Online http server for arbitrary ROOT application.
Idea of THttpServer - provide remote http access to running ROOT application and enable HTML/JavaScript user interface. Any registered object can be requested and displayed in the browser. There are many benefits of such approach:
To start http server simply create instance of the THttpServer class like:
serv = new THttpServer("http:8080");
This will starts civetweb-based http server with http port 8080. Than one should be able to open address "http://localhost:8080" in any modern web browser (Firefox, Chrome, Opera, ...) and browse objects, created in ROOT application. By default, server can access files, canvases and histograms via gROOT
pointer. All such objects can be displayed with JSROOT graphics.
At any time one could register other objects with the command:
TGraph* gr = new TGraph(10); gr->SetName("gr1"); serv->Register("graphs/subfolder", gr);
If objects content is changing in the application, one could enable monitoring flag in the browser - than objects view will be regularly updated.
More information: https://root.cern/root/htmldoc/guides/HttpServer/HttpServer.html
Definition at line 31 of file THttpServer.h.
Public Member Functions | |
THttpServer (const char *engine="http:8080") | |
constructor | |
virtual | ~THttpServer () |
destructor | |
void | AddLocation (const char *prefix, const char *path) |
Add files location, which could be used in the server. | |
Bool_t | CreateEngine (const char *engine) |
Factory method to create different http engines. | |
Bool_t | CreateItem (const char *fullname, const char *title) |
Create item in sniffer. | |
void | CreateServerThread () |
Creates special thread to process all requests, directed to http server. | |
Bool_t | ExecuteHttp (std::shared_ptr< THttpCallArg > arg) |
Execute HTTP request. | |
Bool_t | ExecuteWS (std::shared_ptr< THttpCallArg > &arg, Bool_t external_thrd=kFALSE, Bool_t wait_process=kFALSE) |
Execute WS request. | |
std::shared_ptr< THttpWSHandler > | FindWS (const char *name) |
Find web-socket handler with given name. | |
const char * | GetCors () const |
Returns specified CORS domain. | |
const char * | GetCorsCredentials () const |
Returns specified CORS credentials value - if any. | |
const char * | GetItemField (const char *fullname, const char *name) |
Get item field from sniffer. | |
TRootSniffer * | GetSniffer () const |
returns pointer on objects sniffer | |
const char * | GetTopName () const |
returns name of top item in objects hierarchy | |
Bool_t | Hide (const char *fullname, Bool_t hide=kTRUE) |
Hides folder or element from web gui. | |
TClass * | IsA () const override |
Bool_t | IsAnyEngine () const |
Bool_t | IsCors () const |
Returns kTRUE if CORS was configured. | |
Bool_t | IsCorsCredentials () const |
Returns kTRUE if Access-Control-Allow-Credentials header should be used. | |
Bool_t | IsFileRequested (const char *uri, TString &res) const |
Check if file is requested, thread safe. | |
Bool_t | IsReadOnly () const |
returns read-only mode | |
Bool_t | IsTerminated () const |
returns kTRUE, if server was terminated | |
Bool_t | IsWSOnly () const |
returns true if only websockets are handled by the server | |
Int_t | ProcessRequests () |
Process submitted requests, must be called from appropriate thread. | |
Bool_t | Register (const char *subfolder, TObject *obj) |
Register object in subfolder. | |
Bool_t | RegisterCommand (const char *cmdname, const char *method, const char *icon=nullptr) |
Register command which can be executed from web interface. | |
void | RegisterWS (std::shared_ptr< THttpWSHandler > ws) |
Register WS handler. | |
void | Restrict (const char *path, const char *options) |
Restrict access to specified object. | |
void | SetCors (const std::string &domain="*") |
Enable CORS header to ProcessRequests() responses Specified location (typically "*") add as "Access-Control-Allow-Origin" header. | |
void | SetCorsCredentials (const std::string &value="true") |
Enable/disable usage Access-Control-Allow-Credentials response header. | |
void | SetDefaultPage (const std::string &filename="") |
Set default HTML page. | |
void | SetDrawPage (const std::string &filename="") |
