Sniffer of ROOT objects, data provider for THttpServer.

Provides methods to scan different structures like folders, directories, files and collections. Can locate objects (or its data member) per name. Can be extended to application-specific classes.

Normally TRootSnifferFull class is used which able to access data from trees, canvases, histograms.

Definition at line 115 of file TRootSniffer.h.

Public Member Functions
	TRootSniffer (const char name="sniff", const char objpath="Objects")
	constructor

virtual	~TRootSniffer ()
	destructor

Bool_t	CanDrawItem (const char *path)
	Method verifies if object can be drawn.

Bool_t	CanExploreItem (const char *path)
	Method returns true when object has childs or one could try to expand item.

Int_t	CheckRestriction (const char *item_name)
	Checked if restriction is applied to the item full_item_name should have full path to the item.

Bool_t	CreateItem (const char fullname, const char title)
	Create item element.

void	CreateOwnTopFolder ()
	Create own TFolder structures independent from gROOT This allows to have many independent TRootSniffer instances At the same time such sniffer lost access to all global lists and folders.

virtual void *	FindInHierarchy (const char path, TClass cl=nullptr, TDataMember member=nullptr, Int_t chld=nullptr)
	Search element with specified path Returns pointer on element Optionally one could obtain element class, member description and number of childs.

TObject *	FindTObjectInHierarchy (const char *path)
	Search element in hierarchy, derived from TObject.

const char *	GetAutoLoad () const
	return name of configured autoload scripts (or 0)

const char *	GetItemField (const char fullname, const char name)
	Return field for specified item.

virtual ULong_t	GetItemHash (const char *itemname)
	Get hash function for specified item used to detect any changes in the specified object.

virtual ULong_t	GetStreamerInfoHash ()

TFolder *	GetTopFolder (Bool_t force=kFALSE)
	Returns top TFolder instance for the sniffer.

Bool_t	HasRestriction (const char *item_name)
	Made fast check if item with specified name is in restriction list If returns true, requires precise check with CheckRestriction() method.

TClass *	IsA () const override

Bool_t	IsReadOnly () const
	Returns readonly mode.

Bool_t	IsScanGlobalDir () const
	Returns true when sniffer allowed to scan global directories.

virtual Bool_t	IsStreamerInfoItem (const char *)

Bool_t	Produce (const std::string &path, const std::string &file, const std::string &options, std::string &res)
	Method produce different kind of data out of object.

Bool_t	RegisterCommand (const char cmdname, const char method, const char *icon)
	Register command which can be executed from web interface.

Bool_t	RegisterObject (const char subfolder, TObject obj)
	Register object in subfolder structure.

void	Restrict (const char path, const char options)
	Restrict access to the specified location.

void	ScanHierarchy (const char topname, const char path, TRootSnifferStore *store, Bool_t only_fields=kFALSE)
	Method scans normal objects, registered in ROOT.

void	SetAutoLoad (const char *scripts="")
	When specified, _autoload attribute will be always add to top element of h.json/h.hml requests Used to instruct browser automatically load special code.

THttpCallArg *	SetCurrentCallArg (THttpCallArg *arg)
	set current http arguments, which then used in different process methods For instance, if user authorized with some user name, depending from restrictions some objects will be invisible or user get full access to the element Returns previous argument which was set before

Bool_t	SetItemField (const char fullname, const char name, const char *value)
	Set field for specified item.

void	SetReadOnly (Bool_t on=kTRUE)
	When readonly on (default), sniffer is not allowed to change ROOT structures For instance, it is not allowed to read new objects from files.

void	SetScanGlobalDir (Bool_t on=kTRUE)
	When enabled (default), sniffer scans gROOT for files, canvases, histograms.

void	Streamer (TBuffer &) override
	Stream an object of class TObject.

void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

Bool_t	UnregisterObject (TObject *obj)
	Unregister (remove) object from folders structures.

Public Member Functions inherited from TNamed
	TNamed ()

	TNamed (const char name, const char title)

	TNamed (const TNamed &named)
	TNamed copy ctor.

	TNamed (const TString &name, const TString &title)

virtual	~TNamed ()
	TNamed destructor.

void	Clear (Option_t *option="") override
	Set name and title to empty strings ("").

TObject *	Clone (const char *newname="") const override
	Make a clone of an object using the Streamer facility.

Int_t	Compare (const TObject *obj) const override
	Compare two TNamed objects.

void	Copy (TObject &named) const override
	Copy this to obj.

virtual void	FillBuffer (char *&buffer)
	Encode TNamed into output buffer.

const char *	GetName () const override
	Returns name of object.

const char *	GetTitle () const override
	Returns title of object.

ULong_t	Hash () const override
	Return hash value for this object.

Bool_t	IsSortable () const override

void	ls (Option_t *option="") const override
	List TNamed name and title.

TNamed &	operator= (const TNamed &rhs)
	TNamed assignment operator.

void	Print (Option_t *option="") const override
	Print TNamed name and title.

virtual void	SetName (const char *name)
	Set the name of the TNamed.

virtual void	SetNameTitle (const char name, const char title)
	Set all the TNamed parameters (name and title).

virtual void	SetTitle (const char *title="")
	Set the title of the TNamed.

virtual Int_t	Sizeof () const
	Return size of the TNamed part of the TObject.

void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

Public Member Functions inherited from TObject
	TObject ()
	TObject constructor.

