/
vnc_api.py
1285 lines (1101 loc) · 50.4 KB
/
vnc_api.py
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#
# Copyright (c) 2013 Juniper Networks, Inc. All rights reserved.
#
import logging
import requests
from requests.exceptions import ConnectionError
import ConfigParser
import pprint
from cfgm_common import jsonutils as json
import sys
import time
import platform
import functools
import __main__ as main
import ssl
import re
import os
import gen.resource_common
import gen.vnc_api_client_gen
from gen.vnc_api_client_gen import all_resource_type_tuples
from gen.resource_xsd import *
from gen.resource_client import *
from gen.generatedssuper import GeneratedsSuper
import cfgm_common
from cfgm_common import rest, utils
from cfgm_common.exceptions import *
from cfgm_common import ssl_adapter
from pprint import pformat
def check_homepage(func):
@functools.wraps(func)
def wrapper(self, *args, **kwargs):
if not self._srv_root_url:
homepage = self._request(rest.OP_GET, self._base_url,
retry_on_error=False)
self._parse_homepage(homepage)
return func(self, *args, **kwargs)
return wrapper
def compare_refs(old_refs, new_refs):
# compare refs in an object
old_ref_dict = dict((':'.join(ref['to']), ref['attr']) for ref in old_refs or [])
new_ref_dict = dict((':'.join(ref['to']), ref['attr']) for ref in new_refs or [])
return old_ref_dict == new_ref_dict
# end compare_refs
def get_object_class(res_type):
cls_name = '%s' %(utils.CamelCase(res_type))
return utils.str_to_class(cls_name, __name__)
# end get_object_class
def _read_cfg(cfg_parser, section, option, default):
try:
val = cfg_parser.get(section, option)
except (AttributeError,
ConfigParser.NoOptionError,
ConfigParser.NoSectionError):
val = default
return val
#end _read_cfg
def _cfg_curl_logging(api_curl_log_file=None):
formatter = logging.Formatter('%(asctime)s %(levelname)-8s %(message)s',datefmt='%Y/%m/%d %H:%M:%S')
curl_logger = logging.getLogger('log_curl')
curl_logger.setLevel(logging.DEBUG)
api_curl_log_file="/var/log/contrail/%s" %(api_curl_log_file)
if os.path.exists(api_curl_log_file):
curl_log_handler = logging.FileHandler(api_curl_log_file,mode='a')
else:
curl_log_handler = logging.FileHandler(api_curl_log_file,mode='w')
curl_log_handler.setFormatter(formatter)
curl_logger.addHandler(curl_log_handler)
return curl_logger
# End _cfg_curl_logging
class ActionUriDict(dict):
"""Action uri dictionary with operator([]) overloading to parse home page
and populate the action_uri, if not populated already.
"""
def __init__(self, vnc_api, *args, **kwargs):
dict.__init__(self, args, **kwargs)
self.vnc_api = vnc_api
def __getitem__(self, key):
try:
return dict.__getitem__(self, key)
except KeyError:
homepage = self.vnc_api._request(rest.OP_GET, self.vnc_api._base_url,
retry_on_error=False)
self.vnc_api._parse_homepage(homepage)
return dict.__getitem__(self, key)
class VncApi(object):
_DEFAULT_WEB_SERVER = "127.0.0.1"
hostname = platform.node()
_DEFAULT_HEADERS = {
'Content-type': 'application/json; charset="UTF-8"',
'X-Contrail-Useragent': '%s:%s'
%(hostname, getattr(main, '__file__', '')),
}
_AUTHN_SUPPORTED_TYPES = ["keystone"]
_DEFAULT_AUTHN_TYPE = "keystone"
_DEFAULT_AUTHN_HEADERS = _DEFAULT_HEADERS
_DEFAULT_AUTHN_PROTOCOL = "http"
_DEFAULT_AUTHN_SERVER = _DEFAULT_WEB_SERVER
_DEFAULT_AUTHN_PORT = 35357
_DEFAULT_AUTHN_URL = "/v2.0/tokens"
_DEFAULT_AUTHN_USER = ""
_DEFAULT_AUTHN_PASSWORD = ""
_DEFAULT_AUTHN_TENANT = 'default-tenant'
_DEFAULT_DOMAIN_ID = "default"
# Keystone and and vnc-api SSL support
# contrail-api will remain to be on http
# with LB (haproxy/F5/nginx..etc) configured for
# ssl termination on port 8082(default contrail-api port)
_DEFAULT_API_SERVER_CONNECT="http"
_DEFAULT_API_SERVER_SSL_CONNECT="https"
_DEFAULT_KS_CERT_BUNDLE="/tmp/keystonecertbundle.pem"
