According to a comment in this question. SAP RFC is GUI capable:
Why is r_data_line_descr of cl_salv_bs_runtime_info=>get_data_ref() not bound?
Where can I find more information about this feature of SAP RFC?
Quoting above comment:
moreover RFC is GUI-capable provided that you select it when you open the RFC connection (activated by default with SAP)
I use PyRFC, but I guess this feature applies to all client implementations of SAP RFC.
Being the author of that comment, let me explain what I meant.
First of all, my comment was in response to "If you call the code by RFC, then there is no GUI connected to the server", if I understand well its meaning, it's wrong if you start the connection with the SAP GUI parameter activated, i.e. it's possible to run a SAP function by RFC which displays a SAP GUI screen (provided that SAP GUI is installed on the client). Otherwise the ABAP code will fail when displaying a screen (SAP GUI not connected).
I didn't find any official documentation for this parameter.
I just know the parameter for these two languages:
In COM/ActiveX, it's the property RfcWithDialog of class SAPLogonCtrl.Connection:
Dim connParam As SAPLogonControl
Dim connHandle As SAPLogonCtrl.Connection
set connParam = New SAPLogonControl
connParam.ApplicationServer = "atlas.XXXXXXXX"
connParam.System = "DK1"
connParam.SystemNumber = 02 'system 00, 01, ...
connParam.client = "100"
connParam.user = "xxxxxx"
connParam.Password = "xxxxxx"
connParam.Language = "EN"
connParam.Enabled = False
Set connHandle = connParam.NewConnection
connHandle.RfcWithDialog = 1
In .NET, it's the property UseSAPGui of class RfcConfigParameters.
PS: I don't think this parameter will help you in your other question.
PyRFC uses the NW RFC library (sapnwrfc.dll) under the hood, and this library supports the same parameter as the COM controls and .NET Connector: USE_SAPGUI
Setting it to "1" attaches a visible Gui to the RFC connection, setting it to "2" attaches an invisible Gui.
However, I'm not familiar with PyRFC, so no idea, whether it's interface also exposes that parameter, or whether there is a way to pass arbitrary sapnwrfc.dll parameters down from Python to the C/C++ layer of sapnwrfc.dll?!
Related
I have a requirement were I need to read ABAP code written by SAP developers. I want to write my own client using Java/Python which can integrate with SAP system and get me the ABAP code.
What I understand that ABAP code is stored in SAP database like HANA, mysql etc. So is there a way which SAP provides where we can read the code like we can do in Git/SVN etc.
I've used RFC calls RPY_FUNCTIONMODULE_READ and RPY_FUNCTIONMODULE_READ_NEW through the perl NWRFC wrapper/library to retreive ABAP code.
You can access tables with below techniques:
Using SAP Connectors via RFC (RFC_READ_TABLE)
Using SOAP Web Service with same function (RFC_READ_TABLE)
Using custom web services with existing functions which are reading report, functions, etc.
You can use both Java or Pyhton for RFC, there is already exits github repo for python.
If you will select reading directly in db table, you need to know structure of saved data. It has own mechanism for OOP objects. Daniel Berlin try to implement binary parser in C++ in sap-reposrc-decompressor project. Never forget this source depended with SAP version.
I think using ADT (ABAP Development Tools) plugin is good for updated systems. There is already Eclipse plugin exists for ADT. ADT not exists in old systems.
If you are planning to use your solution in old system (after 7.01), you can build your own solution with abapGit and custom web services.
NOTE: Keep in mind, report and data elements (variables, tables, types) saved in separate tables. Dynpro objects (screens etc), reports (Smartforms) hard things to decompile.
Before you re-invent a wheel, Take a look at:
ABAPgit. https://docs.abapgit.org/
or the old SAPLink https://wiki.scn.sap.com/wiki/display/ABAP/SAPlink.
If you want JUST the source code, You could expose a very simple rest service/ Endpoint in SAP.
This service would just read the raw code and return it as plain text.
Every abaper could create this for you.
BUT is the raw source only. There is much more to a complete development
and why tools like ABAPGIT exist.
In SICF, create a new endpoint / service.
EG ZCODE_MONKEY with the class below as an example.
Now activate the service.
