def _process_leases(cls, leases):
from datetime import datetime
import time
import dateutil.parser
import calendar
ret = list()
try:
for lease in leases:
lease['resource'] = lease.pop('component_id')
lease['slice'] = lease.pop('slice_id')
# UTC YYYY-MM-DD hh:mm:ss -> timestamp
Log.tmp("PARSING - convert UTC %s to timestamp", lease['start_time'])
lease['start_time'] = calendar.timegm(dateutil.parser.parse(lease['start_time']).utctimetuple())
Log.tmp("PARSING - convert UTC to timestamp %s", lease['start_time'])
lease['duration'] = int(lease['duration'])
if 'end_time' in lease:
lease['end_time'] = int(lease['end_time'])
if not 'end_time' in lease and set(['start_time', 'duration']) <= set(lease.keys()):
lease['end_time'] = lease['start_time'] + lease['duration'] * cls.get_grain()
elif not 'duration' in lease and set(lease.keys()) <= set(['start_time', 'end_time']):
lease['duration'] = (lease['end_time'] - lease['start_time']) / cls.get_grain()
# XXX GRANULARITY Hardcoded for the moment
if 'granularity' not in lease:
lease['granularity'] = cls.get_grain()
ret.append(lease)
except Exception, e:
print "EEE::", e
import traceback
traceback.print_exc()
def send(self, record):
"""
\brief calls the parent callback with the record passed in parameter
"""
if self.identifier:
Log.record("[#%04d] [ %r ]" % (self.identifier, record))
self.callback(record)
def import_file_h(self, directory, platform, gateway_type):
"""
Import a .h file (see manifold.metadata/*.h)
Args:
directory: A String instance containing directory storing the .h files
Example: STATIC_ROUTES_DIR = "/usr/share/manifold/metadata/"
platform: A String instance containing the name of the platform
Examples: "ple", "senslab", "tdmi", "omf", ...
gateway_types: A String instnace containing the type of the Gateway
Examples: "SFA", "XMLRPC", "MaxMind", "tdmi"
See:
sqlite3 /var/myslice/db.sqlite
> select gateway_type from platform;
Returns:
A list of Announce instances, each Announce embeds a Table instance.
This list may be empty.
"""
# Check path
filename = os.path.join(directory, "%s.h" % gateway_type)
if not os.path.exists(filename):
filename = os.path.join(directory,
"%s-%s.h" % (gateway_type, platform))
if not os.path.exists(filename):
Log.debug(
"Metadata file '%s' not found (platform = %r, gateway_type = %r)"
% (filename, platform, gateway_type))
return []
# Read input file
Log.debug("Platform %s: Processing %s" % (platform, filename))
return import_file_h(filename, platform)
def parse_manifest(cls, rspec, rspec_version = 'GENI 3', slice_urn = None, start_time = None):
rspec = RSpec(rspec, version=rspec_version)
_resources = cls._get_resources(rspec)
_nodes = cls._get_nodes(rspec)
# XXX Not supported yet
#_channels = cls._get_channels(rspec)
#_links = cls._get_links(rspec)
_leases = cls._get_leases(rspec)
# XXX Until WiLab supports Leases
end_time = cls._get_expiration(rspec)
if start_time is None:
start_time = 1388530800
resources = list()
resources.extend(cls._process_resources(_resources))
resources.extend(cls._process_nodes(_nodes))
#resources.extend(cls._process_channels(_channels))
#resources.extend(cls._process_links(_links))
Log.warning("XXX Until WiLab supports Leases")
# XXX Generate Leases based on the Resources instead of Leases
leases = cls._process_leases(resources, slice_urn, start_time, end_time)
return {'resource': resources, 'lease': leases }
def _process_lease(cls, lease):
# Keep only necessary information in leases
new_lease = dict()
authority = 'urn:publicid:IDN+wilab2.ilabt.iminds.be+authority+cm'
if (not 'component_manager_id' in lease) or (lease['component_manager_id'] != authority):
Log.warning("Authority is not WiLab - Ignore lease = ",lease)
