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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.config.proxy.filedistribution;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.URL;
import java.nio.channels.Channels;
import java.nio.channels.ReadableByteChannel;
import java.nio.file.Files;
import java.util.Optional;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
*
* @author hmusum
*/
interface Downloader {
Optional<File> downloadFile(String url, File downloadDir) throws IOException;
default String fileName() { return "contents"; }
default boolean alreadyDownloaded(Downloader downloader, File downloadDir) {
File contents = new File(downloadDir, downloader.fileName());
return contents.exists() && contents.length() > 0;
}
}
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