I have banged my head against the wall on this for days now, I need help.
I’m trying to create a geoprocessing service (which will be used via a flex viewer) that takes permit information from a GDB, writes it to a file, and then opens it on the user’s computer.
The script I have written works perfectly on local computers and when run from the server itself.
However, as soon as the script has been published as a geoprocessing service, it stops opening the file.
The file is created out on a webserver, and then opened via url so that the user can then make a local copy, print out for signature, etc. The file is still being created, named, and placed in the proper folder, it just isn’t being opened at end of the process. (The GP Service views as completed though, it doesn’t fail)
Here is the end of the code, which is the part relevant to my issue:
f = open(r'\\MyWebAddressHere\\Reports\\Permit' + str(PermitNumber) +'.html','w')
f.write(permitStart)
if (BasePermitFee > 0):
f.write(permitBaseFee)
if (PlumbingFee > 0):
f.write(permitPlumbingFee)
if (ElectricFee > 0):
f.write(permitElectricFee)
if (TotalFees > 0):
f.write(permitTotalFee)
f.write(permitEnd)
f.close()
webbrowser.open('MyWebAddressHere/Reports/Permit' + str(PermitNumber) +'.html')
Does anyone have a suggestion on why the open is failing once the GP service is published?
I don't see this as a bug - the webbrowser command makes no sense in the context of a GP Service. Think about what's being executed where.
If you run the code locally, Python is running on your actual computer - that computer has a login, a display, a set of installed programs. Telling it to open a web browser makes sense because you have one or more browsers installed on that computer.
Run it on the server, while logged into the server, and same thing - you still have a login, a set of installed programs. While you might lock down a server to reduce its vulnerability, it probably still has at least one program installed that is capable of browsing the internet.
But when you run a script as a GP Tool, you're in a different world. You're not running the code locally, and you're not logged into the server. If you execute the webbrowser command, where should it open the browser window?
On your PC? It can't - the server's GP environment can't execute random programs on your PC, that would be a massive security hole. Hey, I'll write a script that deletes everything in C:\Windows and publish it on ArcGIS Online!
On the server? Who would see it? No one's logged in.
Turns out that the webbrowser command flat out does not work in a server environment.
I managed to confuse the heck out of an ESRI server analyst with this one, because there is apparently no documentation saying this won't work in a server environment, it just doesn't. So it has been logged as a bug.
Related
I have a script in python whose purpose is to make sure that a particular application that continuously download data from internet stays up all the time. If the application crashes, the script brings it back up.
Since the system is in Windows, I modified the script into a service, so that even if windows restarts itself, the service will ensure that the application is up even if the user is not logged in.
The service was installed using an account that has admin permissions. The system seems to work fine except that the application that is successfully brought up is not connecting to internet (The application writes log file, so we can be sure that it started fine). Faces the same issue if the user is changed to Network Service or Local System
So I was wondering if there are any permissions required to help it connect to internet (or is this not possible at all).
You probably need to specify an account that can run the application normally on the service's Log On tab (of the Services.msc control panel application):
Additional details in the Windows Services FAQ.
I have a Python Script, which uses win32com.client.dispatch and redemption in order to connect to an instance of Outlook and harvest some data from a public folder.
When I execute this script on command line it works just fine.
Adding it as a scheduled task, it appears to get hung at the line Outlook = win32com
I added Event Log statements along the way to see where it is getting hung, other than that I don't have much in the way of error logs (since it doesnt actually fail)
Is there any sort of security settings I should be concerned about or anything I am not thinking of? Everything works fine with a standard python call in the CMD.
Scheduler runs as a service, and office apps (Outlook included) should nto be used in a service.
I have coded a Python Script for Twitter Automation using Tweepy. Now, when i run on my own Linux Machine as python file.py The file runs successfully and it keeps on running because i have specified repeated Tasks inside the Script and I also don't want to stop the script either. But as it is on my Local Machine, the script might get stopped when my Internet Connection is off or at Night. So i couldn't keep running the Script Whole day on my PC..
So is there any way or website or Method where i could deploy my Script and make it Execute forever there ? I have heard about CRON JOBS before in Cpanel which can Help repeated Tasks but here in my case i want to keep running my Script on the Machine till i don't close the script .
