History plugin for Camunda 7.20.0

Camunda 7 Topics
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1

Hi everyone,

first of all I would say thank you to @datakurre for his great history plugin and @Bogdan_Artyushenko for creating an own JAVA dependency for the history plugin.

I created my own jar-dependency with the history plugin, some custom CSS settings and an other default language. Up to C7.19 it works fine.

Now I am trying to migrate my projects to 7.20 and Spring Boot 3.1.1 and when I start the final project (with a new generated camunda-plugin-dependency for C7.20), the start failed. The Tomcat could not be started.

2023-10-15T05:27:33.094+02:00  INFO 11108 --- [           main] o.s.b.a.h2.H2ConsoleAutoConfiguration    : H2 console available at '/h2-console'. Database available at 'jdbc:h2:./camunda-db'
2023-10-15T05:27:33.138+02:00 ERROR 11108 --- [           main] org.apache.catalina.core.ContainerBase   : A child container failed during start

java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Tomcat].StandardHost[localhost].TomcatEmbeddedContext[]]
	at java.base/java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[na:na]
	at java.base/java.util.concurrent.FutureTask.get(FutureTask.java:191) ~[na:na]
	at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:873) ~[tomcat-embed-core-10.1.10.jar:10.1.10]
	at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:846) ~[tomcat-embed-core-10.1.10.jar:10.1.10]
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-10.1.10.jar:10.1.10]
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1328) ~[tomcat-embed-core-10.1.10.jar:10.1.10]
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1318) ~[tomcat-embed-core-10.1.10.jar:10.1.10]
	at java.base/java.util.concurrent.FutureTask.run$$$capture(FutureTask.java:264) ~[na:na]
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java) ~[na:na]
	at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[tomcat-embed-core-10.1.10.jar:10.1.10]
	at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:145) ~[na:na]
	at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:866) ~[tomcat-embed-core-10.1.10.jar:10.1.10]
	at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:241) ~[tomcat-embed-core-10.1.10.jar:10.1.10]
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-10.1.10.jar:10.1.10]
	at org.apache.catalina.core.StandardService.startInternal(StandardService.java:428) ~[tomcat-embed-core-10.1.10.jar:10.1.10]
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-10.1.10.jar:10.1.10]
	at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:919) ~[tomcat-embed-core-10.1.10.jar:10.1.10]
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-10.1.10.jar:10.1.10]
	at org.apache.catalina.startup.Tomcat.start(Tomcat.java:485) ~[tomcat-embed-core-10.1.10.jar:10.1.10]
	at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.initialize(TomcatWebServer.java:123) ~[spring-boot-3.1.1.jar:3.1.1]
	at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.<init>(TomcatWebServer.java:104) ~[spring-boot-3.1.1.jar:3.1.1]
	at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getTomcatWebServer(TomcatServletWebServerFactory.java:489) ~[spring-boot-3.1.1.jar:3.1.1]
	at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getWebServer(TomcatServletWebServerFactory.java:211) ~[spring-boot-3.1.1.jar:3.1.1]
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.createWebServer(ServletWebServerApplicationContext.java:183) ~[spring-boot-3.1.1.jar:3.1.1]
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:161) ~[spring-boot-3.1.1.jar:3.1.1]
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:602) ~[spring-context-6.0.10.jar:6.0.10]
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:146) ~[spring-boot-3.1.1.jar:3.1.1]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:734) ~[spring-boot-3.1.1.jar:3.1.1]
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:436) ~[spring-boot-3.1.1.jar:3.1.1]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:312) ~[spring-boot-3.1.1.jar:3.1.1]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1306) ~[spring-boot-3.1.1.jar:3.1.1]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1295) ~[spring-boot-3.1.1.jar:3.1.1]
	at de.my.apps.lftst.MyCamundaApplication.main(MyCamundaApplication.java:24) ~[classes/:na]
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Tomcat].StandardHost[localhost].TomcatEmbeddedContext[]]
	at org.apache.catalina.util.LifecycleBase.handleSubClassException(LifecycleBase.java:440) ~[tomcat-embed-core-10.1.10.jar:10.1.10]
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:198) ~[tomcat-embed-core-10.1.10.jar:10.1.10]
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1328) ~[tomcat-embed-core-10.1.10.jar:10.1.10]
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1318) ~[tomcat-embed-core-10.1.10.jar:10.1.10]
	at java.base/java.util.concurrent.FutureTask.run$$$capture(FutureTask.java:264) ~[na:na]
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java) ~[na:na]
	at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[tomcat-embed-core-10.1.10.jar:10.1.10]
	at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:145) ~[na:na]
	at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:866) ~[tomcat-embed-core-10.1.10.jar:10.1.10]
	... 30 common frames omitted
Caused by: java.lang.NoClassDefFoundError: javax/servlet/ServletContextListener
	at java.base/java.lang.ClassLoader.defineClass1(Native Method) ~[na:na]
	at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1012) ~[na:na]
	at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:150) ~[na:na]
	at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:862) ~[na:na]
	at java.base/jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(BuiltinClassLoader.java:760) ~[na:na]
	at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:681) ~[na:na]
	at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:639) ~[na:na]
	at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188) ~[na:na]
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:520) ~[na:na]
	at org.camunda.bpm.spring.boot.starter.webapp.CamundaBpmWebappInitializer.onStartup(CamundaBpmWebappInitializer.java:84) ~[camunda-bpm-spring-boot-starter-webapp-core-7.20.0.jar:7.20.0]
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.selfInitialize(ServletWebServerApplicationContext.java:236) ~[spring-boot-3.1.1.jar:3.1.1]
	at org.springframework.boot.web.embedded.tomcat.TomcatStarter.onStartup(TomcatStarter.java:52) ~[spring-boot-3.1.1.jar:3.1.1]
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:4882) ~[tomcat-embed-core-10.1.10.jar:10.1.10]
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-10.1.10.jar:10.1.10]
	... 37 common frames omitted
Caused by: java.lang.ClassNotFoundException: javax.servlet.ServletContextListener
	at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641) ~[na:na]
	at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188) ~[na:na]
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:520) ~[na:na]
	... 51 common frames omitted

2023-10-15T05:27:33.141+02:00 ERROR 11108 --- [           main] org.apache.catalina.core.ContainerBase   : A child container failed during start

My plugin is listed in the pom.xml before the Camunda WebApp dependency.

    <dependency>
      <groupId>de.my.apps.camunda</groupId>
      <artifactId>my-apps-camunda-plugin</artifactId>
      <version>7.20.0_v1.0</version>
    </dependency>
    <dependency>
      <groupId>org.camunda.bpm.springboot</groupId>
      <artifactId>camunda-bpm-spring-boot-starter-webapp</artifactId>
      <exclusions>
        <exclusion>
          <groupId>org.camunda.bpm.webapp</groupId>
          <artifactId>camunda-webapp-webjar</artifactId>
        </exclusion>
        <exclusion>
          <groupId>org.camunda.bpm.webapp</groupId>
          <artifactId>camunda-webapp-webjar-ee</artifactId>
        </exclusion>
      </exclusions>
    </dependency>

Does anyone got the camunda history plugin running with C 7.20?

Thank you very much in advance.

Best regards,

Rainer

2

I found out that storeing the plugin files (js, css ect.) directly in my application resource folder (for example \src\main\resources\META-INF\resources\webjars\camunda\app\cockpit\scripts) the plugin still works.

So the problem must be in storing the files in an external dependency. :frowning:

I know this has nothing to do with C7, but maybe someone can help me.

Best regards,
Rainer

3

We changed our project structure and now it works again. Topic can be closed.

1 Like
4

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