in some outer
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// transaction (if any).
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ofy().doTransactionless(new VoidWork() {
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@Override
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public void vrun() {
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ofy().saveWithoutBackup().entity(gaeUserIdConverter).now();
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}});
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// The read must be done in its own transaction to avoid reading from the session cache.
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return ofy().transactNew(new Work<String>() {
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@Override
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public String run() {
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return ofy().load().entity(gaeUserIdConverter).safe().user.getUserId();
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}});
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} finally {
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ofy().doTransactionless(new VoidWork() {
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@Override
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public void vrun() {
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ofy().deleteWithoutBackup().entity(gaeUserIdConverter).now();
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}});
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}
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}
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}
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