stackforge/libra
Code Issues Proposed changes

Adding in api server

Browse Source 
* API now executes (not fully working but a good start)
* Load balancers list now works
* Load balancer detail now works
* Fix pep8, pyflakes + Shrews' comments
* Temporarily make test cases pass

Change-Id: Ia082b8bb60a95abee086073908256649e4ebca23
This commit is contained in:
David Lenwell 2013-04-25 21:29:46 +00:00 committed by Andrew Hutchings
parent 12f2e4bb37
commit a4e583f1c6
27 changed files with 1931 additions and 79 deletions
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71
etc/libra_api.py Normal file
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2013 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.
# Server Specific Configurations
server = {
'port': '8080',
'host': '0.0.0.0'
}
# Pecan Application Configurations
app = {
'root': 'libra.api.controllers.root.RootController',
'modules': ['libra.api'],
'static_root': '%(confdir)s/public',
'template_path': '%(confdir)s/api/templates',
'debug': True,
'errors': {
404: '/error/404',
'__force_dict__': True
}
}
logging = {
'loggers': {
'root': {'level': 'INFO', 'handlers': ['console']},
'api': {'level': 'DEBUG', 'handlers': ['console']}
},
'handlers': {
'console': {
'level': 'DEBUG',
'class': 'logging.StreamHandler',
'formatter': 'simple'
}
},
'formatters': {
'simple': {
'format': ('%(asctime)s %(levelname)-5.5s [%(name)s]'
'[%(threadName)s] %(message)s')
}
}
}
database = {
'username': 'root',
'password': 'testaburger',
'host': 'localhost',
'schema': 'lbaas'
}
gearman = {
'server': ['localhost:4730'],
}
# Custom Configurations must be in Python dictionary format::
#
# foo = {'bar':'baz'}
#
# All configurations are accessible at::
# pecan.conf

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libra/api/app.py Normal file
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# Copyright 2013 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.
from pecan import make_app
from libra.api import model
def setup_app(config):
model.init_model()
return make_app(
config.app.root,
static_root=config.app.static_root,
template_path=config.app.template_path,
logging=getattr(config, 'logging', {}),
debug=getattr(config.app, 'debug', False),
force_canonical=getattr(config.app, 'force_canonical', True),
guess_content_type_from_ext=getattr(
config.app,
'guess_content_type_from_ext',
True),
)

13
libra/api/controllers/__init__.py Normal file
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# Copyright 2013 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.

66
libra/api/controllers/connection_throttle.py Normal file
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2013 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.
from pecan import expose, response
from pecan.rest import RestController
from libra.api.model.responses import Responses
class ConnectionThrottleController(RestController):
"""functions for /loadbalancers/{loadBalancerId}/connectionthrottle/*
routing"""
@expose('json')
def get(self, load_balancer_id):
"""List connection throttling configuration.
:param load_balancer_id: id of lb
Url:
GET /loadbalancers/{load_balancer_id}/connectionthrottle
Returns: dict
"""
response.status = 201
return Responses.LoadBalancers.ConnectionThrottle.get
@expose('json')
def post(self, load_balancer_id, *args):
"""Update throttling configuration.
:param load_balancer_id: id of lb
:param *args: holds the posted json or xml
Url:
PUT /loadbalancers/loadBalancerId/connectionthrottle
Returns: dict
"""
response.status = 201
return Responses.LoadBalancers.ConnectionThrottle.get
@expose()
def delete(self, loadbalancer_id):
"""Remove connection throttling configurations.
:param load_balancer_id: id of lb
Url:
DELETE /loadbalancers/loadBalancerId/connectionthrottle
Returns: void
"""
response.status = 201

65
libra/api/controllers/health_monitor.py Normal file
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2013 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.
from pecan import expose, response
from pecan.rest import RestController
from libra.api.model.responses import Responses
class HealthMonitorController(RestController):
"""functions for /loadbalancers/{loadBalancerId}/healthmonitor/* routing"""
@expose('json')
def get(self, load_balancer_id):
"""Retrieve the health monitor configuration, if one exists.
:param load_balancer_id: id of lb
Url:
GET /loadbalancers/{load_balancer_id}/healthmonitor
Returns: dict
"""
response.status = 201
return Responses.LoadBalancers.get
@expose('json')
def post(self, load_balancer_id, *args):
"""Update the settings for a health monitor.
:param load_balancer_id: id of lb
:param *args: holds the posted json or xml data
Url:
PUT /loadbalancers/{load_balancer_id}/healthmonitor
Returns: dict
"""
response.status = 201
return Responses.LoadBalancers.get
@expose()
def delete(self, load_balancer_id):
"""Remove the health monitor.
:param load_balancer_id: id of lb
Url:
DELETE /loadbalancers/{load_balancer_id}/healthmonitor
Returns: void
"""
response.status = 201

