feat: JSON-LD context caching and HTTP access logging#46
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Without a timeout, fetching external JSON-LD contexts (e.g. w3.org) could block indefinitely, causing EDC transfer provisioning to fail with a socket timeout. The empty close() also leaked connections from the pool after each request. - Add configurable timeout to the Apache HTTP client (default 10s) via http-client.timeout-ms property - Implement close() in JsonLdHttpResponse to release connections
Introduces a composite document loader pattern to intercept known JSON-LD context URLs and serve them from classpath resources instead of hitting the W3C servers on every policy evaluation. The loader chain (LocalContextRepository → HTTP fallback) is produced as a singleton bean to avoid recreating it on each request.
Adds a CachingContextRepository that wraps HTTP fetches with a Caffeine cache (configurable TTL via jsonld-cache.ttl-seconds). Logs distinguish local classpath hits, cache hits, and HTTP fetches. The httpFallback in CompositeDocumentLoader is removed — the cache layer is now the last and exhaustive resolver in the chain.
Adds ContainerRequestFilter/ContainerResponseFilter for inbound requests (remote IP, X-Forwarded-For, protocol, method, path, status, duration) and ClientRequestFilter/ClientResponseFilter for outbound REST client calls. Configurable exclude-paths for server log. OPA REST client registered with the outgoing filter via providers config.
wistefan
requested changes
May 19, 2026
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| @Slf4j | ||
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| @ApplicationScoped |
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Not fully sure, but I think the request filter needs to be annotated with@RegisterForReflection to work on native images
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The runner file seems to work. Claude says it isn't needed, so I guess it isn't needed.
| Long start = (Long) requestContext.getProperty(START_TIME); | ||
| if (start == null) return; | ||
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| long duration = System.currentTimeMillis() - start; |
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For testability, it would be better to use the clock interface here, instead of directly accessing System.currentTime
wistefan
approved these changes
May 20, 2026
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Improvements to JSON-LD context resolution and server observability: