Struct QueryAnalyzer 

pub struct QueryAnalyzer { /* private fields */ }

Analyzer for SQL queries found in PostgreSQL logs

Implementations

impl QueryAnalyzer

pub fn new() -> Self

Create a new query analyzer with default settings

pub fn with_settings( slow_query_threshold: f64, max_slow_queries: usize, max_frequent_queries: usize, ) -> Self

Create a new query analyzer with custom settings

pub fn slow_query_threshold(&self) -> f64

Get the slow query threshold (public for testing)

pub fn max_slow_queries(&self) -> usize

Get the maximum number of slow queries to track (public for testing)

pub fn max_frequent_queries(&self) -> usize

Get the maximum number of frequent queries to track (public for testing)

pub fn analyze(&self, entries: &[LogEntry]) -> Result<AnalysisResult>

Analyze queries from log entries

pub fn analyze_events( &self, events: &[NormalizedEvent], ) -> Result<AnalysisResult>

Analyze queries from normalized events.

pub fn normalize_query(&self, sql: &str) -> String

Normalize SQL query by replacing literals with placeholders

pub fn classify_query(&self, sql: &str) -> QueryType

Classify query type based on SQL content

pub fn calculate_metrics(&self, durations: &[f64]) -> QueryMetrics

Calculate performance metrics from durations (public for testing)

pub fn find_slow_queries( &self, entries: &[LogEntry], threshold_ms: f64, ) -> Result<Vec<LogEntry>>

Find slow queries above a threshold

pub fn get_query_type_distribution( &self, entries: &[LogEntry], ) -> HashMap<QueryType, u64>

Get query type distribution

pub fn get_query_type_distribution_for_events( &self, events: &[NormalizedEvent], ) -> HashMap<QueryType, u64>

pub fn calculate_error_rate(&self, entries: &[LogEntry]) -> f64

Calculate error rate

pub fn calculate_error_rate_for_events(&self, events: &[NormalizedEvent]) -> f64

Trait Implementations

impl Default for QueryAnalyzer

fn default() -> Self

Returns the “default value” for a type.