Represents the host reservations specified in the configuration file. More...

#include <cfg_hosts.h>

Inheritance diagram for isc::dhcp::CfgHosts:

Public Member Functions
virtual	~CfgHosts ()
	Destructor. More...

virtual void	add (const HostPtr &host)
	Adds a new host to the collection. More...

virtual bool	del (const SubnetID &subnet_id, const asiolink::IOAddress &addr)
	Attempts to delete a host by address. More...

virtual bool	del4 (const SubnetID &subnet_id, const Host::IdentifierType &identifier_type, const uint8_t *identifier_begin, const size_t identifier_len)
	Attempts to delete a host by (subnet4-id, identifier, identifier-type) More...

virtual bool	del6 (const SubnetID &subnet_id, const Host::IdentifierType &identifier_type, const uint8_t *identifier_begin, const size_t identifier_len)
	Attempts to delete a host by (subnet6-id, identifier, identifier-type) More...

virtual size_t	delAll4 (const SubnetID &subnet_id)
	Attempts to delete all hosts for a given IPv4 subnet. More...

virtual size_t	delAll6 (const SubnetID &subnet_id)
	Attempts to delete all hosts for a given IPv6 subnet. More...

virtual ConstHostPtr	get4 (const SubnetID &subnet_id, const asiolink::IOAddress &address) const
	Returns a host connected to the IPv4 subnet and having a reservation for a specified IPv4 address. More...

virtual HostPtr	get4 (const SubnetID &subnet_id, const Host::IdentifierType &identifier_type, const uint8_t *identifier_begin, const size_t identifier_len)
	Returns a host connected to the IPv4 subnet. More...

virtual ConstHostPtr	get4 (const SubnetID &subnet_id, const Host::IdentifierType &identifier_type, const uint8_t *identifier_begin, const size_t identifier_len) const
	Returns a host connected to the IPv4 subnet. More...

virtual HostPtr	get6 (const asiolink::IOAddress &prefix, const uint8_t prefix_len)
	Returns a host using the specified IPv6 prefix. More...

virtual ConstHostPtr	get6 (const asiolink::IOAddress &prefix, const uint8_t prefix_len) const
	Returns a host using the specified IPv6 prefix. More...

virtual HostPtr	get6 (const SubnetID &subnet_id, const asiolink::IOAddress &address)
	Returns a host connected to the IPv6 subnet and having a reservation for a specified IPv6 address. More...

virtual ConstHostPtr	get6 (const SubnetID &subnet_id, const asiolink::IOAddress &address) const
	Returns a host connected to the IPv6 subnet and having a reservation for a specified IPv6 address. More...

virtual HostPtr	get6 (const SubnetID &subnet_id, const Host::IdentifierType &identifier_type, const uint8_t *identifier_begin, const size_t identifier_len)
	Returns a host connected to the IPv6 subnet. More...

virtual ConstHostPtr	get6 (const SubnetID &subnet_id, const Host::IdentifierType &identifier_type, const uint8_t *identifier_begin, const size_t identifier_len) const
	Returns a host connected to the IPv6 subnet. More...

virtual HostCollection	getAll (const Host::IdentifierType &identifier_type, const uint8_t *identifier_begin, const size_t identifier_len)
	Non-const version of the `getAll` const method. More...

virtual ConstHostCollection	getAll (const Host::IdentifierType &identifier_type, const uint8_t *identifier_begin, const size_t identifier_len) const
	Return all hosts connected to any subnet for which reservations have been made using a specified identifier. More...

virtual HostCollection	getAll4 (const asiolink::IOAddress &address)
	Returns a collection of hosts using the specified IPv4 address. More...

virtual ConstHostCollection	getAll4 (const asiolink::IOAddress &address) const
	Returns a collection of hosts using the specified IPv4 address. More...

virtual HostCollection	getAll6 (const asiolink::IOAddress &address)
	Returns a collection of hosts using the specified IPv6 address. More...

virtual ConstHostCollection	getAll6 (const asiolink::IOAddress &address) const
	Returns a collection of hosts using the specified IPv6 address. More...

virtual std::string	getType () const
	Return backend type. More...

isc::data::ElementPtr	toElement () const
	Unparse a configuration object. More...

