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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
import sys
import time
from pprint import pformat
from lxml import etree, objectify
import cgitb
import StringIO
import re
import socket
import errno
import subprocess
import netaddr
from netaddr import IPNetwork
from bitarray import bitarray
from cfgm_common import ignore_exceptions
from cfgm_common.ifmap.client import client, namespaces
from cfgm_common.ifmap.request import NewSessionRequest, RenewSessionRequest,\
EndSessionRequest, PublishRequest, SearchRequest, SubscribeRequest,\
PurgeRequest, PollRequest
from cfgm_common.ifmap.id import IPAddress, MACAddress, Device,\
AccessRequest, Identity, CustomIdentity
from cfgm_common.ifmap.operations import PublishUpdateOperation,\
PublishNotifyOperation, PublishDeleteOperation, SubscribeUpdateOperation,\
SubscribeDeleteOperation
from cfgm_common.ifmap.util import attr, link_ids
from cfgm_common.ifmap.response import Response, newSessionResult
from cfgm_common.ifmap.metadata import Metadata
from cfgm_common import obj_to_json
from cfgm_common.exceptions import ResourceExhaustionError, ResourceExistsError
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 amqp.exceptions
import kombu
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 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(str(self._id_to_metas))
file.close()
def __init__(self, db_client_mgr, ifmap_srv_ip, ifmap_srv_port,
uname, passwd, ssl_options, ifmap_srv_loc=None):
super(VncIfmapClient, self).__init__()
# TODO username/passwd from right place
self._CONTRAIL_XSD = "http://www.contrailsystems.com/vnc_cfg.xsd"
self._IPERMS_NAME = "id-perms"
self._IPERMS_FQ_NAME = "contrail:" + self._IPERMS_NAME
self._SUBNETS_NAME = "contrail:subnets"
self._IPAMS_NAME = "contrail:ipams"
self._SG_RULE_NAME = "contrail:sg_rules"
self._POLICY_ENTRY_NAME = "contrail:policy_entry"
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)])
# launch mapserver
if ifmap_srv_loc:
self._launch_mapserver(ifmap_srv_ip, ifmap_srv_port, ifmap_srv_loc)
# Cache of metas populated in ifmap server. Useful in update to find
# what things to remove in ifmap server
self._id_to_metas = {}
self.accumulator = None
self.accumulated_request_len = 0
# Set the signal handler
signal.signal(signal.SIGUSR2, self.handler)
mapclient = client(("%s" % (ifmap_srv_ip), "%s" % (ifmap_srv_port)),
uname, passwd, self._NAMESPACES, 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" % (ifmap_srv_ip, ifmap_srv_port)])
mapclient.set_session_id(newSessionResult(result).get_session_id())
mapclient.set_publisher_id(newSessionResult(result).get_publisher_id())
# Initialize ifmap-id handler (alloc|convert|parse etc.)
self._imid_handler = Imid()
imid = self._imid_handler
# Publish init config (TODO this should come from api-server init)
# 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 __init__
def get_imid_handler(self):
return self._imid_handler
# end get_imid_handler
# Parse ifmap-server returned search results and create list of tuples
# of (ident-1, ident-2, link-attribs)
def parse_result_items(self, srch_result, my_imid):
xpath_expr = \
'/env:Envelope/env:Body/ifmap:response/searchResult/resultItem'
result_items = self._parse(srch_result, xpath_expr)
return cfgm_common.imid.parse_result_items(result_items, my_imid)
# end parse_result_items
# In list of (ident-1, ident-2, link-attribs) tuples, return list of
# ifmap-ids of other idents
def get_others_in_result_list(self, result_list, my_imid):
other_imid_list = []
for result_elem in result_list:
ident_1, ident_2, meta = result_elem
if (ident_1 is None) or (ident_2 is None):
continue
other_imid = None
if ident_1.attrib['name'] == my_imid:
other_imid = ident_2.attrib['name']
elif ident_2.attrib['name'] == my_imid:
other_imid = ident_1.attrib['name']
other_imid_list.append(other_imid)
return other_imid_list
# end get_others_in_result_list
def _ensure_port_not_listened(self, server_ip, server_port):
try:
s = socket.create_connection((server_ip, server_port))
s.close()
print "IP %s port %s already listened on"\
% (server_ip, server_port)
except Exception as err:
if err.errno == errno.ECONNREFUSED:
return # all is well
# end _ensure_port_not_listened
def _block_till_port_listened(self, server_name, server_ip, server_port):
svr_running = False
while not svr_running:
try:
s = socket.create_connection((server_ip, server_port))
s.close()
svr_running = True
except Exception as err:
if err.errno == errno.ECONNREFUSED:
print "%s not up, retrying in 2 secs" % (server_name)
time.sleep(2)
else:
raise err
# end _block_till_port_listened
# launch ifmap server
def _launch_mapserver(self, ifmap_srv_ip, ifmap_srv_port, ifmap_srv_loc):
print 'Starting IFMAP server ...'