_DEFAULT_API_CERT_BUNDLE="/tmp/apiservercertbundle.pem"
# Connection to api-server through Quantum
_DEFAULT_WEB_PORT = 8082
_DEFAULT_BASE_URL = "/"
# The number of items beyond which instead of GET /<collection>
# a POST /list-bulk-collection is issued
POST_FOR_LIST_THRESHOLD = 25
# Number of pools and number of pool per conn to api-server
_DEFAULT_MAX_POOLS = 100
_DEFAULT_MAX_CONNS_PER_POOL = 100
def __init__(self, username=None, password=None, tenant_name=None,
api_server_host=None, api_server_port=None,
api_server_url=None, conf_file=None, user_info=None,
auth_token=None, auth_host=None, auth_port=None,
auth_protocol = None, auth_url=None, auth_type=None,
wait_for_connect=False, api_server_use_ssl=False,
domain_name=None, exclude_hrefs=None,
auth_token_url=None):
# TODO allow for username/password to be present in creds file
self._obj_serializer = self._obj_serializer_diff
for object_type, resource_type in all_resource_type_tuples:
for oper_str in ('_create', '_read', '_update', '_delete',
's_list', '_get_default_id'):
method = getattr(self, '_object%s' %(oper_str))
bound_method = functools.partial(method, resource_type)
functools.update_wrapper(bound_method, method)
if oper_str == '_get_default_id':
setattr(self, 'get_default_%s_id' % (object_type),
bound_method)
else:
setattr(self, '%s%s' %(object_type, oper_str),
bound_method)
cfg_parser = ConfigParser.ConfigParser()
try:
cfg_parser.read(conf_file or
"/etc/contrail/vnc_api_lib.ini")
except Exception as e:
logger = logging.getLogger(__name__)
logger.warn("Exception: %s", str(e))
self._api_connect_protocol = VncApi._DEFAULT_API_SERVER_CONNECT
# API server SSL Support
use_ssl = api_server_use_ssl
if isinstance(api_server_use_ssl, basestring):
use_ssl = (api_server_use_ssl.lower() == 'true')
if use_ssl:
self._api_connect_protocol = VncApi._DEFAULT_API_SERVER_SSL_CONNECT
# keystone
self._authn_type = auth_type or \
_read_cfg(cfg_parser, 'auth', 'AUTHN_TYPE',
self._DEFAULT_AUTHN_TYPE)
if self._authn_type == 'keystone':
self._authn_protocol = auth_protocol or \
_read_cfg(cfg_parser, 'auth', 'AUTHN_PROTOCOL',
self._DEFAULT_AUTHN_PROTOCOL)
self._authn_server = auth_host or \
_read_cfg(cfg_parser, 'auth', 'AUTHN_SERVER',
self._DEFAULT_AUTHN_SERVER)
self._authn_port = auth_port or \
_read_cfg(cfg_parser, 'auth', 'AUTHN_PORT',
self._DEFAULT_AUTHN_PORT)
self._authn_url = auth_url or \
_read_cfg(cfg_parser, 'auth', 'AUTHN_URL',
self._DEFAULT_AUTHN_URL)
self._username = username or \
_read_cfg(cfg_parser, 'auth', 'AUTHN_USER',
self._DEFAULT_AUTHN_USER)
self._password = password or \
_read_cfg(cfg_parser, 'auth', 'AUTHN_PASSWORD',
self._DEFAULT_AUTHN_PASSWORD)
self._tenant_name = tenant_name or \
_read_cfg(cfg_parser, 'auth', 'AUTHN_TENANT',
self._DEFAULT_AUTHN_TENANT)
self._domain_name = domain_name or \
_read_cfg(cfg_parser, 'auth', 'AUTHN_DOMAIN',
self._DEFAULT_DOMAIN_ID)
self._authn_token_url = auth_token_url or \
_read_cfg(cfg_parser, 'auth', 'AUTHN_TOKEN_URL', None)
#contrail-api SSL support
try:
self._apiinsecure = cfg_parser.getboolean('global','insecure')
except (AttributeError,
ConfigParser.NoOptionError,
ConfigParser.NoSectionError):
self._apiinsecure = False
apicertfile=_read_cfg(cfg_parser,'global','certfile','')
apikeyfile=_read_cfg(cfg_parser,'global','keyfile','')
apicafile=_read_cfg(cfg_parser,'global','cafile','')
self._use_api_certs=False
if apicafile and api_server_use_ssl:
certs=[apicafile]
if apikeyfile and apicertfile:
certs=[apicertfile, apikeyfile, apicafile]
self._apicertbundle=utils.getCertKeyCaBundle(VncApi._DEFAULT_API_CERT_BUNDLE,certs)
self._use_api_certs=True
# keystone SSL support
try:
self._ksinsecure = cfg_parser.getboolean('auth', 'insecure')
except (AttributeError,
ConfigParser.NoOptionError,
ConfigParser.NoSectionError):
self._ksinsecure = False
