/*
 * Copyright Red Hat, Inc. and/or its affiliates
 * and other contributors as indicated by the @author tags and
 * the COPYRIGHT.txt file distributed with this work.
 *
 * Licensed 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.teiid.runtime;

import org.teiid.adminapi.Admin;
import org.teiid.adminapi.impl.EngineStatisticsMetadata;
import org.teiid.dqp.internal.process.DQPCore;
import org.teiid.services.BufferServiceImpl;

public class EmbeddedAdminFactory {
	
	private static EmbeddedAdminFactory INSTANCE = new EmbeddedAdminFactory();
	
	public static EmbeddedAdminFactory getInstance() {
		return INSTANCE;
	}
	
	public static EngineStatisticsMetadata createEngineStats(
			int activeSessionsCount, BufferServiceImpl bufferService,
			DQPCore dqp) {
		EngineStatisticsMetadata stats = new EngineStatisticsMetadata();
		stats.setSessionCount(activeSessionsCount);
		stats.setTotalMemoryUsedInKB(bufferService.getHeapCacheMemoryInUseKB());
		stats.setMemoryUsedByActivePlansInKB(bufferService.getHeapMemoryInUseByActivePlansKB());
		stats.setDiskWriteCount(bufferService.getDiskWriteCount());
		stats.setDiskReadCount(bufferService.getDiskReadCount());
		stats.setCacheReadCount(bufferService.getCacheReadCount());
		stats.setCacheWriteCount(bufferService.getCacheWriteCount());
		stats.setDiskSpaceUsedInMB(bufferService.getUsedDiskBufferSpaceMB());
		stats.setActivePlanCount(dqp.getActivePlanCount());
		stats.setWaitPlanCount(dqp.getWaitingPlanCount());
		stats.setMaxWaitPlanWaterMark(dqp.getMaxWaitingPlanWatermark());
		return stats;
	}

	public Admin createAdmin(EmbeddedServer embeddedServer) {
		return new EmbeddedAdminImpl(embeddedServer);
	}

}
