-##
-# SliceMgr is a GeniServer that implements the Slice interface at PLC
-
-import tempfile
import os
-import time
import sys
+import datetime
+import time
-from util.hierarchy import Hierarchy
-from util.trustedroot import TrustedRootList
-from util.cert import Keypair, Certificate
-from util.gid import GID
-from util.geniserver import GeniServer
-from util.record import GeniRecord
-from util.genitable import GeniTable
-from util.geniticket import Ticket
+from util.geniserver import *
+from util.geniclient import *
+from util.cert import *
+from util.trustedroot import *
from util.excep import *
from util.misc import *
-
-from util.config import *
-
-##
-# SliceMgr class extends GeniServer class
+from util.config import Config
class SliceMgr(GeniServer):
+
+ hrn = None
+ key_file = None
+ cert_file = None
+ components_file = None
+ slices_file = None
+ components_ttl = None
+ components = []
+ slices = []
+ policies = {}
+ timestamp = None
+ threshold = None
+ shell = None
+ aggregates = {}
+
+
##
# Create a new slice manager object.
#
# @param ip the ip address to listen on
# @param port the port to listen on
# @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):
- GeniServer.__init__(self, ip, port, key_file, cert_file)
-
- # get PL account settings from config module
- self.pl_auth = get_pl_auth()
-
- # connect to planetlab
- if "Url" in self.pl_auth:
- self.connect_remote_shell()
- else:
- self.connect_local_shell()
-
- ##
- # Connect to a remote shell via XMLRPC
-
- def connect_remote_shell(self):
- import remoteshell
- self.shell = remoteshell.RemoteShell()
-
- ##
- # Connect to a local shell via local API functions
-
- def connect_local_shell(self):
- import PLC.Shell
- self.shell = PLC.Shell.Shell(globals = globals())
-
- ##
- # Register the server RPCs for the slice interface
+ # @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"):
+ 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
+
+ # Get list of aggregates this sm talks to
+ 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.connect()
+
+ def load_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 and slices.
+ """
+ print "refreshing"
+
+ aggregates = self.aggregates.keys()
+ all_nodes = []
+ all_slices = []
+ for aggregate in aggregates:
+ try:
+ # resolve components hostnames
+ nodes = self.aggregates[aggregate].get_components()
+ all_nodes.extend(nodes)
+ # resolve slices
+ slices = self.aggregates[aggregate].get_slices()
+ all_slices.extend(slice)
+ # 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
+ self.slices = all_slices
+ f = open(self.components_file, 'w')
+ f.write(str(self.components))
+ f.close()
+ f = open(self.slices_file, 'w')
+ f.write(str(self.slices))
+ f.close()
+ f = open(self.timestamp_file, 'w')
+ f.write(str(self.threshold))
+ f.close()
+
+ def load_components(self):
+ """
+ Read cached list of nodes and slices.
+ """
+ print "loading"
+ # 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()
+
+ if os.path.exists(self.slices_file):
+ f = open(self.components_file, 'r')
+ self.slices = eval(f.read())
+ f.close()
+
+ 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()
+
+ def get_components(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.components
+
+
+ def get_slices(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
+
+ 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):
+ """
+ Return the current rspec for the specified slice.
+ """
+ slicename = hrn_to_plcslicename(slice_hrn)
+ rspec = self.get_rspec(slicenamem, 'slice' )
+
+ return rspec
+
+ def create_slice(self, slice_hrn, rspec):
+ """
+ Instantiate the specified slice according to whats defined in the rspec.
+ """
+ slicename = self.hrn_to_plcslicename(slice_hrn)
+ #spec = Rspec(rspec)
+ #components = spec.components()
+ #shell.AddSliceToNodes(self.auth, slicename, components)
+ return 1
+
+ def delete_slice_(self, slice_hrn):
+ """
+ Remove this slice from all components it was previouly associated with and
+ free up the resources it was using.
