// Copyright 2019, OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

syntax = "proto3";

package opentelemetry.proto.collector.trace.v1;

import "opentelemetry/proto/trace/v1/trace.proto";

option java_multiple_files = true;
option java_package = "io.opentelemetry.proto.collector.trace.v1";
option java_outer_classname = "TraceServiceProto";
option go_package = "github.com/open-telemetry/opentelemetry-proto/gen/go/collector/trace/v1";

// Service that can be used to push spans between one Application instrumented with
// OpenTelemetry and a collector, or between a collector and a central collector (in this
// case spans are sent/received to/from multiple Applications).
service TraceService {
  // For performance reasons, it is recommended to keep this RPC
  // alive for the entire life of the application.
  rpc Export(ExportTraceServiceRequest) returns (ExportTraceServiceResponse) {}
}

message ExportTraceServiceRequest {
  // An array of ResourceSpans.
  // For data coming from a single resource this array will typically contain one
  // element. Intermediary nodes (such as OpenTelemetry Collector) that receive
  // data from multiple origins typically batch the data before forwarding further and
  // in that case this array will contain multiple elements.
  repeated opentelemetry.proto.trace.v1.ResourceSpans resource_spans = 1;
}

message ExportTraceServiceResponse {
}
