def network_delete(network):
"""Delete network.
If the network does not exist, a NotFoundError will be raised.
"""
db = model.Session()
network = _must_find(db, model.Network, network)
if cfg.getboolean('recursive', 'rHaaS'):
bHaaS_out = check_output(['haas','network_delete',
network.label+'_'+network.creator.label],
stderr=STDOUT,
shell=False)
error_checker(bHaaS_out)
else:
if network.nics:
raise BlockedError("Network still connected to nodes")
if network.hnics:
raise BlockedError("Network still connected to headnodes")
if network.scheduled_nics:
raise BlockedError("Network scheduled to become connected to nodes.")
if network.allocated:
driver_name = cfg.get('general', 'driver')
driver = importlib.import_module('haas.drivers.' + driver_name)
driver.free_network_id(db, network.network_id)
db.delete(network)
if cfg.getboolean('recursive', 'rHaaS'):
b_project = cfg.get('recursive', 'project')
network_name = network.label + b_project
cli.network_delete(network_name)
db.commit()
def headnode_create(headnode, project, base_img):
"""Create headnode.
If a node with the same name already exists, a DuplicateError will be
raised.
If the project already has a headnode, a DuplicateError will be raised.
If the project does not exist, a NotFoundError will be raised.
"""
if not cfg.getboolean('recursive', 'rHaaS'):
valid_imgs = cfg.get('headnode', 'base_imgs')
valid_imgs = [img.strip() for img in valid_imgs.split(',')]
if base_img not in valid_imgs:
raise BadArgumentError('Provided image is not a valid image.')
# first check the local database to make sure the headnode doesn't already exist
# and the project is valid
db = model.Session()
_assert_absent(db, model.Headnode, headnode)
project = _must_find(db, model.Project, project)
#check for recursive HaaS instance, pass down to base HaaS and check for success/failure
if cfg.getboolean('recursive', 'rHaaS'):
b_project = cfg.get('recursive', 'project')
bHaaS_out = check_output([
'haas', 'headnode_create', headnode + '_' + project.label,
b_project, base_img
],
stderr=STDOUT,
shell=False)
error_checker(bHaaS_out)
#else if not recursive, do anything that should only happen @ bHaaS
else:
valid_imgs = cfg.get('headnode', 'base_imgs')
valid_imgs = [img.strip() for img in valid_imgs.split(',')]
if base_img not in valid_imgs:
raise BadArgumentError('Provided image is not a valid image.')
headnode = model.Headnode(project, headnode, base_img)
db.add(headnode)
db.commit()
def headnode_create_hnic(headnode, hnic):
"""Create hnic attached to given headnode.
If the node does not exist, a NotFoundError will be raised.
If there is already an hnic with that name, a DuplicateError will
be raised.
"""
db = model.Session()
headnode = _must_find(db, model.Headnode, headnode)
_assert_absent_n(db, headnode, model.Hnic, hnic)
if not headnode.dirty:
raise IllegalStateError
hnic = model.Hnic(headnode, hnic)
db.add(hnic)
if cfg.getboolean('recursive', 'rHaaS'):
project = headnode.project.label
bHaaS_out = check_output([
'haas', 'headnode_create_hnic', headnode.label + '_' + project,
hnic.label + '_' + project
],
stderr=STDOUT,
shell=False)
error_checker(bHaaS_out)
db.commit()
def node_detach_network(node, nic):
"""Detach a physical nic from any network it's on.
Raises ProjectMismatchError if the node is not in a project.
"""
db = model.Session()
node = _must_find(db, model.Node, node)
nic = _must_find_n(db, node, model.Nic, nic)
if not node.project:
raise ProjectMismatchError("Node not in project")
if nic.current_action:
raise BlockedError(
"A networking operation is already active on the nic.")
if cfg.getboolean('recursive', 'rHaaS'):
bHaaS_out = check_output(
['haas', 'node_detach_network', node.label, nic.label],
stderr=STDOUT,
shell=False)
error_checker(bHaaS_out)
db.add(model.NetworkingAction(nic, None))
db.commit()
def headnode_delete_hnic(headnode, hnic):
"""Delete hnic on a given headnode.
If the hnic does not exist, a NotFoundError will be raised.
