syntax = "proto3";

package envoy.extensions.tracers.dynamic_ot.v4alpha;

import "google/protobuf/struct.proto";

import "udpa/annotations/status.proto";
import "udpa/annotations/versioning.proto";
import "validate/validate.proto";

option java_package = "io.envoyproxy.envoy.extensions.tracers.dynamic_ot.v4alpha";
option java_outer_classname = "DynamicOtProto";
option java_multiple_files = true;
option (udpa.annotations.file_status).package_version_status = NEXT_MAJOR_VERSION_CANDIDATE;

// [#protodoc-title: Dynamically loadable OpenTracing tracer]

// DynamicOtConfig is used to dynamically load a tracer from a shared library
// that implements the `OpenTracing dynamic loading API
// <https://github.com/opentracing/opentracing-cpp>`_.
// [#extension: envoy.tracers.dynamic_ot]
message DynamicOtConfig {
  option (udpa.annotations.versioning).previous_message_type =
      "envoy.config.trace.v3.DynamicOtConfig";

  // Dynamic library implementing the `OpenTracing API
  // <https://github.com/opentracing/opentracing-cpp>`_.
  string library = 1 [(validate.rules).string = {min_len: 1}];

  // The configuration to use when creating a tracer from the given dynamic
  // library.
  google.protobuf.Struct config = 2;
}