	TObject (const TObject &object)
	TObject copy ctor.

virtual	~TObject ()
	TObject destructor.

void	AbstractMethod (const char *method) const
	Use this method to implement an "abstract" method that you don't want to leave purely abstract.

virtual void	AppendPad (Option_t *option="")
	Append graphics object to current pad.

virtual void	Browse (TBrowser *b)
	Browse object. May be overridden for another default action.

ULong_t	CheckedHash ()
	Check and record whether this class has a consistent Hash/RecursiveRemove setup (*) and then return the regular Hash value for this object.

virtual const char *	ClassName () const
	Returns name of class to which the object belongs.

virtual void	Delete (Option_t *option="")
	Delete this object.

virtual Int_t	DistancetoPrimitive (Int_t px, Int_t py)
	Computes distance from point (px,py) to the object.

virtual void	Draw (Option_t *option="")
	Default Draw method for all objects.

virtual void	DrawClass () const
	Draw class inheritance tree of the class to which this object belongs.

virtual TObject *	DrawClone (Option_t *option="") const
	Draw a clone of this object in the current selected pad with: `gROOT->SetSelectedPad(c1)`.

virtual void	Dump () const
	Dump contents of object on stdout.

virtual void	Error (const char method, const char msgfmt,...) const
	Issue error message.

virtual void	Execute (const char method, const char params, Int_t *error=nullptr)
	Execute method on this object with the given parameter string, e.g.

virtual void	Execute (TMethod method, TObjArray params, Int_t *error=nullptr)
	Execute method on this object with parameters stored in the TObjArray.

virtual void	ExecuteEvent (Int_t event, Int_t px, Int_t py)
	Execute action corresponding to an event at (px,py).

virtual void	Fatal (const char method, const char msgfmt,...) const
	Issue fatal error message.

virtual TObject *	FindObject (const char *name) const
	Must be redefined in derived classes.

virtual TObject *	FindObject (const TObject *obj) const
	Must be redefined in derived classes.

virtual Option_t *	GetDrawOption () const
	Get option used by the graphics system to draw this object.

virtual const char *	GetIconName () const
	Returns mime type name of object.

virtual char *	GetObjectInfo (Int_t px, Int_t py) const
	Returns string containing info about the object at position (px,py).

virtual Option_t *	GetOption () const

virtual UInt_t	GetUniqueID () const
	Return the unique object id.

virtual Bool_t	HandleTimer (TTimer *timer)
	Execute action in response of a timer timing out.

Bool_t	HasInconsistentHash () const
	Return true is the type of this object is known to have an inconsistent setup for Hash and RecursiveRemove (i.e.

virtual void	Info (const char method, const char msgfmt,...) const
	Issue info message.

virtual Bool_t	InheritsFrom (const char *classname) const
	Returns kTRUE if object inherits from class "classname".

virtual Bool_t	InheritsFrom (const TClass *cl) const
	Returns kTRUE if object inherits from TClass cl.

virtual void	Inspect () const
	Dump contents of this object in a graphics canvas.

void	InvertBit (UInt_t f)

Bool_t	IsDestructed () const
	IsDestructed.

virtual Bool_t	IsEqual (const TObject *obj) const
	Default equal comparison (objects are equal if they have the same address in memory).

virtual Bool_t	IsFolder () const
	Returns kTRUE in case object contains browsable objects (like containers or lists of other objects).

R__ALWAYS_INLINE Bool_t	IsOnHeap () const

R__ALWAYS_INLINE Bool_t	IsZombie () const

void	MayNotUse (const char *method) const
	Use this method to signal that a method (defined in a base class) may not be called in a derived class (in principle against good design since a child class should not provide less functionality than its parent, however, sometimes it is necessary).

virtual Bool_t	Notify ()
	This method must be overridden to handle object notification (the base implementation is no-op).

void	Obsolete (const char method, const char asOfVers, const char *removedFromVers) const
	Use this method to declare a method obsolete.

void	operator delete (void *ptr)
	Operator delete.

void	operator delete (void ptr, void vp)
	Only called by placement new when throwing an exception.

void	operator delete[] (void *ptr)
	Operator delete [].

void	operator delete[] (void ptr, void vp)
	Only called by placement new[] when throwing an exception.

void *	operator new (size_t sz)

void *	operator new (size_t sz, void *vp)

void *	operator new[] (size_t sz)

void *	operator new[] (size_t sz, void *vp)

TObject &	operator= (const TObject &rhs)
	TObject assignment operator.

virtual void	Paint (Option_t *option="")
	This method must be overridden if a class wants to paint itself.

virtual void	Pop ()
	Pop on object drawn in a pad to the top of the display list.

virtual Int_t	Read (const char *name)
	Read contents of object with specified name from the current directory.

virtual void	RecursiveRemove (TObject *obj)
	Recursively remove this object from a list.

void	ResetBit (UInt_t f)

virtual void	SaveAs (const char filename="", Option_t option="") const
	Save this object in the file specified by filename.

virtual void	SavePrimitive (std::ostream &out, Option_t *option="")
	Save a primitive as a C++ statement(s) on output stream "out".

void	SetBit (UInt_t f)

void	SetBit (UInt_t f, Bool_t set)
	Set or unset the user status bits as specified in f.

virtual void	SetDrawOption (Option_t *option="")
	Set drawing option for object.

virtual void	SetUniqueID (UInt_t uid)
	Set the unique object id.

void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

virtual void	SysError (const char method, const char msgfmt,...) const
	Issue system error message.

