Redirect legacy DNS names to current name

Guarded by feature flag, per application.

7 files changed, 111 insertions, 55 deletions

diff --git a/controller-server/pom.xml b/controller-server/pom.xml
index c4cb66de3ec..f22142db727 100644
--- a/controller-server/pom.xml
+++ b/controller-server/pom.xml
@@ -100,6 +100,13 @@
             <scope>provided</scope>
         </dependency>
 
+        <dependency>
+            <groupId>com.yahoo.vespa</groupId>
+            <artifactId>flags</artifactId>
+            <version>${project.version}</version>
+            <scope>provided</scope>
+        </dependency>
+
         <!-- compile -->
 
         <dependency>
diff --git a/controller-server/src/main/java/com/yahoo/vespa/hosted/controller/ApplicationController.java b/controller-server/src/main/java/com/yahoo/vespa/hosted/controller/ApplicationController.java
index 71d39f97988..b6993fbc421 100644
--- a/controller-server/src/main/java/com/yahoo/vespa/hosted/controller/ApplicationController.java
+++ b/controller-server/src/main/java/com/yahoo/vespa/hosted/controller/ApplicationController.java
@@ -13,6 +13,9 @@ import com.yahoo.vespa.athenz.api.AthenzDomain;
 import com.yahoo.vespa.athenz.api.AthenzPrincipal;
 import com.yahoo.vespa.athenz.api.AthenzUser;
 import com.yahoo.vespa.curator.Lock;
+import com.yahoo.vespa.flags.BooleanFlag;
+import com.yahoo.vespa.flags.FetchVector;
+import com.yahoo.vespa.flags.Flags;
 import com.yahoo.vespa.hosted.controller.api.ActivateResult;
 import com.yahoo.vespa.hosted.controller.api.application.v4.model.DeployOptions;
 import com.yahoo.vespa.hosted.controller.api.application.v4.model.EndpointStatus;
@@ -42,6 +45,7 @@ import com.yahoo.vespa.hosted.controller.api.integration.zone.ZoneId;
 import com.yahoo.vespa.hosted.controller.application.ApplicationPackage;
 import com.yahoo.vespa.hosted.controller.application.Deployment;
 import com.yahoo.vespa.hosted.controller.application.DeploymentMetrics;
+import com.yahoo.vespa.hosted.controller.application.GlobalDnsName;
 import com.yahoo.vespa.hosted.controller.application.JobList;
 import com.yahoo.vespa.hosted.controller.application.JobStatus;
 import com.yahoo.vespa.hosted.controller.application.JobStatus.JobRun;
@@ -112,6 +116,7 @@ public class ApplicationController {
     private final ConfigServer configServer;
     private final RoutingGenerator routingGenerator;
     private final Clock clock;
+    private final BooleanFlag redirectLegacyDnsFlag;
 
     private final DeploymentTrigger deploymentTrigger;
 
@@ -127,6 +132,7 @@ public class ApplicationController {
         this.configServer = configServer;
         this.routingGenerator = routingGenerator;
         this.clock = clock;
+        this.redirectLegacyDnsFlag = Flags.REDIRECT_LEGACY_DNS_NAMES.bindTo(controller.flagSource());
 
         this.artifactRepository = artifactRepository;
         this.applicationStore = applicationStore;
@@ -432,9 +438,18 @@ public class ApplicationController {
                 application = application.with(rotation.id());
                 store(application); // store assigned rotation even if deployment fails
 