self._ensure_port_not_listened(ifmap_srv_ip, ifmap_srv_port)
logf_out = open('ifmap-server.out', 'w')
logf_err = open('ifmap-server.err', 'w')
self._mapserver = subprocess.Popen(['java', '-jar', 'build/irond.jar'],
cwd=ifmap_srv_loc, stdout=logf_out,
stderr=logf_err)
self._block_till_port_listened(
'ifmap-server', ifmap_srv_ip, ifmap_srv_port)
# end _launch_mapserver
@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_with_trace(self, oper, oper_body, async):
trace = self._generate_ifmap_trace(oper, oper_body)
if async:
method = getattr(self._mapclient, 'call_async_result')
else:
method = getattr(self._mapclient, 'call')
try:
sess_id = self._mapclient.get_session_id()
method('publish', PublishRequest(sess_id, oper_body))
trace_msg(trace, 'IfmapTraceBuf', self._sandesh)
except Exception as e:
trace_msg(trace, 'IfmapTraceBuf', self._sandesh, error_msg=str(e))
log_str = 'Failed to publish %s body %s to ifmap: %s' %(oper,
oper_body, str(e))
logger.error(log_str)
self._db_client_mgr.config_log_error(log_str)
raise
# end _publish_with_trace
def _delete_id_self_meta(self, self_imid, meta_name):
mapclient = self._mapclient
del_str = str(PublishDeleteOperation(
id1=str(Identity(
name=self_imid,
type="other",
other_type="extended")),
filter=meta_name))
self._publish_with_trace('delete', del_str, async=False)
# 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(self, id1, id2, metadata):
mapclient = self._mapclient
del_str = str(PublishDeleteOperation(
id1=str(Identity(
name=id1,
type="other",
other_type="extended")),
id2=str(Identity(
name=id2,
type="other",
other_type="extended")),
filter=metadata))
self._publish_with_trace('delete', del_str, async=False)
# del meta,id2 from cache and del id if this was last meta
def _id_to_metas_delete(id1, id2, meta_name):
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] = \
[{'id':m['id'], 'meta':m['meta']} \
for m in self._id_to_metas[id1][meta_name] if m['id'] != id2]
if metadata:
meta_name = metadata.replace('contrail:', '')
# replace with remaining refs
for (id_x, id_y) in [(id1, id2), (id2, id1)]:
_id_to_metas_delete(id_x, id_y, meta_name)
else: # no meta specified remove all links from id1 to id2
for (id_x, id_y) in [(id1, id2), (id2, id1)]:
meta_names = self._id_to_metas.get(id_x, {}).keys()
for meta_name in meta_names:
_id_to_metas_delete(id_x, id_y, meta_name)
# end _delete_id_pair_meta
def _update_id_self_meta(self, update, meta):
""" update: dictionary of the type
update[<id> | 'self'] = list(metadata)
"""
if 'self' in update:
mlist = update['self']
else:
mlist = []
update['self'] = mlist
mlist.append(meta)
# end _update_id_self_meta
def _update_id_pair_meta(self, update, to_id, meta):
if to_id in update:
mlist = update[to_id]
else:
mlist = []
update[to_id] = mlist
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] = {}
def _build_request_id_self(imid, metalist):
request = ''
for m in metalist:
request += str(PublishUpdateOperation(
id1=str(Identity(name=self_imid, type="other",
other_type="extended")),
metadata=str(m),
lifetime='forever'))
return request
def _build_request_id_pair(id1, id2, metalist):
request = ''
for m in metalist:
request += str(PublishUpdateOperation(
id1=str(Identity(name=id1, type="other",
other_type="extended")),
