org.spf4j.perf.impl.ms.tsdb

Class TSDBTxtMeasurementStore

java.lang.Object

org.spf4j.perf.impl.ms.tsdb.TSDBTxtMeasurementStore

All Implemented Interfaces:

Closeable, AutoCloseable, MeasurementStore

@ThreadSafe
public final class TSDBTxtMeasurementStore
extends Object
implements MeasurementStore

File based store implementation.

Author:

zoly

Constructor Summary

Constructors

Constructor and Description
TSDBTxtMeasurementStore(File file)

Method Summary

Modifier and Type	Method and Description
long	alocateMeasurements(MeasurementsInfo measurement, int sampleTimeMillis) Make any allocations necessary for the following measurements.
void	close()
void	flush() flush all data that might be buffered by this store.
void	saveMeasurements(long tableId, long timeStampMillis, long... measurements) Save measurements.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

TSDBTxtMeasurementStore

public TSDBTxtMeasurementStore(File file)
                        throws IOException

Throws:

IOException

Method Detail

alocateMeasurements

public long alocateMeasurements(MeasurementsInfo measurement,
                                int sampleTimeMillis)

Description copied from interface: MeasurementStore

Make any allocations necessary for the following measurements.

Specified by:

alocateMeasurements in interface MeasurementStore

Parameters:

measurement - - the information about the measurement(s)

sampleTimeMillis - - the expected sample time. (interval between the stored measurements).

Returns:

- the id of the measurementInfo table.

saveMeasurements

public void saveMeasurements(long tableId,
                             long timeStampMillis,
                             long... measurements)
                      throws IOException

Description copied from interface: MeasurementStore

Save measurements.

Specified by:

saveMeasurements in interface MeasurementStore

Parameters:

tableId - - the table ID to store measurements for.

timeStampMillis - - the timestamp of the measurement (millis since Jan 1 1970 UTC)

measurements - - the measurements to persist. (same order as declared)

Throws:

IOException - - IO issues.

close

@PreDestroy
public void close()
                       throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Throws:

IOException

flush

public void flush()
           throws IOException

Description copied from interface: MeasurementStore

flush all data that might be buffered by this store.

Specified by:

flush in interface MeasurementStore

Throws:

IOException - - IO issues.

toString

public String toString()

Overrides:

toString in class Object