kscertfile=_read_cfg(cfg_parser,'auth','certfile','')
kskeyfile=_read_cfg(cfg_parser,'auth','keyfile','')
kscafile=_read_cfg(cfg_parser,'auth','cafile','')
self._use_ks_certs=False
if kscafile and self._authn_protocol == 'https':
certs=[kscafile]
if kskeyfile and kscertfile:
certs=[kscertfile, kskeyfile, kscafile]
self._kscertbundle=utils.getCertKeyCaBundle(VncApi._DEFAULT_KS_CERT_BUNDLE,certs)
self._use_ks_certs=True
if 'v2' in self._authn_url:
self._authn_body = \
'{"auth":{"passwordCredentials":{' + \
'"username": "%s",' % (self._username) + \
' "password": "%s"},' % (self._password) + \
' "tenantName":"%s"}}' % (self._tenant_name)
else:
self._authn_body = \
'{"auth":{"identity":{' + \
'"methods": ["password"],' + \
' "password":{' + \
' "user":{' + \
' "name": "%s",' % (self._username) + \
' "domain": { "name": "%s" },' % (self._domain_name) + \
' "password": "%s"' % (self._password) + \
'}' + \
'}' + \
'},' + \
' "scope":{' + \
' "project":{' + \
' "domain": { "name": "%s" },' % (self._domain_name) + \
' "name": "%s"' % (self._tenant_name) + \
'}' + \
'}' + \
'}' + \
'}'
self._user_info = user_info
if not api_server_host:
self._web_host = _read_cfg(cfg_parser, 'global', 'WEB_SERVER',
self._DEFAULT_WEB_SERVER)
else:
self._web_host = api_server_host
if not api_server_port:
self._web_port = _read_cfg(cfg_parser, 'global', 'WEB_PORT',
self._DEFAULT_WEB_PORT)
else:
self._web_port = api_server_port
self._max_pools = int(_read_cfg(
cfg_parser, 'global', 'MAX_POOLS',
self._DEFAULT_MAX_POOLS))
self._max_conns_per_pool = int(_read_cfg(
cfg_parser, 'global', 'MAX_CONNS_PER_POOL',
self._DEFAULT_MAX_CONNS_PER_POOL))
self._curl_logging = False
if _read_cfg(cfg_parser, 'global', 'curl_log', False):
self._curl_logging=True
self._curl_logger=_cfg_curl_logging(_read_cfg(cfg_parser,'global','curl_log',False))
# Where client's view of world begins
if not api_server_url:
self._base_url = _read_cfg(cfg_parser, 'global', 'BASE_URL',
self._DEFAULT_BASE_URL)
else:
self._base_url = api_server_url
# Where server says its root is when _base_url is fetched
self._srv_root_url = None
# Type-independent actions offered by server
self._action_uri = ActionUriDict(self)
self._headers = self._DEFAULT_HEADERS.copy()
self._headers[rest.hdr_client_tenant()] = self._tenant_name
self._auth_token_input = False
self._auth_token = None
if auth_token:
self._auth_token = auth_token
self._auth_token_input = True
self._headers['X-AUTH-TOKEN'] = self._auth_token
# user information for quantum
if self._user_info:
if 'user_id' in self._user_info:
self._headers['X-API-USER-ID'] = self._user_info['user_id']
if 'user' in self._user_info:
self._headers['X-API-USER'] = self._user_info['user']
if 'role' in self._user_info:
self.set_user_roles([self._user_info['role']])
self._exclude_hrefs = exclude_hrefs
self._create_api_server_session()
retry_count = 6
while retry_count:
try:
homepage = self._request(rest.OP_GET, self._base_url,
retry_on_error=False)
self._parse_homepage(homepage)
except ServiceUnavailableError as e:
logger = logging.getLogger(__name__)
logger.warn("Exception: %s", str(e))
if wait_for_connect:
# Retry connect infinitely when http retcode 503
continue
elif retry_count:
# Retry connect 60 times when http retcode 503
retry_count -= 1
time.sleep(1)
else:
# connected succesfully
break
#end __init__
@check_homepage
def _object_create(self, res_type, obj):
obj_cls = get_object_class(res_type)
obj._pending_field_updates |= obj._pending_ref_updates
obj._pending_ref_updates = set([])
# Ignore fields with None value in json representation
# encode props + refs in object body
obj_json_param = json.dumps(obj, default=self._obj_serializer)
json_body = '{"%s":%s}' %(res_type, obj_json_param)
content = self._request_server(rest.OP_POST,
obj_cls.create_uri,
data=json_body)
obj_dict = json.loads(content)[res_type]
