Remove the concept of a GAE service endpoint (#2869)

We don't need to support the mix of GAE and GKE any more so we can get
rid of the GaeService bits and unify everything under one constant
service. This also allows us to reduce the number of services down to
four (FE, BE, PUBAPI, console) which is nice.

core/src/main/java/google/registry/batch/CannedScriptExecutionAction.java

@@ -20,7 +20,6 @@ import static java.nio.charset.StandardCharsets.UTF_8;
 
 import com.google.common.flogger.FluentLogger;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.Parameter;
 import google.registry.request.Response;
 import google.registry.request.UrlConnectionService;
@@ -43,7 +42,7 @@ import javax.net.ssl.HttpsURLConnection;
  * --service BACKEND -X POST -u '/_dr/task/executeCannedScript}'}
  */
 @Action(
-    service = GaeService.BACKEND,
+    service = Action.Service.BACKEND,
     path = "/_dr/task/executeCannedScript",
     method = {POST, GET},
     automaticallyPrintOk = true,

core/src/main/java/google/registry/batch/CheckBulkComplianceAction.java

@@ -27,7 +27,6 @@ import google.registry.model.domain.token.AllocationToken;
 import google.registry.model.domain.token.BulkPricingPackage;
 import google.registry.model.registrar.Registrar;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.auth.Auth;
 import google.registry.ui.server.SendEmailUtils;
 import google.registry.util.Clock;
@@ -39,7 +38,10 @@ import org.joda.time.Days;
  * An action that checks all {@link BulkPricingPackage} objects for compliance with their max create
  * limit.
  */
-@Action(service = GaeService.BACKEND, path = CheckBulkComplianceAction.PATH, auth = Auth.AUTH_ADMIN)
+@Action(
+    service = Action.Service.BACKEND,
+    path = CheckBulkComplianceAction.PATH,
+    auth = Auth.AUTH_ADMIN)
 public class CheckBulkComplianceAction implements Runnable {
 
   public static final String PATH = "/_dr/task/checkBulkCompliance";

core/src/main/java/google/registry/batch/CloudTasksUtils.java

@@ -43,7 +43,6 @@ import google.registry.config.CredentialModule.ApplicationDefaultCredential;
 import google.registry.config.RegistryConfig.Config;
 import google.registry.request.Action;
 import google.registry.request.Action.Method;
-import google.registry.request.Action.Service;
 import google.registry.util.Clock;
 import google.registry.util.CollectionUtils;
 import google.registry.util.GoogleCredentialsBundle;
@@ -175,7 +174,7 @@ public class CloudTasksUtils implements Serializable {
    *     the worker service</a>
    */
   protected Task createTask(
-      String path, Method method, Service service, Multimap<String, String> params) {
+      String path, Method method, Action.Service service, Multimap<String, String> params) {
     checkArgument(
         path != null && !path.isEmpty() && path.charAt(0) == '/',
         "The path must start with a '/'.");
@@ -231,9 +230,7 @@ public class CloudTasksUtils implements Serializable {
         method,
         actionClazz.getSimpleName(),
         allowedMethods);
-    Service service =
-        RegistryEnvironment.isOnJetty() ? Action.ServiceGetter.get(action) : action.service();
-    return createTask(path, method, service, params);
+    return createTask(path, method, action.service(), params);
   }
 
   /**
@@ -256,7 +253,7 @@ public class CloudTasksUtils implements Serializable {
   public Task createTaskWithJitter(
       String path,
       Method method,
-      Service service,
+      Action.Service service,
       Multimap<String, String> params,
       Optional<Integer> jitterSeconds) {
     if (jitterSeconds.isEmpty() || jitterSeconds.get() <= 0) {
@@ -297,9 +294,7 @@ public class CloudTasksUtils implements Serializable {
         "Action class %s is not annotated with @Action",
         actionClazz.getSimpleName());
     String path = action.path();
-    Service service =
-        RegistryEnvironment.isOnJetty() ? Action.ServiceGetter.get(action) : action.service();
-    return createTaskWithJitter(path, method, service, params, jitterSeconds);
+    return createTaskWithJitter(path, method, action.service(), params, jitterSeconds);
   }
 
   /**
@@ -319,7 +314,7 @@ public class CloudTasksUtils implements Serializable {
   private Task createTaskWithDelay(
       String path,
       Method method,
-      Service service,
+      Action.Service service,
       Multimap<String, String> params,
       Duration delay) {
     if (delay.isEqual(Duration.ZERO)) {
@@ -354,9 +349,7 @@ public class CloudTasksUtils implements Serializable {
       Duration delay) {
     Action action = getAction(actionClazz);
     String path = action.path();
-    Service service =
-        RegistryEnvironment.isOnJetty() ? Action.ServiceGetter.get(action) : action.service();
-    return createTaskWithDelay(path, method, service, params, delay);
+    return createTaskWithDelay(path, method, action.service(), params, delay);
   }
 
   private static Action getAction(Class<? extends Runnable> actionClazz) {

core/src/main/java/google/registry/batch/DeleteExpiredDomainsAction.java

@@ -37,7 +37,6 @@ import google.registry.model.eppcommon.ProtocolDefinition;
 import google.registry.model.eppoutput.EppOutput;
 import google.registry.persistence.transaction.QueryComposer.Comparator;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.Response;
 import google.registry.request.auth.Auth;
 import google.registry.request.lock.LockHandler;
@@ -68,7 +67,7 @@ import org.joda.time.Duration;
  * this action runs, thus alerting us that human action is needed to correctly process the delete.
  */
 @Action(
-    service = GaeService.BACKEND,
+    service = Action.Service.BACKEND,
     path = DeleteExpiredDomainsAction.PATH,
     auth = Auth.AUTH_ADMIN)
 public class DeleteExpiredDomainsAction implements Runnable {

core/src/main/java/google/registry/batch/DeleteLoadTestDataAction.java

@@ -37,7 +37,6 @@ import google.registry.model.reporting.HistoryEntry;
 import google.registry.model.reporting.HistoryEntryDao;
 import google.registry.persistence.VKey;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.Parameter;
 import google.registry.request.auth.Auth;
 import google.registry.util.Clock;
@@ -55,7 +54,7 @@ import jakarta.inject.Inject;
  * production.
  */
 @Action(
-    service = GaeService.BACKEND,
+    service = Action.Service.BACKEND,
     path = "/_dr/task/deleteLoadTestData",
     method = POST,
     auth = Auth.AUTH_ADMIN)

core/src/main/java/google/registry/batch/DeleteProberDataAction.java

@@ -42,7 +42,6 @@ import google.registry.model.domain.Domain;
 import google.registry.model.domain.DomainHistory;
 import google.registry.model.tld.Tld.TldType;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.Parameter;
 import google.registry.request.auth.Auth;
 import google.registry.util.RegistryEnvironment;
@@ -59,7 +58,7 @@ import org.joda.time.Duration;
  * billing events, along with their ForeignKeyDomainIndex entities.
  */
 @Action(
-    service = GaeService.BACKEND,
+    service = Action.Service.BACKEND,
     path = "/_dr/task/deleteProberData",
     method = POST,
     auth = Auth.AUTH_ADMIN)

core/src/main/java/google/registry/batch/ExpandBillingRecurrencesAction.java

@@ -35,7 +35,6 @@ import google.registry.model.billing.BillingEvent;
 import google.registry.model.billing.BillingRecurrence;
 import google.registry.model.common.Cursor;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.Parameter;
 import google.registry.request.Response;
 import google.registry.request.auth.Auth;
@@ -51,7 +50,7 @@ import org.joda.time.DateTime;
  * BillingRecurrence} billing events into synthetic {@link BillingEvent} events.
  */
 @Action(
-    service = GaeService.BACKEND,
+    service = Action.Service.BACKEND,
     path = "/_dr/task/expandBillingRecurrences",
     auth = Auth.AUTH_ADMIN)
 public class ExpandBillingRecurrencesAction implements Runnable {

core/src/main/java/google/registry/batch/RelockDomainAction.java

@@ -32,7 +32,6 @@ import google.registry.model.eppcommon.StatusValue;
 import google.registry.model.tld.RegistryLockDao;
 import google.registry.persistence.VKey;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.Parameter;
 import google.registry.request.Response;
 import google.registry.request.auth.Auth;
@@ -47,7 +46,7 @@ import org.joda.time.Duration;
 
 /** Task that re-locks a previously-Registry-Locked domain after a predetermined period of time. */
 @Action(
-    service = GaeService.BACKEND,
+    service = Action.Service.BACKEND,
     path = RelockDomainAction.PATH,
     method = POST,
     automaticallyPrintOk = true,

core/src/main/java/google/registry/batch/RemoveAllDomainContactsAction.java

@@ -44,7 +44,6 @@ import google.registry.model.eppcommon.ProtocolDefinition;
 import google.registry.model.eppoutput.EppOutput;
 import google.registry.persistence.VKey;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.Response;
 import google.registry.request.auth.Auth;
 import google.registry.request.lock.LockHandler;
@@ -67,7 +66,7 @@ import org.joda.time.Duration;
  * leaving behind a record recording that update.
  */
 @Action(
-    service = GaeService.BACKEND,
+    service = Action.Service.BACKEND,
     path = RemoveAllDomainContactsAction.PATH,
     method = Action.Method.POST,
     auth = Auth.AUTH_ADMIN)

core/src/main/java/google/registry/batch/ResaveAllEppResourcesPipelineAction.java

@@ -28,7 +28,6 @@ import com.google.common.flogger.FluentLogger;
 import com.google.common.net.MediaType;
 import google.registry.config.RegistryConfig.Config;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.Parameter;
 import google.registry.request.Response;
 import google.registry.request.auth.Auth;
@@ -54,7 +53,7 @@ import jakarta.inject.Inject;
  * <p>This runs the {@link google.registry.beam.resave.ResaveAllEppResourcesPipeline}.
  */
 @Action(
-    service = GaeService.BACKEND,
+    service = Action.Service.BACKEND,
     path = ResaveAllEppResourcesPipelineAction.PATH,
     auth = Auth.AUTH_ADMIN)
 public class ResaveAllEppResourcesPipelineAction implements Runnable {

core/src/main/java/google/registry/batch/ResaveEntityAction.java

@@ -25,7 +25,6 @@ import com.google.common.flogger.FluentLogger;
 import google.registry.model.EppResource;
 import google.registry.persistence.VKey;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.Action.Method;
 import google.registry.request.Parameter;
 import google.registry.request.Response;
@@ -40,7 +39,7 @@ import org.joda.time.DateTime;
  * <p>{@link EppResource}s will be projected forward to the current time.
  */
 @Action(
-    service = GaeService.BACKEND,
+    service = Action.Service.BACKEND,
     path = ResaveEntityAction.PATH,
     auth = Auth.AUTH_ADMIN,
     method = Method.POST)

core/src/main/java/google/registry/batch/SendExpiringCertificateNotificationEmailAction.java

@@ -35,7 +35,6 @@ import google.registry.model.registrar.Registrar;
 import google.registry.model.registrar.RegistrarPoc;
 import google.registry.model.registrar.RegistrarPoc.Type;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.Response;
 import google.registry.request.auth.Auth;
 import google.registry.util.EmailMessage;
@@ -50,7 +49,7 @@ import org.joda.time.format.DateTimeFormatter;
 
 /** An action that sends notification emails to registrars whose certificates are expiring soon. */
 @Action(
-    service = GaeService.BACKEND,
+    service = Action.Service.BACKEND,
     path = SendExpiringCertificateNotificationEmailAction.PATH,
     auth = Auth.AUTH_ADMIN)
 public class SendExpiringCertificateNotificationEmailAction implements Runnable {

core/src/main/java/google/registry/batch/WipeOutContactHistoryPiiAction.java

@@ -30,7 +30,6 @@ import google.registry.beam.wipeout.WipeOutContactHistoryPiiPipeline;
 import google.registry.config.RegistryConfig.Config;
 import google.registry.model.contact.ContactHistory;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.Parameter;
 import google.registry.request.Response;
 import google.registry.request.auth.Auth;
@@ -49,7 +48,7 @@ import org.joda.time.DateTime;
  * time.
  */
 @Action(
-    service = GaeService.BACKEND,
+    service = Action.Service.BACKEND,
     path = WipeOutContactHistoryPiiAction.PATH,
     auth = Auth.AUTH_ADMIN)
 public class WipeOutContactHistoryPiiAction implements Runnable {

core/src/main/java/google/registry/bsa/BsaDownloadAction.java

@@ -41,7 +41,6 @@ import google.registry.bsa.persistence.DownloadScheduler;
 import google.registry.config.RegistryConfig.Config;
 import google.registry.model.tld.Tlds;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.Response;
 import google.registry.request.auth.Auth;
 import google.registry.util.Clock;
@@ -51,7 +50,7 @@ import java.util.Optional;
 import java.util.stream.Stream;
 
 @Action(
-    service = GaeService.BSA,
+    service = Action.Service.BACKEND,
     path = BsaDownloadAction.PATH,
     method = {GET, POST},
     auth = Auth.AUTH_ADMIN)

core/src/main/java/google/registry/bsa/BsaRefreshAction.java

@@ -31,7 +31,6 @@ import google.registry.bsa.persistence.RefreshScheduler;
 import google.registry.config.RegistryConfig.Config;
 import google.registry.model.tld.Tlds;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.Response;
 import google.registry.request.auth.Auth;
 import google.registry.util.BatchedStreams;
@@ -42,7 +41,7 @@ import java.util.stream.Stream;
 import org.joda.time.Duration;
 
