Struct RpcV2Cbor 

pub struct RpcV2Cbor { /* private fields */ }

Stateful schema-driven Smithy RPC v2 CBOR protocol implementation.

Non-POST requests return 405 by default. Set the boolean customizationConfig.protocols["smithy.protocols#rpcv2Cbor"].methodNotAllowedAsNotFound to true to return the Java server’s unknown-operation 404 instead.

Trait Implementations

impl Debug for RpcV2Cbor

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

Formats the value using the given formatter.

impl Default for RpcV2Cbor

fn default() -> Self

Returns the “default value” for a type.

impl MetadataRoutedProtocol for RpcV2Cbor

fn from_build_context( ctx: &ProtocolBuildContext<'_>, ) -> Result<Self, RouterBuildError>

Builds this protocol for a service, from its registered configuration. Invalid configuration fails the service build.

fn build_router( &self, ctx: RouterBuildContext<'_>, ) -> Result<impl MetadataProtocolRouter + 'static + use<>, RouterBuildError>

Builds operation routing once for this service.

fn event_stream_framing(&self) -> Option<EventStreamFraming<'_>>

Event-frame support, when this protocol supports event streams.

impl ServerProtocol for RpcV2Cbor

fn serialize_routing_error(&self, err: &RoutingError) -> Response

Method mismatches return the generated serde server’s bare 405 by default. The methodNotAllowedAsNotFound setting selects the unknown-operation 404 instead. Unsupported operations return an empty 501. Every other routing rejection, including framing violations such as a forbidden x-amz-target/x-amzn-target header or an invalid smithy-protocol value, returns the generated serde empty 404 for a single-protocol service. Multi-protocol services serialize the CBOR unknown-operation error after claiming.

fn serialize_rejection(&self, err: DeserializeError) -> Response

rpcv2Cbor’s From<RequestRejection> collapses every transport failure into a 400 Serialization (body 0xa0, no __type, upstream #3716, and no smithy-protocol header). A constraint violation serializes the modeled validation error, __type first, full shape ID, but through the response engine directly rather than Self::serialize_error: rejection responses must NOT carry the smithy-protocol header, which is reserved for handler-returned responses. An invalid initial request frame uses the shared validation error’s CBOR encoding.

fn protocol_id(&self) -> &'static ShapeId<'static>

The protocol trait’s shape ID, such as aws.protocols#restJson1.

fn validate_request_headers( &self, operation: &OperationSchema<'_>, headers: &Headers, ) -> Result<(), DeserializeError>

Validates request headers for the selected operation before upgrade body collection and Self::deserialize_request. Header failures therefore take precedence over deserialization failures. The built-in protocols check Accept against the response content type. The default accepts all headers.

fn request_body_requirement( &self, operation: &OperationSchema<'_>, ) -> BodyDirective

Specifies whether deserialization needs the request body. The default collects it.

fn deserialize_request<'a>( &'a self, input: &Schema<'_>, request: &'a Request<Bytes>, ) -> Result<Box<dyn ShapeDeserializer + 'a>, DeserializeError>

Presents request as a deserializer for input.

fn serialize_response( &self, output: &Schema<'_>, value: &dyn SerializableStruct, ) -> Response

Serializes value as a complete in-memory response for output.

fn serialize_streaming_response( &self, output: &Schema<'_>, value: &dyn SerializableStruct, streaming_member: &Schema<'_>, body: Option<BoxBody>, ) -> Response

Serializes a streaming response for output around a caller-supplied body.

fn serialize_error(&self, error: &dyn HttpModeledError) -> Response

Serializes a modeled error with the protocol’s discriminator framing.

fn serialize_runtime_error(&self, error: RuntimeError) -> Response

Frames a shared extractor runtime error using this protocol’s runtime-error contract.