sushy-tools/sushy_tools/emulator/main.py

450 lines
14 KiB
Python
Executable File

# Copyright 2017 Red Hat, Inc.
# 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.
import argparse
from datetime import datetime
import functools
import json
import os
import ssl
import sys
from sushy_tools.emulator.resources.managers import staticdriver
from sushy_tools.emulator.resources.systems import libvirtdriver
from sushy_tools.emulator.resources.systems import novadriver
from sushy_tools import error
from sushy_tools.error import FishyError
import flask
app = flask.Flask(__name__)
# Turn off strict_slashes on all routes
app.url_map.strict_slashes = False
class Resources(object):
SYSTEMS = None
MANAGERS = None
def __new__(cls, *args, **kwargs):
config_file = os.environ.pop('SUSHY_EMULATOR_CONFIG', None)
if config_file:
app.config.from_pyfile(config_file)
if not cls.SYSTEMS:
os_cloud = (os.environ.get('OS_CLOUD') or
app.config.get('SUSHY_EMULATOR_OS_CLOUD'))
if os_cloud:
if not novadriver.is_loaded:
app.logger.error('Nova driver not loaded')
sys.exit(1)
cls.SYSTEMS = novadriver.OpenStackDriver.initialize(
app.config, os_cloud)
else:
if not libvirtdriver.is_loaded:
app.logger.error('libvirt driver not loaded')
sys.exit(1)
libvirt_uri = (
os.environ.get('SUSHY_EMULATOR_LIBVIRT_URI') or
# NOTE(etingof): left for backward compatibility
os.environ.get('SUSHY_EMULATOR_LIBVIRT_URL') or
app.config.get('SUSHY_EMULATOR_LIBVIRT_URI') or
'')
cls.SYSTEMS = libvirtdriver.LibvirtDriver.initialize(
app.config, libvirt_uri)
app.logger.debug(
'Initialized system resource backed by %s '
'driver', cls.SYSTEMS().driver)
if cls.MANAGERS is None:
cls.MANAGERS = staticdriver.StaticDriver.initialize(app.config)
app.logger.debug(
'Initialized manager resource backed by %s '
'driver', cls.MANAGERS().driver)
return super(Resources, cls).__new__(cls, *args, **kwargs)
def __enter__(self):
self.systems = self.SYSTEMS()
self.managers = self.MANAGERS()
return self
def __exit__(self, exc_type, exc_val, exc_tb):
del self.systems
del self.managers
def instance_denied(**kwargs):
deny = True
try:
deny = (kwargs['identity'] not in
app.config['SUSHY_EMULATOR_ALLOWED_INSTANCES'])
except KeyError:
deny = False
finally:
if deny:
app.logger.warning('Instance %s access denied',
kwargs.get('identity'))
return deny
def ensure_instance_access(decorated_func):
@functools.wraps(decorated_func)
def decorator(*args, **kwargs):
if instance_denied(**kwargs):
raise FishyError('Error finding instance')
return decorated_func(*args, **kwargs)
return decorator
def returns_json(decorated_func):
@functools.wraps(decorated_func)
def decorator(*args, **kwargs):
response = decorated_func(*args, **kwargs)
if isinstance(response, flask.Response):
return response
if isinstance(response, tuple):
contents, status = response
else:
contents, status = response, 200
return flask.Response(response=contents, status=status,
content_type='application/json')
return decorator
@app.errorhandler(Exception)
@returns_json
def all_exception_handler(message):
if isinstance(message, error.AliasAccessError):
url = flask.url_for(flask.request.endpoint, identity=message.args[0])
return flask.redirect(url, code=307, Response=flask.Response)
return flask.render_template('error.json', message=message), 500
@app.route('/redfish/v1/')
@returns_json
def root_resource():
return flask.render_template('root.json')
@app.route('/redfish/v1/Managers')
@returns_json
def manager_collection_resource():
with Resources() as resources:
app.logger.debug('Serving managers list')
return flask.render_template(
'manager_collection.json',
manager_count=len(resources.managers.managers),
