[Interest] Question about using QtDBus
Rogers Nate
nate.rogers at raymondcorp.com
Tue Sep 2 22:05:04 CEST 2014
On 09/02/2014 03:00 PM, Thiago Macieira wrote:
On Tuesday 02 September 2014 18:53:59 Rogers Nate wrote:
That option doesn't seem to be available to me, or am I not calling it
correctly? I tried a few different ways...
nrogers at nrogers-Precision-T1500:/media/nrogers/data/dev/projects/dbustest/Da
taProcess$ qdbuscpp2xml -A -i ServiceData.h -o ServiceData.xml
unknown option: "-i"
nrogers at nrogers-Precision-T1500:/media/nrogers/data/dev/projects/dbustest/Da
taProcess$ qdbuscpp2xml -A ServiceData.h -o ServiceData.xml -i
unknown option: "-i"
nrogers at nrogers-Precision-T1500:/media/nrogers/data/dev/projects/dbustest/Da
taProcess$ qdbuscpp2xml -i ServiceData.h -o ServiceData.xml
unknown option: "-i"
nrogers at nrogers-Precision-T1500:/media/nrogers/data/dev/projects/dbustest/Da
taProcess$ qdbuscpp2xml -V
qdbuscpp2xml version 0.1
D-Bus QObject-to-XML converter
Pass it to qdbusxml2cpp, not to qdbuscpp2xml.
qdbuscpp2xml can't deal with non-Qt types since it doesn't know what the type
will expand to.
I used qdbuscpp2xml to generate new adapter and interface files but I am still getting the same error...
QDBusError("org.freedesktop.DBus.Error.InvalidSignature", "Unexpected reply signature: got "", expected "a(ss)"")
I included all my updated example code below. I wonder if it is compiling and linking with the new adapter and interface files or if it is still using the ones it is auto generating? When I tried to add the new adapter and interface files to my project it gave complier warnings about duplicate definitions. Do I have to somehow disable the auto generation of adapter and interface files so I can add the ones I manually created using qdbuscpp2xml?
Data Process...
------------------------- Begin main.cpp -------------------------
#include <qt5/QtCore/QCoreApplication>
#include <qt5/QtDBus/QtDBus>
#include "ServiceData.h"
#include "ServiceErrorLogData.h"
int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);
ServiceErrorLogData::registerMetaType();
ServiceData *serviceData = new ServiceData();
Q_UNUSED(serviceData);
return a.exec();
}
------------------------- End main.cpp -------------------------
------------------------ Begin ServiceData.cpp ---------------------
#include "ServiceData.h"
ServiceData::ServiceData(QObject *parent) : QObject(parent)
{
initVariables();
new ServiceDataAdaptor(this);
QDBusConnection connection = QDBusConnection::systemBus();
connection.registerObject("/ServiceData", this);
connection.registerService("com.GDM.ServiceData");
}
void ServiceData::initVariables()
{
ServiceErrorLogData tempData = ServiceErrorLogData("2/17 11:14:40a", "64 95%");
m_ServiceErrorLog.append(tempData);
ServiceErrorLogData tempData2 = ServiceErrorLogData("2/5 8:20:18a", "8L 53%");
m_ServiceErrorLog.append(tempData2);
}
QList<ServiceErrorLogData> ServiceData::serviceErrorLog()
{
return m_ServiceErrorLog;
}
-------------------------- End ServiceData.cpp ----------------------
------------------------ Begin ServiceData.h ------------------------
#ifndef SERVICEDATA_H
#define SERVICEDATA_H
#include <qt5/QtCore/QCoreApplication>
#include <qt5/QtDBus/QtDBus>
#include "ServiceErrorLogData.h"
#include "ServiceDataAdaptor.h"
class ServiceErrorLogData;
class ServiceData : public QObject
{
Q_OBJECT
Q_CLASSINFO("D-Bus Interface", "com.GDM.ServiceData")
public:
explicit ServiceData(QObject *parent = 0);
public slots:
QList<ServiceErrorLogData> serviceErrorLog();
private:
void initVariables();
QList<ServiceErrorLogData> m_ServiceErrorLog;
};
Q_DECLARE_METATYPE(QList<ServiceErrorLogData>)
#endif // SERVICEDATA_H
------------------------- End ServiceData.h -------------------------
------------------- Begin ServiceErrorLogData.cpp -------------------
#include "ServiceErrorLogData.h"
ServiceErrorLogData::ServiceErrorLogData() :
m_Label(),
m_Value()
{
}
ServiceErrorLogData::ServiceErrorLogData(const QString &label, const QString &value) :
m_Label(label),
m_Value(value)
{
}
ServiceErrorLogData::ServiceErrorLogData(const ServiceErrorLogData &other) :
m_Label(other.m_Label),
m_Value(other.m_Value)
{
}
ServiceErrorLogData& ServiceErrorLogData::operator=(const ServiceErrorLogData &other)
{
m_Label = other.m_Label;
m_Value = other.m_Value;
return *this;
}
ServiceErrorLogData::~ServiceErrorLogData()
