[CAMEL-10460] MetricsMessageHistoryFactory.java:138 Generate a NPE

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.18.0
• Fix Version/s: 2.18.1, 2.19.0
• Component/s: camel-metrics

Environment

MacOs, JDK 1.8, SpringBoot 1.4.1, Spring Metrics

• Estimated Complexity: Unknown
• Assignee: Claus Ibsen
• Reporter: Philippe Godot
• Created: 09/Nov/16 16:36
• Updated: 10/Nov/16 11:03
• Resolved: 10/Nov/16 09:33

Description

I'm trying to play with Spring-boot camel and metrics to expose dashboard.

Hawtio is a great tools to check what it's going on at runtime but no persistence is done. We would like to persist statistics in prometheus by example.

I configure camel context with MetricsMessageHistoryFactory as:

MetricsMessageHistoryFactory metricsMessageHistoryFactory = new MetricsMessageHistoryFactory();
metricsMessageHistoryFactory.setMetricsRegistry(metricRegistry);
camelContext.setMessageHistoryFactory(metricsMessageHistoryFactory);

where metricRegistry is injected with:
/**

• Srping Boot metrics
  */
  @Autowired
  private MetricRegistry metricRegistry;

Everything is ok until I passed in OnExceptionRoute. It seems that the routeId is set to Null in this case and generate a NPE (line MetricsMessageHistoryFactory:138) in the exception route. Route causing the NPE:

onException(NoAttachmentToProcessException.class)
.routeId(RouteIds.TECHNICAL_ERROR_HANDLING.routeId())
.log(LoggingLevel.ERROR,"TECHNICAL ERROR: ${exchangeProperty.CamelExceptionCaught}")