/*
 * Copyright 2012-2017 Red Hat, Inc.
 *
 * This file is part of Thermostat.
 *
 * Thermostat is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published
 * by the Free Software Foundation; either version 2, or (at your
 * option) any later version.
 *
 * Thermostat is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Thermostat; see the file COPYING.  If not see
 * <http://www.gnu.org/licenses/>.
 *
 * Linking this code with other modules is making a combined work
 * based on this code.  Thus, the terms and conditions of the GNU
 * General Public License cover the whole combination.
 *
 * As a special exception, the copyright holders of this code give
 * you permission to link this code with independent modules to
 * produce an executable, regardless of the license terms of these
 * independent modules, and to copy and distribute the resulting
 * executable under terms of your choice, provided that you also
 * meet, for each linked independent module, the terms and conditions
 * of the license of that module.  An independent module is a module
 * which is not derived from or based on this code.  If you modify
 * this code, you may extend this exception to your version of the
 * library, but you are not obligated to do so.  If you do not wish
 * to do so, delete this exception statement from your version.
 */

package com.redhat.thermostat.vm.numa.client.core;

import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

import com.redhat.thermostat.client.core.NameMatchingRefFilter;
import com.redhat.thermostat.client.core.controllers.InformationServiceController;
import com.redhat.thermostat.common.ApplicationService;
import com.redhat.thermostat.common.Filter;
import com.redhat.thermostat.numa.common.NumaDAO;
import com.redhat.thermostat.storage.core.AgentId;
import com.redhat.thermostat.storage.core.VmId;
import com.redhat.thermostat.storage.core.VmRef;
import com.redhat.thermostat.vm.numa.client.core.internal.VmNumaController;
import com.redhat.thermostat.vm.numa.common.Constants;
import com.redhat.thermostat.vm.numa.common.VmNumaDAO;

public class VmNumaServiceImpl implements VmNumaService {

    private static final Filter<VmRef> FILTER = new NameMatchingRefFilter<>();

    private ApplicationService appSvc;
    private VmNumaDAO vmNumaDAO;
    private VmNumaViewProvider vmNumaViewProvider;
    private NumaDAO numaDAO;
    private Map<VmRef, VmNumaController> controllers = new ConcurrentHashMap<>();

    public VmNumaServiceImpl(ApplicationService applicationService, NumaDAO numaDAO, VmNumaDAO vmNumaDAO, VmNumaViewProvider vmNumaViewProvider) {
        this.appSvc = applicationService;
        this.vmNumaDAO = vmNumaDAO;
        this.vmNumaViewProvider = vmNumaViewProvider;
        this.numaDAO = numaDAO;
    }

    @Override
    public Filter<VmRef> getFilter() {
        return FILTER;
    }

    @Override
    public InformationServiceController<VmRef> getInformationServiceController(VmRef ref) {
        VmId vmId = new VmId(ref.getVmId());
        AgentId agentId = new AgentId(ref.getHostRef().getAgentId());
        if (controllers.get(ref) == null) {
            controllers.put(ref, new VmNumaController(appSvc, numaDAO, vmNumaDAO, vmId, agentId, vmNumaViewProvider));
        }
        return controllers.get(ref);
    }

    @Override
    public int getOrderValue() {
        return Constants.ORDER;
    }
}