"""
db = model.Session()
headnode = _must_find(db, model.Headnode, headnode)
hnic = _must_find_n(db, headnode, model.Hnic, hnic)
if not headnode.dirty:
raise IllegalStateError
if not hnic:
raise NotFoundError("Hnic: " + hnic.label)
if cfg.getboolean('recursive', 'rHaaS'):
project = headnode.project.label
bHaaS_out = check_output([
'haas', 'headnode_delete_hnic', headnode.label + '_' + project,
hnic.label + '_' + project
],
stderr=STDOUT,
shell=False)
error_checker(bHaaS_out)
db.delete(hnic)
db.commit()
def headnode_detach_network(headnode, hnic):
"""Detach a headnode's nic from any network it's on.
Raises IllegalStateError if the headnode has already been started.
"""
db = model.Session()
headnode = _must_find(db, model.Headnode, headnode)
hnic = _must_find_n(db, headnode, model.Hnic, hnic)
if not headnode.dirty:
raise IllegalStateError
if cfg.getboolean('recursive','rHaaS'):
project = headnode.project.label
bHaaS_out = check_output(['haas','headnode_detach_network',
headnode.label+'_'+project,
hnic.label+'_'+project],
stderr=STDOUT,
shell=False)
error_checker(bHaaS_out)
hnic.network = None
db.commit()
def headnode_detach_network(headnode, hnic):
"""Detach a headnode's nic from any network it's on.
Raises IllegalStateError if the headnode has already been started.
"""
db = model.Session()
headnode = _must_find(db, model.Headnode, headnode)
hnic = _must_find_n(db, headnode, model.Hnic, hnic)
if not headnode.dirty:
raise IllegalStateError
if cfg.getboolean('recursive', 'rHaaS'):
project = headnode.project.label
bHaaS_out = check_output([
'haas', 'headnode_detach_network', headnode.label + '_' + project,
hnic.label + '_' + project
],
stderr=STDOUT,
shell=False)
error_checker(bHaaS_out)
hnic.network = None
db.commit()
def headnode_delete_hnic(headnode, hnic):
"""Delete hnic on a given headnode.
If the hnic does not exist, a NotFoundError will be raised.
"""
db = model.Session()
headnode = _must_find(db, model.Headnode, headnode)
hnic = _must_find_n(db, headnode, model.Hnic, hnic)
if not headnode.dirty:
raise IllegalStateError
if not hnic:
raise NotFoundError("Hnic: " + hnic.label)
if cfg.getboolean('recursive','rHaaS'):
project = headnode.project.label
bHaaS_out = check_output(['haas','headnode_delete_hnic',
headnode.label+'_'+project,
hnic.label+'_'+project],
stderr=STDOUT,
shell=False)
error_checker(bHaaS_out)
db.delete(hnic)
db.commit()
def serve(port):
try:
port = schema.And(schema.Use(int), lambda n: MIN_PORT_NUMBER <= n <= MAX_PORT_NUMBER).validate(port)
except schema.SchemaError:
sys.exit('Error: Invaid port. Must be in the range 1-65535.')
except Exception as e:
sys.exit('Unxpected Error!!! \n %s' % e)
"""Start the HaaS API server"""
if cfg.has_option('devel', 'debug'):
debug = cfg.getboolean('devel', 'debug')
else:
debug = False
# We need to import api here so that the functions within it get registered
# (via `rest_call`), though we don't use it directly:
from haas import model, api, rest
model.init_db()
# Stop all orphan console logging processes on startup
db = model.Session()
nodes = db.query(model.Node).all()
for node in nodes:
node.stop_console()
node.delete_console()
# Start server
rest.serve(port, debug=debug)
def node_connect_network(node, nic, network):
"""Connect a physical NIC to a network.
Raises ProjectMismatchError if the node is not in a project, or if the
project does not have access rights to the given network.
"""
db = model.Session()
node = _must_find(db, model.Node, node)
nic = _must_find_n(db, node, model.Nic, nic)
network = _must_find(db, model.Network, network)
if not node.project:
raise ProjectMismatchError("Node not in project")
project = node.project
if (network.access is not None) and (network.access is not project):
raise ProjectMismatchError("Project does not have access to given network.")
if nic.current_action:
raise BlockedError("A networking operation is already active on the nic.")
if cfg.getboolean('recursive', 'rHaaS'):
bHaaS_out = check_output(['haas','node_connect_network', node.label, nic.label, network.label],stderr=STDOUT, shell=False)
error_checker(bHaaS_out)
db.add(model.NetworkingAction(nic, network))
db.commit()
def headnode_create_hnic(headnode, hnic):
"""Create hnic attached to given headnode.
If the node does not exist, a NotFoundError will be raised.