 @Action(
-    service = GaeService.BSA,
+    service = Action.Service.BACKEND,
     path = BsaRefreshAction.PATH,
     method = {GET, POST},
     auth = Auth.AUTH_ADMIN)

core/src/main/java/google/registry/bsa/BsaValidateAction.java

@@ -53,7 +53,6 @@ import google.registry.model.domain.Domain;
 import google.registry.model.tld.Tld;
 import google.registry.model.tld.Tld.TldType;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.Response;
 import google.registry.request.auth.Auth;
 import google.registry.util.Clock;
@@ -66,7 +65,7 @@ import org.joda.time.Duration;
 
 /** Validates the BSA data in the database against the most recent block lists. */
 @Action(
-    service = GaeService.BSA,
+    service = Action.Service.BACKEND,
     path = BsaValidateAction.PATH,
     method = {GET, POST},
     auth = Auth.AUTH_ADMIN)

core/src/main/java/google/registry/bsa/UploadBsaUnavailableDomainsAction.java

@@ -42,7 +42,6 @@ import google.registry.model.tld.Tld;
 import google.registry.model.tld.Tld.TldType;
 import google.registry.model.tld.label.ReservedList;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.auth.Auth;
 import google.registry.util.Clock;
 import jakarta.inject.Inject;
@@ -78,7 +77,7 @@ import org.joda.time.DateTime;
  * <p>The file is also uploaded to GCS to preserve it as a record for ourselves.
  */
 @Action(
-    service = GaeService.BSA,
+    service = Action.Service.BACKEND,
     path = "/_dr/task/uploadBsaUnavailableNames",
     method = {GET, POST},
     auth = Auth.AUTH_ADMIN)

core/src/main/java/google/registry/config/RegistryConfig.java

@@ -37,7 +37,7 @@ import google.registry.bsa.UploadBsaUnavailableDomainsAction;
 import google.registry.dns.ReadDnsRefreshRequestsAction;
 import google.registry.model.common.DnsRefreshRequest;
 import google.registry.persistence.transaction.JpaTransactionManager;
-import google.registry.request.Action.GkeService;
+import google.registry.request.Action.Service;
 import google.registry.util.RegistryEnvironment;
 import google.registry.util.YamlUtils;
 import jakarta.inject.Named;
@@ -1444,7 +1444,7 @@ public final class RegistryConfig {
     return CONFIG_SETTINGS.get().gcpProject.baseDomain;
   }
 
-  public static URL getServiceUrl(GkeService service) {
+  public static URL getServiceUrl(Service service) {
     return makeUrl(String.format("https://%s.%s", service.getServiceId(), getBaseDomain()));
   }
 

core/src/main/java/google/registry/cron/TldFanoutAction.java

@@ -40,14 +40,12 @@ import com.google.common.collect.Streams;
 import com.google.common.flogger.FluentLogger;
 import google.registry.batch.CloudTasksUtils;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
-import google.registry.request.Action.GkeService;
+import google.registry.request.Action.Service;
 import google.registry.request.Parameter;
 import google.registry.request.ParameterMap;
 import google.registry.request.RequestParameters;
 import google.registry.request.Response;
 import google.registry.request.auth.Auth;
-import google.registry.util.RegistryEnvironment;
 import jakarta.inject.Inject;
 import java.util.Optional;
 import java.util.stream.Stream;
@@ -80,7 +78,7 @@ import java.util.stream.Stream;
  * </ul>
  */
 @Action(
-    service = GaeService.BACKEND,
+    service = Service.BACKEND,
     path = "/_dr/cron/fanout",
     automaticallyPrintOk = true,
     auth = Auth.AUTH_ADMIN)
@@ -160,10 +158,6 @@ public final class TldFanoutAction implements Runnable {
       params.put(RequestParameters.PARAM_TLD, tld);
     }
     return cloudTasksUtils.createTaskWithJitter(
-        endpoint,
-        Action.Method.POST,
-        RegistryEnvironment.isOnJetty() ? GkeService.BACKEND : GaeService.BACKEND,
-        params,
-        jitterSeconds);
+        endpoint, Action.Method.POST, Service.BACKEND, params, jitterSeconds);
   }
 }

core/src/main/java/google/registry/dns/PublishDnsUpdatesAction.java

@@ -52,7 +52,6 @@ import google.registry.model.registrar.Registrar;
 import google.registry.model.registrar.RegistrarPoc;
 import google.registry.model.tld.Tld;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.Header;
 import google.registry.request.HttpException.ServiceUnavailableException;
 import google.registry.request.Parameter;
@@ -72,7 +71,7 @@ import org.joda.time.Duration;
 
 /** Task that sends domain and host updates to the DNS server. */
 @Action(
-    service = GaeService.BACKEND,
+    service = Action.Service.BACKEND,
     path = PublishDnsUpdatesAction.PATH,
     method = POST,
     automaticallyPrintOk = true,

core/src/main/java/google/registry/dns/ReadDnsRefreshRequestsAction.java

@@ -45,7 +45,6 @@ import google.registry.dns.DnsUtils.TargetType;
 import google.registry.model.common.DnsRefreshRequest;
 import google.registry.model.tld.Tld;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.Parameter;
 import google.registry.request.auth.Auth;
 import google.registry.util.Clock;
@@ -60,7 +59,7 @@ import org.joda.time.Duration;
  * table.
  */
 @Action(
-    service = GaeService.BACKEND,
+    service = Action.Service.BACKEND,
     path = "/_dr/task/readDnsRefreshRequests",
     automaticallyPrintOk = true,
     method = POST,

core/src/main/java/google/registry/dns/RefreshDnsAction.java

@@ -26,7 +26,6 @@ import google.registry.model.annotations.ExternalMessagingName;
 import google.registry.model.domain.Domain;
 import google.registry.model.host.Host;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.HttpException.BadRequestException;
 import google.registry.request.HttpException.NotFoundException;
 import google.registry.request.Parameter;
@@ -36,7 +35,7 @@ import jakarta.inject.Inject;
 
 /** Action that manually triggers refresh of DNS information. */
 @Action(
-    service = GaeService.BACKEND,
+    service = Action.Service.BACKEND,
     path = "/_dr/task/dnsRefresh",
     automaticallyPrintOk = true,
     auth = Auth.AUTH_ADMIN)

core/src/main/java/google/registry/dns/RefreshDnsOnHostRenameAction.java

@@ -26,7 +26,6 @@ import google.registry.model.domain.Domain;
 import google.registry.model.host.Host;
 import google.registry.persistence.VKey;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.Parameter;
 import google.registry.request.Response;
 import google.registry.request.auth.Auth;
@@ -34,7 +33,7 @@ import jakarta.inject.Inject;
 import org.joda.time.DateTime;
 
 @Action(
-    service = GaeService.BACKEND,
+    service = Action.Service.BACKEND,
     path = PATH,
     method = Action.Method.POST,
     auth = Auth.AUTH_ADMIN)

core/src/main/java/google/registry/export/ExportDomainListsAction.java

@@ -36,7 +36,6 @@ import google.registry.model.eppcommon.StatusValue;
 import google.registry.model.tld.Tld;
 import google.registry.model.tld.Tld.TldType;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.auth.Auth;
 import google.registry.storage.drive.DriveConnection;
 import google.registry.util.Clock;
@@ -58,7 +57,7 @@ import org.joda.time.DateTimeZone;
  * name TLD.txt into the domain-lists bucket. Note that this overwrites the files in place.
  */
 @Action(
-    service = GaeService.BACKEND,
+    service = Action.Service.BACKEND,
     path = "/_dr/task/exportDomainLists",
     method = POST,
     auth = Auth.AUTH_ADMIN)

core/src/main/java/google/registry/export/ExportPremiumTermsAction.java

@@ -33,7 +33,6 @@ import google.registry.model.tld.Tld;
 import google.registry.model.tld.label.PremiumList.PremiumEntry;
 import google.registry.model.tld.label.PremiumListDao;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.Parameter;
 import google.registry.request.RequestParameters;
 import google.registry.request.Response;
@@ -46,7 +45,7 @@ import java.util.SortedSet;
 
 /** Action that exports the premium terms list for a TLD to Google Drive. */
 @Action(
-    service = GaeService.BACKEND,
+    service = Action.Service.BACKEND,
     path = "/_dr/task/exportPremiumTerms",
     method = POST,
     auth = Auth.AUTH_ADMIN)

core/src/main/java/google/registry/export/ExportReservedTermsAction.java

@@ -25,7 +25,6 @@ import com.google.common.flogger.FluentLogger;
 import com.google.common.net.MediaType;
 import google.registry.model.tld.Tld;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.Parameter;
 import google.registry.request.RequestParameters;
 import google.registry.request.Response;
@@ -35,7 +34,7 @@ import jakarta.inject.Inject;
 
 /** Action that exports the publicly viewable reserved terms list for a TLD to Google Drive. */
 @Action(
-    service = GaeService.BACKEND,
+    service = Action.Service.BACKEND,
     path = "/_dr/task/exportReservedTerms",
     method = POST,
     auth = Auth.AUTH_ADMIN)

core/src/main/java/google/registry/export/SyncGroupMembersAction.java

@@ -34,7 +34,6 @@ import google.registry.groups.GroupsConnection.Role;
 import google.registry.model.registrar.Registrar;
 import google.registry.model.registrar.RegistrarPoc;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.Response;
 import google.registry.request.auth.Auth;
 import google.registry.util.Retrier;
@@ -53,7 +52,7 @@ import javax.annotation.Nullable;
  * <p>This uses the <a href="https://developers.google.com/admin-sdk/directory/">Directory API</a>.
  */
 @Action(
-    service = GaeService.BACKEND,
+    service = Action.Service.BACKEND,
     path = "/_dr/task/syncGroupMembers",
     method = POST,
     auth = Auth.AUTH_ADMIN)

core/src/main/java/google/registry/export/sheet/SyncRegistrarsSheetAction.java

@@ -24,7 +24,6 @@ import static jakarta.servlet.http.HttpServletResponse.SC_OK;
 import com.google.common.flogger.FluentLogger;
 import google.registry.config.RegistryConfig.Config;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.Parameter;
 import google.registry.request.Response;
 import google.registry.request.auth.Auth;
@@ -55,7 +54,7 @@ import org.joda.time.Duration;
  * @see SyncRegistrarsSheet
  */
 @Action(
-    service = GaeService.BACKEND,
+    service = Action.Service.BACKEND,
     path = SyncRegistrarsSheetAction.PATH,
     method = POST,
     auth = Auth.AUTH_ADMIN)

core/src/main/java/google/registry/flows/CheckApiAction.java

@@ -54,7 +54,6 @@ import google.registry.model.tld.label.ReservationType;
 import google.registry.monitoring.whitebox.CheckApiMetric;
 import google.registry.monitoring.whitebox.CheckApiMetric.Availability;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.Parameter;
 import google.registry.request.RequestParameters;
 import google.registry.request.Response;
@@ -72,7 +71,7 @@ import org.joda.time.DateTime;
  * user controlled, lest it open an XSS vector. Do not modify this to return the domain name in the
  * response.
  */
-@Action(service = GaeService.PUBAPI, path = "/check", auth = Auth.AUTH_PUBLIC)
+@Action(service = Action.Service.PUBAPI, path = "/check", auth = Auth.AUTH_PUBLIC)
 public class CheckApiAction implements Runnable {
 
   private static final FluentLogger logger = FluentLogger.forEnclosingClass();

core/src/main/java/google/registry/flows/EppTlsAction.java

@@ -15,7 +15,6 @@
 package google.registry.flows;
 
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.Action.Method;
 import google.registry.request.Payload;
 import google.registry.request.auth.Auth;
@@ -27,7 +26,7 @@ import jakarta.servlet.http.HttpServletRequest;
  * to RFC 5730. Commands must be requested via POST.
  */
 @Action(
-    service = GaeService.DEFAULT,
+    service = Action.Service.FRONTEND,
     path = "/_dr/epp",
     method = Method.POST,
     auth = Auth.AUTH_ADMIN)

core/src/main/java/google/registry/flows/EppToolAction.java

@@ -22,7 +22,6 @@ import dagger.Module;
 import dagger.Provides;
 import google.registry.model.eppcommon.ProtocolDefinition;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.Action.Method;
 import google.registry.request.Parameter;
 import google.registry.request.auth.Auth;
@@ -31,7 +30,7 @@ import jakarta.servlet.http.HttpServletRequest;
 
 /** Runs EPP commands directly without logging in, verifying an XSRF token from the tool. */
 @Action(
-    service = GaeService.TOOLS,
+    service = Action.Service.BACKEND,
     path = EppToolAction.PATH,
     method = Method.POST,
     auth = Auth.AUTH_ADMIN)

core/src/main/java/google/registry/flows/session/LoginFlow.java

@@ -47,6 +47,7 @@ import google.registry.model.eppinput.EppInput.Options;
 import google.registry.model.eppinput.EppInput.Services;
 import google.registry.model.eppoutput.EppResponse;
 import google.registry.model.registrar.Registrar;
+import google.registry.util.PasswordUtils;
 import google.registry.util.StopwatchLogger;
 import jakarta.inject.Inject;
 import java.util.Optional;
@@ -150,8 +151,19 @@ public class LoginFlow implements MutatingFlow {
       throw new RegistrarAccountNotActiveException();
     }
 
