The RetryNode is used to execute a child several times if it fails. More...

#include <retry_node.h>

Inheritance diagram for BT::RetryNode:

[legend]

Public Member Functions
virtual void	halt () override
	The method used to interrupt the execution of this node. More...

	RetryNode (const std::string &name, const NodeConfig &config)

	RetryNode (const std::string &name, int NTries)

virtual	~RetryNode () override=default

Public Member Functions inherited from BT::DecoratorNode
TreeNode *	child ()

const TreeNode *	child () const

	DecoratorNode (const std::string &name, const NodeConfig &config)

NodeStatus	executeTick () override
	The method that should be used to invoke tick() and setStatus();. More...

void	haltChild ()
	Same as resetChild() More...

void	resetChild ()

void	setChild (TreeNode *child)

virtual NodeType	type () const override

virtual	~DecoratorNode () override=default

Public Member Functions inherited from BT::TreeNode
const NodeConfig &	config () const

void	emitWakeUpSignal ()
	Notify that the tree should be ticked again() More...

const std::string &	fullPath () const

template<typename T >
Expected< T >	getInput (const std::string &key) const

template<typename T >
Result	getInput (const std::string &key, T &destination) const

template<typename T >
Expected< StampedValue< T > >	getInputStamped (const std::string &key) const

template<typename T >
Expected< Timestamp >	getInputStamped (const std::string &key, T &destination) const
	getInputStamped is similar to getInput(dey, destination), but it returne also the Timestamp object, that can be used to check if a value was updated and when. More...

AnyPtrLocked	getLockedPortContent (const std::string &key)
	getLockedPortContent should be used when: More...

StringView	getRawPortValue (const std::string &key) const

void	haltNode ()

bool	isHalted () const

const std::string &	name () const
	Name of the instance, not the type. More...

TreeNode &	operator= (const TreeNode &other)=delete

TreeNode &	operator= (TreeNode &&other) noexcept

const std::string &	registrationName () const
	registrationName is the ID used by BehaviorTreeFactory to create an instance. More...

bool	requiresWakeUp () const

template<typename T >
Result	setOutput (const std::string &key, const T &value)
	setOutput modifies the content of an Output port More...

void	setPostTickFunction (PostTickCallback callback)

void	setPreTickFunction (PreTickCallback callback)

void	setTickMonitorCallback (TickMonitorCallback callback)

NodeStatus	status () const

StatusChangeSubscriber	subscribeToStatusChange (StatusChangeCallback callback)
	subscribeToStatusChange is used to attach a callback to a status change. When StatusChangeSubscriber goes out of scope (it is a shared_ptr) the callback is unsubscribed automatically. More...

	TreeNode (const TreeNode &other)=delete

	TreeNode (std::string name, NodeConfig config)
	TreeNode main constructor. More...

	TreeNode (TreeNode &&other) noexcept

uint16_t	UID () const

BT::NodeStatus	waitValidStatus ()

virtual	~TreeNode ()

Static Public Member Functions
static PortsList	providedPorts ()

Static Public Member Functions inherited from BT::TreeNode
static Expected< StringView >	getRemappedKey (StringView port_name, StringView remapped_port)

template<class DerivedT , typename... ExtraArgs>
static std::unique_ptr< TreeNode >	Instantiate (const std::string &name, const NodeConfig &config, ExtraArgs... args)

static bool	isBlackboardPointer (StringView str, StringView *stripped_pointer=nullptr)
	Check a string and return true if it matches the pattern: {...}. More...

static StringView	stripBlackboardPointer (StringView str)

Private Member Functions
virtual BT::NodeStatus	tick () override
	Method to be implemented by the user. More...

