Struct OperationContext 

pub struct OperationContext { /* private fields */ }

Composed resources passed from operator to services and layers.

Operator keeps a base OperationContext and replays its layers to produce the composed context passed to every service operation. The context carries runtime resources supplied by the operator stack, not caller intent for a specific operation. Operation-specific inputs live in Op* argument structs such as OpRead and OpWrite.

Service implementations should read HTTP transport, executor, and similar resources from the OperationContext they receive at the operation boundary. They should not cache those resources in the service created by Builder::build, because later layers or Operator::with_context can replace them for a derived operator.

Layers that replace the HTTP transport or executor must keep forwarding requests or tasks to the previous value. Otherwise, composed features such as retry, timeout, tracing, and metrics can be bypassed.

Implementations

impl OperationContext

pub fn new() -> Self

Create a new operation context with default runtime resources.

pub fn from_parts(http_transport: HttpTransporter, executor: Executor) -> Self

Create a new operation context from composed runtime resources.

pub fn with_http_transport(&self, http_transport: HttpTransporter) -> Self

Return a copy of this context with a different HTTP transport.

pub fn with_executor(&self, executor: Executor) -> Self

Return a copy of this context with a different executor.

pub fn into_parts(self) -> (HttpTransporter, Executor)

Split into composed resources.

pub fn http_transport(&self) -> &HttpTransporter

Get the composed HTTP transport.

pub fn executor(&self) -> &Executor

Get the composed executor.

Trait Implementations

impl Clone for OperationContext

fn clone(&self) -> OperationContext

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for OperationContext

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

Formats the value using the given formatter.

impl Default for OperationContext

fn default() -> Self

Returns the “default value” for a type.