From 2bdad0ae7a3a6e4ec5116becd39910388b679ed2 Mon Sep 17 00:00:00 2001
From: Leif Johansson <leifj@sunet.se>
Date: Thu, 4 Oct 2012 15:39:08 +0200
Subject: restructure

---
 meetingtools/ac/__init__.py |  57 ++++++++++++
 meetingtools/ac/api.py      | 214 ++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 271 insertions(+)
 create mode 100644 meetingtools/ac/__init__.py
 create mode 100644 meetingtools/ac/api.py

(limited to 'meetingtools/ac')

diff --git a/meetingtools/ac/__init__.py b/meetingtools/ac/__init__.py
new file mode 100644
index 0000000..2bbd25f
--- /dev/null
+++ b/meetingtools/ac/__init__.py
@@ -0,0 +1,57 @@
+from meetingtools.ac.api import ACPClient
+import time
+from meetingtools.apps.cluster.models import acc_for_user
+from django.core.cache import cache
+from Queue import Queue
+import logging
+from django.contrib.auth.models import User
+
+_pools = {}
+
+MAXCALLS = 10    
+MAXIDLE = 10
+
+class ClientPool(object):
+    
+    def __init__(self,acc,maxsize=0,increment=2):
+        self._q = Queue(maxsize)
+        self._acc = acc
+        self._increment = increment
+    
+    def allocate(self):
+        now = time.time()
+        api = None
+        while not api:
+            if self._q.empty():
+                for i in range(1,self._increment):
+                    logging.debug("adding instance %d" % i)
+                    api = ACPClient(self._acc.api_url,self._acc.user,self._acc.password,cpool=self)
+                    self._q.put_nowait(api)
+            
+            api = self._q.get()
+            if api and (api.age > MAXCALLS or now - api.lastused > MAXIDLE):
+                api = None
+        return api
+
+# with ac_api_client(acc) as api
+#    ...
+
+def ac_api_client(o):
+    acc = o
+    logging.debug("ac_api_client(%s)" % repr(o))
+    if hasattr(o,'user') and isinstance(getattr(o,'user'),User):
+        acc = acc_for_user(getattr(o,'user'))
+    elif hasattr(o,'acc'):
+        acc = getattr(o,'acc')
+    
+    tag = 'ac_api_client_%d' % acc.id
+    pool = _pools.get(tag)
+    if pool is None:
+        pool = ClientPool(acc,maxsize=30)
+        _pools[tag] = pool
+        
+    return pool.allocate()
+
+
+
+    
\ No newline at end of file
diff --git a/meetingtools/ac/api.py b/meetingtools/ac/api.py
new file mode 100644
index 0000000..5fbcfbf
--- /dev/null
+++ b/meetingtools/ac/api.py
@@ -0,0 +1,214 @@
+'''
+Created on Jan 31, 2011
+
+@author: leifj
+'''
+from StringIO import StringIO
+
+import httplib2
+from urllib import quote_plus
+import logging
+from pprint import pformat
+import os
+import tempfile
+import time
+from lxml import etree
+from meetingtools.site_logging import logger
+import lxml
+from django.http import HttpResponseRedirect
+from celery.execute import send_task
+
+class ACPException(Exception):
+    def __init__(self, value):
+        self.value = value
+
+    def __str__(self):
+        return etree.tostring(self.value)
+
+def _first_or_none(x):
+    if not x:
+        return None
+    return x[0]
+
+class ACPResult():
+    
+    def __init__(self,content):
+        self.et = etree.fromstring(content)
+        self.status = _first_or_none(self.et.xpath('//status'))
+        
+    def is_error(self):
+        return self.status_code() != 'ok'
+
+    def status_code(self):
+        return self.status.get('code')
+    
+    def subcode(self):
+        return self.status.get('subcode')
+
+    def exception(self):
+        raise ACPException,self.status
+
+    def get_principal(self):
+        logger.debug(lxml.etree.tostring(self.et))
+        return _first_or_none(self.et.xpath('//principal'))
+
+def _enc(v):
+        ev = v
+        if isinstance(ev,str) or isinstance(ev,unicode):
+            ev = ev.encode('iso-8859-1')
+        return ev
+
+def _getset(d,key,value=None):
+    if value:
+        if d.has_key(key):
+            return d[key]
+        else:
+            return None
+    else:
+        d[key] = value
+
+class ACPClient():
+    
+    def __init__(self,url,username=None,password=None,cache=True,cpool=None):
+        self._cpool = cpool
+        self.age = 0
+        self.createtime = time.time()
+        self.lastused = self.createtime
+        self.url = url
+        self.session = None
+        if username and password:
+            self.login(username,password)
+        if cache:
+            self._cache = {'login':{},'group':{}}
+            
+    def __exit__(self,type,value,traceback):
+        if self._cpool and not value:
+            self._cpool._q.put_nowait(self)
+        
+    def __enter__(self):
+        return self
+
+    
+    def request(self,method,p={},raise_error=False):
+        self.age += 1
