from geni.util.geniserver import *
from geni.util.geniclient import *
from geni.util.cert import *
+from geni.util.credential import Credential
from geni.util.trustedroot import *
from geni.util.excep import *
from geni.util.misc import *
from geni.util.config import Config
+from geni.util.rspec import Rspec
+from geni.util.specdict import *
+from geni.util.storage import SimpleStorage
class SliceMgr(GeniServer):
hrn = None
- key_file = None
- cert_file = None
- components_file = None
- slices_file = None
- components_ttl = None
- components = []
- slices = []
- policy = {}
+ nodes_ttl = None
+ nodes = None
+ slices = None
+ policy = None
+ aggregates = None
timestamp = None
threshold = None
shell = None
- aggregates = {}
-
+ registry = None
+ key_file = None
+ cert_file = None
+ credential = None
##
# Create a new slice manager object.
# @param key_file private key filename of registry
# @param cert_file certificate filename containing public key (could be a GID file)
- def __init__(self, ip, port, key_file, cert_file, config = "/usr/share/geniwrapper/util/geni_config"):
+ def __init__(self, ip, port, key_file, cert_file, config = "/usr/share/geniwrapper/geni/util/geni_config"):
GeniServer.__init__(ip, port, key_file, cert_file)
self.key_file = key_file
self.cert_file = cert_file
self.conf = Config(config)
basedir = self.conf.GENI_BASE_DIR + os.sep
- server_basedir = basedir + os.sep + "plc" + os.sep
- self.hrn = conf.GENI_INTERFACE_HRN
-
+ server_basedir = basedir + os.sep + "geni" + os.sep
+ self.hrn = conf.GENI_INTERFACE_HRN
+
# Get list of aggregates this sm talks to
+ # XX do we use simplestorage to maintain this file manually?
aggregates_file = server_basedir + os.sep + 'aggregates'
- self.load_aggregates(aggregates_file)
- self.components_file = os.sep.join([server_basedir, 'components', 'slicemgr.' + hrn + '.comp'])
- self.slices_file = os.sep.join([server_basedir, 'components', 'slicemgr' + hrn + '.slices'])
- self.timestamp_file = os.sep.join([server_basedir, 'components', 'slicemgr' + hrn + '.timestamp'])
- self.components_ttl = components_ttl
- self.policy['whitelist'] = []
- self.policy['blacklist'] = []
- self.connect()
+ self.aggregates = SimpleStorage(aggregates_file)
+ self.connect_aggregates(aggregates_file)
+
+ nodes_file = os.sep.join([server_basedir, 'smgr.' + self.hrn + '.components'])
+ self.nodes = SimpleStorage(nodes_file)
+ self.nodes.load()
+
+ slices_file = os.sep.join([server_basedir, 'smgr' + self.hrn + '.slices'])
+ self.slices = SimpleStorage(slices_file)
+ self.slices.load()
+
+ policy_file = os.sep.join([server_basedir, 'smgr.' + self.hrn + '.policy'])
+ self.policy = SimpleStorage(policy_file)
+ self.policy.load()
+
+ timestamp_file = os.sep.join([server_basedir, 'smgr.' + self.hrn + '.timestamp'])
+ self.timestamp = SimpleStorage(timestamp_file)
+
+ self.nodes_ttl = 1
+ self.connectAggregates()
+ self.connectRegistry()
+ self.loadCredential()
- def load_aggregates(self, aggregates_file):
+
+ def loadCredential(self):
+ """
+ Attempt to load credential from file if it exists. If it doesnt get
+ credential from registry.
+ """
+
+ self_cred_filename = self.server_basedir + os.sep + "smgr." + self.hrn + ".cred"
+ ma_cred_filename = self.server_basedir + os.sep + "smgr." + self.hrn + ".sa.cred"
+
+ # see if this file exists
+ try:
+ cred = Credential(filename = ma_cred_filename)
+ self.credential = cred.save_to_string()
+ except IOError:
+ # get self credential
+ self_cred = self.registry.get_credential(None, 'ma', self.hrn)
+ self_credential = Credential(string = self_cred)
+ self_credential.save_to_file(self_cred_filename)
+
+ # get ma credential
+ ma_cred = self.registry.get_gredential(self_cred)
+ ma_credential = Credential(string = ma_cred)
+ ma_credential.save_to_file(ma_cred_filename)
+ self.credential = ma_cred
+
+ def connect_aggregates(self, aggregates_file):
"""
Get info about the aggregates available to us from file and create
an xmlrpc connection to each. If any info is invalid, skip it.
