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# ============LICENSE_START=======================================================
# Copyright (c) 2017-2018 AT&T Intellectual Property. All rights reserved.
# ================================================================================
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# ============LICENSE_END=========================================================
#
# ECOMP is a trademark and service mark of AT&T Intellectual Property.
import json
import requests
import connexion
import uuid
from flask import Response
from config_binding_service import client, get_consul_uri
from config_binding_service.logging import audit, utc, error
def _get_helper(json_expecting_func, **kwargs):
"""
Helper function used by several functions below
"""
try:
payload = json_expecting_func(**kwargs)
response, status_code, mimetype = json.dumps(payload), 200, "application/json"
except client.BadRequest as exc:
response, status_code, mimetype = exc.response, exc.code, "text/plain"
except client.CantGetConfig as exc:
response, status_code, mimetype = exc.response, exc.code, "text/plain"
except Exception as exc:
response, status_code, mimetype = "Unknown error", 500, "text/plain"
return response, status_code, mimetype
def _get_or_generate_xer(raw_request):
"""get or generate the transaction id"""
xer = raw_request.headers.get("x-onap-requestid", None)
if xer is None:
# some components are still using the old name
xer = raw_request.headers.get("x-ecomp-requestid", None)
if xer is None:
# the user did NOT supply a request id, generate one
xer = str(uuid.uuid4())
return xer
def bind_all(service_component_name):
"""
Get all the keys in Consul for this SCN, and bind the config
"""
xer = _get_or_generate_xer(connexion.request)
bts = utc()
response, status_code, mimetype = _get_helper(client.resolve_all, service_component_name=service_component_name)
audit(connexion.request, bts, xer, status_code, __name__, "called for component {0}".format(service_component_name))
# Even though some older components might be using the ecomp name, we return the proper one
return Response(response=response, status=status_code, mimetype=mimetype, headers={"x-onap-requestid": xer})
def bind_config_for_scn(service_component_name):
"""
Bind just the config for this SCN
"""
xer = _get_or_generate_xer(connexion.request)
bts = utc()
response, status_code, mimetype = _get_helper(client.resolve, service_component_name=service_component_name)
audit(connexion.request, bts, xer, status_code, __name__, "called for component {0}".format(service_component_name))
return Response(response=response, status=status_code, mimetype=mimetype, headers={"x-onap-requestid": xer})
def get_key(key, service_component_name):
"""
Get a single key k of the form service_component_name:k from Consul.
Should not be used and will return a BAD REQUEST for k=policies because it's a complex object
"""
xer = _get_or_generate_xer(connexion.request)
bts = utc()
response, status_code, mimetype = _get_helper(client.get_key, key=key, service_component_name=service_component_name)
audit(connexion.request, bts, xer, status_code, __name__, "called for component {0}".format(service_component_name))
return Response(response=response, status=status_code, mimetype=mimetype, headers={"x-onap-requestid": xer})
def healthcheck():
"""
CBS Healthcheck
"""
xer = _get_or_generate_xer(connexion.request)
bts = utc()
res = requests.get("{0}/v1/catalog/service/config_binding_service".format(get_consul_uri()))
status = res.status_code
if status == 200:
response = "CBS is alive and Consul connection OK"
else:
response = "CBS is alive but cannot reach Consul"
# treating this as a WARN because this could be a temporary network glitch. Also per EELF guidelines this is a 200 ecode (availability)
error(connexion.request, xer, "WARN", 200, tgt_entity="Consul", tgt_path="/v1/catalog/service/config_binding_service", msg=response)
audit(connexion.request, bts, xer, status, __name__, msg=response)
return Response(response=response, status=status)
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