Struct BatchProcessingConfig 

pub struct BatchProcessingConfig {
    pub max_chunk_size: usize,
    pub format: PayloadFormat,
    pub routing_field: Option<String>,
    pub pre_route_filters: Vec<PreRouteFilterConfig>,
    pub parse_error_action: ParseErrorAction,
    pub known_fields: Vec<String>,
}

Available on crate feature worker-batch and (crate features worker-batch or worker-pool or worker) only.

Configuration for the batch processing engine.

All values are overridable via the 8-layer config cascade (CLI > ENV > .env > settings.{env}.yaml > settings.yaml > defaults > rustlib > hard-coded).

Fields

max_chunk_size: usize

Maximum number of messages per rayon chunk.

Smaller chunks reduce per-task overhead; larger chunks amortise the rayon work-stealing cost. Default 10 000 matches DFE batch sizes.

format: PayloadFormat

Expected payload format (auto-detect by default).

routing_field: Option<String>

JSON field used to route messages to the correct downstream sink.

For dfe-loader this is typically "_table".

pre_route_filters: Vec<PreRouteFilterConfig>

Pre-route filters applied before routing decisions.

Evaluated in order – first match wins.

parse_error_action: ParseErrorAction

Action to take when a message fails JSON parsing.

known_fields: Vec<String>

Fields to pre-extract into super::types::ParsedMessage::Parsed::extracted for fast routing lookups.

Extracting these at parse time avoids repeated value.get() traversals during routing and filtering.

Implementations

impl BatchProcessingConfig

pub fn from_cascade(key: &str) -> Result<Self, ConfigError>

Load config from the cascade under the given key (e.g. "batch_processing").

Falls back to defaults if the config cascade is not initialised or the key is absent.

Errors

Returns a ConfigError only if the cascade is initialised and the key contains data that cannot be deserialised into BatchProcessingConfig.

Trait Implementations

impl Clone for BatchProcessingConfig

fn clone(&self) -> BatchProcessingConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BatchProcessingConfig

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

Formats the value using the given formatter.

impl Default for BatchProcessingConfig

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for BatchProcessingConfig

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for BatchProcessingConfig

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.