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Simplify the logic for checking for finding linked contacts/hosts.

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This is preparatory refactoring for the next CL, which gets rid
of cloneWithLinkedStatus

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=145424322
This commit is contained in:
cgoldfeder 2017-01-24 08:56:26 -08:00 • committed by Ben McIlwain
parent b5cf58bf2c
commit 2bb61b82f4
2 changed files with 25 additions and 18 deletions
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37
java/google/registry/model/EppResourceUtils.java
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@ -25,6 +25,7 @@ import static google.registry.util.DateTimeUtils.latestOf;
import com.google.common.base.Function;
import com.googlecode.objectify.Key;
import com.googlecode.objectify.Result;
import com.googlecode.objectify.cmd.Query;
import com.googlecode.objectify.util.ResultNow;
import google.registry.model.EppResource.Builder;
import google.registry.model.EppResource.BuilderWithTransferData;
@ -34,7 +35,6 @@ import google.registry.model.contact.ContactResource;
import google.registry.model.domain.DomainApplication;
import google.registry.model.domain.DomainBase;
import google.registry.model.eppcommon.StatusValue;
import google.registry.model.host.HostResource;
import google.registry.model.index.ForeignKeyIndex;
import google.registry.model.ofy.CommitLogManifest;
import google.registry.model.ofy.CommitLogMutation;
@ -331,35 +331,42 @@ public final class EppResourceUtils {
}
/**
* Find keys of domains or applications that reference a specified contact or host.
* Returns a query for domains or applications that reference a specified contact or host.
*
* <p>This is an eventually consistent query.
*
* @param clazz the referent type (contact or host)
* @param key the referent key
* @param now the logical time of the check
* @param limit max number of keys to return
*/
public static List<Key<DomainBase>> queryDomainsUsingResource(
Class<? extends EppResource> clazz, Key<? extends EppResource> key, DateTime now, int limit) {
checkArgument(ContactResource.class.equals(clazz) || HostResource.class.equals(clazz));
public static Query<DomainBase> queryForLinkedDomains(
Key<? extends EppResource> key, DateTime now) {
boolean isContactKey = key.getKind().equals(Key.getKind(ContactResource.class));
return ofy()
.load()
.type(DomainBase.class)
.filter(clazz.equals(ContactResource.class) ? "allContacts.contact" : "nsHosts", key)
.filter("deletionTime >", now)
.limit(limit)
.keys()
.list();
.filter(isContactKey ? "allContacts.contact" : "nsHosts", key)
.filter("deletionTime >", now);
}
/**
* Returns whether the given contact or host is linked to (that is, referenced by) a domain.
*
* <p>This is an eventually consistent query.
*
* @param key the referent key
* @param now the logical time of the check
*/
public static boolean isLinked(Key<? extends EppResource> key, DateTime now) {
return queryForLinkedDomains(key, now).limit(1).count() > 0;
}
/** Clone a contact or host with an eventually-consistent notion of LINKED. */
public static EppResource cloneResourceWithLinkedStatus(EppResource resource, DateTime now) {
Builder<?, ?> builder = resource.asBuilder();
if (queryDomainsUsingResource(resource.getClass(), Key.create(resource), now, 1).isEmpty()) {
builder.removeStatusValue(StatusValue.LINKED);
} else {
if (isLinked(Key.create(resource), now)) {
builder.addStatusValue(StatusValue.LINKED);
} else {
builder.removeStatusValue(StatusValue.LINKED);
}
return builder.build();
}