Enum SubscriptionError 

#[non_exhaustive]
pub enum SubscriptionError {
    SubscriptionNotFound(String),
    AuthenticationRequired(String),
    Forbidden(String),
    InvalidVariables(String),
    UnresolvableFilter(String),
    AlreadyExists(String),
    NotActive(String),
    Internal(String),
    SendError(String),
    DatabaseConnection(String),
    ListenerAlreadyRunning,
    ListenerNotRunning,
    InvalidNotification(String),
    DeliveryFailed {
        transport: String,
        reason: String,
    },
}

Errors that can occur during subscription operations.

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.

SubscriptionNotFound(String)

Subscription type not found in schema.

AuthenticationRequired(String)

Authentication required for subscription.

Forbidden(String)

User not authorized for subscription.

InvalidVariables(String)

Invalid subscription variables.

UnresolvableFilter(String)

A filter references an argument the subscription does not declare (#1262).

The client sends its variables under the declared GraphQL argument names, so such a condition can never be matched — and a condition whose variable is absent is skipped by design, because that is how an unsupplied optional argument behaves. Left alone the two are indistinguishable and the subscription fails open, delivering every event on its topic. Refused at subscribe instead. fraiseql compile rejects the same shape, so this is reachable only through a hand-edited compiled schema.

AlreadyExists(String)

Subscription already exists.

NotActive(String)

Subscription not active.

Internal(String)

Internal subscription error.

SendError(String)

Channel send error.

DatabaseConnection(String)

Database connection error.

ListenerAlreadyRunning

Listener already running.

ListenerNotRunning

Listener not running.

InvalidNotification(String)

Failed to parse notification payload.

DeliveryFailed

Failed to deliver event to transport.

Fields

transport: String

Transport that failed.

reason: String

Reason for failure.

Trait Implementations

impl Debug for SubscriptionError

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

Formats the value using the given formatter.

impl Display for SubscriptionError

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

Formats the value using the given formatter.

impl Error for SubscriptionError

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.