managers=resources.managers.managers)
@app.route('/redfish/v1/Managers/<identity>', methods=['GET'])
@returns_json
def manager_resource(identity):
if flask.request.method == 'GET':
with Resources() as resources:
app.logger.debug('Serving resources for manager "%s"', identity)
managers = resources.managers
uuid = managers.uuid(identity)
# the first manager gets all resources
if uuid == managers.managers[0]:
systems = resources.systems.systems
else:
systems = []
return flask.render_template(
'manager.json',
dateTime=datetime.now().strftime('%Y-%M-%dT%H:%M:%S+00:00'),
identity=identity,
name=resources.managers.name(identity),
uuid=uuid,
serviceEntryPointUUID=resources.managers.uuid(identity),
systems=systems
)
@app.route('/redfish/v1/Systems')
@returns_json
def system_collection_resource():
with Resources() as resources:
systems = [system for system in resources.systems.systems
if not instance_denied(identity=system)]
app.logger.debug('Serving systems list')
return flask.render_template(
'system_collection.json', system_count=len(systems), systems=systems)
@app.route('/redfish/v1/Systems/<identity>', methods=['GET', 'PATCH'])
@ensure_instance_access
@returns_json
def system_resource(identity):
if flask.request.method == 'GET':
app.logger.debug('Serving resources for system "%s"', identity)
with Resources() as resources:
return flask.render_template(
'system.json',
identity=identity,
name=resources.systems.name(identity),
uuid=resources.systems.uuid(identity),
power_state=resources.systems.get_power_state(identity),
total_memory_gb=resources.systems.get_total_memory(identity),
total_cpus=resources.systems.get_total_cpus(identity),
boot_source_target=resources.systems.get_boot_device(identity),
boot_source_mode=resources.systems.get_boot_mode(identity),
managers=resources.managers.managers[:1]
)
elif flask.request.method == 'PATCH':
boot = flask.request.json.get('Boot')
if not boot:
return 'PATCH only works for the Boot element', 400
with Resources() as resources:
target = boot.get('BootSourceOverrideTarget')
if target:
# NOTE(lucasagomes): In libvirt we always set the boot
# device frequency to "continuous" so, we are ignoring the
# BootSourceOverrideEnabled element here
resources.systems.set_boot_device(identity, target)
app.logger.info('Set boot device to "%s" for system "%s"',
target, identity)
mode = boot.get('BootSourceOverrideMode')
if mode:
resources.systems.set_boot_mode(identity, mode)
app.logger.info('Set boot mode to "%s" for system "%s"',
mode, identity)
if not target and not mode:
return ('Missing the BootSourceOverrideTarget and/or '
'BootSourceOverrideMode element', 400)
return '', 204
@app.route('/redfish/v1/Systems/<identity>/EthernetInterfaces',
methods=['GET'])
@ensure_instance_access
@returns_json
def ethernet_interfaces_collection(identity):
with Resources() as resources:
nics = resources.systems.get_nics(identity)
return flask.render_template(
'ethernet_interfaces_collection.json', identity=identity,
nics=nics)
@app.route('/redfish/v1/Systems/<identity>/EthernetInterfaces/<nic_id>',
methods=['GET'])
@ensure_instance_access
@returns_json
def ethernet_interface(identity, nic_id):
with Resources() as resources:
nics = resources.systems.get_nics(identity)
for nic in nics:
if nic['id'] == nic_id:
return flask.render_template(
'ethernet_interface.json', identity=identity, nic=nic)
return 'Not found', 404
@app.route('/redfish/v1/Systems/<identity>/Actions/ComputerSystem.Reset',
methods=['POST'])
@ensure_instance_access
@returns_json
def system_reset_action(identity):
reset_type = flask.request.json.get('ResetType')
with Resources() as resources:
resources.systems.set_power_state(identity, reset_type)
