spring boot native image cannot run due to config file inside third-party lib

Question

I'm trying spring native with a small boot project which depends on opensaml, there are two config files inside the opensaml jar,

and the lib loads the config file by

Thread.currentThread().getContextClassLoader().getResourceAsStream(resource)

the native image failed to start due to missing the resource, then I searched some posts and added

<buildArgs>
    <arg>-H:IncludeResources=".*"</arg>
</buildArgs>

in native-maven-plugin's configuration, but still failed to load the resource.

any advice? thanks a lot.

score 1 · Answer 1 · answered May 10 '23 at 19:28

Graalvm provides native image agent, after building the jar of the project just run with agent which will generate all required configuration

java -agentlib:native-image-agent=config-output-dir=./graalcnf/ -jar target/demo-jar-with-dependencies.jar

Here is a working example config for ktor. And here is how agent generated resource configuration.

If you find a library which doesn’t work with GraalVM, please raise an issue on the reachability metadata project.

1 Answers1