id2=str(Identity(name=id2, type="other",
other_type="extended")),
metadata=str(m),
lifetime='forever'))
return request
mapclient = self._mapclient
requests = []
if 'self' in update:
metalist = update['self']
requests.append(
_build_request_id_self(self_imid, metalist))
# remember what we wrote for diffing during next update
for m in metalist:
meta_name = m._Metadata__name.replace('contrail:', '')
self._id_to_metas[self_imid][meta_name] = [{'meta':m}]
for id2 in update:
if id2 == 'self':
continue
metalist = update[id2]
requests.append(
_build_request_id_pair(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 meta_name in self._id_to_metas[self_imid]:
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]:
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}]
if self.accumulator is not None:
self.accumulator.append(requests)
self.accumulated_request_len += len(requests)
if self.accumulated_request_len >= 1024*1024:
upd_str = \
''.join(''.join(request) for request in \
self._ifmap_db.accumulator)
self._publish_with_trace('update', upd_str, async=True)
self.accumulator = []
self.accumulated_request_len = 0
else:
upd_str = ''.join(requests)
self._publish_with_trace('update', upd_str, async=True)
# end _publish_update
def _search(self, start_id, match_meta=None, result_meta=None,
max_depth=1):
# set ifmap search parmeters
srch_params = {}
srch_params['max-depth'] = str(max_depth)
if match_meta is not None:
srch_params['match-links'] = match_meta
if result_meta is not None:
# all => don't set result-filter, so server returns all id + meta
if result_meta == "all":
pass
else:
srch_params['result-filter'] = result_meta
else:
# default to return match_meta metadata types only
srch_params['result-filter'] = match_meta
mapclient = self._mapclient
srch_req = SearchRequest(mapclient.get_session_id(), start_id,
search_parameters=srch_params
)
result = mapclient.call('search', srch_req)
return result
# end _search
def _parse(self, srch_result, xpath_expr):
soap_doc = etree.parse(StringIO.StringIO(srch_result))
result_items = soap_doc.xpath(xpath_expr,
namespaces=self._NAMESPACES)
return result_items
# end _parse
def _search_and_parse(self, start_id, xpath_expr,
match_meta=None, result_meta=None, max_depth=0):
result = self._search(start_id, match_meta, result_meta, max_depth)
result_items = self._parse(result, xpath_expr)
return result_items
# end _search_and_parse
def _get_id_meta_refs(self, result_items, self_type, parent_type):
# Given parsed result items from search, returns # of idents + metadata
# referring to this ident (incl self + parent). In addition, parent's
# name and names of non-parent, non-self idents referring to this ident
# are returned. TODO should this be moved to cfgm/common
ref_cnt = 0
ref_set = set()
ref_names = ""
parent_imid = ""
imid = self._imid_handler
for r_item in result_items:
if r_item.tag == 'identity':
ident_name = r_item.attrib['name']
ident_type = cfgm_common.imid.ifmap_id_to_type(ident_name)
# No action if already encountered
if ident_name in ref_set:
continue
ref_cnt = ref_cnt + 1
ref_set.add(ident_name)
if (ident_type == self_type):
continue
if (ident_type == parent_type):
parent_imid = r_item.attrib['name']
continue
# non-parent, non-self refs
ref_names = "%s %s" % (ref_names, ident_name)
