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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 sys
import time
from pprint import pformat
from lxml import etree, objectify
import cgitb
import StringIO
import re
import socket
from netaddr import IPNetwork
from cfgm_common.uve.vnc_api.ttypes import *
from cfgm_common import ignore_exceptions, utils
from cfgm_common.ifmap.client import client, namespaces
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 Response, newSessionResult
from cfgm_common.ifmap.metadata import Metadata
from cfgm_common.exceptions import ResourceExhaustionError, ResourceExistsError
from cfgm_common.vnc_cassandra import VncCassandraClient
from cfgm_common.vnc_kombu import VncKombuClient
import copy
import json
import uuid
import datetime
import pycassa
import pycassa.util
import pycassa.cassandra.ttypes
from pycassa.system_manager import *
from datetime import datetime
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 gen.vnc_ifmap_client_gen import *
from gen.vnc_cassandra_client_gen import *
from pysandesh.connection_info import ConnectionState
from pysandesh.gen_py.process_info.ttypes import ConnectionStatus, \
ConnectionType
from pysandesh.gen_py.sandesh.ttypes import SandeshLevel
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(VncIfmapClientGen):
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):
super(VncIfmapClient, self).__init__()
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 = ConnectionType.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)
# Initialize ifmap-id handler (alloc|convert|parse etc.)
self._imid_handler = ImidGen()
self._init_conn()
self._publish_config_root()
# end __init__
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 = ConnectionType.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):
# Cache of metas populated in ifmap server. Useful in update to find
# what things to remove in ifmap server
self._id_to_metas = {}
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['config-root']
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 = utils.detailed_traceback()
self.config_log(tb, level=SandeshLevel.SYS_ERROR)
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):
log_str = 'Connection to IFMAP down. Failed to publish %s' %(
oper_body)
self.config_log(log_str, level=SandeshLevel.SYS_ERR)
self._conn_state = ConnectionStatus.DOWN
ConnectionState.update(
conn_type=ConnectionType.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 fq_name_to_ifmap_id(self, obj_type, fq_name):
return cfgm_common.imid.get_ifmap_id_from_fq_name(obj_type, fq_name)
# end fq_name_to_ifmap_id
def ifmap_id_to_fq_name(self, ifmap_id):
return cfgm_common.imid.get_fq_name_from_ifmap_id(ifmap_id)
# end ifmap_id_to_fq_name
# end class VncIfmapClient
class VncServerCassandraClient(VncCassandraClient):
# Useragent datastore keyspace + tables (used by neutron plugin currently)
_USERAGENT_KEYSPACE_NAME = 'useragent'
_USERAGENT_KV_CF_NAME = 'useragent_keyval_table'
_MAX_COL = 10000000
@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):
self._db_client_mgr = db_client_mgr
keyspaces = {
self._USERAGENT_KEYSPACE_NAME: [(self._USERAGENT_KV_CF_NAME, None)]
}
super(VncServerCassandraClient, self).__init__(
cass_srv_list, reset_config, db_prefix,keyspaces, self.config_log,
db_client_mgr.generate_url)
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 create(self, method_name, *args, **kwargs):
method = getattr(self, '_cassandra_%s_create' % (method_name))
return method(*args, **kwargs)
# end create
def read(self, method_name, *args, **kwargs):
method = getattr(self, '_cassandra_%s_read' % (method_name))
return method(*args, **kwargs)
# end read
def count_children(self, method_name, *args, **kwargs):
method = getattr(self, '_cassandra_%s_count_children' % (method_name))
return method(*args, **kwargs)
# end read
def update(self, method_name, *args, **kwargs):
method = getattr(self, '_cassandra_%s_update' % (method_name))
return method(*args, **kwargs)
# end update
def delete(self, method_name, *args, **kwargs):
method = getattr(self, '_cassandra_%s_delete' % (method_name))
return method(*args, **kwargs)
# end delete
def list(self, method_name, *args, **kwargs):
method = getattr(self, '_cassandra_%s_list' % (method_name))
return method(*args, **kwargs)
