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# ================================================================================
# 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.
""" send notification to deploy-handler"""
import json
import logging
import requests
from .config import Config
from .discovery import DiscoveryClient
from .onap.audit import REQUEST_X_ECOMP_REQUESTID, Audit, AuditHttpCode
from .customize import CustomizerUser
POOL_SIZE = 1
class DeployHandler(object):
""" deploy-handler """
_logger = logging.getLogger("policy_handler.deploy_handler")
_lazy_inited = False
_requests_session = None
_config = None
_url = None
_url_path = None
_target_entity = None
_custom_kwargs = None
_server_instance_uuid = None
@staticmethod
def _lazy_init(audit):
""" set static properties """
if DeployHandler._lazy_inited:
return
DeployHandler._lazy_inited = True
DeployHandler._custom_kwargs = CustomizerUser.get_customizer() \
.get_deploy_handler_kwargs(audit)
if not DeployHandler._custom_kwargs \
or not isinstance(DeployHandler._custom_kwargs, dict):
DeployHandler._custom_kwargs = {}
DeployHandler._requests_session = requests.Session()
DeployHandler._requests_session.mount(
'https://',
requests.adapters.HTTPAdapter(pool_connections=POOL_SIZE, pool_maxsize=POOL_SIZE)
)
DeployHandler._requests_session.mount(
'http://',
requests.adapters.HTTPAdapter(pool_connections=POOL_SIZE, pool_maxsize=POOL_SIZE)
)
DeployHandler._target_entity = Config.config.get("deploy_handler", "deploy_handler")
DeployHandler._url = DiscoveryClient.get_service_url(audit, DeployHandler._target_entity)
DeployHandler._url_path = (DeployHandler._url or "") + '/policy'
DeployHandler._logger.info("DeployHandler url(%s)", DeployHandler._url)
@staticmethod
def policy_update(audit, message):
"""
post policy_updated message to deploy-handler
returns condition whether it needs to catch_up
"""
if not message:
return
DeployHandler._lazy_init(audit)
sub_aud = Audit(aud_parent=audit, targetEntity=DeployHandler._target_entity,
targetServiceName=DeployHandler._url_path)
headers = {REQUEST_X_ECOMP_REQUESTID : sub_aud.request_id}
msg_str = json.dumps(message)
headers_str = json.dumps(headers)
log_action = "post to {0} at {1}".format(
DeployHandler._target_entity, DeployHandler._url_path)
log_data = " msg={0} headers={1}".format(msg_str, headers_str)
log_line = log_action + log_data
DeployHandler._logger.info(log_line)
sub_aud.metrics_start(log_line)
if not DeployHandler._url:
error_msg = "no url found to {0}".format(log_line)
DeployHandler._logger.error(error_msg)
sub_aud.set_http_status_code(AuditHttpCode.SERVICE_UNAVAILABLE_ERROR.value)
audit.set_http_status_code(AuditHttpCode.SERVICE_UNAVAILABLE_ERROR.value)
sub_aud.metrics(error_msg)
return
res = None
try:
res = DeployHandler._requests_session.post(
DeployHandler._url_path, json=message, headers=headers,
**DeployHandler._custom_kwargs
)
except requests.exceptions.RequestException as ex:
error_msg = "failed to {0}: {1}{2}".format(log_action, str(ex), log_data)
DeployHandler._logger.exception(error_msg)
sub_aud.set_http_status_code(AuditHttpCode.SERVICE_UNAVAILABLE_ERROR.value)
audit.set_http_status_code(AuditHttpCode.SERVICE_UNAVAILABLE_ERROR.value)
sub_aud.metrics(error_msg)
return
sub_aud.set_http_status_code(res.status_code)
audit.set_http_status_code(res.status_code)
log_line = "response {0} from {1}: text={2}{3}" \
.format(res.status_code, log_action, res.text, log_data)
sub_aud.metrics(log_line)
DeployHandler._logger.info(log_line)
if res.status_code != requests.codes.ok:
return
result = res.json() or {}
prev_server_instance_uuid = DeployHandler._server_instance_uuid
DeployHandler._server_instance_uuid = result.get("server_instance_uuid")
need_to_catch_up = (prev_server_instance_uuid
and prev_server_instance_uuid != DeployHandler._server_instance_uuid)
if need_to_catch_up:
log_line = "need_to_catch_up: {1} != {0}" \
.format(prev_server_instance_uuid, DeployHandler._server_instance_uuid)
sub_aud.info(log_line)
DeployHandler._logger.info(log_line)
return need_to_catch_up
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