Files
CouchPotatoServer/couchpotato/core/plugins/base.py
T
2011-09-11 00:58:26 +02:00

160 lines
4.8 KiB
Python

from couchpotato import addView
from couchpotato.core.event import fireEvent, addEvent
from couchpotato.core.helpers.variable import getExt
from couchpotato.core.logger import CPLog
from couchpotato.environment import Env
from flask.helpers import send_from_directory
from libs.multipartpost import MultipartPostHandler
from urlparse import urlparse
import cookielib
import glob
import math
import os.path
import re
import socket
import time
import urllib
import urllib2
log = CPLog(__name__)
class Plugin(object):
enabled_option = 'enabled'
auto_register_static = True
needs_shutdown = False
running = []
http_last_use = {}
http_time_between_calls = 0
def registerPlugin(self):
addEvent('app.shutdown', self.doShutdown)
addEvent('plugin.running', self.isRunning)
def conf(self, attr, default = None):
return Env.setting(attr, self.getName().lower(), default = default)
def getName(self):
return self.__class__.__name__
def registerStatic(self, plugin_file, add_to_head = True):
# Register plugin path
self.plugin_path = os.path.dirname(plugin_file)
# Get plugin_name from PluginName
s1 = re.sub('(.)([A-Z][a-z]+)', r'\1_\2', self.__class__.__name__)
class_name = re.sub('([a-z0-9])([A-Z])', r'\1_\2', s1).lower()
path = 'static/' + class_name + '/'
addView(path + '<path:file>', self.showStatic, static = True)
if add_to_head:
for f in glob.glob(os.path.join(self.plugin_path, 'static', '*')):
fireEvent('register_%s' % ('script' if getExt(f) in 'js' else 'style'), path + os.path.basename(f))
def showStatic(self, file = ''):
d = os.path.join(self.plugin_path, 'static')
return send_from_directory(d, file)
def createFile(self, path, content):
self.makeDir(os.path.dirname(path))
try:
f = open(path, 'w')
f.write(content)
f.close()
except Exception, e:
log.error('Unable writing to file "%s": %s' % (path, e))
def makeDir(self, path):
try:
if not os.path.isdir(path):
os.makedirs(path, Env.getPermission('folder'))
return True
except Exception, e:
log.error('Unable to create folder "%s": %s' % (path, e))
return False
# http request
def urlopen(self, url, timeout = 10, params = {}, headers = {}, multipart = False):
socket.setdefaulttimeout(timeout)
host = urlparse(url).hostname
self.wait(host)
try:
if multipart:
log.info('Opening multipart url: %s, params: %s' % (url, params.iterkeys()))
request = urllib2.Request(url, params, headers)
cookies = cookielib.CookieJar()
opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cookies), MultipartPostHandler)
data = opener.open(request).read()
else:
log.info('Opening url: %s, params: %s' % (url, params))
data = urllib.urlencode(params) if len(params) > 0 else None
request = urllib2.Request(url, data, headers)
data = urllib2.urlopen(request).read()
except IOError, e:
log.error('Failed opening url, %s: %s' % (url, e))
raise
self.http_last_use[host] = time.time()
return data
def wait(self, host = ''):
now = time.time()
last_use = self.http_last_use.get(host, 0)
wait = math.ceil(last_use - now + self.http_time_between_calls)
if wait > 0:
log.debug('Waiting for %s, %d seconds' % (self.getName(), wait))
time.sleep(last_use - now + self.http_time_between_calls)
def beforeCall(self, handler):
#log.debug('Calling %s.%s' % (self.getName(), handler.__name__))
self.isRunning('%s.%s' % (self.getName(), handler.__name__))
def afterCall(self, handler):
self.isRunning('%s.%s' % (self.getName(), handler.__name__), False)
def doShutdown(self):
self.shuttingDown(True)
def shuttingDown(self, value = None):
if value is None:
return self.needs_shutdown
self.needs_shutdown = value
def isRunning(self, value = None, bool = True):
if value is None:
return self.running
if bool:
self.running.append(value)
else:
try:
self.running.remove(value)
except:
log.error("Something went wrong when finishing the plugin function. Could not find the 'is_running' key")
def isDisabled(self):
return not self.isEnabled()
def isEnabled(self):
return self.conf(self.enabled_option) or self.conf(self.enabled_option) == None