class SFAAPI(object):
"""
- API for quering the SFA service.
+ API for quering the SFA service. It uses Sfi class from the tool sfi client.
"""
def __init__(self, sfi_user, sfi_auth, sfi_registry, sfi_sm, private_key, ec,
batch, rtype, timeout):
self._resources_cache = None
self._already_cached = False
self._ec = ec
+ self.apis = 1
if batch:
self._testbed_res = rtype
self._set_blacklist()
def _set_blacklist(self):
+ """
+ Initialize the blacklist with previous nodes blacklisted, in
+ previous runs.
+ """
nepi_home = os.path.join(os.path.expanduser("~"), ".nepi")
plblacklist_file = os.path.join(nepi_home, "plblacklist.txt")
with open(plblacklist_file, 'r') as f:
self._blacklist.add(host)
def _get_total_res(self):
+ """
+ Get the total amount of resources instanciated using this API,
+ to be able to add them using the same Allocate and Provision
+ call at once. Specially for Wilabt testbed that doesn't allow
+ to add slivers after the slice already has some.
+ """
rms = list()
res_gids = self._ec.resources
for gid in res_gids:
rms.append(rm)
return rms
- def _sfi_exec_method(self, command, slicename=None, rspec=None, urn=None):
+ def _sfi_exec_method(self, command, slicename=None, rspec=None, urn=None, action=None):
"""
- Execute sfi method.
+ Execute sfi method, which correspond to SFA call. It can be the following
+ calls: Describe, Delete, Allocate, Provision, ListResources.
"""
- if command in ['describe', 'delete', 'allocate', 'provision']:
+ if command in ['describe', 'delete', 'allocate', 'provision', 'action']:
if not slicename:
raise TypeError("The slice hrn is expected for this method %s" % command)
if command == 'allocate' and not rspec:
args_list = [slicename]
if command != 'delete':
args_list = args_list + ['-o', '/tmp/rspec_output']
+ if command == 'action':
+ args_list = [slicename, action]
elif command == 'resources':
args_list = ['-o', '/tmp/rspec_output']
resources_urn = self._get_resources_urn(resources_hrn_new)
- rspec = self.rspec_proc.build_sfa_rspec(slicename, resources_urn, leases)
+ rspec = self.rspec_proc.build_sfa_rspec(slicename, resources_urn, None, leases)
f = open("/tmp/rspec_input.rspec", "w")
f.truncate(0)
f.write(rspec)
raise RuntimeError("Fail to provision resource for slice %s" % slicename)
return True
- def add_resource_to_slice_batch(self, slicename, resource_hrn, leases=None):
+ def add_resource_to_slice_batch(self, slicename, resource_hrn, properties=None, leases=None):
"""
Method to add all resources together to the slice. Previous deletion of slivers.
+ Specially used for wilabt that doesn't allow to add more resources to the slice
+ after some resources are added. Every sliver have to be deleted and the batch
+ has to be added at once.
"""
- # Specially used for wilabt that doesn't allow to add more resources to the slice
- # after some resources are added. Every sliver have to be deleted and the batch
- # has to be added at once.
self._count += 1
self._slice_resources_batch.append(resource_hrn)
resources_hrn_new = list()
self._sfi_exec_method('delete', slicename)
# Re implementing urn from hrn because the library sfa-common doesn't work for wilabt
resources_urn = self._get_urn(resources_hrn_new)
- rspec = self.rspec_proc.build_sfa_rspec(slicename, resources_urn, leases)
-
+ rspec = self.rspec_proc.build_sfa_rspec(slicename, resources_urn, properties, leases)
f = open("/tmp/rspec_input.rspec", "w")
f.truncate(0)
f.write(rspec)
try:
self._log.debug("Provisioning resources in slice %s" % slicename)
self._sfi_exec_method('provision', slicename)
+ self._sfi_exec_method('action', slicename=slicename, action='geni_start')
except:
raise RuntimeError("Fail to provision resource for slice %s" % slicename)
return True
def remove_resource_from_slice(self, slicename, resource_hrn, leases=None):
"""
- Get the list of resources' urn, build the rspec string and call the allocate
- and provision method.
+ Remove slivers from slice. Currently sfi doesn't support removing particular
+ slivers.
"""
resource_urn = self._get_resources_urn([resource_hrn]).pop()
with self.lock_slice:
def remove_all_from_slice(self, slicename):
"""
De-allocate and de-provision all slivers of the named slice.
+ Currently sfi doesn't support removing particular
+ slivers, so this method works only for removing every sliver. Setting the
+ resource_hrn parameter is not necessary.
"""
with self.lock_slice:
try:
return resources_urn
def blacklist_resource(self, resource_hrn):
+ """
+ Adding resource_hrn to blacklist, and taking
+ the resource from the reserved list.
+ """
with self.lock_blist:
self._blacklist.add(resource_hrn)
with self.lock_resv:
self._reserved.remove(resource_hrn)
def blacklisted(self, resource_hrn):
+ """
+ Check if the resource is in the blacklist.
+ """
with self.lock_blist:
if resource_hrn in self._blacklist:
return True
return False
def reserve_resource(self, resource_hrn):
+ """
+ Add resource to the reserved list.
+ """
self._reserved.add(resource_hrn)
def reserved(self, resource_hrn):
+ """
+ Check that the resource in not reserved.
+ """
with self.lock_resv:
if resource_hrn in self._reserved:
return True
self.reserve_resource(resource_hrn)
return False
+ def release(self):
+ """
+ Remove hosts from the reserved and blacklist lists, and in case
+ the persist attribute is set, it saves the blacklisted hosts
+ in the blacklist file.
+ """
+ self.apis -= 1
+ if self.apis == 0:
+ blacklist = self._blacklist
+ self._blacklist = set()
+ self._reserved = set()
+# if self._ecobj.get_global('PlanetlabSfaNode', 'persist_blacklist'):
+# if blacklist:
+# to_blacklist = list()
+# hostnames = self.get_nodes(list(blacklist), ['hostname'])
+# for hostname in hostnames:
+# to_blacklist.append(hostname['hostname'])
+#
+# nepi_home = os.path.join(os.path.expanduser("~"), ".nepi")
+# plblacklist_file = os.path.join(nepi_home, "plblacklist.txt")
+#
+# with open(plblacklist_file, 'w') as f:
+# for host in to_blacklist:
+# f.write("%s\n" % host)
+#
+
+
class SFAAPIFactory(object):
"""
API Factory to manage a map of SFAAPI instances as key-value pairs, it
api = SFAAPI(sfi_user, sfi_auth, sfi_registry, sfi_sm, private_key,
ec, batch, rtype, timeout)
cls._apis[key] = api
+ else:
+ api.apis += 1
return api
git://git.onelab.eu / nepi.git / blobdiff