resuma 0.4.1

Resuma — SSR + Resumability + Islands + Server Actions + JS Bridge for Rust
Documentation 
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//! Last-rendered island HTML for dev refresh (`GET /_resuma/island/:instance`).

use std::collections::HashMap;

use once_cell::sync::Lazy;
use parking_lot::RwLock;

#[derive(Clone)]
struct IslandEntry {
    inner_html: String,
    chunk_id: String,
    load: String,
}

static CACHE: Lazy<RwLock<HashMap<String, IslandEntry>>> =
    Lazy::new(|| RwLock::new(HashMap::new()));

/// Store island inner HTML during SSR (called from the SSR layer).
pub fn cache_island_html(instance_id: &str, inner_html: &str, chunk_id: &str, load: &str) {
    CACHE.write().insert(
        instance_id.to_string(),
        IslandEntry {
            inner_html: inner_html.to_string(),
            chunk_id: chunk_id.to_string(),
            load: load.to_string(),
        },
    );
}

/// Full `<resuma-island>` element for HMR / refresh endpoint.
pub fn island_refresh_html(instance_id: &str) -> Option<String> {
    CACHE.read().get(instance_id).map(|entry| {
        format!(
            r#"<resuma-island data-r-chunk="{chunk}" data-r-instance="{inst}" data-r-load="{load}">{inner}</resuma-island>"#,
            chunk = entry.chunk_id,
            inst = instance_id,
            load = entry.load,
            inner = entry.inner_html,
        )
    })
}

/// Clear cache (tests).
#[doc(hidden)]
pub fn clear_island_cache() {
    CACHE.write().clear();
}