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scripts.cpp
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scripts.cpp
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/*
SPDX-FileCopyrightText: 2023 Mikhail Morozov <2002morozik@gmail.com>
SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
*/
#include "scripts.h"
#include <qdebug.h>
#include <qdir.h>
#include <qglobal.h>
#include <qvariant.h>
K_PLUGIN_CLASS_WITH_JSON(ScriptsPlugin, "metadata.json")
ScriptsPlugin::ScriptsPlugin(QObject *parent, const QVariantList &args) : SensorPlugin(parent, args)
{
container = new KSysGuard::SensorContainer("scripts", i18nc("@title", "Scripts"), this);
// Create folder if it doesn't exist
QDir scriptDir(scriptDirPath);
if (!scriptDir.exists()) scriptDir.mkpath(".");
// Create scripts directory watcher, which will reload all scripts on change
scriptDirWatcher.addPath(scriptDirPath);
connect(&scriptDirWatcher, &QFileSystemWatcher::directoryChanged, this, &ScriptsPlugin::directoryChanged);
initScripts();
}
void ScriptsPlugin::initScripts()
{
auto scriptPathItr = QDirIterator(scriptDirPath, QDir::NoDotAndDotDot | QDir::Files | QDir::Executable, QDirIterator::Subdirectories);
QList<QString> addedScripts;
while (scriptPathItr.hasNext())
{
auto scriptAbsPath = scriptPathItr.next();
auto scriptRelPath = QDir(scriptDirPath).relativeFilePath(scriptAbsPath); // Create relative path for hierarchical view in system monitor
auto scriptName = QFileInfo(scriptAbsPath).fileName();
addedScripts.append(scriptRelPath);
if (!scripts.contains(scriptRelPath)) // If loading new
scripts.insert(scriptRelPath, new Script(scriptAbsPath, scriptRelPath, scriptName, container));
else // If reloading
scripts[scriptRelPath]->restart();
}
// Ignore deleted for now
//
// for (const auto& script : scripts.keys())
// if (!addedScripts.contains(script))
// {
// qDebug() << "Deleting" << script;
// delete scripts[script];
// scripts.remove(script);
// }
}
void ScriptsPlugin::deinitScripts()
{
qDeleteAll(scripts.begin(), scripts.end());
scripts.clear();
}
void ScriptsPlugin::update()
{
qDebug() << "Update called";
for (auto& script : qAsConst(scripts))
script->update();
}
void ScriptsPlugin::directoryChanged(const QString& path)
{
Q_UNUSED(path)
qDebug() << "Directory changed";
initScripts(); // Reload scripts
}
Script::Script(const QString &scriptAbsPath, const QString &scriptRelPath, const QString &scriptName, KSysGuard::SensorContainer *parent) : KSysGuard::SensorObject(scriptRelPath, scriptName, parent)
{
scriptPath = scriptAbsPath;
qDebug() << "Script:" << this->id() << "Path:" << scriptPath;
auto n = new KSysGuard::SensorProperty("name", i18nc("@title", "Name"), this->name(), this);
n->setVariantType(QVariant::String);
connect(&scriptProcess, &QProcess::readyReadStandardOutput, this, &Script::readyReadStandardOutput);
connect(&scriptProcess, &QProcess::stateChanged, this, &Script::stateChanged);
scriptProcess.start(scriptPath, {});
}
Script::~Script()
{
scriptProcess.close();
if (initSensorAct) initSensorsH.destroy();
if (updateSensorsAct) updateSensorsH.destroy();
}
void Script::restart()
{
scriptProcess.close();
if (initSensorAct) initSensorsH.destroy();
if (updateSensorsAct) updateSensorsH.destroy();
initSensorAct = false; updateSensorsAct = false;
scriptProcess.start(scriptPath, {});
}
void Script::stateChanged(QProcess::ProcessState newState)
{
qDebug() << "Script:" << this->id() << "State:" << newState;
if (newState == QProcess::ProcessState::Running)
initSensors(&initSensorsH);
}
void Script::readyReadStandardOutput()
{
scriptReply = scriptProcess.readAll().trimmed(); // Read all of script output and remove newline
qDebug() << "Script:" << this->id() << "Received: " << scriptReply;
if (initSensorAct) // If not initialized, continue init coroutine
initSensorsH();
else if (updateSensorsAct) // If initialized and update in progress, continue update coroutine
