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[#642,!373] Explained how globals are fetched for various selectors.

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Marcin Siodelski
2019-06-17 15:10:52 +02:00
parent 4503644458
commit 0a648a9efb
4 changed files with 122 additions and 0 deletions
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31
src/hooks/dhcp/mysql_cb/mysql_cb_dhcp4.h
View File

@@ -162,6 +162,10 @@ public:
/// @brief Retrieves global parameter value.
///
/// Typically, the server selector used for this query should be set to
/// ONE. It is possible to use the MULTIPLE server selector but in that
/// case only the first found parameter is returned.
///
/// @param server_selector Server selector.
/// @param name Name of the global parameter to be retrieved.
/// @return Value of the global parameter.
@@ -172,6 +176,33 @@ public:
/// @brief Retrieves all global parameters.
///
/// Using the server selector it is possible to fetch the parameters for
/// one or more servers. The following list describes what parameters are
/// returned depending on the server selector specified:
/// - ALL: only common parameters are returned which are associated with
/// the logical server 'all'. No parameters associated with the explicit
/// server tags are returned.
///
/// - ONE: parameters used by the particular sever are returned. This includes
/// parameters associated with the particular server (identified by tag)
/// and parameters associated with the logical server 'all' when server
/// specific parameters are not given. For example, if there is a
/// renew-timer specified for 'server1' tag, different value of the
/// renew-timer specified for 'all' servers and a rebind-timer specified
/// for 'all' servers, the caller will receive renew-timer value associated
/// with the server1 and the rebind-timer value associated with all servers,
/// because there is no explicit rebind-timer specified for server1.
///
/// - MULTIPLE: parameters used by multiple servers, but those associated
/// with specific server tags take precedence over the values specified for
/// 'all' servers. This is similar to the case of ONE server described
/// above. The effect of querying for parameters belonging to multiple
/// servers is the same as issuing multiple queries with ONE server
/// being selected multiple times.
///
/// - UNASSIGNED: parameters not associated with any servers.
///
///
/// @param server_selector Server selector.
virtual data::StampedValueCollection
getAllGlobalParameters4(const db::ServerSelector& server_selector) const;

31
src/hooks/dhcp/mysql_cb/mysql_cb_dhcp6.h
View File

@@ -162,6 +162,10 @@ public:
/// @brief Retrieves global parameter value.
///
/// Typically, the server selector used for this query should be set to
/// ONE. It is possible to use the MULTIPLE server selector but in that
/// case only the first found parameter is returned.
///
/// @param server_selector Server selector.
/// @param name Name of the global parameter to be retrieved.
/// @return Value of the global parameter.
@@ -172,6 +176,33 @@ public:
/// @brief Retrieves all global parameters.
///
/// Using the server selector it is possible to fetch the parameters for
/// one or more servers. The following list describes what parameters are
/// returned depending on the server selector specified:
/// - ALL: only common parameters are returned which are associated with
/// the logical server 'all'. No parameters associated with the explicit
/// server tags are returned.
///
/// - ONE: parameters used by the particular sever are returned. This includes
/// parameters associated with the particular server (identified by tag)
/// and parameters associated with the logical server 'all' when server
/// specific parameters are not given. For example, if there is a
/// renew-timer specified for 'server1' tag, different value of the
/// renew-timer specified for 'all' servers and a rebind-timer specified
/// for 'all' servers, the caller will receive renew-timer value associated
/// with the server1 and the rebind-timer value associated with all servers,
/// because there is no explicit rebind-timer specified for server1.
///
/// - MULTIPLE: parameters used by multiple servers, but those associated
/// with specific server tags take precedence over the values specified for
/// 'all' servers. This is similar to the case of ONE server described
/// above. The effect of querying for parameters belonging to multiple
/// servers is the same as issuing multiple queries with ONE server
/// being selected multiple times.
///
/// - UNASSIGNED: parameters not associated with any servers.
///
///
/// @param server_selector Server selector.
virtual data::StampedValueCollection
getAllGlobalParameters6(const db::ServerSelector& server_selector) const;