313
libra/api/controllers/load_balancers.py Normal file
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2013 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 gearman.errors
import json
#import socket
#import time
# pecan imports
from pecan import expose, abort, response
from pecan.rest import RestController
# other controllers
from nodes import NodesController
from health_monitor import HealthMonitorController
from session_persistence import SessionPersistenceController
from connection_throttle import ConnectionThrottleController
#from sqlalchemy.orm import aliased
# default response objects
from libra.api.model.responses import Responses
# models
from libra.api.model.lbaas import LoadBalancer, Device, Node, session
from libra.api.library.gearman_client import gearman_client
class LoadBalancersController(RestController):
"""functions for /loadbalancer routing"""
loadbalancer_status = (
'ACTIVE',
'BUILD',
'PENDING_UPDATE',
'PENDING_DELETE',
'DELETED',
'SUSPENDED',
'ERROR'
)
"""nodes subclass linking
controller class for urls that look like
/loadbalancers/{loadBalancerId}/nodes/*
"""
nodes = NodesController()
"""healthmonitor instance
controller class for urls that start with
/loadbalancers/{loadBalancerId}/healthmonitor/*
"""
healthmonitor = HealthMonitorController()
"""healthmonitor instance
controller class for urls that start with
/loadbalancers/{loadBalancerId}/sessionpersistence/*
"""
sessionpersistence = SessionPersistenceController()
"""connectionthrottle instance
controller class for urls that start with
/loadbalancers/{loadBalancerId}/connectionthrottle/*
"""
connectionthrottle = ConnectionThrottleController()
@expose('json')
def get(self, load_balancer_id=None):
"""Fetches a list of load balancers or the details of one balancer if
load_balancer_id is not empty.
:param load_balancer_id: id of lb we want to get, if none it returns a
list of all
Url:
GET /loadbalancers
List all load balancers configured for the account.
Url:
GET /loadbalancers/{load_balancer_id}
List details of the specified load balancer.
Returns: dict
"""
# have not implimented the keystone middleware so we don't know the
# tenantid
tenant_id = 80074562416143
# if we don't have an id then we want a list of them own by this tenent
if not load_balancer_id:
#return Responses.LoadBalancers.get
load_balancers = {'loadBalancers': session.query(
LoadBalancer.name, LoadBalancer.id, LoadBalancer.protocol,
LoadBalancer.port, LoadBalancer.algorithm,
LoadBalancer.status, LoadBalancer.created,
LoadBalancer.updated
).filter_by(tenantid=tenant_id).all()}
else:
#return Responses.LoadBalancers.detail
load_balancers = session.query(
LoadBalancer.name, LoadBalancer.id, LoadBalancer.protocol,
LoadBalancer.port, LoadBalancer.algorithm,
LoadBalancer.status, LoadBalancer.created,
LoadBalancer.updated
).join(LoadBalancer.devices).\
filter(LoadBalancer.tenantid == tenant_id).\
filter(LoadBalancer.id == load_balancer_id).\
first()._asdict()
virtualIps = session.query(
Device.id, Device.floatingIpAddr
).join(LoadBalancer.devices).\
filter(LoadBalancer.tenantid == tenant_id).\
filter(LoadBalancer.id == load_balancer_id).\
all()
load_balancers['virtualIps'] = []
for item in virtualIps:
vip = item._asdict()
vip['type'] = 'PUBLIC'
vip['ipVersion'] = 'IPV4'
load_balancers['virtualIps'].append(vip)
nodes = session.query(
Node.id, Node.address, Node.port, Node.status, Node.enabled
).join(LoadBalancer.nodes).\
filter(LoadBalancer.tenantid == tenant_id).\
filter(LoadBalancer.id == load_balancer_id).\
all()
load_balancers['nodes'] = []
for item in nodes:
node = item._asdict()
if node['enabled'] == 1:
node['condition'] = 'ENABLED'
else:
node['condition'] = 'DISABLED'
del node['enabled']
load_balancers['nodes'].append(node)
if load_balancers is None:
return Responses.not_found
else:
return load_balancers
@expose('json')
def post(self, load_balancer_id=None, **kwargs):
"""Accepts edit if load_balancer_id isn't blank or create load balancer
posts.
:param load_balancer_id: id of lb
:param *args: holds the posted json or xml data
Urls:
POST /loadbalancers/{load_balancer_id}
PUT /loadbalancers
Notes:
curl -i -H "Accept: application/json" -X POST \
-d "data={"name": "my_lb"}" \
http://dev.server:8080/loadbalancers/100
Returns: dict
"""
# have not implimented the keystone middleware so we don't know the
# tenantid
tenant_id = 80074562416143
# load input
data = json.loads(kwargs['data'])
# TODO validate input data
# if we don't have an id then we want to create a new lb
if not load_balancer_id:
lb = LoadBalancer()
# find free device
device = Device.find_free_device()
if device is None:
response.status = 503
return Responses.service_unavailable
lb.device = device.id
lb.tenantid = tenant_id
lb.update_from_json(data)
# write to database
session.add(lb)
session.flush()
#refresh the lb record so we get the id back
session.refresh(lb)
# now save the loadbalancer_id to the device and switch its status
# to online
device.loadbalancers = lb.id
device.status = "ONLINE"
else:
# grab the lb
lb = session.query(LoadBalancer)\
.filter_by(id=load_balancer_id).first()
if lb is None:
response.status = 400
return Responses.not_found
lb.update_from_json(data)
try:
session.flush()
# trigger gearman client to create new lb
result = gearman_client.submit_job('UPDATE', lb.output_to_json())
# do something with result
if result:
pass
response.status = 200
return self.get()
except:
response.status = 503
return Responses.service_unavailable
@expose()
def delete(self, load_balancer_id):
"""Remove a load balancer from the account.
:param load_balancer_id: id of lb
Urls:
DELETE /loadbalancers/{load_balancer_id}
Notes:
curl -i -H "Accept: application/json" -X DELETE
http://dev.server:8080/loadbalancers/1
Returns: None
"""
# grab the lb
lb = session.query(LoadBalancer)\
.filter_by(id=load_balancer_id).first()
if lb is None:
response.status = 400
return Responses.not_found
try:
session.flush()
# trigger gearman client to create new lb
result = gearman_client.submit_job('DELETE', lb.output_to_json())
if result:
pass
response.status = 200
session.delete(lb)
session.commit()
return self.get()
except:
response.status = 503
return Responses.service_unavailable
def virtualips(self, load_balancer_id):
"""Returns a list of virtual ips attached to a specific Load Balancer.
:param load_balancer_id: id of lb
Url:
GET /loadbalancers/{load_balancer_id}/virtualips
Returns: dict
"""
return Responses.LoadBalancers.virtualips
def usage(self, load_balancer_id):
"""List current and historical usage.
:param load_balancer_id: id of lb
Url:
GET /loadbalancers/{load_balancer_id}/usage
Returns: dict
"""
response.status = 201
return Responses.LoadBalancers.usage
@expose('json')
def _lookup(self, primary_key, *remainder):
"""Routes more complex url mapping.
:param primary_key: value to look up or pass
:param *remainder: remaining args
Raises: 404
"""
#student = get_student_by_primary_key(primary_key)
#if student:
# return StudentController(student), remainder
#else:
abort(404)

