OpenTracing Java Web Servlet Filter Instrumentation

This library provides instrumentation for Java Web Servlet applications.

Initialization

Tracing filter can be programmatically initialized:

   TracingFilter filter = new TracingFilter(tracer);
   servletContext.addFilter("tracingFilter", filter);

or added to web.xml, however it requires to register a tracer instance: GlobalTracer.register(tracer).

Accessing Server Span

Current server span context is accessible in HttpServletRequest attributes.

   SpanContext spanContext = (SpanContext)httpservletRequest.getAttribute(TracingFilter.SERVER_SPAN_CONTEXT);
   

Development

./mvnw clean install

Release

Follow instructions in RELEASE