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vnc_cfg_ifmap.py
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vnc_cfg_ifmap.py
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#
# Copyright (c) 2013 Juniper Networks, Inc. All rights reserved.
#
"""
Layer that transforms VNC config objects to ifmap representation
"""
from cfgm_common.zkclient import ZookeeperClient, IndexAllocator
from gevent import ssl, monkey
monkey.patch_all()
import gevent
import gevent.event
from gevent.queue import Queue, Empty
import time
from pprint import pformat
from lxml import etree
import StringIO
import socket
from netaddr import IPNetwork
from cfgm_common.uve.vnc_api.ttypes import *
from cfgm_common import ignore_exceptions
from cfgm_common.ifmap.client import client
from cfgm_common.ifmap.request import NewSessionRequest, PublishRequest
from cfgm_common.ifmap.id import Identity
from cfgm_common.ifmap.operations import PublishUpdateOperation,\
PublishDeleteOperation
from cfgm_common.ifmap.response import newSessionResult
from cfgm_common.ifmap.metadata import Metadata
from cfgm_common.imid import escape
from cfgm_common.exceptions import ResourceExhaustionError, ResourceExistsError
from cfgm_common.vnc_cassandra import VncCassandraClient
from cfgm_common.vnc_kombu import VncKombuClient
from cfgm_common.utils import cgitb_hook
import copy
from cfgm_common import jsonutils as json
import uuid
import datetime
import pycassa
import pycassa.util
import pycassa.cassandra.ttypes
from pycassa.system_manager import *
from pycassa.util import *
import signal, os
#from cfgm_common import vnc_type_conv
from provision_defaults import *
import cfgm_common.imid
from cfgm_common.exceptions import *
from vnc_quota import *
from pysandesh.connection_info import ConnectionState
from pysandesh.gen_py.process_info.ttypes import ConnectionStatus
from pysandesh.gen_py.process_info.ttypes import ConnectionType as ConnType
from pysandesh.gen_py.sandesh.ttypes import SandeshLevel
from sandesh_common.vns.constants import USERAGENT_KEYSPACE_NAME
from sandesh.traces.ttypes import DBRequestTrace, MessageBusNotifyTrace, \
IfmapTrace
import logging
logger = logging.getLogger(__name__)
@ignore_exceptions
def get_trace_id():
try:
req_id = gevent.getcurrent().trace_request_id
except Exception:
req_id = 'req-%s' %(str(uuid.uuid4()))
gevent.getcurrent().trace_request_id = req_id
return req_id
# end get_trace_id
@ignore_exceptions
def trace_msg(trace_obj, trace_name, sandesh_hdl, error_msg=None):
if trace_obj:
if error_msg:
trace_obj.error = error_msg
trace_obj.trace_msg(name=trace_name, sandesh=sandesh_hdl)
# end trace_msg
class VncIfmapClient(object):
def handler(self, signum, frame):
file = open("/tmp/api-server-ifmap-cache.txt", "w")
file.write(pformat(self._id_to_metas))
file.close()
def __init__(self, db_client_mgr, ifmap_srv_ip, ifmap_srv_port,
uname, passwd, ssl_options):
self._ifmap_srv_ip = ifmap_srv_ip
self._ifmap_srv_port = ifmap_srv_port
self._username = uname
self._password = passwd
self._ssl_options = ssl_options
self._dequeue_greenlet = None
self._CONTRAIL_XSD = "http://www.contrailsystems.com/vnc_cfg.xsd"
self._IPERMS_NAME = "id-perms"
self._NAMESPACES = {
'env': "http://www.w3.org/2003/05/soap-envelope",
'ifmap': "http://www.trustedcomputinggroup.org/2010/IFMAP/2",
'meta':
"http://www.trustedcomputinggroup.org/2010/IFMAP-METADATA/2",
'contrail': self._CONTRAIL_XSD
}
self._db_client_mgr = db_client_mgr
self._sandesh = db_client_mgr._sandesh
ConnectionState.update(conn_type = ConnType.IFMAP,
name = 'IfMap', status = ConnectionStatus.INIT, message = '',
server_addrs = ["%s:%s" % (ifmap_srv_ip, ifmap_srv_port)])
self._conn_state = ConnectionStatus.INIT
self.reset()