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libra/api/controllers/nodes.py Normal file
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2013 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.
from pecan import expose, response
from pecan.rest import RestController
#default response objects
#from libra.api.model.lbaas import Device, LoadBalancer, Node, session
from libra.api.model.responses import Responses
class NodesController(RestController):
"""Functions for /loadbalancers/{load_balancer_id}/nodes/* routing"""
@expose('json')
def get(self, load_balancer_id, node_id=None):
"""List node(s) configured for the load balancer OR if
node_id == None .. Retrieve the configuration of node {node_id} of
loadbalancer {load_balancer_id}.
:param load_balancer_id: id of lb
:param node_id: id of node (optional)
Urls:
GET /loadbalancers/{load_balancer_id}/nodes
GET /loadbalancers/{load_balancer_id}/nodes/{node_id}
Returns: dict
"""
response.status = 201
return Responses.LoadBalancers.Nodes.get
@expose('json')
def post(self, load_balancer_id, node_id=None, *args):
"""Adds a new node to the load balancer OR Modify the configuration
of a node on the load balancer.
:param load_balancer_id: id of lb
:param node_id: id of node (optional) when missing a new node is added.
:param *args: holds the posted json or xml data
Urls:
POST /loadbalancers/{load_balancer_id}/nodes
PUT /loadbalancers/{load_balancer_id}/nodes/{node_id}
Returns: dict of the full list of nodes or the details of the single
node
"""
response.status = 201
return Responses.LoadBalancers.Nodes.get
@expose()
def delete(self, load_balancer_id, node_id):
"""Remove a node from the load balancer.
:param load_balancer_id: id of lb
:param node_id: id of node
Url:
DELETE /loadbalancers/{load_balancer_id}/nodes/{node_id}
Returns: None
"""
response.status = 201

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libra/api/controllers/root.py Normal file
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2013 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.
from pecan import expose, response
from load_balancers import LoadBalancersController
from libra.api.model.responses import Responses
class RootController(object):
"""root control object."""
@expose('json')
def _default(self):
"""default route.. acts as catch all for any wrong urls.
For now it returns a 404 because no action is defined for /"""
response.status = 201
return Responses._default
@expose('json')
def protocols(self):
"""Lists all supported load balancing protocols.
Url:
GET /protocols
Returns: dict
"""
response.status = 201
return Responses.protocols
@expose('json')
def algorithms(self):
"""List all supported load balancing algorithms.
Url:
GET /algorithms
Returns: dict
"""
response.status = 201
return Responses.algorithms
#pecan uses this controller class for urls that start with /loadbalancers
loadbalancers = LoadBalancersController()

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libra/api/controllers/session_persistence.py Normal file
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2013 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.
from pecan import expose, response
from pecan.rest import RestController
from libra.api.model.responses import Responses
class SessionPersistenceController(RestController):
"""SessionPersistenceController
functions for /loadbalancers/{loadBalancerId}/sessionpersistence/* routing
"""
@expose('json')
def get(self, load_balancer_id):
"""List session persistence configuration.get
:param load_balancer_id: id of lb
Url:
GET /loadbalancers/{load_balancer_id}/sessionpersistence
Returns: dict
"""
response.status = 201
return Responses.LoadBalancers.SessionPersistence.get
@expose('json')
def post(self, load_balancer_id):
"""Enable session persistence.
:param load_balancer_id: id of lb
Url:
PUT /loadbalancers/{load_balancer_id}/sessionpersistence
Returns: dict
"""
response.status = 201
return Responses.LoadBalancers.SessionPersistence.get
@expose('json')
def delete(self, load_balancer_id):
"""Disable session persistence.
:param load_balancer_id: id of lb
Url:
DELETE /loadbalancers/{load_balancer_id}/sessionpersistence
Returns: dict
"""
response.status = 201

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libra/api/library/__init__.py Normal file
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libra/api/library/gearman_client.py Normal file
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# Copyright 2013 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.
from libra.common.json_gearman import JSONGearmanClient
from pecan import conf
gearman_client = JSONGearmanClient(conf.gearman.server)
gearman_workers = [
'UPDATE', # Create/Update a Load Balancer.
'SUSPEND', # Suspend a Load Balancer.
'ENABLE', # Enable a suspended Load Balancer.
'DELETE', # Delete a Load Balancer.
'DISCOVER', # Return service discovery information.
'ARCHIVE', # Archive LB log files.
'STATS' # Get load balancer statistics.
]

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libra/api/main.py
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# Copyright 2013 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 daemon
import daemon.pidfile
import daemon.runner
import grp
import lockfile
import os
import pwd
from libra.common.options import Options, setup_logging
class APIServer(object):
def __init__(self, logger, args):
self.logger = logger
self.args = args
def main():
options = Options('api', 'API Daemon')
args = options.run()
logger = setup_logging('api_server', args)
server = APIServer(logger, args)
if args.nodaemon:
server.main()
else:
pidfile = daemon.pidfile.TimeoutPIDLockFile(args.pid, 10)
if daemon.runner.is_pidfile_stale(pidfile):
logger.warning("Cleaning up stale PID file")
pidfile.break_lock()
context = daemon.DaemonContext(
working_directory='/etc/libra',
umask=0o022,
pidfile=pidfile,
files_preserve=[logger.handlers[0].stream]
)
if args.user:
try:
context.uid = pwd.getpwnam(args.user).pw_uid
except KeyError:
logger.critical("Invalid user: %s" % args.user)
return 1
# NOTE(LinuxJedi): we are switching user so need to switch
# the ownership of the log file for rotation
os.chown(logger.handlers[0].baseFilename, context.uid, -1)
if args.group:
try:
context.gid = grp.getgrnam(args.group).gr_gid
except KeyError:
logger.critical("Invalid group: %s" % args.group)
return 1
try:
context.open()
except lockfile.LockTimeout:
logger.critical(
"Failed to lock pidfile %s, another instance running?",
args.pid
)
return 1
server.main()
return 0

