syntax = 'proto3';

package NMonitoring.NProto;

option java_package = "ru.yandex.solomon.protos";
option java_multiple_files = true;
option cc_enable_arenas = true;

message TLabel {
    string Name = 1;
    string Value = 2;
}

enum EMetricType {
    UNKNOWN = 0;
    GAUGE = 1;
    IGAUGE = 2;
    COUNTER = 3;
    RATE = 4;
    HISTOGRAM = 5;
    HIST_RATE = 6;
    DSUMMARY = 7;
    LOGHISTOGRAM = 8;
}

message THistogram {
    repeated double Bounds = 1; // upper bounds of each bucket
    repeated uint64 Values = 2; // values stored in each bucket
}

message TLogHistogram {
    double Base = 1;
    uint64 ZerosCount = 2;
    int32 StartPower = 3;
    repeated double Buckets = 4;
}

message TSummaryDouble {
    double Sum = 1;
    double Min = 2;
    double Max = 3;
    double Last = 4;
    uint64 Count = 5;
}

// see TSingleSample
message TPoint {
    uint64 Time = 1;
    oneof Value {
        sfixed64 Int64 = 2;
        fixed64 Uint64 = 3;
        double Float64 = 4;
        THistogram Histogram = 5;
        TSummaryDouble SummaryDouble = 6;
        TLogHistogram LogHistogram = 7;
    }
}

message TSingleSample {
    repeated TLabel Labels = 1;
    EMetricType MetricType = 2;

    // inlined TPoint
    uint64 Time = 3;
    oneof Value {
        sfixed64 Int64 = 4;
        fixed64 Uint64 = 5;
        double Float64 = 6;
        THistogram Histogram = 7;
        TSummaryDouble SummaryDouble = 8;
        TLogHistogram LogHistogram = 9;
    }
}

message TMultiSample {
    repeated TLabel Labels = 1;
    EMetricType MetricType = 2;
    repeated TPoint Points = 3;
}

message TSingleSamplesList {
    uint64 CommonTime = 1;
    repeated TLabel CommonLabels = 2;
    repeated TSingleSample Samples = 3;
}

message TMultiSamplesList {
    uint64 CommonTime = 1;
    repeated TLabel CommonLabels = 2;
    repeated TMultiSample Samples = 3;
}