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Make Registrar load methods return Optionals instead of Nullables

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This makes the code more understandable from callsites, and also forces
users of this function to deal with the situation where the registrar
with a given client ID might not be present (it was previously silently
NPEing from some of the callsites).

This also adds a test helper method loadRegistrar(clientId) that retains
the old functionality for terseness in tests. It also fixes some instances
of using the load method with the wrong cachedness -- some uses in high-
traffic situations (WHOIS) that should have caching, but also low-traffic
reporting that don't benefit from caching so might as well always be
current.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=162990468
This commit is contained in:
mcilwain 2017-07-24 14:43:20 -07:00 • committed by Ben McIlwain
parent 84fdeebc2f
commit d536cef20f
81 changed files with 707 additions and 602 deletions
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9
java/google/registry/tmch/LordnTask.java
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@ -16,6 +16,7 @@ package google.registry.tmch;
import static com.google.appengine.api.taskqueue.QueueFactory.getQueue;
import static com.google.common.base.Preconditions.checkNotNull;
import static com.google.common.base.Preconditions.checkState;
import static google.registry.model.ofy.ObjectifyService.ofy;
import com.google.appengine.api.taskqueue.LeaseOptions;
@ -26,6 +27,7 @@ import com.google.appengine.api.taskqueue.TaskOptions.Method;
import com.google.appengine.api.taskqueue.TransientFailureException;
import com.google.apphosting.api.DeadlineExceededException;
import com.google.common.base.Joiner;
import com.google.common.base.Optional;
import com.google.common.base.Strings;
import com.google.common.collect.ImmutableList;
import com.google.common.util.concurrent.Uninterruptibles;
@ -150,11 +152,10 @@ public class LordnTask {
/** Retrieves the IANA identifier for a registrar based on the client id. */
private static String getIanaIdentifier(String clientId) {
Registrar registrar = checkNotNull(
Registrar.loadByClientIdCached(clientId),
"No registrar found for client id: %s", clientId);
Optional<Registrar> registrar = Registrar.loadByClientIdCached(clientId);
checkState(registrar.isPresent(), "No registrar found for client id: %s", clientId);
// Return the string "null" for null identifiers, since some Registrar.Types such as OTE will
// have null iana ids.
return String.valueOf(registrar.getIanaIdentifier());
return String.valueOf(registrar.get().getIanaIdentifier());
}
}