/*
 * 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.kms;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.apache.ranger.plugin.model.RangerService;
import org.apache.ranger.plugin.model.RangerServiceDef;
import org.apache.ranger.plugin.service.RangerBaseService;
import org.apache.ranger.plugin.service.ResourceLookupContext;
import org.apache.ranger.services.kms.client.KMSResourceMgr;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

public class RangerServiceKMS extends RangerBaseService {

	private static final Log LOG = LogFactory.getLog(RangerServiceKMS.class);
	
	public RangerServiceKMS() {
		super();
	}
	
	@Override
	public void init(RangerServiceDef serviceDef, RangerService service) {
		super.init(serviceDef, service);
	}

	@Override
	public HashMap<String,Object> validateConfig() throws Exception {
		HashMap<String, Object> ret = new HashMap<String, Object>();
		String 	serviceName  	    = getServiceName();
		if(LOG.isDebugEnabled()) {
			LOG.debug("==> RangerServiceKMS.validateConfig Service: (" + serviceName + " )");
		}
		if ( configs != null) {
			try  {
				ret = KMSResourceMgr.validateConfig(serviceName, configs);
			} catch (Exception e) {
				LOG.error("<== RangerServiceKMS.validateConfig Error:" + e);
				throw e;
			}
		}
		if(LOG.isDebugEnabled()) {
			LOG.debug("<== RangerServiceKMS.validateConfig Response : (" + ret + " )");
		}
		return ret;
	}

	@Override
	public List<String> lookupResource(ResourceLookupContext context) throws Exception {
		
		List<String> ret 		   = new ArrayList<String>();
		String 	serviceName  	   = getServiceName();
		Map<String,String> configs = getConfigs();
		if(LOG.isDebugEnabled()) {
			LOG.debug("==> RangerServiceKMS.lookupResource Context: (" + context + ")");
		}
		if (context != null) {
			try {
				ret  = KMSResourceMgr.getKMSResources(serviceName,configs,context);
			} catch (Exception e) {
			  LOG.error( "<==RangerServiceKMS.lookupResource Error : " + e);
			  throw e;
			}
		}
		if(LOG.isDebugEnabled()) {
			LOG.debug("<== RangerServiceKMS.lookupResource Response: (" + ret + ")");
		}
		return ret;
	}
}