hyperion.ng/libsrc/hyperion/MessageForwarder.cpp

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// STL includes
#include <stdexcept>
// project includes
#include <hyperion/MessageForwarder.h>
// hyperion includes
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#include <hyperion/Hyperion.h>
// utils includes
#include <utils/Logger.h>
// qt includes
#include <QTcpServer>
#include <QTcpSocket>
#include <flatbufserver/FlatBufferConnection.h>
MessageForwarder::MessageForwarder(Hyperion *hyperion)
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: QObject()
, _hyperion(hyperion)
, _log(Logger::getInstance("NETFORWARDER"))
, _muxer(_hyperion->getMuxerInstance())
, _forwarder_enabled(true)
, _priority(140)
{
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// get settings updates
connect(_hyperion, &Hyperion::settingsChanged, this, &MessageForwarder::handleSettingsUpdate);
// component changes
connect(_hyperion, &Hyperion::compStateChangeRequest, this, &MessageForwarder::handleCompStateChangeRequest);
// connect with Muxer visible priority changes
connect(_muxer, &PriorityMuxer::visiblePriorityChanged, this, &MessageForwarder::handlePriorityChanges);
// init
handleSettingsUpdate(settings::NETFORWARD, _hyperion->getSetting(settings::NETFORWARD));
}
MessageForwarder::~MessageForwarder()
{
while (!_forwardClients.isEmpty())
delete _forwardClients.takeFirst();
}
void MessageForwarder::handleSettingsUpdate(const settings::type &type, const QJsonDocument &config)
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{
if(type == settings::NETFORWARD)
{
// clear the current targets
_jsonSlaves.clear();
_flatSlaves.clear();
while (!_forwardClients.isEmpty())
delete _forwardClients.takeFirst();
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// build new one
const QJsonObject &obj = config.object();
if ( !obj["json"].isNull() )
{
const QJsonArray & addr = obj["json"].toArray();
for (const auto& entry : addr)
{
addJsonSlave(entry.toString());
}
}
if ( !obj["flat"].isNull() )
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{
const QJsonArray & addr = obj["flat"].toArray();
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for (const auto& entry : addr)
{
addFlatbufferSlave(entry.toString());
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}
}
if (!_jsonSlaves.isEmpty() && obj["enable"].toBool() && _forwarder_enabled)
{
InfoIf(obj["enable"].toBool(true), _log, "Forward now to json targets '%s'", QSTRING_CSTR(_jsonSlaves.join(", ")));
connect(_hyperion, &Hyperion::forwardJsonMessage, this, &MessageForwarder::forwardJsonMessage, Qt::UniqueConnection);
} else if (_jsonSlaves.isEmpty() || ! obj["enable"].toBool() || !_forwarder_enabled)
disconnect(_hyperion, &Hyperion::forwardJsonMessage, 0, 0);
if (!_flatSlaves.isEmpty() && obj["enable"].toBool() && _forwarder_enabled)
{
InfoIf(obj["enable"].toBool(true), _log, "Forward now to flatbuffer targets '%s'", QSTRING_CSTR(_flatSlaves.join(", ")));
}
else if ( _flatSlaves.isEmpty() || ! obj["enable"].toBool() || !_forwarder_enabled)
{
disconnect(_hyperion, &Hyperion::forwardSystemProtoMessage, 0, 0);
disconnect(_hyperion, &Hyperion::forwardV4lProtoMessage, 0, 0);
}
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// update comp state
_hyperion->setNewComponentState(hyperion::COMP_FORWARDER, obj["enable"].toBool(true));
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}
}
void MessageForwarder::handleCompStateChangeRequest(const hyperion::Components component, bool enable)
{
if (component == hyperion::COMP_FORWARDER && _forwarder_enabled != enable)
{
_forwarder_enabled = enable;
handleSettingsUpdate(settings::NETFORWARD, _hyperion->getSetting(settings::NETFORWARD));
Info(_log, "Forwarder change state to %s", (_forwarder_enabled ? "enabled" : "disabled"));
_hyperion->setNewComponentState(component, _forwarder_enabled);
}
}
void MessageForwarder::handlePriorityChanges(const quint8 &priority)
{
const QJsonObject obj = _hyperion->getSetting(settings::NETFORWARD).object();
if (priority != 0 && _forwarder_enabled && obj["enable"].toBool())
{
_flatSlaves.clear();
while (!_forwardClients.isEmpty())
delete _forwardClients.takeFirst();
hyperion::Components activeCompId = _hyperion->getPriorityInfo(priority).componentId;
if (activeCompId == hyperion::COMP_GRABBER || activeCompId == hyperion::COMP_V4L)
{
if ( !obj["flat"].isNull() )
{
const QJsonArray & addr = obj["flat"].toArray();