-                registerRotationInDns(rotation, application.get().globalDnsName(controller.system()).get().dnsName());
-                registerRotationInDns(rotation, application.get().globalDnsName(controller.system()).get().secureDnsName());
-                registerRotationInDns(rotation, application.get().globalDnsName(controller.system()).get().oathDnsName());
+                GlobalDnsName dnsName = application.get().globalDnsName(controller.system())
+                                                   .orElseThrow(() -> new IllegalStateException("Expected rotation to be assigned"));
+                boolean redirectLegacyDns = redirectLegacyDnsFlag.with(FetchVector.Dimension.APPLICATION_ID, application.get().id().serializedForm())
+                                                                 .value();
+                registerCname(dnsName.oathDnsName(), rotation.name());
+                if (redirectLegacyDns) {
+                    registerCname(dnsName.dnsName(), dnsName.oathDnsName());
+                    registerCname(dnsName.secureDnsName(), dnsName.oathDnsName());
+                } else {
+                    registerCname(dnsName.dnsName(), rotation.name());
+                    registerCname(dnsName.secureDnsName(), rotation.name());
+                }
             }
         }
         return application;
@@ -494,24 +509,22 @@ public class ApplicationController {
                                  options.deployCurrentVersion);
     }
 
-    /** Register a DNS name for rotation */
-    private void registerRotationInDns(Rotation rotation, String dnsName) {
+    /** Register a CNAME record in DNS */
+    private void registerCname(String name, String targetName) {
         try {
-
-            RecordData rotationName = RecordData.fqdn(rotation.name());
-            List<Record> records = nameService.findRecords(Record.Type.CNAME, RecordName.from(dnsName));
+            RecordData data = RecordData.fqdn(targetName);
+            List<Record> records = nameService.findRecords(Record.Type.CNAME, RecordName.from(name));
             records.forEach(record -> {
-                // Ensure that the existing record points to the correct rotation
-                if ( ! record.data().equals(rotationName)) {
-                    nameService.updateRecord(record, rotationName);
-                    log.info("Updated mapping for record '" + record + "': '" + dnsName
-                             + "' -> '" + rotation.name() + "'");
+                // Ensure that the existing record points to the correct target
+                if ( ! record.data().equals(data)) {
+                    log.info("Updating mapping for record '" + record + "': '" + name
+                             + "' -> '" + data.asString() + "'");
+                    nameService.updateRecord(record, data);
                 }
             });
-
             if (records.isEmpty()) {
-                Record record = nameService.createCname(RecordName.from(dnsName), rotationName);
-                log.info("Registered mapping as record  '" + record + "'");
+                Record record = nameService.createCname(RecordName.from(name), data);
+                log.info("Registered mapping as record '" + record + "'");
             }
         } catch (RuntimeException e) {
             log.log(Level.WARNING, "Failed to register CNAME", e);
diff --git a/controller-server/src/main/java/com/yahoo/vespa/hosted/controller/Controller.java b/controller-server/src/main/java/com/yahoo/vespa/hosted/controller/Controller.java
index 6e59c384485..7754286ba9e 100644
--- a/controller-server/src/main/java/com/yahoo/vespa/hosted/controller/Controller.java
+++ b/controller-server/src/main/java/com/yahoo/vespa/hosted/controller/Controller.java
@@ -9,8 +9,7 @@ import com.yahoo.config.provision.CloudName;
 import com.yahoo.config.provision.HostName;
 import com.yahoo.config.provision.SystemName;
 import com.yahoo.vespa.curator.Lock;
-import com.yahoo.vespa.hosted.controller.api.identifiers.Property;
-import com.yahoo.vespa.hosted.controller.api.identifiers.PropertyId;
+import com.yahoo.vespa.flags.FlagSource;
 import com.yahoo.vespa.hosted.controller.api.integration.BuildService;
 import com.yahoo.vespa.hosted.controller.api.integration.MetricsService;
 import com.yahoo.vespa.hosted.controller.api.integration.RunDataStore;
@@ -76,6 +75,7 @@ public class Controller extends AbstractComponent {
     private final Chef chef;
     private final Mailer mailer;
     private final AuditLogger auditLogger;
+    private final FlagSource flagSource;
 
