KGAPI2::Job

#include <job.h>

Inheritance diagram for KGAPI2::Job:

[legend]

Properties
bool	isRunning

int	maxTimeout

Properties inherited from QObject
	objectName

Signals
void	finished (KGAPI2::Job *job)

void	progress (KGAPI2::Job *job, int processed, int total)

Public Member Functions
	Job (const AccountPtr &account, QObject *parent=nullptr)

	Job (QObject *parent=nullptr)

	~Job () override

AccountPtr	account () const

KGAPI2::Error	error () const

QString	errorString () const

QStringList	fields () const

bool	isRunning () const

int	maxTimeout () const

bool	prettyPrint () const

void	restart ()

void	setAccount (const AccountPtr &account)

void	setFields (const QStringList &fields)

void	setMaxTimeout (int maxTimeout)

void	setPrettyPrint (bool prettyPrint)

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

Static Public Member Functions
static QString	buildSubfields (const QString &field, const QStringList &fields)

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
virtual void	aboutToFinish ()

virtual void	aboutToStart ()

virtual void	dispatchRequest (QNetworkAccessManager *accessManager, const QNetworkRequest &request, const QByteArray &data, const QString &contentType)=0

virtual void	emitFinished ()

virtual void	emitProgress (int processed, int total)

virtual void	enqueueRequest (const QNetworkRequest &request, const QByteArray &data=QByteArray(), const QString &contentType=QString())

virtual bool	handleError (int statusCode, const QByteArray &rawData)

virtual void	handleReply (const QNetworkReply *reply, const QByteArray &rawData)=0

void	setError (KGAPI2::Error error)

void	setErrorString (const QString &errorString)

virtual void	start ()=0

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)

Additional Inherited Members
Public Attributes inherited from QObject
typedef	QObjectList

Detailed Description

Abstract base class for all jobs in LibKGAPI.

Usual workflow of Job subclasses is to reimplement Job::start, Job::dispatchRequest and Job::handleReply, then enqueue a QNetworkRequest using Job::enqueueRequest. Authorization headers and standard query parameters will be set by Job class. The request will automatically be scheduled in a queue and dispatched by calling Job::dispatchRequest implementation. When a reply is received, the Job will automatically perform error handling and if there is no error, the reply is passed to implementation of Job::handleReply.

Job is automatically started when program enters an event loop.

Author: Daniel Vrátil dvrat.nosp@m.il@r.nosp@m.edhat.nosp@m..com

Since: 2.0

Definition at line 40 of file job.h.

Property Documentation

◆ isRunning

bool KGAPI2::Job::isRunning

read

Whether the job is running.

This property indicates whether the job is running or not. The value is set to true when the job is started (see Job::start) and back to false right before Job::finished is emitted.

See also: Job::isRunning, Job::finished

Definition at line 67 of file job.h.

◆ maxTimeout

int KGAPI2::Job::maxTimeout

readwrite

Maximum interval between requests.

Some Google APIs have a quota on maximum amount of requests per account per second. When this quota is exceeded, the Job will automatically increase the interval between dispatching requests, wait for a while and then try again. If however the interval is increased over maxTimeout, the job will fail and finish immediately. By default maxTimeout is -1, which allows the interval to be increased indefinitely.

See also: Job::maxTimeout, Job::setMaxTimeout

Definition at line 56 of file job.h.

Constructor & Destructor Documentation

◆ Job() [1/2]

Job::Job ( QObject * parent = nullptr )

explicit

Constructor for jobs that don't require authentication.

Parameters

parent

Definition at line 365 of file job.cpp.

◆ Job() [2/2]

Job::Job	(	const AccountPtr &	account,
		QObject *	parent = nullptr )

explicit

Constructor for jobs that require authentication.

Parameters

account	Account to use to authenticate the requests send by this job
parent

See also: Job::Account, Job::setAccount

Definition at line 372 of file job.cpp.

◆ ~Job()

Job::~Job ( )

override

Destructor.

Definition at line 381 of file job.cpp.

Member Function Documentation

◆ aboutToFinish()

void Job::aboutToFinish ( )

protectedvirtual

This method is invoked right before finished() is emitted.

Subclasses can reimplement this method to do a final cleanup before the Job::finished() signal is emitted.

Note: Note that after Job::finished() the job is not running anymore and therefore the job should not modify any data accessible by user.

Definition at line 535 of file job.cpp.

◆ aboutToStart()

void Job::aboutToStart ( )

protectedvirtual

This method is invoked right before Job::start() is called.

Subclasses should reset their internal state and call parent implementation.

Reimplemented in KGAPI2::CreateJob, KGAPI2::FetchJob, and KGAPI2::ModifyJob.

Definition at line 539 of file job.cpp.

◆ account()

AccountPtr Job::account ( ) const

Returns account used to authenticate requests.

For jobs that don't require authentication, this method returns a null pointer.

Returns: Am Account or a null pointer when no account was set.

