blob: cb3fd818534314798644631f768a2c06bf69febe [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 <iostream>
#include <libconfig.h++>
#include <string>
#include <unordered_map>
/* Configuration. */
#include "conf.hpp"
#include "sensors/builder.hpp"
#include "sensors/manager.hpp"
/*
* If there's a configuration file, we build from that, and it requires special
* parsing. I should just ditch the compile-time version to reduce the
* probability of sync bugs.
*/
SensorManager BuildSensorsFromConfig(const std::string& path)
{
using namespace libconfig;
std::map<std::string, struct sensor> config;
Config cfg;
std::cerr << "entered BuildSensorsFromConfig\n";
/* The load was modeled after the example source provided. */
try
{
cfg.readFile(path.c_str());
}
catch (const FileIOException& fioex)
{
std::cerr << "I/O error while reading file: " << fioex.what()
<< std::endl;
throw;
}
catch (const ParseException& pex)
{
std::cerr << "Parse error at " << pex.getFile() << ":" << pex.getLine()
<< " - " << pex.getError() << std::endl;
throw;
}
try
{
const Setting& root = cfg.getRoot();
/* Grab the list of sensors and create them all */
const Setting& sensors = root["sensors"];
int count = sensors.getLength();
for (int i = 0; i < count; ++i)
{
const Setting& sensor = sensors[i];
std::string name;
struct sensor thisOne;
/* Not a super fan of using this library for run-time configuration.
*/
name = sensor.lookup("name").c_str();
thisOne.type = sensor.lookup("type").c_str();
thisOne.readpath = sensor.lookup("readpath").c_str();
thisOne.writepath = sensor.lookup("writepath").c_str();
/* TODO: Document why this is wonky. The library probably doesn't
* like int64_t
*/
int min = sensor.lookup("min");
thisOne.min = static_cast<int64_t>(min);
int max = sensor.lookup("max");
thisOne.max = static_cast<int64_t>(max);
int timeout = sensor.lookup("timeout");
thisOne.timeout = static_cast<int64_t>(timeout);
// leaving for verification for now. and yea the above is
// necessary.
std::cerr << "min: " << min << " max: " << max
<< " savedmin: " << thisOne.min
<< " savedmax: " << thisOne.max
<< " timeout: " << thisOne.timeout << std::endl;
config[name] = thisOne;
}
}
catch (const SettingTypeException& setex)
{
std::cerr << "Setting '" << setex.getPath() << "' type exception!"
<< std::endl;
throw;
}
catch (const SettingNotFoundException& snex)
{
std::cerr << "Setting not found!" << std::endl;
throw;
}
return BuildSensors(config);
}