DatabaseConnection Class Reference

Collaboration diagram for DatabaseConnection:

Public Member Functions
void	set_healthy (bool healthy)
kcenon::common::Result< std::string >	execute_query (const std::string &query)
int	get_query_count () const

Private Attributes
std::atomic< bool >	is_healthy_ {true}
std::atomic< int >	query_count_ {0}
std::mt19937	rng_ {std::random_device{}()}

Detailed Description

Examples

health_reliability_example.cpp.

Definition at line 34 of file health_reliability_example.cpp.

Member Function Documentation

execute_query()

kcenon::common::Result< std::string > DatabaseConnection::execute_query ( const std::string & query )

inline

Examples

health_reliability_example.cpp.

Definition at line 45 of file health_reliability_example.cpp.

                                                                        {
        query_count_++;
        
        // Simulate latency
        std::this_thread::sleep_for(10ms);
        
        // Simulate failures
        if (!is_healthy_) {
            return kcenon::common::Result<std::string>::err(error_info(monitoring_error_code::service_unavailable, "Database connection lost").to_common_error());
        }
        
        // Random transient failures (10% chance)
        std::uniform_int_distribution<> dist(1, 10);
        if (dist(rng_) == 1) {
            return kcenon::common::Result<std::string>::err(error_info(monitoring_error_code::operation_timeout, "Query timeout").to_common_error());
        }
        
        return kcenon::common::ok("Query result for: " + query);
    }

References is_healthy_, query_count_, and rng_.

get_query_count()

int DatabaseConnection::get_query_count ( ) const

inline

Examples

health_reliability_example.cpp.

Definition at line 65 of file health_reliability_example.cpp.

{ return query_count_; }

References query_count_.

set_healthy()

void DatabaseConnection::set_healthy ( bool healthy )

inline

Examples

health_reliability_example.cpp.

Definition at line 41 of file health_reliability_example.cpp.

                                   {
        is_healthy_ = healthy;
    }

References kcenon::monitoring::healthy, and is_healthy_.

Member Data Documentation

is_healthy_

std::atomic<bool> DatabaseConnection::is_healthy_ {true}

private

Examples

health_reliability_example.cpp.

Definition at line 36 of file health_reliability_example.cpp.

{true};

Referenced by execute_query(), and set_healthy().

query_count_

std::atomic<int> DatabaseConnection::query_count_ {0}

private

Examples

health_reliability_example.cpp.

Definition at line 37 of file health_reliability_example.cpp.

{0};

Referenced by execute_query(), and get_query_count().

rng_

std::mt19937 DatabaseConnection::rng_ {std::random_device{}()}

private

Examples

health_reliability_example.cpp.

Definition at line 38 of file health_reliability_example.cpp.

{std::random_device{}()};

Referenced by execute_query().

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

• examples/health_reliability_example.cpp