Enum DagError 

pub enum DagError {
    NodeExists(String),
    NodeNotFound(String),
    CycleDetected {
        from: String,
        to: String,
    },
    MissingParent(String),
    MissingChild(String),
    InvalidStateTransition(String),
    ConsensusError(String),
    VertexError(VertexError),
}

Errors that can occur during DAG operations

Variants

NodeExists(String)

Node already exists in the graph

NodeNotFound(String)

Node not found in the graph

CycleDetected

Invalid edge - creates a cycle

Fields

from: String

Source node of the cycle-creating edge

to: String

Target node of the cycle-creating edge

MissingParent(String)

Parent node missing for edge

MissingChild(String)

Child node missing for edge

InvalidStateTransition(String)

Invalid node state transition

ConsensusError(String)

Consensus error

VertexError(VertexError)

Vertex error

Trait Implementations

impl Debug for DagError

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

Formats the value using the given formatter.

impl Display for DagError

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

Formats the value using the given formatter.

impl Error for DagError

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<ConsensusError> for DagError

fn from(err: ConsensusError) -> Self

Converts to this type from the input type.

impl From<VertexError> for DagError

fn from(source: VertexError) -> Self

Converts to this type from the input type.