pub struct BuiltinTableAppend<'a> {
coord: &'a mut Coordinator,
}
Expand description
Helper struct to run a builtin table append.
Fields§
§coord: &'a mut Coordinator
Implementations§
Source§impl<'a> BuiltinTableAppend<'a>
impl<'a> BuiltinTableAppend<'a>
Sourcepub fn background(
self,
updates: Vec<BuiltinTableUpdate>,
) -> Pin<Box<dyn Future<Output = ()> + Send + Sync + 'static>>
pub fn background( self, updates: Vec<BuiltinTableUpdate>, ) -> Pin<Box<dyn Future<Output = ()> + Send + Sync + 'static>>
Submit a write to a system table to be executed during the next group commit. This method does not trigger a group commit.
This is useful for non-critical writes like metric updates because it allows us to piggy back off the next group commit instead of triggering a potentially expensive group commit.
Note: do not call this for DDL which needs the system tables updated immediately.
Note: When in read-only mode, this will buffer the update and return immediately.
Sourcepub fn defer(
self,
updates: Vec<BuiltinTableUpdate>,
) -> Pin<Box<dyn Future<Output = ()> + Send + Sync + 'static>>
pub fn defer( self, updates: Vec<BuiltinTableUpdate>, ) -> Pin<Box<dyn Future<Output = ()> + Send + Sync + 'static>>
Submits a write to be executed during the next group commit and triggers a group commit.
Returns a Future
that resolves when the write has completed, does not block the
Coordinator.
Note: When in read-only mode, this will buffer the update and the returned future will resolve immediately, without the update actually having been written.
Sourcepub async fn execute(
self,
updates: Vec<BuiltinTableUpdate>,
) -> (Pin<Box<dyn Future<Output = ()> + Send + Sync + 'static>>, Option<Timestamp>)
pub async fn execute( self, updates: Vec<BuiltinTableUpdate>, ) -> (Pin<Box<dyn Future<Output = ()> + Send + Sync + 'static>>, Option<Timestamp>)
Submit a write to a system table.
This method will block the Coordinator on acquiring a write timestamp from the timestamp
oracle, and then returns a Future
that will complete once the write has been applied and
the write timestamp.
Note: When in read-only mode, this will buffer the update, the returned future will resolve immediately, without the update actually having been written, and no timestamp is returned.
Sourcepub async fn blocking(self, updates: Vec<BuiltinTableUpdate>)
pub async fn blocking(self, updates: Vec<BuiltinTableUpdate>)
Submit a write to a system table, blocking until complete.
Note: if possible you should use the execute(...)
method, which returns a Future
that
can be await
-ed concurrently with other tasks.
Note: When in read-only mode, this will buffer the update and the returned future will resolve immediately, without the update actually having been written.
Auto Trait Implementations§
impl<'a> Freeze for BuiltinTableAppend<'a>
impl<'a> !RefUnwindSafe for BuiltinTableAppend<'a>
impl<'a> !Send for BuiltinTableAppend<'a>
impl<'a> !Sync for BuiltinTableAppend<'a>
impl<'a> Unpin for BuiltinTableAppend<'a>
impl<'a> !UnwindSafe for BuiltinTableAppend<'a>
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