Set drawing HTML page. | |
Bool_t | SetIcon (const char *fullname, const char *iconname) |
Set name of icon, used in browser together with the item. | |
Bool_t | SetItemField (const char *fullname, const char *name, const char *value) |
Set item field in sniffer. | |
void | SetJSROOT (const char *location) |
Set location of JSROOT to use with the server. | |
void | SetReadOnly (Bool_t readonly=kTRUE) |
Set read-only mode for the server (default on) | |
void | SetSniffer (TRootSniffer *sniff) |
Set TRootSniffer to the server. | |
void | SetTerminate () |
set termination flag, no any further requests will be processed | |
void | SetTimer (Long_t milliSec=100, Bool_t mode=kTRUE) |
Create timer which will invoke ProcessRequests() function periodically. | |
void | SetTopName (const char *top) |
set name of top item in objects hierarchy | |
void | SetWSOnly (Bool_t on=kTRUE) |
Set websocket-only mode. | |
void | Streamer (TBuffer &) override |
Stream an object of class TObject. | |
void | StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b) |
Bool_t | SubmitHttp (std::shared_ptr< THttpCallArg > arg, Bool_t can_run_immediately=kFALSE) |
Submit HTTP request. | |
Bool_t | Unregister (TObject *obj) |
Unregister object. | |
void | UnregisterWS (std::shared_ptr< THttpWSHandler > ws) |
Unregister WS handler. | |
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. | |
TClass * | IsA () const override |
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 | Streamer (TBuffer &) override |
Stream an object of class 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 const char * | GetMimeType (const char *path) |
Guess mime type base on file extension. | |
static char * | ReadFileContent (const char *filename, Int_t &len) |
Reads content of file from the disk. | |
static std::string | ReadFileContent (const std::string &filename) |
Reads content of file from the disk, use std::string in return value. | |
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 | |
THttpServer (const THttpServer &)=delete | |
std::string | BuildWSEntryPage () |
Create summary page with active WS handlers. | |
virtual void | MissedRequest (THttpCallArg *arg) |
Method called when THttpServer cannot process request. | |
THttpServer & | operator= (const THttpServer &)=delete |
virtual void | ProcessBatchHolder (std::shared_ptr< THttpCallArg > &arg) |
Process special http request for root_batch_holder.js script. | |
virtual void | ProcessRequest (std::shared_ptr< THttpCallArg > arg) |
Process single http request. | |
void | ReplaceJSROOTLinks (std::shared_ptr< THttpCallArg > &arg) |
Replaces all references like "jsrootsys/...". | |
void | StopServerThread () |
Stop server thread. | |
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 () |
Static Protected Member Functions | |
static Bool_t | VerifyFilePath (const char *fname) |
Checked that filename does not contains relative path below current directory. | |
Protected Attributes | |
std::queue< std::shared_ptr< THttpCallArg > > | fArgs |
! submitted arguments | |
std::string | fCors |
! CORS: sets Access-Control-Allow-Origin header for ProcessRequest responses | |
std::string | fCorsCredentials |
! CORS: add Access-Control-Allow-Credentials: true response header | |
std::string | fDefaultPage |
! file name for default page name | |
std::string | fDefaultPageCont |
! content of default html page | |
std::string | fDrawPage |
! file name for drawing of single element | |
std::string | fDrawPageCont |
! content of draw html page | |
TList | fEngines |
! engines which runs http server | |
TString | fJSROOT |
! location of external JSROOT files | |
TString | fJSROOTSYS |
! location of local JSROOT files | |
std::map< std::string, std::string > | fLocations |
! list of local directories, which could be accessed via server | |
Long_t | fMainThrdId {0} |
! id of the thread for processing requests | |
std::mutex | fMutex |
! mutex to protect list with arguments | |
Bool_t | fOwnThread {kFALSE} |
! true when specialized thread allocated for processing requests | |
Long_t | fProcessingThrdId {0} |
! id of the thread where events are recently processing | |
std::unique_ptr< TRootSniffer > | fSniffer |
