pub enum TransactionOutcome<T> {
Continue(T),
Rollback,
}Expand description
Outcome of a XmtpMlsStorageProvider::transaction or
XmtpMlsStorageProvider::savepoint closure.
Returning Ok(TransactionOutcome::Continue(value)) persists the transaction
and returns Ok(value) to the caller.
Returning Ok(TransactionOutcome::Rollback) rolls back the transaction
without recording a span error — the rollback was intentional.
Returning Err(e) rolls back the transaction and records status=error
on the enclosing #[db_span] / #[rpc_span] span — the error was real.
Variants§
Continue(T)
Persist the transaction and return the enclosed value.
Rollback
Roll back the transaction without treating it as an error.
Implementations§
Source§impl<T> TransactionOutcome<T>
impl<T> TransactionOutcome<T>
Sourcepub fn into_continued(self) -> T
pub fn into_continued(self) -> T
Unwrap the persisted value for call sites that never roll back.
Panics if this is a Rollback (a bug at that call site).
Trait Implementations§
Source§impl<T: Clone> Clone for TransactionOutcome<T>
impl<T: Clone> Clone for TransactionOutcome<T>
Source§fn clone(&self) -> TransactionOutcome<T>
fn clone(&self) -> TransactionOutcome<T>
Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source. Read moreSource§impl<T: Debug> Debug for TransactionOutcome<T>
impl<T: Debug> Debug for TransactionOutcome<T>
Source§impl<T: PartialEq> PartialEq for TransactionOutcome<T>
impl<T: PartialEq> PartialEq for TransactionOutcome<T>
Source§fn eq(&self, other: &TransactionOutcome<T>) -> bool
fn eq(&self, other: &TransactionOutcome<T>) -> bool
Tests for
self and other values to be equal, and is used by ==.impl<T: Eq> Eq for TransactionOutcome<T>
impl<T> StructuralPartialEq for TransactionOutcome<T>
Auto Trait Implementations§
impl<T> Freeze for TransactionOutcome<T>where
T: Freeze,
impl<T> RefUnwindSafe for TransactionOutcome<T>where
T: RefUnwindSafe,
impl<T> Send for TransactionOutcome<T>where
T: Send,
impl<T> Sync for TransactionOutcome<T>where
T: Sync,
impl<T> Unpin for TransactionOutcome<T>where
T: Unpin,
impl<T> UnsafeUnpin for TransactionOutcome<T>where
T: UnsafeUnpin,
impl<T> UnwindSafe for TransactionOutcome<T>where
T: UnwindSafe,
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Self: AllDsl,
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