R__ALWAYS_INLINE Bool_t	TestBit (UInt_t f) const

Int_t	TestBits (UInt_t f) const

virtual void	UseCurrentStyle ()
	Set current style settings in this object This function is called when either TCanvas::UseCurrentStyle or TROOT::ForceStyle have been invoked.

virtual void	Warning (const char method, const char msgfmt,...) const
	Issue warning message.

virtual Int_t	Write (const char *name=nullptr, Int_t option=0, Int_t bufsize=0)
	Write this object to the current directory.

virtual Int_t	Write (const char *name=nullptr, Int_t option=0, Int_t bufsize=0) const
	Write this object to the current directory.

Static Public Member Functions
static TClass *	Class ()

static const char *	Class_Name ()

static constexpr Version_t	Class_Version ()

static const char *	DeclFileName ()

Static Public Member Functions inherited from TNamed
static TClass *	Class ()

static const char *	Class_Name ()

static constexpr Version_t	Class_Version ()

static const char *	DeclFileName ()

Static Public Member Functions inherited from TObject
static TClass *	Class ()

static const char *	Class_Name ()

static constexpr Version_t	Class_Version ()

static const char *	DeclFileName ()

static Longptr_t	GetDtorOnly ()
	Return destructor only flag.

static Bool_t	GetObjectStat ()
	Get status of object stat flag.

static void	SetDtorOnly (void *obj)
	Set destructor only flag.

static void	SetObjectStat (Bool_t stat)
	Turn on/off tracking of objects in the TObjectTable.

Protected Member Functions
Bool_t	AccessField (TFolder parent, TObject item, const char name, const char value, TNamed **only_get=nullptr)
	Set or get field for the child.

virtual Bool_t	CallProduceImage (const std::string &kind, const std::string &path, const std::string &options, std::string &res)
	Invokes TRootSniffer::ProduceIamge, converting kind into TImage::EImageFileTypes type.

virtual Bool_t	CanDrawClass (TClass *)

TString	DecodeUrlOptionValue (const char *value, Bool_t remove_quotes=kTRUE)
	Method replaces all kind of special symbols, which could appear in URL options.

virtual Bool_t	ExecuteCmd (const std::string &path, const std::string &options, std::string &res)
	Execute command marked as _kind=='Command'.

TObject *	GetItem (const char fullname, TFolder &parent, Bool_t force=kFALSE, Bool_t within_objects=kTRUE)
	Return item from the subfolders structure.

const char *	GetItemField (TFolder parent, TObject item, const char *name)
	Return field for specified item.

TFolder *	GetSubFolder (const char *foldername, Bool_t force=kFALSE)
	Creates subfolder where objects can be registered.

virtual Bool_t	HasStreamerInfo () const

Bool_t	IsItemField (TObject *obj) const
	Return true when object is TNamed with kItemField bit set.

virtual Bool_t	ProduceBinary (const std::string &path, const std::string &options, std::string &res)
	Produce binary data for specified item.

virtual Bool_t	ProduceExe (const std::string &path, const std::string &options, Int_t reskind, std::string &res)
	Execute command for specified object.

virtual Bool_t	ProduceImage (Int_t kind, const std::string &path, const std::string &options, std::string &res)
	Method to produce image from specified object.

virtual Bool_t	ProduceItem (const std::string &path, const std::string &options, std::string &res, Bool_t asjson=kTRUE)
	Produce JSON/XML for specified item.

virtual Bool_t	ProduceJson (const std::string &path, const std::string &options, std::string &res)
	Produce JSON data for specified item For object conversion TBufferJSON is used.

virtual Bool_t	ProduceMulti (const std::string &path, const std::string &options, std::string &res, Bool_t asjson=kTRUE)
	Process several requests, packing all results into binary or JSON buffer.

virtual Bool_t	ProduceRootFile (const std::string &path, const std::string &options, std::string &res)
	Produce ROOT file for specified item.

virtual Bool_t	ProduceXml (const std::string &path, const std::string &options, std::string &res)
	Produce XML data for specified item.

void	ScanCollection (TRootSnifferScanRec &rec, TCollection lst, const char foldername=nullptr, TCollection *keys_lst=nullptr)
	Scan collection content.

virtual void	ScanKeyProperties (TRootSnifferScanRec &rec, TKey key, TObject &obj, TClass *&obj_class)
	Scans TKey properties in special cases load objects from the file.

virtual void	ScanObjectChilds (TRootSnifferScanRec &rec, TObject *obj)
	scans object childs (if any) here one scans collection, branches, trees and so on

void	ScanObjectMembers (TRootSnifferScanRec &rec, TClass cl, char ptr)
	scan object data members some members like enum or static members will be excluded

virtual void	ScanObjectProperties (TRootSnifferScanRec &rec, TObject *obj)
	Scans object properties here such fields as _autoload or _icon properties depending on class or object name could be assigned By default properties, coded in the Class title are scanned.

virtual void	ScanRoot (TRootSnifferScanRec &rec)
	scan complete ROOT objects hierarchy For the moment it includes objects in gROOT directory and list of canvases and files Also all registered objects are included.