! sniffer provides access to ROOT objects hierarchy | |
Bool_t | fTerminated {kFALSE} |
! termination flag, disables all requests processing | |
std::thread | fThrd |
! own thread | |
std::unique_ptr< THttpTimer > | fTimer |
! timer used to access main thread | |
TString | fTopName {"ROOT"} |
! name of top folder, default - "ROOT" | |
std::vector< std::shared_ptr< THttpWSHandler > > | fWSHandlers |
! list of WS handlers | |
std::mutex | fWSMutex |
! mutex to protect WS handler lists | |
Bool_t | fWSOnly {kFALSE} |
! when true, handle only websockets / longpoll engine | |
Protected Attributes inherited from TNamed | |
TString | fName |
TString | fTitle |
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 <THttpServer.h>
|
protecteddelete |
THttpServer::THttpServer | ( | const char * | engine = "http:8080" | ) |
constructor
As argument, one specifies engine kind which should be created like "http:8080". One could specify several engines at once, separating them with semicolon (";"). Following engines are supported:
http - TCivetweb, civetweb-based implementation of http protocol fastcgi - TFastCgi, special protocol for communicating with web servers
For each created engine one should provide socket port number like "http:8080" or "fastcgi:9000". Additional engine-specific options can be supplied with URL syntax like "http:8080?thrds=10". Full list of supported options should be checked in engines docu.
One also can configure following options, separated by semicolon:
readonly, ro - set read-only mode (default) readwrite, rw - allows methods execution of registered objects global - scans global ROOT lists for existing objects (default) noglobal - disable scan of global lists cors - enable CORS header with origin="*" cors=domain - enable CORS header with origin="domain" basic_sniffer - use basic sniffer without support of hist, gpad, graph classes
For example, create http server, which allows cors headers and disable scan of global lists, one should provide "http:8080;cors;noglobal" as parameter
THttpServer uses JavaScript ROOT (https://root.cern/js) to implement web clients UI. Normally JSROOT sources are used from $ROOTSYS/js directory, but one could set JSROOTSYS shell variable to specify alternative location
Definition at line 160 of file THttpServer.cxx.
|
virtual |
void THttpServer::AddLocation | ( | const char * | prefix, |
const char * | path | ||
) |
Add files location, which could be used in the server.
One could map some system folder to the server like
serv->AddLocation("mydir/","/home/user/specials");
Than files from this directory could be addressed via server like http://localhost:8080/mydir/myfile.root
Definition at line 329 of file THttpServer.cxx.
|
protected |
Create summary page with active WS handlers.
Definition at line 811 of file THttpServer.cxx.
|
static |
|
inlinestaticconstexpr |
Definition at line 198 of file THttpServer.h.
Bool_t THttpServer::CreateEngine | ( | const char * | engine | ) |
Factory method to create different http engines.
At the moment two engine kinds are supported:
Examples:
// creates civetweb web server with http port 8080 serv->CreateEngine("http:8080"); serv->CreateEngine("civetweb:8080"); serv->CreateEngine(":8080"); // creates fastcgi server with port 9000 serv->CreateEngine("fastcgi:9000");
One could apply additional parameters, using URL syntax:
serv->CreateEngine("http:8080?thrds=10");
Definition at line 416 of file THttpServer.cxx.
Bool_t THttpServer::CreateItem | ( | const char * | fullname, |
const char * | title | ||
) |
Create item in sniffer.
Definition at line 1355 of file THttpServer.cxx.
void THttpServer::CreateServerThread | ( | ) |
Creates special thread to process all requests, directed to http server.
Should be used with care - only dedicated instance of TRootSniffer is allowed By default THttpServer allows to access global lists pointers gROOT or gFile. To be on the safe side, all kind of such access performed from the main thread. Therefore usage of specialized thread means that no any global pointers will be accessible by THttpServer
Definition at line 512 of file THttpServer.cxx.
|
inlinestatic |
Definition at line 198 of file THttpServer.h.
