Add feature flag for controlling throttling of async persistence operations

Currently defaults to `UNLIMITED` throttling policy, i.e. legacy behavior.

1 files changed, 3 insertions, 0 deletions

diff --git a/configserver/src/main/java/com/yahoo/vespa/config/server/deploy/ModelContextImpl.java b/configserver/src/main/java/com/yahoo/vespa/config/server/deploy/ModelContextImpl.java
index 7d4ac948194..b32c82399f6 100644
--- a/configserver/src/main/java/com/yahoo/vespa/config/server/deploy/ModelContextImpl.java
+++ b/configserver/src/main/java/com/yahoo/vespa/config/server/deploy/ModelContextImpl.java
@@ -206,6 +206,7 @@ public class ModelContextImpl implements ModelContext {
         private final double tlsSizeFraction;
         private final List<String> ignoredHttpUserAgents;
         private final boolean enableServerOcspStapling;
+        private final String persistenceAsyncThrottling;
 
         public FeatureFlags(FlagSource source, ApplicationId appId) {
             this.defaultTermwiseLimit = flagValue(source, appId, Flags.DEFAULT_TERM_WISE_LIMIT);
@@ -250,6 +251,7 @@ public class ModelContextImpl implements ModelContext {
             this.tlsSizeFraction = flagValue(source, appId, Flags.TLS_SIZE_FRACTION);
             this.ignoredHttpUserAgents = flagValue(source, appId, PermanentFlags.IGNORED_HTTP_USER_AGENTS);
             this.enableServerOcspStapling = flagValue(source, appId, Flags.ENABLE_SERVER_OCSP_STAPLING);
+            this.persistenceAsyncThrottling = flagValue(source, appId, Flags.PERSISTENCE_ASYNC_THROTTLING);
         }
 
         @Override public double defaultTermwiseLimit() { return defaultTermwiseLimit; }
@@ -296,6 +298,7 @@ public class ModelContextImpl implements ModelContext {
         @Override public double tlsSizeFraction() { return tlsSizeFraction; }
         @Override public List<String> ignoredHttpUserAgents() { return ignoredHttpUserAgents; }
         @Override public boolean enableServerOcspStapling() { return enableServerOcspStapling; }
+        @Override public String persistenceAsyncThrottling() { return persistenceAsyncThrottling; }
 
         private static <V> V flagValue(FlagSource source, ApplicationId appId, UnboundFlag<? extends V, ?, ?> flag) {
             return flag.bindTo(source)