Embodies the "life-cycle" required to carry out a DDNS update. More...

#include <nc_trans.h>

Inheritance diagram for isc::d2::NameChangeTransaction:

Public Member Functions
	NameChangeTransaction (asiolink::IOServicePtr &io_service, dhcp_ddns::NameChangeRequestPtr &ncr, DdnsDomainPtr &forward_domain, DdnsDomainPtr &reverse_domain, D2CfgMgrPtr &cfg_mgr)
	Constructor.

virtual	~NameChangeTransaction ()
	Destructor.

const dns::RRType &	getAddressRRType () const
	Returns the DHCP data type for the lease address.

const DnsServerInfoPtr &	getCurrentServer () const
	Fetches the currently selected server.

const DNSClientPtr &	getDNSClient () const
	Fetches the DNSClient instance.

const D2UpdateMessagePtr &	getDnsUpdateRequest () const
	Fetches the current DNS update request packet.

const D2UpdateMessagePtr &	getDnsUpdateResponse () const
	Fetches the most recent DNS update response packet.

DNSClient::Status	getDnsUpdateStatus () const
	Fetches the most recent DNS update status.

bool	getForwardChangeCompleted () const
	Returns whether the forward change has completed or not.

DdnsDomainPtr &	getForwardDomain ()
	Fetches the forward DdnsDomain.

const dhcp_ddns::NameChangeRequestPtr &	getNcr () const
	Fetches the NameChangeRequest for this transaction.

dhcp_ddns::NameChangeStatus	getNcrStatus () const
	Fetches the NameChangeRequest status of the transaction.

std::string	getRequestId () const
	Fetches the request id that identifies this transaction.

bool	getReverseChangeCompleted () const
	Returns whether the reverse change has completed or not.

DdnsDomainPtr &	getReverseDomain ()
	Fetches the reverse DdnsDomain.

const TransactionKey &	getTransactionKey () const
	Fetches the unique key that identifies this transaction.

size_t	getUpdateAttempts () const
	Fetches the update attempt count for the current update.

virtual void	operator() (DNSClient::Status status)
	Serves as the DNSClient IO completion event handler.

void	startTransaction ()
	Begins execution of the transaction.

Public Member Functions inherited from isc::d2::DNSClient::Callback
virtual	~Callback ()
	Virtual destructor.

Public Member Functions inherited from isc::util::StateModel
	StateModel ()
	Constructor.

virtual	~StateModel ()
	Destructor.

bool	didModelFail () const
	Returns whether or not the model failed.

void	endModel ()
	Conducts a normal transition to the end of the model.

std::string	getContextStr () const
	Convenience method which returns a string rendition of the current state and next event.

unsigned int	getCurrState () const
	Fetches the model's current state.

std::string	getEventLabel (const int event) const
	Fetches the label associated with an event value.

unsigned int	getLastEvent () const
	Fetches the model's last event.

unsigned int	getNextEvent () const
	Fetches the model's next event.

std::string	getPrevContextStr () const
	Convenience method which returns a string rendition of the previous state and last event.

unsigned int	getPrevState () const
	Fetches the model's previous state.

std::string	getStateLabel (const int state) const
	Fetches the label associated with an state value.

bool	isModelDone () const
	Returns whether or not the model has finished execution.

bool	isModelNew () const
	Returns whether or not the model is new.

bool	isModelPaused () const
	Returns whether or not the model is paused.

bool	isModelRunning () const
	Returns whether or not the model is running.

bool	isModelWaiting () const
	Returns whether or not the model is waiting.

void	nopStateHandler ()
	An empty state handler.

virtual void	runModel (unsigned int event)
	Processes events through the state model.

void	startModel (const int start_state)
	Begins execution of the model.

void	unpauseModel ()
	Unpauses state model.

Static Public Attributes
static const unsigned int	DNS_UPDATE_DEFAULT_TIMEOUT = 100
	Default time to assign to a single DNS update.

static const int	IO_COMPLETED_EVT = SM_DERIVED_EVENT_MIN + 5
	Issued when a DNS update packet exchange has completed.

static const unsigned int	MAX_UPDATE_TRIES_PER_SERVER = 3
	Maximum times to attempt a single update on a given server.

static const int	NCT_DERIVED_EVENT_MIN = SM_DERIVED_EVENT_MIN + 101
	Value at which custom events in a derived class should begin.

static const int	NCT_DERIVED_STATE_MIN = SM_DERIVED_STATE_MIN + 101
	Value at which custom states in a derived class should begin.

static const int	NO_MORE_SERVERS_EVT =SM_DERIVED_EVENT_MIN + 4
	Issued when there are no more servers from which to select.

static const int	PROCESS_TRANS_FAILED_ST = SM_DERIVED_STATE_MIN + 5
	State which processes an unsuccessful transaction conclusion.

static const int	PROCESS_TRANS_OK_ST = SM_DERIVED_STATE_MIN + 4
	State which processes successful transaction conclusion.

static const int	READY_ST = SM_DERIVED_STATE_MIN + 1
	State from which a transaction is started.

static const int	SELECT_SERVER_EVT = SM_DERIVED_EVENT_MIN + 1
	Issued when a server needs to be selected.

static const int	SELECTING_FWD_SERVER_ST = SM_DERIVED_STATE_MIN + 2
	State in which forward DNS server selection is done.

static const int	SELECTING_REV_SERVER_ST = SM_DERIVED_STATE_MIN + 3
	State in which reverse DNS server selection is done.

static const int	SERVER_IO_ERROR_EVT = SM_DERIVED_EVENT_MIN + 3
	Issued when an update fails due to an IO error.

static const int	SERVER_SELECTED_EVT = SM_DERIVED_EVENT_MIN + 2
	Issued when a server has been selected.

static const int	UPDATE_FAILED_EVT = SM_DERIVED_EVENT_MIN + 7
	Issued when the attempted update fails to complete.

static const int	UPDATE_OK_EVT = SM_DERIVED_EVENT_MIN + 6
	Issued when the attempted update successfully completed.

Static Public Attributes inherited from isc::util::StateModel
static const int	END_EVT = 2
	Event issued to end the model execution.

static const int	END_ST = 1
	Final state, all the state model has reached its conclusion.

static const int	FAIL_EVT = 3
	Event issued to abort the model execution.

static const int	NEW_ST = 0
	State that a state model is in immediately after construction.

static const int	NOP_EVT = 0
	Signifies that no event has occurred.

static const int	SM_DERIVED_EVENT_MIN = 11
	Value at which custom events in a derived class should begin.

static const int	SM_DERIVED_STATE_MIN = 11
	Value at which custom states in a derived class should begin.

static const int	START_EVT = 1
	Event issued to start the model execution.