Definition at line 436 of file job.cpp.

◆ buildSubfields()

QString Job::buildSubfields	(	const QString &	field,
		const QStringList &	fields )

static

Definition at line 476 of file job.cpp.

◆ dispatchRequest()

virtual void KGAPI2::Job::dispatchRequest	(	QNetworkAccessManager *	accessManager,
		const QNetworkRequest &	request,
		const QByteArray &	data,
		const QString &	contentType )

protectedpure virtual

Dispatches request via accessManager.

Because different types of request require different HTTP method to be used, subclasses must reimplement this method and use respective HTTP method to send the request via accessManager.

Parameters

accessManager	QNetworkAccessManager used to dispatch the request
request	Request to dispatch
data	Data to sent in the body of the request
contentType	Content-Type of `data`

Implemented in KGAPI2::EventMoveJob, KGAPI2::AuthJob, KGAPI2::CreateJob, KGAPI2::DeleteJob, KGAPI2::FetchJob, KGAPI2::ModifyJob, KGAPI2::Drive::FileAbstractResumableJob, and KGAPI2::TaskMoveJob.

◆ emitFinished()

void Job::emitFinished ( )

protectedvirtual

Emits Job::finished() signal.

Subclasses should always use this method instead of directly emitting Job::finished().

Definition at line 493 of file job.cpp.

◆ emitProgress()

void Job::emitProgress	(	int	processed,
		int	total )

protectedvirtual

Emit progress() signal.

Subclasses should always use this method instead of directly emitting Job::progress().

Parameters

processed	Amount of already processed items
total	Total amount of items to process

Definition at line 508 of file job.cpp.

◆ enqueueRequest()

void Job::enqueueRequest	(	const QNetworkRequest &	request,
		const QByteArray &	data = QByteArray(),
		const QString &	contentType = QString() )

protectedvirtual

Enqueues request in dispatcher queue.

Subclasses should call this method to enqueue the request in main job queue. The request is automatically dispatched, and reply is handled. Authorization headers and standards query parameters will be applied.

Parameters

request	Request to enqueue
data	Data to be send in body of the request
contentType	Content type of `data`

Definition at line 513 of file job.cpp.

◆ error()

Error Job::error ( ) const

Error code.

This method can only be called after the job has emitted Job::finished signal. Calling this method on a running job will always return KGAPI2::NoError.

Returns: Returns code of occurred error or KGAPI2::NoError when no error has occurred.

Definition at line 391 of file job.cpp.

◆ errorString()

QString Job::errorString ( ) const

Error string.

This method can only be called after the job has emitted Job::finished signal. Calling this method on a running job will always return an empty string.

Returns: Returns localized description of error or an empty string if no error has occurred.

Definition at line 406 of file job.cpp.

◆ fields()

QStringList Job::fields ( ) const

Returns fields selector.

Returns: List of fields

Definition at line 466 of file job.cpp.

◆ finished

void KGAPI2::Job::finished ( KGAPI2::Job * job )

signal

Emitted when job has finished.

The signal is emitted every time, no matter whether the job is successful or an error has occurred.

Subclasses should never ever emit this signal directly. Use Job::emitFinished instead.

Parameters

job	The job that has finished

See also: emitFinished()

◆ handleError()

bool Job::handleError	(	int	statusCode,
		const QByteArray &	rawData )

protectedvirtual

Called when an error occurs.

This allows subclasses to handle error cases that might be specific for their particular API they are implementing. The re-implementation should return true if the error was handled and KGAPI should not perform any more error handling. If the error was not handled, the re-implementation should return false, which is also what the default implementation returns.

Parameters

statusCode	The status code of the respons.
rawData	Raw data of the server response.

Returns: Returns true when the error was handled by the subclass, false otherwise.

Reimplemented in KGAPI2::EventFetchJob.

Definition at line 549 of file job.cpp.

◆ handleReply()

virtual void KGAPI2::Job::handleReply	(	const QNetworkReply *	reply,
		const QByteArray &	rawData )

protectedpure virtual

Called when a reply is received.

Subclasses must reimplement this method to handle reply content.

Parameters

reply	A reply received from server
rawData	Raw content of the reply. Don't use QNetworkReply::readAll, because this method has already been called by Job and thus it would return nothing.

Implemented in KGAPI2::CalendarDeleteJob, KGAPI2::EventDeleteJob, KGAPI2::AuthJob, KGAPI2::CreateJob, KGAPI2::DeleteJob, KGAPI2::FetchJob, KGAPI2::ModifyJob, KGAPI2::Drive::FileAbstractResumableJob, KGAPI2::TaskDeleteJob, KGAPI2::TaskListDeleteJob, and KGAPI2::TaskMoveJob.

◆ isRunning()

bool Job::isRunning ( ) const

Whether job is running.

A job is considered running from the moment it's started until until Job::finished is emitted. Some methods should not be called when a job is running.

Returns: Returns whether this job is currently running.

