cn.ponfee.disjob.registry.WorkerRegistry Maven / Gradle / Ivy

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/*
 * Copyright 2022-2024 Ponfee (http://www.ponfee.cn/)
 *
 * 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
 *
 *     https://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 cn.ponfee.disjob.registry;

import cn.ponfee.disjob.core.base.Supervisor;
import cn.ponfee.disjob.core.base.Worker;
import com.google.common.collect.ImmutableList;
import org.apache.commons.collections4.CollectionUtils;

import java.util.Collections;
import java.util.List;

/**
 * Worker registry and discovery supervisor.
 *
 * @author Ponfee
 */
public interface WorkerRegistry extends Registry, Discovery {

    /**
     * Gets registered workers of group
     *
     * @param group the group
     * @return worker list of group
     */
    default List getRegisteredWorkers(String group) {
        List workers = getRegisteredServers();
        if (CollectionUtils.isEmpty(workers)) {
            return Collections.emptyList();
        }
        return workers.stream()
            .filter(e -> e.getGroup().equals(group))
            .sorted()
            .collect(ImmutableList.toImmutableList());
    }

}