218 lines
7.9 KiB
Python
218 lines
7.9 KiB
Python
# Copyright (c) 2018 OpenStack Foundation.
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from importlib import import_module
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try:
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from importlib.machinery import SourceFileLoader
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def source_loader_workflow_instance(mname, mpath, conf, session_id, data):
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mi = SourceFileLoader(mname, mpath).load_module()
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return mi.Workflow(conf, session_id, data)
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except ImportError:
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from imp import load_source
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def source_loader_workflow_instance(mname, mpath, conf, session_id, data):
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mi = load_source(mname, mpath)
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return mi.Workflow(conf, session_id, data)
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import os
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from oslo_config import cfg
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from oslo_log import log as logging
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import oslo_messaging as messaging
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from oslo_service import service
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from shutil import rmtree
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from uuid import uuid1 as generate_uuid
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from fenix import context
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from fenix.utils.download import download_url
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import fenix.utils.identity_auth
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MAX_SESSIONS = 3
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LOG = logging.getLogger(__name__)
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CONF = cfg.CONF
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opts = [
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cfg.StrOpt('host',
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default="127.0.0.1",
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help="API host IP"),
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cfg.IntOpt('port',
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default=5000,
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help="API port to use."),
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cfg.IntOpt('project_maintenance_reply',
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default=40,
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help="Project maintenance reply confirmation time in seconds"),
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cfg.IntOpt('project_scale_in_reply',
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default=60,
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help="Project scale in reply confirmation time in seconds"),
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cfg.StrOpt('local_cache_dir',
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default="/tmp",
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help="Local cache directory"),
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cfg.StrOpt('live_migration_retries',
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default=5,
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help="Number of live migration retries"),
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cfg.StrOpt('live_migration_wait_time',
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default=600,
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help="How long to wait live migration to be done"),
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]
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CONF.register_opts(fenix.utils.identity_auth.os_opts, group='service_user')
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CONF.register_opts(opts)
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class RPCClient(object):
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def __init__(self, target):
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super(RPCClient, self).__init__()
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self._client = messaging.RPCClient(
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target=target,
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transport=messaging.get_rpc_transport(cfg.CONF),
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)
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def cast(self, name, **kwargs):
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ctx = context.current()
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self._client.cast(ctx.to_dict(), name, **kwargs)
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def call(self, name, **kwargs):
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return self._client.call({}, name, **kwargs)
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class EngineEndpoint(object):
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def __init__(self):
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self.workflow_sessions = {}
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def _validate_session(self, session_id):
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if session_id not in self.workflow_sessions.keys():
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return False
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return True
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def admin_get(self, ctx):
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"""Get maintenance workflow sessions"""
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LOG.info("EngineEndpoint: admin_get")
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return {"sessions": self.workflow_sessions.keys()}
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def admin_create_session(self, ctx, data):
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"""Create maintenance workflow session thread"""
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LOG.info("EngineEndpoint: admin_create_session")
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LOG.info("data: %s" % data)
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if len(self.workflow_sessions.keys()) == MAX_SESSIONS:
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LOG.error("Too many sessions: %d" % MAX_SESSIONS)
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return None
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session_id = str(generate_uuid())
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if "workflow" not in data:
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workflow = "fenix.workflow.workflows.default"
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else:
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workflow = "fenix.workflow.workflows.%s" % data["workflow"]
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LOG.info("Workflow plugin module: %s" % workflow)
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session_dir = "%s/%s" % (CONF.local_cache_dir, session_id)
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os.mkdir(session_dir)
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if "download" in data:
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os.mkdir(session_dir + "/workflow")
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os.mkdir(session_dir + "/actions")
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for url in data["download"]:
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download_url(session_dir, str(url))
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try:
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wf_plugin = getattr(import_module(workflow), 'Workflow')
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self.workflow_sessions[session_id] = wf_plugin(CONF,
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session_id,
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data)
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except ImportError:
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download_plugin_dir = session_dir + "/workflow/"
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download_plugin_file = "%s/%s.py" % (download_plugin_dir,
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data["workflow"])
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if os.path.isfile(download_plugin_file):
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self.workflow_sessions[session_id] = (
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source_loader_workflow_instance(workflow,
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download_plugin_file,
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CONF,
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session_id,
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data))
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else:
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raise Exception('%s: could not find workflow plugin %s' %
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(self.session_id, data["workflow"]))
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self.workflow_sessions[session_id].start()
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return {"session_id": session_id}
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def admin_get_session(self, ctx, session_id):
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"""Get maintenance workflow session details"""
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if not self._validate_session(session_id):
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return None
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LOG.info("EngineEndpoint: admin_get_session")
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return ({"session_id": session_id, "state":
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self.workflow_sessions[session_id].session.state})
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def admin_delete_session(self, ctx, session_id):
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"""Delete maintenance workflow session thread"""
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LOG.info("EngineEndpoint: admin_delete_session")
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self.workflow_sessions[session_id].cleanup()
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self.workflow_sessions[session_id].stop()
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self.workflow_sessions.pop(session_id)
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session_dir = "%s/%s" % (CONF.local_cache_dir, session_id)
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rmtree(session_dir)
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return {}
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def admin_update_session(self, ctx, session_id, data):
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"""Update maintenance workflow session"""
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LOG.info("EngineEndpoint: admin_update_session")
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# TBD Update data to workflow and return updated data
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return data
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def project_get_session(self, ctx, session_id, project_id):
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"""Get maintenance workflow session project specific details"""
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if not self._validate_session(session_id):
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return None
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LOG.info("EngineEndpoint: project_get_session")
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instance_ids = (self.workflow_sessions[session_id].
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state_instance_ids(project_id))
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return {"instance_ids": instance_ids}
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def project_update_session(self, ctx, session_id, project_id, data):
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"""Update maintenance workflow session project state"""
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LOG.info("EngineEndpoint: project_update_session")
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session_obj = self.workflow_sessions[session_id]
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project = session_obj.project(project_id)
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project.state = data["state"]
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if "instance_actions" in data:
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session_obj.proj_instance_actions[project_id] = (
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data["instance_actions"].copy())
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return data
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class RPCServer(service.Service):
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def __init__(self, target):
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super(RPCServer, self).__init__()
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self._server = messaging.get_rpc_server(
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target=target,
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transport=messaging.get_rpc_transport(cfg.CONF),
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endpoints=[
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EngineEndpoint()],
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executor='eventlet',
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)
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def start(self):
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super(RPCServer, self).start()
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self.tg.add_thread(self._server.start)
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def stop(self):
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super(RPCServer, self).stop()
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self._server.stop()
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def prepare_service(argv=[]):
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logging.setup(cfg.CONF, 'fenix')
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