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    Graziano Felline
    @ogipogi
    :)
    I have problems to build a local SNAPSHOT jar
    Vladimir Dvorak
    @skybber
    OK, I'll prepare it
    Graziano Felline
    @ogipogi
    Thank you very much
    Vladimir Dvorak
    @skybber
    snapshot updated
    Graziano Felline
    @ogipogi
    ok, I'll test it
    Vladimir Dvorak
    @skybber
    btw, you need dcevm11 to build HA
    Graziano Felline
    @ogipogi
    Ahh, that was maybe the issue
    Vladimir Dvorak
    @skybber
    I'm using dcevm11 as system jdk now for a week
    Graziano Felline
    @ogipogi

    I tested it:

    • activemq is deployed
    • New exception during deployment of Camunda engine
    14:46:08,971 ERROR [org.jboss.msc.service.fail] (ServerService Thread Pool -- 69) MSC000001: Failed to start service jboss.deployment.unit."camunda-webapp-ee-jboss-7.11.11-ee.war".undertow-deployment: org.jboss.msc.service.StartException in service jboss.deployment.unit."camunda-webapp-ee-jboss-7.11.11-ee.war".undertow-deployment: java.lang.NoClassDefFoundError: io/undertow/server/handlers/resource/ResourceManager
        at org.wildfly.extension.undertow.deployment.UndertowDeploymentService$1.run(UndertowDeploymentService.java:81)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)
        at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1985)
        at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1487)
        at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1378)
        at java.lang.Thread.run(Thread.java:748)
        at org.jboss.threads.JBossThread.run(JBossThread.java:485)
    Caused by: java.lang.NoClassDefFoundError: io/undertow/server/handlers/resource/ResourceManager
        at java.lang.ClassLoader.findBootstrapClass(Native Method)
        at java.lang.ClassLoader.findBootstrapClassOrNull(ClassLoader.java:1009)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:408)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:406)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:352)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:352)
        at java.lang.ClassLoader.findSystemClass(ClassLoader.java:998)
        at org.jboss.modules.ConcurrentClassLoader.findSystemClassInternal(ConcurrentClassLoader.java:416)
        at org.jboss.modules.JDKSpecific.getSystemClass(JDKSpecific.java:180)
        at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:395)
        at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:116)
        at io.undertow.servlet.core.DeploymentManagerImpl.deploy(DeploymentManagerImpl.java)
        at org.wildfly.extension.undertow.deployment.UndertowDeploymentService.startContext(UndertowDeploymentService.java:96)
        at org.wildfly.extension.undertow.deployment.UndertowDeploymentService$1.run(UndertowDeploymentService.java:78)
        ... 8 more

    I need to investigate what happened

    Vladimir Dvorak
    @skybber
    You can try to disable UndertowPlugin
    Graziano Felline
    @ogipogi
    I'm testing now exactly that :)
    Vladimir Dvorak
    @skybber
    UndertowPlugin is for resource loading
    Graziano Felline
    @ogipogi
    It looks good, the exception disappear.
    Thank you very much Vladimir.
    I'll test now the hot swapping.
    Vladimir Dvorak
    @skybber
    OK, may be Undertow will be needed

    then something is wrong in UndertowTransformer - PrefixingResourceManager is extended from jboss ResourceManager, that is not found at

    at org.wildfly.extension.undertow.deployment.UndertowDeploymentService.startContext(UndertowDeploymentService.java:96)

