| /** |
| * Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. The ASF licenses this file to you 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.apache.storm.metrics2.reporters; |
| |
| import com.codahale.metrics.ScheduledReporter; |
| import java.util.Map; |
| import java.util.concurrent.TimeUnit; |
| import org.apache.storm.metrics2.filters.StormMetricsFilter; |
| import org.apache.storm.utils.ObjectReader; |
| import org.apache.storm.utils.ReflectionUtils; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public abstract class ScheduledStormReporter implements StormReporter { |
| private static final Logger LOG = LoggerFactory.getLogger(ScheduledStormReporter.class); |
| protected ScheduledReporter reporter; |
| protected long reportingPeriod; |
| protected TimeUnit reportingPeriodUnit; |
| |
| public static TimeUnit getReportPeriodUnit(Map<String, Object> reporterConf) { |
| TimeUnit unit = getTimeUnitForConfig(reporterConf, REPORT_PERIOD_UNITS); |
| return unit == null ? TimeUnit.SECONDS : unit; |
| } |
| |
| private static TimeUnit getTimeUnitForConfig(Map reporterConf, String configName) { |
| String rateUnitString = ObjectReader.getString(reporterConf.get(configName), null); |
| if (rateUnitString != null) { |
| return TimeUnit.valueOf(rateUnitString); |
| } |
| return null; |
| } |
| |
| public static long getReportPeriod(Map reporterConf) { |
| return ObjectReader.getInt(reporterConf.get(REPORT_PERIOD), 10).longValue(); |
| } |
| |
| public static StormMetricsFilter getMetricsFilter(Map reporterConf) { |
| StormMetricsFilter filter = null; |
| Map<String, Object> filterConf = (Map) reporterConf.get("filter"); |
| if (filterConf != null) { |
| String clazz = (String) filterConf.get("class"); |
| if (clazz != null) { |
| filter = ReflectionUtils.newInstance(clazz); |
| filter.prepare(filterConf); |
| } |
| } |
| return filter; |
| } |
| |
| @Override |
| public void start() { |
| if (reporter != null) { |
| LOG.debug("Starting..."); |
| reporter.start(reportingPeriod, reportingPeriodUnit); |
| } else { |
| throw new IllegalStateException("Attempt to start without preparing " + getClass().getSimpleName()); |
| } |
| } |
| |
| @Override |
| public void stop() { |
| if (reporter != null) { |
| LOG.debug("Stopping..."); |
| reporter.stop(); |
| } else { |
| throw new IllegalStateException("Attempt to stop without preparing " + getClass().getSimpleName()); |
| } |
| } |
| } |