Bool_t THttpServer::ExecuteHttp | ( | std::shared_ptr< THttpCallArg > | arg | ) |
Execute HTTP request.
Executes http request, specified in THttpCallArg structure.
Method can be called from any thread Actual execution will be done in main ROOT thread, where analysis code is running.
Definition at line 639 of file THttpServer.cxx.
std::shared_ptr< THttpWSHandler > THttpServer::FindWS | ( | const char * | name | ) |
Find web-socket handler with given name.
Search WS handler with given name.
Handler must be registered with RegisterWS() method
Definition at line 1185 of file THttpServer.cxx.
|
inline |
Returns specified CORS domain.
Definition at line 115 of file THttpServer.h.
|
inline |
Returns specified CORS credentials value - if any.
Definition at line 124 of file THttpServer.h.
const char * THttpServer::GetItemField | ( | const char * | fullname, |
const char * | name | ||
) |
Get item field from sniffer.
Definition at line 1371 of file THttpServer.cxx.
|
static |
Guess mime type base on file extension.
Returns MIME type base on file extension.
Definition at line 1379 of file THttpServer.cxx.
|
inline |
returns pointer on objects sniffer
Definition at line 89 of file THttpServer.h.
|
inline |
returns name of top item in objects hierarchy
Definition at line 130 of file THttpServer.h.
Hides folder or element from web gui.
Definition at line 1336 of file THttpServer.cxx.
|
inlineoverridevirtual |
Reimplemented from TObject.
Definition at line 198 of file THttpServer.h.
|
inline |
Definition at line 86 of file THttpServer.h.
|
inline |
Returns kTRUE if CORS was configured.
Definition at line 112 of file THttpServer.h.
|
inline |
Returns kTRUE if Access-Control-Allow-Credentials header should be used.
Definition at line 121 of file THttpServer.h.
Check if file is requested, thread safe.
Verifies that request is just file name.
File names typically contains prefix like "jsrootsys/" If true, method returns real name of the file, which should be delivered to the client Method is thread safe and can be called from any thread
Definition at line 609 of file THttpServer.cxx.
Bool_t THttpServer::IsReadOnly | ( | ) | const |
returns read-only mode
Definition at line 282 of file THttpServer.cxx.
|
inline |
returns kTRUE, if server was terminated
Definition at line 105 of file THttpServer.h.
Bool_t THttpServer::IsWSOnly | ( | ) | const |
returns true if only websockets are handled by the server
Typically used by WebGui
Definition at line 304 of file THttpServer.cxx.
|
protectedvirtual |
Method called when THttpServer cannot process request.
By default such requests replied with 404 code One could overwrite with method in derived class to process all kinds of such non-standard requests
Definition at line 787 of file THttpServer.cxx.
|
protecteddelete |
|
protectedvirtual |
Process special http request for root_batch_holder.js script.
This kind of requests used to hold web browser running in headless mode Intentionally requests does not replied immediately
Definition at line 798 of file THttpServer.cxx.
|
protectedvirtual |
Process single http request.
Depending from requested path and filename different actions will be performed. In most cases information is provided by TRootSniffer class
Definition at line 886 of file THttpServer.cxx.
Int_t THttpServer::ProcessRequests | ( | ) |
Process submitted requests, must be called from appropriate thread.
Process requests, submitted for execution.
Returns number of processed requests
Normally invoked by THttpTimer, when somewhere in the code gSystem->ProcessEvents() is called. User can call serv->ProcessRequests() directly, but only from main thread. If special server thread is created, called from that thread
Definition at line 707 of file THttpServer.cxx.
|
static |
Reads content of file from the disk.
Reads file content.
Definition at line 1457 of file THttpServer.cxx.
|
static |
Reads content of file from the disk, use std::string in return value.
Reads file content, using std::string as container.
Definition at line 1483 of file THttpServer.cxx.
Register object in subfolder.
Register object in folders hierarchy.
See TRootSniffer::RegisterObject() for more details
Definition at line 1143 of file THttpServer.cxx.
