Enum TreeReadError 

pub enum TreeReadError {
    Cancelled,
    EmptyBatch,
    TooManyQueries,
    WrongRootKind,
    InvalidHeightLimit,
    Cycle,
    HeightExceeded,
    InvalidRouting,
    ChildBoundsMismatch,
    AllocationFailed,
    PageTooLarge {
        observed: u64,
        maximum: u64,
    },
    Storage(ObjectStoreError),
    Decode(CanonicalDecodeError),
    Work(WorkError),
}

Sparse authenticated tree-read failures.

Variants

Cancelled

Cooperative cancellation occurred before the next storage boundary.

EmptyBatch

Batch lookup requires at least one requested name.

TooManyQueries

Batch lookup exceeds its explicit query limit.

WrongRootKind

Root object is not an authenticated tree page.

InvalidHeightLimit

Page-height bound must be positive.

Cycle

A child graph referenced an ancestor.

HeightExceeded

Traversal did not reach a leaf within its hard height bound.

InvalidRouting

Internal routing state was structurally impossible.

ChildBoundsMismatch

Parent routing bounds do not match the authenticated child frontier.

AllocationFailed

A bounded batch scratch allocation failed.

PageTooLarge

Stored page exceeds the decode/work bound.

Fields

observed: u64

Observed canonical bytes.

maximum: u64

Admitted maximum.

Storage(ObjectStoreError)

Immutable-object backend failed.

Decode(CanonicalDecodeError)

Canonical page failed decoding or semantic validation.

Work(WorkError)

Exact implementation work exceeded or overflowed its budget.

Trait Implementations

impl Debug for TreeReadError

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

Formats the value using the given formatter.

impl Display for TreeReadError

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

Formats the value using the given formatter.

impl Error for TreeReadError

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.

impl From<CanonicalDecodeError> for TreeReadError

fn from(source: CanonicalDecodeError) -> Self

Converts to this type from the input type.

impl From<ObjectStoreError> for TreeReadError

fn from(source: ObjectStoreError) -> Self

Converts to this type from the input type.

impl From<TreeReadError> for PathLookupError

fn from(source: TreeReadError) -> Self

Converts to this type from the input type.

impl From<TreeReadError> for AuthenticatedProbeError

fn from(source: TreeReadError) -> Self

Converts to this type from the input type.

impl From<WorkError> for TreeReadError

fn from(source: WorkError) -> Self

Converts to this type from the input type.