If there is already an hnic with that name, a DuplicateError will
be raised.
"""
db = model.Session()
headnode = _must_find(db, model.Headnode, headnode)
_assert_absent_n(db, headnode, model.Hnic, hnic)
if not headnode.dirty:
raise IllegalStateError
hnic = model.Hnic(headnode, hnic)
db.add(hnic)
if cfg.getboolean('recursive','rHaaS'):
project = headnode.project.label
bHaaS_out = check_output(['haas','headnode_create_hnic',
headnode.label+'_'+project,
hnic.label+'_'+project],
stderr=STDOUT,
shell=False)
error_checker(bHaaS_out)
db.commit()
def headnode_start(headnode):
"""Start the headnode.
This actually boots up the headnode virtual machine. The VM is created
within libvirt if needed. Once the VM has been started once, it is
"frozen," and all other headnode-related api calls will fail (by raising
an IllegalStateException), with the exception of headnode_stop.
"""
db = model.Session()
headnode = _must_find(db, model.Headnode, headnode)
if cfg.getboolean('recursive', 'rHaaS'):
bHaaS_out = check_output([
'haas', 'headnode_start',
headnode.label + '_' + headnode.project.label
],
stderr=STDOUT,
shell=False)
error_checker(bHaaS_out)
#TODO: is there some way to record headnode.dirty on the rHaaS database also? headnode.dirty = False breaks things
else:
if headnode.dirty:
headnode.create()
headnode.start()
db.commit()
def _should_save(self, switch_type):
"""checks the config file to see if switch should save or not"""
switch_ext = 'haas.ext.switches.' + switch_type
if cfg.has_option(switch_ext, 'save'):
if not cfg.getboolean(switch_ext, 'save'):
return False
return True
def headnode_create(headnode, project, base_img):
"""Create headnode.
If a node with the same name already exists, a DuplicateError will be
raised.
If the project already has a headnode, a DuplicateError will be raised.
If the project does not exist, a NotFoundError will be raised.
"""
if not cfg.getboolean('recursive', 'rHaaS'):
valid_imgs = cfg.get('headnode', 'base_imgs')
valid_imgs = [img.strip() for img in valid_imgs.split(',')]
if base_img not in valid_imgs:
raise BadArgumentError('Provided image is not a valid image.')
# first check the local database to make sure the headnode doesn't already exist
# and the project is valid
db = model.Session()
_assert_absent(db, model.Headnode, headnode)
project = _must_find(db, model.Project, project)
#check for recursive HaaS instance, pass down to base HaaS and check for success/failure
if cfg.getboolean('recursive', 'rHaaS'):
b_project = cfg.get('recursive', 'project')
bHaaS_out = check_output(['haas','headnode_create', headnode+'_'+project.label, b_project, base_img],stderr=STDOUT, shell=False)
error_checker(bHaaS_out)
#else if not recursive, do anything that should only happen @ bHaaS
else:
valid_imgs = cfg.get('headnode', 'base_imgs')
valid_imgs = [img.strip() for img in valid_imgs.split(',')]
if base_img not in valid_imgs:
raise BadArgumentError('Provided image is not a valid image.')
headnode = model.Headnode(project, headnode, base_img)
db.add(headnode)
db.commit()
def start_console(nodename):
"""Start logging output from the console."""
db = model.Session()
node = _must_find(db, model.Node, nodename)
if cfg.getboolean('recursive','rHaaS'):
bHaaS_out = check_output(['haas','start_console', node.label], stderr=STDOUT, shell=False)
error_checker(bHaaS_out)
else:
node.start_console()
def init_auth():
ok = auth.get_auth_backend().authenticate()
if cfg.has_option('auth', 'require_authentication'):
require_auth = cfg.getboolean('auth', 'require_authentication')
else:
require_auth = True
if not ok and require_auth:
raise AuthorizationError("Authentication failed. Authentication "
"is required to use this service.")
def init_auth():
ok = auth.get_auth_backend().authenticate()
if cfg.has_option('auth', 'require_authentication'):
require_auth = cfg.getboolean('auth', 'require_authentication')
else:
require_auth = True
if not ok and require_auth:
raise AuthorizationError("Authentication failed. Authentication "
"is required to use this service.")
def __enter__(self):
local.db = Session()
ok = auth.get_auth_backend().authenticate()
if cfg.has_option('auth', 'require_authentication'):
require_auth = cfg.getboolean('auth', 'require_authentication')
else:
require_auth = True
if not ok and require_auth:
local.db.close()
raise AuthorizationError("Authentication failed. Authentication "
"is required to use this service.")
