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/*
// Copyright (c) 2018 Intel Corporation
//
// 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 "dbus/dbuswrite.hpp"
#include <iostream>
#include <memory>
#include <phosphor-logging/log.hpp>
#include <sdbusplus/bus.hpp>
#include <string>
#include <variant>
constexpr const char* pwmInterface = "xyz.openbmc_project.Control.FanPwm";
using namespace phosphor::logging;
std::unique_ptr<WriteInterface>
DbusWritePercent::createDbusWrite(const std::string& path, int64_t min,
int64_t max, DbusHelperInterface& helper)
{
auto tempBus = sdbusplus::bus::new_system();
std::string connectionName;
try
{
connectionName = helper.getService(tempBus, pwmInterface, path);
}
catch (const std::exception& e)
{
return nullptr;
}
return std::make_unique<DbusWritePercent>(path, min, max, connectionName);
}
void DbusWritePercent::write(double value)
{
double minimum = getMin();
double maximum = getMax();
double range = maximum - minimum;
double offset = range * value;
double ovalue = offset + minimum;
if (oldValue == static_cast<int64_t>(ovalue))
{
return;
}
auto writeBus = sdbusplus::bus::new_default();
auto mesg =
writeBus.new_method_call(connectionName.c_str(), path.c_str(),
"org.freedesktop.DBus.Properties", "Set");
mesg.append(pwmInterface, "Target", std::variant<uint64_t>(ovalue));
try
{
// TODO: if we don't use the reply, call_noreply()
auto resp = writeBus.call(mesg);
}
catch (const sdbusplus::exception::SdBusError& ex)
{
log<level::ERR>("Dbus Call Failure", entry("PATH=%s", path.c_str()),
entry("WHAT=%s", ex.what()));
}
oldValue = static_cast<int64_t>(ovalue);
return;
}
std::unique_ptr<WriteInterface>
DbusWrite::createDbusWrite(const std::string& path, int64_t min,
int64_t max, DbusHelperInterface& helper)
{
auto tempBus = sdbusplus::bus::new_system();
std::string connectionName;
try
{
connectionName = helper.getService(tempBus, pwmInterface, path);
}
catch (const std::exception& e)
{
return nullptr;
}
return std::make_unique<DbusWrite>(path, min, max, connectionName);
}
void DbusWrite::write(double value)
{
if (oldValue == static_cast<int64_t>(value))
{
return;
}
auto writeBus = sdbusplus::bus::new_default();
auto mesg =
writeBus.new_method_call(connectionName.c_str(), path.c_str(),
"org.freedesktop.DBus.Properties", "Set");
mesg.append(pwmInterface, "Target", std::variant<uint64_t>(value));
try
{
// TODO: consider call_noreplly
auto resp = writeBus.call(mesg);
}
catch (const sdbusplus::exception::SdBusError& ex)
{
log<level::ERR>("Dbus Call Failure", entry("PATH=%s", path.c_str()),
entry("WHAT=%s", ex.what()));
}
oldValue = static_cast<int64_t>(value);
return;
}
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