Struct bigtable_rs::google::bigtable::v2::read_change_stream_response::Heartbeat

pub struct Heartbeat {
    pub continuation_token: Option<StreamContinuationToken>,
    pub estimated_low_watermark: Option<Timestamp>,
}

A periodic message with information that can be used to checkpoint the state of a stream.

Fields

continuation_token: Option<StreamContinuationToken>

A token that can be provided to a subsequent ReadChangeStream call to pick up reading at the current stream position.

estimated_low_watermark: Option<Timestamp>

An estimate of the commit timestamp that is usually lower than or equal to any timestamp for a record that will be delivered in the future on the stream. It is possible that, under particular circumstances that a future record has a timestamp is is lower than a previously seen timestamp. For an example usage see https://beam.apache.org/documentation/basics/#watermarks

Trait Implementations

impl Clone for Heartbeat

fn clone(&self) -> Heartbeat

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Heartbeat

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

Formats the value using the given formatter.

impl Default for Heartbeat

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Heartbeat

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Message for Heartbeat

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 Heartbeat

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for Heartbeat

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 Heartbeat