this class parses a single subnet More...

#include <dhcp_parsers.h>

Inheritance diagram for isc::dhcp::SubnetConfigParser:

Public Member Functions
	SubnetConfigParser (uint16_t family, bool check_iface=true)
	constructor

virtual	~SubnetConfigParser ()
	virtual destructor (does nothing)

Public Member Functions inherited from isc::data::SimpleParser
uint16_t	getUint16 (isc::data::ConstElementPtr scope, const std::string &name)
	Returns a value converted to uint16_t.

uint32_t	getUint32 (isc::data::ConstElementPtr scope, const std::string &name)
	Returns a value converted to uint32_t.

uint8_t	getUint8 (ConstElementPtr scope, const std::string &name)
	Get an uint8_t value.

const isc::util::Triplet< uint32_t >	parseIntTriplet (const data::ConstElementPtr &scope, const std::string &name)
	Parses an integer triplet.

Protected Member Functions
virtual boost::shared_ptr< OptionDataListParser >	createOptionDataListParser () const
	Returns an instance of the `OptionDataListParser` to be used in parsing the option-data structure.

virtual boost::shared_ptr< PoolsListParser >	createPoolsListParser () const =0
	Returns an instance of the `PoolsListParser` to be used in parsing the address pools.

void	createSubnet (isc::data::ConstElementPtr data)
	Create a new subnet using a data from child parsers.

virtual void	initSubnet (isc::data::ConstElementPtr params, isc::asiolink::IOAddress addr, uint8_t len)=0
	Instantiates the subnet based on a given IP prefix and prefix length.

SubnetPtr	parse (isc::data::ConstElementPtr subnet, bool encapsulate_options)
	parses a subnet description and returns Subnet{4,6} structure

Protected Member Functions inherited from isc::dhcp::BaseNetworkParser
void	parseAllocatorParams (const data::ConstElementPtr &network_data, NetworkPtr &network)
	Parses parameters pertaining to allocator selection.

void	parseCacheParams (const data::ConstElementPtr &network_data, NetworkPtr &network)
	Parses parameters related to lease cache settings.

void	parseCommon (const data::ConstElementPtr &network_data, NetworkPtr &network)
	Parses common parameters.

void	parseDdnsParams (const data::ConstElementPtr &network_data, NetworkPtr &network)
	Parses parameters pertaining to DDNS behavior.

void	parseOfferLft (const data::ConstElementPtr &network_data, Network4Ptr &network)
	Parses offer-lifetime parameter (v4 only)

void	parsePdAllocatorParams (const data::ConstElementPtr &network_data, Network6Ptr &network)
	Parses parameters pertaining to prefix delegation allocator selection.

void	parseTeePercents (const data::ConstElementPtr &network_data, NetworkPtr &network)
	Parses parameters related to "percent" timers settings.

Protected Member Functions inherited from isc::data::SimpleParser
template<typename target_type , target_type convert>
target_type	getAndConvert (isc::data::ConstElementPtr scope, const std::string &name, const std::string &type_name)
	Returns a converted value from a scope.

template<typename int_type >
int_type	getIntType (isc::data::ConstElementPtr scope, const std::string &name)
	Returns an integer value with range checking from a scope.

Protected Attributes
uint16_t	address_family_
	Address family: `AF_INET` or `AF_INET6`.

bool	check_iface_
	Check if the specified interface exists in the system.

PoolStoragePtr	pools_
	Storage for pools belonging to this subnet.

isc::dhcp::Network::RelayInfoPtr	relay_info_
	Pointer to relay information.

isc::dhcp::SubnetPtr	subnet_
	Pointer to the created subnet object.

Additional Inherited Members
Public Types inherited from isc::dhcp::BaseNetworkParser
typedef std::function< void(const isc::dhcp::ClientClass &)	ClassAdderFunc)

Static Public Member Functions inherited from isc::dhcp::BaseNetworkParser
static void	getAdditionalClassesElem (data::ConstElementPtr params, ClassAdderFunc adder_func)
	Fetches the element for either 'evaluate-additional-classes' or deprecated 'require-client-classes'.

