// 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 com.cloud.capacity;

import java.math.BigDecimal;

import com.cloud.agent.Listener;
import com.cloud.agent.api.AgentControlAnswer;
import com.cloud.agent.api.AgentControlCommand;
import com.cloud.agent.api.Answer;
import com.cloud.agent.api.Command;
import com.cloud.agent.api.StartupCommand;
import com.cloud.agent.api.StartupStorageCommand;
import com.cloud.capacity.dao.CapacityDao;
import com.cloud.exception.ConnectionException;
import com.cloud.host.Host;
import com.cloud.host.Status;
import com.cloud.storage.Storage;
import com.cloud.storage.StorageManager;

public class StorageCapacityListener implements Listener {

    CapacityDao _capacityDao;
    StorageManager _storageMgr;

    public StorageCapacityListener(CapacityDao capacityDao, StorageManager storageMgr) {
        this._capacityDao = capacityDao;
        this._storageMgr = storageMgr;
    }

    @Override
    public boolean processAnswers(long agentId, long seq, Answer[] answers) {
        return false;
    }

    @Override
    public boolean processCommands(long agentId, long seq, Command[] commands) {
        return false;
    }

    @Override
    public AgentControlAnswer processControlCommand(long agentId, AgentControlCommand cmd) {

        return null;
    }

    @Override
    public void processHostAdded(long hostId) {
    }

    @Override
    public void processConnect(Host server, StartupCommand startup, boolean forRebalance) throws ConnectionException {

        if (!(startup instanceof StartupStorageCommand)) {
            return;
        }

        StartupStorageCommand ssCmd = (StartupStorageCommand)startup;
        if (ssCmd.getResourceType() == Storage.StorageResourceType.STORAGE_HOST) {
            BigDecimal overProvFactor = BigDecimal.valueOf(CapacityManager.StorageOverprovisioningFactor.value());
            CapacityVO capacity =
                new CapacityVO(server.getId(), server.getDataCenterId(), server.getPodId(), server.getClusterId(), 0L, (overProvFactor.multiply(new BigDecimal(
                    server.getTotalSize()))).longValue(), Capacity.CAPACITY_TYPE_STORAGE_ALLOCATED);
            _capacityDao.persist(capacity);
        }

    }

    @Override
    public boolean processDisconnect(long agentId, Status state) {
        return false;
    }

    @Override
    public void processHostAboutToBeRemoved(long hostId) {
    }

    @Override
    public void processHostRemoved(long hostId, long clusterId) {
    }

    @Override
    public boolean isRecurring() {
        return false;
    }

    @Override
    public int getTimeout() {
        return 0;
    }

    @Override
    public boolean processTimeout(long agentId, long seq) {
        return false;
    }

}