QCA::Logger Class Reference

#include <QtCrypto>

Inheritance diagram for QCA::Logger:

Public Types
enum	Severity {   Quiet = 0 , Emergency = 1 , Alert = 2 , Critical = 3 ,   Error = 4 , Warning = 5 , Notice = 6 , Information = 7 ,   Debug = 8 }
Public Types inherited from QObject
typedef	QObjectList

Public Member Functions
QStringList	currentLogDevices () const
Severity	level () const
void	logBinaryMessage (const QByteArray &blob, Severity=Information)
void	logTextMessage (const QString &message, Severity=Information)
void	registerLogDevice (AbstractLogDevice *logger)
void	setLevel (Severity level)
void	unregisterLogDevice (const QString &loggerName)
Public Member Functions inherited from QObject
	QObject (QObject *parent)
QBindable< QString >	bindableObjectName ()
bool	blockSignals (bool block)
const QObjectList &	children () const const
QMetaObject::Connection	connect (const QObject *sender, const char *signal, const char *method, Qt::ConnectionType type) const const
void	deleteLater ()
void	destroyed (QObject *obj)
bool	disconnect (const char *signal, const QObject *receiver, const char *method) const const
bool	disconnect (const QObject *receiver, const char *method) const const
void	dumpObjectInfo () const const
void	dumpObjectTree () const const
QList< QByteArray >	dynamicPropertyNames () const const
virtual bool	event (QEvent *e)
virtual bool	eventFilter (QObject *watched, QEvent *event)
T	findChild (const QString &name, Qt::FindChildOptions options) const const
QList< T >	findChildren (const QRegularExpression &re, Qt::FindChildOptions options) const const
QList< T >	findChildren (const QString &name, Qt::FindChildOptions options) const const
QList< T >	findChildren (Qt::FindChildOptions options) const const
bool	inherits (const char *className) const const
void	installEventFilter (QObject *filterObj)
bool	isQuickItemType () const const
bool	isWidgetType () const const
bool	isWindowType () const const
void	killTimer (int id)
virtual const QMetaObject *	metaObject () const const
void	moveToThread (QThread *targetThread)
QString	objectName () const const
void	objectNameChanged (const QString &objectName)
QObject *	parent () const const
QVariant	property (const char *name) const const
	Q_CLASSINFO (Name, Value)
	Q_EMIT Q_EMIT
	Q_ENUM (...)
	Q_ENUM_NS (...)
	Q_ENUMS (...)
	Q_FLAG (...)
	Q_FLAG_NS (...)
	Q_FLAGS (...)
	Q_GADGET Q_GADGET
	Q_GADGET_EXPORT (EXPORT_MACRO)
	Q_INTERFACES (...)
	Q_INVOKABLE Q_INVOKABLE
	Q_MOC_INCLUDE Q_MOC_INCLUDE
	Q_NAMESPACE Q_NAMESPACE
	Q_NAMESPACE_EXPORT (EXPORT_MACRO)
	Q_OBJECT Q_OBJECT
	Q_PROPERTY (...)
	Q_REVISION Q_REVISION
	Q_SET_OBJECT_NAME (Object)
	Q_SIGNAL Q_SIGNAL
	Q_SIGNALS Q_SIGNALS
	Q_SLOT Q_SLOT
	Q_SLOTS Q_SLOTS
T	qobject_cast (const QObject *object)
T	qobject_cast (QObject *object)
	QT_NO_NARROWING_CONVERSIONS_IN_CONNECT QT_NO_NARROWING_CONVERSIONS_IN_CONNECT
void	removeEventFilter (QObject *obj)
void	setObjectName (const QString &name)
void	setObjectName (QAnyStringView name)
void	setParent (QObject *parent)
bool	setProperty (const char *name, const QVariant &value)
bool	setProperty (const char *name, QVariant &&value)
bool	signalsBlocked () const const
int	startTimer (int interval, Qt::TimerType timerType)
int	startTimer (std::chrono::milliseconds interval, Qt::TimerType timerType)
QThread *	thread () const const