aggregates = self.aggregates.keys()
all_nodes = []
- all_slices = []
+ nodedict = {}
for aggregate in aggregates:
try:
# resolve components hostnames
nodes = self.aggregates[aggregate].get_components()
all_nodes.extend(nodes)
- # update timestamp and threshold
- self.timestamp = datetime.datetime.now()
- delta = datetime.timedelta(hours=self.components_ttl)
- self.threshold = self.timestamp + delta
except:
# XX print out to some error log
pass
- self.components = all_nodes
- f = open(self.components_file, 'w')
- f.write(str(self.components))
- f.close()
- f = open(self.timestamp_file, 'w')
- f.write(str(self.threshold))
- f.close()
+ for node in all_nodes:
+ if self.polciy['whitelist'] and node not in self.polciy['whitelist']:
+ continue
+ if self.polciy['blacklist'] and node in self.policy['blacklist']:
+ continue
+
+ nodedict[node] = node
+
+ self.nodes = SimpleStorate(self.nodes.db_filename, nodedict)
+ self.nodes.write()
+
+ # update timestamp and threshold
+ self.timestamp['timestamp'] = datetime.datetime.now()
+ delta = datetime.timedelta(hours=self.nodes_tt1)
+ self.threshold = self.timestamp['timestamp'] + delta
+ self.timestamp.write()
+
def load_components(self):
"""
"""
print "loading nodes"
# Read component list from cached file
- if os.path.exists(self.components_file):
- f = open(self.components_file, 'r')
- self.components = eval(f.read())
- f.close()
-
+ self.nodes.load()
+ self.timestamp.load()
time_format = "%Y-%m-%d %H:%M:%S"
- if os.path.exists(self.timestamp_file):
- f = open(self.timestamp_file, 'r')
- timestamp = str(f.read()).split(".")[0]
- self.timestamp = datetime.datetime.fromtimestamp(time.mktime(time.strptime(timestamp, time_format)))
- delta = datetime.timedelta(hours=self.components_ttl)
- self.threshold = self.timestamp + delta
- f.close()
+ timestamp = self.timestamp['timestamp']
+ self.timestamp['timestamp'] = datetime.datetime.fromtimestamp(time.mktime(time.strptime(timestamp, time_format)))
+ delta = datetime.timedelta(hours=self.nodes_ttl)
+ self.threshold = self.timestamp['timestamp'] + delta
def load_policy(self):
"""
Read the list of blacklisted and whitelisted nodes.
"""
- whitelist = []
- blacklist = []
- if os.path.exists(self.whitelist_file):
- f = open(self.whitelist_file, 'r')
- lines = f.readlines()
- f.close()
- for line in lines:
- line = line.strip().replace(" ", "").replace("\n", "")
- whitelist.extend(line.split(","))
-
-
- if os.path.exists(self.blacklist_file):
- f = open(self.blacklist_file, 'r')
- lines = f.readlines()
- f.close()
- for line in lines:
- line = line.strip().replace(" ", "").replace("\n", "")
- blacklist.extend(line.split(","))
-
- self.policy['whitelist'] = whitelist
- self.policy['blacklist'] = blacklist
+ self.policy.load()
def load_slices(self):
"""
- Read current slice instantiation states.
+ Read current slice instantiation states.
"""
print "loading slices"
- if os.path.exists(self.slices_file):
- f = open(self.components_file, 'r')
- self.slices = eval(f.read())
- f.close()
-
- def write_slices(self):
- """
- Write current slice instantiations to file.
- """
- print "writing slices"
- f = open(self.slices_file, 'w')
- f.write(str(self.slices))
- f.close()
+ self.slices.load()
- def get_components(self):
+ def getComponents(self):
"""
Return a list of components managed by this slice manager.
"""
self.refresh_components()
elif now < self.threshold and not self.components:
self.load_components()
- return self.components
+ return self.nodes.keys()
- def get_slices(self):
+ def getSlices(self):
"""
Return a list of instnatiated managed by this slice manager.
"""
- now = datetime.datetime.now()
- #self.load_components()
- if not self.threshold or not self.timestamp or now > self.threshold:
- self.refresh_components()
- elif now < self.threshold and not self.slices:
- self.load_components()
- return self.slices
+ # XX return only the slices at the specified hrn
+ return dict(self.slices)
- def get_slivers(self, hrn):
- """
- Return the list of slices instantiated at the specified component.
- """
-
- # hrn is assumed to be a component hrn
- if hrn not in self.slices:
- raise RecordNotFound(hrn)
-
- return self.slices[hrn]
-
- def get_rspec(self, hrn, type):
- #rspec = Rspec()
- if type in ['node']:
- nodes = self.shell.GetNodes(self.auth)
- elif type in ['slice']:
- slices = self.shell.GetSlices(self.auth)
- elif type in ['aggregate']:
- pass
-
- def get_resources(self, slice_hrn):
+ def getResources(self, slice_hrn):
"""
Return the current rspec for the specified slice.