#return None
new_lease['resource'] = lease.pop('component_id')
new_lease['lease_id'] = None
new_lease['slice'] = lease.pop('slice_urn')
new_lease['start_time'] = int(lease['start_time'])
new_lease['duration'] = int(lease['duration'])
if 'end_time' in lease:
new_lease['end_time'] = int(lease['end_time'])
if not 'end_time' in lease and set(['start_time', 'duration']) <= set(lease.keys()):
new_lease['end_time'] = lease['start_time'] + lease['duration'] * cls.get_grain()
elif not 'duration' in lease and set(lease.keys()) <= set(['start_time', 'end_time']):
new_lease['duration'] = (lease['end_time'] - lease['start_time']) / cls.get_grain()
# XXX GRANULARITY Hardcoded for the moment
if 'granularity' not in lease:
new_lease['granularity'] = cls.get_grain()
else:
new_lease['granularity'] = lease['granularity']
return new_lease
def make_sub_graph(metadata, relevant_fields):
"""
\brief Create a reduced graph based on g.
We only keep vertices having a key in relevant_fields
\param g A DiGraph instance (the full 3nf graph)
\param relevant_fields A dictionnary {Table: Fields}
indicating for each Table which Field(s) are relevant.
\return The corresponding sub-3nf-graph
"""
g = metadata.graph
sub_graph = DiGraph()
copy = dict()
vertices_to_keep = set(relevant_fields.keys())
# Copy relevant vertices from g
for u in vertices_to_keep:
copy_u = Table.make_table_from_fields(u, relevant_fields[u])
copy[u] = copy_u
sub_graph.add_node(copy_u) # no data on nodes
# Copy relevant arcs from g
for u, v in g.edges():
try:
copy_u, copy_v = copy[u], copy[v]
except:
continue
sub_graph.add_edge(copy_u, copy_v, deepcopy(g.edge[u][v]))
Log.debug("Adding copy of : %s" % metadata.print_arc(u, v))
return sub_graph
def __init__(self, allowed_capabilities = None):
"""
Create an Interface instance.
Args:
platforms: A list of Platforms.
allowed_capabilities: A Capabilities instance or None
"""
# Register the list of Gateways
Log.info("Registering gateways")
register_gateways()
# self.platforms is list(dict) where each dict describes a platform.
# See platform table in the Storage.
self.platforms = Storage.execute(Query().get("platform").filter_by("disabled", "=", False)) #, format = "object")
# self.allowed_capabilities is a Capabilities instance (or None)
self.allowed_capabilities = allowed_capabilities
# self.data is {String : list(Announce)} dictionnary mapping each
# platform name (= namespace) with its corresponding Announces.
self.metadata = dict()
# self.gateways is a {String : Gateway} which maps a platform name to
# the appropriate Gateway instance.
self.gateways = dict()
self.policy = Policy(self)
self.boot()
def get_dialect_and_field_info(self, table):
t = self.config[table]
filename = t['filename']
with open(filename, 'rb') as f:
sample = f.read(1024)
dialect = csv.Sniffer().sniff(sample)
self.has_headers[table] = csv.Sniffer().has_header(sample)
HAS_FIELDS_OK, HAS_FIELDS_KO, HAS_FIELDS_ERR = range(1, 4)
HAS_TYPES_OK, HAS_TYPES_KO, HAS_TYPES_ERR = range(1, 4)
has_fields = HAS_FIELDS_KO
has_types = HAS_TYPES_KO
if isinstance(t, dict):
if 'fields' in t:
try:
field_names, field_types = [], []
for name, type in t['fields']:
field_names.append(name)
has_fields = HAS_FIELDS_OK
field_types.append(type)
has_types = HAS_TYPES_OK
except Exception, e:
Log.warning(
"Wrong format for fields in platform configuration")
has_fields = HAS_FIELDS_ERR
has_types = HAS_TYPES_ERR
def manifold_to_sfa_leases(cls, leases, slice_urn):
from datetime import datetime
sfa_leases = []
for lease in leases:
sfa_lease = dict()
# sfa_lease_id =
sfa_lease['component_id'] = lease['resource']
sfa_lease['slice_id'] = slice_urn
sfa_lease['start_time'] = lease['start_time']