Public Member Functions inherited from isc::dhcp::BaseHostDataSource
virtual	~BaseHostDataSource ()
	Default destructor implementation. More...

virtual void	commit ()
	Commit Transactions. More...

virtual void	rollback ()
	Rollback Transactions. More...

Public Member Functions inherited from isc::dhcp::WritableHostDataSource
virtual	~WritableHostDataSource ()
	Default destructor implementation. More...

Public Member Functions inherited from isc::data::CfgToElement
virtual	~CfgToElement ()
	Destructor. More...

Additional Inherited Members
Public Types inherited from isc::dhcp::BaseHostDataSource
enum	IdType { ID_HWADDR = 0, ID_DUID = 1 }
	Specifies the type of an identifier. More...

Detailed Description

Represents the host reservations specified in the configuration file.

This class holds a collection of the host reservations (Host objects) which can be retrieved using different search criteria.

In the typical case the reservations are searched using the client's MAC address or DUID and a subnet that the client is connected to. The reservations can be also retrieved using other parameters, such as reserved IP address.

The reservations are added to this object by the configuration parsers, when the new configuration is applied for the server. The reservations are retrieved by the HostMgr class when the server is allocating or renewing an address or prefix for the particular client.

Definition at line 37 of file cfg_hosts.h.

Constructor & Destructor Documentation

◆ ~CfgHosts()

virtual isc::dhcp::CfgHosts::~CfgHosts ( )

inlinevirtual

Destructor.

Definition at line 42 of file cfg_hosts.h.

Member Function Documentation

◆ add()

void isc::dhcp::CfgHosts::add ( const HostPtr & host )

virtual

Adds a new host to the collection.

Parameters

host	Pointer to the new `Host` object being added.

Exceptions

DuplicateHost If a host for a particular HW address or DUID has already been added to the IPv4 or IPv6 subnet.

Implements isc::dhcp::BaseHostDataSource.

Definition at line 439 of file cfg_hosts.cc.

References isc::dhcp::HOSTS_DBG_TRACE, isc::dhcp::hosts_logger, isc_throw, and LOG_DEBUG.

◆ del()

bool isc::dhcp::CfgHosts::del	(	const SubnetID &	subnet_id,
		const asiolink::IOAddress &	addr
	)

virtual

Attempts to delete a host by address.

This method supports both v4 and v6.

Todo:: : Not implemented.

Parameters

subnet_id	subnet identifier.
addr	specified address.

Todo:: : Implement host removal

Implements isc::dhcp::BaseHostDataSource.

Definition at line 597 of file cfg_hosts.cc.

References isc_throw.

◆ del4()

bool isc::dhcp::CfgHosts::del4	(	const SubnetID &	subnet_id,
		const Host::IdentifierType &	identifier_type,
		const uint8_t *	identifier_begin,
		const size_t	identifier_len
	)

virtual

Attempts to delete a host by (subnet4-id, identifier, identifier-type)

This method supports v4 only.

Todo:: : Not implemented.

Parameters

subnet_id	IPv4 Subnet identifier.
identifier_type	Identifier type.
identifier_begin	Pointer to a beginning of a buffer containing an identifier.
identifier_len	Identifier length.

Returns: true if deletion was successful, false otherwise.

Todo:: : Implement host removal

Implements isc::dhcp::BaseHostDataSource.

Definition at line 616 of file cfg_hosts.cc.

References isc_throw.

◆ del6()

bool isc::dhcp::CfgHosts::del6	(	const SubnetID &	subnet_id,
		const Host::IdentifierType &	identifier_type,
		const uint8_t *	identifier_begin,
		const size_t	identifier_len
	)

virtual

Attempts to delete a host by (subnet6-id, identifier, identifier-type)

This method supports v6 only.

Todo:: : Not implemented.