-    if (login.getNewPassword().isPresent()) {
-      String newPassword = login.getNewPassword().get();
+    // TODO(b/458423787): Remove this circa March 2026 after enough time has passed for the logins
+    // to have transitioned to Argon2 hashing.
+    if (login.getNewPassword().isPresent()
+        || registrar.get().getCurrentHashAlgorithm(login.getPassword()).orElse(null)
+            != PasswordUtils.HashAlgorithm.ARGON_2_ID) {
+      String newPassword =
+          login
+              .getNewPassword()
+              .orElseGet(
+                  () -> {
+                    logger.atInfo().log("Rehashing existing registrar password with ARGON_2_ID");
+                    return login.getPassword();
+                  });
       // Load fresh from database (bypassing the cache) to ensure we don't save stale data.
       Optional<Registrar> freshRegistrar = Registrar.loadByRegistrarId(login.getClientId());
       stopwatch.tick("LoginFlow reload freshRegistrar");

core/src/main/java/google/registry/loadtest/LoadTestAction.java

@@ -28,7 +28,6 @@ import com.google.protobuf.Timestamp;
 import google.registry.batch.CloudTasksUtils;
 import google.registry.flows.EppToolAction;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.Parameter;
 import google.registry.request.auth.Auth;
 import google.registry.util.Clock;
@@ -52,7 +51,7 @@ import org.joda.time.DateTime;
  * least one must be specified in order for load testing to do anything.
  */
 @Action(
-    service = GaeService.TOOLS,
+    service = Action.Service.BACKEND,
     path = LoadTestAction.PATH,
     method = Action.Method.POST,
     automaticallyPrintOk = true,

core/src/main/java/google/registry/model/console/User.java

@@ -37,6 +37,7 @@ import google.registry.tools.IamClient;
 import google.registry.tools.ServiceConnection;
 import google.registry.tools.server.UpdateUserGroupAction;
 import google.registry.util.PasswordUtils;
+import google.registry.util.PasswordUtils.HashAlgorithm;
 import google.registry.util.RegistryEnvironment;
 import jakarta.persistence.Column;
 import jakarta.persistence.Embeddable;
@@ -229,6 +230,10 @@ public class User extends UpdateAutoTimestampEntity implements Buildable {
         || isNullOrEmpty(registryLockPasswordHash)) {
       return false;
     }
+    return getCurrentHashAlgorithm(registryLockPassword).isPresent();
+  }
+
+  public Optional<HashAlgorithm> getCurrentHashAlgorithm(String registryLockPassword) {
     return PasswordUtils.verifyPassword(
         registryLockPassword, registryLockPasswordHash, registryLockPasswordSalt);
   }

core/src/main/java/google/registry/model/eppcommon/ProtocolDefinition.java

@@ -56,7 +56,7 @@ public class ProtocolDefinition {
     FEE_0_6(FeeCheckCommandExtensionV06.class, FeeCheckResponseExtensionV06.class, true),
     FEE_0_11(FeeCheckCommandExtensionV11.class, FeeCheckResponseExtensionV11.class, true),
     FEE_0_12(FeeCheckCommandExtensionV12.class, FeeCheckResponseExtensionV12.class, true),
-    FEE_1_00(FeeCheckCommandExtensionStdV1.class, FeeCheckResponseExtensionStdV1.class, true),
+    FEE_1_00(FeeCheckCommandExtensionStdV1.class, FeeCheckResponseExtensionStdV1.class, false),
     METADATA_1_0(MetadataExtension.class, null, false);
 
     private final Class<? extends CommandExtension> commandExtensionClass;

core/src/main/java/google/registry/model/registrar/Registrar.java

@@ -67,6 +67,7 @@ import google.registry.persistence.converter.CurrencyToStringMapUserType;
 import google.registry.persistence.transaction.TransactionManager;
 import google.registry.util.CidrAddressBlock;
 import google.registry.util.PasswordUtils;
+import google.registry.util.PasswordUtils.HashAlgorithm;
 import jakarta.mail.internet.AddressException;
 import jakarta.mail.internet.InternetAddress;
 import jakarta.persistence.AttributeOverride;
@@ -672,6 +673,10 @@ public class Registrar extends UpdateAutoTimestampEntity implements Buildable, J
   }
 
   public boolean verifyPassword(String password) {
+    return getCurrentHashAlgorithm(password).isPresent();
+  }
+
+  public Optional<HashAlgorithm> getCurrentHashAlgorithm(String password) {
     return PasswordUtils.verifyPassword(password, passwordHash, salt);
   }
 

core/src/main/java/google/registry/module/ReadinessProbeAction.java

@@ -19,8 +19,7 @@ import static jakarta.servlet.http.HttpServletResponse.SC_OK;
 
 import com.google.common.flogger.FluentLogger;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
-import google.registry.request.Action.GkeService;
+import google.registry.request.Action.Service;
 import google.registry.request.auth.Auth;
 import jakarta.inject.Inject;
 import jakarta.servlet.http.HttpServletResponse;
@@ -53,8 +52,7 @@ public class ReadinessProbeAction implements Runnable {
   }
 
   @Action(
-      service = GaeService.DEFAULT,
-      gkeService = GkeService.CONSOLE,
+      service = Service.CONSOLE,
       path = ReadinessProbeConsoleAction.PATH,
       auth = Auth.AUTH_PUBLIC)
   public static class ReadinessProbeConsoleAction extends ReadinessProbeAction {
@@ -66,11 +64,7 @@ public class ReadinessProbeAction implements Runnable {
     }
   }
 
-  @Action(
-      service = GaeService.PUBAPI,
-      gkeService = GkeService.PUBAPI,
-      path = ReadinessProbeActionPubApi.PATH,
-      auth = Auth.AUTH_PUBLIC)
+  @Action(service = Service.PUBAPI, path = ReadinessProbeActionPubApi.PATH, auth = Auth.AUTH_PUBLIC)
   public static class ReadinessProbeActionPubApi extends ReadinessProbeAction {
     public static final String PATH = "/ready/pubapi";
 
@@ -81,8 +75,7 @@ public class ReadinessProbeAction implements Runnable {
   }
 
   @Action(
-      service = GaeService.DEFAULT,
-      gkeService = GkeService.FRONTEND,
+      service = Service.FRONTEND,
       path = ReadinessProbeActionFrontend.PATH,
       auth = Auth.AUTH_PUBLIC)
   public static final class ReadinessProbeActionFrontend extends ReadinessProbeAction {

core/src/main/java/google/registry/module/backend/BackendRequestComponent.java

@@ -1,193 +0,0 @@
-// Copyright 2017 The Nomulus 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.module.backend;
-
-import dagger.Module;
-import dagger.Subcomponent;
-import google.registry.batch.BatchModule;
-import google.registry.batch.CannedScriptExecutionAction;
-import google.registry.batch.DeleteExpiredDomainsAction;
-import google.registry.batch.DeleteLoadTestDataAction;
-import google.registry.batch.DeleteProberDataAction;
-import google.registry.batch.ExpandBillingRecurrencesAction;
-import google.registry.batch.RelockDomainAction;
-import google.registry.batch.RemoveAllDomainContactsAction;
-import google.registry.batch.ResaveAllEppResourcesPipelineAction;
-import google.registry.batch.ResaveEntityAction;
-import google.registry.batch.SendExpiringCertificateNotificationEmailAction;
-import google.registry.batch.WipeOutContactHistoryPiiAction;
-import google.registry.cron.CronModule;
-import google.registry.cron.TldFanoutAction;
-import google.registry.dns.DnsModule;
-import google.registry.dns.PublishDnsUpdatesAction;
-import google.registry.dns.ReadDnsRefreshRequestsAction;
-import google.registry.dns.RefreshDnsAction;
-import google.registry.dns.RefreshDnsOnHostRenameAction;
-import google.registry.dns.writer.DnsWritersModule;
-import google.registry.dns.writer.dnsupdate.DnsUpdateConfigModule;
-import google.registry.export.ExportDomainListsAction;
-import google.registry.export.ExportPremiumTermsAction;
-import google.registry.export.ExportReservedTermsAction;
-import google.registry.export.SyncGroupMembersAction;
-import google.registry.export.sheet.SheetModule;
-import google.registry.export.sheet.SyncRegistrarsSheetAction;
-import google.registry.flows.FlowComponent;
-import google.registry.flows.custom.CustomLogicModule;
-import google.registry.monitoring.whitebox.WhiteboxModule;
-import google.registry.rdap.UpdateRegistrarRdapBaseUrlsAction;
-import google.registry.rde.BrdaCopyAction;
-import google.registry.rde.RdeModule;
-import google.registry.rde.RdeReportAction;
-import google.registry.rde.RdeReporter;
-import google.registry.rde.RdeStagingAction;
-import google.registry.rde.RdeUploadAction;
-import google.registry.reporting.ReportingModule;
-import google.registry.reporting.billing.BillingModule;
-import google.registry.reporting.billing.CopyDetailReportsAction;
-import google.registry.reporting.billing.GenerateInvoicesAction;
-import google.registry.reporting.billing.PublishInvoicesAction;
-import google.registry.reporting.icann.DnsCountQueryCoordinator.DnsCountQueryCoordinatorModule;
-import google.registry.reporting.icann.IcannReportingModule;
-import google.registry.reporting.icann.IcannReportingStagingAction;
-import google.registry.reporting.icann.IcannReportingUploadAction;
-import google.registry.reporting.spec11.GenerateSpec11ReportAction;
-import google.registry.reporting.spec11.PublishSpec11ReportAction;
-import google.registry.reporting.spec11.Spec11Module;
-import google.registry.request.RequestComponentBuilder;
-import google.registry.request.RequestModule;
-import google.registry.request.RequestScope;
-import google.registry.tmch.NordnUploadAction;
-import google.registry.tmch.NordnVerifyAction;
-import google.registry.tmch.TmchCrlAction;
-import google.registry.tmch.TmchDnlAction;
-import google.registry.tmch.TmchModule;
-import google.registry.tmch.TmchSmdrlAction;
-
-/** Dagger component with per-request lifetime for "backend" App Engine module. */
-@RequestScope
-@Subcomponent(
-    modules = {
-      BatchModule.class,
-      BillingModule.class,
-      CronModule.class,
-      CustomLogicModule.class,
-      DnsCountQueryCoordinatorModule.class,
-      DnsModule.class,
-      DnsUpdateConfigModule.class,
-      DnsWritersModule.class,
-      IcannReportingModule.class,
-      RdeModule.class,
-      ReportingModule.class,
-      RequestModule.class,
-      SheetModule.class,
-      Spec11Module.class,
-      TmchModule.class,
-      WhiteboxModule.class,
-    })
-public interface BackendRequestComponent {
-
-  BrdaCopyAction brdaCopyAction();
-
-  CannedScriptExecutionAction cannedScriptExecutionAction();
-
-  CopyDetailReportsAction copyDetailReportAction();
-
-  DeleteExpiredDomainsAction deleteExpiredDomainsAction();
-
-  DeleteLoadTestDataAction deleteLoadTestDataAction();
-
-  DeleteProberDataAction deleteProberDataAction();
-
-  ExpandBillingRecurrencesAction expandBillingRecurrencesAction();
-
-  ExportDomainListsAction exportDomainListsAction();
-
-  ExportPremiumTermsAction exportPremiumTermsAction();
-
-  ExportReservedTermsAction exportReservedTermsAction();
-
-  FlowComponent.Builder flowComponentBuilder();
-
-  GenerateInvoicesAction generateInvoicesAction();
-
-  GenerateSpec11ReportAction generateSpec11ReportAction();
-
-  IcannReportingStagingAction icannReportingStagingAction();
-
-  IcannReportingUploadAction icannReportingUploadAction();
-
-  NordnUploadAction nordnUploadAction();
-
-  NordnVerifyAction nordnVerifyAction();
-
-  PublishDnsUpdatesAction publishDnsUpdatesAction();
-
-  PublishInvoicesAction uploadInvoicesAction();
-
-  PublishSpec11ReportAction publishSpec11ReportAction();
-
-  ReadDnsRefreshRequestsAction readDnsRefreshRequestsAction();
-
-  RdeReportAction rdeReportAction();
-
-  RdeStagingAction rdeStagingAction();
-
-  RdeUploadAction rdeUploadAction();
-
-  RdeReporter rdeReporter();
-
-  RefreshDnsAction refreshDnsAction();
-
-  RefreshDnsOnHostRenameAction refreshDnsOnHostRenameAction();
-
-  RelockDomainAction relockDomainAction();
-
-  RemoveAllDomainContactsAction removeAllDomainContactsAction();
-
-  ResaveAllEppResourcesPipelineAction resaveAllEppResourcesPipelineAction();
-
-  ResaveEntityAction resaveEntityAction();
-
-  SendExpiringCertificateNotificationEmailAction sendExpiringCertificateNotificationEmailAction();
-
-  SyncGroupMembersAction syncGroupMembersAction();
-
-  SyncRegistrarsSheetAction syncRegistrarsSheetAction();
-
-  TldFanoutAction tldFanoutAction();
-
-  TmchCrlAction tmchCrlAction();
-
-  TmchDnlAction tmchDnlAction();
-
-  TmchSmdrlAction tmchSmdrlAction();
-
-  UpdateRegistrarRdapBaseUrlsAction updateRegistrarRdapBaseUrlsAction();
-
-  WipeOutContactHistoryPiiAction wipeOutContactHistoryPiiAction();
-
-  @Subcomponent.Builder
-  abstract class Builder implements RequestComponentBuilder<BackendRequestComponent> {
-
-    @Override
-    public abstract Builder requestModule(RequestModule requestModule);
-
-    @Override
-    public abstract BackendRequestComponent build();
-  }
-
-  @Module(subcomponents = BackendRequestComponent.class)
-  class BackendRequestComponentModule {}
-}