Int_t	WithCurrentUserName (const char *option)
	return 2 when option match to current user name return 1 when option==all return 0 when option does not match user name

Protected Member Functions inherited from TObject
virtual void	DoError (int level, const char location, const char fmt, va_list va) const
	Interface to ErrorHandler (protected).

void	MakeZombie ()

Protected Attributes
TString	fAutoLoad
	! scripts names, which are add as _autoload parameter to h.json request

TString	fCurrentAllowedMethods
	! list of allowed methods, extracted when analyzed object restrictions

THttpCallArg *	fCurrentArg {nullptr}
	! current http arguments (if any)

Int_t	fCurrentRestrict {0}
	! current restriction for last-found object

TString	fObjectsPath
	! default path for registered objects

Bool_t	fReadOnly {kTRUE}
	! indicate if sniffer allowed to change ROOT structures - like read objects from file

TList	fRestrictions
	! list of restrictions for different locations

Bool_t	fScanGlobalDir {kTRUE}
	! when enabled (default), scan gROOT for histograms, canvases, open files

std::unique_ptr< TFolder >	fTopFolder
	! own top TFolder object, used for registering objects

Protected Attributes inherited from TNamed
TString	fName

TString	fTitle

Private Types
enum	{ kItemField = (1ULL << ( 21 )) }

Additional Inherited Members
Public Types inherited from TObject
enum	{ kIsOnHeap = 0x01000000 , kNotDeleted = 0x02000000 , kZombie = 0x04000000 , kInconsistent = 0x08000000 , kBitMask = 0x00ffffff }

enum	{ kSingleKey = (1ULL << ( 0 )) , kOverwrite = (1ULL << ( 1 )) , kWriteDelete = (1ULL << ( 2 )) }

enum	EDeprecatedStatusBits { kObjInCanvas = (1ULL << ( 3 )) }

enum	EStatusBits { kCanDelete = (1ULL << ( 0 )) , kMustCleanup = (1ULL << ( 3 )) , kIsReferenced = (1ULL << ( 4 )) , kHasUUID = (1ULL << ( 5 )) , kCannotPick = (1ULL << ( 6 )) , kNoContextMenu = (1ULL << ( 8 )) , kInvalidObject = (1ULL << ( 13 )) }

Protected Types inherited from TObject
enum	{ kOnlyPrepStep = (1ULL << ( 3 )) }

#include <TRootSniffer.h>

Inheritance diagram for TRootSniffer:

[legend]

Member Enumeration Documentation

◆ anonymous enum

anonymous enum

private

Enumerator
kItemField

Definition at line 116 of file TRootSniffer.h.

Constructor & Destructor Documentation

◆ TRootSniffer()

TRootSniffer::TRootSniffer	(	const char *	name = `"sniff"`,
		const char *	objpath = `"Objects"`
	)

constructor

Definition at line 415 of file TRootSniffer.cxx.

◆ ~TRootSniffer()

TRootSniffer::~TRootSniffer ( )

virtual

destructor

Definition at line 424 of file TRootSniffer.cxx.

Member Function Documentation

◆ AccessField()

Bool_t TRootSniffer::AccessField	(	TFolder *	parent,
		TObject *	chld,
		const char *	name,
		const char *	value,
		TNamed **	only_get = `nullptr`
	)

protected

Set or get field for the child.

each field coded as TNamed object, placed after chld in the parent hierarchy

Definition at line 1718 of file TRootSniffer.cxx.

◆ CallProduceImage()

Bool_t TRootSniffer::CallProduceImage	(	const std::string &	kind,
		const std::string &	path,
		const std::string &	options,
		std::string &	res
	)

protectedvirtual

Invokes TRootSniffer::ProduceIamge, converting kind into TImage::EImageFileTypes type.

Reimplemented in TRootSnifferFull.

Definition at line 1489 of file TRootSniffer.cxx.

◆ CanDrawClass()

virtual Bool_t TRootSniffer::CanDrawClass ( TClass * )

inlineprotectedvirtual

Reimplemented in TRootSnifferFull.

Definition at line 160 of file TRootSniffer.h.

◆ CanDrawItem()

Bool_t TRootSniffer::CanDrawItem ( const char * path )

Method verifies if object can be drawn.

Definition at line 1109 of file TRootSniffer.cxx.

◆ CanExploreItem()

Bool_t TRootSniffer::CanExploreItem ( const char * path )

Method returns true when object has childs or one could try to expand item.

Definition at line 1120 of file TRootSniffer.cxx.

◆ CheckRestriction()

Int_t TRootSniffer::CheckRestriction ( const char * full_item_name )

Checked if restriction is applied to the item full_item_name should have full path to the item.

Returns:

-1 - object invisible, cannot be accessed or listed
0 - no explicit restrictions, use default
1 - read-only access
2 - full access

Definition at line 546 of file TRootSniffer.cxx.

◆ Class()

static TClass * TRootSniffer::Class ( )

static

Returns: TClass describing this class

◆ Class_Name()

static const char * TRootSniffer::Class_Name ( )

static

Returns: Name of this class

◆ Class_Version()

static constexpr Version_t TRootSniffer::Class_Version ( )

inlinestaticconstexpr

Returns: Version of this class

Definition at line 249 of file TRootSniffer.h.

◆ CreateItem()

Bool_t TRootSniffer::CreateItem	(	const char *	fullname,
		const char *	title
	)

Create item element.

Definition at line 1691 of file TRootSniffer.cxx.

◆ CreateOwnTopFolder()

void TRootSniffer::CreateOwnTopFolder ( )

Create own TFolder structures independent from gROOT This allows to have many independent TRootSniffer instances At the same time such sniffer lost access to all global lists and folders.

Definition at line 913 of file TRootSniffer.cxx.

◆ DeclFileName()

static const char * TRootSniffer::DeclFileName ( )

inlinestatic

Returns: Name of the file containing the class declaration

Definition at line 249 of file TRootSniffer.h.