     /**
      * Creates a controller 
@@ -88,11 +88,11 @@ public class Controller extends AbstractComponent {
                       NameService nameService, RoutingGenerator routingGenerator, Chef chef,
                       AccessControl accessControl,
                       ArtifactRepository artifactRepository, ApplicationStore applicationStore, TesterCloud testerCloud,
-                      BuildService buildService, RunDataStore runDataStore, Mailer mailer) {
+                      BuildService buildService, RunDataStore runDataStore, Mailer mailer, FlagSource flagSource) {
         this(curator, rotationsConfig, gitHub, zoneRegistry,
              configServer, metricsService, nameService, routingGenerator, chef,
              Clock.systemUTC(), accessControl, artifactRepository, applicationStore, testerCloud,
-             buildService, runDataStore, com.yahoo.net.HostName::getLocalhost, mailer);
+             buildService, runDataStore, com.yahoo.net.HostName::getLocalhost, mailer, flagSource);
     }
 
     public Controller(CuratorDb curator, RotationsConfig rotationsConfig, GitHub gitHub,
@@ -102,7 +102,7 @@ public class Controller extends AbstractComponent {
                       AccessControl accessControl,
                       ArtifactRepository artifactRepository, ApplicationStore applicationStore, TesterCloud testerCloud,
                       BuildService buildService, RunDataStore runDataStore, Supplier<String> hostnameSupplier,
-                      Mailer mailer) {
+                      Mailer mailer, FlagSource flagSource) {
 
         this.hostnameSupplier = Objects.requireNonNull(hostnameSupplier, "HostnameSupplier cannot be null");
         this.curator = Objects.requireNonNull(curator, "Curator cannot be null");
@@ -113,6 +113,7 @@ public class Controller extends AbstractComponent {
         this.chef = Objects.requireNonNull(chef, "Chef cannot be null");
         this.clock = Objects.requireNonNull(clock, "Clock cannot be null");
         this.mailer = Objects.requireNonNull(mailer, "Mailer cannot be null");
+        this.flagSource = Objects.requireNonNull(flagSource, "FlagSource cannot be null");
 
         jobController = new JobController(this, runDataStore, Objects.requireNonNull(testerCloud));
         applicationController = new ApplicationController(this, curator, accessControl,
@@ -123,7 +124,8 @@ public class Controller extends AbstractComponent {
                                                           Objects.requireNonNull(applicationStore, "ApplicationStore cannot be null"),
                                                           Objects.requireNonNull(routingGenerator, "RoutingGenerator cannot be null"),
                                                           Objects.requireNonNull(buildService, "BuildService cannot be null"),
-                                                          clock);
+                                                          clock
+        );
         tenantController = new TenantController(this, curator, accessControl);
         auditLogger = new AuditLogger(curator, clock);
 
@@ -146,6 +148,11 @@ public class Controller extends AbstractComponent {
         return mailer;
     }
 
+    /** Provides access to the feature flags of this */
+    public FlagSource flagSource() {
+        return flagSource;
+    }
+
     public Clock clock() { return clock; }
 
     public ZoneRegistry zoneRegistry() { return zoneRegistry; }
diff --git a/controller-server/src/main/java/com/yahoo/vespa/hosted/controller/application/GlobalDnsName.java b/controller-server/src/main/java/com/yahoo/vespa/hosted/controller/application/GlobalDnsName.java
index 0254bf2fd38..ae638beed5c 100644
--- a/controller-server/src/main/java/com/yahoo/vespa/hosted/controller/application/GlobalDnsName.java
+++ b/controller-server/src/main/java/com/yahoo/vespa/hosted/controller/application/GlobalDnsName.java
@@ -9,7 +9,7 @@ import java.net.URI;
 import java.util.Objects;
 