obj.uuid = obj_dict['uuid']
if 'parent_uuid' in obj_dict:
obj.parent_uuid = obj_dict['parent_uuid']
obj.set_server_conn(self)
# encode any prop-<list|map> operations and
# POST on /prop-collection-update
prop_coll_body = {'uuid': obj.uuid,
'updates': []}
operations = []
for prop_name in obj._pending_field_list_updates:
operations.extend(obj._pending_field_list_updates[prop_name])
for prop_name in obj._pending_field_map_updates:
operations.extend(obj._pending_field_map_updates[prop_name])
for oper, elem_val, elem_pos in operations:
if isinstance(elem_val, GeneratedsSuper):
serialized_elem_value = elem_val.exportDict('')
else:
serialized_elem_value = elem_val
prop_coll_body['updates'].append(
{'field': prop_name, 'operation': oper,
'value': serialized_elem_value, 'position': elem_pos})
# all pending fields picked up
obj.clear_pending_updates()
if prop_coll_body['updates']:
prop_coll_json = json.dumps(prop_coll_body)
self._request_server(rest.OP_POST,
self._action_uri['prop-collection-update'],
data=prop_coll_json)
return obj.uuid
# end _object_create
@check_homepage
def _object_read(self, res_type, fq_name=None, fq_name_str=None,
id=None, ifmap_id=None, fields=None):
obj_cls = get_object_class(res_type)
(args_ok, result) = self._read_args_to_id(
res_type, fq_name, fq_name_str, id, ifmap_id)
if not args_ok:
return result
id = result
uri = obj_cls.resource_uri_base[res_type] + '/' + id
if fields:
comma_sep_fields = ','.join(f for f in fields)
query_params = {'fields': comma_sep_fields}
else:
query_params = {'exclude_back_refs':True,
'exclude_children':True,}
if self._exclude_hrefs is not None:
query_params['exclude_hrefs'] = True
response = self._request_server(rest.OP_GET, uri, query_params)
obj_dict = response[res_type]
obj = obj_cls.from_dict(**obj_dict)
obj.clear_pending_updates()
obj.set_server_conn(self)
return obj
# end _object_read
@check_homepage
def _object_update(self, res_type, obj):
obj_cls = get_object_class(res_type)
# Read in uuid from api-server if not specified in obj
if not obj.uuid:
obj.uuid = self.fq_name_to_id(res_type, obj.get_fq_name())
# Generate PUT on object only if some attr was modified
content = None
if obj.get_pending_updates():
# Ignore fields with None value in json representation
obj_json_param = json.dumps(obj, default=self._obj_serializer)
if obj_json_param:
json_body = '{"%s":%s}' %(res_type, obj_json_param)
uri = obj_cls.resource_uri_base[res_type] + '/' + obj.uuid
content = self._request_server(rest.OP_PUT, uri, data=json_body)
# Generate POST on /prop-collection-update if needed/pending
prop_coll_body = {'uuid': obj.uuid,
'updates': []}
operations = []
for prop_name in obj._pending_field_list_updates:
operations.extend(obj._pending_field_list_updates[prop_name])
for prop_name in obj._pending_field_map_updates:
operations.extend(obj._pending_field_map_updates[prop_name])
for oper, elem_val, elem_pos in operations:
if isinstance(elem_val, GeneratedsSuper):
serialized_elem_value = elem_val.exportDict('')
else:
serialized_elem_value = elem_val
prop_coll_body['updates'].append(
{'field': prop_name, 'operation': oper,
'value': serialized_elem_value, 'position': elem_pos})
if prop_coll_body['updates']:
prop_coll_json = json.dumps(prop_coll_body)
self._request_server(rest.OP_POST,
self._action_uri['prop-collection-update'],
data=prop_coll_json)
# Generate POST on /ref-update if needed/pending
for ref_name in obj._pending_ref_updates:
ref_orig = set([(x.get('uuid'),
tuple(x.get('to', [])), x.get('attr'))
for x in getattr(obj, '_original_' + ref_name, [])])
ref_new = set([(x.get('uuid'),
tuple(x.get('to', [])), x.get('attr'))
for x in getattr(obj, ref_name, [])])
for ref in ref_orig - ref_new:
self.ref_update(res_type, obj.uuid, ref_name, ref[0],
list(ref[1]), 'DELETE')
for ref in ref_new - ref_orig:
