Struct TransformerChain 

pub struct TransformerChain { /* private fields */ }

Transformers applied in sequence.

An empty chain is free: the run skips it entirely rather than allocating a Vec per event.

Implementations

impl TransformerChain

pub fn new() -> Self

An empty chain.

pub fn with(self, transformer: impl StreamTransformer + 'static) -> Self

Appends a transformer, returning the chain for further building.

pub fn push(&mut self, transformer: impl StreamTransformer + 'static)

Appends a transformer.

pub fn len(&self) -> usize

How many transformers are in the chain.

pub fn is_empty(&self) -> bool

Whether the chain would pass every event through untouched.

pub fn transform(&mut self, event: Event) -> Vec<Event>

Runs event through every transformer in order.

Trait Implementations

impl Debug for TransformerChain

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

Formats the value using the given formatter.

impl Default for TransformerChain

fn default() -> TransformerChain

Returns the “default value” for a type.

impl StreamTransformer for TransformerChain

fn transform(&mut self, event: Event) -> Vec<Event>

Rewrites one event into zero or more events.