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  1. Create a language type called ps workflow
    1. Set the file extension to ps1
    2. Set the command to PowerShell -ExecutionPolicy Bypass -File "$SCRIPT_NAME$"
    3. Set the category field to Workflow.
    4. Click OK.

  2. Add a new Metadata Object Type.
    1. To add a new object, right click on the Host Script node.
    2. Select New Object.
    3. For this example, enter Print Context as a name.
    4. Click OK.

  3. In the configuration window, set the type to ps workflow script, set the appropriate Owner and Connection Name for your data.

  4. The new script should appear on the Host Script node.
  5. Right click on Print Context and select Edit the Script. This will open the script on a new tab.
  6. On the edit script tab enter the following code:
Code Block
languagepowershell
titlePrint Context
collapsetrue
write-output 1
write-output 'Printing context'

# print the expected context file
write-output "---- Parsing context file: `n$PSScriptRoot\wsla${ENV:WSL_SEQUENCE}.objects"
if (Test-Path -path "$PSScriptRoot\wsla${ENV:WSL_SEQUENCE}.objects") { 
  # Parse json .objects file
  $json = Get-Content "$PSScriptRoot\wsla${ENV:WSL_SEQUENCE}.objects" | Out-String | ConvertFrom-Json

  # Context
  write-output "`n---- Context: $($json.context)"

  # Group
  if ($json.group -ne $null) {
    write-output "---- Group: $($json.group)"
  }

  # Projects
  if ($json.project -ne $null) {
    write-output "---- Project(s):"
    $json.project
  }

  # Objects
  if ($json.objectsByName -ne $null) {
    # print objects
    $htRedObjects = [ordered]@{}
    # Populates a hastable with obj-name as Key and obj-type as Value from RED formatted json 
    $json.objectsByName | get-member -type properties | %{ $htRedObjects[$_.name] = $json.objectsByName."$($_.name)".objectType.name }
    $htRedObjects.Keys | select @{label='Object Name';expression={$_}}, @{label='Object Type';expression={$htRedObjects.$_}}
  }

  # Jobs
  if ($json.jobsByName -ne $null) {
    # print jobs
    write-output "`n---- Jobs:"
    $redJobs=@()
    $redJobs = $json.jobsByName
    $redJobs
  }

  # Parameters
  if ($json.parametersByName -ne $null) {
    # print parameters
    write-output "`n---- Parameters:"
    $redParams=@()
    $redParams = $json.parametersByName
    $redParams
  }

}
else {
  write-output "*** Error: Objects file doesn't exist as there were no objects in the current context. ***"
}


Running the Script

To run the script, right click on an object, go to Workflows, and select Print Context.

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