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

Introduction

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

Source

/*******************************************************************************
 * 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.SimpleDateFormat;
import java.util.Calendar;
import java.util.TimeZone;

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

import com.persistent.cloudninja.dao.MeteringDao;
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 blob size calculation task. It processes the
 * messages generated by generator.
 */
@Component
@Lazy(true)
public class TenantBlobSizeProcessor extends TaskActivityBase {

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

    @Autowired
    private StorageUtility storageUtility;

    @Autowired
    private MeteringDao meteringDao;

    @Autowired
    private TaskCompletionDao taskCompletionDao;

    public TenantBlobSizeProcessor() throws InvalidKeyException, URISyntaxException {
        //task-queue which is shared between processor and generator.
        super(new TenantBlobSizeQueue(SchedulerSettings.BlobStorageSizeQueue,
                StorageClientUtility.getCloudStorageAccount().createCloudQueueClient()));
    }

    /** 
     * Calculates the blob sizes of private and public container.
     * 
     */
    @Override
    public boolean execute() {
        boolean retVal = true;
        String tenantId = null;
        long blobSize = 0;
        try {
            LOGGER.debug("In Processor");
            TenantBlobSizeQueue queue = (TenantBlobSizeQueue) getWorkQueue();
            tenantId = queue.dequeue(SchedulerSettings.MessageVisibilityTimeout);
            if (tenantId == null) {
                retVal = false;
                LOGGER.debug("Processor : msg is null");
            } else {
                StopWatch watch = new StopWatch();
                watch.start();
                //get the size of blobs in private container.
                blobSize = storageUtility.getContainerSize("tntp-" + tenantId.toLowerCase());
                //get the size of blobs in public container.
                blobSize = blobSize + storageUtility.getContainerSize("tnts-" + tenantId.toLowerCase());
                LOGGER.debug("Processor : msg is " + 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));
                //set the calculated size
                blobSize = blobSize / 1024;
                metering.setBlobStoreUsage(blobSize);
                meteringDao.add(metering);
                LOGGER.info("Processor : blobSize is " + blobSize);
                watch.stop();
                taskCompletionDao.updateTaskCompletionDetails(watch.getTotalTimeSeconds(),
                        "ProcessMeteringBlobSizes", "Measured " + blobSize + " kb for tenant " + tenantId);
            }
        } catch (Exception e) {
            retVal = false;
            LOGGER.error(e.getMessage(), e);
        }
        return retVal;
    }

}