io.radiowitness.kinesis.consumer.KinesisRecordConsumerFactory.java Source code

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Here is the source code for io.radiowitness.kinesis.consumer.KinesisRecordConsumerFactory.java

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/*
 * Copyright (C) 2016 An Honest Effort LLC.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package io.radiowitness.kinesis.consumer;

import com.amazonaws.services.kinesis.clientlibrary.interfaces.v2.IRecordProcessor;
import com.amazonaws.services.kinesis.clientlibrary.interfaces.v2.IRecordProcessorFactory;
import com.amazonaws.services.kinesis.clientlibrary.types.ShutdownReason;
import com.google.common.util.concurrent.FutureCallback;
import com.google.common.util.concurrent.Futures;
import com.google.common.util.concurrent.ListenableFuture;
import com.google.common.util.concurrent.SettableFuture;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public abstract class KinesisRecordConsumerFactory
        implements IRecordProcessorFactory, FutureCallback<ShutdownReason> {

    private static final Logger log = LoggerFactory.getLogger(KinesisRecordConsumerFactory.class);
    protected final SettableFuture<Void> errorFuture;

    protected KinesisRecordConsumerFactory() {
        errorFuture = SettableFuture.create();
    }

    protected abstract KinesisRecordConsumer create(SettableFuture<ShutdownReason> shutdown);

    @Override
    public IRecordProcessor createProcessor() {
        log.info("creating new record consumer");
        SettableFuture<ShutdownReason> shutdown = SettableFuture.create();
        Futures.addCallback(shutdown, this);
        return create(shutdown);
    }

    public ListenableFuture<Void> getErrorFuture() {
        return errorFuture;
    }

    @Override
    public void onFailure(Throwable throwable) {
        errorFuture.setException(throwable);
    }

    @Override
    public void onSuccess(ShutdownReason shutdownReason) {
    }

}