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libra/api/model/__init__.py Normal file
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# Copyright 2013 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.
def init_model():
"""
This is a stub method which is called at application startup time.
If you need to bind to a parse database configuration, set up tables or
ORM classes, or perform any database initialization, this is the
recommended place to do it.
For more information working with databases, and some common recipes,
see http://pecan.readthedocs.org/en/latest/databases.html
"""
pass

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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2013 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.
from sqlalchemy import Table, Column, Integer, ForeignKey, create_engine
from sqlalchemy import INTEGER, VARCHAR, TIMESTAMP, BIGINT
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import relationship, backref, sessionmaker
from pecan import conf
# TODO replace this with something better
conn_string = '''mysql://%s:%s@%s/%s''' % (
conf.database.username,
conf.database.password,
conf.database.host,
conf.database.schema
)
engine = create_engine(conn_string)
DeclarativeBase = declarative_base()
metadata = DeclarativeBase.metadata
metadata.bind = engine
loadbalancers_devices = Table(
'loadbalancers_devices',
metadata,
Column('loadbalancer', Integer, ForeignKey('loadbalancers.id')),
Column('device', Integer, ForeignKey('devices.id'))
)
class Device(DeclarativeBase):
"""device model"""
__tablename__ = 'devices'
#column definitions
az = Column(u'az', INTEGER(), nullable=False)
created = Column(u'created', TIMESTAMP(), nullable=False)
floatingIpAddr = Column(
u'floatingIpAddr', VARCHAR(length=128), nullable=False
)
id = Column(u'id', BIGINT(), primary_key=True, nullable=False)
name = Column(u'name', VARCHAR(length=128), nullable=False)
publicIpAddr = Column(u'publicIpAddr', VARCHAR(length=128), nullable=False)
status = Column(u'status', VARCHAR(length=128), nullable=False)
type = Column(u'type', VARCHAR(length=128), nullable=False)
updated = Column(u'updated', TIMESTAMP(), nullable=False)
def find_free_device(self):
"""queries for free and clear device
sql form java api
SELECT * FROM devices WHERE loadbalancers = " + EMPTY_LBIDS + " AND
status = '" + Device.STATUS_OFFLINE + "'" ;
"""
return session.query(Device).\
filter_by(loadbalancers="", status="OFFLINE").\
first()
class LoadBalancer(DeclarativeBase):
"""load balancer model"""
__tablename__ = 'loadbalancers'
#column definitions
algorithm = Column(u'algorithm', VARCHAR(length=80), nullable=False)
created = Column(u'created', TIMESTAMP(), nullable=False)
errmsg = Column(u'errmsg', VARCHAR(length=128))
id = Column(u'id', BIGINT(), primary_key=True, nullable=False)
name = Column(u'name', VARCHAR(length=128), nullable=False)
port = Column(u'port', INTEGER(), nullable=False)
protocol = Column(u'protocol', VARCHAR(length=128), nullable=False)
status = Column(u'status', VARCHAR(length=50), nullable=False)
tenantid = Column(u'tenantid', VARCHAR(length=128), nullable=False)
updated = Column(u'updated', TIMESTAMP(), nullable=False)
nodes = relationship(
'Node', backref=backref('loadbalancers', order_by='Node.id')
)
devices = relationship(
'Device', secondary=loadbalancers_devices, backref='loadbalancers',
lazy='joined'
)
class Node(DeclarativeBase):
"""node model"""
__tablename__ = 'nodes'
#column definitions
address = Column(u'address', VARCHAR(length=128), nullable=False)
enabled = Column(u'enabled', Integer(), nullable=False)
id = Column(u'id', BIGINT(), primary_key=True, nullable=False)
lbid = Column(
u'lbid', BIGINT(), ForeignKey('loadbalancers.id'), nullable=False
)
port = Column(u'port', INTEGER(), nullable=False)
status = Column(u'status', VARCHAR(length=128), nullable=False)
weight = Column(u'weight', INTEGER(), nullable=False)
"""session"""
session = sessionmaker(bind=engine)()

