Tomcat, RestAPI, HttpBasicAuthentication

Camunda 7 Topics Discussion & Questions
1

I am running Tomcat and Rest-api. My goal is to build an Auth0 AuthenticationFilter.

When running the standard Http Basic Authentication filter out of the bo , the localhost.log reports an error:

java.lang.ClassNotFoundException: org.camunda.bpm.engine.rest.security.auth.ProcessEngineAuthenticationFilter

Is anyone else getting ClassNotFoundException for ProcessEngineAuthenticationFilter?

I am having this problem with both “mvn clean install” generating the distribution, and with the downloaded version.

camunda-bpm-tomcat-7.9.0-SNAPSHOT
camunda-bpm-tomcat-7.9.0-alpha2

web.xml modification:

<filter>
  <filter-name>camunda-auth</filter-name>
  <filter-class>
    org.camunda.bpm.engine.rest.security.auth.ProcessEngineAuthenticationFilter
  </filter-class>
  <init-param>
    <param-name>authentication-provider</param-name>
    <param-value>org.camunda.bpm.engine.rest.security.auth.impl.HttpBasicAuthenticationProvider</param-value>
  </init-param>
</filter>
<filter-mapping>
  <filter-name>camunda-auth</filter-name>
  <url-pattern>/*</url-pattern>
</filter-mapping>

The localhost.log reports:

20-Apr-2018 14:30:29.592 SEVERE [main] org.apache.catalina.core.StandardContext.filterStart Exception starting filter [camunda-auth]
 java.lang.ClassNotFoundException: org.camunda.bpm.engine.rest.security.auth.ProcessEngineAuthenticationFilter
	at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1275)
	at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1104)
	at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:540)
	at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:521)
	at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:150)
	at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:256)
	at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:104)
	at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4485)
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5125)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
	at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:740)
	at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:716)
	at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:703)
	at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1131)
	at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1865)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
	at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:112)
	at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:1043)
	at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:433)
	at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1575)
	at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:308)
	at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:123)
	at org.apache.catalina.util.LifecycleBase.setStateInternal(LifecycleBase.java:424)
	at org.apache.catalina.util.LifecycleBase.setState(LifecycleBase.java:367)
	at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:964)
	at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:839)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1425)
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1415)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
	at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134)
	at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:941)
	at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:258)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
	at org.apache.catalina.core.StandardService.startInternal(StandardService.java:422)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
	at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:770)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
	at org.apache.catalina.startup.Catalina.start(Catalina.java:682)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:353)
	at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:493)
2

OK, I figured this out and will document for the next person:

There are multiple web.xml files. The correct web.xml file to which to add the and in the snippet above is:

{camunda directory}/server/apache-tomcat-9.0.5/webapps/engine-rest/WEB-INF/web.xml

and NOT:

{camunda directory}/server/apache-tomcat-9.0.5/conf/web.xml

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