OpenTracing instrumentation for Grizzly HTTP Server.
When using a runtime agent like java-agent or java-specialagent TCPNIOTransports will be automatically instrumented as long as their FilterChain contains an HttpServerFilter. This is the case with the plain HttpServer through its constructor or HttpServer.createSimpleServer static factory methods:
HttpServer httpServer = new HttpServer();
NetworkListener listener = new NetworkListener("grizzly", "localhost", "8080");
httpServer.addListener(listener);
httpServer.start();or
HttpServer httpServer = HttpServer.createSimpleServer();
httpServer.start();Alternatively, chains created directly will also be instrumented automatically under the same condition:
FilterChainBuilder filterChainBuilder = FilterChainBuilder.stateless();
filterChainBuilder.add(new TransportFilter());
filterChainBuilder.add(new HttpServerFilter());
filterChainBuilder.add(new SomeWorkerFilter());
TCPNIOTransport transport = TCPNIOTransportBuilder.newInstance().build();
transport.setProcessor(filterChainBuilder.build());
transport.bind("localhost", "8080");
transport.start();Refer to the agents' documentation for how to include this library as an instrumentation plugin.
When not using any of the OpenTracing Agents the traced filter chain instance must be instantiated directly. Use of the plain HttpServer without a runtime Agent is not currently supported.
FilterChainBuilder filterChainBuilder = new TracedFilterChainBuilder();
filterChainBuilder.add(new TransportFilter());
filterChainBuilder.add(new HttpServerFilter());
filterChainBuilder.add(new SomeWorkFilter());
...
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