+ """
+ slicename = self.hrn_to_plcslicename(slice_hrn)
+ rspec = self.get_resources(slice_hrn)
+ components = rspec.components()
+ shell.DeleteSliceFromNodes(self.auth, slicename, components)
+ return 1
+
+ def start_slice(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" )
+ return 1
+
+ def stop_slice(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")
+ return 1
+
+ def reset_slice(self, slice_hrn):
+ """
+ Reset the slice
+ """
+ slicename = self.hrn_to_plcslicename(slice_hrn)
+ return 1
+
+ def get_policy(self):
+ """
+ Return this aggregates policy as an rspec
+ """
+ rspec = self.get_rspec(self.hrn, 'aggregate')
+ return rspec
+
+
+
+##############################
+## Server methods here for now
+##############################
+
+ def nodes(self):
+ return self..get_components()
+
+ def slices(self):
+ return self.get_slices()
+
+ def resources(self, cred, hrn):
+ self.decode_authentication(cred, 'info')
+ self.verify_object_belongs_to_me(hrn)
+
+ return self.get_resources(hrn)
+
+ def create(self, cred, hrn, rspec):
+ self.decode_authentication(cred, 'embed')
+ self.verify_object_belongs_to_me(hrn, rspec)
+ return self.create(hrn)
+
+ def delete(self, cred, hrn):
+ self.decode_authentication(cred, 'embed')
+ self.verify_object_belongs_to_me(hrn)
+ return self.delete_slice(hrn)
+
+ def start(self, cred, hrn):
+ self.decode_authentication(cred, 'control')
+ return self.start(hrn)
+
+ def stop(self, cred, hrn):
+ self.decode_authentication(cred, 'control')
+ return self.stop(hrn)
+
+ def reset(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()
def register_functions(self):
GeniServer.register_functions(self)
- # slice interface
- self.server.register_function(self.create_slice)
- self.server.register_function(self.get_ticket)
- self.server.register_function(self.redeem_ticket)
- self.server.register_function(self.start_slice)
- self.server.register_function(self.stop_slice)
- self.server.register_function(self.reset_slice)
- self.server.register_function(self.delete_slice)
- self.server.register_function(self.get_slice_resources)
- self.server.register_function(self.list_slices)
- self.server.register_function(self.list_nodes)
-
- ##
- # create_slice: Create (instantiate) a slice.
- #
- # @param cred credential string
- # @param name name of the slice to retrieve a ticket for
- # @param rspec resource specification dictionary
- #
- # @return the string representation of a ticket object
-
- def create_slice(self, cred, name, rspec):
- self.decode_authentication(cred, "createslice")
- slicename = hrn_to_pl_slicename(self.object_gid.get_hrn())
- # extract per-aggregate netspec from rspec
- # call create_slice on each aggregate
-
- ##
- # get_ticket: Retrieve a ticket.
- #
- # This operation is not supported as part of a slice manager
- #
- # @param cred credential string
- # @param name name of the slice to retrieve a ticket for
- # @param rspec resource specification dictionary
- #
-
- def get_ticket(self, cred, name, rspec):
- return anything
-
- ##
- # redeem_ticket: Redeem a ticket.
- #
- # This operation is not supported as part of a slice manager
- #
- # @param cred credential string
- # @param name name of the slice to retrieve a ticket for
- # @param rspec resource specification dictionary
- #
-
- def redeem_ticket(self, cred, name, rspec):
- return anything
-
- ##
- # stop_slice: Stop a slice.
- #
- # @param cred a credential identifying the caller (callerGID) and the slice
- # (objectGID)
-
- def stop_slice(self, cred_str):
- self.decode_authentication(cred_str, "stopslice")
- slicename = hrn_to_pl_slicename(self.object_gid.get_hrn())
- # call stop_slice on each aggregate that hosts the slice
-
- ##
- # start_slice: Start a slice.
- #
- # @param cred a credential identifying the caller (callerGID) and the slice
- # (objectGID)
-
- def start_slice(self, cred_str):
- self.decode_authentication(cred_str, "startslice")
- slicename = hrn_to_pl_slicename(self.object_gid.get_hrn())
- # call start_slice on each aggregate that hosts the slice
-
- ##
- # reset_slice: Reset a slice.
- #
- # @param cred a credential identifying the caller (callerGID) and the slice
- # (objectGID)
-
- def reset_slice(self, cred_str):
- self.decode_authentication(cred_str, "resetslice")
- slicename = hrn_to_pl_slicename(self.object_gid.get_hrn())
- # call reset_slice on each aggregate that hosts the slice
-
- ##
- # delete_slice: Delete a slice.
- #
- # @param cred a credential identifying the caller (callerGID) and the slice
- # (objectGID)
-
- def delete_slice(self, cred_str):
- self.decode_authentication(cred_str, "deleteslice")
- slicename = hrn_to_pl_slicename(self.object_gid.get_hrn())
- # call delete_slice on each aggregate that hosts the slice
-
- ##
- # get_slice_resources: Get resources allocated to slice
- #
- # @param cred a credential identifying the caller (callerGID) and the slice
- # (objectGID)
-
- def get_slice_resources(self, cred_str):
- self.decode_authentication(cred_str, "getsliceresources")
- slicename = hrn_to_pl_slicename(self.object_gid.get_hrn())
- # call get_resources on each aggregate that hosts the slice
- # merge returned netspecs into one big rspec
-
- ##
- # list_slices: List hosted slices.
- #
- # @param cred a credential identifying the caller (callerGID)
-
- def list_slices(self, cred_str):
- self.decode_authentication(cred_str, "listslices")
- # probably have this information cached, so return that
- # otherwise, call list_slices on all peer aggregates
-
- ##
- # list_nodes: List available nodes.
- #
- # @param cred a credential identifying the caller (callerGID)
- def list_nodes(self, cred_str):
- self.decode_authentication(cred_str, "listslices")
- # probably have this information cached, so return that
- # otherwise, call list_nodes on all peer aggregates
+ # 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)
+
git://git.onelab.eu / sfa.git / commitdiff