system/TestSlice.py

   1 # Thierry Parmentelat <thierry.parmentelat@inria.fr>
   2 # Copyright (C) 2010 INRIA
   3 #
   4 import utils
   5 import os, os.path
   6 import datetime
   7 import time
   8
   9 from TestKey import TestKey
  10 from TestUser import TestUser
  11 from TestNode import TestNode
  12 from TestSsh import TestSsh
  13
  14 class TestSlice:
  15
  16     def __init__ (self,test_plc,test_site,slice_spec):
  17         self.test_plc=test_plc
  18         self.test_site=test_site
  19         self.slice_spec=slice_spec
  20         self.test_ssh=TestSsh(self.test_plc.test_ssh)
  21
  22     def name(self):
  23         return self.slice_spec['slice_fields']['name']
  24
  25     def get_slice(self,slice_name):
  26         for slice_spec in self.test_plc.plc_spec['slices']:
  27             if(slice_spec['slice_fields']['name']== slice_name):
  28                 return slice_spec
  29
  30     def owner_auth(self):
  31         owner_spec = self.test_site.locate_user(self.slice_spec['owner'])
  32         return TestUser(self,self.test_site,owner_spec).auth()
  33
  34     def slice_name (self):
  35         return self.slice_spec['slice_fields']['name']
  36
  37     # init slice with people, and then add nodes
  38     def create_slice(self):
  39         auth = self.owner_auth()
  40         slice_fields = self.slice_spec['slice_fields']
  41         slice_name = slice_fields['name']
  42         utils.header("Creating slice %s"%slice_name)
  43         self.test_plc.apiserver.AddSlice(auth,slice_fields)
  44         for username in self.slice_spec['usernames']:
  45                 user_spec=self.test_site.locate_user(username)
  46                 test_user=TestUser(self,self.test_site,user_spec)
  47                 self.test_plc.apiserver.AddPersonToSlice(auth, test_user.name(), slice_name)
  48         # add initscript code or name as appropriate
  49         if self.slice_spec.has_key('initscriptcode'):
  50             iscode=self.slice_spec['initscriptcode']
  51             utils.header("Adding initscript code %s in %s"%(iscode,slice_name))
  52             self.test_plc.apiserver.AddSliceTag(self.test_plc.auth_root(), slice_name,'initscript_code',iscode)
  53         elif self.slice_spec.has_key('initscriptname'):
  54             isname=self.slice_spec['initscriptname']
  55             utils.header("Adding initscript name %s in %s"%(isname,slice_name))
  56             self.test_plc.apiserver.AddSliceTag(self.test_plc.auth_root(), slice_name,'initscript',isname)
  57         if self.slice_spec.has_key ('vref'):
  58             vref_value=self.slice_spec['vref']
  59             self.test_plc.apiserver.AddSliceTag(self.test_plc.auth_root(), slice_name,'vref',vref_value)
  60
  61         self.add_nodes()
  62
  63     def check_vsys_defaults (self, options, *args, **kwds):
  64         "check vsys tags match PLC_VSYS_DEFAULTS"
  65         auth = self.owner_auth()
  66         slice_fields = self.slice_spec['slice_fields']
  67         slice_name = slice_fields['name']
  68         vsys_tags = self.test_plc.apiserver.GetSliceTags (auth,{'tagname':'vsys','name':slice_name})
  69         values=[ st['value'] for st in vsys_tags ]
  70         expected=self.test_plc.plc_spec['expected_vsys_tags']
  71         return set(values) == set(expected)
  72
  73     # just add the nodes and handle tags
  74     def add_nodes (self):
  75         auth = self.owner_auth()
  76         slice_name = self.slice_name()
  77         hostnames=[]
  78         for nodename in self.slice_spec['nodenames']:
  79             node_spec=self.test_site.locate_node(nodename)
  80             test_node=TestNode(self,self.test_site,node_spec)
  81             hostnames += [test_node.name()]
  82         utils.header("Adding %r in %s"%(hostnames,slice_name))
  83         self.test_plc.apiserver.AddSliceToNodes(auth, slice_name, hostnames)
  84
  85     # trash the slice altogether
  86     def delete_slice(self):
  87         auth = self.owner_auth()
  88         slice_name = self.slice_name()
  89         utils.header("Deleting slice %s"%slice_name)
  90         self.test_plc.apiserver.DeleteSlice(auth,slice_name)
  91
  92     # keep the slice alive and just delete nodes
  93     def delete_nodes (self):
  94         auth = self.owner_auth()
  95         slice_name = self.slice_name()
  96         print 'retrieving slice %s'%slice_name
  97         slice=self.test_plc.apiserver.GetSlices(auth,slice_name)[0]
  98         node_ids=slice['node_ids']
  99         utils.header ("Deleting %d nodes from slice %s"%\
 100                           (len(node_ids),slice_name))