    Graziano Felline
    @ogipogi
    Ok, i get additional Exception during deployment of EAR file, also i need to investigate.
    15:02:26,199 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-8) MSC000001: Failed to start service jboss.deployment.unit."app.ear".POST_MODULE: org.jboss.msc.service.StartException in service jboss.deployment.unit."app.ear".POST_MODULE: WFLYSRV0153: Failed to process phase POST_MODULE of deployment "app.ear"
        at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:151)
        at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1739)
        at org.jboss.msc.service.ServiceControllerImpl$StartTask.execute(ServiceControllerImpl.java:1701)
        at org.jboss.msc.service.ServiceControllerImpl$ControllerTask.run(ServiceControllerImpl.java:1559)
        at org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)
        at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1985)
        at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1487)
        at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1378)
        at java.lang.Thread.run(Thread.java:748)
    Caused by: java.lang.Error: java.lang.NullPointerException
        at org.jboss.as.weld.deployment.BeanDeploymentArchiveImpl.<init>(BeanDeploymentArchiveImpl.java:111)
        at org.jboss.as.weld.deployment.processors.BeanArchiveProcessor$ResourceRootHandler.createExplicitBeanDeploymentArchive(BeanArchiveProcessor.java:347)
        at org.jboss.as.weld.deployment.processors.BeanArchiveProcessor$ResourceRootHandler.processResourceRoot(BeanArchiveProcessor.java:304)
        at org.jboss.as.weld.deployment.processors.BeanArchiveProcessor$ResourceRootHandler.handleResourceRoot(BeanArchiveProcessor.java:237)
        at org.jboss.as.weld.deployment.processors.BeanArchiveProcessor$ResourceRootHandler.access$100(BeanArchiveProcessor.java:206)
        at org.jboss.as.weld.deployment.processors.BeanArchiveProcessor.deploy(BeanArchiveProcessor.java:113)
        at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:144)
        ... 8 more
    Caused by: java.lang.NullPointerException
        ... 15 more
    
    15:02:26,213 ERROR [org.jboss.as.controller.management-operation] (DeploymentScanner-threads - 1) WFLYCTL0013: Operation ("deploy") failed - address: ([("deployment" => "app.ear")]) - failure description: {"WFLYCTL0080: Failed services" => {"jboss.deployment.unit.\"app.ear\".POST_MODULE" => "WFLYSRV0153: Failed to process phase POST_MODULE of deployment \"app.ear\"
        Caused by: java.lang.Error: java.lang.NullPointerException
        Caused by: java.lang.NullPointerException"}}
    During deployment of submodules i get now several new HA Info message from JBossModules plugin, this looks good.
    HOTSWAP AGENT: 15:02:25.754 INFO (org.hotswap.agent.config.PluginRegistry) - Plugin 'org.hotswap.agent.plugin.jbossmodules.JBossModulesPlugin' initialized in ClassLoader 'ModuleClassLoader for Module "deployment.app.ear.my-module-a-impl.jar" from Service Module Loader'.
    Graziano Felline
    @ogipogi
    Ok, this errors during deploy of EAR file are related with the last fix ( bootstrap class loader). If i deactivate Undertow and JBossModules i get the same Exception...
    Vladimir Dvorak
    @skybber
    INFO messages are ok
    bootstrap fix seem ok for me
    have you rest of stack trace - pby there is part related to HA
    you can try to disable WeldPlugin too
    Graziano Felline
    @ogipogi
    ok, the exception disappear if i disable also the weld plugin
    But not in EAP
    Graziano Felline
    @ogipogi
    ok, thank you for the info
    Vladimir Dvorak
    @skybber
    not at all, hope it helps you
    Graziano Felline
    @ogipogi
    :thumbsup:
    Graziano Felline
    @ogipogi

    Ok, it looks lie the app i have is to large (large monolith).
    The deployment of ear hangs, if i have JBossModules plugin activated.
    It hangs on:

    17:40:09,444 INFO  [org.jboss.weld.deployer] (MSC service thread 1-1) WFLYWELD0003: Processing weld deployment app.ear

    jstack:

    at org.jboss.as.weld.deployment.processors.ExternalBeanArchiveProcessor.findExportedResource(ExternalBeanArchiveProcessor.java:330)
        at org.jboss.as.weld.deployment.processors.ExternalBeanArchiveProcessor.findExportedResources(ExternalBeanArchiveProcessor.java:313)

    With disabled JBossModules plugin deployment duration is ca. 8 min.

    Any hints how i can patch JBossModules plugin for test if swapping works to an explicit module (ejb jar)?