Call the endpoint
http://server:PORT/zcode_monkey?name=ZCODE_MONKEY
Sample implementation
CLASS zcode_monkey DEFINITION
PUBLIC
CREATE PUBLIC .
PUBLIC SECTION.
INTERFACES: if_http_extension.
ENDCLASS.
CLASS zcode_monkey IMPLEMENTATION.
METHOD if_http_extension~handle_request.
DATA: lo_src type ref to CL_OO_SOURCE,
l_name TYPE string,
l_repname type c length 30,
l_clskey type seoclskey ,
l_source type rswsourcet,
resultcode TYPE string.
FIELD-SYMBOLS: <line> TYPE LINE OF rswsourcet.
l_name = server->request->get_form_field( name = 'NAME' ).
l_clskey = l_name.
l_repname = l_name.
create OBJECT lo_src
EXPORTING
clskey = l_clskey
EXCEPTIONS
class_not_existing = 1
others = 2 .
IF sy-subrc <> 0.
read REPORT l_repname into l_source.
else.
lo_src->read( ).
lo_src->if_oo_clif_source~get_source( IMPORTING source = l_source ).
ENDIF.
LOOP AT l_source ASSIGNING <line>.
CONCATENATE resultCode
cl_abap_char_utilities=>cr_lf
<line>
INTO resultCode RESPECTING BLANKS. " always show respect ;)
ENDLOOP.
SErver->response->set_content_type( content_type = 'text/plain' ).
server->response->set_cdata( EXPORTING data = resultcode ).
server->response->set_status(
EXPORTING
code = 200
reason = 'this is a 3.50 piece of code. Dont ask...its a demo ' ).
ENDMETHOD.
ENDCLASS.
i gain a strange error: 'This feature is not available in the TX Text Control Standard or Professional version. The TX Text Control Enterprise version must be installed.' when I try to save the TXTextControl object with .Save function in .pdfa, .xml and other formats. The error comes when I explicit the StreamType parameter in the .Save function. It seems I have not all the format offered by TXTextControl.
Error comes in this line for example:
TXTextControl.Save(dir, TXTextControl.StreamType.XMLFormat)
or
TXTextControl.Save(dir, TXTextControl.StreamType.AdobePDFA)
I searched online but I can't find references to this error and for TXTextControl enterprise or professional version.
There 's actually different versions of TXTextControl? How can I verify what version I have?
Thanks.
Using TXTextControl.GetVersionInfo().Level should tell you what level you have (as per ProductLevel property)
If you look at the Features page and open up the Supported Formats section under "Features in Detail" then you can see which formats your product level supports.
Up to now I get only an error message if something inside my SAP RFC function is wrong
pyrfc._exception.ABAPRuntimeError: RFC_ABAP_MESSAGE (rc=4): key=No authorization,
message=No authorization [MSG: class=00, type=E, number=001, v1-4:=No authorization;;;]
It would increase the development speed a lot if I could get a stacktrace of ABAP function. Is there a way to get a stacktrace like for example in Python?
Related: https://softwarerecs.stackexchange.com/questions/52350/sentry-event-from-exception-to-html
Sentry uses a particular JSON to represent a stacktrace and the content of the local variables. Above link contains an example.
Stack trace inside ABAP can be called
with the class cl_abap_get_call_stack.
Local variables are not included in the stack trace returned by the class cl_abap_get_call_stack.
But you could use a log-point to monitor local variables and the stack trace. Log-points can be created, changed and viewed in transaction saab.
A example code snippet:
DATA(formatted_stack) =
cl_abap_get_call_stack=>format_call_stack_with_struct(
cl_abap_get_call_stack=>get_call_stack( ) ).
LOG-POINT ID my_log_point FIELDS formatted_stack
local_variable1 local_variable2.
For the authorization-error, please check transaction su53.
When you see the red authorization-object S_RFC, it means you are not allowed to call the function module in any way!
With ABAP 753 release there was introduced such structure as EPP - Extended Passport.
It seems to be doing something that you want, i.e. showing trace of the called system. I put "seems to be" because I have no 753+ system by my hands so I cannot check in practice.
From the description it should do what you want:
An Extended Passport (EPP) is a data structure that can be sent from a client to a server and is used to analyze call stacks
Extended Passport can be used by frameworks and analysis tools to track external call stacks in communication between clients and servers beyond system boundaries. The values of the EPP components can be saved to log files and used for monitoring. One example of this are short dumps, which all display the most important EPP components.
