RepositoryInitializer for disabling a given index

CustomIndexInitializer.java

import static com.google.common.collect.Sets.newHashSet;
import static org.apache.jackrabbit.oak.plugins.index.IndexConstants.INDEX_DEFINITIONS_NAME;
import static org.apache.jackrabbit.oak.plugins.index.IndexConstants.TYPE_PROPERTY_NAME;

import java.util.Set;

import org.apache.jackrabbit.oak.spi.lifecycle.RepositoryInitializer;
import org.apache.jackrabbit.oak.spi.state.NodeBuilder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class CustomIndexInitializer implements RepositoryInitializer {
    private final Logger log = LoggerFactory.getLogger(getClass());

    public void initialize(NodeBuilder builder) {
        log.info("Custom initializer invoked");
        if (builder.hasChildNode(INDEX_DEFINITIONS_NAME)) {
            NodeBuilder index = builder.child(INDEX_DEFINITIONS_NAME);

            Set<String> disabled = newHashSet("index-node-name");
            for (String i : disabled) {
                log.info("disabling {}", i);
                disableIndex(index, i);
            }
        }
    }

    private static void disableIndex(NodeBuilder index, String indexName) {
        if (index.hasChildNode(indexName)) {
            index.child(indexName).setProperty(TYPE_PROPERTY_NAME, "disabled");
        }
    }
}