Enum OutputWriter 

pub enum OutputWriter {
    Csv(BufWriter<File>),
    Stdout,
}

Output writer for metrics snapshots.

Supports CSV file and stdout output modes.

Example

use lightbench::output::OutputWriter;
use lightbench::metrics::Stats;

let stats = Stats::new();

// CSV output
let mut writer = OutputWriter::new_csv("results.csv".into()).await.unwrap();

// Or stdout
let mut stdout_writer = OutputWriter::new_stdout();

let snapshot = stats.snapshot().await;
writer.write_snapshot(&snapshot).await.unwrap();

Variants

Csv(BufWriter<File>)

CSV file writer with buffering.

Stdout

Stdout writer.

Implementations

impl OutputWriter

pub async fn new_csv(path: String) -> Result<Self, FrameworkError>

Create a new CSV file writer.

Creates parent directories if needed and writes the CSV header.

pub fn new_stdout() -> Self

Create a stdout writer.

pub async fn write_snapshot( &mut self, snapshot: &StatsSnapshot, ) -> Result<(), FrameworkError>

Write a statistics snapshot.

For CSV mode, flushes after each write for tail-readable output.

pub async fn flush(&mut self) -> Result<(), FrameworkError>

Flush any buffered output.