[jira] [Created] (CAMEL-24865) camel-jbang - camel run --source-dir breaks the Java language and the datasource auto-configure: a missing classpath resource is replaced by a file that does not exist

["Claus Ibsen (Jira)" <ji...@apache.org>]

Claus Ibsen created CAMEL-24865:
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             Summary: camel-jbang - camel run --source-dir breaks the Java language and the datasource auto-configure: a missing classpath resource is replaced by a file that does not exist
                 Key: CAMEL-24865
                 URL: https://issues.apache.org/jira/browse/CAMEL-24865
             Project: Camel
          Issue Type: Bug
          Components: camel-jbang
            Reporter: Claus Ibsen


With {{camel run --source-dir=<dir>}}, a resource {{classpath:x}} that is not on the classpath is replaced by {{file:<dir>/x}} whether that file exists or not (DependencyDownloaderResourceLoader, the source-dir branch). The Java language loads {{classpath:camel-joor.properties?optional=true}} at init: under --source-dir it gets a file resource that does not exist, the optional intent is lost, and the init fails with "Cannot load resource classpath:camel-joor.properties" (logged as an ignored WARN on the context initializing event). The datasource auto-configure script for {{spring.datasource.*}} is compiled by that language, so an app with a datasource fails at startup with "Property 'dataSource' is required", while the same files run fine without --source-dir.

Reproduce: the sql example on an in-memory H2 (spring.datasource.url=jdbc:h2:mem:shop, driverClassName=org.h2.Driver, camel.jbang.dependencies=com.h2database:h2:2.3.232): {{camel run sql.camel.yaml application.properties}} creates the table; {{camel run --source-dir=. --dev}} fails.

Fix: the source-dir branch falls back to the file only when it exists, the way the route-directory branch added in CAMEL-24852 does; otherwise the original (not found) answer is returned so ?optional=true keeps working and an error names the resource as written. Matters now because CAMEL-24861 makes the camel-jbang-mcp run tool start every project with --source-dir.



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