Bool_t THttpServer::RegisterCommand | ( | const char * | cmdname, |
const char * | method, | ||
const char * | icon = nullptr |
||
) |
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 1328 of file THttpServer.cxx.
void THttpServer::RegisterWS | ( | std::shared_ptr< THttpWSHandler > | ws | ) |
Register WS handler.
Register WS handler to the THttpServer.
Only such handler can be used in multi-threaded processing of websockets
Definition at line 1163 of file THttpServer.cxx.
|
protected |
Replaces all references like "jsrootsys/...".
Either using pre-configured JSROOT installation from web or redirect to jsrootsys from the main server path to benefit from browser caching
Definition at line 845 of file THttpServer.cxx.
void THttpServer::Restrict | ( | const char * | path, |
const char * | options | ||
) |
Restrict access to specified object.
See TRootSniffer::Restrict() for more details
Definition at line 1286 of file THttpServer.cxx.
|
inline |
Enable CORS header to ProcessRequests() responses Specified location (typically "*") add as "Access-Control-Allow-Origin" header.
Definition at line 109 of file THttpServer.h.
|
inline |
Enable/disable usage Access-Control-Allow-Credentials response header.
Definition at line 118 of file THttpServer.h.
void THttpServer::SetDefaultPage | ( | const std::string & | filename = "" | ) |
Set default HTML page.
Sets file name, delivered by the server when http address is opened in the browser.
By default, $ROOTSYS/js/files/online.htm page is used When empty filename is specified, default page will be used
Definition at line 365 of file THttpServer.cxx.
void THttpServer::SetDrawPage | ( | const std::string & | filename = "" | ) |
Set drawing HTML page.
Set file name of HTML page, delivered by the server when objects drawing page is requested from the browser By default, $ROOTSYS/js/files/draw.htm page is used When empty filename is specified, default page will be used
Definition at line 384 of file THttpServer.cxx.
Bool_t THttpServer::SetIcon | ( | const char * | fullname, |
const char * | iconname | ||
) |
Set name of icon, used in browser together with the item.
One could use images from $ROOTSYS directory like: serv->SetIcon("/ResetHPX","/rootsys/icons/ed_execute.png");
Definition at line 1347 of file THttpServer.cxx.
Bool_t THttpServer::SetItemField | ( | const char * | fullname, |
const char * | name, | ||
const char * | value | ||
) |
Set item field in sniffer.
Definition at line 1363 of file THttpServer.cxx.
void THttpServer::SetJSROOT | ( | const char * | location | ) |
Set location of JSROOT to use with the server.
One could specify address like:
This allows to get new JSROOT features with old server, reduce load on THttpServer instance, also startup time can be improved When empty string specified (default), local copy of JSROOT is used (distributed with ROOT)
Definition at line 352 of file THttpServer.cxx.
Set read-only mode for the server (default on)
In read-only server is not allowed to change any ROOT object, registered to the server Server also cannot execute objects method via exe.json request
Definition at line 293 of file THttpServer.cxx.
void THttpServer::SetSniffer | ( | TRootSniffer * | sniff | ) |
Set TRootSniffer to the server.
Server takes ownership over sniffer
Definition at line 264 of file THttpServer.cxx.
void THttpServer::SetTerminate | ( | ) |
set termination flag, no any further requests will be processed
Set termination flag,.
No any further requests will be processed, server only can be destroyed afterwards
Definition at line 274 of file THttpServer.cxx.
Create timer which will invoke ProcessRequests() function periodically.
Timer is required to perform all actions in main ROOT thread Method arguments are the same as for TTimer constructor By default, sync timer with 100 ms period is created
It is recommended to always use sync timer mode and only change period to adjust server reaction time. Use of async timer requires, that application regularly calls gSystem->ProcessEvents(). It happens automatically in ROOT interactive shell. If milliSec == 0, no timer will be created. In this case application should regularly call ProcessRequests() method.
Async timer allows to use THttpServer in applications, which does not have explicit gSystem->ProcessEvents() calls. But be aware, that such timer can interrupt any system call (like malloc) and can lead to dead locks, especially in multi-threaded applications.
