Trait Formatter 

pub trait Formatter: Send + Sync {
    // Required methods
    fn format(&self, result: &TestResult, use_bytes: bool) -> Result<(), Error>;
    fn format_list(&self, servers: &[Server]) -> Result<(), Error>;
}

Trait for output formatting strategies.

Implement this trait to provide custom output formatters. This enables the Open-Closed Principle: new formatters can be added without modifying existing code that uses formatters.

Example

use netspeed_cli::formatter::{Formatter, OutputFormat};
use netspeed_cli::types::{Server, TestResult};
use netspeed_cli::error::Error;

struct MyFormatter;

impl Formatter for MyFormatter {
    fn format(&self, result: &TestResult, use_bytes: bool) -> Result<(), Error> {
        println!("Custom: {:?}", result.ping);
        Ok(())
    }

    fn format_list(&self, servers: &[Server]) -> Result<(), Error> {
        println!("Servers: {}", servers.len());
        Ok(())
    }
}

Required Methods

fn format(&self, result: &TestResult, use_bytes: bool) -> Result<(), Error>

Format a test result for output.

Errors

Returns an error if output fails.

fn format_list(&self, servers: &[Server]) -> Result<(), Error>

Format a list of servers for output.

Errors

Returns an error if output fails.

Implementors

impl Formatter for OutputFormat

Allows using OutputFormat polymorphically through the trait.