net.yacy.search

Class ResourceObserver

java.lang.Object

net.yacy.search.ResourceObserver

public class ResourceObserver
extends java.lang.Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ResourceObserver.Space

Field Summary

Fields

Modifier and Type	Field and Description
static ConcurrentLog	log
private ResourceObserver.Space	normalizedDiskFree
private ResourceObserver.Space	normalizedDiskUsed
private ResourceObserver.Space	normalizedMemoryFree
private java.io.File	path
private Switchboard	sb
private long	sizeOfDirectory_lastCountTime
private long	sizeOfDirectory_lastCountValue

Constructor Summary

Constructors

Constructor and Description
ResourceObserver(Switchboard sb)

Method Summary

Methods

Modifier and Type	Method and Description
boolean	getDiskAvailable()
long	getMaxUsedDiskOvershot()
long	getMaxUsedDiskSteadystate()
boolean	getMemoryAvailable()
long	getMinFreeDiskSteadystate()
long	getMinFreeDiskUndershot()
long	getMinFreeMemory()
private ResourceObserver.Space	getNormalizedDiskFree() returns the amount of disk space available
private ResourceObserver.Space	getNormalizedDiskUsed(boolean cached)
private ResourceObserver.Space	getNormalizedMemoryFree()
long	getSizeOfDataPath(boolean cached)
long	getUsableSpace()
void	resourceObserverJob() checks the resources and pauses crawls if necessary

Methods inherited from class java.lang.Object

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

Field Detail

log

public static final ConcurrentLog log

sb

private final Switchboard sb

path

private final java.io.File path

normalizedDiskFree

private ResourceObserver.Space normalizedDiskFree

normalizedDiskUsed

private ResourceObserver.Space normalizedDiskUsed

normalizedMemoryFree

private ResourceObserver.Space normalizedMemoryFree

sizeOfDirectory_lastCountTime

private long sizeOfDirectory_lastCountTime

sizeOfDirectory_lastCountValue

private long sizeOfDirectory_lastCountValue

Constructor Detail

ResourceObserver

public ResourceObserver(Switchboard sb)

Method Detail

resourceObserverJob

public void resourceObserverJob()

checks the resources and pauses crawls if necessary

getSizeOfDataPath

public long getSizeOfDataPath(boolean cached)

getUsableSpace

public long getUsableSpace()

getNormalizedDiskUsed

private ResourceObserver.Space getNormalizedDiskUsed(boolean cached)

getNormalizedDiskFree

private ResourceObserver.Space getNormalizedDiskFree()

returns the amount of disk space available

Returns:

• HIGH if disk space is available
• MEDIUM if low disk space is available
• LOW if lower than hardlimit disk space is available

getNormalizedMemoryFree

private ResourceObserver.Space getNormalizedMemoryFree()

getDiskAvailable

public boolean getDiskAvailable()

Returns:

true if disk space is available

getMemoryAvailable

public boolean getMemoryAvailable()

Returns:

true if memory is available

getMaxUsedDiskSteadystate

public long getMaxUsedDiskSteadystate()

Returns:

amount of space (bytes) that should be used in steady state

getMaxUsedDiskOvershot

public long getMaxUsedDiskOvershot()

Returns:

amount of space (bytes) that should at least be kept free as hard limit; the limit when autoregulation to steady state should start

getMinFreeDiskSteadystate

public long getMinFreeDiskSteadystate()

Returns:

amount of space (bytes) that should be kept free as steady state

getMinFreeDiskUndershot

public long getMinFreeDiskUndershot()

Returns:

amount of space (bytes) that should at least be kept free as hard limit; the limit when autoregulation to steady state should start

getMinFreeMemory

public long getMinFreeMemory()

Returns:

amount of space (MiB) that should at least be free