    Vladimir Dvorak
    @skybber
    look into ModuleClassLoaderTransformer
    if you are not attached by external debugger, then you also need autoHotswap=true
    There are generally 2 ways how the JVM can get new bytecode, 1. from debugger 2. from HA ussing autoHotswap
    Vladimir Dvorak
    @skybber
    Anyway for Wildfly, I would try to remove unused plugins directly from hotswap-agent.jar. It will avoid a lot of useless scanning especially on jboss eap, where are a lot of classloaders that slow things down.
    1 reply
    I would recommend to test it outside docker at first, if it works, then docker is next level
    Graziano Felline
    @ogipogi

    The reason for hanging (much slower deployment) is:

    • Setup has a lot of sub projects (large monolith)
    • I set hotswap-agent.properties in one of these sub projects src/main/resources folder withextraClasspath=[path_to_my_project]/build/classes/java/main
    • During deployment of other ejbs (other sub project) it checks now if on the extraClasspath it exists a META-INF/beans.xml or META-INF/jandex.idx file

    Stack (java.nio.file.Files.exists(Files.java:2385))

    java.lang.Thread.State: RUNNABLE
      at sun.nio.fs.UnixNativeDispatcher.access0(Native Method)
      at sun.nio.fs.UnixNativeDispatcher.access(UnixNativeDispatcher.java:449)
      at sun.nio.fs.UnixFileSystemProvider.checkAccess(UnixFileSystemProvider.java:306)
      at java.nio.file.Files.exists(Files.java:2385)
      at org.jboss.modules.PathResourceLoader.lambda$getResource$4(PathResourceLoader.java:155)
      at org.jboss.modules.PathResourceLoader$$Lambda$7/2033524545.run(Unknown Source)
      at org.jboss.modules.PathResourceLoader.doPrivilegedIfNeeded(PathResourceLoader.java:248)
      at org.jboss.modules.PathResourceLoader.getResource(PathResourceLoader.java:155)
      at org.jboss.modules.ModuleClassLoader.loadResourceLocal(ModuleClassLoader.java:410)
      at org.jboss.modules.ModuleClassLoader$1.loadResourceLocal(ModuleClassLoader.java:144)
      at org.jboss.modules.Module.getResources(Module.java:861)
      at org.jboss.modules.Module.getExportedResources(Module.java:904)
      at org.jboss.as.weld.deployment.processors.ExternalBeanArchiveProcessor.findExportedResource(ExternalBeanArchiveProcessor.java:330)
      at org.jboss.as.weld.deployment.processors.ExternalBeanArchiveProcessor.findExportedResources(ExternalBeanArchiveProcessor.java:313)

    Is this expected?
    Without hotswap-agent.properties file it doesn't hang anymore, but i have no chance to link to classes for swapping.

    Vladimir Dvorak
    @skybber
    I didn't see that
    Graziano Felline
    @ogipogi
    Hi Vladimir, which part don't you see?
    Vladimir Dvorak
    @skybber
    I did not see the problem yet
    its not clear what place of code calls the check procedure, it seems it is not related to HA
    Graziano Felline
    @ogipogi

    It look like the defined extraClasspath has here an impact.
    I need to understand this first - yes.
    https://github.com/wildfly/wildfly/blob/eacb144910142d456946ea2c429f63abf0cf8b93/weld/subsystem/src/main/java/org/jboss/as/weld/deployment/processors/ExternalBeanArchiveProcessor.java#L309

    Only to be sure - it is right, to place the hotswap-agent.propertiesfile in resources folder of subprojects?

    Vladimir Dvorak
    @skybber
    yes, it is right place for project or module specific HA configuration
    it looks you are interested in this problem :) HA is good starting point to understand underlaying technologies like Weld/JbossModules/Undertow
    My technology stack is little bit different. I'm using OWB/Deltaspike/Tomcat, although I did the Weld/Udertow/Jboss modules some years ago
    bute generally, I'm interested to CDI, JSF, CXF ...
    bosbeles
    @bosbeles
    Hello.
    I am new to this gitter stuff. HotswapProjects/HotswapAgent#372
    I have a
    bosbeles
    @bosbeles
    I want to make hotswap for a swing based application. The panel creation is generally on the constructor. I have used spring plugin and modified the example plugin. It is now half working. HotswapProjects/HotswapAgent#372 I have created an issue/question on github. Maybe this is the right place for that kind of question. Could you help me?
    Arjun Krishnamurthy
    @arjun.krishnamurthy_gitlab
    Hi Team
    We have a java application running in JDK 1.8.0_191 and we are using jboss 7.2 as the application server. we are using eclipse photon(4.8.0) with hotswap 1.3.0. We also have file synchronization setup for JSP changes. We are observing error "hotswap failed VM may be inconsistent"after few changes in java classes. changes are picked up in runtime but debugger thread goes out of sync and we are not able to debug the same class again. This behavior is inconsistent and doesn't have specific patterns. Could you please help on this issue?