syntax = "proto3";

package espressopb;

import "google/protobuf/timestamp.proto";

service Espresso {

rpc BoilerTemperature(TemperatureStreamRequest) returns (stream TemperatureStreamResponse);

rpc GetConfiguration (GetConfigurationRequest) returns (Configuration);

rpc SetConfiguration (Configuration) returns (Configuration);

}

message TemperatureSample {

float value = 1;

google.protobuf.Timestamp observed_at = 2;

}

message TemperatureHistory {

repeated TemperatureSample samples = 1;

}

message TemperatureStreamRequest {}

message TemperatureStreamResponse {

oneof data {

TemperatureHistory history = 1;

TemperatureSample sample = 2;

}

}

message GetConfigurationRequest {}

message Configuration {

float temperature = 1;

float p = 2;

float i = 3;

float d = 4;

google.protobuf.Timestamp set_at = 5;

}