|
| 1 | +# Copyright (c) Microsoft Corporation. |
| 2 | +# Licensed under the MIT License. |
| 3 | +[CmdletBinding()] |
| 4 | +param( |
| 5 | + [Parameter(Mandatory=$true,Position=0)] |
| 6 | + [ValidateSet('Get','Set','Test')] |
| 7 | + [string]$Operation, |
| 8 | + [Parameter(Mandatory=$true,Position=1,ValueFromPipeline=$true)] |
| 9 | + [string]$jsonInput |
| 10 | +) |
| 11 | + |
| 12 | +functionWrite-DscTrace { |
| 13 | +param( |
| 14 | + [Parameter(Mandatory=$true)] |
| 15 | + [ValidateSet('Error','Warn','Info','Debug','Trace')] |
| 16 | + [string]$Level, |
| 17 | + [Parameter(Mandatory=$true,ValueFromPipeline=$true)] |
| 18 | + [string]$Message, |
| 19 | + [switch]$Now |
| 20 | + ) |
| 21 | + |
| 22 | +$trace=@{$Level.ToLower()=$Message }|ConvertTo-Json-Compress |
| 23 | + |
| 24 | +if ($Now) { |
| 25 | +$host.ui.WriteErrorLine($trace) |
| 26 | + }else { |
| 27 | +$traceQueue.Enqueue($trace) |
| 28 | + } |
| 29 | +} |
| 30 | + |
| 31 | +$scriptObject=$jsonInput|ConvertFrom-Json |
| 32 | + |
| 33 | +$script=switch ($Operation) { |
| 34 | +'Get' { |
| 35 | +$scriptObject.GetScript |
| 36 | + } |
| 37 | +'Set' { |
| 38 | +$scriptObject.SetScript |
| 39 | + } |
| 40 | +'Test' { |
| 41 | +$scriptObject.TestScript |
| 42 | + } |
| 43 | +} |
| 44 | + |
| 45 | +if ($null-eq$script) { |
| 46 | +Write-DscTrace-Now-Level Info-Message"No script found for operation '$Operation'." |
| 47 | +if ($Operation-eq'Test') { |
| 48 | +# if not implemented, we return it's in desired state |
| 49 | +@{_inDesiredState=$true }|ConvertTo-Json-Compress |
| 50 | +exit0 |
| 51 | + } |
| 52 | + |
| 53 | +# write an empty json object to stdout |
| 54 | +'{}' |
| 55 | +exit0 |
| 56 | +} |
| 57 | + |
| 58 | +# use AST to see if script has param block, if any errors exit with error message |
| 59 | +$errors=$null |
| 60 | +$tokens=$null |
| 61 | +$ast= [System.Management.Automation.Language.Parser]::ParseInput($script, [ref]$tokens, [ref]$errors) |
| 62 | +if ($errors.Count-gt0) { |
| 63 | +$errorMessage=$errors|ForEach-Object {$_.ToString() } |
| 64 | +Write-DscTrace-Now-Level Error-Message"Script has syntax errors:$errorMessage" |
| 65 | +exit3 |
| 66 | +} |
| 67 | + |
| 68 | +$paramName=if ($null-ne$ast.ParamBlock) { |
| 69 | +# make sure it only specifies one parameter and get the name of that parameter |
| 70 | +if ($ast.ParamBlock.Parameters.Count-ne1) { |
| 71 | +Write-DscTrace-Now-Level Error-Message'Script must have exactly one parameter.' |
| 72 | +exit3 |
| 73 | + } |
| 74 | +$ast.ParamBlock.Parameters[0].Name.VariablePath.UserPath |
| 75 | +}else { |
| 76 | +$null |
| 77 | +} |
| 78 | + |
| 79 | +$ps= [PowerShell]::Create().AddScript({ |
| 80 | +$DebugPreference='Continue' |
| 81 | +$VerbosePreference='Continue' |
| 82 | +$ErrorActionPreference='Stop' |
| 83 | +}).AddStatement().AddScript($script) |
| 84 | + |
| 85 | +if ($null-ne$scriptObject.input) { |
| 86 | +if ($null-eq$paramName) { |
| 87 | +Write-DscTrace-Now-Level Error-Message'Input was provided but script does not have a parameter to accept input.' |
| 88 | +exit3 |
| 89 | + } |
| 90 | +$null=$ps.AddParameter($paramName,$scriptObject.input) |
| 91 | +}elseif ($null-ne$paramName) { |
| 92 | +Write-DscTrace-Now-Level Error-Message"Script has a parameter '$paramName' but no input was provided." |
| 93 | +exit3 |
| 94 | +} |
| 95 | + |
| 96 | +$traceQueue= [System.Collections.Concurrent.ConcurrentQueue[object]]::new() |
| 97 | + |
