Represents an entry in the Interest table (PIT). More...

#include <daemon/table/pit-entry.hpp>

Inheritance diagram for nfd::pit::Entry:

Collaboration diagram for nfd::pit::Entry:

Public Member Functions
	Entry (const Interest &interest)

bool	canMatch (const Interest &interest, size_t nEqualNameComps=0) const

void	clearInRecords () noexcept
	Removes all in-records. More...

void	clearStrategyInfo ()
	Clear all StrategyInfo items. More...

void	deleteInRecord (InRecordCollection::const_iterator pos)
	Removes the in-record at position `pos`. More...

void	deleteOutRecord (const Face &face)
	Delete the out-record for `face` if it exists. More...

template<typename T >
size_t	eraseStrategyInfo ()
	Erase a StrategyInfo item. More...

InRecordCollection::iterator	findInRecord (const Face &face) noexcept
	Get the in-record for `face`. More...

OutRecordCollection::iterator	findOutRecord (const Face &face) noexcept
	Get the out-record for `face`. More...

const InRecordCollection &	getInRecords () const noexcept
	Returns the collection of in-records. More...

const Interest &	getInterest () const

const Name &	getName () const

const OutRecordCollection &	getOutRecords () const noexcept
	Returns the collection of out-records. More...

template<typename T >
T *	getStrategyInfo () const
	Get a StrategyInfo item. More...

bool	hasInRecords () const noexcept

bool	hasOutRecords () const noexcept

InRecordCollection::const_iterator	in_begin () const noexcept

InRecordCollection::iterator	in_begin () noexcept

InRecordCollection::const_iterator	in_end () const noexcept

InRecordCollection::iterator	in_end () noexcept

InRecordCollection::iterator	insertOrUpdateInRecord (Face &face, const Interest &interest)
	Insert or update an in-record. More...

OutRecordCollection::iterator	insertOrUpdateOutRecord (Face &face, const Interest &interest)
	Insert or update an out-record. More...

template<typename T , typename ... A>
std::pair< T *, bool >	insertStrategyInfo (A &&... args)
	Insert a StrategyInfo item. More...

OutRecordCollection::const_iterator	out_begin () const noexcept

OutRecordCollection::iterator	out_begin () noexcept

OutRecordCollection::const_iterator	out_end () const noexcept

OutRecordCollection::iterator	out_end () noexcept

Public Attributes
time::milliseconds	dataFreshnessPeriod = 0_ms
	Data freshness period. More...

ndn::scheduler::EventId	expiryTimer
	Expiry timer. More...

bool	isSatisfied = false
	Indicates whether this PIT entry is satisfied. More...

Detailed Description

Represents an entry in the Interest table (PIT).

An Interest table entry represents either a pending Interest or a recently satisfied Interest. Each entry contains a collection of in-records, a collection of out-records, and two timers used in forwarding pipelines. In addition, the entry, in-records, and out-records are subclasses of StrategyInfoHost, which allows forwarding strategy to store arbitrary information on them.

See also: Pit

Definition at line 196 of file pit-entry.hpp.

Constructor & Destructor Documentation

◆ Entry()

nfd::pit::Entry::Entry ( const Interest & interest )

explicit

Definition at line 62 of file pit-entry.cpp.

Member Function Documentation

◆ canMatch()

bool nfd::pit::Entry::canMatch	(	const Interest &	interest,
		size_t	nEqualNameComps = `0`
	)		const

Returns: whether interest matches this entry

Parameters

interest	the Interest
nEqualNameComps	number of initial name components guaranteed to be equal

Todo:: #3162 match ForwardingHint field

Definition at line 68 of file pit-entry.cpp.

◆ clearInRecords()

void nfd::pit::Entry::clearInRecords ( )

inlinenoexcept

Removes all in-records.

Definition at line 301 of file pit-entry.hpp.

◆ clearStrategyInfo()

void nfd::StrategyInfoHost::clearStrategyInfo ( )

inlineinherited

Clear all StrategyInfo items.

