Struct Message 

pub struct Message {
    pub offset: u64,
    pub key: Option<Bytes>,
    pub value: Bytes,
    pub timestamp: DateTime<Utc>,
    pub headers: Vec<(String, Vec<u8>)>,
    pub producer_id: Option<u64>,
    pub producer_epoch: Option<u16>,
    pub transaction_marker: Option<TransactionMarker>,
    pub is_transactional: bool,
}

Represents a single message in Rivven

Fields

offset: u64

Unique offset within the partition

key: Option<Bytes>

Message key (optional, used for partitioning)

value: Bytes

Message payload

timestamp: DateTime<Utc>

Timestamp when message was created

headers: Vec<(String, Vec<u8>)>

Optional headers for metadata

producer_id: Option<u64>

Producer ID (for transactional/idempotent messages) None for non-transactional messages

producer_epoch: Option<u16>

Producer epoch (for fencing)

transaction_marker: Option<TransactionMarker>

Transaction marker (Some for control records, None for data records) Control records mark transaction boundaries (COMMIT/ABORT)

is_transactional: bool

Whether this message is part of an ongoing transaction Used for read_committed filtering

Implementations

impl Message

pub fn new(value: Bytes) -> Self

Create a new message

pub fn with_key(key: Bytes, value: Bytes) -> Self

Create a message with a key

pub fn transactional( value: Bytes, producer_id: u64, producer_epoch: u16, ) -> Self

Create a transactional message

pub fn transactional_with_key( key: Bytes, value: Bytes, producer_id: u64, producer_epoch: u16, ) -> Self

Create a transactional message with a key

pub fn control_record( marker: TransactionMarker, producer_id: u64, producer_epoch: u16, ) -> Self

Create a transaction control record (COMMIT or ABORT marker)

pub fn is_control_record(&self) -> bool

Check if this is a control record (transaction marker)

pub fn is_committed(&self) -> bool

Check if this message is from a committed transaction Note: This is set after transaction completion, not during write

pub fn add_header(self, key: String, value: Vec<u8>) -> Self

Add a header to the message

pub fn with_producer( self, producer_id: u64, producer_epoch: u16, transactional: bool, ) -> Self

Mark as transactional

pub fn to_bytes(&self) -> Result<Vec<u8>>

Serialize to bytes

pub fn from_bytes(data: &[u8]) -> Result<Self>

Deserialize from bytes

Trait Implementations

impl Clone for Message

fn clone(&self) -> Message

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Message

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Message

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for Message

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

where __S: Serializer,

Serialize this value into the given Serde serializer.