// Copyright 2021-2023 H2020 TeraFlow (https://www.teraflow-h2020.eu/)
//
// 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 monitoring;

import "context.proto";
import "kpi_sample_types.proto";

service MonitoringService {
  rpc SetKpi                (KpiDescriptor      ) returns (KpiId               ) {} // Stable not final
  rpc DeleteKpi             (KpiId              ) returns (context.Empty       ) {} // Stable and final
  rpc GetKpiDescriptor      (KpiId              ) returns (KpiDescriptor       ) {} // Stable and final
  rpc GetKpiDescriptorList  (context.Empty      ) returns (KpiDescriptorList   ) {} // Stable and final
  rpc IncludeKpi            (Kpi                ) returns (context.Empty       ) {} // Stable and final
  rpc MonitorKpi            (MonitorKpiRequest  ) returns (context.Empty       ) {} // Stable and final
  rpc QueryKpiData          (KpiQuery           ) returns (KpiList             ) {} // Not implemented
  rpc SetKpiSubscription    (SubsDescriptor     ) returns (stream SubsResponse ) {} // Stable not final
  rpc GetSubsDescriptor     (SubscriptionID     ) returns (SubsDescriptor      ) {} // Stable and final
  rpc GetSubscriptions      (context.Empty      ) returns (SubsList            ) {} // Stable and final
  rpc DeleteSubscription    (SubscriptionID     ) returns (context.Empty       ) {} // Stable and final
  rpc SetKpiAlarm           (AlarmDescriptor    ) returns (AlarmID             ) {} // Stable not final
  rpc GetAlarms             (context.Empty      ) returns (AlarmList           ) {} // Stable and final
  rpc GetAlarmDescriptor    (AlarmID            ) returns (AlarmDescriptor     ) {} // Stable and final
  rpc GetAlarmResponseStream(AlarmSubscription  ) returns (stream AlarmResponse) {} // Not Stable not final
  rpc DeleteAlarm           (AlarmID            ) returns (context.Empty       ) {} // Stable and final
  rpc GetStreamKpi          (KpiId              ) returns (stream Kpi          ) {} // Stable not final
  rpc GetInstantKpi         (KpiId              ) returns (Kpi             ) {} // Stable not final
}

message KpiDescriptor {
  KpiId                          kpi_id          = 1;
  string                         kpi_description = 2;
  repeated KpiId                 kpi_id_list     = 3;
  kpi_sample_types.KpiSampleType kpi_sample_type = 4;
  context.DeviceId               device_id       = 5;
  context.EndPointId             endpoint_id     = 6;
  context.ServiceId              service_id      = 7;
  context.SliceId                slice_id        = 8;
}

message MonitorKpiRequest {
  KpiId kpi_id              = 1;
  float monitoring_window_s = 2;
  float sampling_rate_s     = 3;
  // Pending add field to reflect Available Device Protocols
}

message KpiQuery {
  KpiId    kpi_id              = 1;
  float             monitoring_window_s = 2;
  float             sampling_rate_s     = 3;
  uint32            last_n_samples      = 4;  // used when you want something like "get the last N many samples
  context.Timestamp start_timestamp     = 5;  // used when you want something like "get the samples since X date/time"
  context.Timestamp end_timestamp       = 6;  // used when you want something like "get the samples until X date/time"
  // Pending add field to reflect Available Device Protocols
}

message KpiId {
  context.Uuid kpi_id = 1;
}

message Kpi {
  KpiId             kpi_id    = 1;
  context.Timestamp timestamp = 2;
  KpiValue          kpi_value = 3;
}

message KpiValueRange {
  KpiValue  kpiMinValue     = 1;
  KpiValue  kpiMaxValue     = 2;
  bool      inRange         = 3;  // by default True
  bool      includeMinValue = 4;  // False is outside the interval
  bool      includeMaxValue = 5;  // False is outside the interval
}

message KpiValue {
  oneof value {
    int32  int32Val  = 1;
    uint32 uint32Val = 2;
    int64  int64Val  = 3;
    uint64 uint64Val = 4;
    float  floatVal  = 5;
    string stringVal = 6;
    bool   boolVal   = 7;
  }
}


message KpiList {
  repeated Kpi kpi = 1;
}

message KpiDescriptorList {
  repeated KpiDescriptor kpi_descriptor_list = 1;
}

message SubsDescriptor{
  SubscriptionID    subs_id             = 1;
  KpiId             kpi_id              = 2;
  float             sampling_duration_s = 3;
  float             sampling_interval_s = 4;
  context.Timestamp start_timestamp     = 5;  // used when you want something like "get the samples since X date/time"
  context.Timestamp end_timestamp       = 6;  // used when you want something like "get the samples until X date/time"
  // Pending add field to reflect Available Device Protocols
}

message SubscriptionID {
  context.Uuid subs_id = 1;
}

message SubsResponse {
  SubscriptionID   subs_id  = 1;
  KpiList          kpi_list = 2;
}

message SubsList {
  repeated SubsDescriptor subs_descriptor = 1;
}

message AlarmDescriptor {
  AlarmID                     alarm_id              = 1;
  string                      alarm_description     = 2;
  string                      name                  = 3;
  KpiId                       kpi_id                = 4;
  KpiValueRange               kpi_value_range       = 5;
  context.Timestamp           timestamp             = 6;
}

message AlarmID{
  context.Uuid alarm_id = 1;
}

message AlarmSubscription{
  AlarmID alarm_id                  = 1;
  float   subscription_timeout_s    = 2;
  float   subscription_frequency_ms = 3;
}

message AlarmResponse {
  AlarmID           alarm_id  = 1;
  string            text      = 2;
  KpiList           kpi_list  = 3;
}

message AlarmList {
    repeated AlarmDescriptor alarm_descriptor = 1;
}
