Struct LifespanHooks 

pub struct LifespanHooks {
    pub on_startup: Option<StartupHook>,
    pub on_shutdown: Option<ShutdownHook>,
}

Lifecycle hooks for server startup and shutdown.

These hooks allow custom initialization and cleanup logic to run at well-defined points in the server lifecycle:

• on_startup: Called before the server starts accepting connections
• on_shutdown: Called when the server is shutting down

Example

use fastmcp_rust::prelude::*;

Server::new("demo", "1.0.0")
    .on_startup(|| {
        println!("Initializing...");
        // Initialize database, caches, etc.
        Ok(())
    })
    .on_shutdown(|| {
        println!("Cleaning up...");
        // Close connections, flush buffers, etc.
    })
    .run_stdio();

Fields

on_startup: Option<StartupHook>

Hook called before the server starts accepting connections.

on_shutdown: Option<ShutdownHook>

Hook called when the server is shutting down.

Implementations

impl LifespanHooks

pub fn new() -> Self

Creates empty lifecycle hooks.

Trait Implementations

impl Default for LifespanHooks

fn default() -> LifespanHooks

Returns the “default value” for a type.