Initial commit

Lts/Proxies/TrainingAreaBase/Plugins/WlsTetra/wls_dispatcher.cpp

@@ -0,0 +1,122 @@
+/**
+  * Send / Receive telegrams to/from Wls
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  * Created by Christian Ehrlicher, SLSE, 2016-09-26
+  */
+
+#include "wls_dispatcher.h"
+#include "wls_handler_rx.h"
+#include "wls_handler_tx.h"
+
+#include <QSettings>
+#include <QWebSocket>
+#include <QTimer>
+#include <nglsettings/nglsettings_settings.h>
+
+namespace WlsTetra
+{
+WlsDispatcher::WlsDispatcher(TrainingAreaBase::Plugin::DataProvider *pdp,
+                             const std::shared_ptr<TrainingAreaBase::RecvFromTab> &recvFromTabCb,
+                             NGL::Settings *settings)
+  : m_recvFromTabCb(recvFromTabCb)
+  , m_recvFromWls(std::make_shared<WlsHandlerRx>(recvFromTabCb, this))
+  , m_sendToWls(std::make_shared<WlsHandlerTx>(pdp, this))
+  , m_settings(settings)
+  , m_webSocket(new QWebSocket(QString(), QWebSocketProtocol::VersionLatest, this))
+  , m_webSocketReconnectTimer(new QTimer(this))
+  , m_bWarnedOnce(false)
+  , m_logger(getLogger("WlsDispatcher"))
+{
+  connect(m_webSocket, QOverload<QAbstractSocket::SocketError>::of(&QWebSocket::error),
+          this, &WlsDispatcher::onWebSocketError);
+  connect(m_webSocket, &QWebSocket::connected,
+          this, &WlsDispatcher::onWlsConnected);
+  connect(m_webSocket, &QWebSocket::disconnected,
+          this, &WlsDispatcher::onWlsDisconnected);
+  connect(m_webSocket, &QWebSocket::textMessageReceived,
+          this, &WlsDispatcher::onTextMessageReceived);
+  connect(m_webSocketReconnectTimer, &QTimer::timeout,
+          this, &WlsDispatcher::init);
+  connect(m_recvFromWls.get(), &WlsHandlerRx::participantConnectionState,
+          m_sendToWls.get(), &WlsHandlerTx::onParticipantConnectionState);
+}
+
+bool WlsDispatcher::init()
+{
+  emit connectionState(QString::fromUtf8(name()), false);
+  const QUrl url(webSocketUrl());
+  if (!m_bWarnedOnce)
+    NOTICE_LOG(m_logger) << "Using WebSocket url: " << url.toString();
+  m_webSocket->open(url);
+  return true;
+}
+
+std::shared_ptr<TrainingAreaBase::SendToTab> WlsDispatcher::sendToTab()
+{
+  return std::static_pointer_cast<TrainingAreaBase::SendToTab>(m_sendToWls);
+}
+
+bool WlsDispatcher::canSendData() const
+{
+  return m_webSocket && m_webSocket->state() == QAbstractSocket::ConnectedState;
+}
+
+void WlsDispatcher::onWlsConnected()
+{
+  QWebSocket *ws = qobject_cast<QWebSocket *>(sender());
+  m_sendToWls->onWlsConnected(ws);
+  m_webSocketReconnectTimer->stop();
+  m_bWarnedOnce = false;
+}
+
+void WlsDispatcher::onWlsDisconnected()
+{
+  INFO_LOG(m_logger) << "Wls socket disconnected";
+  m_webSocketReconnectTimer->start(5000);
+  m_sendToWls->onWlsDisconnected();
+
+  emit connectionState(QString::fromUtf8(name()), false);
+}
+
+void WlsDispatcher::onWlsExternalConnectionStateChanged(bool bConnected)
+{
+  m_sendToWls->onWlsConnectedToExternalSystem(bConnected);
+  emit connectionState(QString::fromUtf8(name()), bConnected);
+}
+
+void WlsDispatcher::onWebSocketError()
+{
+  if (!m_webSocket)
+    return;
+  if (!m_bWarnedOnce)
+    WARNING_LOG(m_logger) << "Error connecting to " << webSocketUrl().toString() << ": " << m_webSocket->errorString();
+  m_webSocket->close();
+  m_webSocketReconnectTimer->start(5000);
+  m_bWarnedOnce = true;
+
+  emit connectionState(QString::fromUtf8(name()), false);
+}
+
+void WlsDispatcher::onTextMessageReceived(const QString &message)
+{
+  // convert from json to internal representation, send to TAB
+  m_recvFromWls->handleTelegram(message.toUtf8());
+}
+
+void WlsDispatcher::onParticipantLicenseChange(const TrainingAreaBase::TetraIcd::ParticipantLicenseChange &lc)
+{
+  INFO_LOG(m_logger) << "onParticipantLicenseChange id=" << lc.id()
+                      << " equipmentNumber=" << lc.equipmentNumber;
+  m_recvFromWls->participantLicenseChange(lc);
+}
+
+QUrl WlsDispatcher::webSocketUrl() const
+{
+  const quint16 port = m_settings->settings()->value(QStringLiteral("WLS/webSocketListenPort"), 12346).toInt();
+  const QString addr = m_settings->settings()->value(QStringLiteral("WLS/webSocketHostname"), QStringLiteral("localhost")).toString();
+  return QUrl(QStringLiteral("ws://%1:%2/").arg(addr).arg(port));
+}
+
+} // namespace WlsTetra