com.huawei.openstack4j.openstack.common.functions.RemoveVersionFromURL Maven / Gradle / Ivy
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/*******************************************************************************
* Copyright 2016 ContainX and OpenStack4j
*
* Licensed 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.huawei.openstack4j.openstack.common.functions;
import static com.huawei.openstack4j.core.transport.ClientConstants.*;
import com.google.common.base.Function;
/**
* A function that removes the API version from the tail end of a URL as well as any trailing "/".
*
* https://vcloud.test.com:2323/v2.0 would return https://vcloud.test.com:2323
* http://someurl:2321/ would return http://someurl:2321
*
* NOTE: This only removes the tail end of the path if it contains a version
*
* @author Jeremy Unruh
*/
public class RemoveVersionFromURL implements Function {
public static final String VERSION_REGEX = "/v[0-9]+(\\.[0-9])*";
public static final RemoveVersionFromURL INSTANCE = new RemoveVersionFromURL();
@Override
public String apply(String url) {
String result = url.replaceFirst(VERSION_REGEX, "");
if (result.endsWith(URI_SEP))
return result.substring(0, result.length() - 1);
return result;
}
public String removeAndApply(String url, String version) {
if (url == null)
return url;
return apply(url).concat(version);
}
}