Parameters

subnet_id	IPv6 Subnet identifier.
identifier_type	Identifier type.
identifier_begin	Pointer to a beginning of a buffer containing an identifier.
identifier_len	Identifier length.

Returns: true if deletion was successful, false otherwise.

Todo:: : Implement host removal

Implements isc::dhcp::BaseHostDataSource.

Definition at line 644 of file cfg_hosts.cc.

References isc_throw.

◆ delAll4()

size_t isc::dhcp::CfgHosts::delAll4 ( const SubnetID & subnet_id )

virtual

Attempts to delete all hosts for a given IPv4 subnet.

Parameters

subnet_id Identifier of the subnet for which reservation should be deleted.

Returns: Number of deleted hosts.

Definition at line 604 of file cfg_hosts.cc.

References isc::dhcp::HOSTS_DBG_TRACE, isc::dhcp::hosts_logger, and LOG_DEBUG.

◆ delAll6()

size_t isc::dhcp::CfgHosts::delAll6 ( const SubnetID & subnet_id )

virtual

Attempts to delete all hosts for a given IPv6 subnet.

Parameters

subnet_id Identifier of the subnet for which reservation should be deleted.

Returns: Number of deleted hosts.

Definition at line 626 of file cfg_hosts.cc.

References isc::dhcp::HOSTS_DBG_TRACE, isc::dhcp::hosts_logger, and LOG_DEBUG.

◆ get4() [1/3]

ConstHostPtr isc::dhcp::CfgHosts::get4	(	const SubnetID &	subnet_id,
		const asiolink::IOAddress &	address
	)		const

virtual

Returns a host connected to the IPv4 subnet and having a reservation for a specified IPv4 address.

Parameters

subnet_id	Subnet identifier.
address	reserved IPv4 address.

Returns: Const Host object using a specified IPv4 address.

Implements isc::dhcp::BaseHostDataSource.

Definition at line 201 of file cfg_hosts.cc.

References isc::dhcp::HOSTS_DBG_RESULTS, isc::dhcp::HOSTS_DBG_TRACE, isc::dhcp::hosts_logger, LOG_DEBUG, and isc::asiolink::IOAddress::toText().

Here is the call graph for this function:

◆ get4() [2/3]

HostPtr isc::dhcp::CfgHosts::get4	(	const SubnetID &	subnet_id,
		const Host::IdentifierType &	identifier_type,
		const uint8_t *	identifier_begin,
		const size_t	identifier_len
	)

virtual

Returns a host connected to the IPv4 subnet.

Parameters

subnet_id	Subnet identifier.
identifier_type	Identifier type.
identifier_begin	Pointer to a beginning of a buffer containing an identifier.
identifier_len	Identifier length.

Returns: Non-const Host object for which reservation has been made using the specified identifier.

Implements isc::dhcp::WritableHostDataSource.

Definition at line 192 of file cfg_hosts.cc.

◆ get4() [3/3]

ConstHostPtr isc::dhcp::CfgHosts::get4	(	const SubnetID &	subnet_id,
		const Host::IdentifierType &	identifier_type,
		const uint8_t *	identifier_begin,
		const size_t	identifier_len
	)		const

virtual

Returns a host connected to the IPv4 subnet.

Parameters

subnet_id	Subnet identifier.
identifier_type	Identifier type.
identifier_begin	Pointer to a beginning of a buffer containing an identifier.
identifier_len	Identifier length.

Returns: Const Host object for which reservation has been made using the specified identifier.

Implements isc::dhcp::BaseHostDataSource.

Definition at line 183 of file cfg_hosts.cc.

◆ get6() [1/6]

HostPtr isc::dhcp::CfgHosts::get6	(	const asiolink::IOAddress &	prefix,
		const uint8_t	prefix_len
	)

virtual

Returns a host using the specified IPv6 prefix.

Parameters

prefix	IPv6 prefix for which the `Host` object is searched.
prefix_len	IPv6 prefix length.

Returns: Non-const Host object for which specified prefix is reserved.

