如何在Powershell運行空間線程中一起返回多個返回值？

Question

我怎樣才能將第二個$scriptBlock作爲第一個$scriptBlock工作？ 2的區別在於第一個從命令返回單個對象，第二個應該從多個命令返回一個對象數組？

要測試這個代碼，你只需要填入服務器名稱爲$servers和$connectionUri的Exchange PowerShell的超級鏈接和備用註釋掉第一$scriptBlock（工作）和第二$scriptBlock（沒有工作）之間。

感謝

cls 

Write-Host "Aynchronous"; 

# Create session state 
$stopWatch = [System.Diagnostics.Stopwatch]::StartNew(); 

$myString = "this is session state!"; 
$sessionState = [System.Management.Automation.Runspaces.InitialSessionState]::CreateDefault(); 
$sessionstate.Variables.Add((New-Object -TypeName System.Management.Automation.Runspaces.SessionStateVariableEntry -ArgumentList "myString" ,$myString, "example string")); 

# Create runspace pool consisting of $numThreads runspaces 
$minimumAmountOfThreads = 1; 
$maximumAmountOfThreads= 15; 
$RunspacePool = [RunspaceFactory]::CreateRunspacePool(1, 15, $sessionState, $Host); 
$RunspacePool.Open(); 

$servers = @("server1","server2","server3"); 
$connectionUri = "http://[something]/powershell"; 

$threads = @(); 
$Jobs = @(); 
$asynchronousThreadCount = 0; 
foreach ($server in $servers) 
{ 
    $scriptBlock = "import-pssession (new-pssession -ConfigurationName Microsoft.Exchange -ConnectionUri $connectionUri) -AllowClobber; get-exchangeserver $server;"; # working 
    #$scriptBlock = "import-pssession (new-pssession -ConfigurationName Microsoft.Exchange -ConnectionUri $connectionUri) -AllowClobber; $returnValue = @(); $returnValue += Get-MailboxDatabase -Server $server; return $returnValue;"; # NOT working 
     #$scriptBlock = "import-module 'activedirectory'; Get-ADDomain"; # working 
    #$scriptBlock = "import-module 'activedirectory'; $returnValue = @(); $returnValue += Get-ADDomain; return $returnValue;" # NOT working 

    $asynchronousThreadCount ++; 
    $runspaceObject = [PSCustomObject] @{ 
     Runspace = [PowerShell]::Create() 
     Invoker = $null 
    } 
    $runspaceObject.Runspace.RunSpacePool = $runspacePool; 
    $runspaceObject.Runspace.AddScript($scriptBlock) | Out-Null; 
    $runspaceObject.Runspace.AddArgument($c) | Out-Null; 
    $runspaceObject.Invoker = $runspaceObject.Runspace.BeginInvoke(); 
    $threads += $runspaceObject; 
    $elapsed = $StopWatch.Elapsed; 

    Write-Host "A synchronous created thread $asynchronousThreadCount " $elapsed; 
} 

Write-Host $threads.Count; 
Write-Host ""; 
Write-Host "Waiting.." -NoNewline; 
Do { 
    Write-Host "." -NoNewline; 
    Start-Sleep -Seconds 1; 
} While ($runspaceObject.Invoker.IsCompleted -contains $false); 

$resultsAsynchronous = @(); 

foreach ($tr in $threads) 
{ 
    $resultsAsynchronous += $tr.Runspace.EndInvoke($tr.Invoker); 
    $tr.Runspace.Dispose(); 
} 
$procCountMultiThread = $resultsAsynchronous.Count; 

$runspacePool.Close(); 
$runspacePool.Dispose(); 

$elapsed = $StopWatch.Elapsed; 
Write-Host "Multithread elapsed time: $elapsed"; 
Write-Host "Asynchronous return value count " $resultsAsynchronous.Count; 
$resultsAsynchronous #| fl fqdn, AdminDisplayVersion; 

Answer 1

你需要用雙引號定義你的scriptblocks時逃脫$：

$scriptBlock = "import-pssession (new-pssession -ConfigurationName Microsoft.Exchange -ConnectionUri $connectionUri) -AllowClobber; $returnValue = @(); $returnValue += Get-MailboxDatabase -Server $server; return $returnValue;"; # NOT working 

結束的字符串

import-pssession (new-pssession -ConfigurationName Microsoft.Exchange -ConnectionUri) -AllowClobber; = @(); += Get-MailboxDatabase -Server ; return ; 

逃生的相關變量印記與`：

$scriptBlock = "import-pssession (new-pssession -ConfigurationName Microsoft.Exchange -ConnectionUri $connectionUri) -AllowClobber; `$returnValue = @(); `$returnValue += Get-MailboxDatabase -Server $server; return `$returnValue;";