core/src/main/java/google/registry/module/backend/BackendServlet.java

@@ -1,31 +0,0 @@
-// Copyright 2017 The Nomulus 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.module.backend;
-
-import com.google.monitoring.metrics.MetricReporter;
-import dagger.Lazy;
-import google.registry.module.ServletBase;
-
-/** Servlet that should handle all requests to our "backend" App Engine module. */
-public final class BackendServlet extends ServletBase {
-
-  private static final BackendComponent component = DaggerBackendComponent.create();
-  private static final BackendRequestHandler requestHandler = component.requestHandler();
-  private static final Lazy<MetricReporter> metricReporter = component.metricReporter();
-
-  public BackendServlet() {
-    super(requestHandler, metricReporter);
-  }
-}

core/src/main/java/google/registry/module/backend/package-info.java

@@ -1,16 +0,0 @@
-// Copyright 2017 The Nomulus 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.
-
-@javax.annotation.ParametersAreNonnullByDefault
-package google.registry.module.backend;

core/src/main/java/google/registry/module/frontend/FrontendComponent.java

@@ -1,70 +0,0 @@
-// Copyright 2017 The Nomulus 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.module.frontend;
-
-import com.google.monitoring.metrics.MetricReporter;
-import dagger.Component;
-import dagger.Lazy;
-import google.registry.config.CloudTasksUtilsModule;
-import google.registry.config.CredentialModule;
-import google.registry.config.RegistryConfig.ConfigModule;
-import google.registry.flows.ServerTridProviderModule;
-import google.registry.flows.custom.CustomLogicFactoryModule;
-import google.registry.flows.domain.DomainDeletionTimeCacheModule;
-import google.registry.groups.DirectoryModule;
-import google.registry.groups.GmailModule;
-import google.registry.groups.GroupsModule;
-import google.registry.groups.GroupssettingsModule;
-import google.registry.keyring.KeyringModule;
-import google.registry.keyring.api.KeyModule;
-import google.registry.module.frontend.FrontendRequestComponent.FrontendRequestComponentModule;
-import google.registry.monitoring.whitebox.StackdriverModule;
-import google.registry.privileges.secretmanager.SecretManagerModule;
-import google.registry.request.Modules.GsonModule;
-import google.registry.request.Modules.NetHttpTransportModule;
-import google.registry.request.auth.AuthModule;
-import google.registry.util.UtilsModule;
-import jakarta.inject.Singleton;
-
-/** Dagger component with instance lifetime for "default" App Engine module. */
-@Singleton
-@Component(
-    modules = {
-      AuthModule.class,
-      CloudTasksUtilsModule.class,
-      ConfigModule.class,
-      CredentialModule.class,
-      CustomLogicFactoryModule.class,
-      CloudTasksUtilsModule.class,
-      DirectoryModule.class,
-      DomainDeletionTimeCacheModule.class,
-      FrontendRequestComponentModule.class,
-      GmailModule.class,
-      GroupsModule.class,
-      GroupssettingsModule.class,
-      GsonModule.class,
-      KeyModule.class,
-      KeyringModule.class,
-      NetHttpTransportModule.class,
-      SecretManagerModule.class,
-      ServerTridProviderModule.class,
-      StackdriverModule.class,
-      UtilsModule.class
-    })
-interface FrontendComponent {
-  FrontendRequestHandler requestHandler();
-
-  Lazy<MetricReporter> metricReporter();
-}

core/src/main/java/google/registry/module/frontend/FrontendRequestComponent.java

@@ -1,111 +0,0 @@
-// Copyright 2017 The Nomulus 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.module.frontend;
-
-import dagger.Module;
-import dagger.Subcomponent;
-import google.registry.batch.BatchModule;
-import google.registry.dns.DnsModule;
-import google.registry.flows.EppTlsAction;
-import google.registry.flows.FlowComponent;
-import google.registry.flows.TlsCredentials.EppTlsModule;
-import google.registry.module.ReadinessProbeAction.ReadinessProbeActionFrontend;
-import google.registry.module.ReadinessProbeAction.ReadinessProbeConsoleAction;
-import google.registry.monitoring.whitebox.WhiteboxModule;
-import google.registry.request.RequestComponentBuilder;
-import google.registry.request.RequestModule;
-import google.registry.request.RequestScope;
-import google.registry.ui.server.console.ConsoleDomainGetAction;
-import google.registry.ui.server.console.ConsoleDomainListAction;
-import google.registry.ui.server.console.ConsoleDumDownloadAction;
-import google.registry.ui.server.console.ConsoleEppPasswordAction;
-import google.registry.ui.server.console.ConsoleModule;
-import google.registry.ui.server.console.ConsoleOteAction;
-import google.registry.ui.server.console.ConsoleRegistryLockAction;
-import google.registry.ui.server.console.ConsoleRegistryLockVerifyAction;
-import google.registry.ui.server.console.ConsoleUpdateRegistrarAction;
-import google.registry.ui.server.console.ConsoleUserDataAction;
-import google.registry.ui.server.console.ConsoleUsersAction;
-import google.registry.ui.server.console.PasswordResetRequestAction;
-import google.registry.ui.server.console.PasswordResetVerifyAction;
-import google.registry.ui.server.console.RegistrarsAction;
-import google.registry.ui.server.console.domains.ConsoleBulkDomainAction;
-import google.registry.ui.server.console.settings.ContactAction;
-import google.registry.ui.server.console.settings.RdapRegistrarFieldsAction;
-import google.registry.ui.server.console.settings.SecurityAction;
-
-/** Dagger component with per-request lifetime for "default" App Engine module. */
-@RequestScope
-@Subcomponent(
-    modules = {
-      BatchModule.class,
-      DnsModule.class,
-      EppTlsModule.class,
-      ConsoleModule.class,
-      RequestModule.class,
-      WhiteboxModule.class,
-    })
-public interface FrontendRequestComponent {
-  ConsoleBulkDomainAction consoleBulkDomainAction();
-
-  ConsoleDomainGetAction consoleDomainGetAction();
-
-  ConsoleDomainListAction consoleDomainListAction();
-
-  ConsoleEppPasswordAction consoleEppPasswordAction();
-
-  ConsoleOteAction consoleOteAction();
-
-  ConsoleRegistryLockAction consoleRegistryLockAction();
-
-  ConsoleRegistryLockVerifyAction consoleRegistryLockVerifyAction();
-
-  ConsoleUpdateRegistrarAction consoleUpdateRegistrarAction();
-
-  ConsoleUserDataAction consoleUserDataAction();
-
-  ConsoleUsersAction consoleUsersAction();
-
-  ConsoleDumDownloadAction consoleDumDownloadAction();
-
-  ContactAction contactAction();
-
-  EppTlsAction eppTlsAction();
-
-  FlowComponent.Builder flowComponentBuilder();
-
-  PasswordResetRequestAction passwordResetRequestAction();
-
-  PasswordResetVerifyAction passwordResetVerifyAction();
-
-  RdapRegistrarFieldsAction rdapRegistrarFieldsAction();
-
-  ReadinessProbeActionFrontend readinessProbeActionFrontend();
-
-  ReadinessProbeConsoleAction readinessProbeConsoleAction();
-
-  RegistrarsAction registrarsAction();
-
-  SecurityAction securityAction();
-
-  @Subcomponent.Builder
-  abstract class Builder implements RequestComponentBuilder<FrontendRequestComponent> {
-    @Override public abstract Builder requestModule(RequestModule requestModule);
-    @Override public abstract FrontendRequestComponent build();
-  }
-
-  @Module(subcomponents = FrontendRequestComponent.class)
-  class FrontendRequestComponentModule {}
-}

core/src/main/java/google/registry/module/frontend/FrontendRequestHandler.java

@@ -1,30 +0,0 @@
-// Copyright 2017 The Nomulus 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.module.frontend;
-
-import google.registry.request.RequestHandler;
-import google.registry.request.auth.RequestAuthenticator;
-import jakarta.inject.Inject;
-import jakarta.inject.Provider;
-
-/** Request handler for the frontend module. */
-public class FrontendRequestHandler extends RequestHandler<FrontendRequestComponent> {
-
-  @Inject FrontendRequestHandler(
-      Provider<FrontendRequestComponent.Builder> componentBuilderProvider,
-      RequestAuthenticator requestAuthenticator) {
-    super(componentBuilderProvider, requestAuthenticator);
-  }
-}

core/src/main/java/google/registry/module/frontend/FrontendServlet.java

@@ -1,31 +0,0 @@
-// Copyright 2017 The Nomulus 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.module.frontend;
-
-import com.google.monitoring.metrics.MetricReporter;
-import dagger.Lazy;
-import google.registry.module.ServletBase;
-
-/** Servlet that should handle all requests to our "default" App Engine module. */
-public final class FrontendServlet extends ServletBase {
-
-  private static final FrontendComponent component = DaggerFrontendComponent.create();
-  private static final FrontendRequestHandler requestHandler = component.requestHandler();
-  private static final Lazy<MetricReporter> metricReporter = component.metricReporter();
-
-  public FrontendServlet() {
-    super(requestHandler, metricReporter);
-  }
-}

core/src/main/java/google/registry/module/frontend/package-info.java

@@ -1,16 +0,0 @@
-// Copyright 2017 The Nomulus 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.
-
-@javax.annotation.ParametersAreNonnullByDefault
-package google.registry.module.frontend;

core/src/main/java/google/registry/monitoring/whitebox/StackdriverModule.java

@@ -16,7 +16,6 @@ package google.registry.monitoring.whitebox;
 
 import com.google.api.services.monitoring.v3.Monitoring;
 import com.google.api.services.monitoring.v3.model.MonitoredResource;
-import com.google.common.collect.ImmutableMap;
 import com.google.common.util.concurrent.ThreadFactoryBuilder;
 import com.google.monitoring.metrics.MetricReporter;
 import com.google.monitoring.metrics.MetricWriter;
@@ -29,7 +28,6 @@ import google.registry.config.RegistryConfig.Config;
 import google.registry.util.Clock;
 import google.registry.util.GoogleCredentialsBundle;
 import google.registry.util.MetricParameters;
-import google.registry.util.RegistryEnvironment;
 import jakarta.inject.Named;
 import jakarta.inject.Singleton;
 import org.joda.time.Duration;
@@ -40,13 +38,9 @@ public final class StackdriverModule {
 
   private StackdriverModule() {}
 
-  // We need a fake GCE zone to appease Stackdriver's resource model.
-  // TODO(b/265973059): Switch to resource type "gke_container".
-  private static final String SPOOFED_GCE_ZONE = "us-central1-f";
-
-  // We cannot use a static fake intance ID which is shared by all instances, because metrics might
-  // be flushed to stackdriver with delays, which lead to time inversion erros when another instance
-  // has already written a data point at a later time.
+  // We cannot use a static fake instance ID which is shared by all instances, because metrics might
+  // be flushed to stackdriver with delays, which lead to time inversion errors when another
+  // instance has already written a data point at a later time.
   @Singleton
   @Provides
   @Named("spoofedGceInstanceId")
@@ -72,23 +66,11 @@ public final class StackdriverModule {
       Lazy<MetricParameters> gkeParameters,
       @Config("projectId") String projectId,
       @Config("stackdriverMaxQps") int maxQps,
-      @Config("stackdriverMaxPointsPerRequest") int maxPointsPerRequest,
-      @Named("spoofedGceInstanceId") String instanceId) {
+      @Config("stackdriverMaxPointsPerRequest") int maxPointsPerRequest) {
     MonitoredResource resource =
-        RegistryEnvironment.isOnJetty()
-            ? new MonitoredResource()
-                .setType("gke_container")
-                .setLabels(gkeParameters.get().makeLabelsMap())
-            :
-            // The MonitoredResource for GAE apps is not writable (and missing fields anyway) so we
-            // just use the gce_instance resource type instead.
-            new MonitoredResource()
-                .setType("gce_instance")
-                .setLabels(
-                    ImmutableMap.of(
-                        // The "zone" field MUST be a valid GCE zone, so we fake one.
-                        "zone", SPOOFED_GCE_ZONE, "instance_id", instanceId));
-
+        new MonitoredResource()
+            .setType("gke_container")
+            .setLabels(gkeParameters.get().makeLabelsMap());
     return new StackdriverWriter(
         monitoringClient, projectId, resource, maxQps, maxPointsPerRequest);
   }

core/src/main/java/google/registry/rdap/RdapAutnumAction.java

@@ -20,7 +20,6 @@ import static google.registry.request.Action.Method.HEAD;
 import google.registry.rdap.RdapMetrics.EndpointType;
 import google.registry.rdap.RdapObjectClasses.ReplyPayloadBase;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.HttpException.NotImplementedException;
 import google.registry.request.auth.Auth;
 import jakarta.inject.Inject;
@@ -32,7 +31,7 @@ import jakarta.inject.Inject;
  * ARIN, not domain registries.
  */
 @Action(
-    service = GaeService.PUBAPI,
+    service = Action.Service.PUBAPI,
     path = "/rdap/autnum/",
     method = {GET, HEAD},
     isPrefix = true,

core/src/main/java/google/registry/rdap/RdapDomainAction.java

@@ -29,7 +29,6 @@ import google.registry.rdap.RdapJsonFormatter.OutputDataType;
 import google.registry.rdap.RdapMetrics.EndpointType;
 import google.registry.rdap.RdapObjectClasses.RdapDomain;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.HttpException.BadRequestException;
 import google.registry.request.HttpException.NotFoundException;
 import google.registry.request.auth.Auth;
@@ -38,7 +37,7 @@ import java.util.Optional;
 