◆ DecodeUrlOptionValue()

TString TRootSniffer::DecodeUrlOptionValue	(	const char *	value,
		Bool_t	remove_quotes = `kTRUE`
	)

protected

Method replaces all kind of special symbols, which could appear in URL options.

Definition at line 1282 of file TRootSniffer.cxx.

◆ ExecuteCmd()

Bool_t TRootSniffer::ExecuteCmd	(	const std::string &	path,
		const std::string &	options,
		std::string &	res
	)

protectedvirtual

Execute command marked as _kind=='Command'.

Definition at line 1164 of file TRootSniffer.cxx.

◆ FindInHierarchy()

void * TRootSniffer::FindInHierarchy	(	const char *	path,
		TClass **	cl = `nullptr`,
		TDataMember **	member = `nullptr`,
		Int_t *	chld = `nullptr`
	)

virtual

Search element with specified path Returns pointer on element Optionally one could obtain element class, member description and number of childs.

When chld!=nullptr, not only element is searched, but also number of childs are counted. When member!=0, any object will be scanned for its data members (disregard of extra options)

Reimplemented in TRootSnifferFull.

Definition at line 1041 of file TRootSniffer.cxx.

◆ FindTObjectInHierarchy()

TObject * TRootSniffer::FindTObjectInHierarchy ( const char * path )

Search element in hierarchy, derived from TObject.

Definition at line 1086 of file TRootSniffer.cxx.

◆ GetAutoLoad()

const char * TRootSniffer::GetAutoLoad ( ) const

return name of configured autoload scripts (or 0)

Definition at line 490 of file TRootSniffer.cxx.

◆ GetItem()

TObject * TRootSniffer::GetItem	(	const char *	fullname,
		TFolder *&	parent,
		Bool_t	force = `kFALSE`,
		Bool_t	within_objects = `kTRUE`
	)

protected

Return item from the subfolders structure.

Definition at line 1571 of file TRootSniffer.cxx.

◆ GetItemField() [1/2]

const char * TRootSniffer::GetItemField	(	const char *	fullname,
		const char *	name
	)

Return field for specified item.

Definition at line 1836 of file TRootSniffer.cxx.

◆ GetItemField() [2/2]

const char * TRootSniffer::GetItemField	(	TFolder *	parent,
		TObject *	item,
		const char *	name
	)

protected

Return field for specified item.

Definition at line 1820 of file TRootSniffer.cxx.

◆ GetItemHash()

ULong_t TRootSniffer::GetItemHash ( const char * itemname )

virtual

Get hash function for specified item used to detect any changes in the specified object.

Reimplemented in TRootSnifferFull.

Definition at line 1099 of file TRootSniffer.cxx.

◆ GetStreamerInfoHash()

virtual ULong_t TRootSniffer::GetStreamerInfoHash ( )

inlinevirtual

Reimplemented in TRootSnifferFull.

Definition at line 243 of file TRootSniffer.h.

◆ GetSubFolder()

TFolder * TRootSniffer::GetSubFolder	(	const char *	foldername,
		Bool_t	force = `kFALSE`
	)

protected

Creates subfolder where objects can be registered.

Definition at line 1622 of file TRootSniffer.cxx.

◆ GetTopFolder()

TFolder * TRootSniffer::GetTopFolder ( Bool_t force = kFALSE )

Returns top TFolder instance for the sniffer.

Definition at line 932 of file TRootSniffer.cxx.

◆ HasRestriction()

Bool_t TRootSniffer::HasRestriction ( const char * item_name )

Made fast check if item with specified name is in restriction list If returns true, requires precise check with CheckRestriction() method.

Definition at line 499 of file TRootSniffer.cxx.

◆ HasStreamerInfo()

virtual Bool_t TRootSniffer::HasStreamerInfo ( ) const

inlineprotectedvirtual

Reimplemented in TRootSnifferFull.

Definition at line 162 of file TRootSniffer.h.

◆ IsA()

TClass * TRootSniffer::IsA ( ) const

inlineoverridevirtual

Returns: TClass describing current object

Reimplemented from TNamed.

Definition at line 249 of file TRootSniffer.h.

◆ IsItemField()

Bool_t TRootSniffer::IsItemField ( TObject * obj ) const

protected

Return true when object is TNamed with kItemField bit set.

such objects used to keep field values for item

Definition at line 1708 of file TRootSniffer.cxx.

◆ IsReadOnly()

Bool_t TRootSniffer::IsReadOnly ( ) const

inline

Returns readonly mode.

Definition at line 193 of file TRootSniffer.h.

◆ IsScanGlobalDir()

Bool_t TRootSniffer::IsScanGlobalDir ( ) const

inline

Returns true when sniffer allowed to scan global directories.

Definition at line 213 of file TRootSniffer.h.

◆ IsStreamerInfoItem()

virtual Bool_t TRootSniffer::IsStreamerInfoItem ( const char * )

inlinevirtual

Reimplemented in TRootSnifferFull.

Definition at line 241 of file TRootSniffer.h.

◆ Produce()

Bool_t TRootSniffer::Produce	(	const std::string &	path,
		const std::string &	file,
		const std::string &	options,
		std::string &	res
	)

Method produce different kind of data out of object.

Parameters

path	specifies object or object member
file	can be:

"root.bin" - binary data
"root.png" - png image
"root.jpeg" - jpeg image
"root.gif" - gif image
"root.xml" - xml representation
"root.json" - json representation
"file.root" - ROOT file with stored object
"exe.json" - method execution with json reply
"exe.bin" - method execution with binary reply
"exe.txt" - method execution with debug output
"cmd.json" - execution of registered commands

Parameters

res	returns result - binary or text.

