将环境变量转换为json文件 [英] Convert environment variables into a json file

问题描述

我试图找到一种方法来将配置设置输入到我的在容器中运行的SPA应用程序中.

I am trying to find a way to feed configuration settings into my SPA application that is running in a container.

我当前的计划是将配置作为环境变量传递.然后在容器启动时，根据这些环境变量生成一个json文件，并将其传递给浏览器(以及SPA应用程序).

My current plan is to pass in the configuration as environment variables. Then on container startup, generate a json file from those environment variables to pass to the browser (along with the SPA app).

我打算这样格式化我的环境变量:

I am planning to format my environment variables like this:

Env Variable Name:  Security:ClientId 
Env Variable Value: 123456

Env Variable Name:  Security:clientSecret
Env Variable Value: abcdefg

Env Variable Name:  AppSettings:Environment
Env Variable Value: Dev

它将转换为:

{
  "AppSettings": {
    "Environment": "Dev",
  },
  "Security": {
    "ClientId": "123456",
    "ClientSecret": "abcdefg"
  }
}

我对shell脚本没有足够的经验，但是必须在shell脚本中完成，这样它才能在Linux容器中运行.

I am fairly inexperienced at shell scripting, but this has to be done in a shell script so it can run in a Linux container.

我已经阅读了 jq ，这似乎是在Shell脚本中与Json文件进行交互的方式.但是他们似乎都希望您从一个现有的json文件开始，然后将其转换为另一个json文件.

I have read of jq, and it seems to be the way to interact with Json files in a shell script. But they all seem to want you to start with an existing json file that you will be transforming to a different json file.

如何通过键值对列表，子节并使用 jq (或Shell脚本中的其他内容)创建新的json文件?

How do I create a new json file from a list of key value pairs, with sub sections and using jq (or something else in a shell script)?

推荐答案

以下假设环境变量"名称和值可以作为变量=值字符串使用:

The following assumes the "environment variable" names and values could be made available as variable=value strings:

function data {
cat <<EOF
Security:ClientId=123456
Security:clientSecret=abcdefg
AppSettings:Environment=Dev
EOF
}

data | jq -nR '

def parse: capture("(?<x>[^:]*):(?<y>[^=]*)=(?<value>.*)");

reduce inputs as $line ({};
   ($line | parse) as $p
   | .[$p.x][$p.y] = ($p.value) )
'

输出

如问号所示.

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