Enum GraphError 

pub enum GraphError {
    NoEntryNode,
    NodeNotFound(String),
    CycleDetected,
    ExecutionFailed {
        node: String,
        message: String,
    },
    MaxStepsExceeded(u32),
    InvalidGraph(String),
    Persistence(String),
    Serialization(String),
    Other(Error),
}

Errors that can occur during graph execution.

Variants

NoEntryNode

No entry node defined.

NodeNotFound(String)

Node not found.

CycleDetected

Cycle detected.

ExecutionFailed

Node execution failed.

Fields

node: String

Node name.

message: String

Error message.

MaxStepsExceeded(u32)

Maximum steps exceeded.

InvalidGraph(String)

Invalid graph structure.

Persistence(String)

Persistence error.

Serialization(String)

Serialization error.

Other(Error)

Other error.

Implementations

impl GraphError

pub fn node_not_found(name: impl Into<String>) -> Self

Create a node not found error.

pub fn execution_failed( node: impl Into<String>, message: impl Into<String>, ) -> Self

Create an execution failed error.

pub fn persistence(msg: impl Into<String>) -> Self

Create a persistence error.

Trait Implementations

impl Debug for GraphError

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

Formats the value using the given formatter.

impl Display for GraphError

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

Formats the value using the given formatter.

impl Error for GraphError

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<Error> for GraphError

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<PersistenceError> for GraphError

fn from(e: PersistenceError) -> Self

Converts to this type from the input type.