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
- nodes_ttl = None
- nodes = None
- slices = None
- policy = None
- aggregates = None
- timestamp = None
- threshold = None
- shell = None
- registry = None
- key_file = None
- cert_file = None
- credential = None
##
# Create a new slice manager object.
# @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/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 + "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.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 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.
- """
- lines = []
- try:
- f = open(aggregates_file, 'r')
- lines = f.readlines()
- f.close()
- except: raise
-
- for line in lines:
- # Skip comments
- if line.strip.startswith("#"):
- continue
- agg_info = line.split("\t").split(" ")
-
- # skip invalid info
- if len(agg_info) != 3:
- continue
-
- # create xmlrpc connection using GeniClient
- hrn, address, port = agg_info[0], agg_info[1], agg_info[2]
- url = 'https://%(address)s:%(port)s' % locals()
- self.aggregates[hrn] = GeniClient(url, self.key_file, self.cert_file)
-
-
- def item_hrns(self, items):
- """
- Take a list of items (components or slices) and return a dictionary where
- the key is the authoritative hrn and the value is a list of items at that
- hrn.
- """
- item_hrns = {}
- agg_hrns = self.aggregates.keys()
- for agg_hrn in agg_hrns:
- item_hrns[agg_hrn] = []
- for item in items:
- for agg_hrn in agg_hrns:
- if item.startswith(agg_hrn):
- item_hrns[agg_hrn] = item
-
- return item_hrns
-
-
- def hostname_to_hrn(self, login_base, hostname):
- """
- Convert hrn to plantelab name.
- """
- genihostname = "_".join(hostname.split("."))
- return ".".join([self.hrn, login_base, genihostname])
-
- def slicename_to_hrn(self, slicename):
- """
- Convert hrn to planetlab name.
- """
- slicename = slicename.replace("_", ".")
- return ".".join([self.hrn, slicename])
-
- def refresh_components(self):
- """
- Update the cached list of nodes.
- """
- print "refreshing"
-
- aggregates = self.aggregates.keys()
- all_nodes = []
- nodedict = {}
- for aggregate in aggregates:
- try:
- # resolve components hostnames
- nodes = self.aggregates[aggregate].get_components()
- all_nodes.extend(nodes)
- except:
- # XX print out to some error log
- pass
-
- 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):
- """
- Read cached list of nodes and slices.
- """
- print "loading nodes"
- # Read component list from cached file
- self.nodes.load()
- self.timestamp.load()
- time_format = "%Y-%m-%d %H:%M:%S"
- 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.
- """
- self.policy.load()
-
- def load_slices(self):
- """
- Read current slice instantiation states.
- """
- print "loading slices"
- self.slices.load()
-
-
- def getComponents(self):
- """
- Return a list of components managed by this slice manager.
- """
- # Reload components list
- 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.components:
- self.load_components()
- return self.nodes.keys()
-
-
- def getSlices(self):
- """
- Return a list of instnatiated managed by this slice manager.
- """
- # XX return only the slices at the specified hrn
- return dict(self.slices)
-
- def getResources(self, slice_hrn):
- """
- Return the current rspec for the specified 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 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()
- 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 deleteSlice_(self, slice_hrn):
- """
- Remove this slice from all components it was previouly associated with and
- free up the resources it was using.
- """
- # 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 startSlice(self, slice_hrn):
- """
- Stop the slice at plc.
- """
- cred = self.credential
-
- for hrn in self.aggregates.keys():
- self.aggregates[hrn].startSlice(cred, slice_hrn)
- return 1
-
- def stopSlice(self, slice_hrn):
- """
- Stop the slice at plc
- """
- cred = self.credential
- for hrn in self.aggregates.keys():
- self.aggregates[hrn].startSlice(cred, slice_hrn)
- return 1
-
- def resetSlice(self, slice_hrn):
- """
- Reset the slice
- """
- # XX not yet implemented
- return 1
-
- def getPolicy(self):
- """
- Return the policy of this slice manager.
- """
-
- return self.policy
-
-
-
-##############################
-## Server methods here for now
-##############################
-
- def list_components(self):
- return self.getComponents()
-
- def list_slices(self, cred, hrn):
- self.decode_authentication(cred, 'list')
- return self.getSlices(hrn)
-
- def get_resources(self, cred, hrn):
- self.decode_authentication(cred, 'info')
- return self.getResources(hrn)
-
- def get_policy(self, cred):
- self.decode_authentication(cred, 'info')
- return self.getPolicy()
-
- def create_slice(self, cred, hrn, rspec):
- self.decode_authentication(cred, 'embed')
- return self.createSlice(hrn)
-
- def delete_slice(self, cred, hrn):
- self.decode_authentication(cred, 'embed')
- return self.deleteSlice(hrn)
-
- def start_slice(self, cred, hrn):
- self.decode_authentication(cred, 'control')
- return self.startSlice(hrn)
-
- def stop_slice(self, cred, hrn):
- self.decode_authentication(cred, 'control')
- return self.stopSlice(hrn)
-
- def reset_slice(self, cred, hrn):
- self.decode_authentication(cred, 'control')
- return self.resetSlice(hrn)
-
- def register_functions(self):
- GeniServer.register_functions(self)
-
- # Aggregate interface methods
- 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)
-
+ GeniServer.__init__(self, ip, port, key_file, cert_file)
+ self.server.interface = 'slicemgr'
git://git.onelab.eu / sfa.git / blobdiff