Is there already something working for exporting functionality of a Spring 
modules to other modules?

|-----Oorspronkelijk bericht-----
|Van: Jean-Baptiste Onofré <j...@nanthrax.net>
|Verzonden: woensdag 29 september 2021 17:26
|Aan: user@karaf.apache.org
|Onderwerp: Re: Karaf 5
|
|Thanks for the update.
|
|I'm happy to say you are the first one to "use/launch" Karaf 5 ;)
|
|About the TomcatURLStreamHandlerFactory is known "issue":
|
|https://github.com/jbonofre/karaf5/blob/main/services/spring-boot-
|application-
|manager/src/main/java/org/apache/karaf/springboot/SpringBootApplication
|ManagerService.java#L110
|
|I have to improve this ;)
|
|Regards
|JB
|
|On 29/09/2021 17:19, jgfrm wrote:
|> The following works:
|>
|> Karaf.json:
|> ====
|> {
|>    "applications": [
|>      {
|>        "name": "e3web",
|>        "url": "file:///home/jaap/Karaf5Test/e3web-dev.jar",
|>        "type": "spring-boot",
|>        "properties": {
|>          "enableHttp": true,
|>          "enablePrometheus": true
|>        }
|>      }
|>    ]
|> }
|> ====
|>
|> Add to Spring boot application:
|> ====
|> @SpringBootApplication
|> @ComponentScan
|> public class E3webApplication {
|>
|>   ...
|>      public static void main(String[] args) {
|>          TomcatURLStreamHandlerFactory.disable();  // see
|https://github.com/spring-projects/spring-boot/issues/21535
|>          SpringApplication.run(E3webApplication.class, args);
|>      }
|> ====
|>
|> Start with
|> java --add-modules jdk.security.jgss -cp
|> ../karaf5/assemblies/k4/target/k4-5.0-SNAPSHOT.jar:target/e3web-test-1
|> .0-SNAPSHOT.jar:../karaf5/services/spring-boot-application-manager/tar
|> get/spring-boot-application-manager-5.0-SNAPSHOT.jar
|> -Dkaraf.config=src/main/resources/karaf.json
|> org.apache.karaf.boot.Main
|>
|> |-----Oorspronkelijk bericht-----
|> |Van: JB Onofré <j...@nanthrax.net>
|> |Verzonden: dinsdag 28 september 2021 06:34
|> |Aan: user@karaf.apache.org
|> |Onderwerp: Re: Karaf 5
|> |
|> |Hi
|> |
|> |No it’s not this because k5 don’t use OSGi for the spring boot
|> |launcher. I still think it’s a missing add modules as Jvm arg. I will check
|today.
|> |
|> |Regards
|> |JB
|> |
|> |> Le 27 sept. 2021 à 23:39, jgfrm <f...@gordijn.org> a écrit :
|> |>
|> |> While Googling, I came across on of your blogs
|> |(http://nanthrax.blogspot.com/2021/04/whats-new-in-apache-karaf-
|> |431.html) that one of the changes in Karaf was to export the java.*
|packages.
|> |Could that be the cause?
|> |>
|> |> |-----Oorspronkelijk bericht-----
|> |> |Van: Jean-Baptiste Onofre <j...@nanthrax.net>
|> |> |Verzonden: zondag 26 september 2021 18:02
|> |> |Aan: user@karaf.apache.org
|> |> |Onderwerp: Re: Karaf 5
|> |> |
|> |> |Hi
|> |> |
|> |> |No sure, it’s only class loader issue. I remember this issue in
|> |> |pure spring boot with JDK11.
|> |> |
|> |> |Let me check.
|> |> |
|> |> |Regards
|> |> |JB
|> |> |
|> |> |> Le 26 sept. 2021 à 17:59, jgfrm <f...@gordijn.org> a écrit :
|> |> |>
|> |> |> Hi JB,
|> |> |>
|> |> |> Fully understand that it is still work in progress.
|> |> |>
|> |> |> Regarding the .NoClassDefFoundError: org/ietf/jgss/GSSException
|> |> |> --add-modules java.security.jgss does not solve it?
