bug: dashboard should not support '!' in vars.

[840963657]

Issue description

apisix not support '!' operator . apisix error log: 2022/12/08 10:57:25 [error] 6804#6804: *2355864 [lua] config_etcd.lua:573: failed to fetch data from etcd: failed to check item data of [/apisix/routes] err:failed to validate the 'vars' expression: invalid operator '!', etcd key: /apisix/routes, context: ngx.timer

Expected behavior

When create route, dashboard should not support '!' in vars.

How to Reproduce

1. create route in dashboard
2. add vars in route,operator use '!'
3. view apisix's error.log file

Screenshots

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Environment

• apisix version (cmd: apisix version): 2.13
• OS (cmd: uname -a): Linux localhost.localdomain 3.10.0-1062.18.1.el7.x86_64 #1 SMP Tue Mar 17 23:49:17 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
• OpenResty / Nginx version (cmd: nginx -V or openresty -V): nginx version: openresty/1.19.9.1
• etcd version, if have (cmd: run etcd --version): etcd Version: 3.4.13
• apisix-dashboard version, if have: 2.10
• Browser version, if have: chrome

Additional context

lua-resty-expr https://github.com/api7/lua-resty-expr/blob/main/lib/resty/expr/v1.lua lua-resty-expr don't support this operator '!'

[SkyeYoung]

Could u pls provide more accurate information?

[840963657]

1、create route, add vars in route,operator use '!',like this: { "uri": "/", "name": "test", "methods": [ "GET" ], "vars": [ [ "http_test1", "!", "123" ] ], ....... 2、view apisix's error.log file: 2022/12/08 10:57:25 [error] 6804#6804: 2355864 [lua] config_etcd.lua:573: failed to fetch data from etcd: failed to check item data of [/apisix/routes] err:failed to validate the 'vars' expression: invalid operator '!', etcd key: /apisix/routes, context: ngx.timer

[Baoyuantop]

Hi @840963657, can you help with the specific steps to create this route using the dashboard? Also, you can try the latest version of the dashboard.

[Baoyuantop]

1、create route, add vars in route,operator use '!',like this: { "uri": "/", "name": "test", "methods": [ "GET" ], "vars": [ [ "http_test1", "!", "123" ] ], ....... 2、view apisix's error.log file: 2022/12/08 10:57:25 [error] 6804#6804: 2355864 [lua] config_etcd.lua:573: failed to fetch data from etcd: failed to check item data of [/apisix/routes] err:failed to validate the 'vars' expression: invalid operator '!', etcd key: /apisix/routes, context: ngx.timer

Unable to create this configuration via the UI, are you using the raw data editor?