Represents option definitions used by the DHCP server. More...

#include <cfg_option_def.h>

Inheritance diagram for isc::dhcp::CfgOptionDef:

Public Member Functions
void	add (const OptionDefinitionPtr &def)
	Add new option definition. More...

void	copyTo (CfgOptionDef &new_config) const
	Copies this configuration to a new configuration. More...

uint64_t	del (const uint64_t id)
	Deletes all option definitions having a given database id. More...

OptionDefinitionPtr	get (const std::string &option_space, const uint16_t option_code) const
	Return option definition for a particular option space and code. More...

OptionDefinitionPtr	get (const std::string &option_space, const std::string &option_name) const
	Return option definition for the particular option space and name. More...

OptionDefContainerPtr	getAll (const std::string &option_space) const
	Return option definitions for particular option space. More...

const OptionDefSpaceContainer &	getContainer () const
	Returns reference to container holding option definitions. More...

void	merge (CfgOptionDef &other)
	Merges specified option definitions from a configuration into this configuration. More...

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

isc::data::ElementPtr	toElementWithMetadata (const bool include_metadata) const
	Unparse a configuration object with optionally including the metadata. More...

Methods and operators used for comparing objects.
bool	equals (const CfgOptionDef &other) const
	Check if configuration is equal to other configuration. More...

bool	operator== (const CfgOptionDef &other) const
	Equality operator. More...

bool	operator!= (const CfgOptionDef &other) const
	Inequality operator. More...

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

Detailed Description

Represents option definitions used by the DHCP server.

This class provides methods to add and retrieve option definitions specified by the administrator for the DHCP server. Option definitions specify formats of the options. This class doesn't hold information about the data being carried by the options.

Option definitions are grouped by option spaces. The option space is identified by the unique name which is specified as a string. The following names: "dhcp4" and "dhcp6" are reserved, though. They are names of option spaces used for standard top-level DHCPv4 and DHCPv6 options respectively.

Definition at line 30 of file cfg_option_def.h.

Member Function Documentation

void isc::dhcp::CfgOptionDef::add ( const OptionDefinitionPtr & def )

Add new option definition.

Parameters

def	option definition to be added.

Exceptions

isc::dhcp::DuplicateOptionDefinition	when the particular option definition already exists.
isc::dhcp::MalformedOptionDefinition	when the pointer to an option definition is NULL.
isc::BadValue	when the option space name is empty or when trying to override the standard option (in dhcp4 or dhcp6 option space).

Definition at line 79 of file cfg_option_def.cc.

References isc_throw.

Referenced by copyTo(), and merge().

void isc::dhcp::CfgOptionDef::copyTo ( CfgOptionDef & new_config ) const

Copies this configuration to a new configuration.

This method copies the option definitions stores in the configuration to an object passed as parameter. There are no shared objects or pointers between the original object and a copy.

Parameters

[out] new_config An object to which the configuration will be copied.

Definition at line 21 of file cfg_option_def.cc.

References add(), and isc::dhcp::OptionSpaceContainer< ContainerType, ItemType, Selector >::clearItems().

Referenced by merge().

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uint64_t isc::dhcp::CfgOptionDef::del ( const uint64_t id )

Deletes all option definitions having a given database id.

Note that there are cases when there will be multiple option definitions having the same id (typically id of 0). When configuration backend is in use it sets the unique ids from the database. In cases when the configuration backend is not used, the ids default to 0. Passing the id of 0 would result in deleting all option definitions that were not added via the database.

Parameters

id	Identifier of the option definitions to be deleted.

Returns: Number of deleted option definitions.

Definition at line 162 of file cfg_option_def.cc.

bool isc::dhcp::CfgOptionDef::equals ( const CfgOptionDef & other ) const

Check if configuration is equal to other configuration.

Parameters

other An object holding configuration to compare to.

Returns: true if configurations are equal, false otherwise.

Definition at line 39 of file cfg_option_def.cc.

References get(), getAll(), and isc::dhcp::OptionSpaceContainer< ContainerType, ItemType, Selector >::getOptionSpaceNames().

Referenced by operator!=(), and operator==().

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OptionDefinitionPtr isc::dhcp::CfgOptionDef::get	(	const std::string &	option_space,
		const uint16_t	option_code
	)		const

Return option definition for a particular option space and code.

Parameters

option_space	option space.
option_code	option code.

Returns: An option definition or NULL pointer if option definition has not been found.

Definition at line 118 of file cfg_option_def.cc.

Referenced by equals(), and merge().

OptionDefinitionPtr isc::dhcp::CfgOptionDef::get	(	const std::string &	option_space,
		const std::string &	option_name
	)		const

Return option definition for the particular option space and name.

Parameters

option_space	option space.
option_name	option name.

Returns: An option definition or NULL pointer if option definition has not been found.

Definition at line 140 of file cfg_option_def.cc.

OptionDefContainerPtr isc::dhcp::CfgOptionDef::getAll ( const std::string & option_space ) const

Return option definitions for particular option space.

Parameters

option_space option space.

Returns: Pointer to the collection of option definitions for the particular option space. The option collection is empty if no option exists for the option space specified.

Todo:: Does option space require any validation here?

Definition at line 112 of file cfg_option_def.cc.

Referenced by equals().

const OptionDefSpaceContainer& isc::dhcp::CfgOptionDef::getContainer ( ) const

inline

Returns reference to container holding option definitions.

Definition at line 131 of file cfg_option_def.h.

Referenced by merge().

void isc::dhcp::CfgOptionDef::merge ( CfgOptionDef & other )

Merges specified option definitions from a configuration into this configuration.

This method merges the option definitions from the other configuration into this configuration. The merged set of definitions is created as follows:

Iterator over the definitions in each name space in this configuration: If either the definition's name or code are defined in other then skip over the definition otherwise add it to other.

Replace this configuration's definitions with the definitions in other using copyTo().

Parameters

other option definitions to merge in.

Warning: The merge operation affects other. Therefore, the caller must not rely on the data held in the other object after the call to merge. Also, the data held in other must not be modified after the call to merge because it may affect the merged configuration.

Definition at line 232 of file cfg_option_def.cc.

References add(), copyTo(), get(), getContainer(), and isc::dhcp::OptionSpaceContainer< ContainerType, ItemType, Selector >::getOptionSpaceNames().

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