Are their any such solutions. Because most of twitter bots i see are running forever, meaning their Script is getting executed somewhere 24x7 . This is what i want to know, How is that Task possible?
As mentioned by Jon and Vincent, it's better to run the code from a cloud service. But either way, I think what you're looking for is what to put into the terminal to run the code even after you close the terminal. This is what worked for me:
nohup python code.py &
You can add a systemd .service file, which can have the added benefit of:
logging (compressed logs at a central place, or over network to a log server)
disallowing access to /tmp and /home-directories
restarting the service if it fails
starting the service at boot
setting capabilities (ref setcap/getcap), disallowing file access if the process only needs network access, for instance
The idea:
There is a Node.JS server which sends a request to the IIS server which is running Django / Python. It will send two files to the server which need to be converted with a program which needs to be run in the foreground mode.
So I already looked around in pretty much everything related to IIS and the running of executables here on SO, but still haven't got it working.
I got the following code to run the application from Django:
subprocess.call("C:\example.exe")
There will be probably be some serious security issues (although the server is only reachable from the local network) with the following setup, but here it is:
I'm running a Django application on IIS.
I've set the Application Pool Identity to my local user
I've given "Full Control" permission to "Everyone"
When the subprocess call gets executed it will add the program to my Background Processes with the USER being set to my local user.
Questions:
How do I make the program start in Desktop Mode?
Should I perhaps add another step (start another service) which will then start the program?
Edit:
Could I perhaps make a file watcher which watches if files get stored on the Windows Server and then triggers an executable based on that?
I'm looking to use a local webserver to run a series of python scripts for the user. For various unavoidable reasons, the python script must run locally, not on a server. As a result, I'll be using HTML+browser as the UI, which I'm comfortable with, for the front end.
I've been looking, therefore, for a lightweight web server that can execute python scripts, sitting in the background on a machine, ideally as a Windows service. Security and extensibility are not high priorities as it's all running internally on a small network.
Should I run a native python webserver as a Windows service (in which case, how)? Or is it just as easy to install Apache onto the user's machine and run as CGI? Since this is all local, performance is not an issue either.
Or am I missing something obvious?
Don't waste a lot of time creating Windows service.
Don't waste a lot of time on Windows Apache.
Just make a Python service that responds to HTTP requests.
Look at https://docs.python.org/2/library/basehttpserver.html
https://docs.python.org/3/library/http.server.html for version 3
Python offers an HTTP server that you can extend with your server-side methods.
Look at http://docs.python.org/library/wsgiref.html
Python offers a WSGI reference implementation that makes your server easy and standards-compliant.
Also http://fragments.turtlemeat.com/pythonwebserver.php
"I'm trying to avoid making the user run python stuff from the command prompt."
I don't see how clicking a web page is any different from clicking desktop icons.
Starting a web server based on Python is relatively easy, once you have the web server. First, build the server. Later, you can make sure the server starts. Let's look at some ways.
Your user can't use a random browser to open your local page. They need a bookmark to launch "localhost:8000/myspecialserverinsteadofthedestop/" That bookmark can be a .BAT file that (1) runs the server, (2) runs firefox with the proper initial URL.
You can put the server in the user's start-this menu.
You can make your Python program a windows "service".
Best way is to make your own local server by using command prompt.
Make a new folder say Project
Make a new folder inside project & name it as "cgi-bin"(without quotes)
Paste your .py file inside the cgi-bin folder
Open cmd and change to the directory from which you want to run the server and type "python -m CGIHTTPServer"(without quotes)
Minimize the cmd window & open your browser and type "localhost:8000/cgi-bin/yourpythonfilename.py"(without quotes).
The wasiest step would be navigate to folder where your files are located and running http.server module
cd /yourapp
python3 -m http.server
the you should see something like this in console
Serving HTTP on 0.0.0.0 port 8000 (http://0.0.0.0:8000/) ...
Running a native python webserver as a windows service should be a no brainer. Check out the documentation for writing windows services (win32api, ActiveState python) in python and also the documentation for subclassing BaseHttpServer and SimpleHttpServer.
BTW: I had a similar question on stackoverflow: How to stop BaseHTTPServer.serve_forever() in a BaseHTTPRequestHandler subclass?
Basically, you subclass BaseHTTPServer (you have to anyway...) and then... but just read the accepted answer - it set me on the right track!