# Set the signal handler
signal.signal(signal.SIGUSR2, self.handler)
self._init_conn()
self._publish_config_root()
self._health_checker_greenlet = gevent.spawn(self._health_checker)
# end __init__
def object_alloc(self, obj_type, parent_type, fq_name):
res_type = obj_type.replace('_', '-')
my_fqn = ':'.join(fq_name)
parent_fqn = ':'.join(fq_name[:-1])
my_imid = 'contrail:%s:%s' %(res_type, my_fqn)
if parent_fqn:
if parent_type is None:
err_msg = "Parent: %s type is none for: %s" % (parent_fqn,
my_fqn)
return False, (409, err_msg)
parent_imid = 'contrail:' + parent_type + ':' + parent_fqn
else: # parent is config-root
parent_imid = 'contrail:config-root:root'
# Normalize/escape special chars
my_imid = escape(my_imid)
parent_imid = escape(parent_imid)
return True, (my_imid, parent_imid)
# end object_alloc
def object_set(self, res_type, my_imid, existing_metas, obj_dict):
obj_class = self._db_client_mgr.get_resource_class(res_type)
update = {}
# Properties Meta
for prop_field in obj_class.prop_fields:
field = obj_dict.get(prop_field)
if field is None:
continue
# construct object of xsd-type and get its xml repr
# e.g. virtual_network_properties
prop_field_types = obj_class.prop_field_types[prop_field]
is_simple = not prop_field_types['is_complex']
prop_type = prop_field_types['xsd_type']
# e.g. virtual-network-properties
prop_meta = obj_class.prop_field_metas[prop_field]
if is_simple:
norm_str = escape(str(field))
meta = Metadata(prop_meta, norm_str,
{'ifmap-cardinality':'singleValue'}, ns_prefix = 'contrail')
if (existing_metas and prop_meta in existing_metas and
str(existing_metas[prop_meta][0]['meta']) == str(meta)):
# no change
pass
else:
self._update_id_self_meta(update, meta)
else: # complex type
prop_cls = cfgm_common.utils.str_to_class(prop_type,
__name__)
buf = cStringIO.StringIO()
# perms might be inserted at server as obj.
# obj construction diff from dict construction.
if isinstance(field, dict):
prop_cls(**field).exportChildren(
buf, level=1, name_=prop_meta, pretty_print=False)
elif isinstance(field, list):
for elem in field:
if isinstance(elem, dict):
prop_cls(**elem).exportChildren(
buf, level=1, name_=prop_meta, pretty_print=False)
else:
elem.exportChildren(
buf, level=1, name_=prop_meta, pretty_print=False)
else: # object
field.exportChildren(
buf, level=1, name_=prop_meta, pretty_print=False)
prop_xml = buf.getvalue()
buf.close()
meta = Metadata(prop_meta, '',
{'ifmap-cardinality':'singleValue'}, ns_prefix='contrail',
elements=prop_xml)
if (existing_metas and prop_meta in existing_metas and
str(existing_metas[prop_meta][0]['meta']) == str(meta)):
# no change
pass
else:
self._update_id_self_meta(update, meta)
# end for all property types
# References Meta
for ref_field in obj_class.ref_fields:
refs = obj_dict.get(ref_field)
if not refs:
continue
for ref in refs:
ref_fq_name = ref['to']
ref_type, ref_link_type, _ = \
obj_class.ref_field_types[ref_field]
ref_meta = obj_class.ref_field_metas[ref_field]
ref_imid = cfgm_common.imid.get_ifmap_id_from_fq_name(
ref_type, ref_fq_name)
ref_data = ref.get('attr')
if ref_data:
buf = cStringIO.StringIO()
attr_cls = cfgm_common.utils.str_to_class(ref_link_type,
__name__)
attr_cls(**ref_data).exportChildren(
buf, level=1, name_=ref_meta, pretty_print=False)
ref_link_xml = buf.getvalue()
buf.close()
else:
ref_link_xml = ''
meta = Metadata(ref_meta, '',
{'ifmap-cardinality':'singleValue'}, ns_prefix = 'contrail',
elements=ref_link_xml)
self._update_id_pair_meta(update, ref_imid, meta)
# end for all ref types
self._publish_update(my_imid, update)
return (True, '')
# end object_set
def object_create(self, obj_ids, obj_dict):
obj_type = obj_ids['type'].replace('-', '_')
if not 'parent_type' in obj_dict:
