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/*
* Copyright (C) 2022,2023 Konsulko Group
*
* SPDX-License-Identifier: Apache-2.0
*/
#include "HvacService.h"
#include <string>
#include <sstream>
#include <iostream>
#include <algorithm>
HvacService::HvacService(const KuksaConfig &config, GMainLoop *loop) :
m_loop(loop),
m_config(config),
m_can_helper(),
m_led_helper()
{
// Create gRPC channel
std::string host = m_config.hostname();
host += ":";
std::stringstream ss;
ss << m_config.port();
host += ss.str();
std::shared_ptr<grpc::Channel> channel;
if (!m_config.caCert().empty()) {
grpc::SslCredentialsOptions options;
options.pem_root_certs = m_config.caCert();
if (!m_config.tlsServerName().empty()) {
grpc::ChannelArguments args;
auto target = m_config.tlsServerName();
std::cout << "Overriding TLS target name with " << target << std::endl;
args.SetString(GRPC_SSL_TARGET_NAME_OVERRIDE_ARG, target);
channel = grpc::CreateCustomChannel(host, grpc::SslCredentials(options), args);
} else {
channel = grpc::CreateChannel(host, grpc::SslCredentials(options));
}
} else {
channel = grpc::CreateChannel(host, grpc::InsecureChannelCredentials());
}
// Wait for the channel to be ready
std::cout << "Waiting for Databroker gRPC channel" << std::endl;
while (!channel->WaitForConnected(std::chrono::system_clock::now() +
std::chrono::milliseconds(500))) ;
std::cout << "Databroker gRPC channel ready" << std::endl;
m_broker = new KuksaClient(channel, m_config);
if (m_broker) {
// Listen to actuator target updates
std::map<std::string, bool> signals;
signals["Vehicle.Cabin.HVAC.Station.Row1.Left.Temperature"] = true;
signals["Vehicle.Cabin.HVAC.Station.Row1.Left.FanSpeed"] = true;
signals["Vehicle.Cabin.HVAC.Station.Row1.Right.Temperature"] = true;
signals["Vehicle.Cabin.HVAC.Station.Row1.Right.FanSpeed"] = true;
m_broker->subscribe(signals,
[this](const std::string &path, const Datapoint &dp) {
HandleSignalChange(path, dp);
},
[this](const SubscribeRequest *request, const Status &s) {
HandleSubscribeDone(request, s);
});
}
}
HvacService::~HvacService()
{
delete m_broker;
}
// Private
void HvacService::HandleSignalChange(const std::string &path, const Datapoint &dp)
{
if (m_config.verbose() > 1)
std::cout << "HvacService::HandleSignalChange: Value received for " << path << std::endl;
if (path == "Vehicle.Cabin.HVAC.Station.Row1.Left.Temperature") {
if (dp.has_int32()) {
int temp = dp.int32();
if (temp >= 0 && temp < 256)
set_left_temperature(temp);
}
} else if (path == "Vehicle.Cabin.HVAC.Station.Row1.Right.Temperature") {
if (dp.has_int32()) {
int temp = dp.int32();
if (temp >= 0 && temp < 256)
set_right_temperature(temp);
}
} else if (path == "Vehicle.Cabin.HVAC.Station.Row1.Left.FanSpeed") {
if (dp.has_uint32()) {
int speed = dp.uint32();
if (speed >= 0 && speed <= 100)
set_left_fan_speed(speed);
}
} else if (path == "Vehicle.Cabin.HVAC.Station.Row1.Right.FanSpeed") {
if (dp.has_uint32()) {
int speed = dp.uint32();
if (speed >= 0 && speed <= 100)
set_right_fan_speed(speed);
}
}
// else ignore
}
void HvacService::HandleSignalSetError(const std::string &path, const Error &error)
{
std::cerr << "Error setting " << path << ": " << error.code() << " - " << error.reason() << std::endl;
}
void HvacService::HandleSubscribeDone(const SubscribeRequest *request, const Status &status)
{
if (m_config.verbose())
std::cout << "Subscribe status = " << status.error_code() <<
" (" << status.error_message() << ")" << std::endl;
if (status.error_code() == grpc::CANCELLED) {
if (m_config.verbose())
std::cerr << "Subscribe canceled, assuming shutdown" << std::endl;
return;
}
// Queue up a resubcribe via the GLib event loop callback
struct resubscribe_data *data = new (struct resubscribe_data);
if (!data) {
std::cerr << "Could not create resubcribe_data" << std::endl;
exit(1);
}
data->self = this;
// Need to copy request since the one we have been handed is from the
// finished subscribe and will be going away.
data->request = new SubscribeRequest(*request);
if (!data->request) {
std::cerr << "Could not create resubscribe SubscribeRequest" << std::endl;
exit(1);
}
// NOTE: Waiting 100 milliseconds for now; it is possible that some
// randomization and/or back-off may need to be added if many
// subscribes are active, or switching to some other resubscribe
// scheme altogether (e.g. post subscribes to a thread that waits
// for the channel to become connected again).
g_timeout_add_full(G_PRIORITY_DEFAULT,
100,
resubscribe_cb,
data,
NULL);
}
void HvacService::Resubscribe(const SubscribeRequest *request)
{
if (!(m_broker && request))
return;
m_broker->subscribe(request,
[this](const std::string &path, const Datapoint &dp) {
HandleSignalChange(path, dp);
},
[this](const SubscribeRequest *request, const Status &s) {
HandleSubscribeDone(request, s);
});
}
// NOTE: The following should perhaps be scheduling work via the GLib
// main loop to avoid potentially blocking threads from the gRPC
// pool.
void HvacService::set_left_temperature(uint8_t temp)
{
m_can_helper.set_left_temperature(temp);
m_led_helper.set_left_temperature(temp);
// Push out new value
m_broker->set("Vehicle.Cabin.HVAC.Station.Row1.Left.Temperature",
(int) temp,
[this](const std::string &path, const Error &error) {
HandleSignalSetError(path, error);
});
}
void HvacService::set_right_temperature(uint8_t temp)
{
m_can_helper.set_right_temperature(temp);
m_led_helper.set_right_temperature(temp);
// Push out new value
m_broker->set("Vehicle.Cabin.HVAC.Station.Row1.Right.Temperature",
(int) temp,
[this](const std::string &path, const Error &error) {
HandleSignalSetError(path, error);
});
}
void HvacService::set_left_fan_speed(uint8_t speed)
{
set_fan_speed(speed);
// Push out new value
m_broker->set("Vehicle.Cabin.HVAC.Station.Row1.Left.FanSpeed",
speed,
[this](const std::string &path, const Error &error) {
HandleSignalSetError(path, error);
});
}
void HvacService::set_right_fan_speed(uint8_t speed)
{
set_fan_speed(speed);
// Push out new value
m_broker->set("Vehicle.Cabin.HVAC.Station.Row1.Right.FanSpeed",
speed,
[this](const std::string &path, const Error &error) {
HandleSignalSetError(path, error);
});
}
void HvacService::set_fan_speed(uint8_t speed)
{
m_can_helper.set_fan_speed(speed);
}
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