Struct EmptyHeader 

pub struct EmptyHeader {}

Trait Implementations

impl Clone for EmptyHeader

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl CommandCustomHeader for EmptyHeader

fn to_map(&self) -> Option<HashMap<CheetahString, CheetahString>>

Converts the implementing type to a map.

fn check_fields(&self) -> Result<()>

Checks the fields of the implementing type.

fn encode_into_map(&self, out: &mut HeaderMap)

Appends this header’s extension fields to an existing map.

fn try_encode_into_map( &self, out: &mut HeaderMap, ) -> Result<(), ProtocolContractViolation>

Validates and appends this header’s fields to an existing map.

fn resolve_wire_key(&self, _key: &str) -> Option<ResolvedHeaderKey>

Resolves a canonical key or decode alias for typed headers.

fn canonical_wire_key(&self, key: &str) -> Option<&'static str>

Resolves a key and returns its canonical wire key.

fn contains_wire_key(&self, key: &str) -> bool

Returns whether a canonical key or alias belongs to this header schema.

fn encoded_len_hint(&self) -> usize

Returns a saturating extension-field payload capacity hint.

fn encode_capability(&self) -> HeaderEncodeCapability

Returns the authoritative encoding path for this header.

fn encode_direct_binary( &self, _out: &mut BytesMut, ) -> Result<(), ProtocolContractViolation>

Appends this header directly to a ROCKETMQ extension-field payload.

fn supports_direct_json_fields(&self) -> bool

Returns whether this header can write its complete JSON extension-field object without first materializing a HeaderMap.

fn encode_direct_json_fields( &self, _out: &mut BytesMut, ) -> Result<(), ProtocolContractViolation>

Writes this header as one complete JSON extension-field object.

fn write_if_not_null(&self, out: &mut BytesMut, key: &str, value: &str)

Writes the provided key to the out buffer if the value is not empty.

fn encode_fast(&mut self, out: &mut BytesMut)

Compatibility adapter for the legacy mutable fast-encoding API.

fn decode_fast( &mut self, _fields: &HashMap<CheetahString, CheetahString>, ) -> Result<()>

A placeholder function for fast decoding.

fn support_fast_codec(&self) -> bool

Indicates whether the implementing type supports fast codec.

fn get_and_check_not_none( &self, map: &HashMap<CheetahString, CheetahString>, field: &CheetahString, ) -> Result<CheetahString>

Retrieves the value associated with the specified field from the provided map.

fn get_and_check_not_none_ref<'a>( &self, map: &'a HashMap<CheetahString, CheetahString>, field: &CheetahString, ) -> Result<&'a CheetahString>

Retrieves a borrowed value associated with the specified field from the provided map.

impl Debug for EmptyHeader

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

Formats the value using the given formatter.

impl Default for EmptyHeader

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for EmptyHeader

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for EmptyHeader

impl PartialEq for EmptyHeader

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for EmptyHeader

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for EmptyHeader