self.ref_update(res_type, obj.uuid, ref_name, ref[0],
list(ref[1]), 'ADD', ref[2])
obj.clear_pending_updates()
return content
# end _object_update
@check_homepage
def _objects_list(self, res_type, parent_id=None, parent_fq_name=None,
obj_uuids=None, back_ref_id=None, fields=None,
detail=False, count=False, filters=None, shared=False):
return self.resource_list(res_type, parent_id=parent_id,
parent_fq_name=parent_fq_name, back_ref_id=back_ref_id,
obj_uuids=obj_uuids, fields=fields, detail=detail, count=count,
filters=filters, shared=shared)
# end _objects_list
@check_homepage
def _object_delete(self, res_type, fq_name=None, id=None, ifmap_id=None):
obj_cls = get_object_class(res_type)
(args_ok, result) = self._read_args_to_id(
res_type=res_type, fq_name=fq_name, id=id, ifmap_id=ifmap_id)
if not args_ok:
return result
id = result
uri = obj_cls.resource_uri_base[res_type] + '/' + id
content = self._request_server(rest.OP_DELETE, uri)
# end _object_delete
def _object_get_default_id(self, res_type):
obj_cls = get_object_class(res_type)
return self.fq_name_to_id(res_type, obj_cls().get_fq_name())
# end _object_get_default_id
def _obj_serializer_diff(self, obj):
if hasattr(obj, 'serialize_to_json'):
return obj.serialize_to_json(obj.get_pending_updates())
else:
return dict((k, v) for k, v in obj.__dict__.iteritems())
#end _obj_serializer_diff
def _obj_serializer_all(self, obj):
if hasattr(obj, 'serialize_to_json'):
return obj.serialize_to_json()
else:
return dict((k, v) for k, v in obj.__dict__.iteritems())
#end _obj_serializer_all
def _create_api_server_session(self):
self._api_server_session = requests.Session()
adapter = requests.adapters.HTTPAdapter(
pool_connections=self._max_conns_per_pool,
pool_maxsize=self._max_pools)
ssladapter = ssl_adapter.SSLAdapter(ssl.PROTOCOL_SSLv23)
ssladapter.init_poolmanager(
connections=self._max_conns_per_pool,
maxsize=self._max_pools)
self._api_server_session.mount("http://", adapter)
self._api_server_session.mount("https://", ssladapter)
#end _create_api_server_session
# Authenticate with configured service
def _authenticate(self, response=None, headers=None):
if self._authn_type is None:
return headers
if self._authn_token_url:
url = self._authn_token_url
else:
url = "%s://%s:%s%s" % (self._authn_protocol, self._authn_server, self._authn_port,
self._authn_url)
new_headers = headers or {}
try:
if self._ksinsecure:
response = requests.post(url, data=self._authn_body,
headers=self._DEFAULT_AUTHN_HEADERS, verify=False)
elif not self._ksinsecure and self._use_ks_certs:
response = requests.post(url, data=self._authn_body,
headers=self._DEFAULT_AUTHN_HEADERS, verify=self._kscertbundle)
else:
response = requests.post(url, data=self._authn_body,
headers=self._DEFAULT_AUTHN_HEADERS)
except Exception as e:
errmsg = 'Unable to connect to keystone for authentication. '
errmsg += 'Exception %s' %(e)
raise RuntimeError(errmsg)
if (response.status_code == 200) or (response.status_code == 201):
# plan is to re-issue original request with new token
if 'v2' in self._authn_url:
authn_content = json.loads(response.text)
self._auth_token = authn_content['access']['token']['id']
else:
self._auth_token = response.headers['x-subject-token']
new_headers['X-AUTH-TOKEN'] = self._auth_token
return new_headers
else:
raise RuntimeError('Authentication Failure')
#end _authenticate
def _http_get(self, uri, headers=None, query_params=None):
url = "%s://%s:%s%s" \
% (self._api_connect_protocol,self._web_host, self._web_port, uri)
if self._apiinsecure:
response = self._api_server_session.get(url, headers=headers,
params=query_params,verify=False)
elif not self._apiinsecure and self._use_api_certs:
response = self._api_server_session.get(url, headers=headers,
params=query_params,verify=self._apicertbundle)
else:
