Struct mz_adapter::coord::ExecuteContextExtra

pub struct ExecuteContextExtra {
    statement_uuid: Option<StatementLoggingId>,
}

State that the coordinator must process as part of retiring command execution. ExecuteContextExtra::Default is guaranteed to produce a value that will cause the coordinator to do nothing, and is intended for use by code that invokes the execution processing flow (i.e., sequence_plan) without actually being a statement execution.

This struct must not be dropped if it contains non-trivial state. The only valid way to get rid of it is to pass it to the coordinator for retirement. To enforce this, we assert in the Drop implementation.

Fields

statement_uuid: Option<StatementLoggingId>

Implementations

impl ExecuteContextExtra

pub(crate) fn new(statement_uuid: Option<StatementLoggingId>) -> Self

pub fn is_trivial(&self) -> bool

pub fn contents(&self) -> Option<StatementLoggingId>

fn retire(self) -> Option<StatementLoggingId>

Take responsibility for the contents. This should only be called from code that knows what to do to finish up logging based on the inner value.

Trait Implementations

impl Debug for ExecuteContextExtra

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

Formats the value using the given formatter.

impl Default for ExecuteContextExtra

fn default() -> ExecuteContextExtra

Returns the “default value” for a type.

impl Drop for ExecuteContextExtra

fn drop(&mut self)

Executes the destructor for this type.