def node_power_cycle(node):
db = model.Session()
node = _must_find(db, model.Node, node)
if cfg.getboolean('recursive','rHaaS'):
bHaaS_out = check_output(['haas','node_power_cycle', node.label], stderr=STDOUT, shell=False)
error_checker(bHaaS_out)
else:
if not node.power_cycle():
raise ServerError('Could not power cycle node %s' % node.label)
def start_console(nodename):
"""Start logging output from the console."""
db = model.Session()
node = _must_find(db, model.Node, nodename)
if cfg.getboolean('recursive', 'rHaaS'):
bHaaS_out = check_output(['haas', 'start_console', node.label],
stderr=STDOUT,
shell=False)
error_checker(bHaaS_out)
else:
node.start_console()
def node_power_cycle(node):
db = model.Session()
node = _must_find(db, model.Node, node)
if cfg.getboolean('recursive', 'rHaaS'):
bHaaS_out = check_output(['haas', 'node_power_cycle', node.label],
stderr=STDOUT,
shell=False)
error_checker(bHaaS_out)
else:
if not node.power_cycle():
raise ServerError('Could not power cycle node %s' % node.label)
def network_delete(network):
"""Delete network.
If the network does not exist, a NotFoundError will be raised.
"""
db = model.Session()
network = _must_find(db, model.Network, network)
if cfg.getboolean('recursive', 'rHaaS'):
bHaaS_out = check_output([
'haas', 'network_delete',
network.label + '_' + network.creator.label
],
stderr=STDOUT,
shell=False)
error_checker(bHaaS_out)
else:
if network.nics:
raise BlockedError("Network still connected to nodes")
if network.hnics:
raise BlockedError("Network still connected to headnodes")
if network.scheduled_nics:
raise BlockedError(
"Network scheduled to become connected to nodes.")
if network.allocated:
driver_name = cfg.get('general', 'driver')
driver = importlib.import_module('haas.drivers.' + driver_name)
driver.free_network_id(db, network.network_id)
db.delete(network)
if cfg.getboolean('recursive', 'rHaaS'):
b_project = cfg.get('recursive', 'project')
network_name = network.label + b_project
cli.network_delete(network_name)
db.commit()
def headnode_stop(headnode):
"""Stop the headnode.
This powers off the headnode. This is a hard poweroff; the VM is not given
the opportunity to shut down cleanly. This does *not* unfreeze the VM;
headnode_start will be the only valid API call after the VM is powered off.
"""
db = model.Session()
headnode = _must_find(db, model.Headnode, headnode)
if cfg.getboolean('recursive', 'rHaaS'):
bHaaS_out = check_output(['haas','headnode_stop', headnode.label+'_'+headnode.project.label],stderr=STDOUT, shell=False)
error_checker(bHaaS_out)
else:
headnode_stop()
def show_headnode(nodename):
"""Show details of a headnode.
Returns a JSON object representing a headnode.
The obect will have at least the following fields:
* "name", the name/label of the headnode (string).
* "project", the project to which the headnode belongs.
* "hnics", a JSON array of hnic labels that are attached to this
headnode.
* "vncport", the vnc port that the headnode VM is listening on; this
value can be None if the VM is powered off or has not been
created yet.
Example: '{"name": "headnode1",
"project": "project1",
"hnics": ["hnic1", "hnic2"],
"vncport": 5900
}'
"""
db = model.Session()
headnode = _must_find(db, model.Headnode, nodename)
# NOTE: this needs a recursive call because the vncport is only known to base HaaS
# If there is some way to pass that back up on creation and store it in rHaaS,
# this call would not need to be recursive.
#
if cfg.getboolean('recursive', 'rHaaS'):
b_project = headnode.project.label
bHaaS_out = check_output(
['haas', 'show_headnode', headnode.label + '_' + b_project],
stderr=STDOUT,
shell=False)
print "bhaas_out:"
print bHaaS_out
error_checker(bHaaS_out)
pos = find(bHaaS_out, '{')
if (pos < 0):
raise NotFoundError('No JSON found in the base HaaS output')
else:
parsed = json.loads(bHaaS_out[pos:])
headnode.dirty = True
return json.dumps({
'name': headnode.label,
'project': headnode.project.label,
'hnics': [n.label for n in headnode.hnics],
'vncport': parsed['vncport'],
})
def show_console(nodename):
"""Show the contents of the console log."""
db = model.Session()
node = _must_find(db, model.Node, nodename)
#for now we are assumming the node is named the same in rHaaS & bHaaS
if cfg.getboolean('recursive','rHaaS'):
bHaaS_out = check_output(['haas','show_console', node.label], stderr=STDOUT, shell=False)
error_checker(bHaaS_out)
else:
log = node.get_console()
if log is None:
raise NotFoundError('The console log for %s '
'does not exist.' % nodename)
return log
def node_delete(node):
"""Delete node.