Implements isc::dhcp::WritableHostDataSource.

Definition at line 248 of file cfg_hosts.cc.

◆ get6() [2/6]

ConstHostPtr isc::dhcp::CfgHosts::get6	(	const asiolink::IOAddress &	prefix,
		const uint8_t	prefix_len
	)		const

virtual

Returns a host using the specified IPv6 prefix.

Parameters

prefix	IPv6 prefix for which the `Host` object is searched.
prefix_len	IPv6 prefix length.

Returns: Const Host object for which specified prefix is reserved.

Implements isc::dhcp::BaseHostDataSource.

Definition at line 243 of file cfg_hosts.cc.

◆ get6() [3/6]

HostPtr isc::dhcp::CfgHosts::get6	(	const SubnetID &	subnet_id,
		const asiolink::IOAddress &	address
	)

virtual

Returns a host connected to the IPv6 subnet and having a reservation for a specified IPv6 address.

Parameters

subnet_id	Subnet identifier.
address	reserved IPv6 address.

Returns: Const Host object using a specified IPv6 address.

Implements isc::dhcp::WritableHostDataSource.

Definition at line 260 of file cfg_hosts.cc.

◆ get6() [4/6]

ConstHostPtr isc::dhcp::CfgHosts::get6	(	const SubnetID &	subnet_id,
		const asiolink::IOAddress &	address
	)		const

virtual

Returns a host connected to the IPv6 subnet and having a reservation for a specified IPv6 address.

Parameters

subnet_id	Subnet identifier.
address	reserved IPv6 address.

Returns: Const Host object using a specified IPv6 address.

Implements isc::dhcp::BaseHostDataSource.

Definition at line 253 of file cfg_hosts.cc.

◆ get6() [5/6]

HostPtr isc::dhcp::CfgHosts::get6	(	const SubnetID &	subnet_id,
		const Host::IdentifierType &	identifier_type,
		const uint8_t *	identifier_begin,
		const size_t	identifier_len
	)

virtual

Returns a host connected to the IPv6 subnet.

Parameters

subnet_id	Subnet identifier.
identifier_type	Identifier type.
identifier_begin	Pointer to a beginning of a buffer containing an identifier.
identifier_len	Identifier length.

Returns: Non-const Host object for which reservation has been made using the specified identifier.

Implements isc::dhcp::WritableHostDataSource.

Definition at line 234 of file cfg_hosts.cc.

◆ get6() [6/6]

ConstHostPtr isc::dhcp::CfgHosts::get6	(	const SubnetID &	subnet_id,
		const Host::IdentifierType &	identifier_type,
		const uint8_t *	identifier_begin,
		const size_t	identifier_len
	)		const

virtual

Returns a host connected to the IPv6 subnet.

Parameters

subnet_id	Subnet identifier.
identifier_type	Identifier type.
identifier_begin	Pointer to a beginning of a buffer containing an identifier.
identifier_len	Identifier length.

Returns: Const Host object for which reservation has been made using the specified identifier.

Implements isc::dhcp::BaseHostDataSource.

Definition at line 225 of file cfg_hosts.cc.

◆ getAll() [1/2]

HostCollection isc::dhcp::CfgHosts::getAll	(	const Host::IdentifierType &	identifier_type,
		const uint8_t *	identifier_begin,
		const size_t	identifier_len
	)

virtual

Non-const version of the getAll const method.

This method returns all Host objects which represent reservations for a specified identifier. This method may return multiple hosts because a particular client may have reservations in multiple subnets.

Parameters

identifier_type	One of the supported identifier types.
identifier_begin	Pointer to a beginning of a buffer containing an identifier.
identifier_len	Identifier length.

Returns: Collection of non-const Host objects.

Implements isc::dhcp::WritableHostDataSource.

Definition at line 39 of file cfg_hosts.cc.

◆ getAll() [2/2]

ConstHostCollection isc::dhcp::CfgHosts::getAll	(	const Host::IdentifierType &	identifier_type,
		const uint8_t *	identifier_begin,
		const size_t	identifier_len
	)		const

virtual

Return all hosts connected to any subnet for which reservations have been made using a specified identifier.

