Enum NnsNeuronError 

pub enum NnsNeuronError {
    Governance(NnsGovernanceError),
    InvalidPageSize {
        page_size: u32,
        max_page_size: u32,
    },
    GovernanceResponse {
        error_type: i32,
        message: String,
    },
    NeuronNotFound {
        neuron_id: u64,
    },
    MissingNeuronId,
    InvalidResponse {
        reason: String,
    },
    InvalidCollectionMaxPages,
    InvalidCollectionState {
        reason: String,
    },
    CollectionRequestMismatch {
        field: &'static str,
        expected: String,
        actual: String,
    },
    CollectionComplete {
        pages_fetched: u32,
    },
    CollectionPageLimitReached {
        pages_fetched: u32,
        max_pages: u32,
    },
    CollectionSourceChanged {
        expected: NnsGovernanceSourceProvenance,
        actual: NnsGovernanceSourceProvenance,
    },
    CollectionAccountingOverflow,
}

NnsNeuronError

Portable failure returned while collecting or assembling neuron reports.

Variants

Governance(NnsGovernanceError)

Shared Governance request, transport, or provenance validation failed.

InvalidPageSize

The requested page size is outside Governance’s supported range.

Fields

page_size: u32

Rejected page size.

max_page_size: u32

Largest page supported by Governance.

GovernanceResponse

Governance returned its typed application-level error.

Fields

error_type: i32

Raw Governance error type.

message: String

Governance error message.

NeuronNotFound

Governance has no publicly readable view for the requested neuron id.

Fields

neuron_id: u64

Requested neuron identifier.

MissingNeuronId

Governance returned a neuron row without its required identifier.

InvalidResponse

A source page or detail row violated the neuron contract.

Fields

reason: String

Response invariant that failed.

InvalidCollectionMaxPages

A resumable collection was configured without any page capacity.

InvalidCollectionState

Serialized or caller-modified resumable collection state is inconsistent.

Fields

reason: String

Deterministic state invariant that failed.

CollectionRequestMismatch

A continuation request changed an identity fixed when collection started.

Fields

field: &'static str

Fixed request field that changed.

expected: String

Value retained by the collection state.

actual: String

Value supplied by the continuation request.

CollectionComplete

A caller attempted to advance a collection that already exhausted the API.

Fields

pages_fetched: u32

Pages admitted before API exhaustion.

CollectionPageLimitReached

A caller attempted to advance a collection after consuming its page budget.

Fields

pages_fetched: u32

Pages admitted before the stopped advance.

max_pages: u32

Configured cumulative page ceiling.

CollectionSourceChanged

A later collection page was returned by a different collector.

Fields

expected: NnsGovernanceSourceProvenance

Concrete source retained from the first admitted page.

actual: NnsGovernanceSourceProvenance

Concrete source returned with the candidate page.

CollectionAccountingOverflow

Cumulative page or row accounting exceeded its integer representation.

Trait Implementations

impl Debug for NnsNeuronError

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

Formats the value using the given formatter.

impl Display for NnsNeuronError

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

Formats the value using the given formatter.

impl Error for NnsNeuronError

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<NnsGovernanceError> for NnsNeuronError

fn from(source: NnsGovernanceError) -> Self

Converts to this type from the input type.