grain = cls.get_grain() # in seconds
min_duration = cls.get_min_duration() # in seconds
# We either need end_time or duration
# end_time is choosen if both are specified !
if 'end_time' in lease:
sfa_lease['end_time'] = lease['end_time']
duration = (int(lease['end_time']) - int(lease['start_time'])) / grain
if duration < min_duration:
raise Exception, 'duration < min_duration'
sfa_lease['duration'] = duration
elif 'duration' in lease:
sfa_lease['duration'] = lease['duration']
sfa_lease['end_time'] = lease['start_time'] + lease['duration']
else:
raise Exception, 'Lease not specifying neither end_time nor duration'
# timestamp -> UTC YYYY-MM-DD hh:mm:ss
Log.tmp("manifold to sfa - convert timestamp %s to UTC", sfa_lease['start_time'])
sfa_lease['start_time'] = datetime.utcfromtimestamp(int(sfa_lease['start_time'])).strftime('%Y-%m-%d %H:%M:%S')
Log.tmp("manifold to sfa - convert timestamp to UTC %s", sfa_lease['start_time'])
sfa_lease['end_time'] = datetime.utcfromtimestamp(int(sfa_lease['end_time'])).strftime('%Y-%m-%d %H:%M:%S')
sfa_leases.append(sfa_lease)
return sfa_leases
def optimize_projection(self, fields):
"""
Propagate a SELECT clause through a FROM Node.
Args:
fields: A set of String instances (queried fields).
"""
if self.capabilities.projection or self.capabilities.fullquery:
self.query.select().select(fields)
if self.capabilities.projection:
# Push fields into the From node
return self
else:
# Provided fields is set to None if it corresponds to SELECT *
provided_fields = self.get_query().get_select()
# Test whether this From node can return every queried Fields.
if provided_fields and fields - provided_fields:
Log.warning(
"From::optimize_projection: some requested fields (%s) are not provided by {%s} From node. Available fields are: {%s}"
% (', '.join(list(fields - provided_fields)),
self.get_query().get_from(), ', '.join(
list(provided_fields))))
# If this From node returns more Fields than those explicitely queried
# (because the projection capability is not enabled), create an additional
# Projection Node above this From Node in order to guarantee that
# we only return queried fields
if not provided_fields or provided_fields - fields:
return Projection(self, fields)
#projection.query = self.query.copy().filter_by(filter) # XXX
return self
def execute_query(self, namespace, query, annotations, is_deferred=False):
if annotations:
user = annotations.get('user', None)
else:
user = None
# Code duplication with Interface() class
if namespace is not None:
allowed_platforms = [
p['platform'] for p in self.platforms
if p['platform'] == namespace
]
else:
allowed_platforms = [p['platform'] for p in self.platforms]
qp = QueryPlan()
qp.build(query, self.g_3nf, allowed_platforms,
self.allowed_capabilities, user)
Log.tmp("QUERY PLAN")
qp.dump()
self.instanciate_gateways(qp, user)
Log.info("QUERY PLAN:\n%s" % (qp.dump()))
return self.execute_query_plan(namespace, query, annotations, qp,
is_deferred)
def register(package):
prefix = package.__name__ + "."