Additional Inherited Members
Properties inherited from QObject
	objectName
Static Public Member Functions inherited from QObject
QMetaObject::Connection	connect (const QObject *sender, const char *signal, const QObject *receiver, const char *method, Qt::ConnectionType type)
QMetaObject::Connection	connect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &method, Qt::ConnectionType type)
QMetaObject::Connection	connect (const QObject *sender, PointerToMemberFunction signal, const QObject *context, Functor functor, Qt::ConnectionType type)
QMetaObject::Connection	connect (const QObject *sender, PointerToMemberFunction signal, const QObject *receiver, PointerToMemberFunction method, Qt::ConnectionType type)
QMetaObject::Connection	connect (const QObject *sender, PointerToMemberFunction signal, Functor functor)
bool	disconnect (const QMetaObject::Connection &connection)
bool	disconnect (const QObject *sender, const char *signal, const QObject *receiver, const char *method)
bool	disconnect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &method)
bool	disconnect (const QObject *sender, PointerToMemberFunction signal, const QObject *receiver, PointerToMemberFunction method)
QString	tr (const char *sourceText, const char *disambiguation, int n)
Protected Member Functions inherited from QObject
virtual void	childEvent (QChildEvent *event)
virtual void	connectNotify (const QMetaMethod &signal)
virtual void	customEvent (QEvent *event)
virtual void	disconnectNotify (const QMetaMethod &signal)
bool	isSignalConnected (const QMetaMethod &signal) const const
int	receivers (const char *signal) const const
QObject *	sender () const const
int	senderSignalIndex () const const
virtual void	timerEvent (QTimerEvent *event)

Detailed Description

A simple logging system.

This class provides a simple but flexible approach to logging information that may be used for debugging or system operation diagnostics.

There is a single Logger for each application that uses QCA. You do not need to create this Logger yourself - QCA automatically creates it on startup. You can get access to the Logger using the global QCA::logger() method.

By default the Logger just accepts all messages (binary and text). If you want to get access to those messages, you need to subclass AbstractLogDevice, and register your subclass (using registerLogDevice()). You can then take whatever action is appropriate (e.g. show to the user using the GUI, log to a file or send to standard error).

Definition at line 962 of file qca_support.h.

Member Enumeration Documentation

Severity

enum QCA::Logger::Severity

The severity of the message.

This information may be used by the log device to determine what the appropriate action is.

Enumerator
Quiet	Quiet: turn of logging.
Emergency	Emergency: system is unusable.
Alert	Alert: action must be taken immediately.
Critical	Critical: critical conditions.
Error	Error: error conditions.
Warning	Warning: warning conditions.
Notice	Notice: normal but significant condition.
Information	Informational: informational messages.
Debug	Debug: debug-level messages.

Definition at line 972 of file qca_support.h.

Member Function Documentation

currentLogDevices()

QStringList QCA::Logger::currentLogDevices

(

)

const

Get a list of the names of all registered log devices.

level()

Severity QCA::Logger::level ( ) const

inline

Get the current logging level.

Returns

Current level

Definition at line 990 of file qca_support.h.

logBinaryMessage()

void QCA::Logger::logBinaryMessage	(	const QByteArray &	blob,
		Severity	= Information )

Log a binary blob to all available log devices.

Parameters

blob	the information to log

Note

how this is handled is quite logger specific. For example, it might be logged as a binary, or it might be encoded in some way

logTextMessage()

void QCA::Logger::logTextMessage	(	const QString &	message,
		Severity	= Information )

Log a message to all available log devices.

Parameters

message

the text to log

registerLogDevice()

void QCA::Logger::registerLogDevice

(

AbstractLogDevice *

logger

)

Add an AbstractLogDevice subclass to the existing list of loggers.

Parameters

logger

the LogDevice to add

setLevel()

void QCA::Logger::setLevel

(

Severity

level

)

Set the current logging level.

Parameters

level

new logging level

Only severities less or equal than the log level one will be logged

unregisterLogDevice()

void QCA::Logger::unregisterLogDevice

(

const QString &

loggerName

)

Remove an AbstractLogDevice subclass from the existing list of loggers.

Parameters

loggerName

the name of the LogDevice to remove

Note

If there are several log devices with the same name, all will be removed.

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The documentation for this class was generated from the following file:

• qca_support.h