Protected Member Functions
void	addDhcidRdata (dns::RRsetPtr &rrset)
	Adds an RData for the lease client's DHCID to the given RRset.

void	addLeaseAddressRdata (dns::RRsetPtr &rrset)
	Adds an RData for the lease address to the given RRset.

void	addPtrRdata (dns::RRsetPtr &rrset)
	Adds an RData for the lease FQDN to the given RRset.

void	clearDnsUpdateRequest ()
	Destroys the current update request packet.

void	clearDnsUpdateResponse ()
	Destroys the current update response packet.

void	clearUpdateAttempts ()
	Resets the update attempts count.

virtual void	defineEvents ()
	Adds events defined by NameChangeTransaction to the event set.

virtual void	defineStates ()
	Adds states defined by NameChangeTransaction to the state set.

const asiolink::IOServicePtr &	getIOService ()
	Fetches the IOService the transaction uses for IO processing.

void	initServerSelection (const DdnsDomainPtr &domain)
	Initializes server selection from the given DDNS domain.

virtual void	onModelFailure (const std::string &explanation)
	Handler for fatal model execution errors.

virtual D2UpdateMessagePtr	prepNewRequest (DdnsDomainPtr domain)
	Creates a new DNS update request based on the given domain.

std::string	responseString () const
	Returns a string version of the current response status and rcode.

void	retryTransition (const int fail_to_state)
	Determines the state and next event based on update attempts.

bool	selectNextServer ()
	Selects the next server in the current server list.

bool	selectTSIGKey ()
	Selects the TSIG key.

virtual void	sendUpdate (const std::string &comment="")
	Send the update request to the current server.

void	setDnsUpdateRequest (D2UpdateMessagePtr &request)
	Sets the update request packet to the given packet.

void	setDnsUpdateResponse (D2UpdateMessagePtr &response)
	Sets the update response packet to the given packet.

void	setDnsUpdateStatus (const DNSClient::Status &status)
	Sets the update status to the given status value.

void	setForwardChangeCompleted (const bool value)
	Sets the forward change completion flag to the given value.

void	setNcrStatus (const dhcp_ddns::NameChangeStatus &status)
	Sets the status of the transaction's NameChangeRequest.

void	setReverseChangeCompleted (const bool value)
	Sets the reverse change completion flag to the given value.

void	setUpdateAttempts (const size_t value)
	Sets the update attempt count to the given value.

std::string	transactionOutcomeString () const
	Returns a string version of transaction outcome.

virtual void	verifyEvents ()
	Validates the contents of the set of events.

virtual void	verifyStates ()
	Validates the contents of the set of states.

Protected Member Functions inherited from isc::util::StateModel
void	abortModel (const std::string &explanation)
	Aborts model execution.

void	defineEvent (unsigned int value, const std::string &label)
	Adds an event value and associated label to the set of events.

void	defineState (unsigned int value, const std::string &label, StateHandler handler, const StatePausing &state_pausing=STATE_PAUSE_NEVER)
	Adds an state value and associated label to the set of states.

bool	doOnEntry ()
	Checks if on entry flag is true.

bool	doOnExit ()
	Checks if on exit flag is true.

const EventPtr &	getEvent (unsigned int value)
	Fetches the event referred to by value.

const StatePtr	getState (unsigned int value)
	Fetches the state referred to by value.

const StatePtr	getStateInternal (unsigned int value)
	Fetches the state referred to by value.

void	initDictionaries ()
	Initializes the event and state dictionaries.

void	postNextEvent (unsigned int event)
	Sets the next event to the given event value.

void	setState (unsigned int state)
	Sets the current state to the given state value.

void	transition (unsigned int state, unsigned int event)
	Sets up the model to transition into given state with a given event.

Detailed Description

Embodies the "life-cycle" required to carry out a DDNS update.

NameChangeTransaction is the base class that provides the common state model mechanics and services performing the DNS updates needed to carry out a DHCP_DDNS request as described by a NameChangeRequest. It is derived from StateModel which supplies a simple, general purpose FSM implementation.

Upon construction, each transaction has all of the information and resources required to carry out its assigned request, including the list(s) of DNS server(s) needed. It is responsible for knowing what conversations it must have with which servers and in the order necessary to fulfill the request. Upon fulfillment of the request, the transaction's work is complete and it is destroyed.

Fulfillment of the request is carried out through the performance of the transaction's state model. Using a state driven implementation accounts for the conditional processing flow necessary to meet the DDNS RFCs as well as the asynchronous nature of IO with DNS servers.

Derivations of the class are responsible for defining the state model and conversations necessary to carry out the specific of request.

Conversations with DNS servers are done through the use of the DNSClient class. The DNSClient provides a IOService-based means a service which performs a single, packet exchange with a given DNS server. It sends a single update to the server and returns the response, asynchronously, through a callback. At each point in a transaction's state model, where an update is to be sent, the model "suspends" until notified by the DNSClient via the callback. Suspension is done by posting a StateModel::NOP_EVT as the next event, stopping the state model execution.

Resuming state model execution when a DNS update completes is done by a call to StateModel::runStateModel() from within the DNSClient callback, with an event value of IO_COMPLETED_EVT (described below).

This class defines a set of events and states that are a common to all transactions. Each derivation may add define additional states and events as needed, but it must support the common set. NameChangeTransaction does not supply any state handlers. These are the sole responsibility of derivations.

Definition at line 77 of file nc_trans.h.

Constructor & Destructor Documentation

◆ NameChangeTransaction()

isc::d2::NameChangeTransaction::NameChangeTransaction	(	asiolink::IOServicePtr &	io_service,
		dhcp_ddns::NameChangeRequestPtr &	ncr,
		DdnsDomainPtr &	forward_domain,
		DdnsDomainPtr &	reverse_domain,
		D2CfgMgrPtr &	cfg_mgr )

Constructor.

Instantiates a transaction that is ready to be started.

Parameters

io_service	IO service to be used for IO processing
ncr	is the NameChangeRequest to fulfill
forward_domain	is the domain to use for forward DNS updates
reverse_domain	is the domain to use for reverse DNS updates
cfg_mgr	reference to the current configuration manager

Exceptions

NameChangeTransactionError if given an null request, if forward change is enabled but forward domain is null, if reverse change is enabled but reverse domain is null.

Todo: if io_service is NULL we are multi-threading and should instantiate our own

Definition at line 68 of file nc_trans.cc.

References isc_throw.

