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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.
85 lines
3.4 KiB
Java
85 lines
3.4 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.flows;
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import static com.google.domain.registry.model.eppoutput.Result.Code.SuccessWithActionPending;
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import static com.google.domain.registry.model.ofy.ObjectifyService.ofy;
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import com.google.domain.registry.flows.EppException.AssociationProhibitsOperationException;
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import com.google.domain.registry.model.EppResource;
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import com.google.domain.registry.model.EppResource.Builder;
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import com.google.domain.registry.model.domain.ReferenceUnion;
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import com.google.domain.registry.model.eppcommon.StatusValue;
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import com.google.domain.registry.model.eppinput.ResourceCommand.SingleResourceCommand;
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import com.google.domain.registry.model.eppoutput.Result.Code;
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import com.google.domain.registry.model.index.ForeignKeyIndex;
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import com.googlecode.objectify.Work;
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/**
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* An EPP flow that deletes a resource asynchronously (i.e. via mapreduce).
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*
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* @param <R> the resource type being changed
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* @param <B> a builder for the resource
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* @param <C> the command type, marshalled directly from the epp xml
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*/
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public abstract class ResourceAsyncDeleteFlow
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<R extends EppResource, B extends Builder<R, ?>, C extends SingleResourceCommand>
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extends ResourceDeleteFlow<R, C> {
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@Override
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public void failfast() throws ResourceToDeleteIsReferencedException {
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// Enter a transactionless context briefly.
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boolean isLinked = ofy().doTransactionless(new Work<Boolean>() {
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@Override
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public Boolean run() {
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ForeignKeyIndex<R> fki = ForeignKeyIndex.load(resourceClass, targetId, now);
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if (fki == null) {
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// Don't failfast on non-existence. We could, but that would duplicate code paths in a way
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// that would be hard to reason about, and there's no real gain in doing so.
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return false;
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}
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return isLinkedForFailfast(ReferenceUnion.create(fki.getReference()));
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}
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});
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if (isLinked) {
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throw new ResourceToDeleteIsReferencedException();
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}
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}
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/** Subclasses must override this to check if the supplied reference has incoming links. */
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protected abstract boolean isLinkedForFailfast(ReferenceUnion<R> ref);
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@Override
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protected final R createOrMutateResource() {
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@SuppressWarnings("unchecked")
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B builder = (B) existingResource.asBuilder().addStatusValue(StatusValue.PENDING_DELETE);
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return builder.build();
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}
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/** Subclasses can override this to return a different success result code. */
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@Override
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protected Code getDeleteResultCode() {
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return SuccessWithActionPending;
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}
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/** Resource to be deleted has active incoming references. */
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public static class ResourceToDeleteIsReferencedException
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extends AssociationProhibitsOperationException {
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public ResourceToDeleteIsReferencedException() {
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super("Resource to be deleted has active incoming references");
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}
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}
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}
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