Line data    Source code

       1             : #pragma once
       2             : 
       3             : #include "envoy/runtime/runtime.h"
       4             : #include "envoy/thread_local/thread_local.h"
       5             : #include "envoy/upstream/cluster_manager.h"
       6             : 
       7             : #include "source/extensions/tracers/common/ot/opentracing_driver_impl.h"
       8             : 
       9             : #include "opentracing/dynamic_load.h"
      10             : 
      11             : namespace Envoy {
      12             : namespace Extensions {
      13             : namespace Tracers {
      14             : namespace DynamicOt {
      15             : 
      16             : /**
      17             :  * This driver provides support for dynamically loading tracing libraries into Envoy that provide an
      18             :  * implementation of the OpenTracing API (see https://github.com/opentracing/opentracing-cpp).
      19             :  * TODO(rnburn): Add an example showing how to use a tracer library with this driver.
      20             :  */
      21             : class DynamicOpenTracingDriver : public Common::Ot::OpenTracingDriver {
      22             : public:
      23             :   DynamicOpenTracingDriver(Stats::Scope& scope, const std::string& library,
      24             :                            const std::string& tracer_config);
      25             : 
      26             :   static std::string formatErrorMessage(std::error_code error_code,
      27             :                                         const std::string& error_message);
      28             : 
      29             :   // Tracer::OpenTracingDriver
      30           0 :   opentracing::Tracer& tracer() override { return *tracer_; }
      31             : 
      32           0 :   PropagationMode propagationMode() const override {
      33           0 :     return OpenTracingDriver::PropagationMode::TracerNative;
      34           0 :   }
      35             : 
      36             : private:
      37             :   opentracing::DynamicTracingLibraryHandle library_handle_;
      38             :   std::shared_ptr<opentracing::Tracer> tracer_;
      39             : };
      40             : 
      41             : } // namespace DynamicOt
      42             : } // namespace Tracers
      43             : } // namespace Extensions
      44             : } // namespace Envoy