server.py
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#!/usr/bin/env python
import web
from web import form
import tempfile
import sys
import simplejson as json
import apt
sys.path.insert(0,"../")
from config import *
from recommender import *
from user import *
import urllib
class RequestForm(form.Form):
def __init__(self):
form.Form.__init__(self, \
form.File("pkgs_file", size=35, description="Upload file"),
form.Textarea("pkgs_list", description="Packages",
rows="4", cols="52"),
form.Dropdown('limit', [(5, '05'), (10, '10'), (20, '20')],
description = "Limit"),
form.Checkbox("strategy_cb", value=1, checked=False,
description="Content-based"),
form.Checkbox("strategy_col", value=1, checked=False,
description="Collaborative"),
form.Checkbox("strategy_hybrid", value="True", checked=False,
description="Hybrid"),
form.Checkbox("strategy_hybrid_plus", value="True", checked=False,
description="Hybrid plus"),
validators = [form.Validator("No packages list provided.",
lambda f: f.has_key("pkgs_list") |
f.has_key("pkgs_file") ),
form.Validator("No strategy selected.",
lambda f: f.has_key("strategy_cb") |
f.has_key("startegy_col") |
f.has_key("strategy_hybrid") |
f.has_key("strategy_hybrid_plus")) ])
class FeedbackForm(form.Form):
def __init__(self,strategies):
desc_dict = {"cta": "Content-based", "col": "Collaborative",
"hybrid": "Hybrib", "hybrid_plus": "Hybrid Plus"}
fields = []
for strategy in strategies:
fields.append(form.Radio(desc_dict[strategy],
[('1','1 '),('2','2 '),('3','3'),('4','4 '),('5','5')]))
form.Form.__init__(self, *fields, validators = [])
class Index:
def GET(self):
return render.index("/apprec", "post", RequestForm())
class Thanks:
def POST(self):
return render.thanks()
class Package:
def GET(self, pkg):
json_source = "http://dde.debian.net/dde/q/udd/packages/all/%s?t=json" % pkg #FIXME: url goes to config
json_data = json.load(urllib.urlopen(json_source))
# parsing tags:
tags = self._debtags_list_to_dict(json_data['r']['tag'])
json_data['r']['tag'] = tags
# formatting long description
json_data['r']['long_description'] = json_data['r']['long_description'].replace(' .\n','').replace('\n','<br />')
return render_plain.package(json_data['r'])
def _debtags_list_to_dict(self, debtags_list):
""" in:
['use::editing',
'works-with-format::gif',
'works-with-format::jpg',
'works-with-format::pdf']
out:
{'use': [editing],
'works-with-format': ['gif', 'jpg', 'pdf']'
}
"""
debtags = {}
subtags = []
for tag in debtags_list:
match = re.search(r'^(.*)::(.*)$', tag)
if not match:
log.error("Could not parse debtags format from tag: %s", tag)
facet, subtag = match.groups()
subtags.append(subtag)
if facet not in debtags:
debtags[facet] = subtags
else:
debtags[facet].append(subtag)
subtags = []
return debtags
class AppRecommender:
def POST(self):
outputdir = tempfile.mkdtemp(prefix='',dir='./submissions/')
user_id = outputdir.lstrip('./submissions/')
request = RequestForm()
request_info = web.input(pkgs_file={})
if not request.validates(request_info):
return render.error(request)
else:
user_pkgs_list = []
if request_info.has_key('pkgs_list'):
user_pkgs_list = request_info['pkgs_list'].encode('utf8').split()
print user_pkgs_list
if request_info['pkgs_file'].value:
f = open(outputdir + "/packages_list", "wb")
lines = request_info['pkgs_file'].file.readlines()
print lines
if lines[0].startswith('POPULARITY-CONTEST'):
del lines[0]
del lines[-1]
package_name_field = 2
else:
package_name_field = 0
for line in lines:
user_pkgs_list.append(line.split()[package_name_field])
f.write(line)
f.close()
strategies = []
if request_info.has_key('strategy_cb'): strategies.append("cta")
### Colaborative strategies can not go online yet
if request_info.has_key('strategy_col'): strategies.append("col")
if request_info.has_key('strategy_hybrid'):
strategies.append("hybrid")
if request_info.has_key('strategy_hybrid_plus'):
strategies.append("hybrid_plus")
recommends = self._recommends(user_id,user_pkgs_list,strategies, int(request_info['limit']))
### Getting package summary (short description) ###
pkg_summaries = {}
cache = apt.Cache()
for strategy, result in recommends.items():
for pkg in result:
pkg_summaries[pkg] = cache[pkg].candidate.summary
return render.apprec(recommends, pkg_summaries, FeedbackForm(strategies))
# parsing json from screenshots - can be usefull in the future...
# def _packages_attrs(self, recommends): #recommends is result of _recommends()
# all_recommended_packages = []
# recommended_pkgs_attrs = {}
# json_file_path = 'static/json/screenshots.json' #FIXME: go to config file
# json_file = open(json_file_path)
# json_data = json.load(json_file)
# for strategy, result in recommends.items():
# all_recommended_packages.extend(result)
# for pkg_attrs_dict in json_data['screenshots']:
# if pkg_attrs_dict['name'] in all_recommended_packages:
# recommended_pkgs_attrs[pkg_attrs_dict['name']] = pkg_attrs_dict
# return recommended_pkgs_attrs
def _recommends(self,user_id,user_pkgs_list,strategies,limit):
user = User(dict.fromkeys(user_pkgs_list,1),user_id)
user.maximal_pkg_profile()
cfg = Config()
rec = Recommender(cfg)
results = dict()
for strategy in strategies:
### Colaborative strategies can not go online yet
#eval("rec."+strategy+"(cfg)")
rec.cta(cfg)
prediction = rec.get_recommendation(user).get_prediction(limit)
results[rec.strategy.description] = \
[result[0] for result in prediction]
return results
def add_global_hook():
g = web.storage({"counter": "1"})
def _wrapper(handler):
web.ctx.globals = g
return handler()
return _wrapper
render = web.template.render('templates/', base='layout')
render_plain = web.template.render('templates/')
urls = ('/', 'Index',
'/apprec', 'AppRecommender',
'/thanks', 'Thanks',
'/package/(.*)', 'Package'
)
web.webapi.internalerror = web.debugerror
if __name__ == "__main__":
apprec = web.application(urls, globals())
apprec.add_processor(add_global_hook())
apprec.run()