# parent is config-root
parent_type = 'config-root'
parent_imid = 'contrail:config-root:root'
else:
parent_type = obj_dict['parent_type']
parent_imid = obj_ids.get('parent_imid', None)
# Parent Link Meta
update = {}
parent_cls = self._db_client_mgr.get_resource_class(parent_type)
parent_link_meta = parent_cls.children_field_metas.get('%ss' %(obj_type))
if parent_link_meta:
meta = Metadata(parent_link_meta, '',
{'ifmap-cardinality':'singleValue'}, ns_prefix = 'contrail')
self._update_id_pair_meta(update, obj_ids['imid'], meta)
self._publish_update(parent_imid, update)
(ok, result) = self.object_set(obj_type, obj_ids['imid'], None, obj_dict)
return (ok, result)
# end object_create
def _object_read_to_meta_index(self, ifmap_id):
# metas is a dict where key is meta-name and val is list of dict of
# form [{'meta':meta}, {'id':id1, 'meta':meta}, {'id':id2, 'meta':meta}]
metas = {}
if ifmap_id in self._id_to_metas:
metas = self._id_to_metas[ifmap_id].copy()
return metas
# end _object_read_to_meta_index
def object_update(self, res_type, ifmap_id, new_obj_dict):
obj_cls = self._db_client_mgr.get_resource_class(res_type)
# read in refs from ifmap to determine which ones become inactive after update
existing_metas = self._object_read_to_meta_index(ifmap_id)
# remove properties that are no longer active
props = obj_cls.prop_field_metas
for prop, meta in props.items():
if meta in existing_metas and new_obj_dict.get(prop) is None:
self._delete_id_self_meta(ifmap_id, 'contrail:'+meta)
# remove refs that are no longer active
delete_list = []
refs = dict((obj_cls.ref_field_metas[rf],
obj_cls.ref_field_types[rf][0])
for rf in obj_cls.ref_fields)
#refs = {'virtual-network-qos-forwarding-class': 'qos-forwarding-class',
# 'virtual-network-network-ipam': 'network-ipam',
# 'virtual-network-network-policy': 'network-policy',
# 'virtual-network-route-table': 'route-table'}
for meta, to_name in refs.items():
old_set = set([m['id'] for m in existing_metas.get(meta, [])])
new_set = set()
to_name_m = to_name.replace('-', '_')
for ref in new_obj_dict.get(to_name_m+'_refs', []):
to_imid = cfgm_common.imid.get_ifmap_id_from_fq_name(to_name,
ref['to'])
new_set.add(to_imid)
for inact_ref in old_set - new_set:
delete_list.append((inact_ref, 'contrail:'+meta))
if delete_list:
self._delete_id_pair_meta_list(ifmap_id, delete_list)
(ok, result) = self.object_set(res_type, ifmap_id, existing_metas, new_obj_dict)
return (ok, result)
# end object_update
def object_delete(self, res_type, obj_ids):
ifmap_id = obj_ids['imid']
parent_imid = obj_ids.get('parent_imid')
existing_metas = self._object_read_to_meta_index(ifmap_id)
meta_list = []
for meta_name, meta_infos in existing_metas.items():
for meta_info in meta_infos:
ref_imid = meta_info.get('id')
if ref_imid is None:
continue
meta_list.append((ref_imid, 'contrail:'+meta_name))
if parent_imid:
# Remove link from parent
meta_list.append((parent_imid, None))
if meta_list:
self._delete_id_pair_meta_list(ifmap_id, meta_list)
# Remove all property metadata associated with this ident
self._delete_id_self_meta(ifmap_id, None)
return (True, '')
# end object_delete
def _init_conn(self):
mapclient = client(("%s" % (self._ifmap_srv_ip),
"%s" % (self._ifmap_srv_port)),
self._username, self._password,
self._NAMESPACES, self._ssl_options)
self._mapclient = mapclient
connected = False
while not connected:
try:
result = mapclient.call('newSession', NewSessionRequest())
connected = True
except socket.error as e:
time.sleep(3)
ConnectionState.update(conn_type = ConnType.IFMAP,
name = 'IfMap', status = ConnectionStatus.UP, message = '',
server_addrs = ["%s:%s" % (self._ifmap_srv_ip,
self._ifmap_srv_port)])
self._conn_state = ConnectionStatus.UP