If the node does not exist, a NotFoundError will be raised.
"""
db = model.Session()
node = _must_find(db, model.Node, node)
node.stop_console()
node.delete_console()
db.delete(node)
if cfg.getboolean('recursive', 'rHaaS'):
b_project = cfg.get('recursive','project')
bHaaS_out = check_output(['haas','project_detach_node', b_project, node.label],stderr=STDOUT, shell=False)
error_checker(bHaaS_out)
db.commit()
def show_headnode(nodename):
"""Show details of a headnode.
Returns a JSON object representing a headnode.
The obect will have at least the following fields:
* "name", the name/label of the headnode (string).
* "project", the project to which the headnode belongs.
* "hnics", a JSON array of hnic labels that are attached to this
headnode.
* "vncport", the vnc port that the headnode VM is listening on; this
value can be None if the VM is powered off or has not been
created yet.
Example: '{"name": "headnode1",
"project": "project1",
"hnics": ["hnic1", "hnic2"],
"vncport": 5900
}'
"""
db = model.Session()
headnode = _must_find(db, model.Headnode, nodename)
# NOTE: this needs a recursive call because the vncport is only known to base HaaS
# If there is some way to pass that back up on creation and store it in rHaaS,
# this call would not need to be recursive.
#
if cfg.getboolean('recursive','rHaaS'):
b_project = headnode.project.label
bHaaS_out = check_output(['haas','show_headnode', headnode.label+'_'+b_project], stderr=STDOUT, shell=False)
print "bhaas_out:"
print bHaaS_out
error_checker(bHaaS_out)
pos = find(bHaaS_out, '{')
if (pos < 0):
raise NotFoundError('No JSON found in the base HaaS output')
else:
parsed = json.loads(bHaaS_out[pos:])
headnode.dirty = True;
return json.dumps({
'name': headnode.label,
'project': headnode.project.label,
'hnics': [n.label for n in headnode.hnics],
'vncport': parsed['vncport'],
})
def serve():
"""Start the HaaS API server"""
if cfg.has_option('devel', 'debug'):
debug = cfg.getboolean('devel', 'debug')
else:
debug = False
# We need to import api here so that the functions within it get registered
# (via `rest_call`), though we don't use it directly:
from haas import model, api, rest
model.init_db()
# Stop all orphan console logging processes on startup
db = model.Session()
nodes = db.query(model.Node).all()
for node in nodes:
node.stop_console()
node.delete_console()
# Start server
rest.serve(debug=debug)
def show_console(nodename):
"""Show the contents of the console log."""
db = model.Session()
node = _must_find(db, model.Node, nodename)
#for now we are assumming the node is named the same in rHaaS & bHaaS
if cfg.getboolean('recursive', 'rHaaS'):
bHaaS_out = check_output(['haas', 'show_console', node.label],
stderr=STDOUT,
shell=False)
error_checker(bHaaS_out)
else:
log = node.get_console()
if log is None:
raise NotFoundError('The console log for %s '
'does not exist.' % nodename)
return log
def serve():
"""Start the HaaS API server"""
if cfg.has_option('devel', 'debug'):
debug = cfg.getboolean('devel', 'debug')
else:
debug = False
# We need to import api here so that the functions within it get registered
# (via `rest_call`), though we don't use it directly:
from haas import model, api, rest
model.init_db()
# Stop all orphan console logging processes on startup
db = model.Session()
nodes = db.query(model.Node).all()
for node in nodes:
node.stop_console()
node.delete_console()
# Start server
rest.serve(debug=debug)
def serve(port):
try:
port = schema.And(schema.Use(int), lambda n: MIN_PORT_NUMBER <= n <= MAX_PORT_NUMBER).validate(port)
except schema.SchemaError:
sys.exit('Error: Invaid port. Must be in the range 1-65535.')
except Exception as e:
sys.exit('Unxpected Error!!! \n %s' % e)
"""Start the HaaS API server"""
if cfg.has_option('devel', 'debug'):
debug = cfg.getboolean('devel', 'debug')
else:
debug = False
# We need to import api here so that the functions within it get registered
# (via `rest_call`), though we don't use it directly:
from haas import model, api, rest
server.init(stop_consoles=True)
rest.serve(port, debug=debug)
def headnode_connect_network(headnode, hnic, network):
"""Connect a headnode's hnic to a network.