 /** RDAP action for domain requests. */
 @Action(
-    service = GaeService.PUBAPI,
+    service = Action.Service.PUBAPI,
     path = "/rdap/domain/",
     method = {GET, HEAD},
     isPrefix = true,

core/src/main/java/google/registry/rdap/RdapDomainSearchAction.java

@@ -42,7 +42,6 @@ import google.registry.rdap.RdapMetrics.WildcardType;
 import google.registry.rdap.RdapSearchResults.DomainSearchResponse;
 import google.registry.rdap.RdapSearchResults.IncompletenessWarningType;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.HttpException.BadRequestException;
 import google.registry.request.HttpException.NotFoundException;
 import google.registry.request.HttpException.UnprocessableEntityException;
@@ -71,7 +70,7 @@ import org.joda.time.DateTime;
  *     Data Access Protocol (RDAP)</a>
  */
 @Action(
-    service = GaeService.PUBAPI,
+    service = Action.Service.PUBAPI,
     path = "/rdap/domains",
     method = {GET, HEAD},
     auth = Auth.AUTH_PUBLIC)

core/src/main/java/google/registry/rdap/RdapEmptyAction.java

@@ -30,7 +30,7 @@ import java.io.IOException;
  * them the help response.
  */
 @Action(
-    service = Action.GaeService.PUBAPI,
+    service = Action.Service.PUBAPI,
     path = "/rdap/",
     method = {GET, HEAD},
     auth = Auth.AUTH_PUBLIC)

core/src/main/java/google/registry/rdap/RdapEntityAction.java

@@ -25,7 +25,6 @@ import google.registry.rdap.RdapJsonFormatter.OutputDataType;
 import google.registry.rdap.RdapMetrics.EndpointType;
 import google.registry.rdap.RdapObjectClasses.RdapEntity;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.HttpException.NotFoundException;
 import google.registry.request.auth.Auth;
 import jakarta.inject.Inject;
@@ -40,7 +39,7 @@ import java.util.Optional;
  * the handle of the entity with the registrar role is be [sic] equal to the IANA Registrar ID.
  */
 @Action(
-    service = GaeService.PUBAPI,
+    service = Action.Service.PUBAPI,
     path = "/rdap/entity/",
     method = {GET, HEAD},
     isPrefix = true,

core/src/main/java/google/registry/rdap/RdapEntitySearchAction.java

@@ -31,7 +31,6 @@ import google.registry.rdap.RdapMetrics.SearchType;
 import google.registry.rdap.RdapSearchResults.EntitySearchResponse;
 import google.registry.rdap.RdapSearchResults.IncompletenessWarningType;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.HttpException.BadRequestException;
 import google.registry.request.HttpException.NotFoundException;
 import google.registry.request.HttpException.UnprocessableEntityException;
@@ -56,7 +55,7 @@ import java.util.Optional;
  *     Data Access Protocol (RDAP)</a>
  */
 @Action(
-    service = GaeService.PUBAPI,
+    service = Action.Service.PUBAPI,
     path = "/rdap/entities",
     method = {GET, HEAD},
     auth = Auth.AUTH_PUBLIC)

core/src/main/java/google/registry/rdap/RdapHelpAction.java

@@ -22,7 +22,6 @@ import google.registry.rdap.RdapDataStructures.Notice;
 import google.registry.rdap.RdapMetrics.EndpointType;
 import google.registry.rdap.RdapObjectClasses.HelpResponse;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.HttpException.NotFoundException;
 import google.registry.request.auth.Auth;
 import jakarta.inject.Inject;
@@ -30,7 +29,7 @@ import java.util.Optional;
 
 /** RDAP action for help requests. */
 @Action(
-    service = GaeService.PUBAPI,
+    service = Action.Service.PUBAPI,
     path = RdapHelpAction.PATH,
     method = {GET, HEAD},
     isPrefix = true,

core/src/main/java/google/registry/rdap/RdapIpAction.java

@@ -20,7 +20,6 @@ import static google.registry.request.Action.Method.HEAD;
 import google.registry.rdap.RdapMetrics.EndpointType;
 import google.registry.rdap.RdapObjectClasses.ReplyPayloadBase;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.HttpException.NotImplementedException;
 import google.registry.request.auth.Auth;
 import jakarta.inject.Inject;
@@ -32,7 +31,7 @@ import jakarta.inject.Inject;
  * ARIN, not domain registries.
  */
 @Action(
-    service = GaeService.PUBAPI,
+    service = Action.Service.PUBAPI,
     path = "/rdap/ip/",
     method = {GET, HEAD},
     isPrefix = true,

core/src/main/java/google/registry/rdap/RdapNameserverAction.java

@@ -26,7 +26,6 @@ import google.registry.rdap.RdapJsonFormatter.OutputDataType;
 import google.registry.rdap.RdapMetrics.EndpointType;
 import google.registry.rdap.RdapObjectClasses.RdapNameserver;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.HttpException.BadRequestException;
 import google.registry.request.HttpException.NotFoundException;
 import google.registry.request.auth.Auth;
@@ -35,7 +34,7 @@ import java.util.Optional;
 
 /** RDAP action for nameserver requests. */
 @Action(
-    service = GaeService.PUBAPI,
+    service = Action.Service.PUBAPI,
     path = "/rdap/nameserver/",
     method = {GET, HEAD},
     isPrefix = true,

core/src/main/java/google/registry/rdap/RdapNameserverSearchAction.java

@@ -34,7 +34,6 @@ import google.registry.rdap.RdapMetrics.SearchType;
 import google.registry.rdap.RdapSearchResults.IncompletenessWarningType;
 import google.registry.rdap.RdapSearchResults.NameserverSearchResponse;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.HttpException.BadRequestException;
 import google.registry.request.HttpException.NotFoundException;
 import google.registry.request.HttpException.UnprocessableEntityException;
@@ -57,7 +56,7 @@ import java.util.Optional;
  *     Data Access Protocol (RDAP)</a>
  */
 @Action(
-    service = GaeService.PUBAPI,
+    service = Action.Service.PUBAPI,
     path = "/rdap/nameservers",
     method = {GET, HEAD},
     auth = Auth.AUTH_PUBLIC)

core/src/main/java/google/registry/rdap/UpdateRegistrarRdapBaseUrlsAction.java

@@ -27,7 +27,6 @@ import com.google.common.flogger.FluentLogger;
 import google.registry.model.registrar.Registrar;
 import google.registry.persistence.PersistenceModule;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.HttpException.InternalServerErrorException;
 import google.registry.request.UrlConnectionService;
 import google.registry.request.UrlConnectionUtils;
@@ -54,7 +53,7 @@ import org.apache.commons.csv.CSVRecord;
  * CSV endpoint requires no authentication.
  */
 @Action(
-    service = GaeService.BACKEND,
+    service = Action.Service.BACKEND,
     path = "/_dr/task/updateRegistrarRdapBaseUrls",
     automaticallyPrintOk = true,
     auth = Auth.AUTH_ADMIN)

core/src/main/java/google/registry/rde/BrdaCopyAction.java

@@ -32,7 +32,6 @@ import google.registry.model.rde.RdeNamingUtils;
 import google.registry.model.rde.RdeRevision;
 import google.registry.model.tld.Tld;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.HttpException.NoContentException;
 import google.registry.request.Parameter;
 import google.registry.request.RequestParameters;
@@ -63,7 +62,7 @@ import org.joda.time.DateTime;
  *     Agreement</a>
  */
 @Action(
-    service = GaeService.BACKEND,
+    service = Action.Service.BACKEND,
     path = BrdaCopyAction.PATH,
     method = POST,
     automaticallyPrintOk = true,

core/src/main/java/google/registry/rde/DomainToXjcConverter.java

@@ -168,20 +168,18 @@ final class DomainToXjcConverter {
         //    as the holder of the domain name object.
         Optional<VKey<Contact>> registrant = model.getRegistrant();
         if (registrant.isPresent()) {
-          Contact registrantContact = tm().transact(() -> tm().loadByKey(registrant.get()));
-          checkState(
-              registrantContact != null,
-              "Registrant contact %s on domain %s does not exist",
-              registrant,
-              domainName);
-          bean.setRegistrant(registrantContact.getContactId());
+          Optional<Contact> registrantContact =
+              tm().transact(() -> tm().loadByKeyIfPresent(registrant.get()));
+          registrantContact.ifPresent(c -> bean.setRegistrant(c.getContactId()));
         }
 
         // o  Zero or more OPTIONAL <contact> elements that contain identifiers
         //    for the human or organizational social information objects
         //    associated with the domain name object.
         for (DesignatedContact contact : model.getContacts()) {
-          bean.getContacts().add(convertDesignatedContact(contact, domainName));
+          Optional<XjcDomainContactType> contactType =
+              convertDesignatedContact(contact, domainName);
+          contactType.ifPresent(c -> bean.getContacts().add(c));
         }
 
         // o  An OPTIONAL <secDNS> element that contains the public key
@@ -292,7 +290,7 @@ final class DomainToXjcConverter {
   }
 
   /** Converts {@link DesignatedContact} to {@link XjcDomainContactType}. */
-  private static XjcDomainContactType convertDesignatedContact(
+  private static Optional<XjcDomainContactType> convertDesignatedContact(
       DesignatedContact model, String domainName) {
     XjcDomainContactType bean = new XjcDomainContactType();
     checkState(
@@ -300,15 +298,13 @@ final class DomainToXjcConverter {
         "Contact key for type %s is null on domain %s",
         model.getType(),
         domainName);
-    Contact contact = tm().transact(() -> tm().loadByKey(model.getContactKey()));
-    checkState(
-        contact != null,
-        "Contact %s on domain %s does not exist",
-        model.getContactKey(),
-        domainName);
+    Optional<Contact> contact = tm().transact(() -> tm().loadByKeyIfPresent(model.getContactKey()));
+    if (contact.isEmpty()) {
+      return Optional.empty();
+    }
     bean.setType(XjcDomainContactAttrType.fromValue(Ascii.toLowerCase(model.getType().toString())));
-    bean.setValue(contact.getContactId());
-    return bean;
+    bean.setValue(contact.get().getContactId());
+    return Optional.of(bean);
   }
 
   private DomainToXjcConverter() {}

core/src/main/java/google/registry/rde/RdeModule.java

@@ -31,11 +31,7 @@ import jakarta.servlet.http.HttpServletRequest;
 import java.util.Optional;
 import org.joda.time.DateTime;
 
-/**
- * Dagger module for RDE package.
- *
- * @see "google.registry.module.backend.BackendRequestComponent"
- */
+/** Dagger module for RDE package. */
 @Module
 public abstract class RdeModule {
 

core/src/main/java/google/registry/rde/RdeReportAction.java

@@ -36,7 +36,6 @@ import google.registry.model.rde.RdeRevision;
 import google.registry.model.tld.Tld;
 import google.registry.rde.EscrowTaskRunner.EscrowTask;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.HttpException.NoContentException;
 import google.registry.request.Parameter;
 import google.registry.request.RequestParameters;
@@ -54,7 +53,7 @@ import org.joda.time.Duration;
  * Action that uploads a small XML RDE report to ICANN after {@link RdeUploadAction} has finished.
  */
 @Action(
-    service = GaeService.BACKEND,
+    service = Action.Service.BACKEND,
     path = RdeReportAction.PATH,
     method = POST,
     auth = Auth.AUTH_ADMIN)

core/src/main/java/google/registry/rde/RdeStagingAction.java

@@ -50,7 +50,6 @@ import google.registry.model.host.Host;
 import google.registry.model.rde.RdeMode;
 import google.registry.model.registrar.Registrar;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.HttpException.BadRequestException;
 import google.registry.request.Parameter;
 import google.registry.request.RequestParameters;
@@ -205,7 +204,7 @@ import org.joda.time.Duration;
  *     Name Registration Data Objects Mapping</a>
  */
 @Action(
-    service = GaeService.BACKEND,
+    service = Action.Service.BACKEND,
     path = RdeStagingAction.PATH,
     method = {GET, POST},
     auth = Auth.AUTH_ADMIN)

core/src/main/java/google/registry/rde/RdeUploadAction.java

@@ -50,7 +50,6 @@ import google.registry.model.tld.Tld;
 import google.registry.rde.EscrowTaskRunner.EscrowTask;
 import google.registry.rde.JSchSshSession.JSchSshSessionFactory;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.HttpException.NoContentException;
 import google.registry.request.Parameter;
 import google.registry.request.RequestParameters;
@@ -84,7 +83,7 @@ import org.joda.time.Duration;
  * RdeReportAction}.
  */
 @Action(
-    service = GaeService.BACKEND,
+    service = Action.Service.BACKEND,
     path = RdeUploadAction.PATH,
     method = POST,
     auth = Auth.AUTH_ADMIN)

core/src/main/java/google/registry/reporting/billing/CopyDetailReportsAction.java

