Enum OnMissing 

pub enum OnMissing {
    Error,
    Create,
}

Policy for what AttachRegistry::attach should do when the requested LocalFile path does not exist. Applies only to the local_file kind today; remote kinds (tcp, grpc) will ignore it.

Variants

Error

Return ErrorCode::FileNotFound. Default; matches the pre- existing behavior.

Create

Create an empty .hyper file at the target path first, then attach it. Requires writable: true — an empty database that the session cannot mutate has no use.

Implementations

impl OnMissing

pub fn parse(value: Option<&str>) -> Result<Self, McpError>

Parse the MCP tool parameter. None and the empty string map to OnMissing::Error so callers can omit the field.

Errors

Returns ErrorCode::InvalidArgument when value is a non-empty string other than "error" or "create".

Trait Implementations

impl Clone for OnMissing

fn clone(&self) -> OnMissing

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for OnMissing

impl Debug for OnMissing

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

Formats the value using the given formatter.

impl Default for OnMissing

fn default() -> OnMissing

Returns the “default value” for a type.

impl Eq for OnMissing

impl PartialEq for OnMissing

fn eq(&self, other: &OnMissing) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for OnMissing