google-nomulus/java/google/registry/flows/host/HostDeleteFlow.java
cgoldfeder c9a16f7f11 Dagger, meet Flows. Flows, meet Dagger.
Daggerizes all of the EPP flows. This does not change anything yet
about the flows themselves, just how they are invoked, but after
this CL it's safe to @Inject things into flow classes.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=125382478
2016-06-27 16:26:29 -04:00

92 lines
3.8 KiB
Java

// Copyright 2016 The Domain Registry Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package google.registry.flows.host;
import static google.registry.model.EppResourceUtils.queryDomainsUsingResource;
import static google.registry.model.ofy.ObjectifyService.ofy;
import com.google.common.base.Predicate;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.Iterables;
import com.googlecode.objectify.Key;
import com.googlecode.objectify.Ref;
import google.registry.config.RegistryEnvironment;
import google.registry.flows.EppException;
import google.registry.flows.ResourceAsyncDeleteFlow;
import google.registry.flows.async.AsyncFlowUtils;
import google.registry.flows.async.DeleteEppResourceAction;
import google.registry.flows.async.DeleteHostResourceAction;
import google.registry.model.domain.DomainBase;
import google.registry.model.host.HostCommand.Delete;
import google.registry.model.host.HostResource;
import google.registry.model.host.HostResource.Builder;
import google.registry.model.reporting.HistoryEntry;
import javax.inject.Inject;
/**
* An EPP flow that deletes a host resource.
*
* @error {@link google.registry.flows.ResourceAsyncDeleteFlow.ResourceToDeleteIsReferencedException}
* @error {@link google.registry.flows.ResourceFlowUtils.ResourceNotOwnedException}
* @error {@link google.registry.flows.ResourceMutateFlow.ResourceToMutateDoesNotExistException}
* @error {@link google.registry.flows.SingleResourceFlow.ResourceStatusProhibitsOperationException}
*/
public class HostDeleteFlow extends ResourceAsyncDeleteFlow<HostResource, Builder, Delete> {
/** In {@link #isLinkedForFailfast}, check this (arbitrary) number of resources from the query. */
private static final int FAILFAST_CHECK_COUNT = 5;
@Inject HostDeleteFlow() {}
@Override
protected boolean isLinkedForFailfast(final Ref<HostResource> ref) {
// Query for the first few linked domains, and if found, actually load them. The query is
// eventually consistent and so might be very stale, but the direct load will not be stale,
// just non-transactional. If we find at least one actual reference then we can reliably
// fail. If we don't find any, we can't trust the query and need to do the full mapreduce.
return Iterables.any(
ofy().load().keys(
queryDomainsUsingResource(
HostResource.class, ref, now, FAILFAST_CHECK_COUNT)).values(),
new Predicate<DomainBase>() {
@Override
public boolean apply(DomainBase domain) {
return domain.getNameservers().contains(ref);
}});
}
/** Enqueues a host resource deletion on the mapreduce queue. */
@Override
protected final void enqueueTasks() throws EppException {
AsyncFlowUtils.enqueueMapreduceAction(
DeleteHostResourceAction.class,
ImmutableMap.of(
DeleteEppResourceAction.PARAM_RESOURCE_KEY,
Key.create(existingResource).getString(),
DeleteEppResourceAction.PARAM_REQUESTING_CLIENT_ID,
getClientId(),
DeleteEppResourceAction.PARAM_IS_SUPERUSER,
Boolean.toString(isSuperuser)),
RegistryEnvironment.get().config().getAsyncDeleteFlowMapreduceDelay());
}
@Override
protected final HistoryEntry.Type getHistoryEntryType() {
return HistoryEntry.Type.HOST_PENDING_DELETE;
}
}