Private Attributes
int	max_attempts_

bool	read_parameter_from_ports_

int	try_count_

Static Private Attributes
static constexpr const char *	NUM_ATTEMPTS = "num_attempts"

Additional Inherited Members
Public Types inherited from BT::TreeNode
using	PostTickCallback = std::function< NodeStatus(TreeNode &, NodeStatus)>

using	PreTickCallback = std::function< NodeStatus(TreeNode &)>

typedef std::shared_ptr< TreeNode >	Ptr

using	StatusChangeCallback = StatusChangeSignal::CallableFunction

using	StatusChangeSignal = Signal< TimePoint, const TreeNode &, NodeStatus, NodeStatus >

using	StatusChangeSubscriber = StatusChangeSignal::Subscriber

using	TickMonitorCallback = std::function< void(TreeNode &, NodeStatus, std::chrono::microseconds)>

Protected Types inherited from BT::TreeNode
using	PostScripts = std::array< ScriptFunction, size_t(PostCond::COUNT_)>

using	PreScripts = std::array< ScriptFunction, size_t(PreCond::COUNT_)>

Protected Member Functions inherited from BT::TreeNode
NodeConfig &	config ()

void	modifyPortsRemapping (const PortsRemapping &new_remapping)

template<typename T >
T	parseString (const std::string &str) const

PostScripts &	postConditionsScripts ()

PreScripts &	preConditionsScripts ()

void	resetStatus ()
	Set the status to IDLE. More...

void	setRegistrationID (StringView ID)

void	setStatus (NodeStatus new_status)
	setStatus changes the status of the node. it will throw if you try to change the status to IDLE, because your parent node should do that, not the user! More...

void	setWakeUpInstance (std::shared_ptr< WakeUpSignal > instance)

Protected Attributes inherited from BT::DecoratorNode
TreeNode *	child_node_

Detailed Description

The RetryNode is used to execute a child several times if it fails.

If the child returns SUCCESS, the loop is stopped and this node returns SUCCESS.

If the child returns FAILURE, this node will try again up to N times (N is read from port "num_attempts").

Example:

Note: RetryNodeTypo is only included to support the deprecated typo "RetryUntilSuccesful" (note the single 's' in Succesful)

Definition at line 39 of file retry_node.h.

Constructor & Destructor Documentation

◆ RetryNode() [1/2]

BT::RetryNode::RetryNode	(	const std::string &	name,
		int	NTries
	)

Definition at line 20 of file retry_node.cpp.

◆ RetryNode() [2/2]

BT::RetryNode::RetryNode	(	const std::string &	name,
		const NodeConfig &	config
	)

Definition at line 29 of file retry_node.cpp.

◆ ~RetryNode()

virtual BT::RetryNode::~RetryNode ( )

overridevirtualdefault

Member Function Documentation

◆ halt()

void BT::RetryNode::halt ( )

overridevirtual

The method used to interrupt the execution of this node.

Reimplemented from BT::DecoratorNode.

Definition at line 36 of file retry_node.cpp.

◆ providedPorts()

static PortsList BT::RetryNode::providedPorts ( )

inlinestatic

Definition at line 48 of file retry_node.h.

◆ tick()

NodeStatus BT::RetryNode::tick ( )

overrideprivatevirtual

Method to be implemented by the user.

Implements BT::TreeNode.

Definition at line 42 of file retry_node.cpp.

Member Data Documentation

◆ max_attempts_

int BT::RetryNode::max_attempts_

private

Definition at line 57 of file retry_node.h.

◆ NUM_ATTEMPTS

constexpr const char * BT::RetryNode::NUM_ATTEMPTS = "num_attempts"

staticconstexprprivate

Definition at line 61 of file retry_node.h.

◆ read_parameter_from_ports_

bool BT::RetryNode::read_parameter_from_ports_

private

Definition at line 60 of file retry_node.h.

◆ try_count_

int BT::RetryNode::try_count_

private

Definition at line 58 of file retry_node.h.

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

Public Member Functions

Static Public Member Functions

Private Member Functions

Private Attributes

Static Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ RetryNode() [1/2]

◆ RetryNode() [2/2]

◆ ~RetryNode()

Member Function Documentation

◆ halt()

◆ providedPorts()

◆ tick()

Member Data Documentation

◆ max_attempts_

◆ NUM_ATTEMPTS

◆ read_parameter_from_ports_

◆ try_count_