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00ea99960a
This allows handling of N asynchronous deletion requests simultaneously instead of just 1. An accumulation pull queue is used for deletion requests, and the async deletion [] is now fired off whenever that pull queue isn't empty, and processes many tasks at once. This doesn't particularly take more time, because the bulk of the cost of the async delete operation is simply iterating over all DomainBases (which has to happen regardless of how many contacts and hosts are being deleted). ------------- Created by MOE: https://github.com/google/moe MOE_MIGRATED_REVID=133169336
92 lines
4.1 KiB
Java
92 lines
4.1 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.flows.host;
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import static google.registry.model.EppResourceUtils.queryDomainsUsingResource;
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import static google.registry.model.ofy.ObjectifyService.ofy;
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import com.google.common.base.Predicate;
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import com.google.common.collect.ImmutableMap;
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import com.google.common.collect.Iterables;
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import com.googlecode.objectify.Key;
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import google.registry.config.RegistryEnvironment;
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import google.registry.flows.EppException;
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import google.registry.flows.ResourceAsyncDeleteFlow;
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import google.registry.flows.async.AsyncFlowEnqueuer;
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import google.registry.flows.async.AsyncFlowUtils;
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import google.registry.flows.async.DeleteEppResourceAction;
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import google.registry.flows.async.DeleteHostResourceAction;
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import google.registry.model.domain.DomainBase;
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import google.registry.model.host.HostCommand.Delete;
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import google.registry.model.host.HostResource;
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import google.registry.model.host.HostResource.Builder;
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import google.registry.model.reporting.HistoryEntry;
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import javax.inject.Inject;
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/**
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* An EPP flow that deletes a host resource.
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*
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* @error {@link google.registry.flows.ResourceAsyncDeleteFlow.ResourceToDeleteIsReferencedException}
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* @error {@link google.registry.flows.ResourceFlowUtils.ResourceNotOwnedException}
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* @error {@link google.registry.flows.ResourceMutateFlow.ResourceToMutateDoesNotExistException}
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* @error {@link google.registry.flows.SingleResourceFlow.ResourceStatusProhibitsOperationException}
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*/
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public class HostDeleteFlow extends ResourceAsyncDeleteFlow<HostResource, Builder, Delete> {
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/** In {@link #isLinkedForFailfast}, check this (arbitrary) number of resources from the query. */
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private static final int FAILFAST_CHECK_COUNT = 5;
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@Inject AsyncFlowEnqueuer asyncFlowEnqueuer;
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@Inject HostDeleteFlow() {}
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@Override
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protected boolean isLinkedForFailfast(final Key<HostResource> key) {
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// Query for the first few linked domains, and if found, actually load them. The query is
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// eventually consistent and so might be very stale, but the direct load will not be stale,
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// just non-transactional. If we find at least one actual reference then we can reliably
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// fail. If we don't find any, we can't trust the query and need to do the full mapreduce.
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return Iterables.any(
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ofy().load().keys(
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queryDomainsUsingResource(
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HostResource.class, key, now, FAILFAST_CHECK_COUNT)).values(),
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new Predicate<DomainBase>() {
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@Override
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public boolean apply(DomainBase domain) {
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return domain.getNameservers().contains(key);
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}});
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}
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/** Enqueues an asynchronous host resource deletion. */
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@Override
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protected final void enqueueTasks() throws EppException {
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AsyncFlowUtils.enqueueMapreduceAction(
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DeleteHostResourceAction.class,
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ImmutableMap.of(
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DeleteEppResourceAction.PARAM_RESOURCE_KEY,
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Key.create(existingResource).getString(),
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DeleteEppResourceAction.PARAM_REQUESTING_CLIENT_ID,
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getClientId(),
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DeleteEppResourceAction.PARAM_IS_SUPERUSER,
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Boolean.toString(isSuperuser)),
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RegistryEnvironment.get().config().getAsyncDeleteFlowMapreduceDelay());
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// TODO(b/26140521): Switch over to batch async operations as follows:
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// asyncFlowEnqueuer.enqueueAsyncDelete(existingResource, getClientId(), isSuperuser);
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}
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@Override
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protected final HistoryEntry.Type getHistoryEntryType() {
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return HistoryEntry.Type.HOST_PENDING_DELETE;
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}
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}
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