 /**
- * Represents an application's global rotation.
+ * Represents names for an application's global rotation.
  *
  * @author mpolden
  */
diff --git a/controller-server/src/test/java/com/yahoo/vespa/hosted/controller/ControllerTest.java b/controller-server/src/test/java/com/yahoo/vespa/hosted/controller/ControllerTest.java
index 1f00d99350a..bc42b672da4 100644
--- a/controller-server/src/test/java/com/yahoo/vespa/hosted/controller/ControllerTest.java
+++ b/controller-server/src/test/java/com/yahoo/vespa/hosted/controller/ControllerTest.java
@@ -12,13 +12,14 @@ import com.yahoo.config.provision.InstanceName;
 import com.yahoo.config.provision.RegionName;
 import com.yahoo.config.provision.SystemName;
 import com.yahoo.config.provision.TenantName;
+import com.yahoo.vespa.flags.Flags;
+import com.yahoo.vespa.flags.InMemoryFlagSource;
 import com.yahoo.vespa.hosted.controller.api.application.v4.model.DeployOptions;
 import com.yahoo.vespa.hosted.controller.api.application.v4.model.EndpointStatus;
 import com.yahoo.vespa.hosted.controller.api.identifiers.DeploymentId;
 import com.yahoo.vespa.hosted.controller.api.integration.deployment.ApplicationVersion;
 import com.yahoo.vespa.hosted.controller.api.integration.deployment.SourceRevision;
 import com.yahoo.vespa.hosted.controller.api.integration.dns.Record;
-import com.yahoo.vespa.hosted.controller.api.integration.dns.RecordName;
 import com.yahoo.vespa.hosted.controller.api.integration.routing.RoutingEndpoint;
 import com.yahoo.vespa.hosted.controller.api.integration.zone.ZoneId;
 import com.yahoo.vespa.hosted.controller.application.ApplicationPackage;
@@ -281,40 +282,60 @@ public class ControllerTest {
                 .region("us-central-1") // Two deployments should result in each DNS alias being registered once
                 .build();
 
-        Function<String, Optional<Record>> findCname = (name) -> tester.controllerTester().nameService()
-                                                                       .findRecords(Record.Type.CNAME,
-                                                                                    RecordName.from(name))
-                                                                       .stream()
-                                                                       .findFirst();
-
         tester.deployCompletely(application, applicationPackage);
         assertEquals(3, tester.controllerTester().nameService().records().size());
 
-        Optional<Record> record = findCname.apply("app1--tenant1.global.vespa.yahooapis.com");
+        Optional<Record> record = tester.controllerTester().findCname("app1--tenant1.global.vespa.yahooapis.com");
         assertTrue(record.isPresent());
         assertEquals("app1--tenant1.global.vespa.yahooapis.com", record.get().name().asString());
         assertEquals("rotation-fqdn-01.", record.get().data().asString());
 
-        record = findCname.apply("app1--tenant1.global.vespa.oath.cloud");
+        record = tester.controllerTester().findCname("app1--tenant1.global.vespa.oath.cloud");
         assertTrue(record.isPresent());
         assertEquals("app1--tenant1.global.vespa.oath.cloud", record.get().name().asString());
         assertEquals("rotation-fqdn-01.", record.get().data().asString());
 
-        record = findCname.apply("app1.tenant1.global.vespa.yahooapis.com");
+        record = tester.controllerTester().findCname("app1.tenant1.global.vespa.yahooapis.com");
         assertTrue(record.isPresent());
         assertEquals("app1.tenant1.global.vespa.yahooapis.com", record.get().name().asString());
         assertEquals("rotation-fqdn-01.", record.get().data().asString());
     }
 
     @Test
-    public void testUpdatesExistingDnsAlias() {
+    public void testRedirectLegacyDnsNames() { // TODO: Remove together with Flags.REDIRECT_LEGACY_DNS_NAMES
         DeploymentTester tester = new DeploymentTester();
+        Application application = tester.createApplication("app1", "tenant1", 1, 1L);
+        ApplicationPackage applicationPackage = new ApplicationPackageBuilder()
+                .environment(Environment.prod)
+                .globalServiceId("foo")
+                .region("us-west-1")
+                .region("us-central-1")
+                .build();
+
+        ((InMemoryFlagSource) tester.controller().flagSource()).withBooleanFlag(Flags.REDIRECT_LEGACY_DNS_NAMES.id(), true);
+
+        tester.deployCompletely(application, applicationPackage);
+        assertEquals(3, tester.controllerTester().nameService().records().size());
+
+        Optional<Record> record = tester.controllerTester().findCname("app1--tenant1.global.vespa.yahooapis.com");
+        assertTrue(record.isPresent());
+        assertEquals("app1--tenant1.global.vespa.yahooapis.com", record.get().name().asString());
+        assertEquals("app1--tenant1.global.vespa.oath.cloud.", record.get().data().asString());
 
