Hi all,
I'm using Jinja2 template to generate config files, but I found a BUG,
which is I could not assign value in a loop, like this:
1) use this template, could generate 'uuusevrf'
{% block vrf_mgmt_interface %}
{% set usevrf = 'no' %}
{% set usevrf = 'nono' %}
{% if MGMT_INTERFACE %}
{% set uuusevrf = 'yes' %}
{% for (name, prefix) in MGMT_INTERFACE %}
{% if name == 'eth0' %}
{% if MGMT_INTERFACE[(name, prefix)].has_key('vrfname') %}
{% if prefix | ipv4 %}
USE_VRF=2
IP_VERSION=4
ETH_NAME=eth0
ETH_IP={{ prefix | ip }}
ETH_SUB_NET={{ prefix | network }}/{{ prefix | prefixlen }}
ETH_LOOKUP_IP={{ prefix | ip }}
VRFNAME={{ MGMT_INTERFACE[(name, prefix)]['vrfname'] }}
GWADDR={{ MGMT_INTERFACE[(name, prefix)]['gwaddr'] }}
{% else %}
USE_VRF=2
IP_VERSION=6
ETH_NAME=eth0
ETH_IP={{ prefix | ip }}
ETH_SUB_NET={{ prefix | network }}/{{ prefix | prefixlen }}
ETH_LOOKUP_IP={{ prefix | ip }}
VRFNAME={{ MGMT_INTERFACE[(name, prefix)]['vrfname'] }}
GWADDR={{ MGMT_INTERFACE[(name, prefix)]['gwaddr'] }}
{% endif %}
{% else %}
USE_VRF=1
{% endif %}
{% endif %}
{% endfor %}
{% endif %}
{{ usevrf }}
{{ uuusevrf }}
{% endblock vrf_mgmt_interface %}
2) could generate 'uuusevrf', this is result:
rfaces.j211:~# sonic-cfggen -d -t
/usr/share/sonic/templates/vrf_management_inter
USE_VRF=2
IP_VERSION=4
ETH_NAME=eth0
ETH_IP=172.18.8.211
ETH_SUB_NET=172.18.8.0/24
ETH_LOOKUP_IP=172.18.8.211
VRFNAME=mgmtvrf
GWADDR=172.18.8.1
nono
yes
2) use this template, could NOT generate 'uuusevrf'
{% block vrf_mgmt_interface %}
{% set usevrf = 'no' %}
{% set usevrf = 'nono' %}
{% if MGMT_INTERFACE %}
{% for (name, prefix) in MGMT_INTERFACE %}
{% set uuusevrf = 'yes' %}
{% if name == 'eth0' %}
{% if MGMT_INTERFACE[(name, prefix)].has_key('vrfname') %}
{% if prefix | ipv4 %}
USE_VRF=2
IP_VERSION=4
ETH_NAME=eth0
ETH_IP={{ prefix | ip }}
ETH_SUB_NET={{ prefix | network }}/{{ prefix | prefixlen }}
ETH_LOOKUP_IP={{ prefix | ip }}
VRFNAME={{ MGMT_INTERFACE[(name, prefix)]['vrfname'] }}
GWADDR={{ MGMT_INTERFACE[(name, prefix)]['gwaddr'] }}
{% else %}
USE_VRF=2
IP_VERSION=6
ETH_NAME=eth0
ETH_IP={{ prefix | ip }}
ETH_SUB_NET={{ prefix | network }}/{{ prefix | prefixlen }}
ETH_LOOKUP_IP={{ prefix | ip }}
VRFNAME={{ MGMT_INTERFACE[(name, prefix)]['vrfname'] }}
GWADDR={{ MGMT_INTERFACE[(name, prefix)]['gwaddr'] }}
{% endif %}
{% else %}
USE_VRF=1
{% endif %}
{% endif %}
{% endfor %}
{% endif %}
{{ usevrf }}
{{ uuusevrf }}
{% endblock vrf_mgmt_interface %}
4) could NOT generate, this is result:
rfaces.j211:~# sonic-cfggen -d -t
/usr/share/sonic/templates/vrf_management_inter
USE_VRF=2
IP_VERSION=4
ETH_NAME=eth0
ETH_IP=172.18.8.211
ETH_SUB_NET=172.18.8.0/24
ETH_LOOKUP_IP=172.18.8.211
VRFNAME=mgmtvrf
GWADDR=172.18.8.1
nono
So, why ???
You could see that, same data, just the position of this line ({% set
uuusevrf = 'yes' %}) is different. And the result show it definitely go
into loop, but why this line NOT work ???
BTW, It's hard to debug !!!!!!
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