Details
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Bug Report
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Resolution: Fixed
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L3 - Default
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7.17.0-alpha2, 7.17.0-alpha3
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None
Description
As requested by Niall Deehan I'm creating this issue.
Environment (Required on creation):
Spring Boot, Java 11, Camunda 7.17-0-alpha3
Description (Required on creation; please attach any relevant screenshots, stacktraces, log files, etc. to the ticket):
Calling "GET http://localhost:8080/engine-rest/telemetry/data" results in a null pointer exception on 7.17.0-alpha3
Steps to reproduce (Required on creation):
- Create a spring boot project with https://start.camunda.com/ using the defaults
- Download the zip, extract and change version in pom.xml from "7.16.0" to "7.17.0-alpha3"
- Start application
- Call GET http://localhost:8080/engine-rest/telemetry/data
Observed Behavior (Required on creation):
Response is
{"type":"NullPointerException","message":null}"
Log says:
2022-01-21 16:42:09.649 WARN 17945 --- [nio-8080-exec-1] org.camunda.bpm.engine.rest.exception : ENGINE-REST-HTTP500 java.lang.NullPointerException at org.camunda.bpm.engine.rest.dto.telemetry.LicenseKeyDataDto.fromEngineDto(LicenseKeyDataDto.java:98) at org.camunda.bpm.engine.rest.dto.telemetry.InternalsDto.fromEngineDto(InternalsDto.java:127) at org.camunda.bpm.engine.rest.dto.telemetry.ProductDto.fromEngineDto(ProductDto.java:72) at org.camunda.bpm.engine.rest.dto.telemetry.TelemetryDataDto.fromEngineDto(TelemetryDataDto.java:50) at org.camunda.bpm.engine.rest.impl.TelemetryRestServiceImpl.getTelemetryData(TelemetryRestServiceImpl.java:55) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory.lambda$static$0(ResourceMethodInvocationHandlerFactory.java:52) at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher$1.run(AbstractJavaResourceMethodDispatcher.java:124) at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:167) at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$TypeOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:219) at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:79) at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:475) at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:397) at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:81) at org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:255) at org.glassfish.jersey.internal.Errors$1.call(Errors.java:248) at org.glassfish.jersey.internal.Errors$1.call(Errors.java:244) at org.glassfish.jersey.internal.Errors.process(Errors.java:292) at org.glassfish.jersey.internal.Errors.process(Errors.java:274) at org.glassfish.jersey.internal.Errors.process(Errors.java:244) at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:265) at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:234) at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:680) at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:394) at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:346) at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:366) at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:319) at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:205) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.camunda.bpm.engine.rest.filter.CacheControlFilter.doFilter(CacheControlFilter.java:45) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.camunda.bpm.engine.rest.filter.EmptyBodyFilter.doFilter(EmptyBodyFilter.java:101) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:197) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:357) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:382) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:893) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1726) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191) at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.base/java.lang.Thread.run(Thread.java:834)
Expected behavior (Required on creation):
HTTP 200 with the telemetry data
Root Cause (Required on prioritization):
The current code doesn't perform a null-check when the Camunda license data is loaded. For this reason, an NPE is thrown when the CE version is used. The error doesn't occur when Camunda EE is used since a license is present there.
Solution Ideas (Optional):
A null-check is performed before Camunda license data is loaded.
Hints (optional):
I initially observed this error with alpha2 while integrating this into https://github.com/camunda-community-hub/micronaut-camunda-bpm but actually it can also be reproduced with the Spring Boot integration.
I haven't looked at it in detail. To me it looks as if the error is triggered because I'm using the Camunda community edition which does not have license data (I haven't tried the enterprise version yet). Probably a null check or something similar is missing in Camunda core.