Static Public Member Functions inherited from isc::data::SimpleParser
static void	checkKeywords (const SimpleKeywords &keywords, isc::data::ConstElementPtr scope)
	Checks acceptable keywords with their expected type.

static void	checkRequired (const SimpleRequiredKeywords &required, isc::data::ConstElementPtr scope)
	Checks that all required keywords are present.

static size_t	deriveParams (isc::data::ConstElementPtr parent, isc::data::ElementPtr child, const ParamsList &params)
	Derives (inherits) parameters from parent scope to a child.

static isc::asiolink::IOAddress	getAddress (const ConstElementPtr &scope, const std::string &name)
	Returns a IOAddress parameter from a scope.

static bool	getBoolean (isc::data::ConstElementPtr scope, const std::string &name)
	Returns a boolean parameter from a scope.

static double	getDouble (const ConstElementPtr &scope, const std::string &name)
	Returns a floating point parameter from a scope.

static int64_t	getInteger (isc::data::ConstElementPtr scope, const std::string &name)
	Returns an integer parameter from a scope.

static int64_t	getInteger (isc::data::ConstElementPtr scope, const std::string &name, int64_t min, int64_t max)
	Returns an integer parameter from a scope and checks its range.

static const data::Element::Position &	getPosition (const std::string &name, const data::ConstElementPtr parent)
	Utility method that returns position of an element.

static std::string	getString (isc::data::ConstElementPtr scope, const std::string &name)
	Returns a string parameter from a scope.

static size_t	setDefaults (isc::data::ElementPtr scope, const SimpleDefaults &default_values)
	Sets the default values.

static size_t	setListDefaults (isc::data::ConstElementPtr list, const SimpleDefaults &default_values)
	Sets the default values for all entries in a list.

Detailed Description

this class parses a single subnet

There are dedicated Subnet4ConfigParser and Subnet6ConfigParser classes. They provide specialized parse() methods that return Subnet4Ptr or Subnet6Ptr.

This class parses the whole subnet definition. This class attempts to unify the code between v4 and v6 as much as possible. As a result, the flow is somewhat complex and it looks as follows:

------- Base class

/ | /--— Derived class

* SubnetXConfigParser::parse() is called.
* SubnetConfigParser::parse() is called.
* SubnetConfigParser::createSubnet() is called.
* SubnetXConfigParser::initSubnet() is called (Subnet4 or Subnet6 is instantiated here and family specific parameters are set)
Control returns to createSubnet() (step 3) and common parameters are set.

Definition at line 512 of file dhcp_parsers.h.

Constructor & Destructor Documentation

◆ SubnetConfigParser()

isc::dhcp::SubnetConfigParser::SubnetConfigParser	(	uint16_t	family,
		bool	check_iface = true )

explicit

constructor

Parameters

family	address family: `AF_INET` or `AF_INET6`
check_iface	Check if the specified interface exists in the system.

Definition at line 567 of file dhcp_parsers.cc.

References relay_info_.

◆ ~SubnetConfigParser()

virtual isc::dhcp::SubnetConfigParser::~SubnetConfigParser ( )

inlinevirtual

virtual destructor (does nothing)

Definition at line 523 of file dhcp_parsers.h.

Member Function Documentation

◆ createOptionDataListParser()

boost::shared_ptr< OptionDataListParser > isc::dhcp::SubnetConfigParser::createOptionDataListParser ( ) const

protectedvirtual

Returns an instance of the OptionDataListParser to be used in parsing the option-data structure.

This function can be overridden in the child classes to supply a custom parser for option data.

Returns: an instance of the OptionDataListParser.

Definition at line 694 of file dhcp_parsers.cc.

References address_family_.

Referenced by parse().

◆ createPoolsListParser()

virtual boost::shared_ptr< PoolsListParser > isc::dhcp::SubnetConfigParser::createPoolsListParser ( ) const

protectedpure virtual

Returns an instance of the PoolsListParser to be used in parsing the address pools.

This function can be overridden in the child classes to supply a custom parser for the pools.

Returns: an instance of the PoolsListParser.

Implemented in isc::dhcp::Subnet4ConfigParser, and isc::dhcp::Subnet6ConfigParser.

◆ createSubnet()

void isc::dhcp::SubnetConfigParser::createSubnet ( isc::data::ConstElementPtr data )

protected

Create a new subnet using a data from child parsers.

Parameters

data	Element map that describes the subnet

Exceptions

isc::dhcp::DhcpConfigError if subnet configuration parsing failed.