@@ -33,7 +33,6 @@ import google.registry.gcs.GcsUtils;
 import google.registry.model.registrar.Registrar;
 import google.registry.reporting.billing.BillingModule.InvoiceDirectoryPrefix;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.Response;
 import google.registry.request.auth.Auth;
 import google.registry.storage.drive.DriveConnection;
@@ -45,7 +44,7 @@ import java.util.Optional;
 
 /** Copy all registrar detail reports in a given bucket's subdirectory from GCS to Drive. */
 @Action(
-    service = GaeService.BACKEND,
+    service = Action.Service.BACKEND,
     path = CopyDetailReportsAction.PATH,
     method = POST,
     auth = Auth.AUTH_ADMIN)

core/src/main/java/google/registry/reporting/billing/GenerateInvoicesAction.java

@@ -32,7 +32,6 @@ import google.registry.config.RegistryConfig.Config;
 import google.registry.persistence.PersistenceModule;
 import google.registry.reporting.ReportingModule;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.Parameter;
 import google.registry.request.Response;
 import google.registry.request.auth.Auth;
@@ -51,7 +50,7 @@ import org.joda.time.YearMonth;
  * template. The pipeline then generates invoices for the month and stores them on GCS.
  */
 @Action(
-    service = GaeService.BACKEND,
+    service = Action.Service.BACKEND,
     path = GenerateInvoicesAction.PATH,
     method = POST,
     auth = Auth.AUTH_ADMIN)

core/src/main/java/google/registry/reporting/billing/PublishInvoicesAction.java

@@ -30,7 +30,6 @@ import google.registry.batch.CloudTasksUtils;
 import google.registry.config.RegistryConfig.Config;
 import google.registry.reporting.ReportingModule;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.Parameter;
 import google.registry.request.Response;
 import google.registry.request.auth.Auth;
@@ -49,7 +48,7 @@ import org.joda.time.YearMonth;
  *     Job States</a>
  */
 @Action(
-    service = GaeService.BACKEND,
+    service = Action.Service.BACKEND,
     path = PublishInvoicesAction.PATH,
     method = POST,
     auth = Auth.AUTH_ADMIN)

core/src/main/java/google/registry/reporting/icann/IcannReportingStagingAction.java

@@ -34,7 +34,6 @@ import google.registry.groups.GmailClient;
 import google.registry.reporting.ReportingModule;
 import google.registry.reporting.icann.IcannReportingModule.ReportType;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.Parameter;
 import google.registry.request.Response;
 import google.registry.request.auth.Auth;
@@ -66,7 +65,7 @@ import org.joda.time.format.DateTimeFormat;
  * 'transactions'. If none specified - defaults to generating both.
  */
 @Action(
-    service = GaeService.BACKEND,
+    service = Action.Service.BACKEND,
     path = IcannReportingStagingAction.PATH,
     method = POST,
     auth = Auth.AUTH_ADMIN)

core/src/main/java/google/registry/reporting/icann/IcannReportingUploadAction.java

@@ -35,7 +35,6 @@ import google.registry.model.tld.Tld.TldType;
 import google.registry.model.tld.Tlds;
 import google.registry.persistence.VKey;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.HttpException.ServiceUnavailableException;
 import google.registry.request.Response;
 import google.registry.request.auth.Auth;
@@ -68,7 +67,7 @@ import org.joda.time.Duration;
  * Defaults to "icann/monthly/[last month in yyyy-MM format]".
  */
 @Action(
-    service = GaeService.BACKEND,
+    service = Action.Service.BACKEND,
     path = IcannReportingUploadAction.PATH,
     method = POST,
     auth = Auth.AUTH_ADMIN)

core/src/main/java/google/registry/reporting/spec11/GenerateSpec11ReportAction.java

@@ -32,7 +32,6 @@ import google.registry.config.RegistryConfig.Config;
 import google.registry.keyring.api.KeyModule.Key;
 import google.registry.reporting.ReportingModule;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.Parameter;
 import google.registry.request.Response;
 import google.registry.request.auth.Auth;
@@ -50,7 +49,7 @@ import org.joda.time.LocalDate;
  * generates the specified month's Spec11 report and stores it on GCS.
  */
 @Action(
-    service = GaeService.BACKEND,
+    service = Action.Service.BACKEND,
     path = GenerateSpec11ReportAction.PATH,
     method = POST,
     auth = Auth.AUTH_ADMIN)

core/src/main/java/google/registry/reporting/spec11/PublishSpec11ReportAction.java

@@ -38,7 +38,6 @@ import google.registry.config.RegistryConfig.Config;
 import google.registry.reporting.ReportingModule;
 import google.registry.reporting.spec11.soy.Spec11EmailSoyInfo;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.Parameter;
 import google.registry.request.Response;
 import google.registry.request.auth.Auth;
@@ -57,7 +56,7 @@ import org.json.JSONException;
  * ImmutableSet)} on success or {@link Spec11EmailUtils#sendAlertEmail(String, String)} on failure.
  */
 @Action(
-    service = GaeService.BACKEND,
+    service = Action.Service.BACKEND,
     path = PublishSpec11ReportAction.PATH,
     method = POST,
     auth = Auth.AUTH_ADMIN)

core/src/main/java/google/registry/request/Action.java

@@ -14,7 +14,6 @@
 
 package google.registry.request;
 
-import static com.google.common.base.Preconditions.checkState;
 
 import google.registry.config.RegistryConfig;
 import google.registry.request.auth.Auth;
@@ -38,46 +37,7 @@ public @interface Action {
     DELETE
   }
 
-  interface Service {
-    String getServiceId();
-
-    URL getServiceUrl();
-  }
-
-  enum GaeService implements Service {
-    BSA("bsa"),
-    DEFAULT("default"),
-    TOOLS("tools"),
-    BACKEND("backend"),
-    PUBAPI("pubapi");
-
-    private final String serviceId;
-
-    GaeService(String serviceId) {
-      this.serviceId = serviceId;
-    }
-
-    @Override
-    public String getServiceId() {
-      return serviceId;
-    }
-
-    @Override
-    public URL getServiceUrl() {
-      return switch (this) {
-        case DEFAULT -> RegistryConfig.getDefaultServer();
-        case TOOLS -> RegistryConfig.getToolsServer();
-        case BACKEND -> RegistryConfig.getBackendServer();
-        case BSA -> RegistryConfig.getBsaServer();
-        case PUBAPI -> RegistryConfig.getPubapiServer();
-      };
-    }
-  }
-
-  enum GkeService implements Service {
-    // This designation means that it defers to the GAE service, so we don't have to annotate EVERY
-    // action during the GKE migration.
-    SAME_AS_GAE("same_as_gae"),
+  enum Service {
     FRONTEND("frontend"),
     BACKEND("backend"),
     PUBAPI("pubapi"),
@@ -85,27 +45,21 @@ public @interface Action {
 
     private final String serviceId;
 
-    GkeService(String serviceId) {
+    Service(String serviceId) {
       this.serviceId = serviceId;
     }
 
-    @Override
     public String getServiceId() {
-      checkState(this != SAME_AS_GAE, "Cannot get service Id for SAME_AS_GAE");
       return serviceId;
     }
 
-    @Override
     public URL getServiceUrl() {
       return RegistryConfig.getServiceUrl(this);
     }
   }
 
-  /** Which App Engine service this action lives on. */
-  GaeService service();
-
   /** Which GKE service this action lives on. */
-  GkeService gkeService() default GkeService.SAME_AS_GAE;
+  Service service();
 
   /** HTTP path to serve the action from. The path components must be percent-escaped. */
   String path();
@@ -127,22 +81,4 @@ public @interface Action {
 
   /** Authentication settings. */
   Auth auth();
-
-  // TODO(jianglai): Use Action.gkeService() directly once we are off GAE.
-  class ServiceGetter {
-    public static GkeService get(Action action) {
-      GkeService service = action.gkeService();
-      if (service != GkeService.SAME_AS_GAE) {
-        return service;
-      }
-      GaeService gaeService = action.service();
-      return switch (gaeService) {
-        case DEFAULT -> GkeService.FRONTEND;
-        case BACKEND -> GkeService.BACKEND;
-        case TOOLS -> GkeService.BACKEND;
-        case BSA -> GkeService.BACKEND;
-        case PUBAPI -> GkeService.PUBAPI;
-      };
-    }
-  }
 }

core/src/main/java/google/registry/request/RequestHandler.java

@@ -23,7 +23,7 @@ import static jakarta.servlet.http.HttpServletResponse.SC_NOT_FOUND;
 
 import com.google.common.flogger.FluentLogger;
 import google.registry.config.RegistryConfig;
-import google.registry.request.Action.GkeService;
+import google.registry.request.Action.Service;
 import google.registry.request.auth.AuthResult;
 import google.registry.request.auth.RequestAuthenticator;
 import google.registry.util.NonFinalForTesting;
@@ -139,21 +139,20 @@ public class RequestHandler<C> {
       rsp.sendError(SC_NOT_FOUND);
       return;
     }
-    if (RegistryEnvironment.isOnJetty()) {
-      GkeService service = Action.ServiceGetter.get(route.get().action());
-      String expectedDomain = RegistryConfig.getServiceUrl(service).getHost();
-      String actualDomain = req.getServerName();
-      // If the request doesn't come from GKE readiness prober
-      String maybeUserAgent = Optional.ofNullable(req.getHeader("User-Agent")).orElse("");
-      if (!maybeUserAgent.startsWith("kube-probe")
-          // If the hostname is "localhost", it must have come from the sidecar proxy.
-          && !Objects.equals("localhost", actualDomain)
-          && !Objects.equals(actualDomain, expectedDomain)) {
-        logger.atWarning().log(
-            "Actual domain %s does not match expected domain %s", actualDomain, expectedDomain);
-        rsp.sendError(SC_NOT_FOUND);
-        return;
-      }
+    Service service = route.get().action().service();
+    String expectedDomain = RegistryConfig.getServiceUrl(service).getHost();
+    String actualDomain = req.getServerName();
+    // If the request doesn't come from GKE readiness prober
+    String maybeUserAgent = Optional.ofNullable(req.getHeader("User-Agent")).orElse("");
+    if (!maybeUserAgent.startsWith("kube-probe")
+        // If the hostname is "localhost", it must have come from the sidecar proxy.
+        && !Objects.equals("localhost", actualDomain)
+        && !Objects.equals(actualDomain, expectedDomain)
+        && !RegistryEnvironment.isInTestServer()) {
+      logger.atWarning().log(
+          "Actual domain %s does not match expected domain %s", actualDomain, expectedDomain);
+      rsp.sendError(SC_NOT_FOUND);
+      return;
     }
     if (!route.get().isMethodAllowed(method)) {
       logger.atWarning().log("Method %s not allowed for: %s", method, path);

core/src/main/java/google/registry/request/RouterDisplayHelper.java

@@ -94,7 +94,7 @@ public class RouterDisplayHelper {
   private static String routeToString(Route route, String formatString) {
     return String.format(
         formatString,
-        Action.ServiceGetter.get(route.action()).name(),
+        route.action().service().name(),
         route.action().isPrefix() ? (route.action().path() + "(*)") : route.action().path(),
         route.actionClass().getSimpleName(),
         Joiner.on(",").join(route.action().method()),
@@ -112,7 +112,7 @@ public class RouterDisplayHelper {
     int methodsWidth = 7;
     int minLevelWidth = 3;
     for (Route route : routes) {
-      int len = Action.ServiceGetter.get(route.action()).name().length();
+      int len = route.action().service().name().length();
       if (len > serviceWidth) {
         serviceWidth = len;
       }
@@ -148,9 +148,7 @@ public class RouterDisplayHelper {
     return headerToString(formatString)
         + String.format("%n")
         + Streams.stream(routes)
-            .sorted(
-                Comparator.comparing(
-                    (Route route) -> Action.ServiceGetter.get(route.action()).ordinal()))
+            .sorted(Comparator.comparing((Route route) -> route.action().service().ordinal()))
             .map(route -> routeToString(route, formatString))
             .collect(joining(String.format("%n")));
   }

core/src/main/java/google/registry/request/auth/AuthModule.java

@@ -54,10 +54,7 @@ public class AuthModule {
   // See https://cloud.google.com/iap/docs/signed-headers-howto#securing_iap_headers.
   public static final String IAP_HEADER_NAME = "X-Goog-IAP-JWT-Assertion";
   public static final String BEARER_PREFIX = "Bearer ";
-  // TODO (jianglai): Only use GKE audience once we are fully migrated to GKE.
-  // See: https://cloud.google.com/iap/docs/signed-headers-howto#verifying_the_jwt_payload
-  private static final String IAP_GAE_AUDIENCE_FORMAT = "/projects/%d/apps/%s";
-  private static final String IAP_GKE_AUDIENCE_FORMAT = "/projects/%d/global/backendServices/%d";
+  private static final String IAP_AUDIENCE_FORMAT = "/projects/%d/global/backendServices/%d";
   private static final String IAP_ISSUER_URL = "https://cloud.google.com/iap";
   private static final String REGULAR_ISSUER_URL = "https://accounts.google.com";
   // The backend service IDs created when setting up GKE routes. They will be included in the
@@ -89,24 +86,18 @@ public class AuthModule {
   @IapOidc
   @Singleton
   TokenVerifier provideIapTokenVerifier(
-      @Config("projectId") String projectId,
       @Config("projectIdNumber") long projectIdNumber,
       @Named("backendServiceIdMap") Supplier<ImmutableMap<String, Long>> backendServiceIdMap) {
     com.google.auth.oauth2.TokenVerifier.Builder tokenVerifierBuilder =
         com.google.auth.oauth2.TokenVerifier.newBuilder().setIssuer(IAP_ISSUER_URL);
     return (String service, String token) -> {
-      String audience;
-      if (RegistryEnvironment.isOnJetty()) {
-        Long backendServiceId = backendServiceIdMap.get().get(service);
-        checkNotNull(
-            backendServiceId,
-            "Backend service ID not found for service: %s, available IDs are %s",
-            service,
-            backendServiceIdMap);
-        audience = String.format(IAP_GKE_AUDIENCE_FORMAT, projectIdNumber, backendServiceId);
-      } else {
-        audience = String.format(IAP_GAE_AUDIENCE_FORMAT, projectIdNumber, projectId);
-      }
+      Long backendServiceId = backendServiceIdMap.get().get(service);
+      checkNotNull(
+          backendServiceId,
+          "Backend service ID not found for service: %s, available IDs are %s",
+          service,
+          backendServiceIdMap);
+      String audience = String.format(IAP_AUDIENCE_FORMAT, projectIdNumber, backendServiceId);
       return tokenVerifierBuilder.setAudience(audience).build().verify(token);
     };
   }

core/src/main/java/google/registry/request/auth/OidcTokenAuthenticationMechanism.java

