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Log4j2 Appender plugin pushing logs in batches to Elasticsearch (2.x/5.x/6.x) clusters

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package org.appenders.log4j2.elasticsearch.jest;

/*-
 * #%L
 * %%
 * Copyright (C) 2017 Rafal Foltynski
 * %%
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 * #L%
 */


import org.appenders.log4j2.elasticsearch.BatchEmitterFactory;
import org.appenders.log4j2.elasticsearch.BulkEmitter;
import org.appenders.log4j2.elasticsearch.ClientObjectFactory;
import org.appenders.log4j2.elasticsearch.FailoverPolicy;

public class BulkEmitterFactory implements BatchEmitterFactory {

    @Override
    public boolean accepts(Class clientObjectFactoryClass) {
        return JestHttpObjectFactory.class.isAssignableFrom(clientObjectFactoryClass);
    }

    @Override
    public BulkEmitter createInstance(int batchSize, int deliveryInterval, ClientObjectFactory clientObjectFactory, FailoverPolicy failoverPolicy) {
        BulkEmitter bulkEmitter = new BulkEmitter(batchSize, deliveryInterval, clientObjectFactory.createBatchOperations());
        bulkEmitter.addListener(clientObjectFactory.createBatchListener(failoverPolicy));
        return bulkEmitter;
    }

}