agents-common/src/main/java/org/apache/ranger/plugin/policyengine/RangerPluginContext.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.plugin.policyengine;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.ranger.authorization.hadoop.config.RangerPluginConfig;
import org.apache.ranger.authorization.utils.StringUtil;
import org.apache.ranger.plugin.service.RangerAuthContext;
import org.apache.ranger.plugin.service.RangerBasePlugin;

public class RangerPluginContext {
	private static final Log LOG = LogFactory.getLog(RangerBasePlugin.class);

	private final RangerPluginConfig config;
	private final String             clusterName;
	private final String             clusterType;
	private       RangerAuthContext  authContext;

	public RangerPluginContext(String serviceType) {
		this(serviceType, new RangerPluginConfig(serviceType));
	}

	public RangerPluginContext(String serviceType, String clusterName, String clusterType) {
		this.config      = new RangerPluginConfig(serviceType);
		this.clusterName = clusterName;
		this.clusterType = clusterType;
	}

	public RangerPluginContext(String serviceType, RangerPluginConfig config) {
		this.config      = config;
		this.clusterName = findClusterName(config, serviceType);
		this.clusterType = findClusterType(config, serviceType);
	}

	public RangerPluginConfig getConfig() { return  config; }

	public String getClusterName() {
		return clusterName;
	}

	public String getClusterType() {
		return clusterType;
	}

	public RangerAuthContext getAuthContext() { return authContext; }

	public void setAuthContext(RangerAuthContext authContext) { this.authContext = authContext; }

	private static String findClusterName(RangerPluginConfig config, String serviceType) {
		if (LOG.isDebugEnabled()) {
			LOG.debug("==> RangerPluginContext.findClusterName(serviceType=" + serviceType + ")");
		}

		String propertyPrefix = "ranger.plugin." + serviceType;
		String clusterName    = config.get(propertyPrefix + ".access.cluster.name", "");

		if (StringUtil.isEmpty(clusterName)){
			clusterName = config.get(propertyPrefix + ".ambari.cluster.name", "");
		}

		if (LOG.isDebugEnabled()) {
			LOG.debug("<== RangerPluginContext.findClusterName(serviceType=" + serviceType + "): ret=" + clusterName);
		}

		return clusterName;
	}

	private static String findClusterType(RangerPluginConfig config, String serviceType) {
		if (LOG.isDebugEnabled()) {
			LOG.debug("==> RangerPluginContext.findClusterType(serviceType=" + serviceType + ")");
		}

		String propertyPrefix = "ranger.plugin." + serviceType;
		String clusterType    = config.get(propertyPrefix + ".access.cluster.type", "");

		if (StringUtil.isEmpty(clusterType)){
			clusterType = config.get(propertyPrefix + ".ambari.cluster.type", "");
		}

		if (LOG.isDebugEnabled()) {
			LOG.debug("<== RangerPluginContext.findClusterType(serviceType=" + serviceType + "): ret=" + clusterType);
		}

		return clusterType;
	}

}