# end list
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 _create_prop(self, bch, obj_uuid, prop_name, prop_val):
bch.insert(obj_uuid, {'prop:%s' % (prop_name): json.dumps(prop_val)})
# end _create_prop
def _update_prop(self, bch, obj_uuid, prop_name, new_props):
if new_props[prop_name] is None:
bch.remove(obj_uuid, columns=['prop:' + prop_name])
else:
bch.insert(
obj_uuid,
{'prop:' + prop_name: json.dumps(new_props[prop_name])})
# prop has been accounted for, remove so only new ones remain
del new_props[prop_name]
# end _update_prop
def _create_child(self, bch, parent_type, parent_uuid,
child_type, child_uuid):
child_col = {'children:%s:%s' %
(child_type, child_uuid): json.dumps(None)}
bch.insert(parent_uuid, child_col)
parent_col = {'parent:%s:%s' %
(parent_type, parent_uuid): json.dumps(None)}
bch.insert(child_uuid, parent_col)
# end _create_child
def _delete_child(self, bch, parent_type, parent_uuid,
child_type, child_uuid):
child_col = {'children:%s:%s' %
(child_type, child_uuid): json.dumps(None)}
bch.remove(parent_uuid, columns=[
'children:%s:%s' % (child_type, child_uuid)])
# end _delete_child
def _create_ref(self, bch, obj_type, obj_uuid, ref_type,
ref_uuid, ref_data):
bch.insert(
obj_uuid, {'ref:%s:%s' %
(ref_type, ref_uuid): json.dumps(ref_data)})
if obj_type == ref_type:
bch.insert(
ref_uuid, {'ref:%s:%s' %
(obj_type, obj_uuid): json.dumps(ref_data)})
else:
bch.insert(
ref_uuid, {'backref:%s:%s' %
(obj_type, obj_uuid): json.dumps(ref_data)})
# end _create_ref
def _update_ref(self, bch, obj_type, obj_uuid, ref_type,
old_ref_uuid, new_ref_infos):
if ref_type not in new_ref_infos:
# update body didn't touch this type, nop
return
if old_ref_uuid not in new_ref_infos[ref_type]:
# remove old ref
bch.remove(obj_uuid, columns=[
'ref:%s:%s' % (ref_type, old_ref_uuid)])
if obj_type == ref_type:
bch.remove(old_ref_uuid, columns=[
'ref:%s:%s' % (obj_type, obj_uuid)])
else:
bch.remove(old_ref_uuid, columns=[
'backref:%s:%s' % (obj_type, obj_uuid)])
self._db_client_mgr.dbe_cache_invalidate({'uuid':
old_ref_uuid})
else:
# retain old ref with new ref attr
new_ref_data = new_ref_infos[ref_type][old_ref_uuid]
bch.insert(
obj_uuid,
{'ref:%s:%s' %
(ref_type, old_ref_uuid): json.dumps(new_ref_data)})
if obj_type == ref_type:
bch.insert(
old_ref_uuid,
{'ref:%s:%s' %
(obj_type, obj_uuid): json.dumps(new_ref_data)})
else:
bch.insert(
old_ref_uuid,
{'backref:%s:%s' %
(obj_type, obj_uuid): json.dumps(new_ref_data)})
self._db_client_mgr.dbe_cache_invalidate({'uuid':
old_ref_uuid})
# uuid has been accounted for, remove so only new ones remain
del new_ref_infos[ref_type][old_ref_uuid]
# end _update_ref
def _delete_ref(self, bch, obj_type, obj_uuid, ref_type, ref_uuid):
send = False
if bch is None:
send = True
bch = self._cassandra_db._obj_uuid_cf.batch()
bch.remove(obj_uuid, columns=['ref:%s:%s' % (ref_type, ref_uuid)])
if obj_type == ref_type:
bch.remove(ref_uuid, columns=[
'ref:%s:%s' % (obj_type, obj_uuid)])
else:
bch.remove(ref_uuid, columns=[
'backref:%s:%s' % (obj_type, obj_uuid)])
if send:
bch.send()
# end _delete_ref
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
def update_last_modified(self, bch, obj_uuid, id_perms=None):
if id_perms is None:
id_perms = json.loads(
self._obj_uuid_cf.get(obj_uuid,
['prop:id_perms'])['prop:id_perms'])
id_perms['last_modified'] = datetime.datetime.utcnow().isoformat()
self._update_prop(bch, obj_uuid, 'id_perms', {'id_perms': id_perms})
# end update_last_modified
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
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()
cgitb.Hook(file=string_buf, format="text").handle(sys.exc_info())
errmsg = string_buf.getvalue()
self.config_log(string_buf.getvalue(),
level=SandeshLevel.SYS_ERR)
trace_msg(trace, name='MessageBusNotifyTraceBuf',
sandesh=self._sandesh, error_msg=errmsg)
#end _dbe_subscribe_callback
def dbe_create_publish(self, obj_type, obj_ids, obj_dict):
req_id = get_trace_id()
oper_info = {'request-id': req_id,
'oper': 'CREATE',
'type': obj_type,
'obj_dict': obj_dict}
oper_info.update(obj_ids)
self.publish(oper_info)
# end dbe_create_publish
def _dbe_create_notification(self, obj_info):
obj_dict = obj_info['obj_dict']
self.dbe_uve_trace("CREATE", obj_info['type'], obj_info['uuid'], obj_dict)
try:
r_class = self._db_client_mgr.get_resource_class(obj_info['type'])
if r_class:
r_class.dbe_create_notification(obj_info, obj_dict)
