Enum ControllerSnapshotError 

#[non_exhaustive]
pub enum ControllerSnapshotError {
    EmptyCanisterSet,
    DuplicateCanisterId {
        canister_id: ExternalPrincipal,
    },
    InvalidSnapshot {
        canister_id: ExternalPrincipal,
        message: &'static str,
        cleanup_failures: Vec<SnapshotCleanupFailure>,
    },
    SnapshotCodec {
        canister_id: ExternalPrincipal,
        source: Error,
        cleanup_failures: Vec<SnapshotCleanupFailure>,
    },
    CaptureFailed {
        canister_id: ExternalPrincipal,
        sender: Option<ExternalPrincipal>,
        source: Box<PocketIcCallFailure>,
        cleanup_failures: Vec<SnapshotCleanupFailure>,
    },
    RestoreFailed {
        canister_id: ExternalPrincipal,
        sender: Option<ExternalPrincipal>,
        source: Box<PocketIcCallFailure>,
    },
}

Structured controller-snapshot failure.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

EmptyCanisterSet

A cached baseline requires at least one canister.

DuplicateCanisterId

Input contained the same canister more than once.

Fields

canister_id: ExternalPrincipal

Repeated canister id.

InvalidSnapshot

Snapshot transfer metadata or complete data admission failed.

Fields

canister_id: ExternalPrincipal

Exact canister selected for capture.

message: &'static str

Refused snapshot property, excluding source bytes.

cleanup_failures: Vec<SnapshotCleanupFailure>

Known snapshot deletions that failed during rollback.

SnapshotCodec

The external management snapshot message could not be encoded or decoded.

Fields

canister_id: ExternalPrincipal

Exact canister selected for capture.

source: Error

Original external Candid codec failure.

cleanup_failures: Vec<SnapshotCleanupFailure>

Known snapshot deletions that failed during rollback.

CaptureFailed

Snapshot capture failed with the exact selected sender.

Fields

canister_id: ExternalPrincipal

Canister whose capture failed.

sender: Option<ExternalPrincipal>

Exact sender selected for capture.

source: Box<PocketIcCallFailure>

Complete rejection or operation failure.

cleanup_failures: Vec<SnapshotCleanupFailure>

Failures while deleting snapshots captured earlier in the set.

RestoreFailed

Snapshot restore failed with the retained capture sender.

Fields

canister_id: ExternalPrincipal

Canister whose restore failed.

sender: Option<ExternalPrincipal>

Exact sender selected for restore.

source: Box<PocketIcCallFailure>

Complete rejection or operation failure.

Trait Implementations

impl Debug for ControllerSnapshotError

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

Formats the value using the given formatter.

impl Display for ControllerSnapshotError

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

Formats the value using the given formatter.

impl Error for ControllerSnapshotError

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.