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Collection of dummy jobs for Apache Flink

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/*
 * This file is part of Flink Dummies
 * https://github.com/nextbreakpoint/flink-dummies
 */
package com.nextbreakpoint.flink.dummies;

import lombok.extern.slf4j.Slf4j;
import org.apache.flink.api.common.SupportsConcurrentExecutionAttempts;
import org.apache.flink.api.connector.sink2.Sink;
import org.apache.flink.api.connector.sink2.SinkWriter;
import org.apache.flink.api.connector.sink2.WriterInitContext;

@Slf4j
public class LoggingSink implements Sink, SupportsConcurrentExecutionAttempts {
    private static final long serialVersionUID = 1L;

    public SinkWriter createWriter(InitContext context) {
        return new LoggingElementWriter();
    }

    public SinkWriter createWriter(WriterInitContext context) {
        return new LoggingElementWriter();
    }

    private class LoggingElementWriter implements SinkWriter {
        @Override
        public void write(T element, Context context) {
            log.info(element.toString());
        }

        @Override
        public void flush(boolean endOfInput) {
            // this writer has no pending data.
        }

        @Override
        public void close() {
            // do nothing.
        }
    }
}