Struct Dispatcher 

pub struct Dispatcher {
    pub type: i32,
    pub dist_key_indices: Vec<u32>,
    pub output_mapping: Option<DispatchOutputMapping>,
    pub hash_mapping: Option<ActorMapping>,
    pub dispatcher_id: u64,
    pub downstream_actor_id: Vec<ActorId>,
}

A dispatcher redistribute messages. We encode both the type and other usage information in the proto.

Fields

type: i32

dist_key_indices: Vec<u32>

Indices of the columns to be used for hashing. For dispatcher types other than HASH, this is ignored.

output_mapping: Option<DispatchOutputMapping>

The method to map the upstream columns in the dispatcher before dispatching.

hash_mapping: Option<ActorMapping>

The hash mapping for consistent hash. For dispatcher types other than HASH, this is ignored.

dispatcher_id: u64

Dispatcher can be uniquely identified by a combination of actor id and dispatcher id. This is exactly the same as its downstream fragment id.

downstream_actor_id: Vec<ActorId>

Number of downstreams decides how many endpoints a dispatcher should dispatch.

Implementations

impl Dispatcher

pub fn type(&self) -> DispatcherType

Returns the enum value of type, or the default if the field is set to an invalid enum value.

pub fn set_type(&mut self, value: DispatcherType)

Sets type to the provided enum value.

impl Dispatcher

pub fn get_type(&self) -> Result<DispatcherType, PbFieldNotFound>

pub fn get_dist_key_indices(&self) -> &Vec<u32>

pub fn get_output_mapping( &self, ) -> Result<&DispatchOutputMapping, PbFieldNotFound>

pub fn get_hash_mapping(&self) -> Result<&ActorMapping, PbFieldNotFound>

pub fn get_dispatcher_id(&self) -> u64

pub fn get_downstream_actor_id(&self) -> &Vec<ActorId>

impl Dispatcher

pub fn as_strategy(&self) -> DispatchStrategy

Trait Implementations

impl Clone for Dispatcher

fn clone(&self) -> Dispatcher

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Dispatcher

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

Formats the value using the given formatter.

impl Default for Dispatcher

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Dispatcher

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

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Message for Dispatcher

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 Dispatcher

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

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 Dispatcher