◆ ~NameChangeTransaction()

isc::d2::NameChangeTransaction::~NameChangeTransaction ( )

virtual

Destructor.

Definition at line 107 of file nc_trans.cc.

Member Function Documentation

◆ addDhcidRdata()

void isc::d2::NameChangeTransaction::addDhcidRdata ( dns::RRsetPtr & rrset )

protected

Adds an RData for the lease client's DHCID to the given RRset.

Creates an in::DHCID() RData instance from the NCR DHCID and adds it to the given RRset.

Parameters

rrset RRset to which to add the RData

Exceptions

NameChangeTransactionError if RData cannot be constructed or the RData cannot be added to the given RRset.

Definition at line 389 of file nc_trans.cc.

References isc_throw, and isc::Exception::what().

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◆ addLeaseAddressRdata()

void isc::d2::NameChangeTransaction::addLeaseAddressRdata ( dns::RRsetPtr & rrset )

protected

Adds an RData for the lease address to the given RRset.

Creates an in::A() or in:AAAA() RData instance from the NCR lease address and adds it to the given RRset.

Parameters

rrset RRset to which to add the RData

Exceptions

NameChangeTransactionError if RData cannot be constructed or the RData cannot be added to the given RRset.

Definition at line 367 of file nc_trans.cc.

References isc_throw, and isc::Exception::what().

Referenced by isc::d2::CheckExistsAddTransaction::buildAddFwdAddressRequest(), isc::d2::NameAddTransaction::buildAddFwdAddressRequest(), isc::d2::CheckExistsRemoveTransaction::buildRemoveFwdAddressRequest(), isc::d2::NameRemoveTransaction::buildRemoveFwdAddressRequest(), isc::d2::CheckExistsAddTransaction::buildReplaceFwdAddressRequest(), isc::d2::NameAddTransaction::buildReplaceFwdAddressRequest(), isc::d2::SimpleAddTransaction::buildReplaceFwdAddressRequest(), and isc::d2::SimpleAddWithoutDHCIDTransaction::buildReplaceFwdAddressRequest().

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◆ addPtrRdata()

void isc::d2::NameChangeTransaction::addPtrRdata ( dns::RRsetPtr & rrset )

protected

Adds an RData for the lease FQDN to the given RRset.

Creates an in::PTR() RData instance from the NCR FQDN and adds it to the given RRset.

Parameters

rrset RRset to which to add the RData

Exceptions

NameChangeTransactionError if RData cannot be constructed or the RData cannot be added to the given RRset.

Definition at line 409 of file nc_trans.cc.

References getNcr(), isc_throw, and isc::Exception::what().

Referenced by isc::d2::CheckExistsRemoveTransaction::buildRemoveRevPtrsRequest(), isc::d2::NameRemoveTransaction::buildRemoveRevPtrsRequest(), isc::d2::CheckExistsAddTransaction::buildReplaceRevPtrsRequest(), isc::d2::NameAddTransaction::buildReplaceRevPtrsRequest(), isc::d2::SimpleAddTransaction::buildReplaceRevPtrsRequest(), and isc::d2::SimpleAddWithoutDHCIDTransaction::buildReplaceRevPtrsRequest().

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◆ clearDnsUpdateRequest()

void isc::d2::NameChangeTransaction::clearDnsUpdateRequest ( )

protected

Destroys the current update request packet.

Definition at line 304 of file nc_trans.cc.

◆ clearDnsUpdateResponse()

void isc::d2::NameChangeTransaction::clearDnsUpdateResponse ( )

protected

Destroys the current update response packet.

Definition at line 324 of file nc_trans.cc.

◆ clearUpdateAttempts()

void isc::d2::NameChangeTransaction::clearUpdateAttempts ( )

protected

Resets the update attempts count.

Definition at line 309 of file nc_trans.cc.

◆ defineEvents()

void isc::d2::NameChangeTransaction::defineEvents ( )

protectedvirtual

Adds events defined by NameChangeTransaction to the event set.

This method adds the events common to NCR transaction processing to the set of define events. It invokes the superclass's implementation first to maintain the hierarchical chain of event definition. Derivations of NameChangeTransaction must invoke its implementation in like fashion.

Exceptions

StateModelError if an event definition is invalid or a duplicate.

Reimplemented from isc::util::StateModel.

Reimplemented in isc::d2::CheckExistsAddTransaction, isc::d2::CheckExistsRemoveTransaction, isc::d2::NameAddTransaction, isc::d2::NameRemoveTransaction, isc::d2::SimpleAddTransaction, isc::d2::SimpleAddWithoutDHCIDTransaction, isc::d2::SimpleRemoveTransaction, and isc::d2::SimpleRemoveWithoutDHCIDTransaction.

Definition at line 228 of file nc_trans.cc.

References isc::util::StateModel::defineEvent(), isc::util::StateModel::defineEvents(), IO_COMPLETED_EVT, NO_MORE_SERVERS_EVT, SELECT_SERVER_EVT, SERVER_IO_ERROR_EVT, SERVER_SELECTED_EVT, UPDATE_FAILED_EVT, and UPDATE_OK_EVT.

Referenced by isc::d2::CheckExistsAddTransaction::defineEvents(), isc::d2::CheckExistsRemoveTransaction::defineEvents(), isc::d2::NameAddTransaction::defineEvents(), isc::d2::NameRemoveTransaction::defineEvents(), isc::d2::SimpleAddTransaction::defineEvents(), isc::d2::SimpleAddWithoutDHCIDTransaction::defineEvents(), isc::d2::SimpleRemoveTransaction::defineEvents(), and isc::d2::SimpleRemoveWithoutDHCIDTransaction::defineEvents().

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◆ defineStates()

void isc::d2::NameChangeTransaction::defineStates ( )

protectedvirtual

Adds states defined by NameChangeTransaction to the state set.

This method adds the states common to NCR transaction processing to the dictionary of states. It invokes the superclass's implementation first to maintain the hierarchical chain of state definition. Derivations of NameChangeTransaction must invoke its implementation in like fashion.

Exceptions

StateModelError if an state definition is invalid or a duplicate.

Reimplemented from isc::util::StateModel.

Reimplemented in isc::d2::CheckExistsAddTransaction, isc::d2::CheckExistsRemoveTransaction, isc::d2::NameAddTransaction, isc::d2::NameRemoveTransaction, isc::d2::SimpleAddTransaction, isc::d2::SimpleAddWithoutDHCIDTransaction, isc::d2::SimpleRemoveTransaction, and isc::d2::SimpleRemoveWithoutDHCIDTransaction.

Definition at line 258 of file nc_trans.cc.

