syntax = "proto3";

package queryrangebase;

option go_package = "github.com/grafana/loki/pkg/querier/queryrange/queryrangebase";

import "github.com/gogo/protobuf/gogoproto/gogo.proto";
import "google/protobuf/duration.proto";
import "google/protobuf/any.proto";
import "pkg/logproto/logproto.proto";

option (gogoproto.marshaler_all) = true;
option (gogoproto.unmarshaler_all) = true;

message PrometheusRequestHeader {
  string Name = 1 [(gogoproto.jsontag) = "-"];
  repeated string Values = 2 [(gogoproto.jsontag) = "-"];
}
message PrometheusRequest {
  string path = 1;
  int64 start = 2;
  int64 end = 3;
  int64 step = 4;
  google.protobuf.Duration timeout = 5 [(gogoproto.stdduration) = true, (gogoproto.nullable) = false];
  string query = 6;
  CachingOptions cachingOptions = 7 [(gogoproto.nullable) = false];
  repeated PrometheusRequestHeader Headers = 8 [(gogoproto.jsontag) = "-"];
}

message PrometheusResponseHeader {
  string Name = 1 [(gogoproto.jsontag) = "-"];
  repeated string Values = 2 [(gogoproto.jsontag) = "-"];
}

message PrometheusResponse {
  string Status = 1 [(gogoproto.jsontag) = "status"];
  PrometheusData Data = 2 [(gogoproto.nullable) = false, (gogoproto.jsontag) = "data,omitempty"];
  string ErrorType = 3 [(gogoproto.jsontag) = "errorType,omitempty"];
  string Error = 4 [(gogoproto.jsontag) = "error,omitempty"];
  repeated PrometheusResponseHeader Headers = 5 [(gogoproto.jsontag) = "-"];
}

message PrometheusData {
  string ResultType = 1 [(gogoproto.jsontag) = "resultType"];
  repeated SampleStream Result = 2 [(gogoproto.nullable) = false, (gogoproto.jsontag) = "result"];
}

message SampleStream {
  repeated logproto.LegacyLabelPair labels = 1 [(gogoproto.nullable) = false, (gogoproto.jsontag) = "metric", (gogoproto.customtype) = "github.com/grafana/loki/pkg/logproto.LabelAdapter"];
  repeated logproto.LegacySample samples = 2 [(gogoproto.nullable) = false, (gogoproto.jsontag) = "values"];
}

message CachedResponse  {
	string key = 1 [(gogoproto.jsontag) = "key"];

	// List of cached responses; non-overlapping and in order.
	repeated Extent extents = 2 [(gogoproto.nullable) = false, (gogoproto.jsontag) = "extents"];
}

message Extent  {
	int64 start = 1 [(gogoproto.jsontag) = "start"];
  int64 end = 2 [(gogoproto.jsontag) = "end"];
  // reserved the previous key to ensure cache transition
  reserved 3;
  string trace_id = 4 [(gogoproto.jsontag) = "-"];
  google.protobuf.Any response = 5 [(gogoproto.jsontag) = "response"];
}

message CachingOptions {
  bool disabled = 1;
}