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# Copyright (c) 2014 Hewlett-Packard Development Company, L.P.
#
# 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.
import uuid
from oslo_utils import timeutils
from heat.rpc import listener_client
SERVICE_KEYS = (
SERVICE_ID,
SERVICE_HOST,
SERVICE_HOSTNAME,
SERVICE_BINARY,
SERVICE_TOPIC,
SERVICE_ENGINE_ID,
SERVICE_REPORT_INTERVAL,
SERVICE_CREATED_AT,
SERVICE_UPDATED_AT,
SERVICE_DELETED_AT,
SERVICE_STATUS
) = (
'id',
'host',
'hostname',
'binary',
'topic',
'engine_id',
'report_interval',
'created_at',
'updated_at',
'deleted_at',
'status'
)
def format_service(service):
if service is None:
return
status = 'down'
last_updated = service.updated_at or service.created_at
check_interval = (timeutils.utcnow() - last_updated).total_seconds()
if check_interval <= 2 * service.report_interval:
status = 'up'
result = {
SERVICE_ID: service.id,
SERVICE_BINARY: service.binary,
SERVICE_ENGINE_ID: service.engine_id,
SERVICE_HOST: service.host,
SERVICE_HOSTNAME: service.hostname,
SERVICE_TOPIC: service.topic,
SERVICE_REPORT_INTERVAL: service.report_interval,
SERVICE_CREATED_AT: service.created_at,
SERVICE_UPDATED_AT: service.updated_at,
SERVICE_DELETED_AT: service.deleted_at,
SERVICE_STATUS: status
}
return result
def engine_alive(context, engine_id):
return listener_client.EngineListenerClient(
engine_id).is_alive(context)
def generate_engine_id():
return str(uuid.uuid4())
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