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/*
 * SPDX-License-Identifier: Apache-2.0
 *
 * The OpenSearch Contributors require contributions made to
 * this file be licensed under the Apache-2.0 license or a
 * compatible open source license.
 */

/*
 * Licensed to Elasticsearch under one or more contributor
 * license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright
 * ownership. Elasticsearch 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.
 */
/*
 * Modifications Copyright OpenSearch Contributors. See
 * GitHub history for details.
 */

package org.opensearch.persistent;

import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;

/**
 * Components that registers all persistent task executors
 */
public class PersistentTasksExecutorRegistry {

    private final Map> taskExecutors;

    public PersistentTasksExecutorRegistry(Collection> taskExecutors) {
        Map> map = new HashMap<>();
        for (PersistentTasksExecutor executor : taskExecutors) {
            map.put(executor.getTaskName(), executor);
        }
        this.taskExecutors = Collections.unmodifiableMap(map);
    }

    @SuppressWarnings("unchecked")
    public  PersistentTasksExecutor getPersistentTaskExecutorSafe(String taskName) {
        PersistentTasksExecutor executor = (PersistentTasksExecutor) taskExecutors.get(taskName);
        if (executor == null) {
            throw new IllegalStateException("Unknown persistent executor [" + taskName + "]");
        }
        return executor;
    }
}