The DEMO_EPP gives the following usage pattern of EPP:
cl_demo_epp=>init( ).
"this program
cl_demo_epp=>append( ).
"Calling RFC to remote instance
CALL FUNCTION 'DEMO_RFM_EPP_1' DESTINATION instance.
"New SAP LUW
CALL FUNCTION 'DEMO_UPDATE_DELETE' IN UPDATE TASK
EXPORTING
values = VALUE demo_update_tab( ).
COMMIT WORK.
cl_demo_epp=>append( ).
cl_demo_output=>new(
)->begin_section( `Extended Passport (EPP)`
)->display( name = 'EPP Trace'
data = cl_demo_epp=>get( ) ).
I'm writing a ZeroBrane Studio plugin for our Solarus Game Engine and It works like a charm. Autocompletion included.
I'm wondering now if it's do-able to register lua APIs for one file only.
I need this to offer autocompletion/documentation on global symbols that may vary per-script but are deducible from annex files from the engine.
To summary : Is it possible to register an api for a single file? For example in the onEditorLoad() event.
Thanks.
Greg
EDIT:
I tried the following without sucess:
local function switch_editor(editor)
if current_editor == editor then
ide:Print("same editor")
return
end
current_editor = editor
if not editor then
ide:Print("null ed")
return
end
lua_file_path = ide:GetDocument(editor).filePath
if lua_file_path:match('/data/maps/') then
ide:Print("map file!",type(editor))
local map_api = make_map_api(lua_file_path)
current_api = map_api
ide:AddAPI('lua','solarus_map',map_api)
else
ide:Print('other file')
if current_api then
ide:RemoveAPI('lua','solarus_map')
current_api = nil
end
end
end
api = {"baselib", "solarus", "solarus_map"}, --in interpreter table
... -- in the plugin table :
onEditorFocusSet = function(self,editor)
switch_editor(editor)
end,
Completion with the solarus api works fine but the on-fly registration of the solarus_map api seem not to be taken in account.
EDIT2:
Silly my, I must have done a typo, because after checking and rewriting some things pretty much as in the code pasted above... it works! Awesome!
The only small gotcha is that when switching to a file where I don't want the solarus_map API... ide:RemoveAPI isn't sufficient. Instead I must do ide:AddAPI('lua','solarus_map',{}) to replace the API with an empty one. Which I can live with.
To summary, to achieve a custom api which change from file to file:
Add the api name to the interpreter
In the onEditorFocusSet event, update the API with ide:AddAPI(...), eventually setting it to {} if it needs to be empty/disabled.
Code sample in the editions of my Question.
I'm working on integrating an experiment in psychopy with the eyelink eyetracking system. The way to do this seems to be through pylink. Unfortunately I'm really unfamiliar with pylink and I was hoping there was a sample of an experiment that combines the two. I haven't been able to find one. If anyone would be able to share an example or point me towards a more accessible manual than the pylink api that sr-research provides I'd be really grateful.
Thanks!
I am glad you found your solution. I have not used iohub, but we do use psychopy and an eyelink and therefore some of the following code may be of use to others who wish to invoke more direct communication. Note that our computers use Archlinux. If none of the following makes any sense to you, don't worry about it, but maybe it will help others who are stumbling along the same path we are.
Communication between experimental machine and eye tracker machine
First, you have to establish communication with the eyelink. If your experimental machine is turned on and plugged into a live Eyelink computer then on linux you have to first set your ethernet card up, and then set the default address that Eyelink uses (this also works for the Eyelink 1000 - they kept the same address). Note your ethernet will probably have a different name than enp4s0. Try simply with ip link and look for something similar. NB: these commands are being typed into a terminal.
