com.huawei.openstack4j.openstack.common.functions.GetRootOfURL Maven / Gradle / Ivy
/*******************************************************************************
* Copyright 2017 HuaWei and OTC tld
*
* 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 java.net.MalformedURLException;
import java.net.URL;
import com.google.common.base.Function;
import com.huawei.openstack4j.api.exceptions.OS4JException;
/**
*/
public class GetRootOfURL implements Function {
public static GetRootOfURL instance() {
return new GetRootOfURL();
}
@Override
public String apply(String input) {
try {
URL url = new URL(input);
String authority = url.getAuthority();
return input.substring(0, input.indexOf(authority) + authority.length());
} catch (MalformedURLException e) {
throw new OS4JException(String.format("endpoint `%s` is not a valid URL", input), e);
}
}
public static void main(String[] args) {
String apply = GetRootOfURL.instance().apply("http://www.baidu.com:10000/");
System.out.println(apply);
}
}