EDG-788: Nevsky v2 — file-v2 and http-v2 production adapter modules

[caoccao]

Summary

Ports the File and HTTP protocol adapters to SDK v2 (Project Nevsky) as new, parallel, production-listable modules, running side by side with the untouched v1 modules. Distinct protocol-ids (file-v2 / http-v2) and Java packages (…adapters.file.v2 / …adapters.http.v2); disjoint config sections, factory registries, and REST surfaces — the two never interact.

hivemq-edge-module-file-v2

• Stateless northbound poll-only reader on AbstractProtocolAdapter (File has no connection, so doConnect acknowledges immediately).
• The five content types (BINARY, TEXT_PLAIN, TEXT_JSON, TEXT_XML, TEXT_CSV) and the 64 KB size cap are ported verbatim.
• Empty capabilities() — no write, browse, or subscription.

hivemq-edge-module-http-v2

• Owns the JDK java.net.http.HttpClient across doConnect/doDisconnect (optional trust-all TLS gated behind allowUntrustedCertificates, default off) — no third-party HTTP dependency.
• doPoll fires sendAsync and reports through the thread-safe output façade from the client's completion thread, preserving v1's per-cycle parallelism; the per-request timeout bounds every in-flight poll.
• GET/POST/PUT, custom headers, per-tag body/timeout, HiveMQ-Edge; <version> User-Agent, JSON/Base64 response decoding, and success-status filtering carried over.

Build / distribution wiring

• settings.gradle.kts includeBuild for both modules.
• build.gradle.kts edgeModule(...) + edgeProjectsToUpdate entries so both ship in the distribution and are module-loader discovered as listable v2 types.
• Each module mirrors the v1 module build (shadow jar + third-party-license consumable) so it slots into hivemqEdgeZip/hivemqEdgeFullZip.

Parity deltas (documented per-module README)

1. No auto-removal after repeated poll errors — the framework counts failures with escalating log severity instead.
2. The MQTT payload envelope belongs to the framework's northbound mappings.
3. The poll interval is per-tag (TagEntity.pollIntervalMillis).
4. HTTP: the dormant v1 southbound write path is excluded under strict parity (documented extension point).

Tests

• Module check green for both (file-v2: 7 test files; http-v2: 8, including an in-process JDK HttpServer + Awaitility for the async/concurrency/timeout paths). ErrorProne/NullAway clean, Spotless clean.
• Wired end-to-end coverage lives in the companion hivemq-edge-test PR.

Related PRs

• hivemq-edge-test: wired e2e suites + module-loader binary wiring.
• hivemq-edge-composite: composite distribution wiring.

[github-actions]

Test Results

  633 files  +10    633 suites  +10   7m 18s ⏱️ +10s
5 497 tests +66  5 494 ✅ +66  3 💤 ±0  0 ❌ ±0 
5 517 runs  +66  5 514 ✅ +66  3 💤 ±0  0 ❌ ±0 

Results for commit e41ba25. ± Comparison against base commit a52c8f6.

♻️ This comment has been updated with latest results.

[github-actions]

Coverage Report

Overall Project	66.85% -0.09%	✅
Files changed	85.63%	✅

File	Coverage
FileAdapterConfiguration.java	100%	✅
FileContentType.java	100%	✅
MappingException.java	100%	✅
HttpMethod.java	100%	✅
HttpContentType.java	100%	✅
HttpHeader.java	100%	✅
HttpProtocolAdapterFactory.java	96.24% -3.76%	✅
HttpAdapterConfiguration.java	93.58% -6.42%	✅
FileProtocolAdapterFactory.java	89.74% -10.26%	✅
HttpNode.java	83.87% -16.13%	✅
FileProtocolAdapter.java	82.94% -17.06%	✅
HttpProtocolAdapterInformation.java	80.65% -19.35%	✅
FileProtocolAdapterInformation.java	80% -20%	✅
FileNode.java	77.08% -22.92%	✅
HttpProtocolAdapter.java	76.2% -23.8%	✅

[marregui]

I found a few nits worth addressing

[caoccao]

All inline review feedback has been addressed or clarified in e41ba25. The File v2 and HTTP v2 module tests plus Spotless checks pass. Each inline thread now has a dedicated response and is resolved.

[marregui]

lgtm