Raises IllegalStateError if the headnode has already been started.
Raises ProjectMismatchError if the project does not have access rights to
the given network.
Raises BadArgumentError if the network is a non-allocated network. This
is currently unsupported due to an implementation limitation, but will be
supported in a future release. See issue #333.
"""
db = model.Session()
headnode = _must_find(db, model.Headnode, headnode)
hnic = _must_find_n(db, headnode, model.Hnic, hnic)
network = _must_find(db, model.Network, network)
if not network.allocated:
raise BadArgumentError("Headnodes may only be connected to networks "
"allocated by the project.")
if not headnode.dirty:
raise IllegalStateError
project = headnode.project
if (network.access is not None) and (network.access is not project):
raise ProjectMismatchError(
"Project does not have access to given network.")
if cfg.getboolean('recursive', 'rHaaS'):
bHaaS_out = check_output([
'haas', 'headnode_connect_network', headnode.label + '_' +
project.label, hnic.label + '_' + project.label,
network.label + '_' + project.label
],
stderr=STDOUT,
shell=False)
error_checker(bHaaS_out)
hnic.network = network
db.commit()
def serve(port):
try:
port = schema.And(
schema.Use(int),
lambda n: MIN_PORT_NUMBER <= n <= MAX_PORT_NUMBER).validate(port)
except schema.SchemaError:
sys.exit('Error: Invaid port. Must be in the range 1-65535.')
except Exception as e:
sys.exit('Unxpected Error!!! \n %s' % e)
"""Start the HaaS API server"""
if cfg.has_option('devel', 'debug'):
debug = cfg.getboolean('devel', 'debug')
else:
debug = False
# We need to import api here so that the functions within it get registered
# (via `rest_call`), though we don't use it directly:
from haas import model, api, rest
server.init(stop_consoles=True)
rest.serve(port, debug=debug)
def headnode_delete(headnode):
"""Delete headnode.
If the node does not exist, a NotFoundError will be raised.
"""
db = model.Session()
headnode = _must_find(db, model.Headnode, headnode)
if cfg.getboolean('recursive', 'rHaaS'):
bHaaS_out = check_output(['haas','headnode_delete', headnode.label+'_'+headnode.project.label],stderr=STDOUT, shell=False)
error_checker(bHaaS_out)
if not headnode.dirty:
headnode.delete()
for hnic in headnode.hnics:
db.delete(hnic)
db.delete(headnode)
db.commit()
def headnode_connect_network(headnode, hnic, network):
"""Connect a headnode's hnic to a network.
Raises IllegalStateError if the headnode has already been started.
Raises ProjectMismatchError if the project does not have access rights to
the given network.
Raises BadArgumentError if the network is a non-allocated network. This
is currently unsupported due to an implementation limitation, but will be
supported in a future release. See issue #333.
"""
db = model.Session()
headnode = _must_find(db, model.Headnode, headnode)
hnic = _must_find_n(db, headnode, model.Hnic, hnic)
network = _must_find(db, model.Network, network)
if not network.allocated:
raise BadArgumentError("Headnodes may only be connected to networks "
"allocated by the project.")
if not headnode.dirty:
raise IllegalStateError
project = headnode.project
if (network.access is not None) and (network.access is not project):
raise ProjectMismatchError("Project does not have access to given network.")
if cfg.getboolean('recursive','rHaaS'):
bHaaS_out = check_output(['haas','headnode_connect_network',
headnode.label+'_'+project.label,
hnic.label+'_'+project.label,
network.label+'_'+project.label],
stderr=STDOUT,
shell=False)
error_checker(bHaaS_out)
hnic.network = network
db.commit()
def node_delete(node):
"""Delete node.
If the node does not exist, a NotFoundError will be raised.
"""
db = model.Session()
node = _must_find(db, model.Node, node)
node.stop_console()
node.delete_console()
db.delete(node)
if cfg.getboolean('recursive', 'rHaaS'):
b_project = cfg.get('recursive', 'project')
bHaaS_out = check_output(
['haas', 'project_detach_node', b_project, node.label],
stderr=STDOUT,
shell=False)
error_checker(bHaaS_out)
db.commit()
def headnode_stop(headnode):
"""Stop the headnode.