"""
- slicename = hrn_to_plcslicename(slice_hrn)
- rspec = self.get_rspec(slicenamem, 'slice' )
-
+ cred = self.credential
+
+ if slice_hrn in self.slices.keys():
+ # check if we alreay have this slices state saved
+ rspec = self.slices[slice_hrn]
+ else:
+ # request this slices state from all known aggregates
+ rspecdicts = []
+ for hrn in self.aggregates.keys():
+ # XX need to use the right credentials for this call
+ # check if the slice has resources at this hrn
+ tempresources = self.aggregates[hrn].resources(cred, slice_hrn)
+ temprspec = Rspec()
+ temprspec.parseString(temprspec)
+ if temprspec.getDictsByTagName('NodeSpec'):
+ # append this rspec to the list of rspecs
+ rspecdicts.append(temprspec.toDict())
+
+ # merge all these rspecs into one
+ start_time = int(self.timestamp['timestamp'].strftime("%s"))
+ end_time = int(self.duration.strftime("%s"))
+ duration = end_time - start_time
+
+ # create a plc dict
+ networks = [rspecdict['networks'][0] for rspecdict in rspecdicts]
+ resources = {'networks': networks, 'start_time': start_time, 'duration': duration}
+ # convert the plc dict to an rspec dict
+ resourceDict = RspecDict(resources)
+ resourceSpec = Rspec()
+ resourceSpec.parseDict(resourceDict)
+ rspec = resourceSpec.toxml()
+ # save this slices resources
+ self.slices[slice_hrn] = rspec
+ self.slices.write()
+
return rspec
- def create_slice(self, slice_hrn, rspec, attributes):
+ def createSlice(self, slice_hrn, rspec, attributes):
"""
Instantiate the specified slice according to whats defined in the rspec.
"""
+ # XX need to gget the correct credentials
+ cred = self.credential
+
+ # save slice state locally
+ # we can assume that spec object has been validated so its safer to
+ # save this instead of the unvalidated rspec the user gave us
+ self.slices[slice_hrn] = spec.toxml()
+ self.slices.write()
+
+ # extract network list from the rspec and create a separate
+ # rspec for each network
slicename = self.hrn_to_plcslicename(slice_hrn)
- #spec = Rspec(rspec)
- node_hrns = []
- #for netspec in spec['networks]:
- # networkname = netspec['name']
- # nodespec = spec['networks']['nodes']
- # nodes = [nspec['name'] for nspec in nodespec]
- # node_hrns = [networkname + node for node in nodes]
- #
- self.db.AddSliceToNodes(slice_hrn, node_hrns)
+ spec = Rspec()
+ spec.parseString(rspec)
+ specDict = spec.toDict()
+ start_time = specDict['start_time']
+ end_time = specDict['end_time']
+
+ rspecs = {}
+ # only attempt to extract information about the aggregates we know about
+ for hrn in self.aggregates.keys():
+ netspec = spec.getDictByTagNameValue('NetSpec', 'hrn')
+ if netspec:
+ # creat a plc dict
+ tempdict = {'start_time': star_time, 'end_time': end_time, 'networks': netspec}
+ #convert the plc dict to rpsec dict
+ resourceDict = RspecDict(tempdict)
+ # parse rspec dict
+ tempspec = Rspec()
+ tempspec.parseDict(resourceDict)
+ rspecs[hrn] = tempspec.toxml()
+
+ # notify the aggregates
+ for hrn in self.rspecs.keys():
+ self.aggregates[hrn].createSlice(cred, rspecs[hrn])
+
return 1
+
+ def updateSlice(self, slice_hrn, rspec, attributes = []):
+ """
+ Update the specifed slice
+ """
+ self.create_slice(slice_hrn, rspec, attributes)
- def delete_slice_(self, slice_hrn):
+ def deleteSlice_(self, slice_hrn):
"""
Remove this slice from all components it was previouly associated with and
free up the resources it was using.
"""
- self.db.DeleteSliceFromNodes(self.auth, slicename, self.components)
+ # XX need to get the correct credential
+ cred = self.credential
+
+ if self.slices.has_key(slice_hrn):
+ self.slices.pop(slice_hrn)
+ self.slices.write()
+
+ for hrn in self.aggregates.keys():
+ self.aggregates[hrn].deleteSlice(cred, slice_hrn)
+
return 1
- def start_slice(self, slice_hrn):
+ def startSlice(self, slice_hrn):
"""
Stop the slice at plc.