response = self._api_server_session.get(url, headers=headers,
params=query_params)
#print 'Sending Request URL: ' + pformat(url)
#print ' Headers: ' + pformat(headers)
#print ' QParams: ' + pformat(query_params)
#response = self._api_server_session.get(url, headers = headers,
# params = query_params)
#print 'Received Response: ' + pformat(response.text)
return (response.status_code, response.text)
#end _http_get
def _http_post(self, uri, body, headers):
url = "%s://%s:%s%s" \
% (self._api_connect_protocol,self._web_host, self._web_port, uri)
if self._apiinsecure:
response = self._api_server_session.post(url, data=body,
headers=headers, verify=False)
elif not self._apiinsecure and self._use_api_certs:
response = self._api_server_session.post(url, data=body,
headers=headers, verify=self._apicertbundle)
else:
response = self._api_server_session.post(url, data=body,
headers=headers)
return (response.status_code, response.text)
#end _http_post
def _http_delete(self, uri, body, headers):
url = "%s://%s:%s%s" \
% (self._api_connect_protocol,self._web_host, self._web_port, uri)
if self._apiinsecure:
response = self._api_server_session.delete(url, data=body,
headers=headers, verify=False)
elif not self._apiinsecure and self._use_api_certs:
response = self._api_server_session.delete(url, data=body,
headers=headers, verify=self._apicertbundle)
else:
response = self._api_server_session.delete(url, data=body,
headers=headers)
return (response.status_code, response.text)
#end _http_delete
def _http_put(self, uri, body, headers):
url = "%s://%s:%s%s" \
% (self._api_connect_protocol,self._web_host, self._web_port, uri)
if self._apiinsecure:
response = self._api_server_session.put(url, data=body,
headers=headers, verify=False)
elif not self._apiinsecure and self._use_api_certs:
response = self._api_server_session.put(url, data=body,
headers=headers, verify=self._apicertbundle)
else:
response = self._api_server_session.put(url, data=body,
headers=headers)
return (response.status_code, response.text)
#end _http_delete
def _parse_homepage(self, py_obj):
srv_root_url = py_obj['href']
self._srv_root_url = srv_root_url
for link in py_obj['links']:
# strip base from *_url to get *_uri
uri = link['link']['href'].replace(srv_root_url, '')
if link['link']['rel'] == 'collection':
cls = utils.obj_type_to_vnc_class(link['link']['name'], __name__)
if not cls:
continue
cls.create_uri = uri
elif link['link']['rel'] == 'resource-base':
cls = utils.obj_type_to_vnc_class(link['link']['name'], __name__)
if not cls:
continue
resource_type = link['link']['name']
cls.resource_uri_base[resource_type] = uri
elif link['link']['rel'] == 'action':
act_type = link['link']['name']
self._action_uri[act_type] = uri
#end _parse_homepage
def _find_url(self, json_body, resource_name):
rname = unicode(resource_name)
py_obj = json.loads(json_body)
pprint.pprint(py_obj)
for link in py_obj['links']:
if link['link']['name'] == rname:
return link['link']['href']
return None
#end _find_url
def _read_args_to_id(self, res_type, fq_name=None, fq_name_str=None,
id=None, ifmap_id=None):
arg_count = ((fq_name is not None) + (fq_name_str is not None) +
(id is not None) + (ifmap_id is not None))
if (arg_count == 0):
return (False, "at least one of the arguments has to be provided")
elif (arg_count > 1):
return (False, "only one of the arguments should be provided")
if id:
return (True, id)
if fq_name:
return (True, self.fq_name_to_id(res_type, fq_name))
if fq_name_str:
return (True, self.fq_name_to_id(res_type, fq_name_str.split(':')))
if ifmap_id:
return (True, self.ifmap_to_id(ifmap_id))
#end _read_args_to_id
def _request_server(self, op, url, data=None, retry_on_error=True,
retry_after_authn=False, retry_count=30):
if not self._srv_root_url:
raise ConnectionError("Unable to retrive the api server root url.")