updateSensorsH();
}
Coroutine Script::initSensors(std::coroutine_handle<> *h)
{
initSensorAct = true;
Request r{h, this};
QMap<QString, QString> sensorParameters
{
{ "initial_value", "" },
{ "name", "" },
{ "short_name", "" },
{ "prefix", "" },
{ "description", "" },
{ "min", "" },
{ "max", "" },
{ "unit", "" },
{ "variant_type", "" },
{ "value", "" },
};
const QMap<QString, KSysGuard::Unit> Str2Unit
{
{ "-", KSysGuard::UnitNone },
{ "B", KSysGuard::UnitByte },
{ "B/s", KSysGuard::UnitByteRate },
{ "Hz", KSysGuard::UnitHertz },
{ "Timestamp", KSysGuard::UnitBootTimestamp },
{ "s", KSysGuard::UnitSecond },
{ "Time", KSysGuard::UnitTime },
{ "Ticks", KSysGuard::UnitTicks },
{ "C", KSysGuard::UnitCelsius },
{ "b/s", KSysGuard::UnitBitRate },
{ "dBm", KSysGuard::UnitDecibelMilliWatts },
{ "%", KSysGuard::UnitPercent },
{ "rate", KSysGuard::UnitRate },
{ "rpm", KSysGuard::UnitRpm },
{ "V", KSysGuard::UnitVolt },
{ "W", KSysGuard::UnitWatt },
{ "Wh", KSysGuard::UnitWattHour },
{ "A", KSysGuard::UnitAmpere },
};
auto sensorNames = (co_await *r.request("?")).split("\t");
qDebug() << sensorNames;
for (const auto& sensorName : qAsConst(sensorNames))
{
for (const auto& sensorParameter : sensorParameters.keys())
sensorParameters[sensorParameter] = co_await *r.request(sensorName, sensorParameter);
auto variant_type = QVariant::Type::String;
auto sensor = new KSysGuard::SensorProperty(
sensorName,
sensorParameters["name"] == "" ? sensorName : sensorParameters["name"],
QVariant(sensorParameters["initial_value"]),
this);
if (sensorParameters["short_name"] != "") sensor->setShortName(sensorParameters["short_name"]);
if (sensorParameters["prefix"] != "") sensor->setPrefix(sensorParameters["prefix"]);
if (sensorParameters["description"] != "") sensor->setDescription(sensorParameters["description"]);
if (sensorParameters["min"] != "") sensor->setMin(sensorParameters["min"].toDouble());
if (sensorParameters["max"] != "") sensor->setMax(sensorParameters["max"].toDouble());
if (sensorParameters["unit"] != "")
{
auto unit = KSysGuard::UnitInvalid;
if (Str2Unit.contains(sensorParameters["unit"]))
unit = Str2Unit[sensorParameters["unit"]];
sensor->setUnit(unit);
}
if (sensorParameters["variant_type"] != "")
{
variant_type = QVariant::nameToType(sensorParameters["variant_type"].toLocal8Bit().constData());
sensor->setVariantType(variant_type);
}
// Implicitly convert QVariant to variant_type, because ksystemsensor seems to ignore setVariantType
QVariant value(sensorParameters["value"]);
if (!value.convert(variant_type))
qCritical() << "Script:" << this->id() << "Sensor:" << sensor->id() << "Value:" << sensorParameters["value"] << "can't be converted to" << variant_type;
sensor->setValue(value);
sensors.append(sensor);
}
initSensorAct = false;
}
void Script::update()
{
if (!updateSensorsAct && !initSensorAct) // If not already running update
updateSensors(&updateSensorsH);
}
Coroutine Script::updateSensors(std::coroutine_handle<> *h)
{
updateSensorsAct = true;
Request r{h, this};
for (auto& sensor : qAsConst(sensors))
{
auto value_str = co_await *r.request(sensor->id(), "value");
QVariant value(value_str);
if (!value.convert(sensor->value().type()))
qCritical() << "Script:" << this->id() << "Sensor:" << sensor->id() << "Value:" << value_str << "can't be converted to" << sensor->value().type();
sensor->setValue(value); // If convert failed value is zero
}
updateSensorsAct = false;
}
Request* Request::request(QString request0, QString request1)
{
qDebug() << "Script:" << script->id() << "Requested:" << request0 + (request1 == "" ? QString("") : "\t" + request1);
script->scriptProcess.write((request0 + (request1 == "" ? QString("") : "\t" + request1) + "\n").toLocal8Bit());
return this;
}
QString Request::await_resume() noexcept
{
return script->scriptReply;
}
#include "scripts.moc"