make hashed dns name from application id

1 files changed, 8 insertions, 0 deletions

diff --git a/controller-server/src/main/java/com/yahoo/vespa/hosted/controller/application/Endpoint.java b/controller-server/src/main/java/com/yahoo/vespa/hosted/controller/application/Endpoint.java
index ef1ce19b167..e3a79693428 100644
--- a/controller-server/src/main/java/com/yahoo/vespa/hosted/controller/application/Endpoint.java
+++ b/controller-server/src/main/java/com/yahoo/vespa/hosted/controller/application/Endpoint.java
@@ -1,12 +1,14 @@
 // Copyright 2019 Oath Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
 package com.yahoo.vespa.hosted.controller.application;
 
+import com.google.common.hash.Hashing;
 import com.yahoo.config.provision.ApplicationId;
 import com.yahoo.config.provision.ClusterSpec;
 import com.yahoo.config.provision.SystemName;
 import com.yahoo.config.provision.zone.ZoneId;
 
 import java.net.URI;
+import java.nio.charset.Charset;
 import java.util.Objects;
 
 /**
@@ -212,6 +214,12 @@ public class Endpoint {
 
     }
 
+    /** Create a DNS name based on a hash of the ApplicationId. This should always be < 64 characters long. */
+    public static String createHashedCn(ApplicationId application, SystemName system) {
+        var appIdHash = Hashing.farmHashFingerprint64().hashString(application.serializedForm(), Charset.defaultCharset()).toString();
+        return appIdHash + dnsSuffix(system, false);
+    }
+
     /** Build an endpoint for given application */
     public static EndpointBuilder of(ApplicationId application) {
         return new EndpointBuilder(application);