// Copyright 2022-2024 ETSI OSG/SDG TeraFlowSDN (TFS) (https://tfs.etsi.org/)
//
// 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 telemetry_frontend;

import "context.proto";
import "kpi_manager.proto";

service TelemetryFrontendService {
  rpc StartCollector   (Collector      ) returns (CollectorId  ) {}
  rpc StopCollector    (CollectorId    ) returns (context.Empty) {}
  rpc SelectCollectors (CollectorFilter) returns (CollectorList) {}
}

message CollectorId {
  context.Uuid collector_id = 1;
}

message Collector {
  CollectorId        collector_id = 1; // The Collector ID
  kpi_manager.KpiId  kpi_id       = 2; // The KPI Id to be associated to the collected samples
  float              duration_s   = 3; // Terminate data collection after duration[seconds]; duration==0 means indefinitely
  float              interval_s   = 4; // Interval between collected samples
  context.Timestamp  start_time   = 5; // Timestamp when Collector start execution
  context.Timestamp  end_time     = 6; // Timestamp when Collector stop execution
}

message CollectorFilter {
  // Collector that fulfill the filter are those that match ALL the following fields.
  // An empty list means: any value is accepted.
  // All fields empty means: list all Collectors
  repeated CollectorId       collector_id = 1;
  repeated kpi_manager.KpiId kpi_id       = 2;
}

message CollectorList {
  repeated Collector collector_list = 1;
}