Enum ObserverError 

#[non_exhaustive]
pub enum ObserverError {
    InvalidCondition {
        message: String,
    },
    TemplateError {
        message: String,
    },
    ActionFailed {
        action: String,
        message: String,
    },
    InvalidConfig {
        message: String,
    },
    ProcessingFailed {
        message: String,
    },
    MaxRetriesExceeded {
        event_id: String,
    },
    Database(Error),
}

Domain-level observer errors for RuntimeError aggregation.

These are the client-facing observer error variants. For operational observer errors with structured OB-codes (used in logging and retry decisions), see fraiseql_observers::ObserverError.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

InvalidCondition

The observer’s trigger condition expression could not be parsed or evaluated.

Fields

message: String

Description of why the condition is invalid.

TemplateError

An error occurred while rendering an observer action template (e.g. an email body or webhook payload template).

Fields

message: String

Description of the template rendering failure.

ActionFailed

The configured action (e.g. HTTP call, notification dispatch) failed to execute.

Fields

action: String

Name or type of the action that failed.

message: String

Reason for the failure.

InvalidConfig

The observer definition contains an invalid or inconsistent configuration value.

Fields

message: String

Description of the configuration problem.

ProcessingFailed

The event payload could not be processed (e.g. deserialization failed or required fields were missing).

Fields

message: String

Description of the processing failure.

MaxRetriesExceeded

The event has been retried the maximum number of times without succeeding and is being moved to the dead-letter queue.

Fields

event_id: String

Identifier of the event that exhausted its retry budget.

Database(Error)

A database error occurred while recording observer state or audit logs.

Implementations

impl ObserverError

pub const fn error_code(&self) -> &'static str

Returns a short, stable error code string suitable for API responses and structured logging.

Trait Implementations

impl Debug for ObserverError

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

Formats the value using the given formatter.

impl Display for ObserverError

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

Formats the value using the given formatter.

impl Error for ObserverError

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 ObserverError

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<ObserverError> for RuntimeError

fn from(source: ObserverError) -> Self

Converts to this type from the input type.