org.onebusaway.aws.monitoring.impl.metrics.AdminServerMetricsImpl.java Source code

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Here is the source code for org.onebusaway.aws.monitoring.impl.metrics.AdminServerMetricsImpl.java

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/**
 * Copyright (C) 2015 Cambridge Systematics
 *
 * 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 org.onebusaway.aws.monitoring.impl.metrics;

import java.io.IOException;
import java.net.MalformedURLException;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;

import org.apache.commons.lang.StringEscapeUtils;
import org.onebusaway.aws.monitoring.model.metrics.MetricName;
import org.onebusaway.aws.monitoring.service.metrics.AdminServerMetrics;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.ApplicationListener;
import org.springframework.context.event.ContextRefreshedEvent;
import org.springframework.stereotype.Component;

import com.amazonaws.services.cloudwatch.model.MetricDatum;
import com.amazonaws.services.cloudwatch.model.StandardUnit;
import com.google.gson.JsonArray;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;

@Component
public class AdminServerMetricsImpl extends MetricsTemplate
        implements AdminServerMetrics, ApplicationListener<ContextRefreshedEvent> {

    protected static final Logger _log = LoggerFactory.getLogger(WebappMetricsImpl.class);

    private static String admin_api_url = "";

    public void reloadConfig() {
        admin_api_url = _configurationService.getConfigurationValueAsString("monitoring.adminApiUrl", "");
    }

    @Override
    public void publishBundleCountMetrics() {
        double metric = 0;
        String bundleListUrl = admin_api_url + "bundle/list";
        try {
            JsonObject bundleList = getJsonObject(bundleListUrl);
            JsonArray bundles = bundleList.getAsJsonArray("bundles");
            for (JsonElement bundleElement : bundles) {
                if (metric == 0) {
                    try {
                        JsonObject bundle = bundleElement.getAsJsonObject();

                        Date today = new Date();
                        Date dateFrom = new SimpleDateFormat("yyyy-MM-dd")
                                .parse(bundle.get("service-date-from").getAsString());
                        Date dateTo = new SimpleDateFormat("yyyy-MM-dd")
                                .parse(bundle.get("service-date-to").getAsString());

                        if (dateFrom.compareTo(today) <= 0 && dateTo.compareTo(today) >= 0) {
                            JsonArray files = bundle.getAsJsonArray("files");
                            double numberOfFiles = files == null ? 0 : files.size();
                            publishMetric(MetricName.FirstValidBundleFilesCount, StandardUnit.Count, numberOfFiles);
                        }

                    } catch (NullPointerException npe) {
                        _log.error("Unable to retreive the bundle start and end dates for bundle " + metric + 1);
                    } catch (ParseException pe) {
                        _log.error("Unable to parse the bundle start and end dates for bundle " + metric + 1);
                    }
                }

                metric++;
            }
            publishMetric(MetricName.CurrentBundleCount, StandardUnit.Count, metric);
        } catch (MalformedURLException mue) {
            _log.error(mue.getMessage());
            return;
        } catch (IOException ioe) {
            _log.warn("Error communicating with specified url : " + bundleListUrl);
            //publishMetric(MetricName.StopMonitoringErrorResponse, StandardUnit.Count, metric);
        }

    }

    @Override
    public void onApplicationEvent(ContextRefreshedEvent event) {
        reloadConfig();
    }

}