References isc::util::StateModel::defineStates().

Referenced by isc::d2::CheckExistsAddTransaction::defineStates(), isc::d2::CheckExistsRemoveTransaction::defineStates(), isc::d2::NameAddTransaction::defineStates(), isc::d2::NameRemoveTransaction::defineStates(), isc::d2::SimpleAddTransaction::defineStates(), isc::d2::SimpleAddWithoutDHCIDTransaction::defineStates(), isc::d2::SimpleRemoveTransaction::defineStates(), and isc::d2::SimpleRemoveWithoutDHCIDTransaction::defineStates().

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◆ getAddressRRType()

const dns::RRType & isc::d2::NameChangeTransaction::getAddressRRType ( ) const

Returns the DHCP data type for the lease address.

Returns: constant reference to dns::RRType::A() if the lease address is IPv4 or dns::RRType::AAAA() if the lease address is IPv6.

Definition at line 574 of file nc_trans.cc.

References isc::dns::RRType::A(), and isc::dns::RRType::AAAA().

Referenced by isc::d2::CheckExistsAddTransaction::buildAddFwdAddressRequest(), isc::d2::NameAddTransaction::buildAddFwdAddressRequest(), isc::d2::CheckExistsRemoveTransaction::buildRemoveFwdAddressRequest(), isc::d2::NameRemoveTransaction::buildRemoveFwdAddressRequest(), isc::d2::SimpleRemoveTransaction::buildRemoveFwdRRsRequest(), isc::d2::SimpleRemoveWithoutDHCIDTransaction::buildRemoveFwdRRsRequest(), isc::d2::CheckExistsAddTransaction::buildReplaceFwdAddressRequest(), isc::d2::NameAddTransaction::buildReplaceFwdAddressRequest(), isc::d2::SimpleAddTransaction::buildReplaceFwdAddressRequest(), and isc::d2::SimpleAddWithoutDHCIDTransaction::buildReplaceFwdAddressRequest().

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◆ getCurrentServer()

const DnsServerInfoPtr & isc::d2::NameChangeTransaction::getCurrentServer ( ) const

Fetches the currently selected server.

Returns: A const pointer reference to the DnsServerInfo of the current server.

Definition at line 534 of file nc_trans.cc.

◆ getDNSClient()

const DNSClientPtr & isc::d2::NameChangeTransaction::getDNSClient ( ) const

Fetches the DNSClient instance.

Returns: A const pointer reference to the DNSClient

Definition at line 529 of file nc_trans.cc.

◆ getDnsUpdateRequest()

const D2UpdateMessagePtr & isc::d2::NameChangeTransaction::getDnsUpdateRequest ( ) const

Fetches the current DNS update request packet.

Returns: A const pointer reference to the current D2UpdateMessage request.

Definition at line 544 of file nc_trans.cc.

◆ getDnsUpdateResponse()

const D2UpdateMessagePtr & isc::d2::NameChangeTransaction::getDnsUpdateResponse ( ) const

Fetches the most recent DNS update response packet.

Returns: A const pointer reference to the D2UpdateMessage most recently received.

Definition at line 554 of file nc_trans.cc.

◆ getDnsUpdateStatus()

DNSClient::Status isc::d2::NameChangeTransaction::getDnsUpdateStatus ( ) const

Fetches the most recent DNS update status.

Returns: A DNSClient::Status indicating the result of the most recent DNS update to complete.

Definition at line 549 of file nc_trans.cc.

◆ getForwardChangeCompleted()

bool isc::d2::NameChangeTransaction::getForwardChangeCompleted ( ) const

Returns whether the forward change has completed or not.

The value returned is only meaningful if the NameChangeRequest calls for a forward change to be done. The value returned indicates if forward change has been completed successfully.

Returns: True if the forward change has been completed, false otherwise.

Definition at line 559 of file nc_trans.cc.

Referenced by transactionOutcomeString().

◆ getForwardDomain()

DdnsDomainPtr & isc::d2::NameChangeTransaction::getForwardDomain ( )

Fetches the forward DdnsDomain.

Returns: A pointer reference to the forward DdnsDomain. If the request does not include a forward change, the pointer will empty.

Definition at line 446 of file nc_trans.cc.

◆ getIOService()

const asiolink::IOServicePtr & isc::d2::NameChangeTransaction::getIOService ( )

inlineprotected

Fetches the IOService the transaction uses for IO processing.

Returns: returns a const pointer to the IOService.

Definition at line 364 of file nc_trans.h.

◆ getNcr()

const dhcp_ddns::NameChangeRequestPtr & isc::d2::NameChangeTransaction::getNcr ( ) const

Fetches the NameChangeRequest for this transaction.

Returns: A const pointer reference to the NameChangeRequest.

Definition at line 426 of file nc_trans.cc.

◆ getNcrStatus()

dhcp_ddns::NameChangeStatus isc::d2::NameChangeTransaction::getNcrStatus ( ) const

Fetches the NameChangeRequest status of the transaction.

This is the current status of the NameChangeRequest, not to be confused with the state of the transaction. Once the transaction is reached its conclusion, the request will end up with a final status.

Returns: A dhcp_ddns::NameChangeStatus representing the current status of the transaction.

Definition at line 441 of file nc_trans.cc.

Referenced by transactionOutcomeString().

◆ getRequestId()

std::string isc::d2::NameChangeTransaction::getRequestId ( ) const

Fetches the request id that identifies this transaction.

This is a wrapper around getRequestId from the NCR which currently returns DHCID. In the future we may include a distinct request id. The primary purpose of this function is to provide a consistent way to identify requests for logging purposes.

Returns: a string with the request's request ID (currently DHCID)

Definition at line 436 of file nc_trans.cc.

◆ getReverseChangeCompleted()

bool isc::d2::NameChangeTransaction::getReverseChangeCompleted ( ) const

Returns whether the reverse change has completed or not.

The value returned is only meaningful if the NameChangeRequest calls for a reverse change to be done. The value returned indicates if reverse change has been completed successfully.

Returns: True if the reverse change has been completed, false otherwise.

Definition at line 564 of file nc_trans.cc.

Referenced by transactionOutcomeString().

◆ getReverseDomain()

DdnsDomainPtr & isc::d2::NameChangeTransaction::getReverseDomain ( )

Fetches the reverse DdnsDomain.

Returns: A pointer reference to the reverse DdnsDomain. If the request does not include a reverse change, the pointer will empty.

Definition at line 451 of file nc_trans.cc.

◆ getTransactionKey()

const TransactionKey & isc::d2::NameChangeTransaction::getTransactionKey ( ) const

Fetches the unique key that identifies this transaction.