-        Function<String, Optional<Record>> findCname = (name) -> tester.controllerTester().nameService()
-                                                                       .findRecords(Record.Type.CNAME,
-                                                                                    RecordName.from(name))
-                                                                       .stream()
-                                                                       .findFirst();
+        record = tester.controllerTester().findCname("app1--tenant1.global.vespa.oath.cloud");
+        assertTrue(record.isPresent());
+        assertEquals("app1--tenant1.global.vespa.oath.cloud", record.get().name().asString());
+        assertEquals("rotation-fqdn-01.", record.get().data().asString());
+
+        record = tester.controllerTester().findCname("app1.tenant1.global.vespa.yahooapis.com");
+        assertTrue(record.isPresent());
+        assertEquals("app1.tenant1.global.vespa.yahooapis.com", record.get().name().asString());
+        assertEquals("app1--tenant1.global.vespa.oath.cloud.", record.get().data().asString());
+    }
+
+    @Test
+    public void testUpdatesExistingDnsAlias() {
+        DeploymentTester tester = new DeploymentTester();
 
         // Application 1 is deployed and deleted
         {
@@ -329,12 +350,12 @@ public class ControllerTest {
             tester.deployCompletely(app1, applicationPackage);
             assertEquals(3, tester.controllerTester().nameService().records().size());
 
-            Optional<Record> record = findCname.apply("app1--tenant1.global.vespa.yahooapis.com");
+            Optional<Record> record = tester.controllerTester().findCname("app1--tenant1.global.vespa.yahooapis.com");
             assertTrue(record.isPresent());
             assertEquals("app1--tenant1.global.vespa.yahooapis.com", record.get().name().asString());
             assertEquals("rotation-fqdn-01.", record.get().data().asString());
 
-            record = findCname.apply("app1.tenant1.global.vespa.yahooapis.com");
+            record = tester.controllerTester().findCname("app1.tenant1.global.vespa.yahooapis.com");
             assertTrue(record.isPresent());
             assertEquals("app1.tenant1.global.vespa.yahooapis.com", record.get().name().asString());
             assertEquals("rotation-fqdn-01.", record.get().data().asString());
@@ -356,13 +377,13 @@ public class ControllerTest {
             }
 
             // Records remain
-            record = findCname.apply("app1--tenant1.global.vespa.yahooapis.com");
+            record = tester.controllerTester().findCname("app1--tenant1.global.vespa.yahooapis.com");
             assertTrue(record.isPresent());
 
-            record = findCname.apply("app1--tenant1.global.vespa.oath.cloud");
+            record = tester.controllerTester().findCname("app1--tenant1.global.vespa.oath.cloud");
             assertTrue(record.isPresent());
 
-            record = findCname.apply("app1.tenant1.global.vespa.yahooapis.com");
+            record = tester.controllerTester().findCname("app1.tenant1.global.vespa.yahooapis.com");
             assertTrue(record.isPresent());
         }
 
@@ -378,17 +399,17 @@ public class ControllerTest {
             tester.deployCompletely(app2, applicationPackage);
             assertEquals(6, tester.controllerTester().nameService().records().size());
 
-            Optional<Record> record = findCname.apply("app2--tenant2.global.vespa.yahooapis.com");
+            Optional<Record> record = tester.controllerTester().findCname("app2--tenant2.global.vespa.yahooapis.com");
             assertTrue(record.isPresent());
             assertEquals("app2--tenant2.global.vespa.yahooapis.com", record.get().name().asString());
             assertEquals("rotation-fqdn-01.", record.get().data().asString());
 