Definition at line 92 of file strategy-info-host.hpp.

◆ deleteInRecord()

void nfd::pit::Entry::deleteInRecord ( InRecordCollection::const_iterator pos )

inline

Removes the in-record at position pos.

Parameters

pos	iterator to the in-record to remove; must be valid and dereferenceable.

Definition at line 292 of file pit-entry.hpp.

◆ deleteOutRecord()

void nfd::pit::Entry::deleteOutRecord ( const Face & face )

Delete the out-record for face if it exists.

Definition at line 125 of file pit-entry.cpp.

◆ eraseStrategyInfo()

template<typename T >

size_t nfd::StrategyInfoHost::eraseStrategyInfo ( )

inlineinherited

Erase a StrategyInfo item.

Template Parameters

T	type of StrategyInfo, must be a subclass of fw::StrategyInfo

Returns: number of items erased

Definition at line 82 of file strategy-info-host.hpp.

◆ findInRecord()

InRecordCollection::iterator nfd::pit::Entry::findInRecord ( const Face & face )

noexcept

Get the in-record for face.

Returns: an iterator to the in-record, or in_end() if it does not exist

Definition at line 81 of file pit-entry.cpp.

◆ findOutRecord()

OutRecordCollection::iterator nfd::pit::Entry::findOutRecord ( const Face & face )

noexcept

Get the out-record for face.

Returns: an iterator to the out-record, or out_end() if it does not exist

Definition at line 103 of file pit-entry.cpp.

◆ getInRecords()

const InRecordCollection& nfd::pit::Entry::getInRecords ( ) const

inlinenoexcept

Returns the collection of in-records.

Definition at line 233 of file pit-entry.hpp.

◆ getInterest()

const Interest& nfd::pit::Entry::getInterest ( ) const

inline

Returns: the representative Interest of the PIT entry

Note: Every Interest in in-records and out-records should have same Name and Selectors as the representative Interest.

Todo:: #3162 require Link field to match the representative Interest

Definition at line 208 of file pit-entry.hpp.

◆ getName()

const Name& nfd::pit::Entry::getName ( ) const

inline

Returns: Interest Name

Definition at line 216 of file pit-entry.hpp.

◆ getOutRecords()

const OutRecordCollection& nfd::pit::Entry::getOutRecords ( ) const

inlinenoexcept

Returns the collection of out-records.

Definition at line 311 of file pit-entry.hpp.

◆ getStrategyInfo()

template<typename T >

T* nfd::StrategyInfoHost::getStrategyInfo ( ) const

inlineinherited

Get a StrategyInfo item.

Template Parameters

T	type of StrategyInfo, must be a subclass of fw::StrategyInfo

Returns: an existing StrategyInfo item of type T, or nullptr if it does not exist

Definition at line 46 of file strategy-info-host.hpp.

◆ hasInRecords()

bool nfd::pit::Entry::hasInRecords ( ) const

inlinenoexcept

Return values

true	There is at least one in-record. This implies some downstream is waiting for Data or Nack.
false	There is no in-record. This implies the entry is new or has been satisfied or Nacked.

Definition at line 244 of file pit-entry.hpp.

◆ hasOutRecords()

bool nfd::pit::Entry::hasOutRecords ( ) const

inlinenoexcept

Return values

true	There is at least one out-record. This implies the Interest has been forwarded to some upstream, and they haven't returned Data, but may have returned Nacks.
false	There is no out-record. This implies the Interest has not been forwarded.

Definition at line 323 of file pit-entry.hpp.

◆ in_begin() [1/2]

InRecordCollection::const_iterator nfd::pit::Entry::in_begin ( ) const

inlinenoexcept

Definition at line 256 of file pit-entry.hpp.

◆ in_begin() [2/2]

InRecordCollection::iterator nfd::pit::Entry::in_begin ( )

inlinenoexcept

Definition at line 250 of file pit-entry.hpp.

