Create singleton CloudNames for known clouds

1 files changed, 11 insertions, 6 deletions

diff --git a/config-provisioning/src/main/java/com/yahoo/config/provision/CloudName.java b/config-provisioning/src/main/java/com/yahoo/config/provision/CloudName.java
index ba262136abe..e1d7afdc9f0 100644
--- a/config-provisioning/src/main/java/com/yahoo/config/provision/CloudName.java
+++ b/config-provisioning/src/main/java/com/yahoo/config/provision/CloudName.java
@@ -3,7 +3,6 @@ package com.yahoo.config.provision;
 
 import ai.vespa.validation.PatternedStringWrapper;
 
-import java.util.Objects;
 import java.util.regex.Pattern;
 
 /**
@@ -14,17 +13,23 @@ import java.util.regex.Pattern;
 public class CloudName extends PatternedStringWrapper<CloudName> {
 
     private static final Pattern pattern = Pattern.compile("[a-z]([a-z0-9-]*[a-z0-9])*");
-    public static final CloudName AWS = from("aws");
-    public static final CloudName GCP = from("gcp");
-    public static final CloudName DEFAULT = from("default");
-    public static final CloudName YAHOO = from("yahoo");
+    public static final CloudName AWS = new CloudName("aws");
+    public static final CloudName GCP = new CloudName("gcp");
+    public static final CloudName DEFAULT = new CloudName("default");
+    public static final CloudName YAHOO = new CloudName("yahoo");
 
     private CloudName(String cloud) {
         super(cloud, pattern, "cloud name");
     }
 
     public static CloudName from(String cloud) {
-        return new CloudName(cloud);
+        return switch (cloud) {
+            case "aws" -> AWS;
+            case "gcp" -> GCP;
+            case "default" -> DEFAULT;
+            case "yahoo" -> YAHOO;
+            default -> new CloudName(cloud);
+        };
     }
 
 }