/**
* The contract for any PayloadStore implementation. 
* This parent abstract class will validate the initial configurations that any payload store must have, like large.message.payload.store.timeout.ms, large.message.payload.store.retry.count, large.message.payload.store.retry.max.backoff.ms and large.message.payload.store.retry.delay.backoff.ms. 
* And extract them from the provided configs. 
*/
public abstract class PayloadStore implements Configurable, Closeable {

    Integer maxRetries;
    Integer timeoutMs;
    Long maxBackoffMs;
    Long delayBackoffMs;
    protected Metrics metrics;     
    
    @Override
    public void configure(Map<String, ?> configs) {
        // configure
    }

     /**
     * Publish data into the store.
     *
     * @param data data that will be published to the store.
     * @return {@link PayloadResponse}.
     */
    public abstract PayloadResponse publish(String topic, byte[] data);

    /**
     * Download full data from the store.
     *
     * @param path id of the data's reference in the store
     * @return content of the object as bytes.
     */
    public abstract byte[] download(String path);

    /** 
    * Generate an id for the data's reference in the store. 
    * By default the id is a random UUID however some stores might need more smarter way to calculate its reference id. 
    * In such a case please override this method. 
    * @param data data that will be published to the store.
    public String id(byte[] data) {
       return UUID.randomUUID().toString();
    }
}