Struct ApplicationBuilder 

pub struct ApplicationBuilder<State = NoToken> { /* private fields */ }

Typestate builder for constructing an Application.

The builder enforces at compile time that a bot token is set before build can be called, using the NoToken / HasToken marker types.

Implementations

impl ApplicationBuilder<NoToken>

pub fn new() -> Self

Create a new builder with no token and default settings.

pub fn token(self, token: impl Into<String>) -> ApplicationBuilder<HasToken>

Set the bot token. Transitions the builder to the HasToken state.

impl<S> ApplicationBuilder<S>

pub fn request(self, request: Arc<dyn BaseRequest>) -> Self

Set a custom HTTP request backend for the bot.

pub fn base_url(self, url: impl Into<String>) -> Self

Override the base URL for Telegram Bot API requests.

pub fn base_file_url(self, url: impl Into<String>) -> Self

Override the base URL for downloading files from Telegram.

pub fn defaults(self, defaults: Defaults) -> Self

Set default values (e.g. parse_mode) applied to every API call.

pub fn arbitrary_callback_data(self, maxsize: usize) -> Self

Enable the arbitrary callback data cache with the given maximum size.

pub fn rate_limiter(self, _rl: ()) -> Self

Sets the rate-limiter placeholder (feature disabled).

pub fn context_types(self, ct: ContextTypes) -> Self

Set custom context types for the application.

pub fn concurrent_updates(self, n: usize) -> Self

Set the maximum number of concurrent update processing tasks. Minimum is 1.

pub fn post_init(self, hook: LifecycleHook) -> Self

Register a hook to run after the application has been initialized.

pub fn post_stop(self, hook: LifecycleHook) -> Self

Register a hook to run after the application has stopped.

pub fn post_shutdown(self, hook: LifecycleHook) -> Self

Register a hook to run after the application has been fully shut down.

impl ApplicationBuilder<HasToken>

pub fn build(self) -> Arc<Application>

Consume the builder and construct the Application.

Trait Implementations

impl<S> Debug for ApplicationBuilder<S>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for ApplicationBuilder<NoToken>

fn default() -> Self

Returns the “default value” for a type.