ozo::failover::role_based_connection_provider< Source > Class Template Reference

#include <ozo/failover/role_based.h>

Description

template<typename Source>
class ozo::failover::role_based_connection_provider< Source >

ConnectionProvider implementation for the role-based failover strategy.

This is the role-based implementation of the ConnectionProvider concept. It binds io_context and role to the ConnectionSource implementation object. It requires from the underlying ConnectionSource an ability to be bound to a certain role via bind_role(role) method.

Template Parameters

Source

— ConnectionSource implementation

Models

ConnectionProvider

Types
using	source_type = std::decay_t< Source >
using	connection_type = typename connection_source_traits< source_type >::connection_type

Public Member Functions
template<typename T >
	role_based_connection_provider (T &&source, io_context &io)
template<typename OtherRole >
constexpr decltype(auto)	rebind_role (OtherRole r) const &
	Rebind the ConnectionProvider to an other role. More...
template<typename OtherRole >
constexpr decltype(auto)	rebind_role (OtherRole r) &
	Rebind the ConnectionProvider to an other role. More...
template<typename OtherRole >
constexpr decltype(auto)	rebind_role (OtherRole r) &&
	Rebind the ConnectionProvider to an other role. More...

Static Public Member Functions
template<typename OtherRole >
static constexpr auto	is_supported (const OtherRole &)

Types

connection_type

template<typename Source >

using ozo::failover::role_based_connection_provider< Source >::connection_type = typename connection_source_traits<source_type>::connection_type

Connection implementation type according to ConnectionProvider requirements. Specifies the Connection implementation type which can be obtained from this provider.

Note

Connection type depends on role type via source_type and maybe different for a different role.

source_type

template<typename Source >

using ozo::failover::role_based_connection_provider< Source >::source_type = std::decay_t<Source>

Current source type.

Note

Source type depends on role type and maybe different for a different role.

Constructors

role_based_connection_provider()

template<typename Source >

template<typename T >

ozo::failover::role_based_connection_provider< Source >::role_based_connection_provider	(	T &&	source,
		io_context &	io
	)

Construct a new role_based_connection_provider object

Parameters

source	— ConnectionSource implementation
io	— io_context for asynchronous IO

Member Function Documentation

is_supported()

template<typename Source >

template<typename OtherRole >

static constexpr auto ozo::failover::role_based_connection_provider< Source >::is_supported ( const OtherRole &  )

staticconstexpr

Indicates if a given role is supported by the source. The role is supported if source.rebind_role(role) can be invoked successful.

Parameters

OtherRole

— role to examine.

Referenced by ozo::failover::role_based_connection_provider< Source >::rebind_role().

rebind_role() [1/3]

template<typename Source >

template<typename OtherRole >

constexpr decltype(auto) ozo::failover::role_based_connection_provider< Source >::rebind_role ( OtherRole  r ) &

constexpr

Rebind the ConnectionProvider to an other role.

Parameters

r	— other role to rebind to

Returns

new ConnectionProvider object

References ozo::failover::role_based_connection_provider< Source >::is_supported(), and ozo::unwrap().

rebind_role() [2/3]

template<typename Source >

template<typename OtherRole >

constexpr decltype(auto) ozo::failover::role_based_connection_provider< Source >::rebind_role ( OtherRole  r ) &&

constexpr

Rebind the ConnectionProvider to an other role.

Parameters

r	— other role to rebind to

Returns

new ConnectionProvider object

References ozo::failover::role_based_connection_provider< Source >::is_supported(), ozo::failover::role_based_connection_provider< Source >::rebind_role(), and ozo::unwrap().

rebind_role() [3/3]

template<typename Source >

template<typename OtherRole >

constexpr decltype(auto) ozo::failover::role_based_connection_provider< Source >::rebind_role ( OtherRole  r ) const &

constexpr

Rebind the ConnectionProvider to an other role.

Parameters

r	— other role to rebind to

Returns

new ConnectionProvider object

References ozo::failover::role_based_connection_provider< Source >::is_supported(), and ozo::unwrap().

Referenced by ozo::failover::role_based_connection_provider< Source >::rebind_role().