Definition at line 1514 of file TRootSniffer.cxx.

◆ ProduceBinary()

Bool_t TRootSniffer::ProduceBinary	(	const std::string &	path,
		const std::string &	options,
		std::string &	res
	)

protectedvirtual

Produce binary data for specified item.

If "zipped" option specified in query, buffer will be compressed

Implemented only in TRootSnifferFull class

Reimplemented in TRootSnifferFull.

Definition at line 1442 of file TRootSniffer.cxx.

◆ ProduceExe()

Bool_t TRootSniffer::ProduceExe	(	const std::string &	path,
		const std::string &	options,
		Int_t	reskind,
		std::string &	res
	)

protectedvirtual

Execute command for specified object.

Options include method and extra list of parameters sniffer should be not-readonly to allow execution of the commands reskind defines kind of result 0 - debug, 1 - json, 2 - binary

Method implemented only in TRootSnifferFull class

Reimplemented in TRootSnifferFull.

Definition at line 1316 of file TRootSniffer.cxx.

◆ ProduceImage()

Bool_t TRootSniffer::ProduceImage	(	Int_t	kind,
		const std::string &	path,
		const std::string &	options,
		std::string &	res
	)

protectedvirtual

Method to produce image from specified object.

Parameters:

kind - image kind TImage::kPng, TImage::kJpeg, TImage::kGif
path - path to object
options - extra options

By default, image 300x200 is produced In options string one could provide following parameters:

w - image width
h - image height
opt - draw options

For instance:

http://localhost:8080/Files/hsimple.root/hpx/get.png?w=500&h=500&opt=lego1

Returns produced image in the res string

Method implemented only in TRootSnifferFull class

Reimplemented in TRootSnifferFull.

Definition at line 1481 of file TRootSniffer.cxx.

◆ ProduceItem()

Bool_t TRootSniffer::ProduceItem	(	const std::string &	path,
		const std::string &	options,
		std::string &	res,
		Bool_t	asjson = `kTRUE`
	)

protectedvirtual

Produce JSON/XML for specified item.

Contrary to h.json request, only fields for specified item are stored

Definition at line 1254 of file TRootSniffer.cxx.

◆ ProduceJson()

Bool_t TRootSniffer::ProduceJson	(	const std::string &	path,
		const std::string &	options,
		std::string &	res
	)

protectedvirtual

Produce JSON data for specified item For object conversion TBufferJSON is used.

Definition at line 1132 of file TRootSniffer.cxx.

◆ ProduceMulti()

Bool_t TRootSniffer::ProduceMulti	(	const std::string &	path,
		const std::string &	options,
		std::string &	str,
		Bool_t	asjson = `kTRUE`
	)

protectedvirtual

Process several requests, packing all results into binary or JSON buffer.

Input parameters should be coded in the POST block and has individual request relative to current path, separated with '
' symbol like item1/root.bin
item2/exe.bin?method=GetList
item3/exe.bin?method=GetTitle
Request requires 'number' URL option which contains number of requested items

In case of binary request output buffer looks like:

4bytes length + payload,
4bytes length + payload, ...

In case of JSON request output is array with results for each item multi.json request do not support binary requests for the items

Definition at line 1340 of file TRootSniffer.cxx.

◆ ProduceRootFile()

Bool_t TRootSniffer::ProduceRootFile	(	const std::string &	path,
		const std::string &	options,
		std::string &	res
	)

protectedvirtual

Produce ROOT file for specified item.

Implemented only in TRootSnifferFull class

Reimplemented in TRootSnifferFull.

Definition at line 1452 of file TRootSniffer.cxx.

◆ ProduceXml()

Bool_t TRootSniffer::ProduceXml	(	const std::string &	path,
		const std::string &	options,
		std::string &	res
	)

protectedvirtual

Produce XML data for specified item.

For object conversion TBufferXML is used Method implemented only in TRootSnifferFull class

Reimplemented in TRootSnifferFull.

Definition at line 1274 of file TRootSniffer.cxx.

◆ RegisterCommand()

Bool_t TRootSniffer::RegisterCommand	(	const char *	cmdname,
		const char *	method,
		const char *	icon
	)

Register command which can be executed from web interface.

As method one typically specifies string, which is executed with gROOT->ProcessLine() method. For instance:

serv->RegisterCommand("Invoke","InvokeFunction()");

Or one could specify any method of the object which is already registered to the server. For instance:

serv->Register("/", hpx);
serv->RegisterCommand("/ResetHPX", "/hpx/->Reset()");

Here symbols '/->' separates item name from method to be executed

One could specify additional arguments in the command with syntax like arg1%, arg2% and so on. For example:

serv->RegisterCommand("/ResetHPX", "/hpx/->SetTitle(\"%arg1%\")");
serv->RegisterCommand("/RebinHPXPY", "/hpxpy/->Rebin2D(%arg1%,%arg2%)");

Such parameter(s) will be requested when command clicked in the browser.

Once command is registered, one could specify icon which will appear in the browser:

serv->SetIcon("/ResetHPX", "rootsys/icons/ed_execute.png");

One also can set extra property '_fastcmd', that command appear as tool button on the top of the browser tree:

serv->SetItemField("/ResetHPX", "_fastcmd", "true");

Or it is equivalent to specifying extra argument when register command:

serv->RegisterCommand("/ResetHPX", "/hpx/->Reset()", "button;rootsys/icons/ed_delete.png");

Definition at line 1884 of file TRootSniffer.cxx.

