Enum FlowError 

pub enum FlowError {
    InvalidDefinition(String),
    CyclicGraph,
    UnknownNode(String),
    NodeFailed {
        node_id: String,
        execution_id: Uuid,
        reason: String,
    },
    Terminated,
    ExecutionNotFound(Uuid),
    FlowNotFound(String),
    InvalidTransition {
        action: String,
        from: String,
    },
    Json(Error),
    Internal(String),
}

All errors produced by the flow engine.

Variants

InvalidDefinition(String)

The JSON DAG definition is invalid (missing fields, bad structure).

CyclicGraph

The DAG contains a cycle, which is forbidden.

UnknownNode(String)

A referenced node ID does not exist in the flow definition.

NodeFailed

A node execution failed.

Fields

node_id: String

execution_id: Uuid

reason: String

Terminated

The execution was terminated by an external signal.

ExecutionNotFound(Uuid)

No execution found for the given ID.

FlowNotFound(String)

No flow definition found for the given name in the configured FlowStore.

InvalidTransition

The requested state transition is not valid for the current state.

Fields

action: String

from: String

Json(Error)

JSON serialization / deserialization error.

Internal(String)

An unexpected internal error.

Trait Implementations

impl Debug for FlowError

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

Formats the value using the given formatter.

impl Display for FlowError

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

Formats the value using the given formatter.

impl Error for FlowError

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 FlowError

fn from(source: Error) -> Self

Converts to this type from the input type.