Enum Error 

pub enum Error {
    PermissionDenied,
    NotFound,
    AlreadyExists,
    Unsupported,
    InvalidState,
    Disconnected,
    Platform(PlatformErrorCode),
}

The single error type surfaced across the Net Lattice workspace.

Provider trait methods return Result<T, Error> — never a raw OS error type (std::io::Error, a bare errno, a Windows DWORD). See ARCHITECTURE.md’s Error Model for why.

Variants

PermissionDenied

The operation requires privileges the caller does not have (e.g. CAP_NET_ADMIN on Linux, Administrator on Windows).

NotFound

The referenced object does not exist.

AlreadyExists

An object with the same identity already exists.

Unsupported

The operation has no meaning on this backend at all, as opposed to a Capability being merely absent at runtime.

InvalidState

The operation is not valid given the object’s current state.

Disconnected

An event channel’s producer (the backend’s background watcher) has shut down — no further events will ever arrive. Distinct from a timeout (which is not an error at all — see EventReceiver::recv_timeout): this means the stream is over for good, typically because the backend itself, or the connection it watches over, was dropped.

Platform(PlatformErrorCode)

Escape hatch preserving the raw backend-specific error for diagnostics. Not the primary way consumers are expected to match on failures.

Trait Implementations

impl Debug for Error

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

Formats the value using the given formatter.

impl Display for Error

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

Formats the value using the given formatter.

impl Error for Error

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.