Struct TaskRefused 

pub struct TaskRefused {
    pub workflow_id: Option<WorkflowId>,
    pub activity_id: Option<ActivityId>,
    pub reason: String,
    pub completion_token: String,
}

A worker declining ONE pushed task because it has no free execution slot.

Not a failure and not an attempt. The server re-parks the dispatch with no clock started, corrects its own per-worker in-flight count, and re-selects; nothing is recorded against the activity and its attempt number is untouched.

With capacity on the wire the server should never push past a worker’s advertised concurrency, so this frame exists for the case where the two accountings have DRIFTED — a reconnect race, a redelivery joining an outstanding generation — and a drifted count must not become a false failure.

Deliberately distinct from the server’s own intake refusal: that is the server’s verdict about a channel it owns, this is the worker’s answer about its own admission. Two facts, two types.

Fields

workflow_id: Option<WorkflowId>

Workflow whose activity is being declined.

activity_id: Option<ActivityId>

Activity within that workflow, echoed from the ActivityTask.

reason: String

Operator-facing reason the worker declined, in the worker’s own words.

completion_token: String

Verbatim execution-generation token from the ActivityTask. Load-bearing: a refusal from a superseded generation must not re-park the attempt that superseded it, and the token is what the server’s fence checks that with.

Trait Implementations

impl Clone for TaskRefused

fn clone(&self) -> TaskRefused

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TaskRefused

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

Formats the value using the given formatter.

impl Default for TaskRefused

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for TaskRefused

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for TaskRefused

impl Hash for TaskRefused

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Message for TaskRefused

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 TaskRefused

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for TaskRefused

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 TaskRefused