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# LBaaS Database schema
# pemellquist@gmail.com
DROP DATABASE IF EXISTS lbaas;
CREATE DATABASE lbaas;
USE lbaas;
# versions, used to define overall version for schema
# major version differences are not backward compatibile
create TABLE versions (
major INT NOT NULL,
minor INT NOT NULL,
PRIMARY KEY (major)
);
INSERT INTO versions values (2,0);
# loadbalancers
CREATE TABLE loadbalancers (
id BIGINT NOT NULL AUTO_INCREMENT, # unique id for this loadbalancer, generated by DB when record is created
name VARCHAR(128) NOT NULL, # tenant assigned load balancer name
tenantid VARCHAR(128) NOT NULL, # tenant id who owns this loadbalancer
protocol VARCHAR(128) NOT NULL, # loadbalancer protocol used, can be 'HTTP', 'TCP' or 'HTTPS'
port INT NOT NULL, # TCP port number associated with protocol and used by loadbalancer northbound interface
status VARCHAR(50) NOT NULL, # current status, see ATLAS API 1.1 for all possible values
algorithm VARCHAR(80) NOT NULL, # LB Algorithm in use e.g. ROUND_ROBIN, see ATLAS API 1.1 for all possible values
created TIMESTAMP NOT NULL, # timestamp of when LB was created
updated TIMESTAMP NOT NULL, # timestamp of when LB was last updated
device BIGINT NOT NULL, # reference to associated device OR '0' for unassigned
errmsg VARCHAR(128), # optional error message which can describe details regarding LBs state, can be blank if no error state exists
PRIMARY KEY (id) # ids are unique accross all LBs
) DEFAULT CHARSET utf8 DEFAULT COLLATE utf8_general_ci;
#nodes
CREATE TABLE nodes (
id BIGINT NOT NULL AUTO_INCREMENT, # unique id for this node, generated by DB when record is created
lbid BIGINT NOT NULL, # Loadbalancer who owns this node
address VARCHAR(128) NOT NULL, # IPV4 or IPV6 address for this node
port INT NOT NULL, # TCP port number associated with this node and used from LB to node
weight INT NOT NULL, # Node weight if applicable to algorithm used
enabled BOOLEAN NOT NULL, # is node enabled or not
status VARCHAR(128) NOT NULL, # status of node 'OFFLINE', 'ONLINE', 'ERROR', this value is reported by the device
PRIMARY KEY (id) # ids are unique accross all Nodes
) DEFAULT CHARSET utf8 DEFAULT COLLATE utf8_general_ci;
# devices
CREATE TABLE devices (
id BIGINT NOT NULL AUTO_INCREMENT, # unique id for this device, generated by DB when record is created
name VARCHAR(128) NOT NULL, # admin assigned device name, this is the unique gearman worker function name
floatingIpAddr VARCHAR(128) NOT NULL, # IPV4 or IPV6 address of device for floating IP
publicIpAddr VARCHAR(128) NOT NULL, # IPV4 or IPV6 address of device for floating IP
loadbalancers VARCHAR(128) NOT NULL, # Reference to loadbalancers using this device ( JSON array )
az INT NOT NULL, # availability zone in which this device exists
type VARCHAR(128) NOT NULL, # text description of type of device, e.g. 'HAProxy'
created TIMESTAMP NOT NULL, # timestamp of when device was created
updated TIMESTAMP NOT NULL, # timestamp of when device was last updated
status VARCHAR(128) NOT NULL, # status of device 'OFFLINE', 'ONLINE', 'ERROR', this value is reported by the device
PRIMARY KEY (id)
) DEFAULT CHARSET utf8 DEFAULT COLLATE utf8_general_ci;
CREATE TABLE `loadbalancers_devices` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`loadbalancer` int(11) DEFAULT NULL,
`device` int(11) DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=16 DEFAULT CHARSET=latin1

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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2013 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.
"""Class Responses
responder objects for framework.
"""
class Responses(object):
"""404 - not found"""
_default = {'status': '404'}
"""not found """
not_found = {'message': 'Object not Found'}
"""service_unavailable"""
service_unavailable = {'message': 'Service Unavailable'}
"""algorithms response"""
algorithms = {
'algorithms': [
{'name': 'ROUND_ROBIN'},
{'name': 'LEAST_CONNECTIONS'}
]
}
"""protocols response"""
protocols = {
'protocols': [
{
'name': 'HTTP',
'port': '80'
},
{
'name': 'HTTPS',
'port': '443'
},
{
'name': 'TCP',
'port': '*'
}
]
}
"""class LoadBalancers
grouping of lb responses
"""
class LoadBalancers(object):
"""LoadBalancers list"""
get = {
'loadBalancers': [
{
'name': 'lb-site1',
'id': '71',
'protocol': 'HTTP',
'port': '80',
'algorithm': 'LEAST_CONNECTIONS',
'status': 'ACTIVE',
'created': '2010-11-30T03:23:42Z',
'updated': '2010-11-30T03:23:44Z'
},
{
'name': 'lb-site2',
'id': '166',
'protocol': 'TCP',
'port': '9123',
'algorithm': 'ROUND_ROBIN',
'status': 'ACTIVE',
'created': '2010-11-30T03:23:42Z',
'updated': '2010-11-30T03:23:44Z'
}
]
}
"""loadbalancer details"""
detail = {
'id': '2000',
'name': 'sample-loadbalancer',
'protocol': 'HTTP',
'port': '80',
'algorithm': 'ROUND_ROBIN',
'status': 'ACTIVE',
'created': '2010-11-30T03:23:42Z',
'updated': '2010-11-30T03:23:44Z',
'virtualIps': [
{
'id': '1000',
'address': '2001:cdba:0000:0000:0000:0000:3257:9652',
'type': 'PUBLIC',
'ipVersion': 'IPV6'
}
],
'nodes': [
{
'id': '1041',
'address': '10.1.1.1',
'port': '80',
'condition': 'ENABLED',
'status': 'ONLINE'
},
{
'id': '1411',
'address': '10.1.1.2',
'port': '80',
'condition': 'ENABLED',
'status': 'ONLINE'
}
],
'sessionPersistence': {
'persistenceType': 'HTTP_COOKIE'
},
'connectionThrottle': {
'maxRequestRate': '50',
'rateInterval': '60'
}
}
"""create loadbalancer response"""
post = {
'name': 'a-new-loadbalancer',
'id': '144',
'protocol': 'HTTP',
'port': '83',
'algorithm': 'ROUND_ROBIN',
'status': 'BUILD',
'created': '2011-04-13T14:18:07Z',
'updated': '2011-04-13T14:18:07Z',
'virtualIps': [
{
'address': '3ffe:1900:4545:3:200:f8ff:fe21:67cf',
'id': '39',
'type': 'PUBLIC',
'ipVersion': 'IPV6'
}
],
'nodes': [
{
'address': '10.1.1.1',
'id': '653',
'port': '80',
'status': 'ONLINE',
'condition': 'ENABLED'
}
]
}
"""virtualips"""
virtualips = {
'virtualIps': [
{
'id': '1021',
'address': '206.10.10.210',
'type': 'PUBLIC',
'ipVersion': 'IPV4'
}
]
}
"""usage"""
usage = {
'loadBalancerUsageRecords': [
{
'id': '394',
'transferBytesIn': '2819204',
'transferBytesOut': '84923069'
},
{
'id': '473',
'transferBytesIn': '0',
'transferBytesOut': '0'
}
]
}
"""class HealthMonitor
monitor responses
"""
class HealthMonitor(object):
"""monitor CONNECT response"""
get = {
'type': 'CONNECT',
'delay': '20',
'timeout': '10',
'attemptsBeforeDeactivation': '3'
}
"""monitor HTTPS response"""
get_https = {
'type': 'HTTPS',
'delay': '10',
'timeout': '3',
'attemptsBeforeDeactivation': '3',
'path': '/healthcheck'
}
"""class SessionPersistence
for managing Session Persistance
"""
class SessionPersistence(object):
"""get"""
get = {
'persistenceType': 'HTTP_COOKIE'
}
"""class Connections
Throttle Connections responses
"""
class ConnectionThrottle(object):
"""get"""
get = {
'maxRequestRate': '50',
'rateInterval': '60'
}
"""class Nodes
grouping of node related responses
"""
class Nodes(object):
"""list of nodes of a specific lb"""
get = {
'nodes': [
{
'id': '410',
'address': '10.1.1.1',
'port': '80',
'condition': 'ENABLED',
'status': 'ONLINE'
},
{
'id': '236',
'address': '10.1.1.2',
'port': '80',
'condition': 'ENABLED',
'status': 'ONLINE'
},
{
'id': '2815',
'address': '10.1.1.3',
'port': '83',
'condition': 'DISABLED',
'status': 'OFFLINE'
},
]
}
"""a specific node details"""
get_detail = {
'id': '236',
'address': '10.1.1.2',
'port': '80',
'condition': 'ENABLED',
'status': 'ONLINE'
}
"""nodes create response"""
post = {
'nodes': [
{
'id': '7298',
'address': '10.1.1.1',
'port': '80',
'condition': 'ENABLED',
'status': 'ONLINE'
},
{
'id': '293',
'address': '10.2.2.1',
'port': '80',
'weight': '2',
'condition': 'ENABLED',
'status': 'OFFLINE'
},
{
'id': '183',
'address': '10.2.2.4',
'port': '88',
'weight': '2',
'condition': 'DISABLED',
'status': 'OFFLINE'
}
]
}