Definition at line 487 of file THttpServer.cxx.
|
inline |
set name of top item in objects hierarchy
Definition at line 127 of file THttpServer.h.
Set websocket-only mode.
If true, server will only handle websockets connection plus serving file requests to access jsroot/ui5 scripts
Definition at line 315 of file THttpServer.cxx.
|
protected |
Stop server thread.
Normally called shortly before http server destructor
Definition at line 544 of file THttpServer.cxx.
|
overridevirtual |
|
inline |
Definition at line 198 of file THttpServer.h.
Bool_t THttpServer::SubmitHttp | ( | std::shared_ptr< THttpCallArg > | arg, |
Bool_t | can_run_immediately = kFALSE |
||
) |
Submit HTTP request.
Submit http request, specified in THttpCallArg structure.
Contrary to ExecuteHttp, it will not block calling thread. User should implement THttpCallArg::HttpReplied() method to react when HTTP request is executed. Method can be called from any thread Actual execution will be done in main ROOT thread, where analysis code is running. When called from main thread and can_run_immediately==kTRUE, will be executed immediately.
Returns kTRUE when was executed.
Definition at line 678 of file THttpServer.cxx.
Unregister object.
Unregister object in folders hierarchy.
See TRootSniffer::UnregisterObject() for more details
Definition at line 1153 of file THttpServer.cxx.
void THttpServer::UnregisterWS | ( | std::shared_ptr< THttpWSHandler > | ws | ) |
Unregister WS handler.
Unregister WS handler to the THttpServer.
Definition at line 1172 of file THttpServer.cxx.
|
staticprotected |
Checked that filename does not contains relative path below current directory.
Used to prevent access to files below current directory
Definition at line 559 of file THttpServer.cxx.
|
protected |
! submitted arguments
Definition at line 58 of file THttpServer.h.
|
protected |
! CORS: sets Access-Control-Allow-Origin header for ProcessRequest responses
Definition at line 54 of file THttpServer.h.
|
protected |
! CORS: add Access-Control-Allow-Credentials: true response header
Definition at line 55 of file THttpServer.h.
|
protected |
! file name for default page name
Definition at line 50 of file THttpServer.h.
|
protected |
! content of default html page
Definition at line 51 of file THttpServer.h.
|
protected |
! file name for drawing of single element
Definition at line 52 of file THttpServer.h.
|
protected |
! content of draw html page
Definition at line 53 of file THttpServer.h.
|
protected |
! engines which runs http server
Definition at line 34 of file THttpServer.h.
|
protected |
! location of external JSROOT files
Definition at line 46 of file THttpServer.h.
|
protected |
! location of local JSROOT files
Definition at line 44 of file THttpServer.h.
|
protected |
! list of local directories, which could be accessed via server
Definition at line 48 of file THttpServer.h.
|
protected |
! id of the thread for processing requests
Definition at line 38 of file THttpServer.h.
|
protected |
! mutex to protect list with arguments
Definition at line 57 of file THttpServer.h.
! true when specialized thread allocated for processing requests
Definition at line 40 of file THttpServer.h.
|
protected |
! id of the thread where events are recently processing
Definition at line 39 of file THttpServer.h.
|
protected |
! sniffer provides access to ROOT objects hierarchy
Definition at line 36 of file THttpServer.h.
! termination flag, disables all requests processing
Definition at line 37 of file THttpServer.h.
|
protected |
! own thread
Definition at line 41 of file THttpServer.h.
|
protected |
! timer used to access main thread
Definition at line 35 of file THttpServer.h.
|
protected |
! name of top folder, default - "ROOT"
Definition at line 45 of file THttpServer.h.
|
protected |
! list of WS handlers
Definition at line 61 of file THttpServer.h.
|
protected |
! mutex to protect WS handler lists
Definition at line 60 of file THttpServer.h.
! when true, handle only websockets / longpoll engine
Definition at line 42 of file THttpServer.h.