Deleting via JFrog Bintray REST API

io.klib.bintray.Delete.java

package io.klib.bintray;

import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.ProtocolException;
import java.net.URL;
import java.util.ArrayList;
import java.util.Base64;
import java.util.List;
import java.util.Scanner;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Delete {

	private static final String BINTRAY_DOWNLOAD_URL = "https://dl.bintray.com";
	private static final String BINTRAY_SUBJECT = "/peterkir";
	private static final String BINTRAY_REPO = "/generic";

	private static final String BINTRAY_RESTAPI_URL = "https://api.bintray.com";
	private static final String BINTRAY_DELETE = "/content";

	private static final Pattern nav = Pattern.compile(".*?href=\":(.*?)\"", Pattern.MULTILINE);

	public static void main(String[] args) {
		Delete delete = new Delete();
		delete.visit("/org.eclipse.oomph/1.3.0/org.eclipse.oomph/").forEach(entry -> {
			System.out.println("deleting " + entry + " ... successful: " + delete.httpDelete(entry));
		});
		delete.visit("/org.eclipse.oomph/1.3.0/peterkir/126/").forEach(entry -> {
			System.out.println("deleting " + entry + " ... successful: " + delete.httpDelete(entry));
		});
		System.out.println("execution completed!");
	}

	/**
	 * 
	 * @param url for bintray location
	 * @return list of artifact file urls found recursively inside provided url 
	 */
	private List<String> visit(String url) {

		List<String> rv = new ArrayList<String>();
		try {
			URL dlUrl = new URL(BINTRAY_DOWNLOAD_URL + BINTRAY_SUBJECT + BINTRAY_REPO + url);
			Scanner s = new Scanner(dlUrl.openStream());
			while (s.hasNext()) {
				String next = s.next();
				Matcher m = nav.matcher(next);
				while (m.find()) {
					for (int i = 0; i < m.groupCount(); i++) {
						String match = m.group(i + 1);
						if (match.endsWith("/")) {
							rv.addAll(visit(url + match));
						} else {
							rv.add(BINTRAY_RESTAPI_URL + BINTRAY_DELETE + BINTRAY_SUBJECT + BINTRAY_REPO + "/" + url
									+ match);
						}
					}
				}
			}
		} catch (MalformedURLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return rv;
	}

	private boolean httpDelete(String entry) {
		boolean rv = false;
		try {
			URL url = new URL(entry);
			HttpURLConnection httpCon = (HttpURLConnection) url.openConnection();
			httpCon.setDoOutput(true);
			httpCon.setRequestMethod("DELETE");
			String userCredentials = "peterkir:<enter_valid_api_key>";

			String basicAuth = "Basic " + new String(Base64.getEncoder().encode(userCredentials.getBytes()));
			httpCon.setRequestProperty("Authorization", basicAuth);

			httpCon.connect();

			int rc = httpCon.getResponseCode();
			if (rc == 200) {
				rv = true;
			} else {
				System.out.println(" ... " + rc + " " + httpCon.getResponseMessage());
			}
		} catch (ProtocolException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return rv;
	}

}