Hey there I have a question regarding a problem we face with an enum in our build logic. We have this FeatureFlag enum in our build:

package org.elasticsearch.test.cluster;

import org.elasticsearch.test.cluster.util.Version;

/**
 * Elasticsearch feature flags. Used in conjunction with {@link org.elasticsearch.test.cluster.local.LocalSpecBuilder#feature(FeatureFlag)}
 * to indicate that this feature is required and should be enabled when appropriate.
 */
public enum FeatureFlag {
    TIME_SERIES_MODE("es.index_mode_feature_flag_registered=true", Version.fromString("8.0.0"), null),
    FAILURE_STORE_ENABLED("es.failure_store_feature_flag_enabled=true", Version.fromString("8.12.0"), null),
    SEMANTIC_TEXT_ENABLED("es.semantic_text_feature_flag_enabled=true", Version.fromString("8.15.0"), null);

    public final String systemProperty;
    public final Version from;
    public final Version until;

    FeatureFlag(String systemProperty, Version from, Version until) {
        this.systemProperty = systemProperty;
        this.from = from;
        this.until = until;
    }
}

when building with configuration-cache enabled I see this error message:

at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:64)
        at org.gradle.internal.concurrent.AbstractManagedExecutor$1.run(AbstractManagedExecutor.java:47)
Caused by: java.lang.IllegalStateException: Failed to create instance of org.elasticsearch.gradle.testclusters.ElasticsearchNode$FeatureFlag with args [es.index_mode_feature_flag_registered, 8.0.0, null]
        at org.gradle.configurationcache.serialization.codecs.JavaRecordCodec.decode(JavaRecordCodec.kt:47)
        at org.gradle.configurationcache.serialization.codecs.JavaRecordCodec$decode$1.invokeSuspend(JavaRecordCodec.kt)
        ... 163 more
Caused by: java.lang.NoSuchMethodException: org.elasticsearch.gradle.testclusters.ElasticsearchNode$FeatureFlag.<init>(java.lang.String,org.elasticsearch.gradle.Version,org.elasticsearch.gradle.Version)
        at org.gradle.configurationcache.serialization.codecs.JavaRecordCodec.decode(JavaRecordCodec.kt:45)
        ... 164 more

It seems like a general serialisation issue with gradle. Is there anyting we can do from our side to work around / fix this issue?

Interesting. Can you have a look at the

class

file of

FeatureFlag

? Are `enum`s now compiled to be subclasses of

java.lang.Record

? Because the

JavaRecordCodec

should only be used if that is the case.

ah I'm looking at the wrong FeatureFlag class 😄

🤣