Struct LoggingObserver 

pub struct LoggingObserver { /* private fields */ }

Built-in observer that logs events to stdout.

This is a simple implementation useful for development and debugging. For production use, consider implementing a custom observer that integrates with your logging/tracing infrastructure.

Examples

use ferrous_di::{ServiceCollection, LoggingObserver};
use std::sync::Arc;

let mut services = ServiceCollection::new();
services.add_observer(Arc::new(LoggingObserver::new()));

// All resolutions will be logged to stdout
let provider = services.build();

Implementations

impl LoggingObserver

pub fn new() -> Self

Creates a new logging observer with default prefix.

pub fn with_prefix(prefix: impl Into<String>) -> Self

Creates a new logging observer with a custom prefix.

Trait Implementations

impl Default for LoggingObserver

fn default() -> Self

Returns the “default value” for a type.

impl DiObserver for LoggingObserver

fn resolving(&self, key: &Key)

Called when starting to resolve a service.

fn resolved(&self, key: &Key, duration: Duration)

Called when a service is successfully resolved.

fn factory_panic(&self, key: &Key, message: &str)

Called when a factory function panics during resolution.

fn resolving_with_context(&self, key: &Key, context: &ObservationContext)

Called when starting to resolve a service with workflow context.

fn resolved_with_context( &self, key: &Key, duration: Duration, context: &ObservationContext, )

Called when a service is successfully resolved with workflow context.

fn factory_panic_with_context( &self, key: &Key, message: &str, context: &ObservationContext, )

Called when a factory function panics during resolution with workflow context.