elif r_item.tag == 'metadata':
# TBI figure out meta only belonging to self
ref_cnt = ref_cnt + 1
meta_elem = r_item.getchildren()[0]
meta_name = re.sub("{.*}", "", meta_elem.tag)
ref_names = "%s %s" % (ref_names, meta_name)
return ref_cnt, parent_imid, ref_names
# end _get_id_meta_refs
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 Imid(ImidGen):
pass
# end class Imid
class VncCassandraClient(VncCassandraClientGen):
# Name to ID mapping keyspace + tables
_UUID_KEYSPACE_NAME = 'config_db_uuid'
# TODO describe layout
_OBJ_UUID_CF_NAME = 'obj_uuid_table'
# TODO describe layout
_OBJ_FQ_NAME_CF_NAME = 'obj_fq_name_table'
# has obj uuid as rowkey; ascii as column type; <fq_name>, <ifmap_id>
# <obj_json> <child_cf_col_name> as column values
_UUID_CF_NAME = 'uuid_table'
# has type:fq_name as rowkey; ascii as column type; <obj uuid> <ifmap_id>
# as column values
_FQ_NAME_CF_NAME = 'fq_name_table'
# has ifmap_id as rowkey; ascii as column type
# <obj uuid>, <fq_name> as column values
# ifmap_id itself is contrail:<type>:<fq-name delimited by ':'>
_IFMAP_ID_CF_NAME = 'ifmap_id_table'
# has obj uuid:<child-type> as rowkey; timeuuid column type; <child obj
# uuid> as column values
_CHILDREN_CF_NAME = 'children_table'
_SUBNET_CF_NAME = 'subnet_bitmask_table'
# Useragent datastore keyspace + tables (used by quantum plugin currently)
_USERAGENT_KEYSPACE_NAME = 'useragent'
_USERAGENT_KV_CF_NAME = 'useragent_keyval_table'
def __init__(self, db_client_mgr, cass_srv_list, reset_config, db_prefix):
super(VncCassandraClient, self).__init__()
self._db_client_mgr = db_client_mgr
self._reset_config = reset_config
self._cache_uuid_to_fq_name = {}
if db_prefix:
self._db_prefix = '%s_' %(db_prefix)
else:
self._db_prefix = ''
self._cassandra_init(cass_srv_list)
# end __init__
# Helper routines for cassandra
def _cassandra_init(self, server_list):
# 1. Ensure keyspace and schema/CFs exist
# 2. Read in persisted data and publish to ifmap server
ConnectionState.update(conn_type = ConnectionType.DATABASE,
name = 'Cassandra', status = ConnectionStatus.INIT, message = '',
server_addrs = server_list)
uuid_ks_name = '%s%s' %(self._db_prefix, VncCassandraClient._UUID_KEYSPACE_NAME)
obj_uuid_cf_info = (VncCassandraClient._OBJ_UUID_CF_NAME, None)
obj_fq_name_cf_info = (VncCassandraClient._OBJ_FQ_NAME_CF_NAME, None)
uuid_cf_info = (VncCassandraClient._UUID_CF_NAME, None)
fq_name_cf_info = (VncCassandraClient._FQ_NAME_CF_NAME, None)
ifmap_id_cf_info = (VncCassandraClient._IFMAP_ID_CF_NAME, None)
subnet_cf_info = (VncCassandraClient._SUBNET_CF_NAME, None)
children_cf_info = (
VncCassandraClient._CHILDREN_CF_NAME, TIME_UUID_TYPE)
self._cassandra_ensure_keyspace(
server_list, uuid_ks_name,
[obj_uuid_cf_info, obj_fq_name_cf_info,
uuid_cf_info, fq_name_cf_info, ifmap_id_cf_info,
subnet_cf_info, children_cf_info])
useragent_ks_name = '%s%s' %(self._db_prefix, VncCassandraClient._USERAGENT_KEYSPACE_NAME)
useragent_kv_cf_info = (VncCassandraClient._USERAGENT_KV_CF_NAME, None)
self._cassandra_ensure_keyspace(server_list, useragent_ks_name,
[useragent_kv_cf_info])
uuid_pool = pycassa.ConnectionPool(
uuid_ks_name, server_list, max_overflow=-1,
use_threadlocal=True, prefill=True, pool_size=20, pool_timeout=30,
max_retries=-1, timeout=0.5)
