def delete_namespace(namespace):
namespace = util.process_namespace(namespace)
if namespace not in list_namespaces().get_json():
raise exceptions.ServerError(f"Invalid namespace {namespace}")
interfaces: List = list_interfaces(namespace).get_json()
untagged: List = [
interface
for interface in interfaces
if "." not in interface and interface != "lo"
]
if untagged:
raise exceptions.ServerError(
"Unable to delete namespace with untagged interfaces %s in it."
" Move them to another interface first."
% ", ".join(untagged)
)
if app.simulate:
cfg = get_config()
if namespace not in cfg.namespaces:
return abort(404)
del cfg.namespaces[namespace]
return jsonify({})
util.delete_namespace(namespace)
return jsonify({})
def move_interface(namespace, interface):
namespace = util.process_namespace(namespace)
parts = interface.split(".")
if len(parts) not in range(1, 4):
raise exceptions.ServerError(f"Only untagged, single and double tagged interfaces are supported")
if app.simulate:
cfg = get_config()
if namespace not in cfg.namespaces:
abort(404)
all_interfaces = [intf.name for intf in cfg.namespaces[namespace].interfaces]
else:
all_interfaces = util.list_interfaces(namespace)
if interface not in all_interfaces:
raise exceptions.ServerError(f"Interface {interface} does not exist in {namespace}")
new_namespace_key: str = "destination_namespace"
if new_namespace_key not in request.json:
raise exceptions.ServerError(f"Invalid request: request should contain \"destination_namespace\"")
new_namespace = request.json[new_namespace_key]
if app.simulate:
old_ns: Namespace = cfg.namespaces[namespace]
new_ns: Namespace = cfg.namespaces[new_namespace]
iface: Interface = old_ns.get_interface(interface)
old_ns.interfaces.remove(iface)
new_ns.interfaces.append(iface)
else:
util.move_interface(new_namespace, interface, interface, old_namespace=namespace)
return jsonify({})
def get_interface_state(namespace: str, interface: str) -> Dict:
""" Get the state of the given interface. This method returns a dict with key "interface".
The value is a dict with keys:
up: boolean, true if the service is up
mtu: integer mtu value
address: A list of address objects. Each object contains address and family attributes (inet or inet6)
"""
try:
output = run_in_ns(namespace, ["ip", "-j", "addr", "ls", "dev", interface])
except subprocess.CalledProcessError:
raise exceptions.ServerError(f"Failed to list addresses on interface {interface} (location={namespace})")
result = [x for x in json.loads(output) if len(x)]
if len(result) != 1:
LOGGER.error("Got %s from call", result)
raise exceptions.ServerError(f"Failed to list addresses on interface {interface} (location={namespace})")
return {
"interface": {
"address": [
{"address": x["local"], "family": x["family"], "prefixlen": x["prefixlen"]} for x in result[0]["addr_info"]
],
"up": "UP" in result[0]["flags"],
"mtu": result[0]["mtu"],
}
}
def process_namespace(namespace: str, allow_none: Optional[bool] = False) -> Optional[str]:
"""Processes namespace values get by REST handler to check if namespace has been defined (correctly)
"""
if namespace is None or len(namespace) == 0:
raise exceptions.ServerError(f"Invalid namespace {namespace}")
if namespace == NO_NAMESPACE_VALUE:
if not allow_none:
raise exceptions.ServerError(f"Invalid namespace {namespace} - this value is a reserved keyword")
return None
return namespace
def create_sub_interface(namespace, interface):
if namespace is None or len(namespace) == 0:
raise exceptions.ServerError(f"Invalid namespace {namespace}")
parts = interface.split(".")
if len(parts) not in [2, 3]:
raise exceptions.ServerError(
f"Only single and double tagged interfaces are supported")
if app.simulate:
cfg = get_config()
if namespace not in cfg.namespaces:
abort(404)
all_interfaces = [
intf.name for intf in cfg.namespaces[namespace].interfaces
]
else:
all_interfaces = util.list_interfaces(namespace)
if interface in all_interfaces:
raise exceptions.ServerError(
f"Interface {interface} already exists in {namespace}")
base_interface = parts.pop(0)
if base_interface not in all_interfaces:
raise exceptions.ServerError(
f"Base interface {base_interface} does not exist")
outer = int(parts.pop(0))
inner = 0
if len(parts):
inner = int(parts[0])
if app.simulate:
ns = cfg.namespaces[namespace]
base_intf = ns.get_interface(base_interface)
intf = config.Interface(name=interface, mac=base_intf.mac)
ns.interfaces.append(intf)
return jsonify({"interface": intf.get_state()})
else:
util.create_sub_interface(namespace, base_interface, outer, inner)
return jsonify(util.get_interface_state(namespace, interface))
def list_interfaces(namespace):
if namespace is None or len(namespace) == 0:
raise exceptions.ServerError(f"Invalid namespace {namespace}")
if app.simulate:
cfg = get_config()
if namespace not in cfg.namespaces:
return abort(404)
return jsonify(
[intf.name for intf in cfg.namespaces[namespace].interfaces])
return jsonify(util.list_interfaces(namespace))
def delete_sub_interface(namespace, interface):
namespace = util.process_namespace(namespace)
parts = interface.split(".")