This powers off the headnode. This is a hard poweroff; the VM is not given
the opportunity to shut down cleanly. This does *not* unfreeze the VM;
headnode_start will be the only valid API call after the VM is powered off.
"""
db = model.Session()
headnode = _must_find(db, model.Headnode, headnode)
if cfg.getboolean('recursive', 'rHaaS'):
bHaaS_out = check_output([
'haas', 'headnode_stop',
headnode.label + '_' + headnode.project.label
],
stderr=STDOUT,
shell=False)
error_checker(bHaaS_out)
else:
headnode_stop()
def node_detach_network(node, nic):
"""Detach a physical nic from any network it's on.
Raises ProjectMismatchError if the node is not in a project.
"""
db = model.Session()
node = _must_find(db, model.Node, node)
nic = _must_find_n(db, node, model.Nic, nic)
if not node.project:
raise ProjectMismatchError("Node not in project")
if nic.current_action:
raise BlockedError("A networking operation is already active on the nic.")
if cfg.getboolean('recursive', 'rHaaS'):
bHaaS_out = check_output(['haas','node_detach_network', node.label, nic.label],stderr=STDOUT, shell=False)
error_checker(bHaaS_out)
db.add(model.NetworkingAction(nic, None))
db.commit()
def headnode_start(headnode):
"""Start the headnode.
This actually boots up the headnode virtual machine. The VM is created
within libvirt if needed. Once the VM has been started once, it is
"frozen," and all other headnode-related api calls will fail (by raising
an IllegalStateException), with the exception of headnode_stop.
"""
db = model.Session()
headnode = _must_find(db, model.Headnode, headnode)
if cfg.getboolean('recursive', 'rHaaS'):
bHaaS_out = check_output(['haas','headnode_start', headnode.label+'_'+headnode.project.label],stderr=STDOUT, shell=False)
error_checker(bHaaS_out)
#TODO: is there some way to record headnode.dirty on the rHaaS database also? headnode.dirty = False breaks things
else:
if headnode.dirty:
headnode.create()
headnode.start()
db.commit()
def node_connect_network(node, nic, network):
"""Connect a physical NIC to a network.
Raises ProjectMismatchError if the node is not in a project, or if the
project does not have access rights to the given network.
"""
db = model.Session()
node = _must_find(db, model.Node, node)
nic = _must_find_n(db, node, model.Nic, nic)
network = _must_find(db, model.Network, network)
if not node.project:
raise ProjectMismatchError("Node not in project")
project = node.project
if (network.access is not None) and (network.access is not project):
raise ProjectMismatchError(
"Project does not have access to given network.")
if nic.current_action:
raise BlockedError(
"A networking operation is already active on the nic.")
if cfg.getboolean('recursive', 'rHaaS'):
bHaaS_out = check_output([
'haas', 'node_connect_network', node.label, nic.label,
network.label
],
stderr=STDOUT,
shell=False)
error_checker(bHaaS_out)
db.add(model.NetworkingAction(nic, network))
db.commit()
def headnode_delete(headnode):
"""Delete headnode.
If the node does not exist, a NotFoundError will be raised.
"""
db = model.Session()
headnode = _must_find(db, model.Headnode, headnode)
if cfg.getboolean('recursive', 'rHaaS'):
bHaaS_out = check_output([
'haas', 'headnode_delete',
headnode.label + '_' + headnode.project.label
],
stderr=STDOUT,
shell=False)
error_checker(bHaaS_out)
if not headnode.dirty:
headnode.delete()
for hnic in headnode.hnics:
db.delete(hnic)
db.delete(headnode)
db.commit()
def network_create(network, creator, access, net_id):
"""Create a network.
If the network with that name already exists, a DuplicateError will be
raised.
If the combination of creator, access, and net_id is illegal, a
BadArgumentError will be raised.
If network ID allocation was requested, and the network cannot be
allocated (due to resource exhaustion), an AllocationError will be raised.
Pass 'admin' as creator for an administrator-owned network. Pass '' as
access for a publicly accessible network. Pass '' as net_id if you wish
to use the HaaS's network-id allocation pool.