#To set up connection with Eyelink II computer:
#ip link set enp4s0 up
#ip addr add 100.1.1.2/24 dev enp4s0
Eyetracker functions
We have found it convenient to write some functions for talking to the Eyelink computer. For example:
Initialize Eyetracker
sp refers to the tuple of screenx, screeny sizes.
def eyeTrkInit (sp):
el = pl.EyeLink()
el.sendCommand("screen_pixel_coords = 0 0 %d %d" %sp)
el.sendMessage("DISPLAY_COORDS 0 0 %d %d" %sp)
el.sendCommand("select_parser_configuration 0")
el.sendCommand("scene_camera_gazemap = NO")
el.sendCommand("pupil_size_diameter = %s"%("YES"))
return(el)
NB: the pl function comes from import pylink as pl. Also, note that there is another python library called pylink that you can find on line. It is probably not the one you want. Go through the Eyelink forum and get pylink from there. It is old, but it still works.
Calibrate Eyetracker
el is the name of the eyetracker object initialized above. sp screen size, and cd is color depth, e.g. 32.
def eyeTrkCalib (el,sp,cd):
pl.openGraphics(sp,cd)
pl.setCalibrationColors((255,255,255),(0,0,0))
pl.setTargetSize(int(sp[0]/70), int(sp[1]/300))
pl.setCalibrationSounds("","","")
pl.setDriftCorrectSounds("","off","off")
el.doTrackerSetup()
pl.closeGraphics()
#el.setOfflineMode()
Open datafile
You can talk to the eye tracker and do things like opening a file
def eyeTrkOpenEDF (dfn,el):
el.openDataFile(dfn + '.EDF')
Drift correction
Or drift correct
def driftCor(el,sp,cd):
blockLabel=psychopy.visual.TextStim(expWin,text="Press the space bar to begin drift correction",pos=[0,0], color="white", bold=True,alignHoriz="center",height=0.5)
notdone=True
while notdone:
blockLabel.draw()
expWin.flip()
if keyState[key.SPACE] == True:
eyeTrkCalib(el,sp,cd)
expWin.winHandle.activate()
keyState[key.SPACE] = False
notdone=False
Sending and getting messages.
There are a number of built-in variables you can set, or you can add your own. Here is an example of sending a message from your python program to the eyelink
eyelink.sendMessage("TRIALID "+str(trialnum))
eyelink.startRecording(1,1,1,1)
eyelink.sendMessage("FIX1")
tFix1On=expClock.getTime()
Gaze contingent programming
Here is a portion of some code that uses the eyelink's most recent sample in the logic of the experimental program.
while notdone:
if recalib==True:
dict['recalib']=True
eyelink.sendMessage("RECALIB END")
eyelink.startRecording(1,1,1,1)
recalib=False
eventType=eyelink.getNextData()
if eventType==pl.STARTFIX or eventType==pl.FIXUPDATE or eventType==pl.ENDFIX:
sample=eyelink.getNewestSample()
if sample != None:
if sample.isRightSample():
gazePos = sample.getRightEye().getGaze()
if sample.isLeftSample():
gazePos = sample.getLeftEye().getGaze()
gazePosCorFix = [gazePos[0]-scrx/2,-(gazePos[1]-scry/2)]
posPix = posToPix(fixation)
eucDistFix = sqrt((gazePosCorFix[0]-posPix[0])**2+(gazePosCorFix[1]-posPix[1])**2)
if eucDistFix < tolFix:
core.wait(timeFix1)
notdone=False
eyelink.resetData()
break
Happy Hacking.
rather than PyLink, you might want to look into using the ioHub system within PsychoPy. This is a more general-purpose eye tracking system that also allows for saving data in a common format (integrated with PsychoPy events), and provides tools for data analysis and visualisation.
ioHUb is built to be agnostic to the particular eye tracker you are using. You just need to create a configuration file specific to your EyeLink system, and thereafter use the generic functions ioHiv provides for calibration, accessing gaze data in real-time, and so on.
There are some teaching resources accessible here: http://www.psychopy.org/resources/ECEM_Python_materials.zip
For future readers, I wanted to share my library for combining pylink and psychopy. I've recently updated it to work with python 3. It provides simple to use, high level functions.
https://github.com/colinquirk/templateexperiments/tree/master/eyelinker
You could also work at a lower level with the PsychoPyCustomDisplay class (see the pylink docs for more info about EyeLinkCustomDisplay).
For an example of it in use, see:
https://github.com/colinquirk/ChangeDetectionEyeTracking
(At the time of writing, this experiment code is not yet python 3 ready, but it should still be a useful example.)
The repo also includes other modules for creating experiments and recording EEG data, but they are not necessary if you are just interested in the eyelinker code.