Transactions are uniquely identified by a TransactionKey. Currently this is wrapper around a D2Dhcid.

Returns: A const reference to the TransactionKey.

Definition at line 431 of file nc_trans.cc.

◆ getUpdateAttempts()

size_t isc::d2::NameChangeTransaction::getUpdateAttempts ( ) const

Fetches the update attempt count for the current update.

Returns: size_t which is the number of times the current request has been attempted against the current server.

Definition at line 569 of file nc_trans.cc.

◆ initServerSelection()

void isc::d2::NameChangeTransaction::initServerSelection ( const DdnsDomainPtr & domain )

protected

Initializes server selection from the given DDNS domain.

Method prepares internal data to conduct server selection from the list of servers supplied by the given domain. This method should be called when a transaction is ready to begin selecting servers from a new list. Typically this will be prior to starting the updates for a given DNS direction.

Parameters

domain is the domain from which server selection is to be conducted.

Definition at line 456 of file nc_trans.cc.

References isc_throw.

◆ onModelFailure()

void isc::d2::NameChangeTransaction::onModelFailure ( const std::string & explanation )

protectedvirtual

Handler for fatal model execution errors.

This handler is called by the StateModel implementation when the model execution encounters a model violation: attempt to call an unmapped state, an event not valid for the current state, or an uncaught exception thrown during a state handler invocation. When such an error occurs the transaction is deemed inoperable, and further model execution cannot be performed. It marks the transaction as failed by setting the NCR status to dhcp_ddns::ST_FAILED

Parameters

explanation is text detailing the error

Reimplemented from isc::util::StateModel.

Definition at line 279 of file nc_trans.cc.

References isc::d2::d2_to_dns_logger, isc::d2::DHCP_DDNS_STATE_MODEL_UNEXPECTED_ERROR, getRequestId(), LOG_ERROR, setNcrStatus(), and isc::dhcp_ddns::ST_FAILED.

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◆ operator()()

void isc::d2::NameChangeTransaction::operator() ( DNSClient::Status status )

virtual

Serves as the DNSClient IO completion event handler.

This is the implementation of the method inherited by our derivation from DNSClient::Callback. When the DNSClient completes an update it invokes this method as the completion handler. This method stores the given status and invokes runStateModel() with an event value of IO_COMPLETED_EVT.

Parameters

status is the outcome of the DNS update packet exchange. This method is exception safe.

Implements isc::d2::DNSClient::Callback.

Definition at line 121 of file nc_trans.cc.

References isc::d2::d2_to_dns_logger, isc::log::DBGLVL_TRACE_DETAIL, isc::d2::DHCP_DDNS_UPDATE_RESPONSE_RECEIVED, getRequestId(), IO_COMPLETED_EVT, LOG_DEBUG, responseString(), isc::util::StateModel::runModel(), and setDnsUpdateStatus().

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◆ prepNewRequest()

D2UpdateMessagePtr isc::d2::NameChangeTransaction::prepNewRequest ( DdnsDomainPtr domain )

protectedvirtual

Creates a new DNS update request based on the given domain.

Constructs a new "empty", OUTBOUND, request with the message id set and zone section populated based on the given domain. It is declared virtual for test purposes.

Returns: A D2UpdateMessagePtr to the new request.

Exceptions

NameChangeTransactionError if request cannot be constructed.

Definition at line 344 of file nc_trans.cc.

References isc::cryptolink::generateQid(), isc::dns::RRClass::IN(), isc_throw, and isc::Exception::what().

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◆ responseString()

std::string isc::d2::NameChangeTransaction::responseString ( ) const

protected

Returns a string version of the current response status and rcode.

Renders a string containing the text label of current DNS update status and RCODE (if status is DNSClient::SUCCESS)

Returns: std::string containing constructed text

Definition at line 137 of file nc_trans.cc.

References getDnsUpdateResponse(), getDnsUpdateStatus(), isc::d2::DNSClient::INVALID_RESPONSE, isc::d2::DNSClient::IO_STOPPED, isc::d2::DNSClient::OTHER, isc::d2::DNSClient::SUCCESS, and isc::d2::DNSClient::TIMEOUT.

Referenced by operator()().

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◆ retryTransition()

void isc::d2::NameChangeTransaction::retryTransition ( const int fail_to_state )

protected

Determines the state and next event based on update attempts.

This method will post a next event of SERVER_SELECTED_EVT to the current state if the number of update attempts has not reached the maximum allowed.

If the maximum number of attempts has been reached, it will transition to the given state with a next event of SERVER_IO_ERROR_EVT.

Parameters

fail_to_state State to transition to if maximum attempts have been tried.

Definition at line 287 of file nc_trans.cc.

References isc::util::StateModel::getCurrState(), MAX_UPDATE_TRIES_PER_SERVER, SERVER_IO_ERROR_EVT, SERVER_SELECTED_EVT, and isc::util::StateModel::transition().

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◆ selectNextServer()

bool isc::d2::NameChangeTransaction::selectNextServer ( )

protected

Selects the next server in the current server list.

This method is used to iterate over the list of servers. If there are no more servers in the list, it returns false. Otherwise it sets the current server to the next server and creates a new DNSClient instance.

Returns: True if a server has been selected, false if there are no more servers from which to select.

Definition at line 468 of file nc_trans.cc.

References selectTSIGKey(), and isc::d2::DNSClient::UDP.

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◆ selectTSIGKey()

bool isc::d2::NameChangeTransaction::selectTSIGKey ( )

protected

Selects the TSIG key.

This method uses the current server and the select_key callout. When no TSIG key is selected the tsig_key_ pointer is null.

Returns: False when the current server should be skipped.

Definition at line 497 of file nc_trans.cc.

References isc::hooks::HooksManager::callCallouts(), isc::hooks::HooksManager::calloutsPresent(), isc::hooks::HooksManager::createCalloutHandle(), Hooks, and isc::hooks::CalloutHandle::NEXT_STEP_CONTINUE.

Referenced by selectNextServer().

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◆ sendUpdate()

void isc::d2::NameChangeTransaction::sendUpdate ( const std::string & comment = "" )

protectedvirtual

Send the update request to the current server.

This method increments the update attempt count and then passes the current update request to the DNSClient instance to be sent to the currently selected server. Since the send is asynchronous, the method posts NOP_EVT as the next event and then returns.

If tsig_key_ is not NULL, then the update will be conducted using the key to sign the request and verify the response, otherwise it will be conducted without TSIG.

Parameters

comment text to include in log detail

If an exception occurs it will be logged and and the transaction will be failed.

