[Chinese](../zh-cn/plugins/serverless.md) # Summary - [**Name**](#name) - [**Attributes**](#attributes) - [**How To Enable**](#how-to-enable) - [**Test Plugin**](#test-plugin) - [**Disable Plugin**](#disable-plugin) ## Name There are two plug-ins for serverless, namely `serverless-pre-function` and `serverless-post-function`. The former runs at the beginning of the specified phase, while the latter runs at the end of the specified phase. Both plug-ins receive the same parameters. ## Attributes |Name |Requirement |Description| |--------- |--------|-----------| | phase |optional|The default phase is `access`, if not specified. The valid phases are: `rewrite`, `access`,`Header_filer`, `body_filter`, `log` and `balancer`.| | functions |required|A list of functions that are specified to run is an array type, which can contain either one function or multiple functions, executed sequentially.| Note that only function is accepted here, not other types of Lua code. For example, anonymous functions are legal:
```lua return function() ngx.log(ngx.ERR, 'one') end ``` Closure is also legal: ```lua local count = 1 return function() count = count + 1 ngx.say(count) end ``` But code that is not a function type is illegal: ```lua local count = 1 ngx.say(count) ``` ## How To Enable Here's an example, enable the serverless plugin on the specified route: ```shell curl -i http://127.0.0.1:9080/apisix/admin/routes/1 -H 'X-API-KEY: edd1c9f034335f136f87ad84b625c8f1' -X PUT -d ' { "uri": "/index.html", "plugins": { "serverless-pre-function": { "phase": "rewrite", "functions" : ["return function() ngx.log(ngx.ERR, \"serverless pre function\"); end"] } }, "upstream": { "type": "roundrobin", "nodes": { "39.97.63.215:80": 1 } } }' ``` ## Test Plugin Use curl to access: ```shell curl -i http://127.0.0.1:9080/index.html ``` Then you will find the message 'serverless pre-function' in the error.log, which indicates that the specified function is in effect. ## Disable Plugin When you want to disable the serverless plugin, it is very simple, you can delete the corresponding json configuration in the plugin configuration, no need to restart the service, it will take effect immediately: ```shell curl http://127.0.0.1:9080/apisix/admin/routes/1 -H 'X-API-KEY: edd1c9f034335f136f87ad84b625c8f1' -X PUT -d ' { "methods": ["GET"], "uri": "/index.html", "upstream": { "type": "roundrobin", "nodes": { "39.97.63.215:80": 1 } } }' ``` The serverless plugin has been disabled now. It works for other plugins.