| 98 | +$null=Register-ObjectEvent-InputObject$ps.Streams.Error-EventName DataAdding-MessageData$traceQueue-Action { |
| 99 | +$traceQueue=$Event.MessageData |
| 100 | +# convert error to string since it's an ErrorRecord |
| 101 | +$traceQueue.Enqueue((@{error= [string]$EventArgs.ItemAdded }|ConvertTo-Json-Compress)) |
| 102 | +} |
| 103 | +$null=Register-ObjectEvent-InputObject$ps.Streams.Warning-EventName DataAdding-MessageData$traceQueue-Action { |
| 104 | +$traceQueue=$Event.MessageData |
| 105 | +$traceQueue.Enqueue((@{warn=$EventArgs.ItemAdded.Message }|ConvertTo-Json-Compress)) |
| 106 | +} |
| 107 | +$null=Register-ObjectEvent-InputObject$ps.Streams.Information-EventName DataAdding-MessageData$traceQueue-Action { |
| 108 | +$traceQueue=$Event.MessageData |
| 109 | +if ($null-ne$EventArgs.ItemAdded.MessageData) { |
| 110 | +if ($EventArgs.ItemAdded.Tags-contains'PSHOST') { |
| 111 | +$traceQueue.Enqueue((@{info=$EventArgs.ItemAdded.MessageData.ToString() }|ConvertTo-Json-Compress)) |
| 112 | + }else { |
| 113 | +$traceQueue.Enqueue((@{trace=$EventArgs.ItemAdded.MessageData.ToString() }|ConvertTo-Json-Compress)) |
| 114 | + } |
| 115 | +return |
| 116 | + } |
| 117 | +} |
| 118 | +$null=Register-ObjectEvent-InputObject$ps.Streams.Verbose-EventName DataAdding-MessageData$traceQueue-Action { |
| 119 | +$traceQueue=$Event.MessageData |
| 120 | +$traceQueue.Enqueue((@{info=$EventArgs.ItemAdded.Message }|ConvertTo-Json-Compress)) |
| 121 | +} |
| 122 | +$null=Register-ObjectEvent-InputObject$ps.Streams.Debug-EventName DataAdding-MessageData$traceQueue-Action { |
| 123 | +$traceQueue=$Event.MessageData |
| 124 | +$traceQueue.Enqueue((@{debug=$EventArgs.ItemAdded.Message }|ConvertTo-Json-Compress)) |
| 125 | +} |
| 126 | +$outputObjects= [System.Collections.Generic.List[Object]]::new() |
| 127 | + |
| 128 | +functionWrite-TraceQueue() { |
| 129 | +$trace=$null |
| 130 | +while (!$traceQueue.IsEmpty) { |
| 131 | +if ($traceQueue.TryDequeue([ref]$trace)) { |
| 132 | +$host.ui.WriteErrorLine($trace) |
| 133 | + } |
| 134 | + } |
| 135 | +} |
| 136 | + |
| 137 | +try { |
| 138 | +$asyncResult=$ps.BeginInvoke() |
| 139 | +while (-not$asyncResult.IsCompleted) { |
| 140 | +Write-TraceQueue |
| 141 | + |
| 142 | +Start-Sleep-Milliseconds100 |
| 143 | + } |
| 144 | +$outputCollection=$ps.EndInvoke($asyncResult) |
| 145 | +Write-TraceQueue |
| 146 | + |
| 147 | + |
| 148 | +if ($ps.HadErrors) { |
| 149 | +# If there are any errors, we will exit with an error code |
| 150 | +Write-DscTrace-Now-Level Error-Message'Errors occurred during script execution.' |
| 151 | +exit1 |
| 152 | + } |
| 153 | + |
| 154 | +foreach ($outputin$outputCollection) { |
| 155 | +$outputObjects.Add($output) |
| 156 | + } |
| 157 | +} |
| 158 | +catch { |
| 159 | +Write-DscTrace-Now-Level Error-Message$_ |
| 160 | +exit1 |
| 161 | +} |
| 162 | +finally { |
| 163 | +$ps.Dispose() |
| 164 | +Get-EventSubscriber|Unregister-Event |
| 165 | +} |
| 166 | + |
| 167 | +# Test should return a single boolean value indicating if in the desired state |
| 168 | +if ($Operation-eq'Test') { |
| 169 | +if ($outputObjects.Count-eq1-and$outputObjects[0]-is [bool]) { |
| 170 | +@{_inDesiredState=$outputObjects[0] }|ConvertTo-Json-Compress |
| 171 | + }else { |
| 172 | +Write-DscTrace-Now-Level Error-Message'Test operation did not return a single boolean value.' |
| 173 | +exit1 |
| 174 | + } |
| 175 | +}else { |
| 176 | +@{output=$outputObjects }|ConvertTo-Json-Compress-Depth10 |
| 177 | +} |