{
}
QString ServiceErrorLogData::label() const
{
return m_Label;
}
QString ServiceErrorLogData::value() const
{
return m_Value;
}
void ServiceErrorLogData::registerMetaType()
{
qRegisterMetaType<ServiceErrorLogData>("ServiceErrorLogData");
qRegisterMetaType<QList<ServiceErrorLogData> >("QList<ServiceErrorLogData>");
qDBusRegisterMetaType<ServiceErrorLogData>();
qDBusRegisterMetaType<QList<ServiceErrorLogData> >();
}
QDBusArgument &operator<<(QDBusArgument &argument, const ServiceErrorLogData &logData)
{
argument.beginStructure();
argument << logData.m_Label;
argument << logData.m_Value;
argument.endStructure();
return argument;
}
const QDBusArgument &operator>>(const QDBusArgument &argument, ServiceErrorLogData &logData)
{
argument.beginStructure();
argument >> logData.m_Label;
argument >> logData.m_Value;
argument.endStructure();
return argument;
}
------------------- End ServiceErrorLogData.cpp -------------------
------------------ Begin ServiceErrorLogData.h ------------------
#ifndef SERVICEERRORLOGDATA_H
#define SERVICEERRORLOGDATA_H
#include <qt5/QtCore/QCoreApplication>
#include <qt5/QtDBus/QtDBus>
class ServiceErrorLogData
{
public:
ServiceErrorLogData();
ServiceErrorLogData(const QString &label, const QString &value);
ServiceErrorLogData(const ServiceErrorLogData &other);
ServiceErrorLogData& operator=(const ServiceErrorLogData &other);
~ServiceErrorLogData();
friend QDBusArgument &operator<<(QDBusArgument &argument, const ServiceErrorLogData &logData);
friend const QDBusArgument &operator>>(const QDBusArgument &argument, ServiceErrorLogData &logData);
QString label() const;
QString value() const;
// Register ServiceErrorLogData with the Qt type system
static void registerMetaType();
private:
QString m_Label;
QString m_Value;
};
Q_DECLARE_METATYPE(ServiceErrorLogData)
#endif // SERVICEERRORLOGDATA_H
------------------- End ServiceErrorLogData.h --------------------
-------------------- Begin ServiceData.xml -----------------------
<!DOCTYPE node PUBLIC "-//freedesktop//DTD D-BUS Object Introspection 1.0//EN" "http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd"<http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd>>
<node>
<interface name="com.GDM.ServiceData">
<method name="serviceErrorLog">
<arg name="QList<ServiceErrorLogData>" type="a(ss)" direction="out"/>
<annotation name="org.qtproject.QtDBus.QtTypeName.Out0" value="QList<ServiceErrorLogData>"/>
</method>
</interface>
</node>
-------------------- End ServiceData.h -----------------------
---------------- Begin com.GDM.ServiceData.conf -------------------
<!DOCTYPE busconfig PUBLIC "-//freedesktop//DTD D-BUS Bus Configuration 1.0//EN"
"http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd"<http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd>>
<busconfig>
<policy user="root">
<allow own="com.GDM.ServiceData"/>
<allow send_type="method_call" log="true"/>
</policy>
<policy context="default">
<allow send_interface="com.GDM.ServiceData"/>
<allow receive_sender="com.GDM.ServiceData"/>
<allow receive_interface="com.GDM.ServiceData"/>
</policy>
</busconfig>
---------------- End com.GDM.ServiceData.conf -------------------
------------------ Begin DataProcess.pro ---------------------
#-------------------------------------------------
#
# Project created by QtCreator 2014-07-16T11:59:31
#
#-------------------------------------------------
QT += dbus
DBUS_ADAPTORS += ServiceData.xml
QMAKE_LFLAGS_APP += -rdynamic
QT += core
QT -= gui
TARGET = Data
CONFIG += console
CONFIG -= app_bundle
TEMPLATE = app
INCLUDEPATH += \
$${OUT_PWD}/../Data/
SOURCES += main.cpp \
ServiceData.cpp \
ServiceErrorLogData.cpp
HEADERS += \
ServiceData.h \
ServiceErrorLogData.h
OTHER_FILES += \
ServiceData.xml
# Install the dbus system config file
application_interfaces.path = /etc/dbus-1/system.d/
application_interfaces.files = com.GDM.ServiceData.conf
INSTALLS += application_interfaces
# install
target.path = /opt/dbustest
INSTALLS += target
------------------- End DataProcess.pro ----------------------
------------------- Begin ServiceDataAdaptor.cpp ----------------------
/*
* This file was generated by qdbusxml2cpp version 0.7
* Command line was: qdbusxml2cpp ServiceData.xml -i ServiceData.h -a ServiceDataAdaptor
*
* qdbusxml2cpp is Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
*
* This is an auto-generated file.