msg = 'IFMAP connection ESTABLISHED'
self.config_log(msg, level=SandeshLevel.SYS_NOTICE)
mapclient.set_session_id(newSessionResult(result).get_session_id())
mapclient.set_publisher_id(newSessionResult(result).get_publisher_id())
# end _init_conn
def _get_api_server(self):
return self._db_client_mgr._api_svr_mgr
# end _get_api_server
def reset(self, drain_inflight=False):
# Cache of metas populated in ifmap server. Useful in update to find
# what things to remove in ifmap server
self._id_to_metas = {}
if drain_inflight:
while True:
try:
self._queue.get_nowait()
except Empty:
break
# end drained in flight messages
self._queue = Queue(self._get_api_server()._args.ifmap_queue_size)
if self._dequeue_greenlet is None:
self._dequeue_greenlet = gevent.spawn(self._ifmap_dequeue_task)
# end reset
def _publish_config_root(self):
# config-root
buf = cStringIO.StringIO()
perms = Provision.defaults.perms
perms.exportChildren(buf, level=1, pretty_print=False)
id_perms_xml = buf.getvalue()
buf.close()
update = {}
meta = Metadata(self._IPERMS_NAME, '',
{'ifmap-cardinality': 'singleValue'},
ns_prefix='contrail', elements=id_perms_xml)
self._update_id_self_meta(update, meta)
self._publish_update("contrail:config-root:root", update)
# end _publish_config_root
def config_log(self, msg, level):
self._db_client_mgr.config_log(msg, level)
# end config_log
@ignore_exceptions
def _generate_ifmap_trace(self, oper, body):
req_id = get_trace_id()
ifmap_trace = IfmapTrace(request_id=req_id)
ifmap_trace.operation = oper
ifmap_trace.body = body
return ifmap_trace
# end _generate_ifmap_trace
def _publish_to_ifmap_enqueue(self, oper, oper_body, do_trace=True):
# safety check, if we proceed ifmap-server reports error
# asking for update|delete in publish
if not oper_body:
return
self._queue.put((oper, oper_body, do_trace))
# end _publish_to_ifmap_enqueue
def _ifmap_dequeue_task(self):
while True:
try:
self._publish_to_ifmap_dequeue()
except Exception as e:
tb = cfgm_common.utils.detailed_traceback()
self.config_log(tb, level=SandeshLevel.SYS_ERR)
def _publish_to_ifmap_dequeue(self):
def _publish(requests, traces, publish_discovery=False):
ok = True
if requests:
ok, msg = self._publish_to_ifmap(''.join(requests))
for trace in traces:
if ok:
trace_msg(trace, 'IfmapTraceBuf', self._sandesh)
else:
trace_msg(trace, 'IfmapTraceBuf', self._sandesh,
error_msg=msg)
if publish_discovery and ok:
self._get_api_server().publish_ifmap_to_discovery()
# end _publish
while True:
# block until there is data in the queue
(oper, oper_body, do_trace) = self._queue.get()
requests = []
requests_len = 0
traces = []
while True:
# drain the queue till empty or max message size
# or change of oper because ifmap does not like
# different operations in same message
if oper == 'publish_discovery':
_publish(requests, traces, True)
break
if do_trace:
trace = self._generate_ifmap_trace(oper, oper_body)
traces.append(trace)
requests.append(oper_body)
requests_len += len(oper_body)
if (requests_len >
self._get_api_server()._args.ifmap_max_message_size):
_publish(requests, traces)
break
old_oper = oper
try:
(oper, oper_body, do_trace) = self._queue.get_nowait()
if oper != old_oper:
_publish(requests, traces)
requests = []
requests_len = 0
traces = []
continue
except Empty:
_publish(requests, traces)
break
# end _publish_to_ifmap_dequeue
def _publish_to_ifmap(self, oper_body):
try:
not_published = True
retry_count = 0
resp_xml = None
while not_published:
sess_id = self._mapclient.get_session_id()
req_xml = PublishRequest(sess_id, oper_body)
resp_xml = self._mapclient.call('publish', req_xml)
resp_doc = etree.parse(StringIO.StringIO(resp_xml))
err_codes = resp_doc.xpath(
'/env:Envelope/env:Body/ifmap:response/errorResult/@errorCode',