30
src/lib/dhcpsrv/config_backend_dhcp4.h
View File

@@ -165,6 +165,10 @@ public:
/// @brief Retrieves global parameter value.
///
/// Typically, the server selector used for this query should be set to
/// ONE. It is possible to use the MULTIPLE server selector but in that
/// case only the first found parameter is returned.
///
/// @param selector Server selector.
/// @param name Name of the global parameter to be retrieved.
/// @return Value of the global parameter or null if parameter doesn't
@@ -175,6 +179,32 @@ public:
/// @brief Retrieves all global parameters.
///
/// Using the server selector it is possible to fetch the parameters for
/// one or more servers. The following list describes what parameters are
/// returned depending on the server selector specified:
/// - ALL: only common parameters are returned which are associated with
/// the logical server 'all'. No parameters associated with the explicit
/// server tags are returned.
///
/// - ONE: parameters used by the particular sever are returned. This includes
/// parameters associated with the particular server (identified by tag)
/// and parameters associated with the logical server 'all' when server
/// specific parameters are not given. For example, if there is a
/// renew-timer specified for 'server1' tag, different value of the
/// renew-timer specified for 'all' servers and a rebind-timer specified
/// for 'all' servers, the caller will receive renew-timer value associated
/// with the server1 and the rebind-timer value associated with all servers,
/// because there is no explicit rebind-timer specified for server1.
///
/// - MULTIPLE: parameters used by multiple servers, but those associated
/// with specific server tags take precedence over the values specified for
/// 'all' servers. This is similar to the case of ONE server described
/// above. The effect of querying for parameters belonging to multiple
/// servers is the same as issuing multiple queries with ONE server
/// being selected multiple times.
///
/// - UNASSIGNED: parameters not associated with any servers.
///
/// @param selector Server selector.
/// @return Collection of global parameters.
virtual data::StampedValueCollection

30
src/lib/dhcpsrv/config_backend_dhcp6.h
View File

@@ -166,6 +166,10 @@ public:
/// @brief Retrieves global parameter value.
///
/// Typically, the server selector used for this query should be set to
/// ONE. It is possible to use the MULTIPLE server selector but in that
/// case only the first found parameter is returned.
///
/// @param selector Server selector.
/// @param name Name of the global parameter to be retrieved.
/// @return Value of the global parameter or null if parameter doesn't
@@ -176,6 +180,32 @@ public:
/// @brief Retrieves all global parameters.
///
/// Using the server selector it is possible to fetch the parameters for
/// one or more servers. The following list describes what parameters are
/// returned depending on the server selector specified:
/// - ALL: only common parameters are returned which are associated with
/// the logical server 'all'. No parameters associated with the explicit
/// server tags are returned.
///
/// - ONE: parameters used by the particular sever are returned. This includes
/// parameters associated with the particular server (identified by tag)
/// and parameters associated with the logical server 'all' when server
/// specific parameters are not given. For example, if there is a
/// renew-timer specified for 'server1' tag, different value of the
/// renew-timer specified for 'all' servers and a rebind-timer specified
/// for 'all' servers, the caller will receive renew-timer value associated
/// with the server1 and the rebind-timer value associated with all servers,
/// because there is no explicit rebind-timer specified for server1.
///
/// - MULTIPLE: parameters used by multiple servers, but those associated
/// with specific server tags take precedence over the values specified for
/// 'all' servers. This is similar to the case of ONE server described
/// above. The effect of querying for parameters belonging to multiple
/// servers is the same as issuing multiple queries with ONE server
/// being selected multiple times.
///
/// - UNASSIGNED: parameters not associated with any servers.
///
/// @param selector Server selector.
/// @return Collection of global parameters.
virtual data::StampedValueCollection