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can anyone point me to a resource, how I can get spring-webflux and javamelody to work together? Seems, that a servletcontext is neccessary for startup, which I don't have/need.

I'm aware of the coll metrics stuff, that comes with spring-boot 2.x, but I don't have anything to display the metrics with, and am locked to a company environment, where just installing something isn't a valid option.

Thanks, Henning

Frischling
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1 Answers1

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javamelody is mainly based on monitoring of memory, cpu, http requests, sql requests and spring components among other things. See javamelody-spring-boot-starter for example.

But as far as I know, Spring webflux does not use the servlet api. So what do you want to monitor?

If you just want to have graphs in a browser, then start a http server for javamelody reports like in standalone. And if you also want to monitor sql requests and spring components, then add in your application all methods from this example, except monitoringSessionListener and monitoringFilter.

A new spring-boot-starter for javamelody in webflux could be created if it makes sense.

evernat
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  • I want to monitor incoming http requests, and outgoing http WebClient requests. Or maybe even just any metric that is exported by /acutator/metrics API, if that makes sense. – Frischling Jul 19 '18 at 13:24
  • In javamelody, the monitoring of http requests is currently based on the servlet api (see javamelody MonitoringFilter.java) and on RestTemplate. This may not be what you want, so you may create a pull request for what you want and use standalone mode instead of javamelody-spring-boot-starter. – evernat Jul 25 '18 at 22:50
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    @evernat Seems, that 'servlet api less' approach is a new path of evolution spring web module. It means that webflux will be increasingly popular year after year. According to this, do you have some plans for implement a new monitoring logic base on spring webflux? – kemenov Apr 21 '19 at 12:59