org.opennaas.extensions.genericnetwork.capability.nclprovisioner.components.NetworkStatisticsPoller.java Source code

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Here is the source code for org.opennaas.extensions.genericnetwork.capability.nclprovisioner.components.NetworkStatisticsPoller.java

Source

package org.opennaas.extensions.genericnetwork.capability.nclprovisioner.components;

/*
 * #%L
 * OpenNaaS :: Generic Network
 * %%
 * Copyright (C) 2007 - 2014 Fundaci Privada i2CAT, Internet i Innovaci a Catalunya
 * %%
 * 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.
 * #L%
 */

import java.io.IOException;
import java.net.URI;
import java.util.TimerTask;

import org.apache.commons.io.output.StringBuilderWriter;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.opennaas.core.resources.IResource;
import org.opennaas.core.resources.ResourceException;
import org.opennaas.extensions.genericnetwork.capability.circuitstatistics.ICircuitStatisticsCapability;
import org.opennaas.extensions.genericnetwork.capability.nclmonitoring.portstatistics.IPortStatisticsMonitoringCapability;
import org.opennaas.extensions.genericnetwork.model.portstatistics.TimePeriod;
import org.opennaas.extensions.genericnetwork.model.portstatistics.TimedPortStatistics;
import org.opennaas.extensions.genericnetwork.model.portstatistics.TimedStatistics;

import au.com.bytecode.opencsv.CSVWriter;

/**
 * 
 * @author Adrin Rosell Rey (i2CAT)
 *
 */
public class NetworkStatisticsPoller extends TimerTask {

    private Log log = LogFactory.getLog(NetworkStatisticsPoller.class);

    private IResource resource;
    private NetworkObservationsPusher slaManagerClient;
    private long previousTimestamp;

    public NetworkStatisticsPoller(URI slaManagerUri, IResource resource) {
        this.resource = resource;

        slaManagerClient = new NetworkObservationsPusher(slaManagerUri);
        previousTimestamp = System.currentTimeMillis();

    }

    @Override
    public void run() {

        long currentTimestamp = System.currentTimeMillis();
        TimePeriod timePeriod = new TimePeriod(previousTimestamp, currentTimestamp);

        log.info("Reporting stadistics to SLA Manager");

        log.debug("Getting stadistics for resource " + resource.getResourceDescriptor().getInformation().getName()
                + " during time period " + timePeriod);

        try {
            // report circuits statistics
            ICircuitStatisticsCapability circuitStatisticsCapab = (ICircuitStatisticsCapability) resource
                    .getCapabilityByInterface(ICircuitStatisticsCapability.class);
            IPortStatisticsMonitoringCapability portStatisticsCapab = (IPortStatisticsMonitoringCapability) resource
                    .getCapabilityByInterface(IPortStatisticsMonitoringCapability.class);

            String circuitStatisticsCSV = circuitStatisticsCapab.getStatistics(timePeriod);
            slaManagerClient.sendCircuitStatistics(circuitStatisticsCSV);
            log.debug("Circuit stadistics successfully reported.");

            // report ports statistics
            TimedPortStatistics portStatistics = portStatisticsCapab.getPortStatistics(timePeriod);

            slaManagerClient.sendPortStatistics(parsePortStatistics(portStatistics));
            log.debug("Port stadistics successfully reported.");

        } catch (ResourceException e) {
            log.warn("Could not report statistics for resource "
                    + resource.getResourceDescriptor().getInformation().getName(), e);
        } catch (Exception e) {
            log.warn("Error reporting statistics for resource "
                    + resource.getResourceDescriptor().getInformation().getName(), e);
        }

    }

    private String parsePortStatistics(TimedPortStatistics portStatistics) throws IOException {

        log.debug("Parsing port statistics into CSV format.");

        StringBuilder sb = new StringBuilder();
        CSVWriter writer = new CSVWriter(new StringBuilderWriter(sb), CSVWriter.DEFAULT_SEPARATOR,
                CSVWriter.NO_QUOTE_CHARACTER);

        try {
            for (TimedStatistics statistic : portStatistics.getStatistics()) {
                String[] csvStatistic = new String[5];
                csvStatistic[0] = String.valueOf(statistic.getTimestamp());
                csvStatistic[1] = statistic.getSwitchId();
                csvStatistic[2] = statistic.getPortId();
                csvStatistic[3] = statistic.getThroughput();
                csvStatistic[4] = statistic.getPacketLoss();

                writer.writeNext(csvStatistic);
            }

        } finally {
            writer.close();
        }
        return sb.toString();
    }
}