[I] CamelAtomITest fails: ResourceResolver SPI (file scheme) not resolved via OSGi bridging [camel-karaf]

["jbonofre (via GitHub)" <gi...@apache.org>]

jbonofre opened a new issue, #754:
URL: https://github.com/apache/camel-karaf/issues/754

   ## Summary
   
   `CamelAtomITest.testResultMock` (in `tests/features/camel-atom`) fails consistently on both Java 17 and Java 21 in CI, and reproduces 100% of the time locally. This surfaced only after PR #753 fixed the underlying OSGi feature-resolution failures that had always blocked the `Build` check before the `Test` job could ever run.
   
   ## Symptom
   
   ```
   CamelAtomITest.testResultMock:43 mock://camel-atom-test Received message count. Expected: <7> but was: <0>
   ```
   
   `karaf.log` shows the atom consumer repeatedly failing to poll the local test feed file:
   
   ```
   Failed polling endpoint: atom://file:.../feed.atom?delay=500. Will try again at next poll.
   Caused by: [java.lang.IllegalArgumentException - Cannot find a ResourceResolver in classpath supporting the scheme: file]
   ```
   
   ## Root cause (as far as traced)
   
   - `camel-atom`'s `AtomEntryPollingConsumer` reads non-HTTP feed URIs via `org.apache.camel.support.ResourceHelper.resolveMandatoryResourceAsInputStream(...)`.
   - That resolves through `DefaultResourceLoader.getResourceResolver("file")`, which looks up `META-INF/services/org/apache/camel/resource-resolver/file` via `CamelContextExtension.getBootstrapFactoryFinder(String)`.
   - By bytecode inspection of `camel-base` 4.22.0, `AbstractCamelContext.createBootstrapFactoryFinder(String)` does delegate to `PluginHelper.getFactoryFinderResolver(...).resolveBootstrapFactoryFinder(classResolver, path)`, which should route through camel-karaf's `OsgiFactoryFinderResolver` → `OsgiFactoryFinder` (which scans all installed bundles for the SPI file — confirmed present in the installed `camel-base-engine` bundle).
   - At runtime, however, none of the `Osgi*Resolver` DEBUG log markers in `core/camel-core-osgi` (`OsgiFactoryFinderResolver`, `OsgiComponentResolver`, etc.) ever fire for this test's `CamelContext`, suggesting the OSGi-aware resolver bridge is not actually being consulted for this lookup path, even though `AbstractCamelRouteLauncher` does construct an `OsgiDefaultCamelContext`.
   - Attempts to confirm this further via Pax Exam container DEBUG logging were inconclusive: `org.ops4j.pax.logging.DefaultServiceLog.level=DEBUG` did not surface any DEBUG-level output at all in `karaf.log`, so the exact point where the resolver chain diverges from the OSGi-aware path was not conclusively pinned down with a debugger/instrumentation.
   
   ## Scope note
   
   Per this repo's AI agent guidelines (`CLAUDE.md`), this needs investigation to determine whether the gap is:
   - a **camel-karaf** issue (the `core/camel-core-osgi` OSGi bridging not covering the newer `ResourceResolver` SPI / the parameterized `getBootstrapFactoryFinder(String)` path the way it covers `Component`/`Language`/`DataFormat` resolution), or
   - an **Apache Camel core** issue (the newer parameterized bootstrap factory finder overload not honoring a custom `FactoryFinderResolver` the way the no-arg one does).
   
   ## Reproduction
   
   ```
   mvn -pl tests/features/camel-atom install -Ddump.logs.on.failure=true
   ```
   
   Fails 100% of the time locally (macOS, JDK 17) and in CI (Linux, JDK 17 and 21).
   
   ## Context
   
   Discovered while investigating why `Test (Java 17)` / `Test (Java 21)` checks on PR #753 failed even after the `Build` check was fixed — this is the only test failure in that run (the reactor stopped at the first failure alphabetically, so it's not yet confirmed whether other similarly-shaped tests would fail too once this one is resolved).
   
   ---
   
   _Investigated by an AI coding agent (Claude Code) on behalf of JB Onofré, while working on PR #753 (Camel 4.22.0 upgrade)._


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Re: [I] CamelAtomITest fails: ResourceResolver SPI (file scheme) not resolved via OSGi bridging [camel-karaf]

["jbonofre (via GitHub)" <gi...@apache.org>]

jbonofre closed issue #754: CamelAtomITest fails: ResourceResolver SPI (file scheme) not resolved via OSGi bridging
URL: https://github.com/apache/camel-karaf/issues/754


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