Struct StreamActor

pub struct StreamActor {
    pub actor_id: u32,
    pub fragment_id: u32,
    pub dispatcher: Vec<Dispatcher>,
    pub vnode_bitmap: Option<Buffer>,
    pub mview_definition: String,
    pub expr_context: Option<ExprContext>,
}

A StreamActor is a running fragment of the overall stream graph,

Fields

actor_id: u32

fragment_id: u32

dispatcher: Vec<Dispatcher>

vnode_bitmap: Option<Buffer>

Vnodes that the executors in this actor own. If the fragment is a singleton, this field will not be set and leave a None.

mview_definition: String

The SQL definition of this materialized view. Used for debugging only.

expr_context: Option<ExprContext>

Provide the necessary context, e.g. session info like time zone, for the actor.

Implementations

impl StreamActor

pub fn get_actor_id(&self) -> u32

pub fn get_fragment_id(&self) -> u32

pub fn get_dispatcher(&self) -> &Vec<Dispatcher>

pub fn get_vnode_bitmap(&self) -> Result<&Buffer, PbFieldNotFound>

pub fn get_mview_definition(&self) -> &String

pub fn get_expr_context(&self) -> Result<&ExprContext, PbFieldNotFound>

Trait Implementations

impl Clone for StreamActor

fn clone(&self) -> StreamActor

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for StreamActor

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

Formats the value using the given formatter.

impl Default for StreamActor

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for StreamActor

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Message for StreamActor

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 StreamActor

fn eq(&self, other: &StreamActor) -> 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 StreamActor

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 StreamActor