See also: start()

Definition at line 416 of file job.cpp.

◆ maxTimeout()

int Job::maxTimeout ( ) const

Maximum quota limit.

Returns: Returns maximum timeout in seconds or -1 if there is no timeout set.

See also: Job::setMaxTimeout

Definition at line 421 of file job.cpp.

◆ prettyPrint()

bool Job::prettyPrint ( ) const

Returns prettyPrint query parameter.

Returns: prettyPrint query parameter

Definition at line 451 of file job.cpp.

◆ progress

void KGAPI2::Job::progress	(	KGAPI2::Job *	job,
		int	processed,
		int	total )

signal

Emitted when a job progress changes.

Note that some jobs might not provide progress information, thus this signal will never be emitted.

Parameters

job	The job that the information relates to
processed	Amount of already processed items
total	Total amount of items to process

◆ restart()

void Job::restart ( )

Restarts this job.

When a job finishes, it's possible to run it again, without having to create a new job.

The job will throw away all results retrieved in previous run and retrieve everything again.

See also: Job::aboutToStart

Definition at line 481 of file job.cpp.

◆ setAccount()

void Job::setAccount ( const AccountPtr & account )

Set account to be used to authenticate requests.

By default, no account is set and all request are sent without any authentication.

Parameters

account Account to use

Definition at line 441 of file job.cpp.

◆ setError()

void Job::setError ( KGAPI2::Error error )

protected

Set job error to error.

Parameters

error Error code to set

See also: Job::error

Definition at line 386 of file job.cpp.

◆ setErrorString()

void Job::setErrorString ( const QString & errorString )

protected

Set job error description to errorString.

Parameters

errorString Error description to set

See also: Job::errorString

Definition at line 401 of file job.cpp.

◆ setFields()

void Job::setFields ( const QStringList & fields )

Set subset of fields to include in the response.

Use for better performance.

Parameters

fields List of fields

Definition at line 471 of file job.cpp.

◆ setMaxTimeout()

void Job::setMaxTimeout ( int maxTimeout )

Set maximum quota timeout.

Sets maximum interval for which the job should wait before trying to submit a request that has previously failed due to exceeded quota.

Default timeout is 1 seconds, then after every failed request the timeout is increased exponentially until reaching maxTimeout.

Parameters

maxTimeout Maximum timeout (in seconds), or -1 for no timeout

Definition at line 426 of file job.cpp.

◆ setPrettyPrint()

void Job::setPrettyPrint ( bool prettyPrint )

Sets whether response will have indentations and line breaks.

When this is false, it can reduce the response payload size, which might lead to better performance in some environments. Default is false.

Parameters

prettyPrint

Definition at line 456 of file job.cpp.

◆ start()

virtual void KGAPI2::Job::start ( )

protectedpure virtual

This method is invoked when job is started.

Job is automatically started when application enters event loop.

Implemented in KGAPI2::CalendarCreateJob, KGAPI2::CalendarDeleteJob, KGAPI2::CalendarFetchJob, KGAPI2::CalendarModifyJob, KGAPI2::EventCreateJob, KGAPI2::EventDeleteJob, KGAPI2::EventFetchJob, KGAPI2::EventModifyJob, KGAPI2::EventMoveJob, KGAPI2::AccountInfoFetchJob, KGAPI2::AuthJob, KGAPI2::Drive::AboutFetchJob, KGAPI2::Drive::FileAbstractResumableJob, KGAPI2::LocationCreateJob, KGAPI2::LocationDeleteJob, KGAPI2::LocationFetchHistoryJob, KGAPI2::LocationFetchJob, KGAPI2::TaskCreateJob, KGAPI2::TaskDeleteJob, KGAPI2::TaskFetchJob, KGAPI2::TaskListCreateJob, KGAPI2::TaskListDeleteJob, KGAPI2::TaskListFetchJob, KGAPI2::TaskListModifyJob, KGAPI2::TaskModifyJob, and KGAPI2::TaskMoveJob.

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

KDE's Doxygen guidelines are available online.

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About Kgapi

KGAPI2::Job

Properties

Signals

Public Member Functions

Static Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Property Documentation

◆ isRunning

◆ maxTimeout

Constructor & Destructor Documentation

◆ Job() [1/2]

◆ Job() [2/2]

◆ ~Job()

Member Function Documentation

◆ aboutToFinish()

◆ aboutToStart()

◆ account()

◆ buildSubfields()

◆ dispatchRequest()

◆ emitFinished()

◆ emitProgress()

◆ enqueueRequest()

◆ error()

◆ errorString()

◆ fields()

◆ finished

◆ handleError()

◆ handleReply()

◆ isRunning()

◆ maxTimeout()

◆ prettyPrint()

◆ progress

◆ restart()

◆ setAccount()

◆ setError()

◆ setErrorString()

◆ setFields()

◆ setMaxTimeout()

◆ setPrettyPrint()

◆ start()