namespaces=self._NAMESPACES)
if err_codes:
if retry_count == 0:
log_str = 'Error publishing to ifmap, req: %s, resp: %s' \
%(req_xml, resp_xml)
self.config_log(log_str, level=SandeshLevel.SYS_ERR)
retry_count = retry_count + 1
result = self._mapclient.call('newSession',
NewSessionRequest())
sess_id = newSessionResult(result).get_session_id()
pub_id = newSessionResult(result).get_publisher_id()
self._mapclient.set_session_id(sess_id)
self._mapclient.set_publisher_id(pub_id)
else: # successful publish
not_published = False
break
# end while not_published
if retry_count:
log_str = 'Success publishing to ifmap after %d tries' \
%(retry_count)
self.config_log(log_str, level=SandeshLevel.SYS_ERR)
return True, resp_xml
except Exception as e:
if (isinstance(e, socket.error) and
self._conn_state != ConnectionStatus.DOWN):
self._conn_state = ConnectionStatus.DOWN
log_str = 'Connection to IFMAP down. Failed to publish %s' %(
oper_body)
self.config_log(log_str, level=SandeshLevel.SYS_ERR)
ConnectionState.update(
conn_type=ConnType.IFMAP,
name='IfMap', status=ConnectionStatus.DOWN, message='',
server_addrs=["%s:%s" % (self._ifmap_srv_ip,
self._ifmap_srv_port)])
self.reset()
self._get_api_server().un_publish_ifmap_to_discovery()
# this will block till connection is re-established
self._init_conn()
self._publish_config_root()
self._db_client_mgr.db_resync()
return False, log_str
else:
log_str = 'Failed to publish %s to ifmap: %s' %(oper_body,
str(e))
self.config_log(log_str, level=SandeshLevel.SYS_ERR)
return False, log_str
# end _publish_to_ifmap
def _build_request(self, id1_name, id2_name, meta_list, delete=False):
request = ''
id1 = unicode(Identity(name=id1_name, type="other",
other_type="extended"))
if id2_name != 'self':
id2 = unicode(Identity(name=id2_name, type="other",
other_type="extended"))
else:
id2 = None
for m in meta_list:
if delete:
filter = unicode(m) if m else None
op = PublishDeleteOperation(id1=id1, id2=id2,
filter=filter)
else:
op = PublishUpdateOperation(id1=id1, id2=id2,
metadata=unicode(m),
lifetime='forever')
request += unicode(op)
return request
def _delete_id_self_meta(self, self_imid, meta_name):
mapclient = self._mapclient
del_str = self._build_request(self_imid, 'self', [meta_name], True)
self._publish_to_ifmap_enqueue('delete', del_str)
# del meta from cache and del id if this was last meta
if meta_name:
prop_name = meta_name.replace('contrail:', '')
del self._id_to_metas[self_imid][prop_name]
if not self._id_to_metas[self_imid]:
del self._id_to_metas[self_imid]
else:
del self._id_to_metas[self_imid]
# end _delete_id_self_meta
def _delete_id_pair_meta_list(self, id1, meta_list):
mapclient = self._mapclient
del_str = ''
for id2, metadata in meta_list:
del_str += self._build_request(id1, id2, [metadata], True)
self._publish_to_ifmap_enqueue('delete', del_str)
# del meta,id2 from cache and del id if this was last meta
def _id_to_metas_delete(id1, id2, meta_name):
if id1 not in self._id_to_metas:
return
if meta_name not in self._id_to_metas[id1]:
return
if not self._id_to_metas[id1][meta_name]:
del self._id_to_metas[id1][meta_name]
if not self._id_to_metas[id1]:
del self._id_to_metas[id1]
return
# if meta is prop, noop
if 'id' not in self._id_to_metas[id1][meta_name][0]:
return
self._id_to_metas[id1][meta_name] = [
m for m in self._id_to_metas[id1][meta_name] if m['id'] != id2]
for id2, metadata in meta_list:
if metadata:
meta_name = metadata.replace('contrail:', '')
# replace with remaining refs
_id_to_metas_delete(id1, id2, meta_name)
_id_to_metas_delete(id2, id1, meta_name)
else: # no meta specified remove all links from id1 to id2
for meta_name in self._id_to_metas.get(id1, {}).keys():
_id_to_metas_delete(id1, id2, meta_name)
