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Fixes #2777: Fix cable validation to handle duplicate connections on import

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This commit is contained in:
Jeremy Stretch
2019-01-11 10:17:06 -05:00
parent c89735cd4e
commit dd5f37391f
2 changed files with 46 additions and 42 deletions
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87
netbox/dcim/models.py
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@ -2558,52 +2558,55 @@ class Cable(ChangeLoggedModel):
def clean(self):
# Check that termination types are compatible
type_a = self.termination_a_type.model
type_b = self.termination_b_type.model
if type_b not in COMPATIBLE_TERMINATION_TYPES.get(type_a):
raise ValidationError("Incompatible termination types: {} and {}".format(
self.termination_a_type, self.termination_b_type
))
if self.termination_a and self.termination_b:
# A termination point cannot be connected to itself
if self.termination_a == self.termination_b:
raise ValidationError("Cannot connect {} to itself".format(self.termination_a_type))
type_a = self.termination_a_type.model
type_b = self.termination_b_type.model
# A front port cannot be connected to its corresponding rear port
if (
type_a in ['frontport', 'rearport'] and
type_b in ['frontport', 'rearport'] and
(
getattr(self.termination_a, 'rear_port', None) == self.termination_b or
getattr(self.termination_b, 'rear_port', None) == self.termination_a
)
):
raise ValidationError("A front port cannot be connected to it corresponding rear port")
# Check that termination types are compatible
if type_b not in COMPATIBLE_TERMINATION_TYPES.get(type_a):
raise ValidationError("Incompatible termination types: {} and {}".format(
self.termination_a_type, self.termination_b_type
))
# Check for an existing Cable connected to either termination object
if self.termination_a.cable not in (None, self):
raise ValidationError("{} already has a cable attached (#{})".format(
self.termination_a, self.termination_a.cable_id
))
if self.termination_b.cable not in (None, self):
raise ValidationError("{} already has a cable attached (#{})".format(
self.termination_b, self.termination_b.cable_id
))
# A termination point cannot be connected to itself
if self.termination_a == self.termination_b:
raise ValidationError("Cannot connect {} to itself".format(self.termination_a_type))
# Virtual interfaces cannot be connected
endpoint_a, endpoint_b, _ = self.get_path_endpoints()
if (
(
isinstance(endpoint_a, Interface) and
endpoint_a.form_factor == IFACE_FF_VIRTUAL
) or
(
isinstance(endpoint_b, Interface) and
endpoint_b.form_factor == IFACE_FF_VIRTUAL
)
):
raise ValidationError("Cannot connect to a virtual interface")
# A front port cannot be connected to its corresponding rear port
if (
type_a in ['frontport', 'rearport'] and
type_b in ['frontport', 'rearport'] and
(
getattr(self.termination_a, 'rear_port', None) == self.termination_b or
getattr(self.termination_b, 'rear_port', None) == self.termination_a
)
):
raise ValidationError("A front port cannot be connected to it corresponding rear port")
# Check for an existing Cable connected to either termination object
if self.termination_a.cable not in (None, self):
raise ValidationError("{} already has a cable attached (#{})".format(
self.termination_a, self.termination_a.cable_id
))
if self.termination_b.cable not in (None, self):
raise ValidationError("{} already has a cable attached (#{})".format(
self.termination_b, self.termination_b.cable_id
))
# Virtual interfaces cannot be connected
endpoint_a, endpoint_b, _ = self.get_path_endpoints()
if (
(
isinstance(endpoint_a, Interface) and
endpoint_a.form_factor == IFACE_FF_VIRTUAL
) or
(
isinstance(endpoint_b, Interface) and
endpoint_b.form_factor == IFACE_FF_VIRTUAL
)
):
raise ValidationError("Cannot connect to a virtual interface")
# Validate length and length_unit
if self.length is not None and self.length_unit is None: