Struct Transaction 

pub struct Transaction {
    pub txn_id: TransactionId,
    pub producer_id: ProducerId,
    pub producer_epoch: ProducerEpoch,
    pub state: TransactionState,
    pub partitions: HashSet<TransactionPartition>,
    pub pending_writes: Vec<PendingWrite>,
    pub offset_commits: Vec<TransactionOffsetCommit>,
    pub started_at: SystemTime,
    pub timeout: Duration,
    pub last_activity: Option<Instant>,
}

Active transaction state

Fields

txn_id: TransactionId

Transaction ID (unique per producer)

producer_id: ProducerId

Producer ID owning this transaction

producer_epoch: ProducerEpoch

Producer epoch (for fencing)

state: TransactionState

Current state

partitions: HashSet<TransactionPartition>

Partitions involved in this transaction

pending_writes: Vec<PendingWrite>

Pending writes (not yet committed)

offset_commits: Vec<TransactionOffsetCommit>

Consumer offsets to commit with this transaction

started_at: SystemTime

Transaction start time

timeout: Duration

Transaction timeout

last_activity: Option<Instant>

Last activity timestamp

Implementations

impl Transaction

pub fn new( txn_id: TransactionId, producer_id: ProducerId, producer_epoch: ProducerEpoch, timeout: Duration, ) -> Self

Create a new transaction

pub fn is_timed_out(&self) -> bool

Check if transaction has timed out

pub fn touch(&mut self)

Update last activity timestamp

pub fn add_partition(&mut self, partition: TransactionPartition)

Add a partition to the transaction

pub fn add_write( &mut self, partition: TransactionPartition, sequence: i32, offset: u64, )

Record a pending write

pub fn add_offset_commit( &mut self, group_id: String, offsets: Vec<(TransactionPartition, i64)>, )

Add consumer offset commit

pub fn write_count(&self) -> usize

Get total number of writes

pub fn affected_partitions(&self) -> impl Iterator<Item = &TransactionPartition>

Get all affected partitions

Trait Implementations

impl Clone for Transaction

fn clone(&self) -> Transaction

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Transaction

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Transaction

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for Transaction

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

where __S: Serializer,

Serialize this value into the given Serde serializer.