◆ RegisterObject()

Bool_t TRootSniffer::RegisterObject	(	const char *	subfolder,
		TObject *	obj
	)

Register object in subfolder structure.

Parameters

subfolder

can have many levels like:

TRootSniffer* sniff = new TRootSniffer("sniff");
sniff->RegisterObject("my/sub/subfolder", h1);

Such objects can be later found in "Objects" folder of sniffer like

auto h1 = sniff->FindTObjectInHierarchy("/Objects/my/sub/subfolder/h1");

If subfolder name starts with '/', object will be registered starting from top folder.

One could provide additional fields for registered objects For instance, setting "_more" field to true let browser explore objects members. For instance:

TEvent* ev = new TEvent("ev");
sniff->RegisterObject("Events", ev);
sniff->SetItemField("Events/ev", "_more", "true");

Definition at line 1651 of file TRootSniffer.cxx.

◆ Restrict()

void TRootSniffer::Restrict	(	const char *	path,
		const char *	options
	)

Restrict access to the specified location.

Hides or provides read-only access to different parts of the hierarchy Restriction done base on user-name specified with http requests Options can be specified in URL style (separated with &) Following parameters can be specified:

visible = [all|user(s)] - make item visible for all users or only specified user
hidden = [all|user(s)] - make item hidden from all users or only specified user
readonly = [all|user(s)] - make item read-only for all users or only specified user
allow = [all|user(s)] - make full access for all users or only specified user
allow_method = method(s)  - allow method(s) execution even when readonly flag specified for the object

Like make command seen by all but can be executed only by admin

sniff->Restrict("/CmdReset","allow=admin");

Or fully hide command from guest account

sniff->Restrict("/CmdRebin","hidden=guest");

Definition at line 466 of file TRootSniffer.cxx.

◆ ScanCollection()

void TRootSniffer::ScanCollection	(	TRootSnifferScanRec &	rec,
		TCollection *	lst,
		const char *	foldername = `nullptr`,
		TCollection *	keys_lst = `nullptr`
	)

protected

Scan collection content.

Definition at line 776 of file TRootSniffer.cxx.

◆ ScanHierarchy()

void TRootSniffer::ScanHierarchy	(	const char *	topname,
		const char *	path,
		TRootSnifferStore *	store,
		Bool_t	only_fields = `kFALSE`
	)

Method scans normal objects, registered in ROOT.

scan ROOT hierarchy with provided store object

Definition at line 1001 of file TRootSniffer.cxx.

◆ ScanKeyProperties()

void TRootSniffer::ScanKeyProperties	(	TRootSnifferScanRec &	rec,
		TKey *	key,
		TObject *&	obj,
		TClass *&	obj_class
	)

protectedvirtual

Scans TKey properties in special cases load objects from the file.

Reimplemented in TRootSnifferFull.

Definition at line 741 of file TRootSniffer.cxx.

◆ ScanObjectChilds()

void TRootSniffer::ScanObjectChilds	(	TRootSnifferScanRec &	rec,
		TObject *	obj
	)

protectedvirtual

scans object childs (if any) here one scans collection, branches, trees and so on

Reimplemented in TRootSnifferFull.

Definition at line 761 of file TRootSniffer.cxx.

◆ ScanObjectMembers()

void TRootSniffer::ScanObjectMembers	(	TRootSnifferScanRec &	rec,
		TClass *	cl,
		char *	ptr
	)

protected

scan object data members some members like enum or static members will be excluded

Definition at line 608 of file TRootSniffer.cxx.

◆ ScanObjectProperties()

void TRootSniffer::ScanObjectProperties	(	TRootSnifferScanRec &	rec,
		TObject *	obj
	)

protectedvirtual

Scans object properties here such fields as _autoload or _icon properties depending on class or object name could be assigned By default properties, coded in the Class title are scanned.

Example:

ClassDef(UserClassName, 1) //  class comments *SNIFF*  _field1=value _field2="string value"

Here SNIFF mark is important. After it all expressions like field=value are parsed One could use double quotes to code string values with spaces. Fields separated from each other with spaces

Reimplemented in TRootSnifferFull.

Definition at line 700 of file TRootSniffer.cxx.

◆ ScanRoot()

void TRootSniffer::ScanRoot ( TRootSnifferScanRec & rec )

protectedvirtual

scan complete ROOT objects hierarchy For the moment it includes objects in gROOT directory and list of canvases and files Also all registered objects are included.

One could re-implement this method to provide alternative scan methods or to extend some collection kinds

Definition at line 965 of file TRootSniffer.cxx.

◆ SetAutoLoad()

void TRootSniffer::SetAutoLoad ( const char * scripts = "" )

When specified, _autoload attribute will be always add to top element of h.json/h.hml requests Used to instruct browser automatically load special code.

Definition at line 482 of file TRootSniffer.cxx.

◆ SetCurrentCallArg()

THttpCallArg * TRootSniffer::SetCurrentCallArg ( THttpCallArg * arg )

set current http arguments, which then used in different process methods For instance, if user authorized with some user name, depending from restrictions some objects will be invisible or user get full access to the element Returns previous argument which was set before

Definition at line 435 of file TRootSniffer.cxx.

◆ SetItemField()

Bool_t TRootSniffer::SetItemField	(	const char *	fullname,
		const char *	name,
		const char *	value
	)

Set field for specified item.

Definition at line 1795 of file TRootSniffer.cxx.

