cstancu / netty-native-demo Goto Github PK

@cstancu please cherry-pick 04850b9
onto your master. It contains fixes for your netty-native-demo maven project that should also be useful for the workflow you are describing.

• Most important, in line 20 I have added <scope>provided</scope> for the svm.jar dependency. This ensures that it is on the classpath only for building your project (with javac) but does not get transitively packed into the netty-svm-httpserver-full.jar.
• The official maven groupId for the svm.jar is com.oracle.substratevm. By using the official name you avoid conflicts if we finally have substratevm in maven central.
• By moving netty_reflection_config.json to src/main/resources/netty_reflection_config.json maven will automatically know this is a resource and package it into the jar file. This allows you to use -H:ReflectionConfigurationResources instead of -H:ReflectionConfigurationFiles which has the advantage of not being depended on where the resource file really is.

I managed to upgrade netty-all package to version 4.1.38.Final by modifying pom.xml:

@@ -11,7 +11,7 @@
     <dependency>
       <groupId>io.netty</groupId>
       <artifactId>netty-all</artifactId>
-      <version>4.1.24.Final</version>
+      <version>4.1.38.Final</version>
     </dependency>
     <dependency>
       <groupId>com.oracle.substratevm</groupId>

However, native-image with arguments mentioned by README.md could not generate execute along with the following error messages:

[netty-svm-http-server:47148]    classlist:   3,591.52 ms
[netty-svm-http-server:47148]        setup:   1,476.60 ms
Error: Already registered: io.netty.util.internal.CleanerJava6.CLEANER_FIELD_OFFSET
Error: Use -H:+ReportExceptionStackTraces to print stacktrace of underlying exception
Error: Image build request failed with exit status 1