return self._request(op, url, data=data, retry_on_error=retry_on_error,
retry_after_authn=retry_after_authn,
retry_count=retry_count)
#end _request_server
def _log_curl(self, op, url, data=None):
op_str = {rest.OP_GET: 'GET', rest.OP_POST: 'POST', rest.OP_DELETE: 'DELETE', rest.OP_PUT: 'PUT'}
base_url="http://%s:%s" %(self._authn_server, self._web_port)
cmd_url="%s%s" %(base_url, url)
cmd_hdr=None
cmd_op=str(op_str[op])
cmd_data=None
header_list = [ j + ":" + k for (j,k) in self._headers.items()]
header_string = ''.join(['-H "' + str(i) + '" ' for i in header_list])
pattern=re.compile(r'(.*-H "X-AUTH-TOKEN:)[0-9a-z]+(")')
cmd_hdr=re.sub(pattern,r'\1$TOKEN\2',header_string)
if op == rest.OP_GET:
if data:
query_string="?" + "&".join([ str(i)+ "=" + str(j) for (i,j) in data.items()])
cmd_url=base_url+url+query_string
elif op == rest.OP_DELETE:
pass
else:
cmd_data=str(data)
if cmd_data:
cmd="curl -X %s %s -d '%s' %s" %(cmd_op, cmd_hdr, cmd_data, cmd_url)
else:
cmd="curl -X %s %s %s" %(cmd_op, cmd_hdr, cmd_url)
self._curl_logger.debug(cmd)
#End _log_curl
def _request(self, op, url, data=None, retry_on_error=True,
retry_after_authn=False, retry_count=30):
retried = 0
if self._curl_logging:
self._log_curl(op=op,url=url,data=data)
while True:
try:
if (op == rest.OP_GET):
(status, content) = self._http_get(
url, headers=self._headers, query_params=data)
if status == 200:
content = json.loads(content)
elif (op == rest.OP_POST):
(status, content) = self._http_post(url, body=data,
headers=self._headers)
elif (op == rest.OP_DELETE):
(status, content) = self._http_delete(url, body=data,
headers=self._headers)
elif (op == rest.OP_PUT):
(status, content) = self._http_put(url, body=data,
headers=self._headers)
else:
raise ValueError
except ConnectionError:
if not retry_on_error:
raise ConnectionError
time.sleep(1)
self._create_api_server_session()
continue
if status == 200:
return content
# Exception Response, see if it can be resolved
if ((status == 401) and (not self._auth_token_input) and (not retry_after_authn)):
self._headers = self._authenticate(content, self._headers)
# Recursive call after authentication (max 1 level)
content = self._request(op, url, data=data, retry_after_authn=True)
return content
elif status == 404:
raise NoIdError('Error: oper %s url %s body %s response %s'
% (op, url, data, content))
elif status == 403:
raise PermissionDenied(content)
elif status == 412:
raise OverQuota(content)
elif status == 409:
raise RefsExistError(content)
elif status == 504:
# Request sent to API server, but no response came within 50s
raise TimeOutError('Gateway Timeout 504')
elif status in [502, 503]:
# 502: API server died after accepting request, so retry
# 503: no API server available even before sending the request
retried += 1
if retried >= retry_count:
raise ServiceUnavailableError('Service Unavailable Timeout %d' % status)
time.sleep(1)
continue
elif status == 400:
raise BadRequest(status, content)
else: # Unknown Error
raise HttpError(status, content)
# end while True
#end _request_server
def _prop_collection_post(
self, obj_uuid, obj_field, oper, value, position):
uri = self._action_uri['prop-collection-update']
if isinstance(value, GeneratedsSuper):
serialized_value = value.exportDict('')
else:
serialized_value = value
oper_param = {'field': obj_field,
'operation': oper,
'value': serialized_value}
if position:
oper_param['position'] = position
dict_body = {'uuid': obj_uuid, 'updates': [oper_param]}
return self._request_server(
rest.OP_POST, uri, data=json.dumps(dict_body))
# end _prop_collection_post
def _prop_collection_get(self, obj_uuid, obj_field, position):
uri = self._action_uri['prop-collection-get']
query_params = {'uuid': obj_uuid, 'fields': obj_field}
if position:
query_params['position'] = position
content = self._request_server(
rest.OP_GET, uri, data=query_params)
return content[obj_field]
# end _prop_collection_get
def _prop_map_get_elem_key(self, id, obj_field, elem):
