skynet-webportal/docker/nginx/conf.d/include/init-optional-variables

# optional variables initialisation - those variables are used in log_format
# but are not set on every route so we need to initialise them with empty value
# because otherwise logger with throw error

# set only on hns routes
set $hns_domain "";

# set only if server has been access through SERVER_DOMAIN
set $server_alias "";

# expose skylink variable so we can use it in access log
set $skylink "";

# cached account limits (json string) - applies only if accounts are enabled
set $account_limits "";

# set this internal flag to true if current request should not be limited in any way
set $internal_no_limits "false";