Struct ListenerPipelines 

pub struct ListenerPipelines { /* private fields */ }

Maps listener names to their resolved FilterPipelines.

Each pipeline is wrapped in ArcSwap so it can be atomically replaced at runtime without blocking in-flight requests.

use std::{collections::HashMap, sync::Arc};

use praxis_filter::{FilterPipeline, FilterRegistry};
use praxis_protocol::ListenerPipelines;

let registry = FilterRegistry::with_builtins();
let pipeline = Arc::new(FilterPipeline::build(&mut [], &registry).unwrap());

let mut map = HashMap::new();
map.insert("web".to_owned(), pipeline);
let pipelines = ListenerPipelines::new(map);

assert!(pipelines.get("web").is_some());
assert!(pipelines.get("missing").is_none());

Implementations

impl ListenerPipelines

pub fn new(pipelines: HashMap<String, Arc<FilterPipeline>>) -> Self

Create from a map of listener name to pipeline.

Called by the server during startup after building filter pipelines from the loaded configuration. Each pipeline is wrapped in ArcSwap for atomic replacement during hot reloads.

pub fn get(&self, listener_name: &str) -> Option<&Arc<ArcSwap<FilterPipeline>>>

Get the swappable pipeline for a listener by name.

Called by protocol adapters on every request to access the filter pipeline. The returned ArcSwap reference allows protocol adapters to load the current pipeline without blocking reload operations.

pub fn swap(&self, listener_name: &str, new_pipeline: Arc<FilterPipeline>)

Atomically replace the pipeline for a listener.

No-op if the listener name is not present.

use std::{collections::HashMap, sync::Arc};

use praxis_filter::{FilterPipeline, FilterRegistry};
use praxis_protocol::ListenerPipelines;

let registry = FilterRegistry::with_builtins();
let old = Arc::new(FilterPipeline::build(&mut [], &registry).unwrap());
let new = Arc::new(FilterPipeline::build(&mut [], &registry).unwrap());

let mut map = HashMap::new();
map.insert("web".to_owned(), old);
let pipelines = ListenerPipelines::new(map);

pipelines.swap("web", new);
pipelines.swap(
    "nonexistent",
    Arc::new(FilterPipeline::build(&mut [], &registry).unwrap()),
);

pub fn referenced_files(&self) -> Vec<PathBuf>

Every filesystem path any filter in any listener’s pipeline reads configuration from, de-duplicated.

Two listeners can share a filter chain, so the same document would otherwise appear more than once and be watched and hashed repeatedly.

pub fn listener_names(&self) -> impl Iterator<Item = &str>

Returns an iterator over listener names.

Used during config reload to iterate over all listeners when swapping pipelines or collecting referenced files for watching.