You may have solved it by now, but I did play with it a few months ago
and worked out a proof-of-concept file upload monitor application. I
got rid of some paste.progress annoyances with my own Monitor
middleware extending paste.progress.UploadProgressMonitor.
import time
from decimal import Decimal
from paste.progress import _ProgressFile, UploadProgressMonitor,
catch_errors
from paste.progress import ENVIRON_RECEIVED, REQUEST_STARTED,
REQUEST_FINISHED
from pylons.wsgiapp import PylonsBaseWSGIApp
from pylons import config
# testing emulated bandwidth
KBPS = 'progress.kbps'
KBPS_DEFAULT = '28.8'
class ProgressFile(_ProgressFile):
def __init__(self, environ, rfile):
self._ProgressFile_environ = environ
self._ProgressFile_rfile = rfile
if config.get('debug', False):
kbps = config.get(KBPS, KBPS_DEFAULT)
self.bps = Decimal(kbps) * 1024
def readline(self, hint=None):
if hint is None:
hint = -1
chunk = self._ProgressFile_rfile.readline(hint)
if hasattr(self, 'bps'):
time.sleep(len(chunk) / self.bps)
self._ProgressFile_environ[ENVIRON_RECEIVED] += len(chunk)
return chunk
class Monitor(UploadProgressMonitor):
def __call__(self, environ, start_response):
length = environ.get('CONTENT_LENGTH', 0)
if length and int(length) > self.threshold:
# replace input file object
self.monitor.append(environ)
environ[ENVIRON_RECEIVED] = 0
environ[REQUEST_STARTED] = time.time()
environ[REQUEST_FINISHED] = None
environ['wsgi.input'] = ProgressFile(environ,
environ['wsgi.input'])
def finalizer(exc_info=None):
environ[REQUEST_FINISHED] = time.time()
return catch_errors(self.application, environ,
start_response, finalizer, finalizer)
return self.application(environ, start_response)
Never tested with newer releases of Pylons and related dependencies,
but please contact me if you still get errors or want to see the
sample app.
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