This method returns all Host objects which represent reservations for a specified identifier. This method may return multiple hosts because a particular client may have reservations in multiple subnets.

Parameters

identifier_type	One of the supported identifier types.
identifier_begin	Pointer to a beginning of a buffer containing an identifier.
identifier_len	Identifier length.

Returns: Collection of const Host objects.

Implements isc::dhcp::BaseHostDataSource.

Definition at line 27 of file cfg_hosts.cc.

◆ getAll4() [1/2]

HostCollection isc::dhcp::CfgHosts::getAll4 ( const asiolink::IOAddress & address )

virtual

Returns a collection of hosts using the specified IPv4 address.

This method may return multiple Host objects if they are connected to different subnets.

Parameters

address IPv4 address for which the Host object is searched.

Returns: Collection of const Host objects.

Implements isc::dhcp::WritableHostDataSource.

Definition at line 59 of file cfg_hosts.cc.

◆ getAll4() [2/2]

ConstHostCollection isc::dhcp::CfgHosts::getAll4 ( const asiolink::IOAddress & address ) const

virtual

Returns a collection of hosts using the specified IPv4 address.

This method may return multiple Host objects if they are connected to different subnets.

Parameters

address IPv4 address for which the Host object is searched.

Returns: Collection of const Host objects.

Implements isc::dhcp::BaseHostDataSource.

Definition at line 50 of file cfg_hosts.cc.

◆ getAll6() [1/2]

HostCollection isc::dhcp::CfgHosts::getAll6 ( const asiolink::IOAddress & address )

virtual

Returns a collection of hosts using the specified IPv6 address.

This method may return multiple Host objects if they are connected to different subnets.

Parameters

address IPv6 address for which the Host object is searched.

Returns: Collection of const Host objects.

Definition at line 77 of file cfg_hosts.cc.

◆ getAll6() [2/2]

ConstHostCollection isc::dhcp::CfgHosts::getAll6 ( const asiolink::IOAddress & address ) const

virtual

Returns a collection of hosts using the specified IPv6 address.

This method may return multiple Host objects if they are connected to different subnets.

Parameters

address IPv6 address for which the Host object is searched.

Returns: Collection of const Host objects.

Definition at line 68 of file cfg_hosts.cc.

◆ getType()

virtual std::string isc::dhcp::CfgHosts::getType ( ) const

inlinevirtual

Return backend type.

Returns the type of the backend (e.g. "mysql", "memfile" etc.)

Returns: Type of the backend.

Implements isc::dhcp::BaseHostDataSource.

Definition at line 293 of file cfg_hosts.h.

◆ toElement()

ElementPtr isc::dhcp::CfgHosts::toElement ( ) const

virtual

Unparse a configuration object.

host reservation lists are not autonomous so they are not returned directly but with the subnet where they are declared as:

[
  { "id": 123, "reservations": [ <resv1>, <resv2> ] },
  { "id": 456, "reservations": [ <resv3 ] },
  ...
]

isc::dhcp::CfgHostsList can be used to handle this

Returns: a pointer to unparsed configuration

Implements isc::data::CfgToElement.

Definition at line 654 of file cfg_hosts.cc.

References isc_throw.

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

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ ~CfgHosts()

Member Function Documentation

◆ add()

◆ del()

◆ del4()

◆ del6()

◆ delAll4()

◆ delAll6()

◆ get4() [1/3]

◆ get4() [2/3]

◆ get4() [3/3]

◆ get6() [1/6]

◆ get6() [2/6]

◆ get6() [3/6]

◆ get6() [4/6]

◆ get6() [5/6]

◆ get6() [6/6]

◆ getAll() [1/2]

◆ getAll() [2/2]

◆ getAll4() [1/2]

◆ getAll4() [2/2]

◆ getAll6() [1/2]

◆ getAll6() [2/2]

◆ getType()

◆ toElement()