Retry

Description

Failover by simple retry operation.

Classes
struct	ozo::failover::retry_options
	Options for retry. More...
class	ozo::failover::basic_try< Options, Context >
	Operation try representation. More...
class	ozo::failover::retry_strategy< Options >
	Retry strategy. More...

Functions
template<typename ... ErrorConditions>
constexpr auto	ozo::failover::retry (ErrorConditions ...ec)

Function Documentation

retry()

template<typename ... ErrorConditions>

constexpr auto ozo::failover::retry ( ErrorConditions ...  ec )

constexpr

Retry on specified error conditions.

Parameters

ec	— variadic of error conditions to retry

Returns

ozo::failover::retry_strategy specialization.

Example

Retry on a network problem and operation timed-out no more than 3 tries. Each try has own time constraint calculated from total operation time constraint. See ozo::failover::retry_strategy::tries() for time constraint details.

auto retry = failover::retry(errc::connection_error, errc::timeout)*3;
ozo::request[retry](pool, query, .5s, out, yield);

See also

ozo::failover::retry_strategy

References ozo::failover::retry_options::conditions, and ozo::options_factory_base< RealType, Options >::set().