for importer, modname, ispkg in pkgutil.iter_modules(package.__path__, prefix):
try:
module = __import__(modname, fromlist="dummy")
except Exception, e:
Log.info("Could not load %s : %s" % (modname, e))
def right_callback(self, record):
"""
\brief Process records received from the right child
\param record A dictionary representing the received record
"""
if record.is_last():
self._on_right_done()
return
# Skip records missing information necessary to join
#DEPRECATED| if self.predicate.value not in record or not record[self.predicate.value]:
#Log.tmp("%s <= %s" %(set(self.predicate.get_value()) , set(record.keys())))
if not set([self.predicate.get_value()]) <= set(record.keys()) \
or Record.is_empty_record(record, set([self.predicate.get_value()])):
Log.warning("Missing LEFTJOIN predicate %s in right record %r: ignored" % \
(self.predicate, record))
return
# We expect to receive information about keys we asked, and only these,
# so we are confident the key exists in the map
# XXX Dangers of duplicates ?
key = Record.get_value(record, self.predicate.value)
left_records = self.left_map.get(key, None)
if left_records:
for left_record in self.left_map[key]:
left_record.update(record)
self.send(left_record)
del self.left_map[key]
def boot(self):
"""
Boot the Interface (prepare metadata, etc.).
"""
assert isinstance(self.platforms, list), "Invalid platforms"
for platform in self.platforms:
# Get platform configuration
platform_config = platform['config']
if platform_config:
platform_config = json.loads(platform_config)
platform_name = platform['platform']
args = [None, platform_name, None, platform_config, {}, None]
gateway = Gateway.get(platform['gateway_type'])(*args)
try:
announces = gateway.get_metadata()
except Exception, e:
# ROUTERV2
Log.warning("Cannot get metadata for platform %s: %s" % (platform_name, e))
# XXX Disable platform ?
announces = list()
self.metadata[platform_name] = list()
for announce in announces:
self.metadata[platform_name].append(announce)
def dump(self):
"""
(Debug function). Dump the ExploreTask embeded in this Stack
using the logger.
"""
for priority in [TASK_11, TASK_1Nsq, TASK_1N]:
Log.tmp("PRIO %d : %r" % (priority, self.tasks[priority]))
def __init__(self,
router=None,
platform=None,
query=None,
config=None,
user_config=None,
user=None,
format='record'):
assert format in ['record', 'object'
], 'Unknown return format for gateway SQLAlchemy'
if format == 'object':
Log.tmp("Objects should not be used")
self.format = format
super(SQLAlchemyGateway, self).__init__(router, platform, query,
config, user_config, user)
from manifold.models.base import Base
Base = declarative_base(cls=Base)
# Models
from manifold.models.platform import Platform as DBPlatform
from manifold.models.user import User as DBUser
from manifold.models.account import Account as DBAccount
from manifold.models.session import Session as DBSession
engine = create_engine(config['url'], echo=False, pool_recycle=3600)
Base.metadata.create_all(engine)
Session = sessionmaker(bind=engine)
self.db = Session()
def local_query_get(self, query):
#
# XXX How are we handling subqueries
#
fields = query.fields
# XXX else tap into metadata
cls = self.map_object[query.object]
# Transform a Filter into a sqlalchemy expression
_filters = get_sqla_filters(cls, query.filters)
_fields = xgetattr(cls, query.fields) if query.fields else None
res = db.query(*_fields) if _fields else db.query(cls)
if query.filters:
for _filter in _filters:
res = res.filter(_filter)
# Do we need to limit to the user's own results
try:
if self.user and cls.restrict_to_self and self.user[
'email'] != ADMIN_USER:
res = res.filter(cls.user_id == self.user['user_id'])
except AttributeError:
pass
try:
tuplelist = res.all()
return tuplelist
except SQLAlchemyError, e:
Log.error("SQLAlchemyError trying to rollback db session: %s" % e)
db.rollback()
self.local_query_get(query)
return list()
def remove_pid_file(self):
"""
\brief Remove the pid file (internal usage)
"""
# The lock file is implicitely released while removing the pid file
Log.debug("Removing %s" % Options().pid_filename)
if os.path.exists(Options().pid_filename) == True:
os.remove(Options().pid_filename)
def xrn_hook(resource):
urn = resource.get('component_id')
if not urn:
Log.warning('No urn !!!')
