Struct AgentPrewriteRequest 

pub struct AgentPrewriteRequest {
    pub cf: u32,
    pub key: Vec<u8>,
    pub primary_ref: Vec<u8>,
    pub start_ts: u64,
    pub ttl_ms: u64,
    pub fence: u64,
    pub value: Vec<u8>,
    pub delete: bool,
    pub read_only: bool,
}

Fields

cf: u32

target CF of the user key

key: Vec<u8>

user key being prewritten

primary_ref: Vec<u8>

the txn’s primary key (every secondary points back)

start_ts: u64

HLC start_ts (packed u64), from Phase 1

ttl_ms: u64

lock TTL in milliseconds

fence: u64

primary claim’s fencing token

value: Vec<u8>

provisional value for a Put (ignored when delete)

delete: bool

true = Delete intent (the value field is ignored)

read_only: bool

true = READ intent: lock the key so no concurrent transaction can commit over it, stage nothing, and release (not roll forward) at commit. This is how a cross-shard transaction detects READ-WRITE conflicts; value and delete are ignored. Re-reading the key before commit would not do — a concurrent txn could commit between the check and the primary CAS.

Trait Implementations

impl Clone for AgentPrewriteRequest

fn clone(&self) -> AgentPrewriteRequest

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AgentPrewriteRequest

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

Formats the value using the given formatter.

impl Default for AgentPrewriteRequest

fn default() -> Self

Returns the “default value” for a type.

impl Message for AgentPrewriteRequest

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(&self, buf: &mut impl BufMut) -> Result<(), EncodeError>

where 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( &self, buf: &mut impl BufMut, ) -> Result<(), EncodeError>

where 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(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes an instance of the message from a buffer.

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

where Self: Default,

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

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

where Self: Sized,

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

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

where Self: Sized,

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

impl PartialEq for AgentPrewriteRequest

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for AgentPrewriteRequest