CODEWITHSUNDEEP
pythondjangosubprocess
c.ceti
c.ceti

Reputation: 203

run code if subprocess ends processing

In my django view, i need to send email notification after subprocess is done because the script launched by subprocess is running some commands in background so the email is sent before the script is done, does anyone have an idea about how i could do this ?

My view:

def getor(request):
# process
    subprocess.call("./step1.sh", shell=True)
#send notification
    current_site = get_current_site(request)
    user = User.objects.values('username').order_by('id').last()
    us = user['username']
    subject = 'Notification of endprocess.'
    message = render_to_string('notify.html', {
       'us':us,
       'domain':current_site.domain,
    })
    eml = User.objects.values('email').order_by('id').last()
    toemail = eml['email']
    email = EmailMessage(subject, message, to=[toemail])
    email.send()
    return render(request, 'endexecut.html')

Upvotes: 1

Views: 138

Answers (1)

Swagat
Swagat

Reputation: 632

A quick fix can be put the email send in a function and create a python file. Call it from step1.sh

What I can't understand is, subprocess.call is a blocking function. i.e. until the command in call function doesn't complete, it will not go to next line of code.

I'd go with gevent. Put all the function is gevent spawn. Inside the function call the subprocess first and store the PID. Next code should be a while loop and check if the PID exists. If not the send mail and break the loop. Or else sleep for certain seconds.

Upvotes: 1

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