Enum SubscriptionError 

pub enum SubscriptionError {
    ParseError(String),
    UnknownTable(String),
    NotFound(SubscriptionId),
    ChannelClosed,
    ConnectionLimitExceeded {
        current: usize,
        max: usize,
    },
    GlobalLimitExceeded {
        current: usize,
        max: usize,
    },
    ResultSetTooLarge {
        rows: usize,
        max: usize,
    },
    RateLimited {
        retry_after_ms: u64,
    },
}

Errors that can occur during subscription operations

Variants

ParseError(String)

Failed to parse the subscription query

UnknownTable(String)

The query references unknown tables

NotFound(SubscriptionId)

The subscription was not found

ChannelClosed

Failed to send notification to subscriber

ConnectionLimitExceeded

Per-connection subscription limit exceeded

Fields

current: usize

Current number of subscriptions for this connection

max: usize

Maximum allowed subscriptions per connection

GlobalLimitExceeded

Global subscription limit exceeded

Fields

current: usize

Current total subscriptions across all connections

max: usize

Maximum allowed subscriptions globally

ResultSetTooLarge

Result set too large for subscription

Fields

rows: usize

Number of rows in the result set

max: usize

Maximum allowed rows per subscription

RateLimited

Rate limit exceeded for subscription creation

Fields

retry_after_ms: u64

Milliseconds to wait before retrying

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.