Definition at line 193 of file nc_trans.cc.

References isc::d2::d2_to_dns_logger, isc::log::DBGLVL_TRACE_DETAIL, isc::d2::DHCP_DDNS_TRANS_SEND_ERROR, isc::d2::DHCP_DDNS_UPDATE_REQUEST_SENT, getRequestId(), LOG_DEBUG, LOG_ERROR, isc::util::StateModel::NOP_EVT, isc::util::StateModel::postNextEvent(), PROCESS_TRANS_FAILED_ST, isc::util::StateModel::transition(), and UPDATE_FAILED_EVT.

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◆ setDnsUpdateRequest()

void isc::d2::NameChangeTransaction::setDnsUpdateRequest ( D2UpdateMessagePtr & request )

protected

Sets the update request packet to the given packet.

Parameters

request is the new request packet to assign.

Definition at line 299 of file nc_trans.cc.

◆ setDnsUpdateResponse()

void isc::d2::NameChangeTransaction::setDnsUpdateResponse ( D2UpdateMessagePtr & response )

protected

Sets the update response packet to the given packet.

Parameters

response is the new response packet to assign.

Definition at line 319 of file nc_trans.cc.

◆ setDnsUpdateStatus()

void isc::d2::NameChangeTransaction::setDnsUpdateStatus ( const DNSClient::Status & status )

protected

Sets the update status to the given status value.

Parameters

status is the new value for the update status.

Definition at line 314 of file nc_trans.cc.

Referenced by operator()().

◆ setForwardChangeCompleted()

void isc::d2::NameChangeTransaction::setForwardChangeCompleted ( const bool value )

protected

Sets the forward change completion flag to the given value.

Parameters

value is the new value to assign to the flag.

Definition at line 329 of file nc_trans.cc.

Referenced by isc::d2::CheckExistsAddTransaction::addingFwdAddrsHandler(), isc::d2::NameAddTransaction::addingFwdAddrsHandler(), isc::d2::CheckExistsRemoveTransaction::removingFwdRRsHandler(), isc::d2::NameRemoveTransaction::removingFwdRRsHandler(), isc::d2::SimpleRemoveTransaction::removingFwdRRsHandler(), isc::d2::SimpleRemoveWithoutDHCIDTransaction::removingFwdRRsHandler(), isc::d2::CheckExistsAddTransaction::replacingFwdAddrsHandler(), isc::d2::NameAddTransaction::replacingFwdAddrsHandler(), isc::d2::SimpleAddTransaction::replacingFwdAddrsHandler(), and isc::d2::SimpleAddWithoutDHCIDTransaction::replacingFwdAddrsHandler().

◆ setNcrStatus()

void isc::d2::NameChangeTransaction::setNcrStatus ( const dhcp_ddns::NameChangeStatus & status )

protected

Sets the status of the transaction's NameChangeRequest.

Parameters

status is the new value to assign to the NCR status.

Definition at line 539 of file nc_trans.cc.

◆ setReverseChangeCompleted()

void isc::d2::NameChangeTransaction::setReverseChangeCompleted ( const bool value )

protected

Sets the reverse change completion flag to the given value.

Parameters

value is the new value to assign to the flag.

Definition at line 334 of file nc_trans.cc.

Referenced by isc::d2::CheckExistsRemoveTransaction::removingRevPtrsHandler(), isc::d2::NameRemoveTransaction::removingRevPtrsHandler(), isc::d2::SimpleRemoveTransaction::removingRevPtrsHandler(), isc::d2::SimpleRemoveWithoutDHCIDTransaction::removingRevPtrsHandler(), isc::d2::CheckExistsAddTransaction::replacingRevPtrsHandler(), isc::d2::NameAddTransaction::replacingRevPtrsHandler(), isc::d2::SimpleAddTransaction::replacingRevPtrsHandler(), and isc::d2::SimpleAddWithoutDHCIDTransaction::replacingRevPtrsHandler().

◆ setUpdateAttempts()

void isc::d2::NameChangeTransaction::setUpdateAttempts ( const size_t value )

protected

Sets the update attempt count to the given value.

Parameters

value is the new value to assign.

Definition at line 339 of file nc_trans.cc.

◆ startTransaction()

void isc::d2::NameChangeTransaction::startTransaction ( )

Begins execution of the transaction.

This method invokes StateModel::startModel() with a value of READY_ST. This causes transaction's state model to attempt to begin execution with the state handler for READY_ST.

Definition at line 111 of file nc_trans.cc.

References isc::d2::d2_to_dns_logger, isc::log::DBGLVL_TRACE_DETAIL, isc::d2::DHCP_DDNS_STARTING_TRANSACTION, getRequestId(), LOG_DEBUG, READY_ST, setNcrStatus(), isc::dhcp_ddns::ST_PENDING, and isc::util::StateModel::startModel().

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◆ transactionOutcomeString()

std::string isc::d2::NameChangeTransaction::transactionOutcomeString ( ) const

protected

Returns a string version of transaction outcome.

Renders a string containing summarizes the outcome of the transaction. The information includes the overall status, the last event, whether not forward and reverse changes were done, as well as the NCR serviced.

Returns: std::string containing constructed text

Definition at line 171 of file nc_trans.cc.

References isc::util::StateModel::getEventLabel(), getForwardChangeCompleted(), getNcrStatus(), isc::util::StateModel::getNextEvent(), getReverseChangeCompleted(), and isc::dhcp_ddns::ST_COMPLETED.

Referenced by isc::d2::CheckExistsAddTransaction::processAddFailedHandler(), isc::d2::NameAddTransaction::processAddFailedHandler(), isc::d2::SimpleAddTransaction::processAddFailedHandler(), isc::d2::SimpleAddWithoutDHCIDTransaction::processAddFailedHandler(), isc::d2::CheckExistsRemoveTransaction::processRemoveFailedHandler(), isc::d2::NameRemoveTransaction::processRemoveFailedHandler(), isc::d2::SimpleRemoveTransaction::processRemoveFailedHandler(), and isc::d2::SimpleRemoveWithoutDHCIDTransaction::processRemoveFailedHandler().

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◆ verifyEvents()

void isc::d2::NameChangeTransaction::verifyEvents ( )

protectedvirtual

Validates the contents of the set of events.

This method verifies that the events defined by both the superclass and this class are defined. As with defineEvents, this method calls the superclass's implementation first, to verify events defined by it and then this implementation to verify events defined by NameChangeTransaction.

Exceptions

StateModelError if an event value is undefined.

Reimplemented from isc::util::StateModel.