for meta_name in self._id_to_metas.get(id2, {}).keys():
_id_to_metas_delete(id2, id1, meta_name)
# end _delete_id_pair_meta_list
def _delete_id_pair_meta(self, id1, id2, metadata):
self._delete_id_pair_meta_list(id1, [(id2, metadata)])
# end _delete_id_pair_meta
def _update_id_self_meta(self, update, meta):
""" update: dictionary of the type
update[<id> | 'self'] = list(metadata)
"""
mlist = update.setdefault('self', [])
mlist.append(meta)
# end _update_id_self_meta
def _update_id_pair_meta(self, update, to_id, meta):
mlist = update.setdefault(to_id, [])
mlist.append(meta)
# end _update_id_pair_meta
def _publish_update(self, self_imid, update):
if self_imid not in self._id_to_metas:
self._id_to_metas[self_imid] = {}
mapclient = self._mapclient
requests = []
for id2 in update:
metalist = update[id2]
requests.append(self._build_request(self_imid, id2, metalist))
# remember what we wrote for diffing during next update
for m in metalist:
meta_name = m._Metadata__name.replace('contrail:', '')
if id2 == 'self':
self._id_to_metas[self_imid][meta_name] = [{'meta':m}]
continue
if meta_name in self._id_to_metas[self_imid]:
for id_meta in self._id_to_metas[self_imid][meta_name]:
if id_meta['id'] == id2:
id_meta['meta'] = m
break
else:
self._id_to_metas[self_imid][meta_name].append({'meta':m,
'id': id2})
else:
self._id_to_metas[self_imid][meta_name] = [{'meta':m,
'id': id2}]
if id2 not in self._id_to_metas:
self._id_to_metas[id2] = {}
if meta_name in self._id_to_metas[id2]:
for id_meta in self._id_to_metas[id2][meta_name]:
if id_meta['id'] == self_imid:
id_meta['meta'] = m
break
else:
self._id_to_metas[id2][meta_name].append({'meta':m,
'id': self_imid})
else:
self._id_to_metas[id2][meta_name] = [{'meta':m,
'id': self_imid}]
upd_str = ''.join(requests)
self._publish_to_ifmap_enqueue('update', upd_str)
# end _publish_update
def _health_checker(self):
while True:
try:
# do the healthcheck only if we are connected
if self._conn_state == ConnectionStatus.DOWN:
continue
meta = Metadata('display-name', '',
{'ifmap-cardinality': 'singleValue'},
ns_prefix='contrail', elements='')
request_str = self._build_request('healthcheck', 'self', [meta])
self._publish_to_ifmap_enqueue('update', request_str, do_trace=False)
except Exception as e:
log_str = 'Healthcheck to IFMAP failed: %s' %(str(e))
self.config_log(log_str, level=SandeshLevel.SYS_ERR)
finally:
gevent.sleep(
self._get_api_server().get_ifmap_health_check_interval())
# end _health_checker
# end class VncIfmapClient
class VncServerCassandraClient(VncCassandraClient):
# Useragent datastore keyspace + tables (used by neutron plugin currently)
_USERAGENT_KEYSPACE_NAME = USERAGENT_KEYSPACE_NAME
_USERAGENT_KV_CF_NAME = 'useragent_keyval_table'
@classmethod
def get_db_info(cls):
db_info = VncCassandraClient.get_db_info() + \
[(cls._USERAGENT_KEYSPACE_NAME, [cls._USERAGENT_KV_CF_NAME])]
return db_info
# end get_db_info
def __init__(self, db_client_mgr, cass_srv_list, reset_config, db_prefix,
cassandra_credential):
self._db_client_mgr = db_client_mgr
keyspaces = self._UUID_KEYSPACE.copy()
keyspaces[self._USERAGENT_KEYSPACE_NAME] = [
(self._USERAGENT_KV_CF_NAME, None)]
super(VncServerCassandraClient, self).__init__(
cass_srv_list, db_prefix, keyspaces, None, self.config_log,
generate_url=db_client_mgr.generate_url,
reset_config=reset_config,credential=cassandra_credential)
self._useragent_kv_cf = self._cf_dict[self._USERAGENT_KV_CF_NAME]
# end __init__
def config_log(self, msg, level):
self._db_client_mgr.config_log(msg, level)
# end config_log
def prop_collection_update(self, obj_type, obj_uuid, updates):
obj_class = self._get_resource_class(obj_type)
bch = self._obj_uuid_cf.batch()
for oper_param in updates:
