+++ /dev/null
-# -*- coding: utf-8 -*-
-############################################################
-# Copyright © 2005-2010 Benoît PIN <benoit.pin@ensmp.fr> #
-# Plinn - http://plinn.org #
-# #
-# This program is free software; you can redistribute it #
-# and/or modify it under the terms of the Creative Commons #
-# "Attribution-Noncommercial 2.0 Generic" #
-# http://creativecommons.org/licenses/by-nc/2.0/ #
-############################################################
-""" Image threaded batch computation module
-"""
-
-import threading
-import logging
-import atexit
-from types import StringTypes
-from math import ceil
-import transaction
-from ZODB.POSException import ConflictError
-from ZODB.POSException import ConnectionStateError
-from zope.site.hooks import setSite
-from cStringIO import StringIO
-
-console = logging.getLogger('[manipulation thread]')
-
-class ImageQueueProcessorThread(threading.Thread) :
- """This thread is started at zope startup
- """
-
- __stopped = False
-
-
- def __init__(self, portal_path, itemsPath) :
- threading.Thread.__init__(self)
- self.portal_path = portal_path
- self.queue = []
- if isinstance(itemsPath, StringTypes) :
- itemsPath = [itemsPath]
- for i in itemsPath :
- self.queueAdd(i)
-
- @property
- def queueSize(self) :
- return len(self.queue)
-
- def queueAdd(self, itemPath) :
- self.queue.append(itemPath)
-
- def run(self) :
- console.info('process started.')
- #atexit.register(self.stop)
- import Zope2
- app = Zope2.app()
- portal = app.unrestrictedTraverse(self.portal_path)
- setSite(portal)
- while not self.__stopped and self.queueSize :
- self._process(app)
-
- con = app._p_jar
- try :
- con.close()
- except ConnectionStateError, e :
- console.warn('ConnectionStateError raised before finished.')
- console.info('process finished.')
-
-
- def stop(self):
- console.info('process stopped.')
- self.__stopped = True
-
- def _process(self, app) :
- path = self.queue.pop(0)
- try :
- p = app.unrestrictedTraverse(path)
- except KeyError :
- console.warn('deleted during processing: %s' % path)
- return
-
- console.info('%d : %s' % (self.queueSize, p.absolute_url()))
-
- try :
- if not hasattr(p, 'thumbnail'):
- p.makeThumbnail()
- # print 'make thumbnail'
-
- for size in ((500, 500), (600, 600), (800, 800)) :
- # print 'resize at', size
- p._getResizedImage(size, True)
- transaction.commit()
-
- zMin = p.tiles_min_zoom
- zMax = p.tiles_max_zoom
- zStep = p.tiles_step_zoom
- levels = range(zMin, zMax + zStep, zStep)
- zooms = [l/100. for l in levels]
- todo = set(zooms) - set(p._tiles.keys())
- if todo :
- if p.tileGenerationLock.locked() :
- console.info('skip %s: already tiling.' % p.absolute_url())
- return
-
- p.tileGenerationLock.acquire()
- zooms = list(todo)
- zooms.sort()
- ppm = None
- try :
- ppm = p._getPPM()
- for zoom in zooms :
-
- # print 'tiling at', zoom
- if zoom < 1 :
- rppm = ppm.resize(ratio=zoom)
- else :
- rppm = ppm
- p._makeTilesAt(zoom, rppm)
- del rppm
- transaction.commit()
- finally :
- del ppm
- p.tileGenerationLock.release()
-
- try :
- delattr(p, '_v__methodResultsCache')
- except AttributeError:
- pass
-
- p.tiles_available = 1
- assert p._getCatalogTool()
- p.reindexObject(idxs=['tiles_available'])
- transaction.commit()
-
- except ConflictError :
- console.warn('Resync after ZODB ConflicError')
- transaction.abort()
- portal = app.unrestrictedTraverse(self.portal_path)
- portal._p_jar.sync()
- self.queueAdd(path)
- return
- except :
- p.tiles_available = -1
- import traceback
- out = StringIO()
- traceback.print_exc(None, out)
- console.error(out.getvalue())