drydock/python/drydock_provisioner/drivers/driver.py
Scott Hussey 0f39a55942 Refactor build to include Go
Adding the baclient code to Drydock requires a refactor
of the build automation to support multiple languages
and multiple artifacts included in a single Docker image

NOTE: the go source here is a placeholder 'hello world' sample

Change-Id: I1b4883f018b33b3d4fcd7cbcb6cba660fcdc93de
2018-09-04 13:13:21 -05:00

84 lines
2.7 KiB
Python

# Copyright 2017 AT&T Intellectual Property. All other 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.
"""Abstract classes for use by implemented drivers."""
from threading import Thread
import time
import drydock_provisioner.objects.fields as hd_fields
import drydock_provisioner.error as errors
from drydock_provisioner.orchestrator.actions.orchestrator import Noop
class ProviderDriver(object):
"""Generic driver for executing driver actions."""
driver_name = "generic"
driver_key = "generic"
driver_desc = "Generic Provider Driver"
def __init__(self, orchestrator=None, state_manager=None, **kwargs):
if orchestrator is None:
raise ValueError("ProviderDriver requires valid orchestrator")
self.orchestrator = orchestrator
if state_manager is None:
raise ValueError("ProviderDriver requires valid state manager")
self.state_manager = state_manager
# These are the actions that this driver supports
self.supported_actions = [hd_fields.OrchestratorAction.Noop]
def execute_task(self, task_id):
task = self.state_manager.get_task(task_id)
task_action = task.action
if task_action in self.supported_actions:
# Just use the Noop action
task_action = Noop(task, self.orchestrator, self.state_manager)
task_runner = DriverActionRunner(task_action)
task_runner.start()
while task_runner.is_alive():
time.sleep(1)
return
else:
raise errors.DriverError("Unsupported action %s for driver %s" %
(task_action, self.driver_desc))
# Execute a single task in a separate thread
class DriverActionRunner(Thread):
def __init__(self, action=None):
super().__init__()
self.action = action
self.orchestrator = action.orchestrator
self.state_manager = action.state_manager
def run(self):
self.run_action()
def run_action(self):
"""Run self.action.start() in this thread."""
if self.action is None:
raise errors.NoActionDefined(
"Runner started without a defined action.")
self.action.start()