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/*
* Copyright 2021 Nokia
*
* 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 org.onap.cvc.csar;
import java.util.Arrays;
import java.util.LinkedList;
import java.util.List;
public class ReleasesResolver {
public static final String SPLIT_BY_COMMA = ",";
public static final String SPECIAL_KEYWORD = "latest";
public static final int NOT_FOUND = -1;
private final String[] releaseInOrder;
private ReleasesResolver(String[] releaseInOrder) {
this.releaseInOrder = releaseInOrder;
}
public static ReleasesResolver create(String releaseInOrder) {
return new ReleasesResolver(releaseInOrder.split(SPLIT_BY_COMMA));
}
public List<String> resolveWithAncestors(String release) {
final int index = findIndexOf(release);
if (isReleaseAvailable(index)) {
throw new IllegalArgumentException(String.format("Release '%s' is not defined at the releases.order list in a vnfreqs.properties file!", release));
}
return new LinkedList<>(getElements(this.releaseInOrder, index));
}
private boolean isReleaseAvailable(int index) {
return index == NOT_FOUND;
}
private List<String> getElements(String[] elements, int index) {
return Arrays.asList(elements).subList(0, index + 1);
}
private int findIndexOf(String release) {
if (release.equals(SPECIAL_KEYWORD)) {
return getIndexOfLastElement();
}
return Arrays.asList(this.releaseInOrder).indexOf(release);
}
private int getIndexOfLastElement() {
return this.releaseInOrder.length - 1;
}
}
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