/*
 * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
 * or more contributor license agreements. Licensed under the "Elastic License
 * 2.0", the "GNU Affero General Public License v3.0 only", and the "Server Side
 * Public License v 1"; you may not use this file except in compliance with, at
 * your election, the "Elastic License 2.0", the "GNU Affero General Public
 * License v3.0 only", or the "Server Side Public License, v 1".
 */

package org.elasticsearch.ingest;

import org.elasticsearch.cluster.metadata.ProjectId;

import java.util.Map;

/**
 * Drop processor only returns {@code null} for the execution result to indicate that any document
 * executed by it should not be indexed.
 */
public final class DropProcessor extends AbstractProcessor {

    public static final String TYPE = "drop";

    private DropProcessor(final String tag, final String description) {
        super(tag, description);
    }

    @Override
    public IngestDocument execute(final IngestDocument ingestDocument) throws Exception {
        return null;
    }

    @Override
    public String getType() {
        return TYPE;
    }

    public static final class Factory implements Processor.Factory {

        @Override
        public Processor create(
            final Map<String, Processor.Factory> processorFactories,
            final String tag,
            final String description,
            final Map<String, Object> config,
            final ProjectId projectId
        ) {
            return new DropProcessor(tag, description);
        }
    }
}