Reimplemented in isc::d2::CheckExistsAddTransaction, isc::d2::CheckExistsRemoveTransaction, isc::d2::NameAddTransaction, isc::d2::NameRemoveTransaction, isc::d2::SimpleAddTransaction, isc::d2::SimpleAddWithoutDHCIDTransaction, isc::d2::SimpleRemoveTransaction, and isc::d2::SimpleRemoveWithoutDHCIDTransaction.

Definition at line 243 of file nc_trans.cc.

References isc::util::StateModel::getEvent(), IO_COMPLETED_EVT, NO_MORE_SERVERS_EVT, SELECT_SERVER_EVT, SERVER_IO_ERROR_EVT, SERVER_SELECTED_EVT, UPDATE_FAILED_EVT, UPDATE_OK_EVT, and isc::util::StateModel::verifyEvents().

Referenced by isc::d2::CheckExistsAddTransaction::verifyEvents(), isc::d2::CheckExistsRemoveTransaction::verifyEvents(), isc::d2::NameAddTransaction::verifyEvents(), isc::d2::NameRemoveTransaction::verifyEvents(), isc::d2::SimpleAddTransaction::verifyEvents(), isc::d2::SimpleAddWithoutDHCIDTransaction::verifyEvents(), isc::d2::SimpleRemoveTransaction::verifyEvents(), and isc::d2::SimpleRemoveWithoutDHCIDTransaction::verifyEvents().

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◆ verifyStates()

void isc::d2::NameChangeTransaction::verifyStates ( )

protectedvirtual

Validates the contents of the set of states.

This method verifies that the states defined by both the superclass and this class are defined. As with defineStates, this method calls the superclass's implementation first, to verify states defined by it and then this implementation to verify states defined by NameChangeTransaction.

Exceptions

StateModelError if an event value is undefined.

Reimplemented from isc::util::StateModel.

Reimplemented in isc::d2::CheckExistsAddTransaction, isc::d2::CheckExistsRemoveTransaction, isc::d2::NameAddTransaction, isc::d2::NameRemoveTransaction, isc::d2::SimpleAddTransaction, isc::d2::SimpleAddWithoutDHCIDTransaction, isc::d2::SimpleRemoveTransaction, and isc::d2::SimpleRemoveWithoutDHCIDTransaction.

Definition at line 266 of file nc_trans.cc.

References isc::util::StateModel::getStateInternal(), PROCESS_TRANS_FAILED_ST, PROCESS_TRANS_OK_ST, READY_ST, SELECTING_FWD_SERVER_ST, SELECTING_REV_SERVER_ST, and isc::util::StateModel::verifyStates().

Referenced by isc::d2::CheckExistsAddTransaction::verifyStates(), isc::d2::CheckExistsRemoveTransaction::verifyStates(), isc::d2::NameAddTransaction::verifyStates(), isc::d2::NameRemoveTransaction::verifyStates(), isc::d2::SimpleAddTransaction::verifyStates(), isc::d2::SimpleAddWithoutDHCIDTransaction::verifyStates(), isc::d2::SimpleRemoveTransaction::verifyStates(), and isc::d2::SimpleRemoveWithoutDHCIDTransaction::verifyStates().

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Member Data Documentation

◆ DNS_UPDATE_DEFAULT_TIMEOUT

const unsigned int isc::d2::NameChangeTransaction::DNS_UPDATE_DEFAULT_TIMEOUT = 100

static

Default time to assign to a single DNS update.

Todo: This value will be made configurable in the very near future under trac3268. For now we will define it to 100 milliseconds so unit tests will run within a reasonable amount of time.

Definition at line 151 of file nc_trans.h.

◆ IO_COMPLETED_EVT

const int isc::d2::NameChangeTransaction::IO_COMPLETED_EVT = SM_DERIVED_EVENT_MIN + 5

static

Issued when a DNS update packet exchange has completed.

This occurs whenever the DNSClient callback is invoked whether the exchange was successful or not.

Definition at line 130 of file nc_trans.h.

Referenced by isc::d2::CheckExistsAddTransaction::addingFwdAddrsHandler(), isc::d2::NameAddTransaction::addingFwdAddrsHandler(), defineEvents(), operator()(), isc::d2::CheckExistsRemoveTransaction::removingFwdAddrsHandler(), isc::d2::NameRemoveTransaction::removingFwdAddrsHandler(), isc::d2::CheckExistsRemoveTransaction::removingFwdRRsHandler(), isc::d2::NameRemoveTransaction::removingFwdRRsHandler(), isc::d2::SimpleRemoveTransaction::removingFwdRRsHandler(), isc::d2::SimpleRemoveWithoutDHCIDTransaction::removingFwdRRsHandler(), isc::d2::CheckExistsRemoveTransaction::removingRevPtrsHandler(), isc::d2::NameRemoveTransaction::removingRevPtrsHandler(), isc::d2::SimpleRemoveTransaction::removingRevPtrsHandler(), isc::d2::SimpleRemoveWithoutDHCIDTransaction::removingRevPtrsHandler(), isc::d2::CheckExistsAddTransaction::replacingFwdAddrsHandler(), isc::d2::NameAddTransaction::replacingFwdAddrsHandler(), isc::d2::SimpleAddTransaction::replacingFwdAddrsHandler(), isc::d2::SimpleAddWithoutDHCIDTransaction::replacingFwdAddrsHandler(), isc::d2::CheckExistsAddTransaction::replacingRevPtrsHandler(), isc::d2::NameAddTransaction::replacingRevPtrsHandler(), isc::d2::SimpleAddTransaction::replacingRevPtrsHandler(), isc::d2::SimpleAddWithoutDHCIDTransaction::replacingRevPtrsHandler(), and verifyEvents().

◆ MAX_UPDATE_TRIES_PER_SERVER

const unsigned int isc::d2::NameChangeTransaction::MAX_UPDATE_TRIES_PER_SERVER = 3

static

Maximum times to attempt a single update on a given server.

Definition at line 154 of file nc_trans.h.

Referenced by retryTransition().

◆ NCT_DERIVED_EVENT_MIN

const int isc::d2::NameChangeTransaction::NCT_DERIVED_EVENT_MIN = SM_DERIVED_EVENT_MIN + 101

static

Value at which custom events in a derived class should begin.

Definition at line 144 of file nc_trans.h.

◆ NCT_DERIVED_STATE_MIN

const int isc::d2::NameChangeTransaction::NCT_DERIVED_STATE_MIN = SM_DERIVED_STATE_MIN + 101

static

Value at which custom states in a derived class should begin.

