blob: da9b387b4d42dd5f63fc3cc319d66067cb128656 [file] [log] [blame]
/**
* Copyright 2017 Google Inc.
*
* 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.
*/
#include <chrono>
#include <cmath>
#include <memory>
#include <mutex>
#include <sdbusplus/bus.hpp>
#include <string>
#include "dbuspassive.hpp"
#include "dbus/util.hpp"
std::unique_ptr<ReadInterface> DbusPassive::CreateDbusPassive(
sdbusplus::bus::bus& bus, const std::string& type,
const std::string& id, DbusHelperInterface *helper)
{
if (helper == nullptr)
{
return nullptr;
}
if (!ValidType(type))
{
return nullptr;
}
return std::make_unique<DbusPassive>(bus, type, id, helper);
}
DbusPassive::DbusPassive(
sdbusplus::bus::bus& bus,
const std::string& type,
const std::string& id,
DbusHelperInterface *helper)
: ReadInterface(),
_bus(bus),
_signal(bus, GetMatch(type, id).c_str(), DbusHandleSignal, this),
_id(id),
_helper(helper)
{
/* Need to get the scale and initial value */
auto tempBus = sdbusplus::bus::new_default();
/* service == busname */
std::string path = GetSensorPath(type, id);
std::string service = _helper->GetService(tempBus, sensorintf, path);
struct SensorProperties settings;
_helper->GetProperties(tempBus, service, path, &settings);
_scale = settings.scale;
_value = settings.value * pow(10, _scale);
_updated = std::chrono::high_resolution_clock::now();
}
ReadReturn DbusPassive::read(void)
{
std::lock_guard<std::mutex> guard(_lock);
struct ReadReturn r = {
_value,
_updated
};
return r;
}
void DbusPassive::setValue(double value)
{
std::lock_guard<std::mutex> guard(_lock);
_value = value;
_updated = std::chrono::high_resolution_clock::now();
}
int64_t DbusPassive::getScale(void)
{
return _scale;
}
std::string DbusPassive::getId(void)
{
return _id;
}
int HandleSensorValue(sdbusplus::message::message& msg, DbusPassive* owner)
{
std::string msgSensor;
std::map<std::string, sdbusplus::message::variant<int64_t, double>> msgData;
msg.read(msgSensor, msgData);
if (msgSensor == "xyz.openbmc_project.Sensor.Value")
{
auto valPropMap = msgData.find("Value");
if (valPropMap != msgData.end())
{
double value = mapbox::util::apply_visitor(VariantToDoubleVisitor(),
valPropMap->second);
value *= std::pow(10, owner->getScale());
owner->setValue(value);
}
}
return 0;
}
int DbusHandleSignal(sd_bus_message* msg, void* usrData, sd_bus_error* err)
{
auto sdbpMsg = sdbusplus::message::message(msg);
DbusPassive* obj = static_cast<DbusPassive*>(usrData);
return HandleSensorValue(sdbpMsg, obj);
}