Struct SchemaCache 

pub struct SchemaCache<C: HttpClient = UreqClient> { /* private fields */ }

A disk-backed cache for JSON Schema files.

Schemas are fetched via HTTP and stored as <cache_dir>/<hash>.json where <hash> is a hex-encoded hash of the URI. When a schema is requested, the cache is checked first; on a miss the schema is fetched and written to disk for future use.

Implementations

impl<C: HttpClient> SchemaCache<C>

pub fn new(cache_dir: Option<PathBuf>, client: C) -> Self

pub fn fetch( &self, uri: &str, ) -> Result<(Value, CacheStatus), Box<dyn Error + Send + Sync>>

Fetch a schema by URI, using the disk cache when available.

Returns the parsed schema and a CacheStatus indicating whether the result came from the disk cache, the network, or caching was disabled.

Trait Implementations

impl<C: HttpClient> AsyncRetrieve for SchemaCache<C>

fn retrieve<'life0, 'life1, 'async_trait>( &'life0 self, uri: &'life1 Uri<String>, ) -> Pin<Box<dyn Future<Output = Result<Value, Box<dyn Error + Send + Sync>>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Asynchronously retrieve a resource from the given URI.

impl<C: Clone + HttpClient> Clone for SchemaCache<C>

fn clone(&self) -> SchemaCache<C>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<C: HttpClient> Retrieve for SchemaCache<C>

fn retrieve( &self, uri: &Uri<String>, ) -> Result<Value, Box<dyn Error + Send + Sync>>

Attempt to retrieve a resource from the given URI.