java source code of DiscoveryUtils

/**
 * Copyright (c) 2015 the original author or authors
 *
 * 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.jmnarloch.spring.cloud.ribbon;

import com.netflix.appinfo.InstanceInfo;
import com.netflix.loadbalancer.Server;
import com.netflix.niws.loadbalancer.DiscoveryEnabledServer;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;

/**
 * An utility class used for testing purpose.
 *
 * @author Jakub Narloch
 */
public final class DiscoveryUtils {

    private DiscoveryUtils() {

    }

    @SuppressWarnings("unchecked")
    public static <T extends Server> List<T> servers(InstanceInfo... instanceInfos) {
        final List<T> result = new ArrayList<>();
        for (InstanceInfo info : instanceInfos) {
            result.add((T) new DiscoveryEnabledServer(info, false));
        }
        return result;
    }

    public static InstanceInfo createInstanceInfo(String appName, Map<String, String> metadata) {
        return InstanceInfo.Builder.newBuilder()
                .setAppName(appName)
                .setMetadata(metadata).build();
    }
}