except Exception as e:
err_msg = ("Failed in type specific dbe_create_notification " +
str(e))
self.config_log(err_msg, level=SandeshLevel.SYS_ERR)
raise
finally:
method_name = obj_info['type'].replace('-', '_')
method = getattr(self._ifmap_db, "_ifmap_%s_create" % (method_name))
(ok, result) = method(obj_info, obj_dict)
if not ok:
self.config_log(result, level=SandeshLevel.SYS_ERR)
raise Exception(result)
#end _dbe_create_notification
def dbe_update_publish(self, obj_type, obj_ids):
oper_info = {'oper': 'UPDATE', 'type': obj_type}
oper_info.update(obj_ids)
self.publish(oper_info)
# end dbe_update_publish
def _dbe_update_notification(self, obj_info):
(ok, result) = self._db_client_mgr.dbe_read(obj_info['type'], obj_info)
if not ok:
raise Exception(result)
new_obj_dict = result
self.dbe_uve_trace("UPDATE", obj_info['type'], obj_info['uuid'], new_obj_dict)
try:
r_class = self._db_client_mgr.get_resource_class(obj_info['type'])
if r_class:
r_class.dbe_update_notification(obj_info)
except:
msg = "Failed to invoke type specific dbe_update_notification"
self.config_log(msg, level=SandeshLevel.SYS_ERR)
raise
finally:
ifmap_id = self._db_client_mgr.uuid_to_ifmap_id(obj_info['type'],
obj_info['uuid'])
method_name = obj_info['type'].replace('-', '_')
method = getattr(self._ifmap_db, "_ifmap_%s_update" % (method_name))
(ok, ifmap_result) = method(ifmap_id, new_obj_dict)
if not ok:
raise Exception(ifmap_result)
#end _dbe_update_notification
def dbe_delete_publish(self, obj_type, obj_ids, obj_dict):
oper_info = {'oper': 'DELETE', 'type': obj_type, 'obj_dict': obj_dict}
oper_info.update(obj_ids)
self.publish(oper_info)
# end dbe_delete_publish
def _dbe_delete_notification(self, obj_info):
obj_dict = obj_info['obj_dict']
self.dbe_uve_trace("DELETE", obj_info['type'], obj_info['uuid'], None)
db_client_mgr = self._db_client_mgr
db_client_mgr._cassandra_db.cache_uuid_to_fq_name_del(obj_dict['uuid'])
try:
r_class = self._db_client_mgr.get_resource_class(obj_info['type'])
if r_class:
r_class.dbe_delete_notification(obj_info, obj_dict)
except:
msg = "Failed to invoke type specific dbe_delete_notification"
self.config_log(msg, level=SandeshLevel.SYS_ERR)
raise
finally:
method_name = obj_info['type'].replace('-', '_')
method = getattr(self._ifmap_db, "_ifmap_%s_delete" % (method_name))
(ok, ifmap_result) = method(obj_info)
if not ok:
self.config_log(ifmap_result, level=SandeshLevel.SYS_ERR)
raise Exception(ifmap_result)
#end _dbe_delete_notification
# end class VncKombuClient
class VncZkClient(object):
_SUBNET_PATH = "/api-server/subnets"
_FQ_NAME_TO_UUID_PATH = "/fq-name-to-uuid"
_MAX_SUBNET_ADDR_ALLOC = 65535
def __init__(self, instance_id, zk_server_ip, reset_config, db_prefix,
sandesh_hdl):
self._db_prefix = db_prefix
if db_prefix:
client_pfx = db_prefix + '-'
zk_path_pfx = db_prefix + '/'
else:
client_pfx = ''
zk_path_pfx = ''
client_name = client_pfx + 'api-' + instance_id
self._subnet_path = zk_path_pfx + self._SUBNET_PATH
self._fq_name_to_uuid_path = zk_path_pfx + self._FQ_NAME_TO_UUID_PATH
self._sandesh = sandesh_hdl
while True:
try:
self._zk_client = ZookeeperClient(client_name, zk_server_ip,
self._sandesh)
# set the lost callback to stub function untill resync is done
self._zk_client.set_lost_cb(lambda x=None:x)
break
except gevent.event.Timeout as e:
pass
if reset_config:
self._zk_client.delete_node(self._subnet_path, True);
self._zk_client.delete_node(self._fq_name_to_uuid_path, True);
self._subnet_allocators = {}
# end __init__
def create_subnet_allocator(self, subnet, subnet_alloc_list,
addr_from_start, should_persist,
start_subnet, size):
# TODO handle subnet resizing change, ignore for now
if subnet not in self._subnet_allocators:
if addr_from_start is None:
addr_from_start = False
self._subnet_allocators[subnet] = IndexAllocator(
self._zk_client, self._subnet_path+'/'+subnet+'/',
size=size, start_idx=start_subnet, reverse=not addr_from_start,
alloc_list=subnet_alloc_list,
max_alloc=self._MAX_SUBNET_ADDR_ALLOC)
# end create_subnet_allocator
def delete_subnet_allocator(self, subnet):
self._subnet_allocators.pop(subnet, None)
IndexAllocator.delete_all(self._zk_client,
self._subnet_path+'/'+subnet+'/')
# end delete_subnet_allocator
def _get_subnet_allocator(self, subnet):
return self._subnet_allocators.get(subnet)
# end _get_subnet_allocator