isc::dhcp::ClientHandler Class Reference

Client race avoidance RAII handler. More...

#include <client_handler.h>

Inheritance diagram for isc::dhcp::ClientHandler:

Classes
struct	Client
	Class (aka static) types, methods and members. More...

Public Types
typedef boost::shared_ptr< Client >	ClientPtr
	The type of shared pointers to clients.
typedef boost::shared_ptr< Client >	ClientPtr
	The type of shared pointers to clients.

Public Member Functions
	ClientHandler ()
	Public interface.
	ClientHandler ()
	Public interface.
virtual	~ClientHandler ()
	Destructor.
virtual	~ClientHandler ()
	Destructor.
bool	tryLock (Pkt4Ptr query, ContinuationPtr cont=ContinuationPtr())
	Tries to acquires a client.
bool	tryLock (Pkt6Ptr query, ContinuationPtr cont=ContinuationPtr())
	Tries to acquires a client.

Detailed Description

Client race avoidance RAII handler.

Definition at line 38 of file dhcp4/client_handler.h.

Member Typedef Documentation

ClientPtr [1/2]

typedef boost::shared_ptr<Client> isc::dhcp::ClientHandler::ClientPtr

The type of shared pointers to clients.

Definition at line 88 of file dhcp4/client_handler.h.

ClientPtr [2/2]

typedef boost::shared_ptr<Client> isc::dhcp::ClientHandler::ClientPtr

The type of shared pointers to clients.

Definition at line 83 of file dhcp6/client_handler.h.

Constructor & Destructor Documentation

ClientHandler() [1/2]

isc::dhcp::ClientHandler::ClientHandler

(

)

Public interface.

Constructor.

Definition at line 159 of file dhcp4/client_handler.cc.

~ClientHandler() [1/2]

isc::dhcp::ClientHandler::~ClientHandler ( )

virtual

Destructor.

Releases the client if it was acquired.

Definition at line 163 of file dhcp4/client_handler.cc.

References isc::util::ThreadPool< WorkItem, Container >::addFront(), isc::dhcp::DBG_DHCP4_BASIC, isc::dhcp::dhcp4_logger, isc::dhcp::DHCP4_PACKET_QUEUE_FULL, isc::util::MultiThreadingMgr::getMode(), isc::util::MultiThreadingMgr::getThreadPool(), isc::util::MultiThreadingMgr::instance(), and LOG_DEBUG.

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ClientHandler() [2/2]

isc::dhcp::ClientHandler::ClientHandler

(

)

Public interface.

Constructor.

~ClientHandler() [2/2]

virtual isc::dhcp::ClientHandler::~ClientHandler ( )

virtual

Destructor.

Releases the client if it was acquired.

Member Function Documentation

tryLock() [1/2]

bool isc::dhcp::ClientHandler::tryLock	(	Pkt4Ptr	query,
		ContinuationPtr	cont = ContinuationPtr() )

Tries to acquires a client.

Lookup the client:

• if not found insert the client in the clients map and return true
• if found, if has a continuation put it in the holder, and return false

Parameters

query	The query from the client.
cont	The continuation in the case the client was held.

Returns

true if the client was acquired, false if there is already a query from the same client.

Definition at line 188 of file dhcp4/client_handler.cc.

References isc::stats::StatsMgr::addValue(), isc::dhcp::bad_packet4_logger, isc::log::DBGLVL_PKT_HANDLING, isc::dhcp::DHCP4_PACKET_DROP_0011, isc::dhcp::DHCP4_PACKET_DROP_0012, isc::dhcp::DHO_DHCP_CLIENT_IDENTIFIER, isc::util::str::dumpAsHex(), isc::stats::StatsMgr::instance(), isc_throw, and LOG_DEBUG.

Referenced by isc::dhcp::Dhcpv4Srv::processDhcp4Query(), and isc::dhcp::Dhcpv6Srv::processDhcp6Query().

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tryLock() [2/2]

bool isc::dhcp::ClientHandler::tryLock	(	Pkt6Ptr	query,
		ContinuationPtr	cont = ContinuationPtr() )

Tries to acquires a client.

Lookup the client:

• if not found insert the client in the clients map and return true
• if found, if has a continuation put it in the holder, and return false

Parameters

query	The query from the client.
cont	The continuation in the case the client was held.

Returns

true if the client was acquired, false if there is already a query from the same client.

Definition at line 109 of file dhcp6/client_handler.cc.

References isc::stats::StatsMgr::addValue(), isc::dhcp::bad_packet6_logger, isc::log::DBGLVL_PKT_HANDLING, isc::dhcp::DHCP6_PACKET_DROP_DUPLICATE, isc::stats::StatsMgr::instance(), isc_throw, and LOG_DEBUG.

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The documentation for this class was generated from the following files:

• dhcp4/client_handler.h
• dhcp6/client_handler.h
• dhcp4/client_handler.cc
• dhcp6/client_handler.cc