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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 .customize import CustomizerUser
from .discovery import DiscoveryClient
from .onap.audit import REQUEST_X_ECOMP_REQUESTID, AuditHttpCode, Metrics
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_policy = None
_target_entity = None
_custom_kwargs = None
_server_instance_uuid = None
@staticmethod
def _lazy_init(audit, rediscover=False):
""" set static properties """
if DeployHandler._lazy_inited and not rediscover:
return
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 = {}
if not DeployHandler._requests_session:
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)
)
config_dh = Config.settings.get("deploy_handler")
if config_dh and isinstance(config_dh, dict):
# dns based routing to deployment-handler
# config for policy-handler >= 2.4.0
# "deploy_handler" : {
# "target_entity" : "deployment_handler",
# "url" : "http://deployment_handler:8188"
# }
DeployHandler._target_entity = config_dh.get("target_entity", "deployment_handler")
DeployHandler._url = config_dh.get("url")
DeployHandler._logger.info("dns based routing to %s: url(%s)",
DeployHandler._target_entity, DeployHandler._url)
if not DeployHandler._url:
# discover routing to deployment-handler at consul-services
if not isinstance(config_dh, dict):
# config for policy-handler <= 2.3.1
# "deploy_handler" : "deployment_handler"
DeployHandler._target_entity = str(config_dh or "deployment_handler")
DeployHandler._url = DiscoveryClient.get_service_url(audit,
DeployHandler._target_entity)
DeployHandler._url_policy = str(DeployHandler._url or "") + '/policy'
DeployHandler._logger.info(
"got %s policy url(%s)", DeployHandler._target_entity, DeployHandler._url_policy)
DeployHandler._lazy_inited = bool(DeployHandler._url)
@staticmethod
def policy_update(audit, message, rediscover=False):
"""
post policy_updated message to deploy-handler
returns condition whether it needs to catch_up
"""
if not message:
return
DeployHandler._lazy_init(audit, rediscover)
metrics = Metrics(aud_parent=audit, targetEntity=DeployHandler._target_entity,
targetServiceName=DeployHandler._url_policy)
headers = {REQUEST_X_ECOMP_REQUESTID : metrics.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_policy)
log_data = " msg={0} headers={1}".format(msg_str, headers_str)
log_line = log_action + log_data
DeployHandler._logger.info(log_line)
metrics.metrics_start(log_line)
if not DeployHandler._url:
error_msg = "no url found to {0}".format(log_line)
DeployHandler._logger.error(error_msg)
metrics.set_http_status_code(AuditHttpCode.SERVICE_UNAVAILABLE_ERROR.value)
audit.set_http_status_code(AuditHttpCode.SERVICE_UNAVAILABLE_ERROR.value)
metrics.metrics(error_msg)
return
res = None
try:
res = DeployHandler._requests_session.post(
DeployHandler._url_policy, json=message, headers=headers,
**DeployHandler._custom_kwargs
)
except Exception as ex:
error_code = (AuditHttpCode.SERVICE_UNAVAILABLE_ERROR.value
if isinstance(ex, requests.exceptions.RequestException)
else AuditHttpCode.SERVER_INTERNAL_ERROR.value)
error_msg = ("failed to {0} {1}: {2}{3}"
.format(log_action, type(ex).__name__, str(ex), log_data))
DeployHandler._logger.exception(error_msg)
metrics.set_http_status_code(error_code)
audit.set_http_status_code(error_code)
metrics.metrics(error_msg)
return
metrics.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)
metrics.metrics(log_line)
if res.status_code != requests.codes.ok:
DeployHandler._logger.error(log_line)
return
DeployHandler._logger.info(log_line)
result = res.json() or {}
prev_server_instance_uuid = DeployHandler._server_instance_uuid
DeployHandler._server_instance_uuid = result.get("server_instance_uuid")
deployment_handler_changed = (prev_server_instance_uuid
and prev_server_instance_uuid != DeployHandler._server_instance_uuid)
if deployment_handler_changed:
log_line = ("deployment_handler_changed: {1} != {0}"
.format(prev_server_instance_uuid, DeployHandler._server_instance_uuid))
metrics.info(log_line)
DeployHandler._logger.info(log_line)
return deployment_handler_changed
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