oper = oper_param['operation']
prop_name = oper_param['field']
if prop_name in obj_class.prop_list_fields:
if oper == 'add':
prop_elem_val = oper_param['value']
prop_elem_pos = oper_param.get('position') or str(uuid.uuid4())
self._add_to_prop_list(bch, obj_uuid,
prop_name, prop_elem_val, prop_elem_pos)
elif oper == 'modify':
prop_elem_val = oper_param['value']
prop_elem_pos = oper_param['position']
# modify is practically an insert so use add
self._add_to_prop_list(bch, obj_uuid,
prop_name, prop_elem_val, prop_elem_pos)
elif oper == 'delete':
prop_elem_pos = oper_param['position']
self._delete_from_prop_list(bch, obj_uuid,
prop_name, prop_elem_pos)
elif prop_name in obj_class.prop_map_fields:
key_name = obj_class.prop_map_field_key_names[prop_name]
if oper == 'set':
prop_elem_val = oper_param['value']
position = prop_elem_val[key_name]
self._set_in_prop_map(bch, obj_uuid,
prop_name, prop_elem_val, position)
elif oper == 'delete':
position = oper_param['position']
self._delete_from_prop_map(bch, obj_uuid,
prop_name, position)
# end for all updates
self.update_last_modified(bch, obj_uuid)
bch.send()
# end prop_collection_update
def ref_update(self, obj_type, obj_uuid, ref_type, ref_uuid, ref_data, operation):
bch = self._obj_uuid_cf.batch()
if operation == 'ADD':
self._create_ref(bch, obj_type, obj_uuid, ref_type, ref_uuid, ref_data)
elif operation == 'DELETE':
self._delete_ref(bch, obj_type, obj_uuid, ref_type, ref_uuid)
else:
pass
self.update_last_modified(bch, obj_uuid)
bch.send()
# end ref_update
def ref_relax_for_delete(self, obj_uuid, ref_uuid):
bch = self._obj_uuid_cf.batch()
self._relax_ref_for_delete(bch, obj_uuid, ref_uuid)
bch.send()
# end ref_relax_for_delete
def _relax_ref_for_delete(self, bch, obj_uuid, ref_uuid):
send = False
if bch is None:
send = True
bch = self._obj_uuid_cf.batch()
bch.insert(ref_uuid, {'relaxbackref:%s' % (obj_uuid):
json.dumps(None)})
if send:
bch.send()
# end _relax_ref_for_delete
def get_relaxed_refs(self, obj_uuid):
try:
relaxed_cols = self._obj_uuid_cf.get(obj_uuid,
column_start='relaxbackref:',
column_finish='relaxbackref;')
except pycassa.NotFoundException:
return []
return [col.split(':')[1] for col in relaxed_cols]
# end get_relaxed_refs
def is_latest(self, id, tstamp):
id_perms_json = self._obj_uuid_cf.get(
id, columns=['prop:id_perms'])['prop:id_perms']
id_perms = json.loads(id_perms_json)
if id_perms['last_modified'] == tstamp:
return True
else:
return False
# end is_latest
# Insert new perms. Called on startup when walking DB
def update_perms2(self, obj_uuid):
bch = self._obj_uuid_cf.batch()
perms2 = copy.deepcopy(Provision.defaults.perms2)
perms2_json = json.dumps(perms2, default=lambda o: dict((k, v)
for k, v in o.__dict__.iteritems()))
perms2 = json.loads(perms2_json)
self._update_prop(bch, obj_uuid, 'perms2', {'perms2': perms2})
bch.send()
def uuid_to_obj_dict(self, id):
try:
obj_cols = self._obj_uuid_cf.get(id)
except pycassa.NotFoundException:
raise NoIdError(id)
return obj_cols
# end uuid_to_obj_dict
def uuid_to_obj_perms(self, id):
try:
id_perms_json = self._obj_uuid_cf.get(
id, columns=['prop:id_perms'])['prop:id_perms']
id_perms = json.loads(id_perms_json)
except pycassa.NotFoundException:
raise NoIdError(id)
return id_perms
# end uuid_to_obj_perms
# fetch perms2 for an object
def uuid_to_obj_perms2(self, id):
try:
perms2_json = self._obj_uuid_cf.get(
id, columns=['prop:perms2'])['prop:perms2']
perms2 = json.loads(perms2_json)
except pycassa.NotFoundException:
raise NoIdError(id)
return perms2
# end uuid_to_obj_perms2
def useragent_kv_store(self, key, value):
columns = {'value': value}
self._useragent_kv_cf.insert(key, columns)
# end useragent_kv_store
def useragent_kv_retrieve(self, key):