Details of the various combinations of network attributes are in
docs/networks.md
"""
db = model.Session()
_assert_absent(db, model.Network, network)
# Check legality of arguments, and find correct 'access' and 'creator'
if creator != "admin":
# Project-owned network
if access != creator:
raise BadArgumentError("Project-created networks must be accessed only by that project.")
if net_id != "":
raise BadArgumentError("Project-created networks must use network ID allocation")
creator = _must_find(db, model.Project, creator)
access = _must_find(db, model.Project, access)
else:
# Administrator-owned network
creator = None
if access == "":
access = None
else:
access = _must_find(db, model.Project, access)
if cfg.getboolean('recursive','rHaaS'):
#TODO - work out whether there is such a thing as an admin-created network in rHaaS
# if so, how do we handle this case at bHaaS
project = creator.label
b_project = cfg.get('recursive','project')
allocated = True; #rHaaS always has allocated netIDs
net_id = "dummy";
#if creator.label == "admin":
# b_project = cfg.get('recursive','project')
#else:
# project = creator.label
# print project
bHaaS_out = check_output(['haas','network_create',
network+'_'+project,
b_project, #how to handle case of admin in rHaaS?
b_project, #access and creator must be the same?
""],
stderr=STDOUT,
shell=False)
error_checker(bHaaS_out) #can you get the assigned netID here? for now just dummy it out?
network = model.Network(creator, access, allocated, net_id, network)
else:
# Allocate net_id, if requested
if net_id == "":
driver_name = cfg.get('general', 'driver')
driver = importlib.import_module('haas.drivers.' + driver_name)
net_id = driver.get_new_network_id(db)
if net_id is None:
raise AllocationError('No more networks')
allocated = True
else:
allocated = False
network = model.Network(creator, access, allocated, net_id, network)
db.add(network)
if cfg.getboolean('recursive', 'rHaaS'):
b_project = cfg.get('recursive', 'project')
network_name = network.label + b_project
net_id = ''
cli.network_create(network_name, b_project, b_project, net_id)
db.commit()
def network_create(network, creator, access, net_id):
"""Create a network.
If the network with that name already exists, a DuplicateError will be
raised.
If the combination of creator, access, and net_id is illegal, a
BadArgumentError will be raised.
If network ID allocation was requested, and the network cannot be
allocated (due to resource exhaustion), an AllocationError will be raised.
Pass 'admin' as creator for an administrator-owned network. Pass '' as
access for a publicly accessible network. Pass '' as net_id if you wish
to use the HaaS's network-id allocation pool.
Details of the various combinations of network attributes are in
docs/networks.md
"""
db = model.Session()
_assert_absent(db, model.Network, network)
# Check legality of arguments, and find correct 'access' and 'creator'
if creator != "admin":
# Project-owned network
if access != creator:
raise BadArgumentError(
"Project-created networks must be accessed only by that project."
)
if net_id != "":
raise BadArgumentError(
"Project-created networks must use network ID allocation")
creator = _must_find(db, model.Project, creator)
access = _must_find(db, model.Project, access)
else:
# Administrator-owned network
creator = None
if access == "":
access = None
else:
access = _must_find(db, model.Project, access)
if cfg.getboolean('recursive', 'rHaaS'):
#TODO - work out whether there is such a thing as an admin-created network in rHaaS
# if so, how do we handle this case at bHaaS
project = creator.label
b_project = cfg.get('recursive', 'project')
allocated = True
#rHaaS always has allocated netIDs
net_id = "dummy"
#if creator.label == "admin":
# b_project = cfg.get('recursive','project')
#else:
# project = creator.label
# print project
bHaaS_out = check_output(
[
'haas',
'network_create',
network + '_' + project,
b_project, #how to handle case of admin in rHaaS?
b_project, #access and creator must be the same?
""
],
stderr=STDOUT,
shell=False)
error_checker(
bHaaS_out
) #can you get the assigned netID here? for now just dummy it out?
network = model.Network(creator, access, allocated, net_id, network)
else:
# Allocate net_id, if requested
if net_id == "":
driver_name = cfg.get('general', 'driver')
driver = importlib.import_module('haas.drivers.' + driver_name)
net_id = driver.get_new_network_id(db)
if net_id is None:
raise AllocationError('No more networks')
allocated = True
else:
allocated = False
network = model.Network(creator, access, allocated, net_id, network)
db.add(network)
if cfg.getboolean('recursive', 'rHaaS'):
b_project = cfg.get('recursive', 'project')
network_name = network.label + b_project
net_id = ''
cli.network_create(network_name, b_project, b_project, net_id)
db.commit()