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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2013 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.
class Validation(object):
"""class Validatoin
Validation templates for validict lib
"""
"""loadbalancer_create"""
loadbalancer_create = {
"name": "a-new-loadbalancer",
"nodes": [
{
"address": "10.1.1.1",
"port": "80"
},
{
"address": "10.1.1.2",
"port": "81"
}
]
}
"""nodes_create"""
nodes_create = {
"nodes": [
{
"address": "10.1.1.1",
"port": "80"
},
{
"address": "10.2.2.1",
"port": "80",
"weight": "2"
},
{
"address": "10.2.2.2",
"port": "88",
"condition": "DISABLED",
"weight": "2"
}
]
}
"""monitor CONNECT request"""
monitor_connect = {
"type": "CONNECT",
"delay": "20",
"timeout": "10",
"attemptsBeforeDeactivation": "3"
}

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<%inherit file="layout.html" />
## provide definitions for blocks we want to redefine
<%def name="title()">
Server Error ${status}
</%def>
## now define the body of the template
<header>
<h1>Server Error ${status}</h1>
</header>
<p>${message}</p>

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# Copyright 2013 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 os
from unittest import TestCase
from pecan import set_config
from pecan.testing import load_test_app
__all__ = ['FunctionalTest']
class FunctionalTest(TestCase):
"""
Used for functional tests where you need to test your
literal application and its integration with the framework.
"""
def setUp(self):
self.app = load_test_app(os.path.join(
os.path.dirname(__file__),
'config.py'
))
def tearDown(self):
set_config({}, overwrite=True)

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# Copyright 2013 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.
# Server Specific Configurations
server = {
'port': '8080',
'host': '0.0.0.0'
}
# Pecan Application Configurations
app = {
'root': 'libra.api.controllers.root.RootController',
'modules': ['libra.api'],
'static_root': '%(confdir)s/../../public',
'template_path': '%(confdir)s/../templates',
'debug': True,
'errors': {
'404': '/error/404',
'__force_dict__': True
}
}
database = {
'username':'root',
'password':'',
'host':'127.0.0.1',
'schema':'lbaas'
}
gearman = {
'server':['localhost:4730'],
}
# Custom Configurations must be in Python dictionary format::
#
# foo = {'bar':'baz'}
#
# All configurations are accessible at::
# pecan.conf

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# Copyright 2013 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.
#from unittest import TestCase
#from webtest import TestApp
from libra.api.tests import FunctionalTest
class TestRootController(FunctionalTest):
def test_get(self):
response = self.app.get('/')
assert response.status_int == 201
def test_search(self):
response = self.app.post('/', params={'q': 'RestController'})
assert response.status_int == 201
# assert response.headers['Location'] == (
# 'http://pecan.readthedocs.org/en/latest/search.html'
# '?q=RestController'
# )
def test_get_not_found(self):
response = self.app.get('/a/bogus/url', expect_errors=True)
# assert response.status_int == 400

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# Copyright 2013 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.
from unittest import TestCase
class TestUnits(TestCase):
def test_units(self):
assert 5 * 5 == 25

