com.blackducksoftware.integration.hub.util.HubUrlParser.java Source code

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/*******************************************************************************
 * Copyright (C) 2016 Black Duck Software, Inc.
 * http://www.blackducksoftware.com/
 *
 * 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 com.blackducksoftware.integration.hub.util;

import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.util.UUID;

import org.apache.commons.lang3.StringUtils;

import com.blackducksoftware.integration.hub.exception.MissingUUIDException;

public class HubUrlParser {

    public static String getBaseUrl(final String url) throws URISyntaxException {
        final URI uri = new URI(url);
        final String derivedUrlPrefix = StringUtils.join(uri.getScheme(), "://", uri.getAuthority(), "/");
        return derivedUrlPrefix;
    }

    public static String getRelativeUrl(final String url) throws URISyntaxException {
        if (url == null) {
            return null;
        }
        final String baseUrl = getBaseUrl(url);
        final URI baseUri = new URI(baseUrl);
        final URI origUri = new URI(url);
        final URI relativeUri = baseUri.relativize(origUri);
        return relativeUri.toString();
    }

    // Project Url :
    // http://eng-hub-valid03.dc1.lan/api/projects/a3b48f57-9c00-453f-8672-804e08c317f2
    // Version Url :
    // http://eng-hub-valid03.dc1.lan/api/projects/a3b48f57-9c00-453f-8672-804e08c317f2/versions/7d4fdbed-936b-468f-af7f-826dfc072c5b
    // Rule URL :
    // http://eng-hub-valid03.dc1.lan/api/policy-rules/138d0d0f-45b5-4e51-8a32-42ed8946434c
    public static UUID getUUIDFromURL(final String identifier, final URL url) throws MissingUUIDException {
        if (StringUtils.isBlank(identifier)) {
            throw new IllegalArgumentException("No identifier was provided.");
        }
        if (url == null) {
            throw new IllegalArgumentException("No URL was provided to parse.");
        }
        return getUUIDFromURLString(identifier, url.toString());
    }

    public static UUID getUUIDFromURLString(final String identifier, final String url) throws MissingUUIDException {
        if (StringUtils.isBlank(identifier)) {
            throw new IllegalArgumentException("No identifier was provided.");
        }
        if (url == null) {
            throw new IllegalArgumentException("No url String was provided to parse.");
        }
        UUID uuid = null;

        final String[] urlParts = url.split("/");

        for (int i = 0; i < urlParts.length; i++) {
            if (urlParts[i].equalsIgnoreCase(identifier)) {
                try {
                    uuid = UUID.fromString(urlParts[i + 1]);
                } catch (final IllegalArgumentException e) {
                }
                break;
            }
        }

        if (uuid == null) {
            throw new MissingUUIDException("The String provided : " + url
                    + ", does not contain any UUID's for the specified identifer : " + identifier);
        }

        return uuid;
    }

}