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ServletContextTracingInstaller.java
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ServletContextTracingInstaller.java
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package io.smallrye.opentracing;
import io.opentracing.Tracer;
import io.opentracing.contrib.jaxrs2.server.SpanFinishingFilter;
import java.util.EnumSet;
import javax.enterprise.inject.spi.CDI;
import javax.servlet.DispatcherType;
import javax.servlet.FilterRegistration.Dynamic;
import javax.servlet.ServletContext;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
import javax.servlet.annotation.WebListener;
/**
* @author Pavol Loffay
*/
@WebListener
public class ServletContextTracingInstaller implements ServletContextListener {
@Override
public void contextInitialized(ServletContextEvent servletContextEvent) {
ServletContext servletContext = servletContextEvent.getServletContext();
servletContext.setInitParameter("resteasy.providers", SmallRyeTracingDynamicFeature.class.getName());
// Span finishing filter
Tracer tracer = CDI.current().select(Tracer.class).get();
Dynamic filterRegistration = servletContext
.addFilter("tracingFilter", new SpanFinishingFilter(tracer));
filterRegistration.setAsyncSupported(true);
filterRegistration.addMappingForUrlPatterns(EnumSet.allOf(DispatcherType.class),
true, "*");
}
@Override
public void contextDestroyed(ServletContextEvent servletContextEvent) {
}
}