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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2010 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# Copyright 2011 Justin Santa Barbara
# 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.
'''
JSON related utilities.
This module provides a few things:
1) A handy function for getting an object down to something that can be
JSON serialized. See to_primitive().
2) Wrappers around loads() and dumps(). The dumps() wrapper will
automatically use to_primitive() for you if needed.
3) This sets up anyjson to use the loads() and dumps() wrappers if anyjson
is available.
'''
import datetime
import functools
import inspect
import itertools
import json
import types
import xmlrpclib
from libra.openstack.common import timeutils
_nasty_type_tests = [inspect.ismodule, inspect.isclass, inspect.ismethod,
inspect.isfunction, inspect.isgeneratorfunction,
inspect.isgenerator, inspect.istraceback, inspect.isframe,
inspect.iscode, inspect.isbuiltin, inspect.isroutine,
inspect.isabstract]
_simple_types = (types.NoneType, int, basestring, bool, float, long)
def to_primitive(value, convert_instances=False, convert_datetime=True,
level=0, max_depth=3):
"""Convert a complex object into primitives.
Handy for JSON serialization. We can optionally handle instances,
but since this is a recursive function, we could have cyclical
data structures.
To handle cyclical data structures we could track the actual objects
visited in a set, but not all objects are hashable. Instead we just
track the depth of the object inspections and don't go too deep.
Therefore, convert_instances=True is lossy ... be aware.
"""
# handle obvious types first - order of basic types determined by running
# full tests on nova project, resulting in the following counts:
# 572754 <type 'NoneType'>
# 460353 <type 'int'>
# 379632 <type 'unicode'>
# 274610 <type 'str'>
# 199918 <type 'dict'>
# 114200 <type 'datetime.datetime'>
# 51817 <type 'bool'>
# 26164 <type 'list'>
# 6491 <type 'float'>
# 283 <type 'tuple'>
# 19 <type 'long'>
if isinstance(value, _simple_types):
return value
if isinstance(value, datetime.datetime):
if convert_datetime:
return timeutils.strtime(value)
else:
return value
# value of itertools.count doesn't get caught by nasty_type_tests
# and results in infinite loop when list(value) is called.
if type(value) == itertools.count:
return unicode(value)
# FIXME(vish): Workaround for LP bug 852095. Without this workaround,
# tests that raise an exception in a mocked method that
# has a @wrap_exception with a notifier will fail. If
# we up the dependency to 0.5.4 (when it is released) we
# can remove this workaround.
if getattr(value, '__module__', None) == 'mox':
return 'mock'
if level > max_depth:
return '?'
# The try block may not be necessary after the class check above,
# but just in case ...
try:
recursive = functools.partial(to_primitive,
convert_instances=convert_instances,
convert_datetime=convert_datetime,
level=level,
max_depth=max_depth)
if isinstance(value, dict):
return dict((k, recursive(v)) for k, v in value.iteritems())
elif isinstance(value, (list, tuple)):
return [recursive(lv) for lv in value]
# It's not clear why xmlrpclib created their own DateTime type, but
# for our purposes, make it a datetime type which is explicitly
# handled
if isinstance(value, xmlrpclib.DateTime):
value = datetime.datetime(*tuple(value.timetuple())[:6])
if convert_datetime and isinstance(value, datetime.datetime):
return timeutils.strtime(value)
elif hasattr(value, 'iteritems'):
return recursive(dict(value.iteritems()), level=level + 1)
elif hasattr(value, '__iter__'):
return recursive(list(value))
elif convert_instances and hasattr(value, '__dict__'):
# Likely an instance of something. Watch for cycles.
# Ignore class member vars.
return recursive(value.__dict__, level=level + 1)
else:
if any(test(value) for test in _nasty_type_tests):
return unicode(value)
return value
except TypeError:
# Class objects are tricky since they may define something like
# __iter__ defined but it isn't callable as list().
return unicode(value)
def dumps(value, default=to_primitive, **kwargs):
return json.dumps(value, default=default, **kwargs)
def loads(s):
return json.loads(s)
def load(s):
return json.load(s)
try:
import anyjson
except ImportError:
pass
else:
anyjson._modules.append((__name__, 'dumps', TypeError,
'loads', ValueError, 'load'))
anyjson.force_implementation(__name__)

