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

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Here is the source code for com.persistent.cloudninja.scheduler.TenantDBSizeGenerator.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.util.Iterator;
import java.util.List;

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.TaskCompletionDao;
import com.persistent.cloudninja.dao.TenantIdMasterDao;
import com.persistent.cloudninja.domainobject.TenantIdMasterEntity;
import com.persistent.cloudninja.utils.SchedulerSettings;
import com.persistent.cloudninja.utils.StorageClientUtility;

/**
 * Generator for tenant DB size calculation task. It generates the
 * messages to be processed by processor.
 *
 */
@Component
public class TenantDBSizeGenerator extends TaskActivityBase {

    @Autowired
    private TaskCompletionDao taskCompletionDao;

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

    @Autowired
    private TenantIdMasterDao tenantIdMasterDao;

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

    /**
     * Adds message to tenantdbsizequeue which is shared between processor
     * and generator.
     */
    @Override
    public boolean execute() {
        StopWatch watch = new StopWatch();
        boolean retVal = true;
        int tenantIds = 0;
        try {
            watch.start();
            LOGGER.debug("In generator");
            TenantDBSizeQueue queue = (TenantDBSizeQueue) getWorkQueue();
            List<TenantIdMasterEntity> listTenant = tenantIdMasterDao.getAllTenants();
            tenantIds = listTenant.size();
            for (Iterator<TenantIdMasterEntity> iterator = listTenant.iterator(); iterator.hasNext();) {
                TenantIdMasterEntity tenant = (TenantIdMasterEntity) iterator.next();
                String tenantId = tenant.getTenantId();
                queue.enqueue(tenantId);
                LOGGER.info("Generator : msg added is " + tenantId);
            }
            watch.stop();
            taskCompletionDao.updateTaskCompletionDetails(watch.getTotalTimeSeconds(),
                    "GenerateMeterTenantDBSizeWork", "Measure database size for " + tenantIds + " tenants");
        } catch (StorageException e) {
            retVal = false;
            LOGGER.error(e.getMessage(), e);
        }
        return retVal;
    }

}