* Do not edit! All changes made to it will be lost.
*/
#include "ServiceDataAdaptor.h"
#include <QtCore/QMetaObject>
#include <QtCore/QByteArray>
#include <QtCore/QList>
#include <QtCore/QMap>
#include <QtCore/QString>
#include <QtCore/QStringList>
#include <QtCore/QVariant>
/*
* Implementation of adaptor class ServiceDataAdaptor
*/
ServiceDataAdaptor::ServiceDataAdaptor(QObject *parent)
: QDBusAbstractAdaptor(parent)
{
// constructor
setAutoRelaySignals(true);
}
ServiceDataAdaptor::~ServiceDataAdaptor()
{
// destructor
}
void ServiceDataAdaptor::serviceErrorLog()
{
// handle method call com.GDM.ServiceData.serviceErrorLog
QMetaObject::invokeMethod(parent(), "serviceErrorLog");
}
------------------- End ServiceDataAdaptor.cpp ----------------------
------------------- Begin ServiceDataAdaptor.h ----------------------
/*
* This file was generated by qdbusxml2cpp version 0.7
* Command line was: qdbusxml2cpp ServiceData.xml -i ServiceData.h -a ServiceDataAdaptor
*
* qdbusxml2cpp is Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
*
* This is an auto-generated file.
* This file may have been hand-edited. Look for HAND-EDIT comments
* before re-generating it.
*/
#ifndef SERVICEDATAADAPTOR_H_1409684640
#define SERVICEDATAADAPTOR_H_1409684640
#include <QtCore/QObject>
#include <QtDBus/QtDBus>
#include "ServiceData.h"
class QByteArray;
template<class T> class QList;
template<class Key, class Value> class QMap;
class QString;
class QStringList;
class QVariant;
/*
* Adaptor class for interface com.GDM.ServiceData
*/
class ServiceDataAdaptor: public QDBusAbstractAdaptor
{
Q_OBJECT
Q_CLASSINFO("D-Bus Interface", "com.GDM.ServiceData")
Q_CLASSINFO("D-Bus Introspection", ""
" <interface name=\"com.GDM.ServiceData\">\n"
" <method name=\"serviceErrorLog\"/>\n"
" </interface>\n"
"")
public:
ServiceDataAdaptor(QObject *parent);
virtual ~ServiceDataAdaptor();
public: // PROPERTIES
public Q_SLOTS: // METHODS
void serviceErrorLog();
Q_SIGNALS: // SIGNALS
};
#endif
------------------- End ServiceDataAdaptor.h ----------------------
------------------- Begin ServiceDataInterface.cpp ----------------------
/*
* This file was generated by qdbusxml2cpp version 0.7
* Command line was: qdbusxml2cpp ServiceData.xml -i ServiceData.h -p ServiceDataInterface
*
* qdbusxml2cpp is Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
*
* This is an auto-generated file.
* This file may have been hand-edited. Look for HAND-EDIT comments
* before re-generating it.
*/
#include "ServiceDataInterface.h"
/*
* Implementation of interface class ComGDMServiceDataInterface
*/
ComGDMServiceDataInterface::ComGDMServiceDataInterface(const QString &service, const QString &path, const QDBusConnection &connection, QObject *parent)
: QDBusAbstractInterface(service, path, staticInterfaceName(), connection, parent)
{
}
ComGDMServiceDataInterface::~ComGDMServiceDataInterface()
{
}
------------------- End ServiceDataInterface.cpp ----------------------
------------------- Begin ServiceDataInterface.h ----------------------
/*
* This file was generated by qdbusxml2cpp version 0.7
* Command line was: qdbusxml2cpp ServiceData.xml -i ServiceData.h -p ServiceDataInterface
*
* qdbusxml2cpp is Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
*
* This is an auto-generated file.
