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/*
* Copyright 2011-2014 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file 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.amazonaws.util;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.apache.commons.logging.LogFactory;
import org.apache.http.annotation.NotThreadSafe;
/**
* In contrast to {@link TimingInfo}, which is intended to be a minimal support
* of the timing info, this class is the full support of timing info including
* features related to sub-measurements and counters.
*
* This class is instantiated instead of {@link TimingInfo} when
* request metric collection is required during a particular service
* request/response cycle.
*/
@NotThreadSafe
class TimingInfoFullSupport extends TimingInfo {
private final Map> subMeasurementsByName = new HashMap>();
private final Map countersByName = new HashMap();
/**
* A private ctor to facilitate the deprecation of using millisecond and
* migration to using nanosecond for timing measurement.
*
* @param startEpochTimeMilli start time since epoch in millisecond
* @param startTimeNano start time in nanosecond
* @param endTimeNano end time in nanosecond; or null if not known
*
* @see TimingInfo#startTimingFullSupport()
* @see TimingInfo#startTimingFullSupport(long)
* @see TimingInfo#newTimingInfoFullSupport(long, long)
* @see TimingInfo#newTimingInfoFullSupport(long, long, long)
*/
TimingInfoFullSupport(Long startEpochTimeMilli, long startTimeNano, Long endTimeNano) {
super(startEpochTimeMilli, startTimeNano, endTimeNano);
}
@Override
public void addSubMeasurement(String subMeasurementName, TimingInfo ti) {
List timings = subMeasurementsByName.get(subMeasurementName);
if (timings == null) {
timings = new ArrayList();
subMeasurementsByName.put(subMeasurementName, timings);
}
if (ti.isEndTimeKnown()) {
timings.add(ti);
} else {
LogFactory.getLog(getClass()).debug(
"Skip submeasurement timing info with no end time for "
+ subMeasurementName);
}
}
@Override
public TimingInfo getSubMeasurement(String subMeasurementName) {
return getSubMeasurement(subMeasurementName, 0);
}
@Override
public TimingInfo getSubMeasurement(String subMesurementName, int index) {
List timings = subMeasurementsByName.get(subMesurementName);
if (index < 0 || timings == null || timings.size() == 0
|| index >= timings.size()) {
return null;
}
return timings.get(index);
}
@Override
public TimingInfo getLastSubMeasurement(String subMeasurementName) {
if (subMeasurementsByName == null || subMeasurementsByName.size() == 0) {
return null;
}
List timings = subMeasurementsByName.get(subMeasurementName);
if (timings == null || timings.size() == 0) {
return null;
}
return timings.get(timings.size() - 1);
}
@Override
public List getAllSubMeasurements(String subMeasurementName) {
return subMeasurementsByName.get(subMeasurementName);
}
@Override
public Map> getSubMeasurementsByName() {
return subMeasurementsByName;
}
@Override
public Number getCounter(String key) {
return countersByName.get(key);
}
@Override
public Map getAllCounters() {
return countersByName;
}
@Override
public void setCounter(String key, long count) {
countersByName.put(key, count);
}
@Override
public void incrementCounter(String key) {
int count = 0;
Number counter = getCounter(key);
if (counter != null) {
count = counter.intValue();
}
setCounter(key, ++count);
}
}