AtlasResourceMgr.java

/*
 * 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.
 */

package org.apache.ranger.services.atlas.client;

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

import org.apache.log4j.Logger;
import org.apache.ranger.plugin.service.ResourceLookupContext;

public class AtlasResourceMgr {
	private static final Logger LOG = Logger.getLogger(AtlasResourceMgr.class);

	public static Map<String, Object> validateConfig(String serviceName, Map<String, String> configs) throws Exception {

		Map<String, Object> ret = null;

		if(LOG.isDebugEnabled()) {
			LOG.debug("==> AtlasResourceMgr.validateConfig ServiceName: "+ serviceName + "Configs" + configs );
		}

		try {
			ret = AtlasClient.connectionTest(serviceName, configs);
		} catch (Exception e) {
			LOG.error("<== AtlasResourceMgr.validateConfig Error: " + e);
		  throw e;
		}

		if(LOG.isDebugEnabled()) {
			LOG.debug("<== AtlasResourceMgr.validateConfig Result : "+ ret  );
		}
		return ret;
	}

	public static List<String> getAtlasResources(String serviceName, Map<String, String> configs,
			ResourceLookupContext context) {
		String userInput = context.getUserInput();
		Map<String, List<String>> resourceMap = context.getResources();
		List<String> resultList = null;
		List<String> atlasResourceList = null;
		String atlasResourceName = null;
		String atlasResourceParameter = null;
		if (null != context) {
			atlasResourceName = context.getResourceName();
		}
		if (resourceMap != null && !resourceMap.isEmpty()) {
			atlasResourceParameter = userInput;
			atlasResourceList = resourceMap.get(atlasResourceName);
		} else {
			atlasResourceParameter = userInput;
		}

		if (configs == null || configs.isEmpty()) {
			LOG.error("Connection Config is empty");
		} else {
			resultList = getAtlasResource(serviceName, configs, atlasResourceName, atlasResourceParameter,
					atlasResourceList);
		}
		return resultList;
	}

	public static List<String> getAtlasResource(String serviceName, Map<String, String> configs,
			String atlasResourceName, String atlasResourceParameter, List<String> atlasResourceList) {
		final AtlasClient atlasClient = AtlasConnectionMgr.getAtlasClient(serviceName, configs);
		List<String> resourceList = null;
		if (atlasClient != null) {
			synchronized (atlasClient) {
				resourceList = atlasClient.getResourceList(atlasResourceName, atlasResourceParameter, atlasResourceList);
			}
		}
		return resourceList;
	}
}