return resource
resource['urn'] = urn
resource['hrn'] = urn_to_hrn(urn)[0]
return resource
def main():
XMLRPCDaemon.init_options()
Log.init_options()
Daemon.init_options()
DBStorage.init_options()
Options().parse()
XMLRPCDaemon().start()
def remove_pid_file(self):
"""
\brief Remove the pid file (internal usage)
"""
# The lock file is implicitely released while removing the pid file
Log.debug("Removing %s" % Options().pid_filename)
if os.path.exists(Options().pid_filename) == True:
os.remove(Options().pid_filename)
def callback_error(self, error):
"""
(Internal usage) See ManifoldGateway::receive_impl.
Args:
packet: A QUERY Packet.
error: The corresponding error message.
"""
Log.error("Error during Manifold call: %r" % error)
self.send(LastRecord())
def inject_at(self, query):
"""
Update From Nodes of the QueryPlan in order to take into account AT
clause involved in a user Query.
Args:
query: The Query issued by the user.
"""
Log.warning("HARDCODED: AT injection in FROM Nodes: %r" % self.froms)
for from_node in self.froms:
from_node.query.timestamp = query.get_timestamp()
def delete_cache(self, annotations=None):
try:
Log.tmp("----------> DELETE CACHE PER USER <------------")
Log.tmp(annotations)
if annotations is not None:
user_id = annotations['user']['user_id']
if user_id in self._cache_user:
del self._cache_user[user_id]
except:
import traceback
traceback.print_exc()
def get_slicename(self, filters):
# XXX If slicename is not in WHERE of the Query it will cause an error
filters = {'value': filters['slice_hrn']}
fields = ['name']
plc_api = xmlrpclib.ServerProxy(API_URL, allow_none=True)
result = plc_api.GetSliceTags(self._get_auth(), filters, fields)
if not result:
Log.warning("No Slice name for this hrn ", filters)
return None
else:
return result[0]['name']
def _process_resources(cls, resources):
ret = list()
for resource in resources:
Log.tmp("LOIC - SFAWrap parser type = %s , resource = %r" % (type(resource),resource))
new_resource = cls._process_resource(resource)
if not new_resource:
continue
# We suppose we have children of dict that cannot be serialized
# with xmlrpc, let's make dict
ret.append(cls.make_dict_rec(new_resource))
return ret
def start(self):
"""
Fetch records stored in the postgresql database according to self.query
"""
Log.tmp("Received: %s" % self.query)
# Results of the query (TODO)
rows = []
# Sending rows to parent processing node in the AST
map(self.send, Records(rows))
self.send(LastRecord())
def build_rspec(cls,
slice_hrn,
resources,
leases,
flowspace,
vms,
rspec_version=None):
Log.warning("NitosBroker Parser build")
rspec = []
cls.rspec_add_header(rspec)
lease_map = cls.rspec_add_leases(rspec, leases)
cls.rspec_add_resources(rspec, resources, lease_map)
cls.rspec_add_footer(rspec)
return "\n".join(rspec)
def get_cache(self, annotations=None):
user = annotations.get('user')
user_id = user.get('user_id') if user else None
if not user_id:
# Use global cache
Log.warning("Use of global cache for query, annotations=%r" %
(annotations, ))
return self._cache
# Use per-user cache
if user_id not in self._cache_user:
self._cache_user[user_id] = Cache()
return self._cache_user[user_id]
def get_location(cls, city):
location = None
try:
#from geopy.geocoders import Nominatim
#geolocator = Nominatim()
#from geopy.geocoders import GeoNames
#geolocator = GeoNames()
from geopy.geocoders import GoogleV3
geolocator = GoogleV3()
location = geolocator.geocode(city)
except Exception, e:
Log.warning("geopy.geocoders failed to get coordinates for city = ",city)
Log.warning(e)
def make_lock_file(self):
"""
\brief Prepare the lock file required to manage the pid file
Initialize Options().lock_file
"""
if Options().pid_filename and Options().no_daemon == False:
Log.debug("Daemonizing using pid file '%s'" % Options().pid_filename)
Options().lock_file = lockfile.FileLock(Options().pid_filename)
if Options().lock_file.is_locked() == True:
log_error("'%s' is already running ('%s' is locked)." % (Options().get_name(), Options().pid_filename))
self.terminate()
Options().lock_file.acquire()
else:
Options().lock_file = None
def left_callback(self, record):
"""
\brief Process records received by the left child
\param record A dictionary representing the received record
"""
if record.is_last():
