hyperion.ng/libsrc/forwarder/MessageForwarder.cpp

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// STL includes
#include <stdexcept>
// project includes
#include <forwarder/MessageForwarder.h>
// hyperion includes
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#include <hyperion/Hyperion.h>
// utils includes
#include <utils/Logger.h>
#include <utils/NetUtils.h>
// qt includes
#include <QTcpServer>
#include <QTcpSocket>
#include <QHostInfo>
#include <QNetworkInterface>
#include <flatbufserver/FlatBufferConnection.h>
MessageForwarder::MessageForwarder(Hyperion* hyperion)
: _hyperion(hyperion)
, _log(nullptr)
, _muxer(_hyperion->getMuxerInstance())
, _forwarder_enabled(true)
, _priority(140)
{
QString subComponent = hyperion->property("instance").toString();
_log= Logger::getInstance("NETFORWARDER", subComponent);
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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(settings::type type, const QJsonDocument& config)
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{
if (type == settings::NETFORWARD)
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{
// clear the current targets
_jsonTargets.clear();
_flatbufferTargets.clear();
while (!_forwardClients.isEmpty())
{
delete _forwardClients.takeFirst();
}
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// build new one
const QJsonObject& obj = config.object();
if (!obj["json"].isNull())
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{
const QJsonArray& addr = obj["json"].toArray();
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for (const auto& entry : addr)
{
addJsonTarget(entry.toObject());
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}
}
if (!obj["flat"].isNull())
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{
const QJsonArray& addr = obj["flat"].toArray();
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for (const auto& entry : addr)
{
addFlatbufferTarget(entry.toObject());
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}
}
bool isForwarderEnabledinSettings = obj["enable"].toBool(false);
if (!_jsonTargets.isEmpty() && isForwarderEnabledinSettings && _forwarder_enabled)
{
for (const auto& targetHost : qAsConst(_jsonTargets))
{
InfoIf(isForwarderEnabledinSettings, _log, "Forwarding now to JSON-target host: %s port: %u", QSTRING_CSTR(targetHost.host.toString()), targetHost.port);
}
connect(_hyperion, &Hyperion::forwardJsonMessage, this, &MessageForwarder::forwardJsonMessage, Qt::UniqueConnection);
}
else if (_jsonTargets.isEmpty() || !isForwarderEnabledinSettings || !_forwarder_enabled)
{
disconnect(_hyperion, &Hyperion::forwardJsonMessage, nullptr, nullptr);
}
if (!_flatbufferTargets.isEmpty() && isForwarderEnabledinSettings && _forwarder_enabled)
{
for (const auto& targetHost : qAsConst(_flatbufferTargets))
{
InfoIf(isForwarderEnabledinSettings, _log, "Forwarding now to Flatbuffer-target host: %s port: %u", QSTRING_CSTR(targetHost.host.toString()), targetHost.port);
}
}
else if (_flatbufferTargets.isEmpty() || !isForwarderEnabledinSettings || !_forwarder_enabled)
{
disconnect(_hyperion, &Hyperion::forwardSystemProtoMessage, nullptr, nullptr);
disconnect(_hyperion, &Hyperion::forwardV4lProtoMessage, nullptr, nullptr);
}
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// update comp state
_hyperion->setNewComponentState(hyperion::COMP_FORWARDER, isForwarderEnabledinSettings);
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}
}
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void MessageForwarder::handleCompStateChangeRequest(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);
}
}
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void MessageForwarder::handlePriorityChanges(quint8 priority)
{
const QJsonObject obj = _hyperion->getSetting(settings::NETFORWARD).object();
if (priority != 0 && _forwarder_enabled && obj["enable"].toBool())
{
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)
{
addFlatbufferTarget(entry.toObject());
}
}
switch (activeCompId)
{
case hyperion::COMP_GRABBER:
{