Definition at line 108 of file nc_trans.h.

◆ NO_MORE_SERVERS_EVT

const int isc::d2::NameChangeTransaction::NO_MORE_SERVERS_EVT =SM_DERIVED_EVENT_MIN + 4

static

Issued when there are no more servers from which to select.

This occurs when none of the servers in the list can be reached to perform the update.

Definition at line 125 of file nc_trans.h.

◆ PROCESS_TRANS_FAILED_ST

const int isc::d2::NameChangeTransaction::PROCESS_TRANS_FAILED_ST = SM_DERIVED_STATE_MIN + 5

static

State which processes an unsuccessful transaction conclusion.

Definition at line 105 of file nc_trans.h.

◆ PROCESS_TRANS_OK_ST

const int isc::d2::NameChangeTransaction::PROCESS_TRANS_OK_ST = SM_DERIVED_STATE_MIN + 4

static

State which processes successful transaction conclusion.

Definition at line 102 of file nc_trans.h.

◆ READY_ST

const int isc::d2::NameChangeTransaction::READY_ST = SM_DERIVED_STATE_MIN + 1

static

State from which a transaction is started.

Definition at line 83 of file nc_trans.h.

Referenced by isc::d2::CheckExistsAddTransaction::defineStates(), isc::d2::CheckExistsRemoveTransaction::defineStates(), isc::d2::NameAddTransaction::defineStates(), isc::d2::NameRemoveTransaction::defineStates(), isc::d2::SimpleAddTransaction::defineStates(), isc::d2::SimpleAddWithoutDHCIDTransaction::defineStates(), isc::d2::SimpleRemoveTransaction::defineStates(), isc::d2::SimpleRemoveWithoutDHCIDTransaction::defineStates(), startTransaction(), and verifyStates().

◆ SELECT_SERVER_EVT

const int isc::d2::NameChangeTransaction::SELECT_SERVER_EVT = SM_DERIVED_EVENT_MIN + 1

static

Issued when a server needs to be selected.

Definition at line 113 of file nc_trans.h.

◆ SELECTING_FWD_SERVER_ST

const int isc::d2::NameChangeTransaction::SELECTING_FWD_SERVER_ST = SM_DERIVED_STATE_MIN + 2

static

State in which forward DNS server selection is done.

Within this state, the actual selection of the next forward server to use is conducted. Upon conclusion of this state the next server is either selected or it should transition out with NO_MORE_SERVERS_EVT event.

Definition at line 91 of file nc_trans.h.

◆ SELECTING_REV_SERVER_ST

const int isc::d2::NameChangeTransaction::SELECTING_REV_SERVER_ST = SM_DERIVED_STATE_MIN + 3

static

State in which reverse DNS server selection is done.

Within this state, the actual selection of the next reverse server to use is conducted. Upon conclusion of this state the next server is either selected or it should transition out with NO_MORE_SERVERS_EVT event.

Definition at line 99 of file nc_trans.h.

◆ SERVER_IO_ERROR_EVT

const int isc::d2::NameChangeTransaction::SERVER_IO_ERROR_EVT = SM_DERIVED_EVENT_MIN + 3

static

Issued when an update fails due to an IO error.

Definition at line 119 of file nc_trans.h.

◆ SERVER_SELECTED_EVT

const int isc::d2::NameChangeTransaction::SERVER_SELECTED_EVT = SM_DERIVED_EVENT_MIN + 2

static

Issued when a server has been selected.

Definition at line 116 of file nc_trans.h.

◆ UPDATE_FAILED_EVT

const int isc::d2::NameChangeTransaction::UPDATE_FAILED_EVT = SM_DERIVED_EVENT_MIN + 7

static

Issued when the attempted update fails to complete.

This occurs when an DNS update packet fails to process. The nature of the failure is given by the DNSClient return status and the response packet (if one was received).

Definition at line 141 of file nc_trans.h.

◆ UPDATE_OK_EVT

const int isc::d2::NameChangeTransaction::UPDATE_OK_EVT = SM_DERIVED_EVENT_MIN + 6

static

Issued when the attempted update successfully completed.

This occurs when an DNS update packet was successfully processed by the server.

Definition at line 135 of file nc_trans.h.

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

Public Member Functions

Static Public Attributes

Protected Member Functions

Detailed Description

Constructor & Destructor Documentation

◆ NameChangeTransaction()

◆ ~NameChangeTransaction()

Member Function Documentation

◆ addDhcidRdata()

◆ addLeaseAddressRdata()

◆ addPtrRdata()

◆ clearDnsUpdateRequest()

◆ clearDnsUpdateResponse()

◆ clearUpdateAttempts()

◆ defineEvents()

◆ defineStates()

◆ getAddressRRType()

◆ getCurrentServer()

◆ getDNSClient()

◆ getDnsUpdateRequest()

◆ getDnsUpdateResponse()

◆ getDnsUpdateStatus()

◆ getForwardChangeCompleted()

◆ getForwardDomain()

◆ getIOService()

◆ getNcr()

◆ getNcrStatus()

◆ getRequestId()

◆ getReverseChangeCompleted()

◆ getReverseDomain()

◆ getTransactionKey()

◆ getUpdateAttempts()

◆ initServerSelection()

◆ onModelFailure()

◆ operator()()

◆ prepNewRequest()

◆ responseString()

◆ retryTransition()

◆ selectNextServer()

◆ selectTSIGKey()

◆ sendUpdate()

◆ setDnsUpdateRequest()

◆ setDnsUpdateResponse()

◆ setDnsUpdateStatus()

◆ setForwardChangeCompleted()

◆ setNcrStatus()

◆ setReverseChangeCompleted()

◆ setUpdateAttempts()

◆ startTransaction()

◆ transactionOutcomeString()

◆ verifyEvents()

◆ verifyStates()

Member Data Documentation

◆ DNS_UPDATE_DEFAULT_TIMEOUT

◆ IO_COMPLETED_EVT

◆ MAX_UPDATE_TRIES_PER_SERVER

◆ NCT_DERIVED_EVENT_MIN

◆ NCT_DERIVED_STATE_MIN

◆ NO_MORE_SERVERS_EVT

◆ PROCESS_TRANS_FAILED_ST

◆ PROCESS_TRANS_OK_ST

◆ READY_ST

◆ SELECT_SERVER_EVT

◆ SELECTING_FWD_SERVER_ST

◆ SELECTING_REV_SERVER_ST

◆ SERVER_IO_ERROR_EVT

◆ SERVER_SELECTED_EVT

◆ UPDATE_FAILED_EVT

◆ UPDATE_OK_EVT