Damien/arista-evpn-vxlan-clab
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fix: use Jinja2 none instead of null and add defensive checks for optional relationships (#20)

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Replace all `null` literals with `none` (valid Jinja2/Python) in all three
templates. Add explicit `is defined and is not none and .node is not none`
guards before accessing nested nodes on optional GraphQL relationships, to
avoid `Undefined is not JSON serializable` errors at render time.

Also add `| default(none)` on optional scalar attributes (speed, mode,
lacp_mode, mlag_id, mtu, description, virtual_router_address,
route_distinguisher, learn_restrict, vlan_type, trunk_groups) so that
Infrahub `Undefined` values from unset optional fields are safely coerced
to JSON null rather than crashing tojson serialization.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
Damien
2026-02-28 17:41:19 +01:00
parent 584a4ad5a4
commit a415de85bd
3 changed files with 45 additions and 45 deletions
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34
transforms/templates/interface_yang.j2
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@@ -17,9 +17,9 @@
{%- set _ = interfaces.append({
"type": "loopback",
"name": iface.name.value,
"description": iface.description.value,
"description": iface.description.value | default(none),
"enabled": iface.enabled.value,
"mtu": iface.mtu.value,
"mtu": iface.mtu.value | default(none),
"ip_addresses": ip_list
}) -%}
{%- endfor -%}
@@ -31,18 +31,18 @@
{%- for ip_edge in iface.ip_addresses.edges -%}
{%- set _ = ip_list.append(ip_edge.node.address.value) -%}
{%- endfor -%}
{%- set lag_name = null -%}
{%- if iface.lag and iface.lag.node -%}
{%- set lag_name = none -%}
{%- if iface.lag is defined and iface.lag is not none and iface.lag.node is not none -%}
{%- set lag_name = iface.lag.node.name.value -%}
{%- endif -%}
{%- set _ = interfaces.append({
"type": "ethernet",
"name": iface.name.value,
"description": iface.description.value,
"description": iface.description.value | default(none),
"enabled": iface.enabled.value,
"mtu": iface.mtu.value,
"speed": iface.speed.value,
"mode": iface.mode.value,
"mtu": iface.mtu.value | default(none),
"speed": iface.speed.value | default(none),
"mode": iface.mode.value | default(none),
"lag": lag_name,
"ip_addresses": ip_list
}) -%}
@@ -55,18 +55,18 @@
{%- for ip_edge in iface.ip_addresses.edges -%}
{%- set _ = ip_list.append(ip_edge.node.address.value) -%}
{%- endfor -%}
{%- set vlan_id = null -%}
{%- if iface.vlan and iface.vlan.node -%}
{%- set vlan_id = none -%}
{%- if iface.vlan is defined and iface.vlan is not none and iface.vlan.node is not none -%}
{%- set vlan_id = iface.vlan.node.vlan_id.value -%}
{%- endif -%}
{%- set _ = interfaces.append({
"type": "vlan",
"name": iface.name.value,
"description": iface.description.value,
"description": iface.description.value | default(none),
"enabled": iface.enabled.value,
"mtu": iface.mtu.value,
"mtu": iface.mtu.value | default(none),
"vlan_id": vlan_id,
"virtual_router_address": iface.virtual_router_address.value,
"virtual_router_address": iface.virtual_router_address.value | default(none),
"autostate": iface.autostate.value,
"ip_addresses": ip_list
}) -%}
@@ -86,11 +86,11 @@
{%- set _ = interfaces.append({
"type": "lag",
"name": iface.name.value,
"description": iface.description.value,
"description": iface.description.value | default(none),
"enabled": iface.enabled.value,
"mtu": iface.mtu.value,
"lacp_mode": iface.lacp_mode.value,
"mlag_id": iface.mlag_id.value,
"mtu": iface.mtu.value | default(none),
"lacp_mode": iface.lacp_mode.value | default(none),
"mlag_id": iface.mlag_id.value | default(none),
"members": member_list,
"ip_addresses": ip_list
}) -%}