001/* 002 * Copyright 2012 Anyware Services 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016package org.ametys.runtime.plugins.admin.jvmstatus.monitoring.sample; 017 018import java.io.IOException; 019import java.util.HashMap; 020import java.util.Map; 021 022import org.rrd4j.DsType; 023import org.rrd4j.core.RrdDef; 024import org.rrd4j.core.Sample; 025 026import org.ametys.runtime.plugins.admin.jvmstatus.RequestCountListener; 027import org.ametys.runtime.plugins.admin.jvmstatus.monitoring.SampleManager; 028 029/** 030 * {@link SampleManager} for collecting the throughput and the number 031 * of active HTTP requests . 032 */ 033public class HttpRequestSampleManager extends AbstractSampleManager 034{ 035 private long _lastCount; 036 037 @Override 038 protected void _configureDatasources(RrdDef rrdDef) 039 { 040 _registerDatasources(rrdDef, "processed", DsType.GAUGE, 0, Double.NaN); 041 } 042 043 @Override 044 protected Map<String, Object> _internalCollect(Sample sample) throws IOException 045 { 046 Map<String, Object> result = new HashMap<>(); 047 try 048 { 049 long processed = RequestCountListener.getTotalRequestCount() - _lastCount; 050 sample.setValue("processed", processed); 051 result.put("processed", processed); 052 _lastCount = RequestCountListener.getTotalRequestCount(); 053 } 054 catch (IllegalStateException e) 055 { 056 // empty : no value means an error 057 } 058 return result; 059 } 060 061 @Override 062 protected String _getGraphTitle() 063 { 064 return "HTTP request"; 065 } 066}