# left_done. Injection is not the right way to do this.
# We need to insert a filter on the key in the right member
predicate = Predicate(self.predicate.get_value(), included,
self.left_map.keys())
if self.right.get_query().action == ACTION_CREATE:
# XXX If multiple insert, we need to match the right ID with the
# right inserted items
if len(self.left_map.keys()) > 1:
raise NotImplemented
# Pass the id as a param
keys = self.left_map.keys()
if not keys:
# No JOIN possible
self.left_done = True
self._on_right_done()
return
key = self.left_map.keys()[0]
query = self.right.get_query()
query.params[self.predicate.get_value()] = key
else: # pass the id as a filter which is the normal behaviour
self.right = self.right.optimize_selection(
Filter().filter_by(predicate))
self.right.set_callback(
self.right_callback) # already done in __init__ ?
self.left_done = True
self.right.start()
return
# Directly send records missing information necessary to join
# XXXX !!! XXX XXX XXX
if not Record.has_fields(record, self.predicate.get_field_names()):
Log.warning("Missing LEFTJOIN predicate %s in left record %r : forwarding" % \
(self.predicate, record))
self.send(record)
# Store the result in a hash for joining later
hash_key = Record.get_value(record, self.predicate.key)
if not hash_key in self.left_map:
self.left_map[hash_key] = []
self.left_map[hash_key].append(record)
def check_python_daemon(self):
"""
\brief Check whether python-daemon is properly installed
\return True if everything is file, False otherwise
"""
# http://www.python.org/dev/peps/pep-3143/
ret = False
try:
import daemon
getattr(daemon, "DaemonContext")
ret = True
except AttributeError, e:
print e
# daemon and python-daemon conflict with each other
Log.critical("Please install python-daemon instead of daemon. Remove daemon first.")
def start(self):
"""
\brief Start the daemon
"""
# Check whether daemon module is properly installed
if self.check_python_daemon() == False:
self.terminate()
import daemon
# Prepare Options().lock_file
self.make_lock_file()
# Prepare the daemon context
dcontext = daemon.DaemonContext(
detach_process = (not Options().no_daemon),
working_directory = Options().working_directory,
pidfile = Options().lock_file if not Options().no_daemon else None,
stdin = sys.stdin,
stdout = sys.stdout,
stderr = sys.stderr,
uid = Options().uid,
gid = Options().gid,
files_preserve = Log().files_to_keep
)
# Prepare signal handling to stop properly if the daemon is killed
# Note that signal.SIGKILL can't be handled:
# http://crunchtools.com/unixlinux-signals-101/
dcontext.signal_map = {
signal.SIGTERM : self.signal_handler,
signal.SIGQUIT : self.signal_handler,
signal.SIGINT : self.signal_handler
}
if Options().debugmode == True:
self.main()
else:
with dcontext:
self.make_pid_file()
try:
self.main()
except Exception, why:
Log.error("Unhandled exception in start: %s" % why)
def stop(self):
Log.debug("Stopping '%s'" % self.daemon_name)
