org.apache.commons.monitoring.reporting
Class SelectorPeriodicLogger

java.lang.Object
  java.util.TimerTask
      org.apache.commons.monitoring.reporting.AbstractPeriodicLogger
          org.apache.commons.monitoring.reporting.SelectorPeriodicLogger

All Implemented Interfaces:

java.lang.Runnable

public abstract class SelectorPeriodicLogger
extends AbstractPeriodicLogger

A periodic logger implementation that uses a set of selector to extract monitoring datas to log.

Typical use case is to produce a fixed format (CSV, Excel-like, tabular...) in a log file, with a new line for each period.

Author:

Nicolas De Loof

Constructor Summary

SelectorPeriodicLogger(int period, java.util.Date firstTime, Repository.Observable repository, java.util.List<java.lang.String> selectors)

SelectorPeriodicLogger(int period, java.util.Date firstTime, Repository.Observable repository, java.lang.String[] selectors)

Method Summary

protected abstract void	log(java.lang.Object[] values) Log the data extracted by selectors
protected void	log(SecondaryRepository period) Log the data from the (secondary) repository generated during the period

Methods inherited from class org.apache.commons.monitoring.reporting.AbstractPeriodicLogger

getRepositoryForActivePeriod, handleError, run, stop

Methods inherited from class java.util.TimerTask

cancel, scheduledExecutionTime

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SelectorPeriodicLogger

public SelectorPeriodicLogger(int period,
                              java.util.Date firstTime,
                              Repository.Observable repository,
                              java.util.List<java.lang.String> selectors)

Parameters:

period - the period (in ms) to log the monitoring state

firstTime - the first time to log (may be null)

repository - the observed repository

output - the output file

SelectorPeriodicLogger

public SelectorPeriodicLogger(int period,
                              java.util.Date firstTime,
                              Repository.Observable repository,
                              java.lang.String[] selectors)

Parameters:

period - the period (in ms) to log the monitoring state

repository - the target monitoring repository

output - the output file

Method Detail

log

protected final void log(SecondaryRepository period)
                  throws java.io.IOException

Log the data from the (secondary) repository generated during the period

Specified by:

log in class AbstractPeriodicLogger

Parameters:

period - secondary repository that observed the monitored state during the last active period

Throws:

java.io.IOException

log

protected abstract void log(java.lang.Object[] values)
                     throws java.io.IOException

Log the data extracted by selectors

Parameters:

values - the data to log

Throws:

java.io.IOException - any I/O error during log