Definition at line 608 of file dhcp_parsers.cc.

References isc::data::SimpleParser::getString(), initSubnet(), isc::dhcp::CfgMgr::instance(), isc_throw, isc::asiolink::IOAddress::isV4(), isc::asiolink::IOAddress::isV6(), isc::data::Element::map, pools_, subnet_, and isc::Exception::what().

Referenced by parse().

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◆ initSubnet()

virtual void isc::dhcp::SubnetConfigParser::initSubnet	(	isc::data::ConstElementPtr	params,
		isc::asiolink::IOAddress	addr,
		uint8_t	len )

protectedpure virtual

Instantiates the subnet based on a given IP prefix and prefix length.

Parameters

params	configuration parameters for that subnet
addr	is the IP prefix of the subnet.
len	is the prefix length

Implemented in isc::dhcp::Subnet4ConfigParser, and isc::dhcp::Subnet6ConfigParser.

Referenced by createSubnet().

◆ parse()

SubnetPtr isc::dhcp::SubnetConfigParser::parse	(	isc::data::ConstElementPtr	subnet,
		bool	encapsulate_options )

protected

parses a subnet description and returns Subnet{4,6} structure

This method is called from specialized (Subnet4ConfigParser or Subnet6ConfigParser) classes.

Parameters

subnet	pointer to the content of subnet definition
encapsulate_options	a boolean parameter indicating if the parsed options should be encapsulated with suboptions.

Returns: a pointer to newly created subnet

Exceptions

isc::DhcpConfigError if subnet configuration parsing failed.

Definition at line 575 of file dhcp_parsers.cc.

References address_family_, createOptionDataListParser(), createSubnet(), isc_throw, isc::dhcp::RelayInfoParser::parse(), relay_info_, subnet_, isc::dhcp::Option::V4, isc::dhcp::Option::V6, and isc::Exception::what().

Referenced by isc::dhcp::Subnet4ConfigParser::parse(), and isc::dhcp::Subnet6ConfigParser::parse().

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Member Data Documentation

◆ address_family_

uint16_t isc::dhcp::SubnetConfigParser::address_family_

protected

Address family: AF_INET or AF_INET6.

Definition at line 584 of file dhcp_parsers.h.

Referenced by createOptionDataListParser(), and parse().

◆ check_iface_

bool isc::dhcp::SubnetConfigParser::check_iface_

protected

Check if the specified interface exists in the system.

Definition at line 590 of file dhcp_parsers.h.

Referenced by isc::dhcp::Subnet4ConfigParser::initSubnet(), and isc::dhcp::Subnet6ConfigParser::initSubnet().

◆ pools_

PoolStoragePtr isc::dhcp::SubnetConfigParser::pools_

protected

Storage for pools belonging to this subnet.

Definition at line 578 of file dhcp_parsers.h.

Referenced by createSubnet(), isc::dhcp::Subnet4ConfigParser::parse(), and isc::dhcp::Subnet6ConfigParser::parse().

◆ relay_info_

isc::dhcp::Network::RelayInfoPtr isc::dhcp::SubnetConfigParser::relay_info_

protected

Pointer to relay information.

Definition at line 587 of file dhcp_parsers.h.

Referenced by SubnetConfigParser(), isc::dhcp::Subnet4ConfigParser::parse(), isc::dhcp::Subnet6ConfigParser::parse(), and parse().

◆ subnet_

isc::dhcp::SubnetPtr isc::dhcp::SubnetConfigParser::subnet_

protected

Pointer to the created subnet object.

Definition at line 581 of file dhcp_parsers.h.

Referenced by createSubnet(), isc::dhcp::Subnet4ConfigParser::initSubnet(), isc::dhcp::Subnet6ConfigParser::initSubnet(), isc::dhcp::Subnet4ConfigParser::parse(), isc::dhcp::Subnet6ConfigParser::parse(), and parse().

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

Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ SubnetConfigParser()

◆ ~SubnetConfigParser()

Member Function Documentation

◆ createOptionDataListParser()

◆ createPoolsListParser()

◆ createSubnet()

◆ initSubnet()

◆ parse()

Member Data Documentation

◆ address_family_

◆ check_iface_

◆ pools_

◆ relay_info_

◆ subnet_