|> |> |> Is it a class loader problem?
|> |> |>
|> |> |> Best,
|> |> |>
|> |> |> -- Jaap
|> |> |>
|> |> |>
|> |> |> |-----Oorspronkelijk bericht-----
|> |> |> |Van: Jean-Baptiste Onofre <j...@nanthrax.net>
|> |> |> |Verzonden: zondag 26 september 2021 14:20
|> |> |> |Aan: user@karaf.apache.org
|> |> |> |Onderwerp: Re: Karaf 5
|> |> |> |
|> |> |> |Hi Jaap,
|> |> |> |
|> |> |> |First, maybe I was not clean in my presentation: Karaf 5 is
|> |> |> |still under development and so, everything is not yet ready.
|> |> |> |As said, I will “move” the code to Apache Karaf repo as soon as
|> |> |> |I consider I have something clean and running.
|> |> |> |
|> |> |> |Anyway, about your email, I will check. Today my focus is on
|> |> |> |the OsgiApplicationManager to be Karaf 4 compliant.
|> |> |> |I also have to improve the Karaf Config service.
|> |> |> |
|> |> |> |By the way, you don’t need your own Main, just use the
|> |> |> |repackage with regular provided Main (you can take a look on
|> |> |> |the K4 assembly repackage as an example). I will create a
|> |> |> |gradle/maven plugin with
|> |> |repackage.
|> |> |> |
|> |> |> |Regarding your issue, as you are running with JDK11, I guess
|> |> |> |you have to add -- add-modules java.security.jgss to avoid the
|> |> |NoClassDefFoundException.
|> |> |> |
|> |> |> |Thanks anyway for your feedback, much appreciated.
|> |> |> |
|> |> |> |Regards
|> |> |> |JB
|> |> |> |
|> |> |> |> Le 26 sept. 2021 à 12:00, jgfrm <f...@gordijn.org> a écrit :
|> |> |> |>
|> |> |> |> Hi Jean-Baptiste,
|> |> |> |>
|> |> |> |> I managed to start (well not completely) my spring application.
|> |> |> |> However, while starting up, I get an exception:
|> |> |> |>
|> |> |> |> 11:43:03.148 [main] ERROR o.s.boot.SpringApplication:837 -
|> |> |> |> Application run failed
|> |> |> |> org.springframework.context.ApplicationContextException:
|> |> |> |> Unable to start web server; nested exception is
|> |java.lang.NoClassDefFoundError:
|> |> |> |> org/ietf/jgss/GSSException
|> |> |> |>
|> |> |> |> Any ideas?
|> |> |> |>
|> |> |> |> Also, I had to make modifications in
|> |> |> |SpringBootApplicationManagerService/start:
|> |> |> |>
|> |> |> |> try {
|> |> |> |>            
Thread.currentThread().setContextClassLoader(classLoader);
|> |> |> |>            // disable tomcat stream handler
|> |> |> |>            /* There is no TomcatURLStreamHandlerFactory in my spring
|jar
|> |> |> |>            final Method tomcat =
|> |> |> |classLoader.loadClass("org.apache.catalina.webresources.TomcatU
|> |> |> |RLS tre am HandlerFactory").getMethod("disable");
|> |> |> |>            if (!tomcat.isBridge()) {
|> |> |> |>                tomcat.setAccessible(true);
|> |> |> |>            }
|> |> |> |>            tomcat.invoke(null, null);
|> |> |> |>             */
|> |> |> |>            // invoke spring boot main
|> |> |> |>            final Method main =
|> |> |>
||classLoader.loadClass("org.springframework.boot.loader.JarLauncher").
