mirror of
https://gitee.com/iresty/apisix.git
synced 2024-12-16 01:41:17 +08:00
105 lines
3.1 KiB
Markdown
105 lines
3.1 KiB
Markdown
<!--
|
||
#
|
||
# Licensed to the Apache Software Foundation (ASF) under one or more
|
||
# contributor license agreements. See the NOTICE file distributed with
|
||
# this work for additional information regarding copyright ownership.
|
||
# The ASF licenses this file to You under the Apache License, Version 2.0
|
||
# (the "License"); you may not use this file except in compliance with
|
||
# the License. You may obtain a copy of the License at
|
||
#
|
||
# http://www.apache.org/licenses/LICENSE-2.0
|
||
#
|
||
# Unless required by applicable law or agreed to in writing, software
|
||
# distributed under the License is distributed on an "AS IS" BASIS,
|
||
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
# See the License for the specific language governing permissions and
|
||
# limitations under the License.
|
||
#
|
||
-->
|
||
|
||
[English](serverless.md)
|
||
|
||
# serverless
|
||
serverless 的插件有两个,分别是 `serverless-pre-function` 和 `serverless-post-function`,
|
||
前者会在指定阶段的最开始运行,后者是在指定阶段的最后运行。
|
||
|
||
这两个插件接收的参数都是一样的。
|
||
|
||
### Parameters
|
||
* `phase`: 指定的运行阶段,没有指定的话默认是 `access`。允许的阶段有:`rewrite`、`access`
|
||
`header_filer`、`body_filter`、`log` 和 `balancer` 阶段。
|
||
* `functions`: 指定运行的函数列表,是数组类型,里面可以包含一个函数,也可以是多个函数,按照先后顺序执行。
|
||
需要注意的是,这里只接受函数,而不接受其他类型的 Lua 代码。比如匿名函数是合法的:
|
||
```
|
||
return function()
|
||
ngx.log(ngx.ERR, 'one')
|
||
end
|
||
```
|
||
|
||
闭包也是合法的:
|
||
```
|
||
local count = 1
|
||
return function()
|
||
count = count + 1
|
||
ngx.say(count)
|
||
end
|
||
```
|
||
|
||
但不是函数类型的代码就是非法的:
|
||
```
|
||
local count = 1
|
||
ngx.say(count)
|
||
```
|
||
|
||
### 示例
|
||
|
||
#### 启动插件
|
||
下面是一个示例,在指定的 route 上开启了 serverless 插件:
|
||
|
||
```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
|
||
}
|
||
}
|
||
}'
|
||
```
|
||
|
||
#### 测试插件
|
||
使用 curl 访问:
|
||
```shell
|
||
curl -i http://127.0.0.1:9080/index.html
|
||
```
|
||
|
||
然后你在 error.log 日志中就会发现 `serverless pre function` 这个 error 级别的日志,
|
||
表示指定的函数已经生效。
|
||
|
||
#### 移除插件
|
||
当你想去掉插件的时候,很简单,在插件的配置中把对应的 json 配置删除即可,无须重启服务,即刻生效:
|
||
|
||
```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
|
||
}
|
||
}
|
||
}'
|
||
```
|
||
|
||
现在就已经移除了 serverless 插件了。其他插件的开启和移除也是同样的方法。
|