Create the "skeleton" of a custom PSObject from scratch-CodePudding

I'm trying to create a PSCustomObject that will later on be converted to JSON as the body of an API request.

This body basically has a structure to add / remove different information to a security management tool policy (filehash / filenames / certificates / IPs / file extensions / folders exceptions, on which technology etc.)

Here is an example of a final JSON with all the possibilities. As a proof of concept, I'm focusing on the following part which is adding a filename & a filehash to the exception policy

{
"add": {
    "applications": [
        {
            "processfile": {
                "sha2": "6ddc5c11925ab348eb0d390ec5179c1d655eb4bf70779f7a4e28b7db485d20ea",
                "name": "myfilename"
            }
        }
    ]
...

My goal is not to import this specific JSON as a custom Object, (I know this can be done through convertfrom-Json). It's to create some empty object, but with the correct structure matching the JSON format. This way, I would just have to populate and access information in my object like this :

PS C:\PSSymantecCloud> $obj.add.applications

processfile
-----------
@{sha2=6ddc5c11925ab348eb0d390ec5179c1d655eb4bf70779f7a4e28b7db485d20ea; name=myfilename}

PS C:\PSSymantecCloud> $obj.add.applications.processfile

sha2                                                             name
----                                                             ----
6ddc5c11925ab348eb0d390ec5179c1d655eb4bf70779f7a4e28b7db485d20ea myfilename

I've been trying to play around with Format-Custom CmdLet but without success. Any suggestions on how to create such a custom PSObject ?

CodePudding user response：

I'm fond of PowerShell classes so here is one way to do it with them. You can add new processfile with the AddProcessFile method that takes 2 arguments as in your Json:

class addjson {
    [object] $add

    addjson() {
        $this.add = [pscustomobject]@{
            applications = [System.Collections.Generic.List[object]]::new()
        }
    }

    [void] AddProcessFile([string] $sha2, [string] $name) {
        $this.add.applications.Add([pscustomobject]@{
            processfile = [pscustomobject]@{
                sha2 = $sha2
                name = $name
            }
        })
    }
}

$add = [addjson]::new()
$add.AddProcessFile('6ddc5c11925ab348eb0d390ec5179c1d655eb4bf70779f7a4e28b7db485d20ea', 'myFile')
$add.AddProcessFile('6ddc5c11925ab348eb0d390ec5179c1d655eb4bf70779f7a4e28b7db485d20ea', 'myFile2')
$add | ConvertTo-Json -Depth 4

Resulting Json would be:

{
  "add": {
    "applications": [
      {
        "processfile": {
          "sha2": "6ddc5c11925ab348eb0d390ec5179c1d655eb4bf70779f7a4e28b7db485d20ea",
          "name": "myFile"
        }
      },
      {
        "processfile": {
          "sha2": "6ddc5c11925ab348eb0d390ec5179c1d655eb4bf70779f7a4e28b7db485d20ea",
          "name": "myFile2"
        }
      }
    ]
  }
}

CodePudding user response：

Create an psObject shell, assign empty strings ““, or $false to the properties

$Object = New-Object PSObject -Property @{
      Name = ““  
      SecondProperty= ““
      yetAnotherProoerty= ““

  }

Later u can assign your results like this:

$Object.name= $myResult

Or even add new member aka properties to the object like this:

Object | Add-Member -NotePropertyName Status -NotePropertyValue Done