useragent_pool = pycassa.ConnectionPool(
useragent_ks_name, server_list, max_overflow=-1,
use_threadlocal=True, prefill=True, pool_size=20, pool_timeout=30,
max_retries=-1, timeout=0.5)
rd_consistency = pycassa.cassandra.ttypes.ConsistencyLevel.QUORUM
wr_consistency = pycassa.cassandra.ttypes.ConsistencyLevel.QUORUM
self._obj_uuid_cf = pycassa.ColumnFamily(
uuid_pool, VncCassandraClient._OBJ_UUID_CF_NAME,
read_consistency_level = rd_consistency,
write_consistency_level = wr_consistency)
self._obj_fq_name_cf = pycassa.ColumnFamily(
uuid_pool, VncCassandraClient._OBJ_FQ_NAME_CF_NAME,
read_consistency_level = rd_consistency,
write_consistency_level = wr_consistency)
self._useragent_kv_cf = pycassa.ColumnFamily(
useragent_pool, VncCassandraClient._USERAGENT_KV_CF_NAME,
read_consistency_level = rd_consistency,
write_consistency_level = wr_consistency)
self._subnet_cf = pycassa.ColumnFamily(
uuid_pool, VncCassandraClient._SUBNET_CF_NAME,
read_consistency_level = rd_consistency,
write_consistency_level = wr_consistency)
ConnectionState.update(conn_type = ConnectionType.DATABASE,
name = 'Cassandra', status = ConnectionStatus.UP, message = '',
server_addrs = server_list)
# end _cassandra_init
def _cassandra_ensure_keyspace(self, server_list,
keyspace_name, cf_info_list):
# Retry till cassandra is up
server_idx = 0
num_dbnodes = len(server_list)
connected = False
while not connected:
try:
cass_server = server_list[server_idx]
sys_mgr = SystemManager(cass_server)
connected = True
except Exception as e:
# TODO do only for
# thrift.transport.TTransport.TTransportException
server_idx = (server_idx + 1) % num_dbnodes
time.sleep(3)
if self._reset_config:
try:
sys_mgr.drop_keyspace(keyspace_name)
except pycassa.cassandra.ttypes.InvalidRequestException as e:
# TODO verify only EEXISTS
print "Warning! " + str(e)
try:
sys_mgr.create_keyspace(keyspace_name, SIMPLE_STRATEGY,
{'replication_factor': str(num_dbnodes)})
except pycassa.cassandra.ttypes.InvalidRequestException as e:
# TODO verify only EEXISTS
print "Warning! " + str(e)
for cf_info in cf_info_list:
try:
(cf_name, comparator_type) = cf_info
if comparator_type:
sys_mgr.create_column_family(
keyspace_name, cf_name,
comparator_type=comparator_type)
else:
sys_mgr.create_column_family(keyspace_name, cf_name)
except pycassa.cassandra.ttypes.InvalidRequestException as e:
# TODO verify only EEXISTS
print "Warning! " + str(e)
# end _cassandra_ensure_keyspace
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 _read_child(self, result, obj_uuid, child_type,
child_uuid, child_tstamp):
if '%ss' % (child_type) not in result:
result['%ss' % (child_type)] = []
child_info = {}
child_info['to'] = self.uuid_to_fq_name(child_uuid)
child_info['href'] = self._db_client_mgr.generate_url(
child_type, child_uuid)
child_info['uuid'] = child_uuid
child_info['tstamp'] = child_tstamp
result['%ss' % (child_type)].append(child_info)
# end _read_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 _read_ref(self, result, obj_uuid, ref_type, ref_uuid, ref_data_json):
if '%s_refs' % (ref_type) not in result:
result['%s_refs' % (ref_type)] = []
ref_data = json.loads(ref_data_json)
ref_info = {}
try:
ref_info['to'] = self.uuid_to_fq_name(ref_uuid)
except NoIdError as e:
ref_info['to'] = ['ERROR']
if ref_data:
try:
ref_info['attr'] = ref_data['attr']
except KeyError:
# TODO remove backward compat old format had attr directly
ref_info['attr'] = ref_data
ref_info['href'] = self._db_client_mgr.generate_url(
ref_type, ref_uuid)
ref_info['uuid'] = ref_uuid
result['%s_refs' % (ref_type)].append(ref_info)
# end _read_ref
def _read_back_ref(self, result, obj_uuid, back_ref_type,
back_ref_uuid, back_ref_data_json):
if '%s_back_refs' % (back_ref_type) not in result:
result['%s_back_refs' % (back_ref_type)] = []
back_ref_info = {}
back_ref_info['to'] = self.uuid_to_fq_name(back_ref_uuid)
back_ref_data = json.loads(back_ref_data_json)
if back_ref_data:
try:
back_ref_info['attr'] = back_ref_data['attr']
except KeyError:
# TODO remove backward compat old format had attr directly
back_ref_info['attr'] = back_ref_data
back_ref_info['href'] = self._db_client_mgr.generate_url(
back_ref_type, back_ref_uuid)
back_ref_info['uuid'] = back_ref_uuid
result['%s_back_refs' % (back_ref_type)].append(back_ref_info)
# end _read_back_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 cache_uuid_to_fq_name_add(self, id, fq_name):
self._cache_uuid_to_fq_name[id] = fq_name
# end cache_uuid_to_fq_name_add
def cache_uuid_to_fq_name_del(self, id):
try:
del self._cache_uuid_to_fq_name[id]
except KeyError:
pass
# end cache_uuid_to_fq_name_del
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_fq_name(self, id):
try:
#TODO remove from cache on delete_notify
return self._cache_uuid_to_fq_name[id]
except KeyError:
try:
fq_name_json = self._obj_uuid_cf.get(
id, columns=['fq_name'])['fq_name']
except pycassa.NotFoundException:
raise NoIdError(id)
fq_name = json.loads(fq_name_json)
self.cache_uuid_to_fq_name_add(id, fq_name)
return fq_name
# end uuid_to_fq_name
def uuid_to_obj_type(self, id):
try:
type_json = self._obj_uuid_cf.get(id, columns=['type'])['type']
except pycassa.NotFoundException:
raise NoIdError(id)
return json.loads(type_json)
# end uuid_to_fq_name
def fq_name_to_uuid(self, obj_type, fq_name):
method_name = obj_type.replace('-', '_')
fq_name_str = ':'.join(fq_name)
col_start = '%s:' % (fq_name_str)
col_fin = '%s;' % (fq_name_str)
try:
col_info_iter = self._obj_fq_name_cf.xget(
method_name, column_start=col_start, column_finish=col_fin)
except pycassa.NotFoundException:
raise NoIdError('%s %s' % (obj_type, fq_name))
col_infos = list(col_info_iter)
if len(col_infos) == 0:
raise NoIdError('%s %s' % (obj_type, fq_name))
for (col_name, col_val) in col_infos:
obj_uuid = col_name.split(':')[-1]
return obj_uuid
# end fq_name_to_uuid
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:
try:
columns = self._useragent_kv_cf.get(key)
except pycassa.NotFoundException:
raise NoUserAgentKey
return columns['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['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 subnet_add_cols(self, subnet_fq_name, col_dict):
self._subnet_cf.insert(subnet_fq_name, col_dict)
# end subnet_add_cols
def subnet_delete_cols(self, subnet_fq_name, col_names):
self._subnet_cf.remove(subnet_fq_name, col_names)
# end subnet_delete_cols
def subnet_retrieve(self, subnet_fq_name):
try:
cols_iter = self._subnet_cf.xget(subnet_fq_name)
except pycassa.NotFoundException:
# ok to fail as not all subnets will have in-use addresses
return None