@@ -86,13 +86,10 @@ public abstract class OidcTokenAuthenticationMechanism implements Authentication
     }
     JsonWebSignature token = null;
     try {
-      String service = null;
-      if (RegistryEnvironment.isOnJetty()) {
-        String hostname = request.getServerName();
-        service = Splitter.on('.').split(hostname).iterator().next();
-        if (request.getHeader("canary") != null) {
-          service += "-canary";
-        }
+      String hostname = request.getServerName();
+      String service = Splitter.on('.').split(hostname).iterator().next();
+      if (request.getHeader("canary") != null) {
+        service += "-canary";
       }
       token = tokenVerifier.verify(service, rawIdToken);
     } catch (Exception e) {

core/src/main/java/google/registry/tmch/NordnUploadAction.java

@@ -37,7 +37,6 @@ import google.registry.batch.CloudTasksUtils;
 import google.registry.config.RegistryConfig.Config;
 import google.registry.model.domain.Domain;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.Parameter;
 import google.registry.request.RequestParameters;
 import google.registry.request.UrlConnectionService;
@@ -66,7 +65,7 @@ import org.joda.time.Duration;
  * @see NordnVerifyAction
  */
 @Action(
-    service = GaeService.BACKEND,
+    service = Action.Service.BACKEND,
     path = NordnUploadAction.PATH,
     method = Action.Method.POST,
     automaticallyPrintOk = true,

core/src/main/java/google/registry/tmch/NordnVerifyAction.java

@@ -23,7 +23,6 @@ import com.google.common.annotations.VisibleForTesting;
 import com.google.common.flogger.FluentLogger;
 import com.google.common.io.ByteSource;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.HttpException.ConflictException;
 import google.registry.request.Parameter;
 import google.registry.request.RequestParameters;
@@ -51,7 +50,7 @@ import java.util.Map.Entry;
  *     http://tools.ietf.org/html/draft-lozano-tmch-func-spec-08#section-5.2.3.3</a>
  */
 @Action(
-    service = GaeService.BACKEND,
+    service = Action.Service.BACKEND,
     path = NordnVerifyAction.PATH,
     method = Action.Method.POST,
     automaticallyPrintOk = true,

core/src/main/java/google/registry/tmch/TmchCrlAction.java

@@ -19,7 +19,6 @@ import static java.nio.charset.StandardCharsets.UTF_8;
 
 import google.registry.config.RegistryConfig.Config;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.auth.Auth;
 import jakarta.inject.Inject;
 import java.io.IOException;
@@ -29,7 +28,7 @@ import java.util.Optional;
 
 /** Action to download the latest ICANN TMCH CRL from MarksDB. */
 @Action(
-    service = GaeService.BACKEND,
+    service = Action.Service.BACKEND,
     path = "/_dr/task/tmchCrl",
     method = POST,
     automaticallyPrintOk = true,

core/src/main/java/google/registry/tmch/TmchDnlAction.java

@@ -22,7 +22,6 @@ import google.registry.keyring.api.KeyModule.Key;
 import google.registry.model.tmch.ClaimsList;
 import google.registry.model.tmch.ClaimsListDao;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.auth.Auth;
 import jakarta.inject.Inject;
 import java.io.IOException;
@@ -32,7 +31,7 @@ import org.bouncycastle.openpgp.PGPException;
 
 /** Action to download the latest domain name list (aka claims list) from MarksDB. */
 @Action(
-    service = GaeService.BACKEND,
+    service = Action.Service.BACKEND,
     path = "/_dr/task/tmchDnl",
     method = POST,
     automaticallyPrintOk = true,

core/src/main/java/google/registry/tmch/TmchSmdrlAction.java

@@ -22,7 +22,6 @@ import google.registry.keyring.api.KeyModule.Key;
 import google.registry.model.smd.SignedMarkRevocationList;
 import google.registry.model.smd.SignedMarkRevocationListDao;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.auth.Auth;
 import jakarta.inject.Inject;
 import java.io.IOException;
@@ -32,7 +31,7 @@ import org.bouncycastle.openpgp.PGPException;
 
 /** Action to download the latest signed mark revocation list from MarksDB. */
 @Action(
-    service = GaeService.BACKEND,
+    service = Action.Service.BACKEND,
     path = "/_dr/task/tmchSmdrl",
     method = POST,
     automaticallyPrintOk = true,

core/src/main/java/google/registry/tools/CurlCommand.java

@@ -28,8 +28,6 @@ import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableMap;
 import com.google.common.net.MediaType;
 import google.registry.config.RegistryConfig.Config;
-import google.registry.request.Action.GaeService;
-import google.registry.request.Action.GkeService;
 import google.registry.request.Action.Service;
 import jakarta.inject.Inject;
 import java.util.List;
@@ -80,10 +78,6 @@ class CurlCommand implements CommandWithConnection {
       required = true)
   private String serviceName;
 
-  @Inject
-  @Config("useGke")
-  boolean useGke;
-
   @Inject
   @Config("useCanary")
   boolean useCanary;
@@ -103,11 +97,7 @@ class CurlCommand implements CommandWithConnection {
       throw new IllegalArgumentException("You may not specify a body for a get method.");
     }
 
-    Service service =
-        useGke
-            ? GkeService.valueOf(Ascii.toUpperCase(serviceName))
-            : GaeService.valueOf(Ascii.toUpperCase(serviceName));
-
+    Service service = Service.valueOf(Ascii.toUpperCase(serviceName));
     ServiceConnection connectionToService = connection.withService(service, useCanary);
     String response =
         (method == Method.GET)

core/src/main/java/google/registry/tools/ServiceConnection.java

@@ -19,7 +19,6 @@ import static com.google.common.base.Strings.isNullOrEmpty;
 import static com.google.common.base.Verify.verify;
 import static com.google.common.net.HttpHeaders.X_REQUESTED_WITH;
 import static com.google.common.net.MediaType.JSON_UTF_8;
-import static google.registry.config.ConfigUtils.makeUrl;
 import static google.registry.config.RegistryConfig.CANARY_HEADER;
 import static google.registry.security.JsonHttp.JSON_SAFETY_PREFIX;
 import static java.nio.charset.StandardCharsets.UTF_8;
@@ -36,8 +35,6 @@ import com.google.common.collect.ImmutableMap;
 import com.google.common.io.CharStreams;
 import com.google.common.net.MediaType;
 import google.registry.config.RegistryConfig.Config;
-import google.registry.request.Action.GaeService;
-import google.registry.request.Action.GkeService;
 import google.registry.request.Action.Service;
 import jakarta.inject.Inject;
 import java.io.IOException;
@@ -61,10 +58,9 @@ public class ServiceConnection {
 
   @Inject
   ServiceConnection(
-      @Config("useGke") boolean useGke,
       @Config("useCanary") boolean useCanary,
       HttpRequestFactory requestFactory) {
-    this(useGke ? GkeService.BACKEND : GaeService.TOOLS, requestFactory, useCanary);
+    this(Service.BACKEND, requestFactory, useCanary);
   }
 
   private ServiceConnection(Service service, HttpRequestFactory requestFactory, boolean useCanary) {
@@ -75,14 +71,6 @@ public class ServiceConnection {
 
   /** Returns a copy of this connection that talks to a different service endpoint. */
   public ServiceConnection withService(Service service, boolean useCanary) {
-    Class<? extends Service> oldServiceClazz = this.service.getClass();
-    Class<? extends Service> newServiceClazz = service.getClass();
-    if (oldServiceClazz != newServiceClazz) {
-      throw new IllegalArgumentException(
-          String.format(
-              "Cannot switch from %s to %s",
-              oldServiceClazz.getSimpleName(), newServiceClazz.getSimpleName()));
-    }
     return new ServiceConnection(service, requestFactory, useCanary);
   }
 
@@ -136,12 +124,6 @@ public class ServiceConnection {
   URL getServer() {
     URL url = service.getServiceUrl();
     verify(!isNullOrEmpty(url.getHost()), "Null host in url");
-    if (useCanary && service instanceof GaeService) {
-      url =
-          makeUrl(
-              String.format(
-                  "%s://nomulus-dot-%s%s", url.getProtocol(), url.getHost(), url.getFile()));
-    }
     return url;
   }
 

core/src/main/java/google/registry/tools/server/CreateGroupsAction.java

@@ -26,7 +26,6 @@ import google.registry.groups.GroupsConnection.Role;
 import google.registry.model.registrar.Registrar;
 import google.registry.model.registrar.RegistrarPoc;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.HttpException.BadRequestException;
 import google.registry.request.HttpException.InternalServerErrorException;
 import google.registry.request.Parameter;
@@ -41,7 +40,7 @@ import java.util.Optional;
 
 /** Action that creates Google Groups for a registrar's mailing lists. */
 @Action(
-    service = GaeService.TOOLS,
+    service = Action.Service.BACKEND,
     path = CreateGroupsAction.PATH,
     method = POST,
     auth = Auth.AUTH_ADMIN)

core/src/main/java/google/registry/tools/server/GenerateZoneFilesAction.java

@@ -33,7 +33,6 @@ import google.registry.model.domain.secdns.DomainDsData;
 import google.registry.model.host.Host;
 import google.registry.model.tld.Tld;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.HttpException.BadRequestException;
 import google.registry.request.JsonActionRunner;
 import google.registry.request.auth.Auth;
@@ -63,7 +62,7 @@ import org.joda.time.Duration;
  * days in the past, and must be at midnight UTC.
  */
 @Action(
-    service = GaeService.TOOLS,
+    service = Action.Service.BACKEND,
     path = GenerateZoneFilesAction.PATH,
     method = POST,
     auth = Auth.AUTH_ADMIN)

core/src/main/java/google/registry/tools/server/ListDomainsAction.java

@@ -28,7 +28,6 @@ import com.google.common.collect.ImmutableSet;
 import google.registry.model.EppResourceUtils;
 import google.registry.model.domain.Domain;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.Parameter;
 import google.registry.request.auth.Auth;
 import google.registry.util.Clock;
@@ -37,7 +36,7 @@ import jakarta.inject.Inject;
 
 /** An action that lists domains, for use by the {@code nomulus list_domains} command. */
 @Action(
-    service = GaeService.TOOLS,
+    service = Action.Service.BACKEND,
     path = ListDomainsAction.PATH,
     method = {GET, POST},
     auth = Auth.AUTH_ADMIN)

core/src/main/java/google/registry/tools/server/ListHostsAction.java

@@ -25,7 +25,6 @@ import com.google.common.collect.ImmutableSet;
 import google.registry.model.EppResourceUtils;
 import google.registry.model.host.Host;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.auth.Auth;
 import google.registry.util.Clock;
 import jakarta.inject.Inject;
@@ -33,7 +32,7 @@ import org.joda.time.DateTime;
 
 /** An action that lists hosts, for use by the {@code nomulus list_hosts} command. */
 @Action(
-    service = GaeService.TOOLS,
+    service = Action.Service.BACKEND,
     path = ListHostsAction.PATH,
     method = {GET, POST},
     auth = Auth.AUTH_ADMIN)

core/src/main/java/google/registry/tools/server/ListPremiumListsAction.java

@@ -23,7 +23,6 @@ import com.google.common.collect.ImmutableSet;
 import google.registry.model.tld.label.PremiumList;
 import google.registry.model.tld.label.PremiumListDao;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.auth.Auth;
 import jakarta.inject.Inject;
 import java.util.Comparator;
@@ -33,7 +32,7 @@ import java.util.Optional;
  * An action that lists premium lists, for use by the {@code nomulus list_premium_lists} command.
  */
 @Action(
-    service = GaeService.TOOLS,
+    service = Action.Service.BACKEND,
     path = ListPremiumListsAction.PATH,
     method = {GET, POST},
     auth = Auth.AUTH_ADMIN)

core/src/main/java/google/registry/tools/server/ListRegistrarsAction.java

@@ -22,13 +22,12 @@ import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.ImmutableSet;
 import google.registry.model.registrar.Registrar;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.auth.Auth;
 import jakarta.inject.Inject;
 
