[swss] Reduce Calls to SONiC Cfggen (#5177)

Calls to sonic-cfggen is CPU expensive. This PR reduces calls to
sonic-cfggen to one call during startup when starting swss service.

singed-off-by: Tamer Ahmed <tamer.ahmed@microsoft.com>
This commit is contained in:
Tamer Ahmed 2020-08-17 15:47:52 -07:00 committed by GitHub
parent a10c5bfd02
commit 89f3206a3f
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2 changed files with 11 additions and 5 deletions

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@ -2,10 +2,16 @@
mkdir -p /etc/swss/config.d/
sonic-cfggen -d -y /etc/sonic/sonic_version.yml -t /usr/share/sonic/templates/switch.json.j2 > /etc/swss/config.d/switch.json
sonic-cfggen -d -t /usr/share/sonic/templates/ipinip.json.j2 > /etc/swss/config.d/ipinip.json
sonic-cfggen -d -t /usr/share/sonic/templates/ports.json.j2 > /etc/swss/config.d/ports.json
sonic-cfggen -d -t /usr/share/sonic/templates/copp.json.j2 > /etc/swss/config.d/00-copp.config.json
CFGGEN_PARAMS=" \
-d \
-y /etc/sonic/constants.yml \
-t /usr/share/sonic/templates/switch.json.j2,/etc/swss/config.d/switch.json \
-t /usr/share/sonic/templates/ipinip.json.j2,/etc/swss/config.d/ipinip.json \
-t /usr/share/sonic/templates/ports.json.j2,/etc/swss/config.d/ports.json \
-t /usr/share/sonic/templates/copp.json.j2,/etc/swss/config.d/00-copp.config.json \
-t /usr/share/sonic/templates/vlan_vars.j2 \
"
VLAN=$(sonic-cfggen $CFGGEN_PARAMS)
# Executed HWSKU specific initialization tasks.
if [ -x /usr/share/sonic/hwsku/hwsku-init ]; then
@ -13,7 +19,6 @@ if [ -x /usr/share/sonic/hwsku/hwsku-init ]; then
fi
# Start arp_update when VLAN exists
VLAN=`sonic-cfggen -d -v 'VLAN.keys() | join(" ") if VLAN'`
if [ "$VLAN" != "" ]; then
cp /usr/share/sonic/templates/arp_update.conf /etc/supervisord/conf.d/
fi

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@ -0,0 +1 @@
{%- if VLAN -%}{{- VLAN.keys() | join(' ') -}}{%- endif -%}