Struct DecisionChain 

pub struct DecisionChain {
    pub principal: Option<PrincipalId>,
    pub partition: Option<PartitionId>,
    pub cluster: Option<ClusterId>,
    pub index: Option<IndexName>,
}

The ordered chain of routing decisions made before a failure occurred.

Each field is populated as the request advances through the pipeline so a failure at any stage carries the full upstream context. Every field is an id (never a value), keeping the chain safe to emit in telemetry.

Fields

principal: Option<PrincipalId>

The authenticated principal, if authentication succeeded.

partition: Option<PartitionId>

The resolved partition, if resolution succeeded.

cluster: Option<ClusterId>

The target cluster, if placement resolved.

index: Option<IndexName>

The target index, if placement resolved.

Implementations

impl DecisionChain

pub fn new() -> Self

An empty chain (nothing decided yet).

Trait Implementations

impl Clone for DecisionChain

fn clone(&self) -> DecisionChain

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DecisionChain

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

Formats the value using the given formatter.

impl Default for DecisionChain

fn default() -> DecisionChain

Returns the “default value” for a type.

impl Eq for DecisionChain

impl PartialEq for DecisionChain

fn eq(&self, other: &DecisionChain) -> 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 StructuralPartialEq for DecisionChain