a3s-boot 0.1.0

Adapter-first modular Rust web framework for A3S inspired by Nest.js
Documentation 
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use thiserror::Error;

/// Errors returned while building or serving a Boot application.
#[derive(Debug, Error)]
pub enum BootError {
    #[error("module name cannot be empty")]
    EmptyModuleName,
    #[error("route path must start with '/': {0}")]
    InvalidRoutePath(String),
    #[error("route is already registered: {0}")]
    DuplicateRoute(String),
    #[error("route was not found: {0}")]
    NotFound(String),
    #[error("method is not allowed: {0}")]
    MethodNotAllowed(String),
    #[error("provider token is already registered: {0}")]
    DuplicateProvider(String),
    #[error("provider token is not registered: {0}")]
    MissingProvider(String),
    #[error("provider token has a different concrete type: {0}")]
    ProviderTypeMismatch(String),
    #[error("request was forbidden: {0}")]
    Forbidden(String),
    #[error("request was unauthorized: {0}")]
    Unauthorized(String),
    #[error("bad request: {0}")]
    BadRequest(String),
    #[error("payload is too large: {0}")]
    PayloadTooLarge(String),
    #[error("unsupported media type: {0}")]
    UnsupportedMediaType(String),
    #[error("not acceptable: {0}")]
    NotAcceptable(String),
    #[error("adapter error: {0}")]
    Adapter(String),
    #[error("internal error: {0}")]
    Internal(String),
    #[error("I/O error: {0}")]
    Io(#[from] std::io::Error),
}

impl BootError {
    /// HTTP status code that adapters should use for this error.
    pub fn http_status_code(&self) -> u16 {
        match self {
            Self::NotFound(_) => 404,
            Self::MethodNotAllowed(_) => 405,
            Self::Unauthorized(_) => 401,
            Self::Forbidden(_) => 403,
            Self::BadRequest(_) => 400,
            Self::PayloadTooLarge(_) => 413,
            Self::UnsupportedMediaType(_) => 415,
            Self::NotAcceptable(_) => 406,
            _ => 500,
        }
    }

    /// Text response body that adapters should use for this error.
    pub fn http_response_message(&self) -> String {
        match self {
            Self::NotFound(message)
            | Self::MethodNotAllowed(message)
            | Self::Unauthorized(message)
            | Self::Forbidden(message)
            | Self::BadRequest(message)
            | Self::PayloadTooLarge(message)
            | Self::UnsupportedMediaType(message)
            | Self::NotAcceptable(message) => message.clone(),
            error => error.to_string(),
        }
    }

    pub(crate) fn clone_for_filter(&self) -> Self {
        match self {
            Self::EmptyModuleName => Self::EmptyModuleName,
            Self::InvalidRoutePath(message) => Self::InvalidRoutePath(message.clone()),
            Self::DuplicateRoute(message) => Self::DuplicateRoute(message.clone()),
            Self::NotFound(message) => Self::NotFound(message.clone()),
            Self::MethodNotAllowed(message) => Self::MethodNotAllowed(message.clone()),
            Self::DuplicateProvider(message) => Self::DuplicateProvider(message.clone()),
            Self::MissingProvider(message) => Self::MissingProvider(message.clone()),
            Self::ProviderTypeMismatch(message) => Self::ProviderTypeMismatch(message.clone()),
            Self::Forbidden(message) => Self::Forbidden(message.clone()),
            Self::Unauthorized(message) => Self::Unauthorized(message.clone()),
            Self::BadRequest(message) => Self::BadRequest(message.clone()),
            Self::PayloadTooLarge(message) => Self::PayloadTooLarge(message.clone()),
            Self::UnsupportedMediaType(message) => Self::UnsupportedMediaType(message.clone()),
            Self::NotAcceptable(message) => Self::NotAcceptable(message.clone()),
            Self::Adapter(message) => Self::Adapter(message.clone()),
            Self::Internal(message) => Self::Internal(message.clone()),
            Self::Io(error) => Self::Io(std::io::Error::new(error.kind(), error.to_string())),
        }
    }
}