/*
* 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.jackrabbit.api.stats;
/**
* Interface for a time series of the measured values per
* second, minute, hour and day. The type of the value is arbitrary; it
* could be cache hits or misses, disk reads or writes, created sessions,
* completed transactions, or pretty much anything of interest.
*
* @since Apache Jackrabbit 2.3.2
*/
public interface TimeSeries {
/**
* Returns the measured value per second over the last minute.
*
* @return measured value per second, in chronological order
*/
long[] getValuePerSecond();
/**
* Returns the measured value per minute over the last hour.
*
* @return measured value per minute, in chronological order
*/
long[] getValuePerMinute();
/**
* Returns the measured value per hour over the last week.
*
* @return measured value per hour, in chronological order
*/
long[] getValuePerHour();
/**
* Returns the measured value per week over the last three years.
*
* @return measured value per week, in chronological order
*/
long[] getValuePerWeek();
/**
* The value used to encode missing values i.e. for a period where no value was recorded.
*
* @return default value
*/
long getMissingValue();
}