 /** An action that lists registrars, for use by the {@code nomulus list_registrars} command. */
 @Action(
-    service = GaeService.TOOLS,
+    service = Action.Service.BACKEND,
     path = ListRegistrarsAction.PATH,
     method = {GET, POST},
     auth = Auth.AUTH_ADMIN)

core/src/main/java/google/registry/tools/server/ListReservedListsAction.java

@@ -23,7 +23,6 @@ import com.google.common.collect.ImmutableSet;
 import google.registry.model.tld.label.ReservedList;
 import google.registry.model.tld.label.ReservedListDao;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.auth.Auth;
 import jakarta.inject.Inject;
 import java.util.Comparator;
@@ -31,7 +30,7 @@ import java.util.Optional;
 
 /** A that lists reserved lists, for use by the {@code nomulus list_reserved_lists} command. */
 @Action(
-    service = GaeService.TOOLS,
+    service = Action.Service.BACKEND,
     path = ListReservedListsAction.PATH,
     method = {GET, POST},
     auth = Auth.AUTH_ADMIN)

core/src/main/java/google/registry/tools/server/ListTldsAction.java

@@ -24,7 +24,6 @@ import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.ImmutableSet;
 import google.registry.model.tld.Tld;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.auth.Auth;
 import google.registry.util.Clock;
 import jakarta.inject.Inject;
@@ -32,7 +31,7 @@ import org.joda.time.DateTime;
 
 /** An action that lists top-level domains, for use by the {@code nomulus list_tlds} command. */
 @Action(
-    service = GaeService.TOOLS,
+    service = Action.Service.BACKEND,
     path = ListTldsAction.PATH,
     method = {GET, POST},
     auth = Auth.AUTH_ADMIN)

core/src/main/java/google/registry/tools/server/RefreshDnsForAllDomainsAction.java

@@ -29,7 +29,6 @@ import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableSet;
 import com.google.common.flogger.FluentLogger;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.Parameter;
 import google.registry.request.Response;
 import google.registry.request.auth.Auth;
@@ -58,7 +57,7 @@ import org.joda.time.Duration;
  * domains that have since been deleted.
  */
 @Action(
-    service = GaeService.TOOLS,
+    service = Action.Service.BACKEND,
     path = "/_dr/task/refreshDnsForAllDomains",
     auth = Auth.AUTH_ADMIN)
 public class RefreshDnsForAllDomainsAction implements Runnable {

core/src/main/java/google/registry/tools/server/UpdateUserGroupAction.java

@@ -20,7 +20,6 @@ import com.google.common.flogger.FluentLogger;
 import google.registry.groups.GroupsConnection;
 import google.registry.groups.GroupsConnection.Role;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.Parameter;
 import google.registry.request.Response;
 import google.registry.request.auth.Auth;
@@ -28,7 +27,7 @@ import jakarta.inject.Inject;
 
 /** Action that adds or deletes a console user to/from the group that has IAP permissions. */
 @Action(
-    service = GaeService.TOOLS,
+    service = Action.Service.BACKEND,
     path = UpdateUserGroupAction.PATH,
     method = POST,
     auth = Auth.AUTH_ADMIN)

core/src/main/java/google/registry/tools/server/VerifyOteAction.java

@@ -21,7 +21,6 @@ import com.google.common.collect.Maps;
 import google.registry.model.OteStats;
 import google.registry.model.OteStats.StatType;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
 import google.registry.request.JsonActionRunner;
 import google.registry.request.JsonActionRunner.JsonAction;
 import google.registry.request.auth.Auth;
@@ -35,7 +34,7 @@ import java.util.stream.Collectors;
  * OT&E commands that have been run just previously to verification may not be picked up yet.
  */
 @Action(
-    service = GaeService.TOOLS,
+    service = Action.Service.BACKEND,
     path = VerifyOteAction.PATH,
     method = Action.Method.POST,
     auth = Auth.AUTH_ADMIN)

core/src/main/java/google/registry/ui/server/console/ConsoleDomainGetAction.java

@@ -23,8 +23,7 @@ import google.registry.model.console.ConsolePermission;
 import google.registry.model.console.User;
 import google.registry.model.domain.Domain;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
-import google.registry.request.Action.GkeService;
+import google.registry.request.Action.Service;
 import google.registry.request.Parameter;
 import google.registry.request.auth.Auth;
 import jakarta.inject.Inject;
@@ -32,8 +31,7 @@ import java.util.Optional;
 
 /** Returns a JSON representation of a domain to the registrar console. */
 @Action(
-    service = GaeService.DEFAULT,
-    gkeService = GkeService.CONSOLE,
+    service = Service.CONSOLE,
     path = ConsoleDomainGetAction.PATH,
     auth = Auth.AUTH_PUBLIC_LOGGED_IN)
 public class ConsoleDomainGetAction extends ConsoleApiAction {

core/src/main/java/google/registry/ui/server/console/ConsoleDomainListAction.java

@@ -26,8 +26,7 @@ import google.registry.model.CreateAutoTimestamp;
 import google.registry.model.console.User;
 import google.registry.model.domain.Domain;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
-import google.registry.request.Action.GkeService;
+import google.registry.request.Action.Service;
 import google.registry.request.Parameter;
 import google.registry.request.auth.Auth;
 import jakarta.inject.Inject;
@@ -38,8 +37,7 @@ import org.joda.time.DateTime;
 
 /** Returns a (paginated) list of domains for a particular registrar. */
 @Action(
-    service = GaeService.DEFAULT,
-    gkeService = GkeService.CONSOLE,
+    service = Service.CONSOLE,
     path = ConsoleDomainListAction.PATH,
     method = Action.Method.GET,
     auth = Auth.AUTH_PUBLIC_LOGGED_IN)

core/src/main/java/google/registry/ui/server/console/ConsoleDumDownloadAction.java

@@ -26,8 +26,7 @@ import google.registry.model.console.ConsolePermission;
 import google.registry.model.console.ConsoleUpdateHistory;
 import google.registry.model.console.User;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
-import google.registry.request.Action.GkeService;
+import google.registry.request.Action.Service;
 import google.registry.request.Parameter;
 import google.registry.request.auth.Auth;
 import google.registry.util.Clock;
@@ -39,8 +38,7 @@ import org.apache.commons.csv.CSVPrinter;
 import org.joda.time.DateTime;
 
 @Action(
-    service = GaeService.DEFAULT,
-    gkeService = GkeService.CONSOLE,
+    service = Service.CONSOLE,
     path = ConsoleDumDownloadAction.PATH,
     method = {GET},
     auth = Auth.AUTH_PUBLIC_LOGGED_IN)

core/src/main/java/google/registry/ui/server/console/ConsoleEppPasswordAction.java

@@ -31,8 +31,7 @@ import google.registry.model.console.ConsoleUpdateHistory;
 import google.registry.model.console.User;
 import google.registry.model.registrar.Registrar;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
-import google.registry.request.Action.GkeService;
+import google.registry.request.Action.Service;
 import google.registry.request.Parameter;
 import google.registry.request.auth.Auth;
 import google.registry.request.auth.AuthenticatedRegistrarAccessor;
@@ -42,8 +41,7 @@ import jakarta.inject.Inject;
 import java.util.Optional;
 
 @Action(
-    service = GaeService.DEFAULT,
-    gkeService = GkeService.CONSOLE,
+    service = Service.CONSOLE,
     path = ConsoleEppPasswordAction.PATH,
     method = {POST},
     auth = Auth.AUTH_PUBLIC_LOGGED_IN)

core/src/main/java/google/registry/ui/server/console/ConsoleHistoryDataAction.java

@@ -29,8 +29,7 @@ import google.registry.model.console.GlobalRole;
 import google.registry.model.console.User;
 import google.registry.model.console.UserRoles;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
-import google.registry.request.Action.GkeService;
+import google.registry.request.Action.Service;
 import google.registry.request.Parameter;
 import google.registry.request.auth.Auth;
 import jakarta.inject.Inject;
@@ -38,8 +37,7 @@ import java.util.List;
 import java.util.Optional;
 
 @Action(
-    service = GaeService.DEFAULT,
-    gkeService = GkeService.CONSOLE,
+    service = Service.CONSOLE,
     path = ConsoleHistoryDataAction.PATH,
     method = {GET},
     auth = Auth.AUTH_PUBLIC_LOGGED_IN)

core/src/main/java/google/registry/ui/server/console/ConsoleOteAction.java

@@ -36,7 +36,7 @@ import google.registry.model.console.ConsolePermission;
 import google.registry.model.console.User;
 import google.registry.model.registrar.Registrar;
 import google.registry.request.Action;
-import google.registry.request.Action.GkeService;
+import google.registry.request.Action.Service;
 import google.registry.request.Parameter;
 import google.registry.request.auth.Auth;
 import google.registry.tools.IamClient;
@@ -48,8 +48,7 @@ import java.util.Map;
 import java.util.Optional;
 
 @Action(
-    service = Action.GaeService.DEFAULT,
-    gkeService = GkeService.CONSOLE,
+    service = Service.CONSOLE,
     path = ConsoleOteAction.PATH,
     method = {GET, POST},
     auth = Auth.AUTH_PUBLIC_LOGGED_IN)

core/src/main/java/google/registry/ui/server/console/ConsoleRegistryLockAction.java

@@ -23,6 +23,7 @@ import static jakarta.servlet.http.HttpServletResponse.SC_OK;
 import static jakarta.servlet.http.HttpServletResponse.SC_UNAUTHORIZED;
 
 import com.google.common.collect.ImmutableList;
+import com.google.common.flogger.FluentLogger;
 import com.google.gson.annotations.Expose;
 import google.registry.flows.EppException;
 import google.registry.flows.domain.DomainFlowUtils;
@@ -33,13 +34,13 @@ import google.registry.model.domain.RegistryLock;
 import google.registry.model.registrar.Registrar;
 import google.registry.model.tld.RegistryLockDao;
 import google.registry.request.Action;
-import google.registry.request.Action.GaeService;
-import google.registry.request.Action.GkeService;
+import google.registry.request.Action.Service;
 import google.registry.request.Parameter;
 import google.registry.request.Response;
 import google.registry.request.auth.Auth;
 import google.registry.tools.DomainLockUtils;
 import google.registry.util.EmailMessage;
+import google.registry.util.PasswordUtils.HashAlgorithm;
 import jakarta.inject.Inject;
 import jakarta.mail.internet.AddressException;
 import jakarta.mail.internet.InternetAddress;
@@ -54,20 +55,22 @@ import org.joda.time.Duration;
  * action).
  */
 @Action(
-    service = GaeService.DEFAULT,
-    gkeService = GkeService.CONSOLE,
+    service = Service.CONSOLE,
     path = ConsoleRegistryLockAction.PATH,
     method = {GET, POST},
     auth = Auth.AUTH_PUBLIC_LOGGED_IN)
 public class ConsoleRegistryLockAction extends ConsoleApiAction {
 
+  private static final FluentLogger logger = FluentLogger.forEnclosingClass();
+
   static final String PATH = "/console-api/registry-lock";
   static final String VERIFICATION_EMAIL_TEMPLATE =
       """
       Please click the link below to perform the lock / unlock action on domain %s. Note: this\
        code will expire in one hour.
 
-      %s""";
+      %s\
+      """;
 
   private final DomainLockUtils domainLockUtils;
   private final GmailClient gmailClient;
@@ -114,7 +117,6 @@ public class ConsoleRegistryLockAction extends ConsoleApiAction {
         optionalPostInput.orElseThrow(() -> new IllegalArgumentException("No POST input provided"));
     String domainName = postInput.domainName();
     boolean isLock = postInput.isLock();
-    Optional<String> maybePassword = Optional.ofNullable(postInput.password());
     Optional<Long> relockDurationMillis = Optional.ofNullable(postInput.relockDurationMillis());
 
     try {
@@ -126,11 +128,25 @@ public class ConsoleRegistryLockAction extends ConsoleApiAction {
     // Passwords aren't required for admin users, otherwise we need to validate it
     boolean isAdmin = user.getUserRoles().isAdmin();
     if (!isAdmin) {
-      checkArgument(maybePassword.isPresent(), "No password provided");
-      if (!user.verifyRegistryLockPassword(maybePassword.get())) {
+      checkArgument(postInput.password != null, "No password provided");
+      Optional<HashAlgorithm> hashAlgorithm = user.getCurrentHashAlgorithm(postInput.password);
+      if (hashAlgorithm.isEmpty()) {
         setFailedResponse("Incorrect registry lock password", SC_UNAUTHORIZED);
         return;
       }
+      // TODO(b/458423787): Remove this circa March 2026 after enough time has passed for the logins
+      // to have transitioned to Argon2 hashing.
+      if (hashAlgorithm.get() != HashAlgorithm.ARGON_2_ID) {
+        logger.atInfo().log("Rehashing existing registry lock password with ARGON_2_ID.");
+        tm().transact(
+                () ->
+                    tm().update(
+                            tm().loadByEntity(user)
+                                .asBuilder()
+                                .removeRegistryLockPassword()
+                                .setRegistryLockPassword(postInput.password)
+                                .build()));
+      }
     }
 
     String registryLockEmail =