archiva/archiva-modules/archiva-base/archiva-repository-api/src/main/java/org/apache/archiva/indexer/IndexManagerFactory.java

package org.apache.archiva.indexer;

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 */

import org.apache.archiva.repository.RepositoryType;
import org.apache.archiva.repository.UnsupportedRepositoryTypeException;
import org.springframework.context.ApplicationContext;
import org.springframework.stereotype.Service;

import javax.inject.Inject;
import java.util.HashMap;
import java.util.Map;

/**
 * This factory is used to get a index manager for a certain repository type.
 */
@Service("indexerManagerFactory")
public class IndexManagerFactory {

    Map<RepositoryType, ArchivaIndexManager> managers= new HashMap<>();

    @Inject
    ApplicationContext applicationContext;

    public ArchivaIndexManager getIndexManager(RepositoryType type) {
        if (managers.containsKey(type)) {
            return managers.get(type);
        } else {
            ArchivaIndexManager manager = applicationContext.getBeansOfType(ArchivaIndexManager.class).values().stream().
                    filter(m -> m.supportsRepository(type)).
                    findFirst().orElseThrow(() -> new UnsupportedRepositoryTypeException(type));
            managers.put(type, manager);
            return manager;
        }
    }
}