186
libra/openstack/common/timeutils.py Normal file
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@ -0,0 +1,186 @@
# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2011 OpenStack Foundation.
# 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.
"""
Time related utilities and helper functions.
"""
import calendar
import datetime
import iso8601
# ISO 8601 extended time format with microseconds
_ISO8601_TIME_FORMAT_SUBSECOND = '%Y-%m-%dT%H:%M:%S.%f'
_ISO8601_TIME_FORMAT = '%Y-%m-%dT%H:%M:%S'
PERFECT_TIME_FORMAT = _ISO8601_TIME_FORMAT_SUBSECOND
def isotime(at=None, subsecond=False):
"""Stringify time in ISO 8601 format"""
if not at:
at = utcnow()
st = at.strftime(_ISO8601_TIME_FORMAT
if not subsecond
else _ISO8601_TIME_FORMAT_SUBSECOND)
tz = at.tzinfo.tzname(None) if at.tzinfo else 'UTC'
st += ('Z' if tz == 'UTC' else tz)
return st
def parse_isotime(timestr):
"""Parse time from ISO 8601 format"""
try:
return iso8601.parse_date(timestr)
except iso8601.ParseError as e:
raise ValueError(e.message)
except TypeError as e:
raise ValueError(e.message)
def strtime(at=None, fmt=PERFECT_TIME_FORMAT):
"""Returns formatted utcnow."""
if not at:
at = utcnow()
return at.strftime(fmt)
def parse_strtime(timestr, fmt=PERFECT_TIME_FORMAT):
"""Turn a formatted time back into a datetime."""
return datetime.datetime.strptime(timestr, fmt)
def normalize_time(timestamp):
"""Normalize time in arbitrary timezone to UTC naive object"""
offset = timestamp.utcoffset()
if offset is None:
return timestamp
return timestamp.replace(tzinfo=None) - offset
def is_older_than(before, seconds):
"""Return True if before is older than seconds."""
if isinstance(before, basestring):
before = parse_strtime(before).replace(tzinfo=None)
return utcnow() - before > datetime.timedelta(seconds=seconds)
def is_newer_than(after, seconds):
"""Return True if after is newer than seconds."""
if isinstance(after, basestring):
after = parse_strtime(after).replace(tzinfo=None)
return after - utcnow() > datetime.timedelta(seconds=seconds)
def utcnow_ts():
"""Timestamp version of our utcnow function."""
return calendar.timegm(utcnow().timetuple())
def utcnow():
"""Overridable version of utils.utcnow."""
if utcnow.override_time:
try:
return utcnow.override_time.pop(0)
except AttributeError:
return utcnow.override_time
return datetime.datetime.utcnow()
def iso8601_from_timestamp(timestamp):
"""Returns a iso8601 formated date from timestamp"""
return isotime(datetime.datetime.utcfromtimestamp(timestamp))
utcnow.override_time = None
def set_time_override(override_time=datetime.datetime.utcnow()):
"""
Override utils.utcnow to return a constant time or a list thereof,
one at a time.
"""
utcnow.override_time = override_time
def advance_time_delta(timedelta):
"""Advance overridden time using a datetime.timedelta."""
assert(not utcnow.override_time is None)
try:
for dt in utcnow.override_time:
dt += timedelta
except TypeError:
utcnow.override_time += timedelta
def advance_time_seconds(seconds):
"""Advance overridden time by seconds."""
advance_time_delta(datetime.timedelta(0, seconds))
def clear_time_override():
"""Remove the overridden time."""
utcnow.override_time = None
def marshall_now(now=None):
"""Make an rpc-safe datetime with microseconds.
Note: tzinfo is stripped, but not required for relative times."""
if not now:
now = utcnow()
return dict(day=now.day, month=now.month, year=now.year, hour=now.hour,
minute=now.minute, second=now.second,
microsecond=now.microsecond)
def unmarshall_time(tyme):
"""Unmarshall a datetime dict."""
return datetime.datetime(day=tyme['day'],
month=tyme['month'],
year=tyme['year'],
hour=tyme['hour'],
minute=tyme['minute'],
second=tyme['second'],
microsecond=tyme['microsecond'])
def delta_seconds(before, after):
"""
Compute the difference in seconds between two date, time, or
datetime objects (as a float, to microsecond resolution).
"""
delta = after - before
try:
return delta.total_seconds()
except AttributeError:
return ((delta.days * 24 * 3600) + delta.seconds +
float(delta.microseconds) / (10 ** 6))
def is_soon(dt, window):
"""
Determines if time is going to happen in the next window seconds.
:params dt: the time
:params window: minimum seconds to remain to consider the time not soon
:return: True if expiration is within the given duration
"""
soon = (utcnow() + datetime.timedelta(seconds=window))
return normalize_time(dt) <= soon

74
libra/openstack/common/xmlutils.py Normal file
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@ -0,0 +1,74 @@
# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2013 IBM Corp.
#
# 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.
from xml.dom import minidom
from xml.parsers import expat
from xml import sax
from xml.sax import expatreader
class ProtectedExpatParser(expatreader.ExpatParser):
"""An expat parser which disables DTD's and entities by default."""
def __init__(self, forbid_dtd=True, forbid_entities=True,
*args, **kwargs):
# Python 2.x old style class
expatreader.ExpatParser.__init__(self, *args, **kwargs)
self.forbid_dtd = forbid_dtd
self.forbid_entities = forbid_entities
def start_doctype_decl(self, name, sysid, pubid, has_internal_subset):
raise ValueError("Inline DTD forbidden")
def entity_decl(self, entityName, is_parameter_entity, value, base,
systemId, publicId, notationName):
raise ValueError("<!ENTITY> entity declaration forbidden")
def unparsed_entity_decl(self, name, base, sysid, pubid, notation_name):
# expat 1.2
raise ValueError("<!ENTITY> unparsed entity forbidden")
def external_entity_ref(self, context, base, systemId, publicId):
raise ValueError("<!ENTITY> external entity forbidden")
def notation_decl(self, name, base, sysid, pubid):
raise ValueError("<!ENTITY> notation forbidden")
def reset(self):
expatreader.ExpatParser.reset(self)
if self.forbid_dtd:
self._parser.StartDoctypeDeclHandler = self.start_doctype_decl
self._parser.EndDoctypeDeclHandler = None
if self.forbid_entities:
self._parser.EntityDeclHandler = self.entity_decl
self._parser.UnparsedEntityDeclHandler = self.unparsed_entity_decl
self._parser.ExternalEntityRefHandler = self.external_entity_ref
self._parser.NotationDeclHandler = self.notation_decl
try:
self._parser.SkippedEntityHandler = None
except AttributeError:
# some pyexpat versions do not support SkippedEntity
pass
def safe_minidom_parse_string(xml_string):
"""Parse an XML string using minidom safely.
"""
try:
return minidom.parseString(xml_string, parser=ProtectedExpatParser())
except sax.SAXParseException:
raise expat.ExpatError()

2
openstack-common.conf
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@ -1,7 +1,7 @@
[DEFAULT] [DEFAULT]
# The list of modules to copy from openstack-common # The list of modules to copy from openstack-common
modules=importutils modules=importutils,jsonutils,xmlutils
# The base module to hold the copy of openstack.common # The base module to hold the copy of openstack.common
base=libra base=libra

3
requirements.txt
View File

@ -6,3 +6,6 @@ python_novaclient>=2.11.1
python_swiftclient>=1.3.0 python_swiftclient>=1.3.0
requests>=1.0.0 requests>=1.0.0
dogapi dogapi
pecan
sqlalchemy
MySQL-python