if len(parts) not in [2, 3]:
raise exceptions.ServerError(f"Only single and double tagged interfaces are supported")
if app.simulate:
cfg = get_config()
if namespace not in cfg.namespaces:
abort(404)
all_interfaces = [intf.name for intf in cfg.namespaces[namespace].interfaces]
else:
all_interfaces = util.list_interfaces(namespace)
if interface not in all_interfaces:
raise exceptions.ServerError(f"Interface {interface} dot exist in {namespace}")
base_interface = parts.pop(0)
if base_interface not in all_interfaces:
raise exceptions.ServerError(f"Base interface {base_interface} does not exist")
outer = int(parts.pop(0))
inner = 0
if len(parts):
inner = int(parts[0])
if app.simulate:
ns = cfg.namespaces[namespace]
intf = ns.get_interface(interface)
ns.interfaces.remove(intf)
else:
util.delete_sub_interface(namespace, base_interface, outer, inner)
return jsonify({})
def set_interface_state(namespace, interface):
if namespace is None or len(namespace) == 0:
raise exceptions.ServerError(f"Invalid namespace {namespace}")
if app.simulate:
cfg = get_config()
if namespace not in cfg.namespaces:
abort(404)
ns = cfg.namespaces[namespace]
intf = ns.get_interface(interface)
if intf is None:
abort(404)
intf.set_state(request.json)
return jsonify({"interface": intf.get_state()})
else:
util.set_interface_state(namespace, interface, request.json)
return jsonify(util.get_interface_state(namespace, interface))
def get_interface_state(namespace, interface):
if namespace is None or len(namespace) == 0:
raise exceptions.ServerError(f"Invalid namespace {namespace}")
if app.simulate:
cfg = get_config()
if namespace not in cfg.namespaces:
abort(404)
ns = cfg.namespaces[namespace]
intf = ns.get_interface(interface)
if intf is None:
abort(404)
return jsonify({"interface": intf.get_state()})
else:
try:
return jsonify(util.get_interface_state(namespace, interface))
except Exception:
LOGGER.exception("Failed to get the interface state")
abort(404)
def add_route_from_ns(namespace):
namespace = util.process_namespace(namespace, allow_none=True)
subnet = request.get_json(force=True).get("subnet")
gateway = request.get_json(force=True).get("gateway", None)
interface = request.get_json(force=True).get("interface", None)
if gateway is None and interface is None:
raise exceptions.ServerError("gateway or interface should be set.")
if app.simulate:
cfg = get_config()
if namespace not in cfg.namespaces:
abort(404)
ns = cfg.namespaces[namespace]
route = Route(subnet, gateway, interface)
if route in ns.routes:
abort(409)
else:
ns.routes.append(route)
return jsonify([route.to_json() for route in ns.routes])
else:
try:
util.run_in_ns(
namespace,
[
"ip",
"route",
"add",
subnet,
*(["via", gateway] if gateway is not None else []),
*(["dev", interface] if interface is not None else []),
],
)
routes = util.list_routes(namespace)
return jsonify(routes)
except subprocess.CalledProcessError as e:
LOGGER.exception("status: %s, out: %s, err: %s", e.returncode, e.stdout, e.stderr)
return jsonify({})
def add_namespace(namespace):
if namespace is None or len(namespace) == 0:
raise exceptions.ServerError(f"Invalid namespace {namespace}")
if app.simulate:
cfg = get_config()
if namespace in cfg.namespaces:
return abort(409)
cfg.namespaces[namespace] = Namespace(namespace,
interfaces=[{
"ifindex":
1,
"ifname":
"lo",
"flags": ["LOOPBACK"],
"mtu":
65536,
"qdisc":
"noop",
"operstate":
"DOWN",
"linkmode":
"DEFAULT",
"group":
"default",
"txqlen":
1000,
"link_type":
"loopback",
"address":
"00:00:00:00:00:00",
"broadcast":
"00:00:00:00:00:00"
}])
return jsonify({})
create_namespace(namespace)
return jsonify({})