for (const auto& entry : addr)
{
addFlatbufferSlave(entry.toString());
}
}
switch(activeCompId)
{
case hyperion::COMP_GRABBER:
{
disconnect(_hyperion, &Hyperion::forwardV4lProtoMessage, 0, 0);
connect(_hyperion, &Hyperion::forwardSystemProtoMessage, this, &MessageForwarder::forwardFlatbufferMessage, Qt::UniqueConnection);
}
break;
case hyperion::COMP_V4L:
{
disconnect(_hyperion, &Hyperion::forwardSystemProtoMessage, 0, 0);
connect(_hyperion, &Hyperion::forwardV4lProtoMessage, this, &MessageForwarder::forwardFlatbufferMessage, Qt::UniqueConnection);
}
break;
default:
{
disconnect(_hyperion, &Hyperion::forwardSystemProtoMessage, 0, 0);
disconnect(_hyperion, &Hyperion::forwardV4lProtoMessage, 0, 0);
}
}
}
else
{
disconnect(_hyperion, &Hyperion::forwardSystemProtoMessage, 0, 0);
disconnect(_hyperion, &Hyperion::forwardV4lProtoMessage, 0, 0);
}
}
}
void MessageForwarder::addJsonSlave(QString slave)
{
QStringList parts = slave.split(":");
if (parts.size() != 2)
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{
Error(_log, "Unable to parse address (%s)",QSTRING_CSTR(slave));
return;
}
bool ok;
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parts[1].toUShort(&ok);
if (!ok)
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{
Error(_log, "Unable to parse port number (%s)",QSTRING_CSTR(parts[1]));
return;
}
// verify loop with jsonserver
const QJsonObject &obj = _hyperion->getSetting(settings::JSONSERVER).object();
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if(QHostAddress(parts[0]) == QHostAddress::LocalHost && parts[1].toInt() == obj["port"].toInt())
{
Error(_log, "Loop between JsonServer and Forwarder! (%s)",QSTRING_CSTR(slave));
return;
}
if (_forwarder_enabled)
_jsonSlaves << slave;
}
void MessageForwarder::addFlatbufferSlave(QString slave)
{
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QStringList parts = slave.split(":");
if (parts.size() != 2)
{
Error(_log, "Unable to parse address (%s)",QSTRING_CSTR(slave));
return;
}
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bool ok;
parts[1].toUShort(&ok);
if (!ok)
{
Error(_log, "Unable to parse port number (%s)",QSTRING_CSTR(parts[1]));
return;
}
// verify loop with flatbufserver
const QJsonObject &obj = _hyperion->getSetting(settings::FLATBUFSERVER).object();
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if(QHostAddress(parts[0]) == QHostAddress::LocalHost && parts[1].toInt() == obj["port"].toInt())
{
Error(_log, "Loop between Flatbuffer Server and Forwarder! (%s)",QSTRING_CSTR(slave));
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return;
}
if (_forwarder_enabled)
{
_flatSlaves << slave;
FlatBufferConnection* flatbuf = new FlatBufferConnection("Forwarder", slave.toLocal8Bit().constData(), _priority, false);
_forwardClients << flatbuf;
}
}
void MessageForwarder::forwardJsonMessage(const QJsonObject &message)
{
if (_forwarder_enabled)
{
QTcpSocket client;
for (int i=0; i<_jsonSlaves.size(); i++)
{
QStringList parts = _jsonSlaves.at(i).split(":");
client.connectToHost(QHostAddress(parts[0]), parts[1].toUShort());
if ( client.waitForConnected(500) )
{
sendJsonMessage(message,&client);
client.close();
}
}
}
}
void MessageForwarder::forwardFlatbufferMessage(const QString& name, const Image<ColorRgb> &image)
{
if (_forwarder_enabled)
{
for (int i=0; i < _forwardClients.size(); i++)
_forwardClients.at(i)->setImage(image);
}
}
void MessageForwarder::sendJsonMessage(const QJsonObject &message, QTcpSocket *socket)
{
// for hyperion classic compatibility
QJsonObject jsonMessage = message;
if (jsonMessage.contains("tan") && jsonMessage["tan"].isNull())
jsonMessage["tan"] = 100;
// serialize message
QJsonDocument writer(jsonMessage);
QByteArray serializedMessage = writer.toJson(QJsonDocument::Compact) + "\n";
// write message
socket->write(serializedMessage);
if (!socket->waitForBytesWritten())
{
Debug(_log, "Error while writing data to host");
return;
}
// read reply data
QByteArray serializedReply;
while (!serializedReply.contains('\n'))
{
// receive reply
if (!socket->waitForReadyRead())
{
Debug(_log, "Error while writing data from host");
return;
}
serializedReply += socket->readAll();
}
// parse reply data
QJsonParseError error;
QJsonDocument reply = QJsonDocument::fromJson(serializedReply ,&error);
if (error.error != QJsonParseError::NoError)
{
Error(_log, "Error while parsing reply: invalid json");
return;
}
}