"""
- slicename = hrn_to_plcslicename(slice_hrn)
- slices = self.shell.GetSlices(self.auth, {'name': slicename}, ['slice_id'])
- if not slices:
- raise RecordNotFound(slice_hrn)
- slice_id = slices[0]
- atrribtes = self.shell.GetSliceAttributes({'slice_id': slice_id, 'name': 'enabled'}, ['slice_attribute_id'])
- attribute_id = attreibutes[0]
- self.shell.UpdateSliceAttribute(self.auth, attribute_id, "1" )
+ cred = self.credential
+
+ for hrn in self.aggregates.keys():
+ self.aggregates[hrn].startSlice(cred, slice_hrn)
return 1
- def stop_slice(self, slice_hrn):
+ def stopSlice(self, slice_hrn):
"""
Stop the slice at plc
"""
- slicename = hrn_to_plcslicename(slice_hrn)
- slices = self.shell.GetSlices(self.auth, {'name': slicename}, ['slice_id'])
- if not slices:
- raise RecordNotFound(slice_hrn)
- slice_id = slices[0]
- atrribtes = self.shell.GetSliceAttributes({'slice_id': slice_id, 'name': 'enabled'}, ['slice_attribute_id'])
- attribute_id = attreibutes[0]
- self.shell.UpdateSliceAttribute(self.auth, attribute_id, "0")
+ cred = self.credential
+ for hrn in self.aggregates.keys():
+ self.aggregates[hrn].startSlice(cred, slice_hrn)
return 1
- def reset_slice(self, slice_hrn):
+ def resetSlice(self, slice_hrn):
"""
Reset the slice
"""
- slicename = self.hrn_to_plcslicename(slice_hrn)
+ # XX not yet implemented
return 1
- def get_policy(self):
+ def getPolicy(self):
"""
Return the policy of this slice manager.
"""
## Server methods here for now
##############################
- def nodes(self):
- return self..get_components()
+ def list_components(self):
+ return self.getComponents()
- def slices(self):
- return self.get_slices()
+ def list_slices(self, cred, hrn):
+ self.decode_authentication(cred, 'list')
+ return self.getSlices(hrn)
- def resources(self, cred, hrn):
+ def get_resources(self, cred, hrn):
self.decode_authentication(cred, 'info')
- self.verify_object_belongs_to_me(hrn)
+ return self.getResources(hrn)
- return self.get_resources(hrn)
+ def get_policy(self, cred):
+ self.decode_authentication(cred, 'info')
+ return self.getPolicy()
- def create(self, cred, hrn, rspec):
+ def create_slice(self, cred, hrn, rspec):
self.decode_authentication(cred, 'embed')
- self.verify_object_belongs_to_me(hrn, rspec)
- return self.create(hrn)
+ return self.createSlice(hrn)
- def delete(self, cred, hrn):
+ def delete_slice(self, cred, hrn):
self.decode_authentication(cred, 'embed')
- self.verify_object_belongs_to_me(hrn)
- return self.delete_slice(hrn)
+ return self.deleteSlice(hrn)
- def start(self, cred, hrn):
+ def start_slice(self, cred, hrn):
self.decode_authentication(cred, 'control')
- return self.start(hrn)
+ return self.startSlice(hrn)
- def stop(self, cred, hrn):
+ def stop_slice(self, cred, hrn):
self.decode_authentication(cred, 'control')
- return self.stop(hrn)
+ return self.stopSlice(hrn)
- def reset(self, cred, hrn):
+ def reset_slice(self, cred, hrn):
self.decode_authentication(cred, 'control')
- return self.reset(hrn)
-
- def policy(self, cred):
- self.decode_authentication(cred, 'info')
- return self.get_policy()
+ return self.resetSlice(hrn)
def register_functions(self):
GeniServer.register_functions(self)
# Aggregate interface methods
- self.server.register_function(self.components)
- self.server.register_function(self.slices)
- self.server.register_function(self.resources)
- self.server.register_function(self.create)
- self.server.register_function(self.delete)
- self.server.register_function(self.start)
- self.server.register_function(self.stop)
- self.server.register_function(self.reset)
- self.server.register_function(self.policy)
+ self.server.register_function(self.list_components)
+ self.server.register_function(self.list_slices)
+ self.server.register_function(self.get_resources)
+ self.server.register_function(self.get_policy)
+ self.server.register_function(self.create_slice)
+ self.server.register_function(self.delete_slice)
+ self.server.register_function(self.start_slice)
+ self.server.register_function(self.stop_slice)
+ self.server.register_function(self.reset_slice)
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