org.apache.gobblin.writer.WatermarkAwareWriterWrapper.java Source code

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Here is the source code for org.apache.gobblin.writer.WatermarkAwareWriterWrapper.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.gobblin.writer;

import java.io.IOException;
import java.util.Map;

import com.google.common.base.Optional;

import org.apache.gobblin.source.extractor.CheckpointableWatermark;
import org.apache.gobblin.stream.RecordEnvelope;

/**
 * A convenience wrapper class for WatermarkAware writers.
 */
public abstract class WatermarkAwareWriterWrapper<D> extends WriterWrapper<D> implements WatermarkAwareWriter<D> {
    private Optional<WatermarkAwareWriter> watermarkAwareWriter = Optional.absent();

    public final void setWatermarkAwareWriter(WatermarkAwareWriter watermarkAwareWriter) {
        this.watermarkAwareWriter = Optional.of(watermarkAwareWriter);
    }

    public final boolean isWatermarkCapable() {
        return watermarkAwareWriter.get().isWatermarkCapable();
    }

    public void writeEnvelope(final RecordEnvelope<D> recordEnvelope) throws IOException {
        watermarkAwareWriter.get().writeEnvelope(recordEnvelope);
    }

    public final Map<String, CheckpointableWatermark> getCommittableWatermark() {
        return watermarkAwareWriter.get().getCommittableWatermark();
    }

    public Map<String, CheckpointableWatermark> getUnacknowledgedWatermark() {
        return watermarkAwareWriter.get().getUnacknowledgedWatermark();
    }

}