* Do not edit! All changes made to it will be lost.
*/
#ifndef SERVICEDATAINTERFACE_H_1409684768
#define SERVICEDATAINTERFACE_H_1409684768
#include <QtCore/QObject>
#include <QtCore/QByteArray>
#include <QtCore/QList>
#include <QtCore/QMap>
#include <QtCore/QString>
#include <QtCore/QStringList>
#include <QtCore/QVariant>
#include <QtDBus/QtDBus>
#include "ServiceData.h"
/*
* Proxy class for interface com.GDM.ServiceData
*/
class ComGDMServiceDataInterface: public QDBusAbstractInterface
{
Q_OBJECT
public:
static inline const char *staticInterfaceName()
{ return "com.GDM.ServiceData"; }
public:
ComGDMServiceDataInterface(const QString &service, const QString &path, const QDBusConnection &connection, QObject *parent = 0);
~ComGDMServiceDataInterface();
public Q_SLOTS: // METHODS
inline QDBusPendingReply<> serviceErrorLog()
{
QList<QVariant> argumentList;
return asyncCallWithArgumentList(QLatin1String("serviceErrorLog"), argumentList);
}
Q_SIGNALS: // SIGNALS
};
namespace com {
namespace GDM {
typedef ::ComGDMServiceDataInterface ServiceData;
}
}
#endif
------------------- End ServiceDataInterface.h ----------------------
Comm Process...
------------------------- Begin main.cpp -------------------------
#include <qt5/QtCore/QCoreApplication>
#include <qt5/QtDBus/QtDBus>
#include "CanData.h"
#include "ServiceErrorLogData.h"
int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);
ServiceErrorLogData::registerMetaType();
CanData *canData = new CanData();
Q_UNUSED(canData);
return a.exec();
}
------------------------- End main.cpp -------------------------
------------------------ Begin CanData.cpp ------------------------
#include <qt5/QtCore/QCoreApplication>
#include <qt5/QtDBus/QtDBus>
#include "CanData.h"
#include "ServiceErrorLogData.h"
CanData::CanData(QObject *parent) : QObject(parent)
{
m_ServiceData = new com::GDM::ServiceData("com.GDM.ServiceData", "/ServiceData", QDBusConnection::systemBus(), this);
// Setup the timer
m_Timer = new QTimer(this);
connect(m_Timer, SIGNAL(timeout()), this, SLOT(generateTestData()));
m_Timer->start(800);
}
void CanData::generateTestData()
{
QDBusPendingReply<QList<ServiceErrorLogData> > logData = m_ServiceData->serviceErrorLog();
logData.waitForFinished();
if (logData.isError())
{
qDebug() << logData.error();
}
QList<ServiceErrorLogData> tempData = logData.value();
qDebug() << "Log Data Count: " << tempData.count();
}
------------------------ End CanData.cpp ------------------------
------------------------ Begin CanData.h ------------------------
#ifndef CANDATA_H
#define CANDATA_H
#include <qt5/QtDBus/QtDBus>
#include "ServiceDataInterface.h"
class CanData : public QObject
{
Q_OBJECT
public:
explicit CanData(QObject *parent = 0);
private slots:
void generateTestData();
private:
com::GDM::ServiceData *m_ServiceData;
QTimer *m_Timer;
};
#endif // CANDATA_H
------------------------ End CanData.h ------------------------
---------------------- Begin CommProcess.pro ---------------------
#-------------------------------------------------
#
# Project created by QtCreator 2014-04-18T09:19:20
#
#-------------------------------------------------
QT += dbus
DBUS_INTERFACES += ../DataProcess/ServiceData.xml
QMAKE_LFLAGS_APP += -rdynamic
QT += core
QT -= gui
TARGET = CanComm
CONFIG += console
CONFIG -= app_bundle
TEMPLATE = app
INCLUDEPATH += \
../DataProcess/ \
$${OUT_PWD}/../CanComm/ \
$${OUT_PWD}/../Data/
SOURCES += main.cpp \
CanData.cpp \
../DataProcess/ServiceErrorLogData.cpp
HEADERS += \
CanData.h \
../DataProcess/ServiceErrorLogData.h
# install
target.path = /opt/dbustest
INSTALLS += target
---------------------- End CommProcess.pro ---------------------
Top level project file...
---------------------- Begin dbustest.pro ---------------------
TEMPLATE = subdirs
SUBDIRS += \
DataProcess/DataProcess.pro \
CommProcess/CommProcess.pro
---------------------- End dbustest.pro ---------------------
Nate
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