io.fabric8.kubernetes.model.util.Helper Maven / Gradle / Ivy
/**
* Copyright (C) 2015 Red Hat, Inc.
*
* 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 io.fabric8.kubernetes.model.util;
import io.fabric8.kubernetes.model.annotation.ApiGroup;
import io.fabric8.kubernetes.model.annotation.ApiVersion;
import java.io.IOException;
import java.io.InputStream;
import java.lang.annotation.Annotation;
import java.util.Arrays;
import java.util.Scanner;
public class Helper {
public static String loadJson(String path) {
try (InputStream resourceAsStream = Helper.class.getResourceAsStream(path)) {
final Scanner scanner = new Scanner(resourceAsStream).useDelimiter("\\A");
return scanner.hasNext() ? scanner.next() : "";
} catch (IOException e) {
throw new RuntimeException(e);
}
}
public static String getAnnotationValue(Class kubernetesResourceType, Class annotationClass) {
Annotation annotation = getAnnotation(kubernetesResourceType, annotationClass);
if (annotation instanceof ApiGroup) {
return ((ApiGroup) annotation).value();
} else if (annotation instanceof ApiVersion) {
return ((ApiVersion) annotation).value();
}
return null;
}
private static Annotation getAnnotation(Class kubernetesResourceType, Class annotationClass) {
return Arrays.stream(kubernetesResourceType.getAnnotations())
.filter(annotation -> annotation.annotationType().equals(annotationClass))
.findFirst()
.orElse(null);
}
}