◆ in_end() [1/2]

InRecordCollection::const_iterator nfd::pit::Entry::in_end ( ) const

inlinenoexcept

Definition at line 268 of file pit-entry.hpp.

◆ in_end() [2/2]

InRecordCollection::iterator nfd::pit::Entry::in_end ( )

inlinenoexcept

Definition at line 262 of file pit-entry.hpp.

◆ insertOrUpdateInRecord()

InRecordCollection::iterator nfd::pit::Entry::insertOrUpdateInRecord	(	Face &	face,
		const Interest &	interest
	)

Insert or update an in-record.

Returns: an iterator to the new or updated in-record

Definition at line 88 of file pit-entry.cpp.

◆ insertOrUpdateOutRecord()

OutRecordCollection::iterator nfd::pit::Entry::insertOrUpdateOutRecord	(	Face &	face,
		const Interest &	interest
	)

Insert or update an out-record.

Returns: an iterator to the new or updated out-record

Definition at line 110 of file pit-entry.cpp.

◆ insertStrategyInfo()

template<typename T , typename ... A>

std::pair<T*, bool> nfd::StrategyInfoHost::insertStrategyInfo ( A &&... args )

inlineinherited

Insert a StrategyInfo item.

Template Parameters

T	type of StrategyInfo, must be a subclass of fw::StrategyInfo

Returns: a new or existing StrategyInfo item of type T, and true for new item, false for existing item

Definition at line 64 of file strategy-info-host.hpp.

◆ out_begin() [1/2]

OutRecordCollection::const_iterator nfd::pit::Entry::out_begin ( ) const

inlinenoexcept

Definition at line 335 of file pit-entry.hpp.

◆ out_begin() [2/2]

OutRecordCollection::iterator nfd::pit::Entry::out_begin ( )

inlinenoexcept

Definition at line 329 of file pit-entry.hpp.

◆ out_end() [1/2]

OutRecordCollection::const_iterator nfd::pit::Entry::out_end ( ) const

inlinenoexcept

Definition at line 347 of file pit-entry.hpp.

◆ out_end() [2/2]

OutRecordCollection::iterator nfd::pit::Entry::out_end ( )

inlinenoexcept

Definition at line 341 of file pit-entry.hpp.

Member Data Documentation

◆ dataFreshnessPeriod

time::milliseconds nfd::pit::Entry::dataFreshnessPeriod = 0_ms

Data freshness period.

Note: This field is meaningful only if isSatisfied is true

Definition at line 386 of file pit-entry.hpp.

◆ expiryTimer

ndn::scheduler::EventId nfd::pit::Entry::expiryTimer

Expiry timer.

This timer is used in forwarding pipelines to delete the entry

Definition at line 377 of file pit-entry.hpp.

◆ isSatisfied

bool nfd::pit::Entry::isSatisfied = false

Indicates whether this PIT entry is satisfied.

Definition at line 381 of file pit-entry.hpp.

NFD: Named Data Networking Forwarding Daemon 22.12-77-ga1480a7c documentation

Public Member Functions

Public Attributes

Detailed Description

Constructor & Destructor Documentation

◆ Entry()

Member Function Documentation

◆ canMatch()

◆ clearInRecords()

◆ clearStrategyInfo()

◆ deleteInRecord()

◆ deleteOutRecord()

◆ eraseStrategyInfo()

◆ findInRecord()

◆ findOutRecord()

◆ getInRecords()

◆ getInterest()

◆ getName()

◆ getOutRecords()

◆ getStrategyInfo()

◆ hasInRecords()

◆ hasOutRecords()

◆ in_begin() [1/2]

◆ in_begin() [2/2]

◆ in_end() [1/2]

◆ in_end() [2/2]

◆ insertOrUpdateInRecord()

◆ insertOrUpdateOutRecord()

◆ insertStrategyInfo()

◆ out_begin() [1/2]

◆ out_begin() [2/2]

◆ out_end() [1/2]

◆ out_end() [2/2]

Member Data Documentation

◆ dataFreshnessPeriod

◆ expiryTimer

◆ isSatisfied