Struct SingleMessageMetadata 

pub struct SingleMessageMetadata {
    pub properties: Vec<KeyValue>,
    pub partition_key: Option<String>,
    pub payload_size: i32,
    pub compacted_out: Option<bool>,
    pub event_time: Option<u64>,
    pub partition_key_b64_encoded: Option<bool>,
    pub ordering_key: Option<Vec<u8>>,
    pub sequence_id: Option<u64>,
    pub null_value: Option<bool>,
    pub null_partition_key: Option<bool>,
}

Fields

properties: Vec<KeyValue>

partition_key: Option<String>

payload_size: i32

compacted_out: Option<bool>

event_time: Option<u64>

the timestamp that this event occurs. it is typically set by applications. if this field is omitted, publish_time can be used for the purpose of event_time.

partition_key_b64_encoded: Option<bool>

ordering_key: Option<Vec<u8>>

Specific a key to overwrite the message key which used for ordering dispatch in Key_Shared mode.

sequence_id: Option<u64>

Allows consumer retrieve the sequence id that the producer set.

null_value: Option<bool>

Indicate if the message payload value is set

null_partition_key: Option<bool>

Indicate if the message partition key is set

Implementations

impl SingleMessageMetadata

pub fn partition_key(&self) -> &str

Returns the value of partition_key, or the default value if partition_key is unset.

pub fn compacted_out(&self) -> bool

Returns the value of compacted_out, or the default value if compacted_out is unset.

pub fn event_time(&self) -> u64

Returns the value of event_time, or the default value if event_time is unset.

pub fn partition_key_b64_encoded(&self) -> bool

Returns the value of partition_key_b64_encoded, or the default value if partition_key_b64_encoded is unset.

pub fn ordering_key(&self) -> &[u8]

Returns the value of ordering_key, or the default value if ordering_key is unset.

pub fn sequence_id(&self) -> u64

Returns the value of sequence_id, or the default value if sequence_id is unset.

pub fn null_value(&self) -> bool

Returns the value of null_value, or the default value if null_value is unset.

pub fn null_partition_key(&self) -> bool

Returns the value of null_partition_key, or the default value if null_partition_key is unset.

Trait Implementations

impl Clone for SingleMessageMetadata

fn clone(&self) -> SingleMessageMetadata

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SingleMessageMetadata

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

Formats the value using the given formatter.

impl Default for SingleMessageMetadata

fn default() -> Self

Returns the “default value” for a type.

impl Message for SingleMessageMetadata

fn encoded_len(&self) -> usize

Returns the encoded length of the message without a length delimiter.

fn clear(&mut self)

Clears the message, resetting all fields to their default.

fn encode<B>(&self, buf: &mut B) -> Result<(), EncodeError>

where B: BufMut, Self: Sized,

Encodes the message to a buffer.

fn encode_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message to a newly allocated buffer.

fn encode_length_delimited<B>(&self, buf: &mut B) -> Result<(), EncodeError>

where B: BufMut, Self: Sized,

Encodes the message with a length-delimiter to a buffer.

fn encode_length_delimited_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message with a length-delimiter to a newly allocated buffer.

fn decode<B>(buf: B) -> Result<Self, DecodeError>

where B: Buf, Self: Default,

Decodes an instance of the message from a buffer.

fn decode_length_delimited<B>(buf: B) -> Result<Self, DecodeError>

where B: Buf, Self: Default,

Decodes a length-delimited instance of the message from the buffer.

fn merge<B>(&mut self, buf: B) -> Result<(), DecodeError>

where B: Buf, Self: Sized,

Decodes an instance of the message from a buffer, and merges it into self.

fn merge_length_delimited<B>(&mut self, buf: B) -> Result<(), DecodeError>

where B: Buf, Self: Sized,

Decodes a length-delimited instance of the message from buffer, and merges it into self.

impl PartialEq for SingleMessageMetadata

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for SingleMessageMetadata