Supports exchanging IPv6 leases with PostgreSQL. More...

Inheritance diagram for isc::dhcp::PgSqlLease6Exchange:

Classes
union	Uiaid
	Union for marshalling IAID into and out of the database IAID is defined in the RFC as 4 octets, which Kea code handles as a uint32_t. More...

Public Member Functions
	PgSqlLease6Exchange ()

Lease6Ptr	convertFromDatabase (const PgSqlResult &r, int row)
	Creates a Lease6 object from a given row in a result set. More...

void	createBindForSend (const Lease6Ptr &lease, PsqlBindArray &bind_array)
	Creates the bind array for sending Lease6 data to the database. More...

void	getLeaseTypeColumnValue (const PgSqlResult &r, const int row, const size_t col, Lease6::Type &value) const
	Fetches an integer text column as a Lease6::Type. More...

Public Member Functions inherited from isc::dhcp::PgSqlLeaseExchange
	PgSqlLeaseExchange ()

virtual	~PgSqlLeaseExchange ()

Public Member Functions inherited from isc::db::PgSqlExchange
	PgSqlExchange (const size_t num_columns=0)
	Constructor. More...

virtual	~PgSqlExchange ()
	Destructor. More...

Additional Inherited Members
Static Public Member Functions inherited from isc::db::PgSqlExchange
static void	convertFromBytea (const PgSqlResult &r, const int row, const size_t col, uint8_t *buffer, const size_t buffer_size, size_t &bytes_converted)
	Converts a column in a row in a result set to a binary bytes. More...

static time_t	convertFromDatabaseTime (const std::string &db_time_val)
	Converts time stamp from the database to a time_t. More...

static std::string	convertToDatabaseTime (const time_t input_time)
	Converts time_t value to a text representation in local time. More...

static std::string	convertToDatabaseTime (const time_t cltt, const uint32_t valid_lifetime)
	Converts lease expiration time to a text representation in local time. More...

static std::string	dumpRow (const PgSqlResult &r, int row)
	Diagnostic tool which dumps the Result row contents as a string. More...

static std::string	getColumnLabel (const PgSqlResult &r, const size_t col)
	Fetches the name of the column in a result set. More...

static void	getColumnValue (const PgSqlResult &r, const int row, const size_t col, std::string &value)
	Fetches text column value as a string. More...

static void	getColumnValue (const PgSqlResult &r, const int row, const size_t col, bool &value)
	Fetches boolean text ('t' or 'f') as a bool. More...

static void	getColumnValue (const PgSqlResult &r, const int row, const size_t col, uint8_t &value)
	Fetches an integer text column as a uint8_t. More...

template<typename T >
static void	getColumnValue (const PgSqlResult &r, const int row, const size_t col, T &value)
	Fetches a text column as the given value type. More...

static isc::asiolink::IOAddress	getIPv6Value (const PgSqlResult &r, const int row, const size_t col)
	Converts a column in a row in a result set into IPv6 address. More...

static const char *	getRawColumnValue (const PgSqlResult &r, const int row, const size_t col)
	Gets a pointer to the raw column value in a result set row. More...

static bool	isColumnNull (const PgSqlResult &r, const int row, const size_t col)
	Returns true if a column within a row is null. More...

Protected Attributes inherited from isc::dhcp::PgSqlLeaseExchange
std::string	addr_str_
	Common Instance members used for binding and conversion. More...

size_t	hwaddr_length_

std::vector< uint8_t >	hwaddr_

uint8_t	hwaddr_buffer_ [HWAddr::MAX_HWADDR_LEN]

uint32_t	valid_lifetime_

std::string	valid_lifetime_str_

time_t	expire_

std::string	expire_str_

uint32_t	subnet_id_

std::string	subnet_id_str_

time_t	cltt_

bool	fqdn_fwd_

bool	fqdn_rev_

std::string	hostname_

std::string	state_str_

std::string	user_context_

Protected Attributes inherited from isc::db::PgSqlExchange
std::vector< std::string >	columns_
	Stores text labels for columns, currently only used for logging and errors. More...

Detailed Description

Supports exchanging IPv6 leases with PostgreSQL.

Definition at line 629 of file pgsql_lease_mgr.cc.

Constructor & Destructor Documentation

isc::dhcp::PgSqlLease6Exchange::PgSqlLease6Exchange ( )

inline

Definition at line 684 of file pgsql_lease_mgr.cc.

Member Function Documentation

Lease6Ptr isc::dhcp::PgSqlLease6Exchange::convertFromDatabase	(	const PgSqlResult &	r,
		int	row
	)

inline

Creates a Lease6 object from a given row in a result set.

Parameters

r	result set containing one or rows from the Lease6 table
row	row number within the result set from to create the Lease6 object.

Returns: Lease6Ptr to the newly created Lease4 object

Exceptions

DbOperationError if the lease cannot be created.

Todo:: In theory, an administrator could tweak lease information in the database. In this case, some of the values could be set to NULL. This is less likely than in case of host reservations, but we may consider if retrieved values should be checked for being NULL to prevent cryptic errors during conversions from NULL to actual values.

Definition at line 837 of file pgsql_lease_mgr.cc.

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

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void isc::dhcp::PgSqlLease6Exchange::createBindForSend	(	const Lease6Ptr &	lease,
		PsqlBindArray &	bind_array
	)

inline

Creates the bind array for sending Lease6 data to the database.

Converts each Lease6 member into the appropriate form and adds it to the bind array. Note that the array additions must occur in the order the columns are specified in the SQL statement. By convention all columns in the table are explicitly listed in the SQL statement(s) in the same order as they occur in the table.

Parameters

	lease	Lease6 object that is to be written to the database
[out]	bind_array	array to populate with the lease data values

Exceptions

DbOperationError if bind_array cannot be populated.

Definition at line 727 of file pgsql_lease_mgr.cc.

References isc::db::PsqlBindArray::add(), isc::dhcp::HTYPE_UNDEFINED, isc_throw, and isc::Exception::what().

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void isc::dhcp::PgSqlLease6Exchange::getLeaseTypeColumnValue	(	const PgSqlResult &	r,
		const int	row,
		const size_t	col,
		Lease6::Type &	value
	)		const

inline

Fetches an integer text column as a Lease6::Type.

Parameters

	r	the result set containing the query results
	row	the row number within the result set
	col	the column number within the row
[out]	value	parameter to receive the converted value

Note we depart from overloading getColumnValue to avoid ambiguity with base class methods for integers.

Exceptions

DbOperationError if the value cannot be fetched or is invalid.

Definition at line 948 of file pgsql_lease_mgr.cc.

References isc_throw.

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

pgsql_lease_mgr.cc

Classes

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation