pub struct Reader<DB>(/* private fields */);Expand description
Read-only access to a database managed by Stateful.
Unlike Shared, this handle cannot acquire a write slot, construct or
apply batches, finalize database state, prune, or rewind. Applications
receive readers in
Application::capture
and Application::finalized so observing
finalized state cannot invalidate concurrent speculative batches.
ⓘ
use commonware_glue::stateful::db::Reader;
async fn mutate<DB>(reader: Reader<DB>) {
let _ = reader.write().await;
}Implementations§
Auto Trait Implementations§
impl<DB> !RefUnwindSafe for Reader<DB>
impl<DB> !UnwindSafe for Reader<DB>
impl<DB> Freeze for Reader<DB>
impl<DB> Send for Reader<DB>
impl<DB> Sync for Reader<DB>
impl<DB> Unpin for Reader<DB>
impl<DB> UnsafeUnpin for Reader<DB>where
Shared<DB>: UnsafeUnpin,
Blanket Implementations§
Source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
Source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
impl<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DT
Source§impl<T> FutureExt for T
impl<T> FutureExt for T
Source§fn with_context(self, otel_cx: Context) -> WithContext<Self> ⓘ
fn with_context(self, otel_cx: Context) -> WithContext<Self> ⓘ
Source§fn with_current_context(self) -> WithContext<Self> ⓘ
fn with_current_context(self) -> WithContext<Self> ⓘ
impl<A, B, T> HttpServerConnExec<A, B> for Twhere
B: Body,
Source§impl<T> Instrument for T
impl<T> Instrument for T
Source§fn instrument(self, span: Span) -> Instrumented<Self> ⓘ
fn instrument(self, span: Span) -> Instrumented<Self> ⓘ
Source§fn in_current_span(self) -> Instrumented<Self> ⓘ
fn in_current_span(self) -> Instrumented<Self> ⓘ
Source§impl<T> IntoEither for T
impl<T> IntoEither for T
Source§fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ
fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ
Converts
self into a Left variant of Either<Self, Self>
if into_left is true.
Converts self into a Right variant of Either<Self, Self>
otherwise. Read moreSource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
Converts
self into a Left variant of Either<Self, Self>
if into_left(&self) returns true.
Converts self into a Right variant of Either<Self, Self>
otherwise. Read more