Enum GraphError 

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

Available on crate feature graph only.

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>) -> GraphError

Create a node not found error.

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

Create an execution failed error.

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

Create a persistence error.

Trait Implementations

impl Debug for GraphError

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

Formats the value using the given formatter.

impl Display for GraphError

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

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) -> GraphError

Converts to this type from the input type.

impl From<PersistenceError> for GraphError

fn from(e: PersistenceError) -> GraphError

Converts to this type from the input type.