io.fabric8.kubeapitest.junit.Fabric8ClientInjectionHandler 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.kubeapitest.junit;
import io.fabric8.kubeapitest.KubeAPIServer;
import io.fabric8.kubeapitest.KubeAPITestException;
import io.fabric8.kubernetes.client.Config;
import io.fabric8.kubernetes.client.KubernetesClient;
import io.fabric8.kubernetes.client.KubernetesClientBuilder;
import org.junit.jupiter.api.extension.ExtensionContext;
import java.lang.reflect.Field;
import java.util.Arrays;
import java.util.Optional;
import java.util.stream.Collectors;
public class Fabric8ClientInjectionHandler implements ClientInjectionHandler {
private KubernetesClient client;
public boolean isTargetFieldAvailable(ExtensionContext extensionContext,
boolean staticField) {
return getFieldForKubeClientInjection(extensionContext, staticField).isPresent();
}
@Override
public void inject(ExtensionContext extensionContext,
boolean staticField, KubeAPIServer kubeApiServer) {
var field = getFieldForKubeClientInjection(extensionContext, staticField).orElseThrow();
setKubernetesClientToField(extensionContext, field, kubeApiServer);
}
private void setKubernetesClientToField(ExtensionContext extensionContext,
Field kubeClientField, KubeAPIServer kubeApiServer) {
try {
var target = extensionContext.getTestInstance()
.orElseGet(() -> extensionContext.getTestClass().orElseThrow());
client = new KubernetesClientBuilder()
.withConfig(Config.fromKubeconfig(kubeApiServer.getKubeConfigYaml())).build();
kubeClientField.setAccessible(true);
kubeClientField.set(target, client);
} catch (IllegalAccessException e) {
throw new KubeAPITestException(e);
}
}
@Override
public void cleanup(ExtensionContext extensionContext) {
if (client != null) {
client.close();
}
}
public static Optional getFieldForKubeClientInjection(ExtensionContext extensionContext,
boolean staticField) {
Class clazz = extensionContext.getTestClass().orElseThrow();
var kubeConfigFields = Arrays.stream(clazz.getDeclaredFields())
.filter(f -> KubernetesClient.class.isAssignableFrom(f.getType()))
.collect(Collectors.toList());
if (kubeConfigFields.isEmpty()) {
return Optional.empty();
}
if (kubeConfigFields.size() > 1) {
throw new KubeAPITestException(
"More fields type KubernetesClient found");
}
var field = kubeConfigFields.get(0);
if (java.lang.reflect.Modifier.isStatic(field.getModifiers()) != staticField) {
return Optional.empty();
} else {
return Optional.of(field);
}
}
}