app.logger.info('System "%s" power state set to "%s"',
identity, reset_type)
return '', 204
@app.route('/redfish/v1/Systems/<identity>/BIOS', methods=['GET'])
@ensure_instance_access
@returns_json
def bios(identity):
with Resources() as resources:
bios = resources.systems.get_bios(identity)
app.logger.debug('Serving BIOS for system "%s"', identity)
return flask.render_template(
'bios.json',
identity=identity,
bios_current_attributes=json.dumps(bios, sort_keys=True, indent=6))
@app.route('/redfish/v1/Systems/<identity>/BIOS/Settings',
methods=['GET', 'PATCH'])
@ensure_instance_access
@returns_json
def bios_settings(identity):
if flask.request.method == 'GET':
with Resources() as resources:
bios = resources.systems.get_bios(identity)
app.logger.debug('Serving BIOS Settings for system "%s"', identity)
return flask.render_template(
'bios_settings.json',
identity=identity,
bios_pending_attributes=json.dumps(bios, sort_keys=True, indent=6))
elif flask.request.method == 'PATCH':
attributes = flask.request.json.get('Attributes')
with Resources() as resources:
resources.systems.set_bios(identity, attributes)
app.logger.info('System "%s" BIOS attributes "%s" updated',
identity, attributes)
return '', 204
@app.route('/redfish/v1/Systems/<identity>/BIOS/Actions/Bios.ResetBios',
methods=['POST'])
@ensure_instance_access
@returns_json
def system_reset_bios(identity):
with Resources() as resources:
resources.systems.reset_bios(identity)
app.logger.info('BIOS for system "%s" reset', identity)
return '', 204
def parse_args():
parser = argparse.ArgumentParser('sushy-emulator')
parser.add_argument('--config',
type=str,
help='Config file path. Can also be set via '
'environment variable SUSHY_EMULATOR_CONFIG.')
parser.add_argument('-i', '--interface',
type=str,
help='IP address of the local interface to listen '
'at. Can also be set via config variable '
'SUSHY_EMULATOR_LISTEN_IP. Default is all '
'local interfaces.')
parser.add_argument('-p', '--port',
type=int,
help='TCP port to bind the server to. Can also be '
'set via config variable '
'SUSHY_EMULATOR_LISTEN_PORT. Default is 8000.')
parser.add_argument('--ssl-certificate',
type=str,
help='SSL certificate to use for HTTPS. Can also be '
'set via config variable SUSHY_EMULATOR_SSL_CERT.')
parser.add_argument('--ssl-key',
type=str,
help='SSL key to use for HTTPS. Can also be set'
'via config variable SUSHY_EMULATOR_SSL_KEY.')
backend_group = parser.add_mutually_exclusive_group()
backend_group.add_argument('--os-cloud',
type=str,
help='OpenStack cloud name. Can also be set '
'via environment variable OS_CLOUD or '
'config variable SUSHY_EMULATOR_OS_CLOUD.'
)
backend_group.add_argument('--libvirt-uri',
type=str,
help='The libvirt URI. Can also be set via '
'environment variable '
'SUSHY_EMULATOR_LIBVIRT_URI. '
'Default is qemu:///system')
return parser.parse_args()
def main():
args = parse_args()
if args.config:
os.environ['SUSHY_EMULATOR_CONFIG'] = args.config
if args.os_cloud:
os.environ['OS_CLOUD'] = args.os_cloud
if args.libvirt_uri:
os.environ['SUSHY_EMULATOR_LIBVIRT_URI'] = args.libvirt_uri
ssl_context = None
ssl_certificate = (args.ssl_certificate or
app.config.get('SUSHY_EMULATOR_SSL_CERT'))
ssl_key = args.ssl_key or app.config.get('SUSHY_EMULATOR_SSL_KEY')
if ssl_certificate and ssl_key:
ssl_context = ssl.SSLContext(ssl.PROTOCOL_TLSv1_2)
ssl_context.load_cert_chain(ssl_certificate, ssl_key)
app.run(host=(args.interface or
app.config.get('SUSHY_EMULATOR_LISTEN_IP')),
port=(args.port or
app.config.get('SUSHY_EMULATOR_LISTEN_PORT', 8000)),
ssl_context=ssl_context)
return 0
if __name__ == '__main__':
sys.exit(main())