_, res_type = self.id_to_fq_name_type(id)
obj_class = utils.obj_type_to_vnc_class(res_type, __name__)
key_name = obj_class.prop_map_field_key_names[obj_field]
if isinstance(value, GeneratedsSuper):
return getattr(value, key_name)
return value[key_name]
# end _prop_map_get_elem_key
@check_homepage
def prop_list_add_element(self, obj_uuid, obj_field, value, position=None):
return self._prop_collection_post(
obj_uuid, obj_field, 'add', value, position)
# end prop_list_add_element
@check_homepage
def prop_list_modify_element(self, obj_uuid, obj_field, value, position):
return self._prop_collection_post(
obj_uuid, obj_field, 'modify', value, position)
# end prop_list_modify_element
@check_homepage
def prop_list_delete_element(self, obj_uuid, obj_field, position):
return self._prop_collection_post(
obj_uuid, obj_field, 'delete', None, position)
# end prop_list_delete_element
@check_homepage
def prop_list_get(self, obj_uuid, obj_field, position=None):
return self._prop_collection_get(obj_uuid, obj_field, position)
# end prop_list_get
@check_homepage
def prop_map_set_element(self, obj_uuid, obj_field, value):
position = self._prop_map_get_elem_key(obj_uuid, obj_field, value)
return self._prop_collection_post(
obj_uuid, obj_field, 'set', value, position)
# end prop_map_set_element
@check_homepage
def prop_map_delete_element(self, obj_uuid, obj_field, position):
return self._prop_collection_post(
obj_uuid, obj_field, 'delete', None, position)
# end prop_map_delete_element
@check_homepage
def prop_map_get(self, obj_uuid, obj_field, position=None):
return self._prop_collection_get(obj_uuid, obj_field, position)
# end prop_list_get
@check_homepage
def ref_update(self, obj_type, obj_uuid, ref_type, ref_uuid,
ref_fq_name, operation, attr=None):
if ref_type.endswith(('_refs', '-refs')):
ref_type = ref_type[:-5].replace('_', '-')
json_body = json.dumps({'type': obj_type, 'uuid': obj_uuid,
'ref-type': ref_type, 'ref-uuid': ref_uuid,
'ref-fq-name': ref_fq_name,
'operation': operation, 'attr': attr},
default=self._obj_serializer_diff)
uri = self._action_uri['ref-update']
try:
content = self._request_server(rest.OP_POST, uri, data=json_body)
except HttpError as he:
if he.status_code == 404:
return None
raise he
return json.loads(content)['uuid']
#end ref_update
@check_homepage
def ref_relax_for_delete(self, obj_uuid, ref_uuid):
# don't account for reference of <obj_uuid> in delete of <ref_uuid> in future
json_body = json.dumps({'uuid': obj_uuid, 'ref-uuid': ref_uuid})
uri = self._action_uri['ref-relax-for-delete']
try:
content = self._request_server(rest.OP_POST, uri, data=json_body)
except HttpError as he:
if he.status_code == 404:
return None
raise he
return json.loads(content)['uuid']
# end ref_relax_for_delete
def obj_to_id(self, obj):
return self.fq_name_to_id(obj.get_type(), obj.get_fq_name())
#end obj_to_id
@check_homepage
def fq_name_to_id(self, obj_type, fq_name):
json_body = json.dumps({'type': obj_type, 'fq_name': fq_name})
uri = self._action_uri['name-to-id']
try:
content = self._request_server(rest.OP_POST, uri, data=json_body)
except HttpError as he:
if he.status_code == 404:
return None
raise he
return json.loads(content)['uuid']
#end fq_name_to_id
@check_homepage
def id_to_fq_name(self, id):
json_body = json.dumps({'uuid': id})
uri = self._action_uri['id-to-name']
content = self._request_server(rest.OP_POST, uri, data=json_body)
return json.loads(content)['fq_name']
#end id_to_fq_name
@check_homepage
def id_to_fq_name_type(self, id):
json_body = json.dumps({'uuid': id})
uri = self._action_uri['id-to-name']
content = self._request_server(rest.OP_POST, uri, data=json_body)
json_rsp = json.loads(content)
return (json_rsp['fq_name'], json_rsp['type'])
# This is required only for helping ifmap-subscribers using rest publish
@check_homepage
def ifmap_to_id(self, ifmap_id):
json_body = json.dumps({'ifmap_id': ifmap_id})
uri = self._action_uri['ifmap-to-id']
try:
content = self._request_server(rest.OP_POST, uri, data=json_body)