Module template_events 

Template lifecycle events and hooks for monitoring template cache behavior.

This module provides an event system for tracking template operations in real-time. Users can register callbacks to be notified when templates are learned, evicted, expire, collide, or when data arrives for missing templates.

Use Cases

• Monitoring: Track template learning and eviction patterns
• Alerting: Detect template collisions that indicate configuration issues
• Metrics: Integrate with observability systems (Prometheus, StatsD, etc.)
• Debugging: Log template lifecycle events for troubleshooting
• Dynamic behavior: React to template events with custom logic

Examples

use netflow_parser::{NetflowParser, TemplateEvent, TemplateProtocol};

let parser = NetflowParser::builder()
    .on_template_event(|event| {
        match event {
            TemplateEvent::Learned { template_id, protocol } => {
                println!("Learned template {} for {:?}", template_id, protocol);
            }
            TemplateEvent::Collision { template_id, protocol } => {
                eprintln!("⚠️  Collision on template {} for {:?}", template_id, protocol);
            }
            _ => {}
        }
    })
    .build()
    .unwrap();

Structs

TemplateHooks

Container for registered template event hooks.

Enums

TemplateEvent

Template lifecycle events.

TemplateProtocol

Protocol type for template events.

Type Aliases

TemplateHook

Type alias for template event hooks.