函数返回json,而不是仅返回值

我有带有标签RDP、Test等的ec2实例。

我创建了一个函数,用于根据标记建立WinRM连接:

function PSconnector($IP){
# code to get instance tag
#....

if ($instance_tag -match 'RDP') {
   $user = "foo"
   $pass = "bar"
}
else{
  # donwload config
  #....

  $config = Get-Content .\$config_name| Out-String | ConvertFrom-Json
  $user = $config.Server.ServerUser
  $pass = $config.Server.ServerPassword
}
# running echo to check only
echo $user
echo $pass
#
return ($user, $pass)
}

$creds =  PSconnector($ip)
$creds

对于RDP,这是可以的。但另一方面:

{
    "AcceptRanges": "bytes",
    "LastModified": "Fri, 11 Jan 2019 09:56:53 GMT",
    "ContentLength": 2919,
    "ETag": "\"1f5ace2cfc81ba53ffde4b0e66cb65da\"",
    "ContentType": "application/json",
    "Metadata": {}
}
foobar
barfoo

同时,echo In函数仅显示正确的varaibales,不带json:

foobar
barfoo

编辑1

 aws s3api get-object --bucket $bucket --key $key/$config_name $config_name 

编辑2 如果我使用 Get-S3Object 而是 aws cli 结果相似:

ETag         : "1f5ace2cfc81ba53ffde4b0e66cb65da"
BucketName   : jenkins-configuration-files
Key          : __json.config___
LastModified : 1/11/2019 11:56:53 AM
Owner        : Amazon.S3.Model.Owner
Size         : 2919
StorageClass : STANDARD

foobar
barfoo