|> |> |> |getM
|> |> |> |ethod("main", String[].class);
|> |> |> |>            main.setAccessible(true);
|> |> |> |>            log.info("Call JarLauncher");
|> |> |> |>            if (properties.get("args") != null) {
|> |> |> |>                log.info("Call JarLauncher with args");
|> |> |> |>                main.invoke(null, new Object[]{ 
properties.get("args") });
|> |> |> |>            } else {
|> |> |> |>                log.info("Call JarLauncher without args");
|> |> |> |>                main.invoke(null, new Object[]{new
|> |> |> |> String[0]}); // the original invoke
|> |> |> |did not work for me
|> |> |> |>            }
|> |> |> |>        } finally {
|> |> |> |>            Thread.currentThread().setContextClassLoader(original);
|> |> |> |>        }
|> |> |> |>
|> |> |> |> Further details:
|> |> |> |> - openjdk version "11.0.12" 2021-07-20
|> |> |> |> - invocation:
|> |> |> |> java -cp
|> |> |> |> ../karaf5/assemblies/k4/target/k4-5.0-SNAPSHOT.jar:target/e3w
|> |> |> |> eb-
|> |> |> |> tes
|> |> |> |> t-1
|> |> |> |> .0-SNAPSHOT.jar:../karaf5/services/spring-boot-application-ma
|> |> |> |> nag er/ tar
|> |> |> |> get/spring-boot-application-manager-5.0-SNAPSHOT.jar
|> |> |> |> -Dkaraf.config=src/main/resources/karaf.json Main
|> |> |> |>
|> |> |> |> Main.java:
|> |> |> |> ###
|> |> |> |> public class Main {
|> |> |> |>    public static void main(String[] args){
|> |> |> |>        System.out.println("Starting Karaf");
|> |> |> |>        Karaf karaf = Karaf.builder().build();
|> |> |> |>        karaf.start();
|> |> |> |>    }
|> |> |> |> }
|> |> |> |> ###
|> |> |> |>
|> |> |> |> Best,
|> |> |> |>
|> |> |> |> -- Jaap
|> |> |> |>
|> |> |> |> |-----Oorspronkelijk bericht-----
|> |> |> |> |Van: Jean-Baptiste Onofré <j...@nanthrax.net>
|> |> |> |> |Verzonden: vrijdag 24 september 2021 10:34
|> |> |> |> |Aan: user@karaf.apache.org
|> |> |> |> |Onderwerp: Re: Karaf 5
|> |> |> |> |
|> |> |> |> |Hi Jaap,
|> |> |> |> |
|> |> |> |> |The presentation is available here:
|> |> |> |> |
|> |> |> |>
|> |> |>
|> |>
|>
|||||https://docs.google.com/presentation/d/1nDqd4oVbrggTDlwrzWc8zEdah
|K
|> |h
|> |> |c
|> |> |> |S
|> |> |> |> |VZJjlPk5FPxfBE/edit?usp=sharing
|> |> |> |> |
|> |> |> |> |Karaf 5 WIP is available here:
|> |> |> |> |
|> |> |> |> |https://github.com/jbonofre/karaf5
|> |> |> |> |
|> |> |> |> |I'm available on Slack or by email if you wanna chat about Karaf5.
|> |> |> |> |
|> |> |> |> |Regards
|> |> |> |> |JB
|> |> |> |> |
|> |> |> |> |On 24/09/2021 10:06, jgfrm wrote:
|> |> |> |> |> Hi,
|> |> |> |> |>
|> |> |> |> |> I have two questions about Karaf 5:
|> |> |> |> |> - is the presentation by Onofre at ApacheConf online
|somewhere?
|> |> |> |> |> - is it possible to explore Karaf 5 (or: what is there right 
now)?
|> |> |> |> |> I am in particular interested in the Spring Boot
|> |> |> |> |> functionality, as I have a Spring Boot application that I
|> |> |> |> |> want to port to Karaf to support dynamic loading of
|> |> |> |> |> components. I have found the github repo of Onofre, but it
|> |> |> |> |> is
|> |unclear to me how e.g. to start Karaf.
|> |> |> |> |>
|> |> |> |> |> Best,
|> |> |> |> |>
|> |> |> |> |> -- Jaap
|> |> |> |> |>
|> |> |> |>
|> |> |>
|> |> |>
|> |>
|> |>
|>
|>

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