Better server span name for Spring MVC, Grails, Wicket and Struts - #2814
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The main change in this PR is adding a flag in
ServletSpanNamingto prevent controller instrumentation from setting the SERVER span name more than once.Otherwise, when the servlet request is forwarded to an error controller, the error controller is overwriting the SERVER span name that was set by the controller that handled the request.
This PR only applies this change to Spring MVC, Grails, Wicket and Struts instrumentation initially. Will follow up with issue or PR to apply this change to the remaining.