disconnect(_hyperion, &Hyperion::forwardV4lProtoMessage, nullptr, nullptr);
connect(_hyperion, &Hyperion::forwardSystemProtoMessage, this, &MessageForwarder::forwardFlatbufferMessage, Qt::UniqueConnection);
}
break;
case hyperion::COMP_V4L:
{
disconnect(_hyperion, &Hyperion::forwardSystemProtoMessage, nullptr, nullptr);
connect(_hyperion, &Hyperion::forwardV4lProtoMessage, this, &MessageForwarder::forwardFlatbufferMessage, Qt::UniqueConnection);
}
break;
default:
{
disconnect(_hyperion, &Hyperion::forwardSystemProtoMessage, nullptr, nullptr);
disconnect(_hyperion, &Hyperion::forwardV4lProtoMessage, nullptr, nullptr);
}
}
}
else
{
disconnect(_hyperion, &Hyperion::forwardSystemProtoMessage, nullptr, nullptr);
disconnect(_hyperion, &Hyperion::forwardV4lProtoMessage, nullptr, nullptr);
}
}
}
void MessageForwarder::addJsonTarget(const QJsonObject& targetConfig)
{
TargetHost targetHost;
QString config_host = targetConfig["host"].toString();
if (NetUtils::resolveHostAddress(_log, config_host, targetHost.host))
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{
int config_port = targetConfig["port"].toInt();
if (NetUtils::isValidPort(_log, config_port, config_host))
{
targetHost.port = static_cast<quint16>(config_port);
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// verify loop with JSON-server
const QJsonObject& obj = _hyperion->getSetting(settings::JSONSERVER).object();
if ((QNetworkInterface::allAddresses().indexOf(targetHost.host) != -1) && targetHost.port == static_cast<quint16>(obj["port"].toInt()))
{
Error(_log, "Loop between JSON-Server and Forwarder! Configuration for host: %s, port: %d is ignored.", QSTRING_CSTR(config_host), config_port);
}
else
{
if (_forwarder_enabled)
{
if (_jsonTargets.indexOf(targetHost) == -1)
{
Info(_log, "JSON-Forwarder settings: Adding target host: %s port: %u", QSTRING_CSTR(targetHost.host.toString()), targetHost.port);
_jsonTargets << targetHost;
}
else
{
Warning(_log, "JSON Forwarder settings: Duplicate target host configuration! Configuration for host: %s, port: %d is ignored.", QSTRING_CSTR(targetHost.host.toString()), targetHost.port);
}
}
}
}
}
}
void MessageForwarder::addFlatbufferTarget(const QJsonObject& targetConfig)
{
TargetHost targetHost;
QString config_host = targetConfig["host"].toString();
if (NetUtils::resolveHostAddress(_log, config_host, targetHost.host))
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{
int config_port = targetConfig["port"].toInt();
if (NetUtils::isValidPort(_log, config_port, config_host))
{
targetHost.port = static_cast<quint16>(config_port);
// verify loop with Flatbuffer-server
const QJsonObject& obj = _hyperion->getSetting(settings::FLATBUFSERVER).object();
if ((QNetworkInterface::allAddresses().indexOf(targetHost.host) != -1) && targetHost.port == static_cast<quint16>(obj["port"].toInt()))
{
Error(_log, "Loop between Flatbuffer-Server and Forwarder! Configuration for host: %s, port: %d is ignored.", QSTRING_CSTR(config_host), config_port);
}
else
{
if (_forwarder_enabled)
{
if (_flatbufferTargets.indexOf(targetHost) == -1)
{
Info(_log, "Flatbuffer-Forwarder settings: Adding target host: %s port: %u", QSTRING_CSTR(targetHost.host.toString()), targetHost.port);
_flatbufferTargets << targetHost;
FlatBufferConnection* flatbuf = new FlatBufferConnection("Forwarder", targetHost.host.toString(), _priority, false, targetHost.port);
_forwardClients << flatbuf;
}
else
{
Warning(_log, "Flatbuffer Forwarder settings: Duplicate target host configuration! Configuration for host: %s, port: %d is ignored.", QSTRING_CSTR(targetHost.host.toString()), targetHost.port);
}
}
}
}
}
}
void MessageForwarder::forwardJsonMessage(const QJsonObject& message)
{
if (_forwarder_enabled)
{
QTcpSocket client;
for (const auto& targetHost : qAsConst(_jsonTargets))
{
client.connectToHost(targetHost.host, targetHost.port);
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::fromJson(serializedReply, &error);
if (error.error != QJsonParseError::NoError)
{
Error(_log, "Error while parsing reply: invalid json");
return;
}
}