org.apache.nifi.processor.util.bin

Class Bin

java.lang.Object

org.apache.nifi.processor.util.bin.Bin

public class Bin
extends Object

Note: Bin objects are NOT thread safe. If multiple threads access a Bin, the caller must synchronize access.

Field Summary

Fields

Modifier and Type	Field and Description
private List<FlowFile>	binContents
private Set<String>	binIndexSet
private long	creationMomentEpochNs
private String	fileCountAttribute
static String	FRAGMENT_INDEX_ATTRIBUTE
private static Pattern	intPattern
private static org.slf4j.Logger	logger
private int	maximumEntries
private long	maximumSizeBytes
private int	minimumEntries
private long	minimumSizeBytes
private ProcessSession	session
private long	size
private int	successiveFailedOfferings

Constructor Summary

Constructors

Constructor and Description
Bin(ProcessSession session, long minSizeBytes, long maxSizeBytes, int minEntries, int maxEntries, String fileCountAttribute) Constructs a new bin

Method Summary

Modifier and Type	Method and Description
long	getBinAge()
List<FlowFile>	getContents()
ProcessSession	getSession()
boolean	isFull() Indicates whether the bin has enough items to be considered full.
boolean	isFullEnough() Indicates enough size exists to meet the minimum requirements
boolean	isOlderThan(Bin other) Determines if this bin is older than the specified bin
boolean	isOlderThan(int duration, TimeUnit unit) Determines if this bin is older than the time specified.
boolean	offer(FlowFile flowFile, ProcessSession session) If this bin has enough room for the size of the given flow file then it is added otherwise it is not
Integer	toInteger(String value)

Methods inherited from class java.lang.Object

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

Field Detail

logger

private static final org.slf4j.Logger logger

FRAGMENT_INDEX_ATTRIBUTE

public static final String FRAGMENT_INDEX_ATTRIBUTE

session

private final ProcessSession session

creationMomentEpochNs

private final long creationMomentEpochNs

minimumSizeBytes

private final long minimumSizeBytes

maximumSizeBytes

private final long maximumSizeBytes

minimumEntries

private volatile int minimumEntries

maximumEntries

private volatile int maximumEntries

fileCountAttribute

private final String fileCountAttribute

binContents

private final List<FlowFile> binContents

binIndexSet

private final Set<String> binIndexSet

size

private long size

successiveFailedOfferings

private int successiveFailedOfferings

intPattern

private static final Pattern intPattern

Constructor Detail

Bin

public Bin(ProcessSession session,
           long minSizeBytes,
           long maxSizeBytes,
           int minEntries,
           int maxEntries,
           String fileCountAttribute)

Constructs a new bin

Parameters:

session - the session

minSizeBytes - min bytes

maxSizeBytes - max bytes

minEntries - min entries

maxEntries - max entries

fileCountAttribute - num files

Throws:

IllegalArgumentException - if the min is not less than or equal to the max.

Method Detail

getSession

public ProcessSession getSession()

isFull

public boolean isFull()

Indicates whether the bin has enough items to be considered full. This is based on whether the current size of the bin is greater than the minimum size in bytes and based on having a number of successive unsuccessful attempts to add a new item (because it is so close to the max or the size of the objects being attempted do not favor tight packing)

Returns:

true if considered full; false otherwise

isFullEnough

public boolean isFullEnough()

Indicates enough size exists to meet the minimum requirements

Returns:

true if full enough

isOlderThan

public boolean isOlderThan(int duration,
                           TimeUnit unit)

Determines if this bin is older than the time specified.

Parameters:

duration - duration

unit - unit

Returns:

true if this bin is older than the length of time given; false otherwise

isOlderThan

public boolean isOlderThan(Bin other)

Determines if this bin is older than the specified bin

Parameters:

other - other bin

Returns:

true if this is older than given bin

offer

public boolean offer(FlowFile flowFile,
                     ProcessSession session)

If this bin has enough room for the size of the given flow file then it is added otherwise it is not

Parameters:

flowFile - flowfile to offer

session - the ProcessSession to which the FlowFile belongs

Returns:

true if added; false otherwise

toInteger

public Integer toInteger(String value)

getContents

public List<FlowFile> getContents()

Returns:

the underlying list of flow files within this bin

getBinAge

public long getBinAge()