Struct LogFileStatsProvider 

pub struct LogFileStatsProvider { /* private fields */ }

A QueryStatsProvider that extracts stats by parsing Hyper’s JSON log file.

Hyper writes detailed query-end log entries to hyperd.log in JSON-per-line format. This provider:

1. Records the file offset before each query
2. After the query, reads new log entries from that offset
3. Finds the matching query-end entry by query text prefix
4. Parses the JSON stats into a QueryStats struct

Example

use hyperdb_api::LogFileStatsProvider;

// From an explicit path
let provider = LogFileStatsProvider::new("/path/to/hyperd.log");

// From a HyperProcess (auto-detects log path)
// let provider = LogFileStatsProvider::from_process(&hyper);

Implementations

impl LogFileStatsProvider

pub fn new(log_path: impl Into<PathBuf>) -> Self

Creates a new provider that reads from the given log file path.

The path should point to the hyperd.log file written by the Hyper server.

pub fn from_process(process: &HyperProcess) -> Self

Creates a new provider by auto-detecting the log path from a HyperProcess.

The log file is expected at <log_dir>/hyperd.log.

pub fn log_path(&self) -> &Path

Returns the log file path this provider reads from.

Trait Implementations

impl Debug for LogFileStatsProvider

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl QueryStatsProvider for LogFileStatsProvider

fn before_query(&self, _sql: &str) -> Box<dyn Any + Send>

Called before a query is executed.

fn after_query( &self, token: Box<dyn Any + Send>, sql: &str, ) -> Option<QueryStats>

Called after a query completes.