 101         self.test_plc.apiserver.DeleteSliceFromNodes (auth,slice_name, node_ids)
 102
 103     def locate_private_key(self):
 104         key_names=[]
 105         for username in self.slice_spec['usernames']:
 106             user_spec=self.test_site.locate_user(username)
 107             key_names += user_spec['key_names']
 108         return self.test_plc.locate_private_key_from_key_names (key_names)
 109
 110     # trying to reach the slice through ssh - expected to answer
 111     def ssh_slice (self, options, *args, **kwds):
 112         "tries to ssh-enter the slice with the user key, to ensure slice creation"
 113         return self.do_ssh_slice(options, expected=True, *args, **kwds)
 114
 115     # when we expect the slice is not reachable
 116     def ssh_slice_off (self, options, *args, **kwds):
 117         "tries to ssh-enter the slice with the user key, expecting it to be unreachable"
 118         return self.do_ssh_slice(options, expected=False, *args, **kwds)
 119
 120     def do_ssh_slice(self,options,expected=True,timeout_minutes=20,silent_minutes=10,period=15):
 121         timeout = datetime.datetime.now()+datetime.timedelta(minutes=timeout_minutes)
 122         graceout = datetime.datetime.now()+datetime.timedelta(minutes=silent_minutes)
 123         # locate a key
 124         private_key=self.locate_private_key()
 125         if not private_key :
 126             utils.header("WARNING: Cannot find a valid key for slice %s"%self.name())
 127             return False
 128
 129         # convert nodenames to real hostnames
 130         slice_spec = self.slice_spec
 131         restarted=[]
 132         tocheck=[]
 133         for nodename in slice_spec['nodenames']:
 134             (site_spec,node_spec) = self.test_plc.locate_node(nodename)
 135             tocheck.append(node_spec['node_fields']['hostname'])
 136
 137         if expected:    msg="ssh slice access enabled"
 138         else:           msg="ssh slice access disabled"
 139
 140         utils.header("checking for %s -- slice %s on nodes %r"%(msg,self.name(),tocheck))
 141         utils.header("max timeout is %d minutes, silent for %d minutes (period is %s)"%\
 142                          (timeout_minutes,silent_minutes,period))
 143         while tocheck:
 144             for hostname in tocheck:
 145                 (site_spec,node_spec) = self.test_plc.locate_hostname(hostname)
 146                 date_test_ssh = TestSsh (hostname,key=private_key,username=self.name())
 147                 command = date_test_ssh.actual_command("echo hostname ; hostname; echo id; id; echo uname -a ; uname -a")
 148                 date = utils.system (command, silent=datetime.datetime.now() < graceout)
 149                 if getattr(options,'dry_run',None): return True
 150                 if expected:    success = date==0
 151                 else:           success = date!=0
 152
 153                 if success:
 154                     utils.header("OK %s - slice=%s@%s"%(msg,self.name(),hostname))
 155                     tocheck.remove(hostname)
 156                 else:
 157                     # real nodes will have been checked once in case they're up - skip if not
 158                     if TestNode.is_real_model(node_spec['node_fields']['model']):
 159                         utils.header("WARNING : Checking slice %s on real node %s skipped"%(self.name(),hostname))
 160                         tocheck.remove(hostname)
 161                     # nm restart after first failure, if requested
 162                     if options.forcenm and hostname not in restarted:
 163                         utils.header ("forcenm option : restarting nm on %s"%hostname)
 164                         restart_test_ssh=TestSsh(hostname,key="keys/key_admin.rsa")
 165                         access=restart_test_ssh.actual_command('service nm restart')
 166                         if (access==0):
 167                             utils.header('nm restarted on %s'%hostname)
 168                         else:
 169                             utils.header('Failed to restart nm on %s'%(hostname))
 170                         restarted.append(hostname)
 171             if not tocheck:
 172                 # we're done
 173                 return True
 174             if datetime.datetime.now() > timeout:
 175                 for hostname in tocheck:
 176                     utils.header("FAILED %s slice=%s@%s"%(msg,self.name(),hostname))
 177                 return False
 178             # wait for the period
 179             time.sleep (period)
 180         # for an empty slice
 181         return True