X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=plc%2Fslicemgr.py;h=16041e86c8add1283ca1178f4b9aca8bbace959b;hb=1d13395fc4b34cf333dba2a8d722c2616b699b37;hp=a61909a2bb06d3cf8a59a826d7e6d1430e2522b4;hpb=c709d60e154c923ae5386c503f51031c161d344a;p=sfa.git diff --git a/plc/slicemgr.py b/plc/slicemgr.py index a61909a2..16041e86 100644 --- a/plc/slicemgr.py +++ b/plc/slicemgr.py @@ -1,192 +1,342 @@ -## -# 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) +