com.persistent.cloudninja.scheduler.TenantDBSizeProcessor.java Source code

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Here is the source code for com.persistent.cloudninja.scheduler.TenantDBSizeProcessor.java

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/*******************************************************************************
 * Copyright 2012 Persistent Systems Ltd.
 * 
 * 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 com.persistent.cloudninja.scheduler;

import java.net.URISyntaxException;
import java.security.InvalidKeyException;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.TimeZone;

import org.apache.log4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.util.StopWatch;

import com.microsoft.windowsazure.services.core.storage.StorageException;
import com.persistent.cloudninja.dao.MeteringDao;
import com.persistent.cloudninja.dao.PartitionStatsAndBWUsageDao;
import com.persistent.cloudninja.dao.TaskCompletionDao;
import com.persistent.cloudninja.domainobject.MeteringEntity;
import com.persistent.cloudninja.utils.SchedulerSettings;
import com.persistent.cloudninja.utils.StorageClientUtility;

/**
 * Processor for tenant DB size calculation task. It processes the
 * messages generated by generator.
 */
@Component
public class TenantDBSizeProcessor extends TaskActivityBase {

    @Autowired
    private TaskCompletionDao taskCompletionDao;

    private static final Logger LOGGER = Logger.getLogger(TenantDBSizeProcessor.class);

    @Autowired
    private MeteringDao meteringDao;

    @Autowired
    private PartitionStatsAndBWUsageDao partitionStatsAndBWUsageDao;

    public TenantDBSizeProcessor() throws InvalidKeyException, URISyntaxException {
        //tenantdbsizequeue which is shared between processor and generator.
        super(new TenantDBSizeQueue(SchedulerSettings.DatabaseSizeQueue,
                StorageClientUtility.getCloudStorageAccount().createCloudQueueClient()));
    }

    /** 
     * Calculates DB size of tenant DB.
     */
    @Override
    public boolean execute() {

        boolean retVal = true;
        String tenantId = null;
        try {

            LOGGER.debug("In Processor");
            long dbSize = 0;
            TenantDBSizeQueue queue = (TenantDBSizeQueue) getWorkQueue();
            tenantId = queue.dequeue(SchedulerSettings.MessageVisibilityTimeout);
            if (tenantId == null) {
                retVal = false;
                LOGGER.debug("Processor : msg is null");
            } else {
                StopWatch watch = new StopWatch();
                watch.start();
                LOGGER.debug("Processor : msg is " + tenantId);
                dbSize = partitionStatsAndBWUsageDao.getDBSize(tenantId);
                MeteringEntity metering = new MeteringEntity();
                metering.setTenantId(tenantId);

                Calendar calendar = Calendar.getInstance();
                SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.S z");
                dateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
                String date = dateFormat.format(calendar.getTime());
                metering.setSnapshotTime(dateFormat.parse(date));

                metering.setDatabaseSize(dbSize);
                meteringDao.add(metering);
                LOGGER.info("Processor : dbSize is " + dbSize);
                watch.stop();
                taskCompletionDao.updateTaskCompletionDetails(watch.getTotalTimeSeconds(),
                        "ProcessMeteringTenantDatabaseSize",
                        "Measured " + dbSize + " for tenant " + tenantId + " database");
            }
        } catch (StorageException e) {
            retVal = false;
            LOGGER.error(e.getMessage(), e);
        } catch (ParseException e) {
            retVal = false;
            LOGGER.error(e.getMessage(), e);
        }
        return retVal;
    }

}