tRPC zipkin plugin

Configuration example:

plugins:
  tracing:
    zipkin:
      service_name: HelloTestService
      host_port:  120.0.0.1:8080
      reporter:
        type: http  # types: http kafka noop
        http:
          url: http://localhost:9411/api/v2/spans
      sampler:
        type: always  # types: never always modulo boundary counting

• The plugin contains a global tracer, and each service has a corresponding tracer.
• The above example is the configuration of the global tracer; The reporting endpoint corresponds to (service_name, host_port). If these two items are not configured, (server.server, global.local_ip) will be used by default.
• For the tracer of each service, its reporting endpoint uses the (Name, ip:port) configured by the service by default.

Copyright

The copyright notice pertaining to the Tencent code in this repo was previously in the name of “THL A29 Limited.” That entity has now been de-registered. You should treat all previously distributed copies of the code as if the copyright notice was in the name of “Tencent.”