PowerShell - 函数计算

通过函数计算的Custom Runtime，您可以在函数计算平台使用PowerShell来编写函数。本文介绍快速部署和调用PowerShell函数的详细步骤。

前提条件

您已安装8.6.0及以上版本的Node.js。详情请参见官方下载地址。

说明如果您已安装Funcraft可直接跳转至步骤二：部署并调用函数。

步骤一：准备环境

安装Funcraft，最简单的方式就是直接下载可执行的二进制文件。

安装Funcraft到本机。详情请参见安装Funcraft。
执行fun --version检查安装是否成功。

执行fun config配置Funcraft。然后按照提示依次配置Account ID、Access Key ID、Access Key Secret、Default region name。

fun config
Aliyun Account ID 1234xxx
Aliyun Access Key ID xxxx
Aliyun Access Key Secret xxxx
Default region name cn-xxxx
The timeout in seconds for each SDK client invoking 300
The maximum number of retries for each SDK client 5
Allow to anonynously report usage statistics to improve the tool over time? (Y/n)

步骤二：部署并调用函数

执行以下命令克隆示例工程到本地。
```
git clone https://github.com/awesome-fc/fc-custom-demo          
```
说明如果您没有安装Git，可以直接在浏览器地址栏输入https://github.com/awesome-fc/fc-custom-demo，然后单击下载按钮直接下载。
执行以下命令进入克隆的示例项目中。
```
cd fc-custom-demo
cd powershell-demo       
```

执行以下命令安装依赖。

fun install -v

返回结果如下。

start installing function dependencies without docker

building powershell-demo/fc-powershell
Funfile exist, Fun will use container to build forcely
Step 1/7 : FROM registry.cn-beijing.aliyuncs.com/aliyunfc/runtime-custom:build-1.9.4
...
Step 7/7 : RUN fun-install apt-get install powershell
...
sha256:7c6476a3a4496bbf3da83bfb8966acc90fa94f4f8baccd248cd79c18c4fae409
Successfully built 7c6476a3a449
Successfully tagged fun-cache-965bbabb-ab6f-44e7-9910-7dd1df1d3c3e:latest
copying function artifact to /Users/songluo/gitpro/fc-custom-demo/powershell-demo
copy from container /mnt/auto/. to localNasDir

Install Success

执行以下命令将项目部署至函数计算。

fun deploy -y

返回结果如下。

....
? Do you want to let fun to help you automate the configuration? Yes
? You have already configured 'NasConfig: Auto’. We want to use this configuration to store your function dependencies. Yes

Fun automatically backups the original template.yml file to /Users/txd123/Desktop/jack/fc-custom-demo/powershell-demo/.template.yml.backup
Fun add .fun/root to /Users/txd123/Desktop/jack/fc-custom-demo/powershell-demo/.nas.yml
Fun add environment variables to 'powershellDemo/fc-powershell' in /Users/txd123/Desktop/jack/fc-custom-demo/powershell-demo/template.yml

starting upload /Users/txd123/Desktop/jack/fc-custom-demo/powershell-demo/.fun/root to nas://powershellDemo/mnt/auto/root/

start fun nas init...
....
fun nas init Success

zipping /Users/txd123/Desktop/jack/fc-custom-demo/powershell-demo/.fun/root
✔ upload done
unzipping file
✔ unzip done
✔ upload completed!

....
? Region cn-qingdao only supports capacity NAS. Do you want to create it automatically? Yes
        ....
    Waiting for function fc-powershell to be deployed...
        Waiting for packaging function fc-powershell code...
        The function fc-powershell has been packaged. A total of 3 files were compressed and the final size was 1.31 KB
    function fc-powershell deploy success
    function fc-powershell deploy success
service powershellDemo deploy success

执行以下命令调用部署的函数。

fun invoke -e "Hello World"

返回结果如下。

...
========= FC invoke Logs begin =========
FC Invoke Start RequestId: cd30369e-7dfa-439c-a68d-7fe16d5a7e05
Hello World
FC Invoke End RequestId: cd30369e-7dfa-439c-a68d-7fe16d5a7e05

Duration: 54.13 ms, Billed Duration: 100 ms, Memory Size: 512 MB, Max Memory Used: 133.70 MB
========= FC invoke Logs end =========

FC Invoke Result:
Hello World