-            record = findCname.apply("app2--tenant2.global.vespa.oath.cloud");
+            record = tester.controllerTester().findCname("app2--tenant2.global.vespa.oath.cloud");
             assertTrue(record.isPresent());
             assertEquals("app2--tenant2.global.vespa.oath.cloud", record.get().name().asString());
             assertEquals("rotation-fqdn-01.", record.get().data().asString());
 
-            record = findCname.apply("app2.tenant2.global.vespa.yahooapis.com");
+            record = tester.controllerTester().findCname("app2.tenant2.global.vespa.yahooapis.com");
             assertTrue(record.isPresent());
             assertEquals("app2.tenant2.global.vespa.yahooapis.com", record.get().name().asString());
             assertEquals("rotation-fqdn-01.", record.get().data().asString());
@@ -411,15 +432,15 @@ public class ControllerTest {
             // Existing DNS records are updated to point to the newly assigned rotation
             assertEquals(6, tester.controllerTester().nameService().records().size());
 
-            Optional<Record> record = findCname.apply("app1--tenant1.global.vespa.yahooapis.com");
+            Optional<Record> record = tester.controllerTester().findCname("app1--tenant1.global.vespa.yahooapis.com");
             assertTrue(record.isPresent());
             assertEquals("rotation-fqdn-02.", record.get().data().asString());
 
-            record = findCname.apply("app1--tenant1.global.vespa.oath.cloud");
+            record = tester.controllerTester().findCname("app1--tenant1.global.vespa.oath.cloud");
             assertTrue(record.isPresent());
             assertEquals("rotation-fqdn-02.", record.get().data().asString());
 
-            record = findCname.apply("app1.tenant1.global.vespa.yahooapis.com");
+            record = tester.controllerTester().findCname("app1.tenant1.global.vespa.yahooapis.com");
             assertTrue(record.isPresent());
             assertEquals("rotation-fqdn-02.", record.get().data().asString());
         }
diff --git a/controller-server/src/test/java/com/yahoo/vespa/hosted/controller/ControllerTester.java b/controller-server/src/test/java/com/yahoo/vespa/hosted/controller/ControllerTester.java
index d7845e4bfa1..c18e9c46f07 100644
--- a/controller-server/src/test/java/com/yahoo/vespa/hosted/controller/ControllerTester.java
+++ b/controller-server/src/test/java/com/yahoo/vespa/hosted/controller/ControllerTester.java
@@ -13,6 +13,7 @@ import com.yahoo.vespa.athenz.api.AthenzUser;
 import com.yahoo.vespa.athenz.api.OktaAccessToken;
 import com.yahoo.vespa.curator.Lock;
 import com.yahoo.vespa.curator.mock.MockCurator;
+import com.yahoo.vespa.flags.InMemoryFlagSource;
 import com.yahoo.vespa.hosted.controller.api.application.v4.model.DeployOptions;
 import com.yahoo.vespa.hosted.controller.api.identifiers.Property;
 import com.yahoo.vespa.hosted.controller.api.identifiers.PropertyId;
@@ -22,14 +23,15 @@ import com.yahoo.vespa.hosted.controller.api.integration.deployment.ApplicationS
 import com.yahoo.vespa.hosted.controller.api.integration.deployment.ArtifactRepository;
 import com.yahoo.vespa.hosted.controller.api.integration.deployment.JobType;
 import com.yahoo.vespa.hosted.controller.api.integration.dns.MemoryNameService;
-import com.yahoo.vespa.hosted.controller.api.integration.entity.MemoryEntityService;
+import com.yahoo.vespa.hosted.controller.api.integration.dns.Record;
+import com.yahoo.vespa.hosted.controller.api.integration.dns.RecordName;
 import com.yahoo.vespa.hosted.controller.api.integration.github.GitHubMock;
 import com.yahoo.vespa.hosted.controller.api.integration.organization.Contact;
 import com.yahoo.vespa.hosted.controller.api.integration.organization.MockContactRetriever;
 import com.yahoo.vespa.hosted.controller.api.integration.organization.MockIssueHandler;
-import com.yahoo.vespa.hosted.controller.api.integration.stubs.MockMailer;
 import com.yahoo.vespa.hosted.controller.api.integration.routing.RoutingGenerator;
 import com.yahoo.vespa.hosted.controller.api.integration.stubs.MockBuildService;
+import com.yahoo.vespa.hosted.controller.api.integration.stubs.MockMailer;
 import com.yahoo.vespa.hosted.controller.api.integration.stubs.MockRunDataStore;
 import com.yahoo.vespa.hosted.controller.api.integration.stubs.MockTesterCloud;
 import com.yahoo.vespa.hosted.controller.api.integration.zone.ZoneId;
@@ -43,11 +45,11 @@ import com.yahoo.vespa.hosted.controller.integration.ConfigServerMock;
 import com.yahoo.vespa.hosted.controller.integration.MetricsServiceMock;
 import com.yahoo.vespa.hosted.controller.integration.RoutingGeneratorMock;
 import com.yahoo.vespa.hosted.controller.integration.ZoneRegistryMock;
-import com.yahoo.vespa.hosted.controller.security.AthenzCredentials;
-import com.yahoo.vespa.hosted.controller.security.AthenzTenantSpec;
 import com.yahoo.vespa.hosted.controller.persistence.ApplicationSerializer;
 import com.yahoo.vespa.hosted.controller.persistence.CuratorDb;
 import com.yahoo.vespa.hosted.controller.persistence.MockCuratorDb;
+import com.yahoo.vespa.hosted.controller.security.AthenzCredentials;
+import com.yahoo.vespa.hosted.controller.security.AthenzTenantSpec;
 import com.yahoo.vespa.hosted.controller.security.Credentials;
 import com.yahoo.vespa.hosted.controller.tenant.AthenzTenant;
 import com.yahoo.vespa.hosted.controller.tenant.Tenant;
@@ -188,6 +190,10 @@ public final class ControllerTester {
         return contactRetriever;
     }
 
