ckanext-googleanalytics_v2..../ckanext/googleanalytics/plugin.py

95 lines
3.5 KiB
Python

import logging
import urllib
import os
from paste.deploy.converters import asbool
from genshi.filters import Transformer
from genshi import HTML
from genshi.core import START, TEXT, END
from genshi.filters.transform import INSIDE, EXIT
from pylons import config
from ckan.plugins import implements, SingletonPlugin
from ckan.plugins import IGenshiStreamFilter, IConfigurable, IRoutes
from ckan.plugins import IConfigurer
from gasnippet import gacode
from commands import DEFAULT_RESOURCE_URL_TAG
import dbutil
log = logging.getLogger('ckanext.googleanalytics')
class GoogleAnalyticsException(Exception):
pass
class GoogleAnalyticsPlugin(SingletonPlugin):
implements(IConfigurable, inherit=True)
implements(IGenshiStreamFilter, inherit=True)
implements(IRoutes, inherit=True)
implements(IConfigurer, inherit=True)
def configure(self, config):
self.config = config
log.info("Loading Google Analytics plugin...")
if (not 'googleanalytics.id' in config):
msg = "Missing googleanalytics.id in config"
raise GoogleAnalyticsException(msg)
def filter(self, stream):
log.info("Inserting GA code into template")
ga_id = self.config['googleanalytics.id']
code = HTML(gacode % ga_id)
stream = stream | Transformer('head').append(code)
resource_url = config.get('googleanalytics.resource_prefix',
DEFAULT_RESOURCE_URL_TAG)
show_downloads = asbool(config.get('googleanalytics.show_downloads',
False))
# add download tracking link
def js_attr(name, event):
attrs = event[1][1]
link = '%s%s' % (resource_url,
urllib.quote(attrs.get('href')))
js = "javascript: _gaq.push(['_trackPageview', '%s']);" % link
return js
# add some stats
def download_adder(stream):
download_html = ''' <span class="downloads-count">
(%s downloads)</span>'''
count = None
for mark, (kind, data, pos) in stream:
if mark and kind == START:
href = data[1].get('href')
if href:
count = dbutil.get_resource_visits_for_url(href)
if count and mark is EXIT:
# emit count
yield INSIDE, (TEXT,
HTML(download_html % count),
pos)
yield mark, (kind, data, pos)
# perform the stream transform
stream = stream | Transformer(
'//div[@id="package"]//td/a')\
.attr('onclick', js_attr)
if show_downloads:
stream = stream | Transformer(
'//div[@id="package"]//td/a')\
.apply(download_adder)
return stream
def after_map(self, map):
map.connect('analytics', '/analytics/package/top',
controller='ckanext.googleanalytics.controller:GAController',
action='view')
return map
def update_config(self, config):
here = os.path.dirname(__file__)
rootdir = os.path.dirname(os.path.dirname(here))
template_dir = os.path.join(rootdir, 'ckanext',
'googleanalytics', 'templates')
config['extra_template_paths'] = ','.join([template_dir,
config.get('extra_template_paths', '')])