This crate provides a method to construct serde_json::Value from environment variables.
Examples:
Given environemnt variables, with prefix PREFIX and separator __:
bash
export PREFIX__INT_LIST__0=1
export PREFIX__INT_LIST__1=2
export PREFIX__STRUCT__INT=1
export PREFIX__STRUCT__STRING=string
export PREFIX__STRUCT__BOOL_LIST__0=true
export PREFIX__STRUCT__BOOL_LIST__1=false
export PREFIX__STRUCT__STRUCT__INT=1
export PREFIX__STRUCT__STRUCT__STRING=string
export PREFIX__STRUCT__STRUCT__BOOL_LIST__0=true
export PREFIX__STRUCT__STRUCT__BOOL_LIST__1=false
export PREFIX__BOOL_LIST__3=true
export PREFIX__STRUCT__FLOAT=1.1
export PREFIX__BOOL_LIST__0=false
export PREFIX__STRING_LIST__0=string0
Without default json: ```rust use envvarsto_json::EnvVarsToJson;
let json = EnvVarsToJson::builder() .prefix("PREFIX") .separator("_") .build() .expect("Failed to build EnvVarsToJson") .parsefrom_env() .expect("Failed to parse environment variables");
println!("{}", serdejson::tostring_pretty(&json).unwrap()); ```
Ouptut json:
json
{
"int_list": [1, 2],
"struct": {
"int": 1,
"float": 1.1,
"string": "string",
"bool_list": [true, false],
"struct": {
"int": 1,
"string": "string",
"bool_list": [true, false]
}
},
"bool_list": [false, null, null, true],
"string_list": ["string0"]
}
With default json: ```rust use serdejson::json; use envvarstojson::EnvVarsToJson;
let json = EnvVarsToJson::builder() .prefix("PREFIX") .separator("_") .json(json!( { "floatlist": [1.1], "stringlist": ["a", "b"], "boollist": [true, false] } )) .build() .expect("Failed to build EnvVarsToJson") .parsefromenv() .expect("Failed to parse environment variables");
println!("{}", serdejson::tostring_pretty(&json).unwrap()); ```
Output:
json
{
"int_list": [1, 2],
"float_list": [1.1],
"struct": {
"int": 1,
"float": 1.1,
"string": "string",
"bool_list": [true, false],
"struct": {
"int": 1,
"string": "string",
"bool_list": [true, false]
}
},
"bool_list": [false, false, null, true],
"string_list": ["string0", "b"]
}
Licensed under either of * Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0) * MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)