def request_file(request):
assert request.method == 'POST'
assert 'instructions' in request.POST
assert 'checksum' in request.POST
try:
processor = FileProcessor.objects.get(pk=request.POST['checksum'])
except FileProcessor.DoesNotExist:
processor = FileProcessor(instructions=request.POST['instructions'])
assert processor.get_checksum() == request.POST['checksum']
processor.save()
return HttpResponse(processor.get_output())
def get_output(self):
""" Get the absolute URL for the FileProcessor specified by instructions. """
if ENDPOINT_URL == 'LOCAL':
# No need to cache if running locally
logging.debug('Running processing locally.')
from fileprocessor.models import FileProcessor
processor = FileProcessor(instructions=self.instructions)
return processor.get_output()
else:
# Cache using key fileprocessor-<checksum> if not local
logging.debug('Fetching output from %s', ENDPOINT_URL)
import urllib2
return urllib2.urlopen(ENDPOINT_URL, {'instructions': self.instructions,
'checksum': self.get_checksum()})