if key:
if isinstance(key, list):
rows = self._useragent_kv_cf.multiget(key)
return [rows[row].get('value') for row in rows]
else:
try:
columns = self._useragent_kv_cf.get(key)
except pycassa.NotFoundException:
raise NoUserAgentKey
return columns.get('value')
else: # no key specified, return entire contents
kv_list = []
for ua_key, ua_cols in self._useragent_kv_cf.get_range():
kv_list.append({'key': ua_key, 'value': ua_cols.get('value')})
return kv_list
# end useragent_kv_retrieve
def useragent_kv_delete(self, key):
self._useragent_kv_cf.remove(key)
# end useragent_kv_delete
def walk(self, fn):
walk_results = []
obj_infos = [x for x in self._obj_uuid_cf.get_range(
columns=['type', 'fq_name'],
column_count=self._MAX_COL)]
type_to_object = {}
for obj_uuid, obj_col in obj_infos:
try:
obj_type = json.loads(obj_col['type'])
obj_fq_name = json.loads(obj_col['fq_name'])
# prep cache to avoid n/w round-trip in db.read for ref
self.cache_uuid_to_fq_name_add(obj_uuid, obj_fq_name, obj_type)
try:
type_to_object[obj_type].append(obj_uuid)
except KeyError:
type_to_object[obj_type] = [obj_uuid]
except Exception as e:
self.config_log('Error in db walk read %s' %(str(e)),
level=SandeshLevel.SYS_ERR)
continue
for obj_type, uuid_list in type_to_object.items():
try:
self.config_log('Resync: obj_type %s len %s'
%(obj_type, len(uuid_list)),
level=SandeshLevel.SYS_INFO)
result = fn(obj_type, uuid_list)
if result:
walk_results.append(result)
except Exception as e:
self.config_log('Error in db walk invoke %s' %(str(e)),
level=SandeshLevel.SYS_ERR)
continue
return walk_results
# end walk
# end class VncCassandraClient
class VncServerKombuClient(VncKombuClient):
def __init__(self, db_client_mgr, rabbit_ip, rabbit_port, ifmap_db,
rabbit_user, rabbit_password, rabbit_vhost, rabbit_ha_mode):
self._db_client_mgr = db_client_mgr
self._sandesh = db_client_mgr._sandesh
self._ifmap_db = ifmap_db
listen_port = db_client_mgr.get_server_port()
q_name = 'vnc_config.%s-%s' %(socket.gethostname(), listen_port)
super(VncServerKombuClient, self).__init__(
rabbit_ip, rabbit_port, rabbit_user, rabbit_password, rabbit_vhost,
rabbit_ha_mode, q_name, self._dbe_subscribe_callback, self.config_log)
# end __init__
def prepare_to_consume(self):
self._db_client_mgr.wait_for_resync_done()
# prepare_to_consume
def config_log(self, msg, level):
self._db_client_mgr.config_log(msg, level)
# end config_log
def uuid_to_fq_name(self, uuid):
self._db_client_mgr.uuid_to_fq_name(uuid)
# end uuid_to_fq_name
def dbe_uve_trace(self, oper, typ, uuid, body):
self._db_client_mgr.dbe_uve_trace(oper, typ, uuid, body)
# end uuid_to_fq_name
def dbe_oper_publish_pending(self):
return self.num_pending_messages()
# end dbe_oper_publish_pending
@ignore_exceptions
def _generate_msgbus_notify_trace(self, oper_info):
req_id = oper_info.get('request-id',
'req-%s' %(str(uuid.uuid4())))
gevent.getcurrent().trace_request_id = req_id
notify_trace = MessageBusNotifyTrace(request_id=req_id)
notify_trace.operation = oper_info.get('oper', '')
notify_trace.body = json.dumps(oper_info)
return notify_trace
# end _generate_msgbus_notify_trace
def _dbe_subscribe_callback(self, oper_info):
self._db_client_mgr.wait_for_resync_done()
try:
msg = "Notification Message: %s" %(pformat(oper_info))
self.config_log(msg, level=SandeshLevel.SYS_DEBUG)
trace = self._generate_msgbus_notify_trace(oper_info)
if oper_info['oper'] == 'CREATE':
self._dbe_create_notification(oper_info)
if oper_info['oper'] == 'UPDATE':
self._dbe_update_notification(oper_info)
elif oper_info['oper'] == 'DELETE':
self._dbe_delete_notification(oper_info)
trace_msg(trace, 'MessageBusNotifyTraceBuf', self._sandesh)
except Exception as e:
string_buf = cStringIO.StringIO()