Quotas in the configuration server (#14088)

* Create a quota JSON encoded parameter

* Propagate quota from PrepareParams to ModelContext.Properties

* Persist quota and read it back

* Check maxClusterSize quota in Validator step

* Default to Quota.empty() in TestProperties

* Javadoc and authors

* Fix parameter type after it was changed on master

Co-authored-by: Andreas Eriksen <andreer@verizonmedia.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/vespajlib/src/main/java/com/yahoo/slime/SlimeUtils.java b/vespajlib/src/main/java/com/yahoo/slime/SlimeUtils.java
index 5084e6554cb..51a4fc167c7 100644
--- a/vespajlib/src/main/java/com/yahoo/slime/SlimeUtils.java
+++ b/vespajlib/src/main/java/com/yahoo/slime/SlimeUtils.java
@@ -124,6 +124,13 @@ public class SlimeUtils {
         return Optional.of(inspector.asString()).filter(s -> !s.isEmpty());
     }
 
+    public static Optional<Long> optionalLong(Inspector inspector) {
+        if (inspector.type() == Type.LONG) {
+            return Optional.of(inspector.asLong());
+        }
+        return Optional.empty();
+    }
+
     public static Iterator<Inspector> entriesIterator(Inspector inspector) {
         return new Iterator<>() {
             private int current = 0;