Struct StatPrintSink 

pub struct StatPrintSink<'a> { /* private fields */ }

A handle that lets a Handlerton::show_status implementation push one or more rows of engine status back to MySQL. Bound to the connection and stat_print_fn MySQL handed in, so it does not outlive the callback.

Each Self::emit call surfaces as one row of SHOW ENGINE <name> STATUS: kind is the row’s type (typically the engine name), key a sub-label, and value the displayed text.

Implementations

impl<'a> StatPrintSink<'a>

pub fn emit(&self, kind: &str, key: &str, value: &str) -> bool

Push one row. Returns true when MySQL accepted the row, false when the print function reported back-pressure / failure.

Trait Implementations

impl<'a> Debug for StatPrintSink<'a>

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

Formats the value using the given formatter.