+    public Optional<Record> findCname(String name) {
+        return nameService.findRecords(Record.Type.CNAME, RecordName.from(name)).stream().findFirst();
+    }
+
     /** Create a new controller instance. Useful to verify that controller state is rebuilt from persistence */
     public final void createNewController() {
         controller = createController(curator, rotationsConfig, configServer, clock, gitHub, zoneRegistry, athenzDb,
@@ -345,7 +351,8 @@ public final class ControllerTester {
                                                buildService,
                                                new MockRunDataStore(),
                                                () -> "test-controller",
-                                               new MockMailer());
+                                               new MockMailer(),
+                                               new InMemoryFlagSource());
         // Calculate initial versions
         controller.updateVersionStatus(VersionStatus.compute(controller));
         return controller;
diff --git a/controller-server/src/test/java/com/yahoo/vespa/hosted/controller/restapi/ControllerContainerTest.java b/controller-server/src/test/java/com/yahoo/vespa/hosted/controller/restapi/ControllerContainerTest.java
index 331a6ba9ac8..3c5466f22be 100644
--- a/controller-server/src/test/java/com/yahoo/vespa/hosted/controller/restapi/ControllerContainerTest.java
+++ b/controller-server/src/test/java/com/yahoo/vespa/hosted/controller/restapi/ControllerContainerTest.java
@@ -63,6 +63,7 @@ public class ControllerContainerTest {
             "      <item>http://localhost</item>\n" +
             "    </allowedUrls>\n" +
             "  </config>\n" +
+            "  <component id='com.yahoo.vespa.flags.InMemoryFlagSource'/>\n" +
             "  <component id='com.yahoo.vespa.hosted.controller.persistence.MockCuratorDb'/>\n" +
             "  <component id='com.yahoo.vespa.hosted.controller.athenz.mock.AthenzClientFactoryMock'/>\n" +
             "  <component id='com.yahoo.vespa.hosted.controller.api.integration.chef.ChefMock'/>\n" +