+        self.lastused = time.time()
+        u = list()
+        u.append("action=%s" % method)
+        if self.session:
+            u.append("session=%s" % self.session)
+        for k,v in p.items():
+            value = v
+            if type(v) == int:
+                value = "%d" % value
+            u.append('%s=%s' % (k,quote_plus(value.encode("utf-8"))))
+        
+        url = self.url + '?' + '&'.join(u)
+    
+        h = httplib2.Http(tempfile.gettempdir()+os.sep+".cache",disable_ssl_certificate_validation=True);
+        logging.debug(url)
+        resp, content = h.request(url, "GET")
+        logging.debug(pformat(resp))
+        logging.debug(pformat(content))
+        if resp.status != 200:
+            raise ACPException,resp.reason
+        
+        if resp.has_key('set-cookie'):
+            cookie = resp['set-cookie']
+            if cookie:
+                avp = cookie.split(";")
+                if len(avp) > 0:
+                    av = avp[0].split('=')
+                    self.session = av[1]
+                    
+        r = ACPResult(content)
+        if r.is_error() and raise_error:
+            raise r.exception()
+        
+        return r;
+    
+    def redirect_to(self,url):
+        if self.session:
+            return HttpResponseRedirect("%s?session=%s" % (url,self.session))
+        else:
+            return HttpResponseRedirect(url)
+    
+    def login(self,username,password):
+        result = self.request('login',{'login':username,'password':password})
+        if result.is_error():
+            raise result.exception()
+        return result
+    
+    def find_or_create_principal(self,key,value,t,d):
+        if not self._cache.has_key(t):
+            self._cache[t] = {}
+        cache = self._cache[t]
+        
+        # lxml etree Elements are not picklable
+        p = None
+        if not cache.has_key(key):
+            p = self._find_or_create_principal(key,value,t,d)
+            cache[key] = etree.tostring(p)
+        else:   
+            p = etree.parse(StringIO(cache[key]))
+        return p
+        
+    def find_principal(self,key,value,t):
+        return self.find_or_create_principal(key,value,t,None)
+    
+    def _find_or_create_principal(self,key,value,t,d):
+        result = self.request('principal-list',{'filter-%s' % key: value,'filter-type': t}, True)
+        principal = result.get_principal()
+        if result.is_error():
+            if result.status_code() != 'no_data':
+                result.exception()
+        elif principal and d:
+            d['principal-id'] = principal.get('principal-id')
+        
+        rp = principal
+        if d:
+            update_result = self.request('principal-update',d)
+            rp = update_result.get_principal()
+            if not rp:
+                rp = principal
+        return rp
+    
+    def find_builtin(self,t):
+        result = self.request('principal-list', {'filter-type': t}, True)
+        return result.get_principal()
+    
+    def find_group(self,name):
+        result = self.request('principal-list',{'filter-name':name,'filter-type':'group'},True)
+        return result.get_principal()
+    
+    def find_user(self,login):
+        return self.find_principal("login", login, "user")
+    
+    def add_remove_member(self,principal_id,group_id,is_member):
+        m = "0"
+        if is_member:
+            m = "1"
+        self.request('group-membership-update',{'group-id': group_id, 'principal-id': principal_id,'is-member':m},True)
+        
+    def add_member(self,principal_id,group_id):
+        return self.add_remove_member(principal_id, group_id, True)
+    
+    def remove_member(self,principal_id,group_id):
+        return self.add_remove_member(principal_id, group_id, False)
+    
+    def user_counts(self,sco_id):
+        user_count = None
+        host_count = None
+        userlist = self.request('meeting-usermanager-user-list',{'sco-id': sco_id},False)
+        if userlist.status_code() == 'ok':
+            user_count = int(userlist.et.xpath("count(.//userdetails)"))
+            host_count = int(userlist.et.xpath("count(.//userdetails/role[text() = 'host'])"))
+        elif userlist.status_code() == 'no-access' and userlist.subcode() == 'not-available': #no active session
+            user_count = 0
+            host_count = 0
+        
+        return (user_count,host_count)
+    
+    def poll_user_counts(self,room):
+        (room.user_count,room.host_count) = self.user_counts(room.sco_id)
+        room.save()
+        return (room.user_count,room.host_count)
\ No newline at end of file
-- 
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