https://bz.apache.org/bugzilla/show_bug.cgi?id=69465
Bug ID: 69465
Summary: [GraalVM 21] Fix warnings during native image
compilation
Product: Tomcat 10
Version: 10.1.31
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P2
Component: Packaging
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ------
Getting warnings during native image compilation when tomcat-embed-core,
tomcat-embed-el and tomcat-embed-websocket are included as dependencies in
GraalVM Native image builds:
```
# Warning: The option
'-H:ReflectionConfigurationResources=META-INF/native-image/org.apache.tomcat.embed/tomcat-embed-websocket/tomcat-reflection.json'
is experimental and must be enabled via '-H:+UnlockExperimentalVMOptions' in
the future.
# Warning: The option
'-H:ReflectionConfigurationResources=META-INF/native-image/org.apache.tomcat.embed/tomcat-embed-el/tomcat-reflection.json'
is experimental and must be enabled via '-H:+UnlockExperimentalVMOptions' in
the future.
# Warning: The option
'-H:ResourceConfigurationResources=META-INF/native-image/org.apache.tomcat.embed/tomcat-embed-core/tomcat-resource.json'
is experimental and must be enabled via '-H:+UnlockExperimentalVMOptions' in
the future.
# Warning: The option
'-H:ReflectionConfigurationResources=META-INF/native-image/org.apache.tomcat.embed/tomcat-embed-core/tomcat-reflection.json'
is experimental and must be enabled via '-H:+UnlockExperimentalVMOptions' in
the future.
# Warning: The option
'-H:IncludeResources=rabbitmq-amqp-client.properties|version.properties' is
experimental and must be enabled via '-H:+UnlockExperimentalVMOptions' in the
future.
# Warning: The option
'-H:ResourceConfigurationResources=META-INF/native-image/org.apache.tomcat.embed/tomcat-embed-el/tomcat-resource.json'
is experimental and must be enabled via '-H:+UnlockExperimentalVMOptions' in
the future.
# Warning: The option
'-H:ResourceConfigurationResources=META-INF/native-image/org.apache.tomcat.embed/tomcat-embed-websocket/tomcat-resource.json'
is experimental and must be enabled via '-H:+UnlockExperimentalVMOptions' in
the future.
```
Building native image with Tomcat should succeed without warnings.
More details:
JDK: GraalVM 21.0.5+9.1
spring-boot:3.3.5
tomcat-embed-core:10.1.31
tomcat-embed-el:10.1.31
tomcat-embed-websocket:10.1.31
You can check the same fix in netty, micrometer and quarkus:
https://github.com/netty/netty/issues/13595
https://github.com/micrometer-metrics/micrometer/issues/4316
https://github.com/quarkusio/quarkus/issues/35788
https://github.com/oracle/graal/issues/7105
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