add feature flag to override log file compression

1 files changed, 9 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 c49e79f8698..3eae91ee5b9 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
@@ -208,6 +208,7 @@ public class ModelContextImpl implements ModelContext {
         private final boolean enableBitVectors;
         private final Architecture adminClusterArchitecture;
         private final boolean enableProxyProtocolMixedMode;
+        private final String logFileCompressionAlgorithm;
 
         public FeatureFlags(FlagSource source, ApplicationId appId, Version version) {
             this.defaultTermwiseLimit = flagValue(source, appId, version, Flags.DEFAULT_TERM_WISE_LIMIT);
@@ -252,6 +253,7 @@ public class ModelContextImpl implements ModelContext {
             this.enableBitVectors = flagValue(source, appId, version, Flags.ENABLE_BIT_VECTORS);
             this.adminClusterArchitecture = Architecture.valueOf(flagValue(source, appId, version, PermanentFlags.ADMIN_CLUSTER_NODE_ARCHITECTURE));
             this.enableProxyProtocolMixedMode = flagValue(source, appId, version, Flags.ENABLE_PROXY_PROTOCOL_MIXED_MODE);
+            this.logFileCompressionAlgorithm = flagValue(source, appId, version, Flags.LOG_FILE_COMPRESSION_ALGORITHM);
         }
 
         @Override public double defaultTermwiseLimit() { return defaultTermwiseLimit; }
@@ -298,6 +300,13 @@ public class ModelContextImpl implements ModelContext {
         @Override public boolean enableBitVectors() { return this.enableBitVectors; }
         @Override public Architecture adminClusterArchitecture() { return adminClusterArchitecture; }
         @Override public boolean enableProxyProtocolMixedMode() { return enableProxyProtocolMixedMode; }
+        @Override public String logFileCompressionAlgorithm(String defVal) {
+            var fflag = this.logFileCompressionAlgorithm;
+            if (fflag != null && ! fflag.equals("")) {
+                return fflag;
+            }
+            return defVal;
+        }
 
         private static <V> V flagValue(FlagSource source, ApplicationId appId, Version vespaVersion, UnboundFlag<? extends V, ?, ?> flag) {
             return flag.bindTo(source)