◆ SetReadOnly()

void TRootSniffer::SetReadOnly ( Bool_t on = kTRUE )

inline

When readonly on (default), sniffer is not allowed to change ROOT structures For instance, it is not allowed to read new objects from files.

Definition at line 190 of file TRootSniffer.h.

◆ SetScanGlobalDir()

void TRootSniffer::SetScanGlobalDir ( Bool_t on = kTRUE )

inline

When enabled (default), sniffer scans gROOT for files, canvases, histograms.

Definition at line 206 of file TRootSniffer.h.

◆ Streamer()

void TRootSniffer::Streamer ( TBuffer & R__b )

overridevirtual

Stream an object of class TObject.

Reimplemented from TNamed.

◆ StreamerNVirtual()

void TRootSniffer::StreamerNVirtual ( TBuffer & ClassDef_StreamerNVirtual_b )

inline

Definition at line 249 of file TRootSniffer.h.

◆ UnregisterObject()

Bool_t TRootSniffer::UnregisterObject ( TObject * obj )

Unregister (remove) object from folders structures.

Folder itself will remain even when it will be empty

Definition at line 1670 of file TRootSniffer.cxx.

◆ WithCurrentUserName()

Int_t TRootSniffer::WithCurrentUserName ( const char * option )

protected

return 2 when option match to current user name return 1 when option==all return 0 when option does not match user name

Definition at line 512 of file TRootSniffer.cxx.

Member Data Documentation

◆ fAutoLoad

TString TRootSniffer::fAutoLoad

protected

! scripts names, which are add as _autoload parameter to h.json request

Definition at line 129 of file TRootSniffer.h.

◆ fCurrentAllowedMethods

TString TRootSniffer::fCurrentAllowedMethods

protected

! list of allowed methods, extracted when analyzed object restrictions

Definition at line 127 of file TRootSniffer.h.

◆ fCurrentArg

THttpCallArg* TRootSniffer::fCurrentArg {nullptr}

protected

! current http arguments (if any)

Definition at line 125 of file TRootSniffer.h.

◆ fCurrentRestrict

Int_t TRootSniffer::fCurrentRestrict {0}

protected

! current restriction for last-found object

Definition at line 126 of file TRootSniffer.h.

◆ fObjectsPath

TString TRootSniffer::fObjectsPath

protected

! default path for registered objects

Definition at line 121 of file TRootSniffer.h.

◆ fReadOnly

Bool_t TRootSniffer::fReadOnly {kTRUE}

protected

! indicate if sniffer allowed to change ROOT structures - like read objects from file

Definition at line 122 of file TRootSniffer.h.

◆ fRestrictions

TList TRootSniffer::fRestrictions

protected

! list of restrictions for different locations

Definition at line 128 of file TRootSniffer.h.

◆ fScanGlobalDir

Bool_t TRootSniffer::fScanGlobalDir {kTRUE}

protected

! when enabled (default), scan gROOT for histograms, canvases, open files

Definition at line 123 of file TRootSniffer.h.

◆ fTopFolder

std::unique_ptr<TFolder> TRootSniffer::fTopFolder

protected

! own top TFolder object, used for registering objects

Definition at line 124 of file TRootSniffer.h.

Libraries for TRootSniffer:

[legend]

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

net/http/inc/TRootSniffer.h
net/http/src/TRootSniffer.cxx

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Private Types

Additional Inherited Members

Member Enumeration Documentation

◆ anonymous enum

Constructor & Destructor Documentation

◆ TRootSniffer()

◆ ~TRootSniffer()

Member Function Documentation

◆ AccessField()

◆ CallProduceImage()

◆ CanDrawClass()

◆ CanDrawItem()

◆ CanExploreItem()

◆ CheckRestriction()

◆ Class()

◆ Class_Name()

◆ Class_Version()

◆ CreateItem()

◆ CreateOwnTopFolder()

◆ DeclFileName()

◆ DecodeUrlOptionValue()

◆ ExecuteCmd()

◆ FindInHierarchy()

◆ FindTObjectInHierarchy()

◆ GetAutoLoad()

◆ GetItem()

◆ GetItemField() [1/2]

◆ GetItemField() [2/2]

◆ GetItemHash()

◆ GetStreamerInfoHash()

◆ GetSubFolder()

◆ GetTopFolder()

◆ HasRestriction()

◆ HasStreamerInfo()

◆ IsA()

◆ IsItemField()

◆ IsReadOnly()

◆ IsScanGlobalDir()

◆ IsStreamerInfoItem()

◆ Produce()

◆ ProduceBinary()

◆ ProduceExe()

◆ ProduceImage()

◆ ProduceItem()

◆ ProduceJson()

◆ ProduceMulti()

◆ ProduceRootFile()

◆ ProduceXml()

◆ RegisterCommand()

◆ RegisterObject()

◆ Restrict()

◆ ScanCollection()

◆ ScanHierarchy()

◆ ScanKeyProperties()

◆ ScanObjectChilds()

◆ ScanObjectMembers()

◆ ScanObjectProperties()

◆ ScanRoot()

◆ SetAutoLoad()

◆ SetCurrentCallArg()

◆ SetItemField()

◆ SetReadOnly()

◆ SetScanGlobalDir()

◆ Streamer()

◆ StreamerNVirtual()

◆ UnregisterObject()

◆ WithCurrentUserName()

Member Data Documentation

◆ fAutoLoad

◆ fCurrentAllowedMethods

◆ fCurrentArg

◆ fCurrentRestrict

◆ fObjectsPath

◆ fReadOnly

◆ fRestrictions

◆ fScanGlobalDir