RangerHiveAuthorizerProvider.java

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// to you under the Apache License, Version 2.0 (the
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//
//   http://www.apache.org/licenses/LICENSE-2.0
//
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package org.apache.doris.catalog.authorizer.ranger.hive;

import java.util.Map;

public class RangerHiveAuthorizerProvider {

    private static volatile Map<String, RangerHivePlugin> hivePluginMap = null;

    /**
     * if some catalogs use a same ranger hive service, make them share the same authorizer plugin
     *
     * @param serviceUrl url of ranger admin
     * @param serviceName name of hive service in ranger admin
     * @return
     */
    public static RangerHivePlugin getHivePlugin(String serviceUrl, String serviceName) {
        String id = serviceUrl + serviceName;

        if (!hivePluginMap.containsKey(id)) {
            synchronized (RangerHiveAuthorizerProvider.class) {
                if (!hivePluginMap.containsKey(id)) {
                    RangerHivePlugin plugin = new RangerHivePlugin(serviceUrl + serviceName);
                    plugin.init();

                    hivePluginMap.put(id, plugin);
                }
            }
        }

        return hivePluginMap.get(id);
    }
}